text:
UTPA STEM/CBI Courses/Introduction to STEM/Cold and Hot Packs

Course Title: Introduction to STEM

Lecture Topic: Cold and Hot Packs

Instructor: Javier Macossay

Institution: University of Texas - Pan American

Backwards Design
Course Objectives

 * Primary Objectives- By the next class period students will be able to:
 * Understand enthalpy and its application in medicine.

 * Sub Objectives- The objectives will require that students be able to:
 * Learn basic concepts, such as enthalpy, entropy and free energy.
 * Understand how these concepts can be used to design cold and hot packs.
 * Understand how the cold and hot packs designed can be used in medicine.
 * Determine the best chemicals to formulate a cold and a hot pack.

 * Difficulties- Students may have difficulty:
 * Students will encounter problems understanding enthalpy, entropy and free energy.

 * Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
 * Cold and hot packs are used in sports medicine to treat injuries. Cold packs prevent inflammation, if applied immediately, in athletes suffering from a twisted ankle or shoulder. However, hot packs are used afterwards to treat swollen injured limbs. Knowledge of Chemistry is needed to understand how to design an effective cold and hot pack.

Model of Knowledge

 * Concept Map
 * Understanding enthalpy, entropy and free energy.
 * Understanding how these concepts can be used to treat injuries.
 * Learning the basics of how our body responds to sprains.
 * Determination of the enthalpy of several compounds.
 * Evaluation and determination of the best compounds to prepare cold and hot packs.

 * Content Priorities
 * Enduring Understanding
 * Understand the mechanism of action of cold and hot packs.
 * Important to Do and Know
 * Learn how to apply concepts such as enthalpy in real life.
 * Worth Being Familiar with
 * Identification of the chemicals used in cold and hot packs.

Assessment of Learning

 * Formative Assessment
 * In Class (groups)
 * Discussion of basic concepts, such as enthalpy, entropy and free energy.
 * Discussion of how cold and hot packs work.
 * Discussion of our bodies’ response to injuries.
 * Discussion of results and conclusions.

 * Homework (individual)
 * Internet based search of cold and hot packs.
 * Internet based search of enthalpy, entropy and free energy.
 * Development of a laboratory procedure to determine the enthalpy of several chemicals.
 * Analysis of data and interpretation.

 * Summative Assessment
 * Discussion in front of the group of the conclusions.

Legacy Cycle
LOOK AHEAD AND REFLECT BACK

 * Goals
 * Students should be able to understand the interaction between science and technology and real world applications and impact.
 * Objectives
 * Students should understand and correlate the concepts learned in a classroom to applications in medicine.
 * Students will learn how to determine the enthalpy of a compound.

THE CHALLENGE

You live in the Dallas metropolitan area and the Dallas Cowboys have contacted you as they need your assistance. Jerry Jones wants you to develop cold and hot packs for his team, which uses them extensively after each game and training session. Furthermore, the Cowboys want to add their seal to your product and market your cold and hot packs nationwide. In order to prepare these cold and hot packs, you have to refer back to the basic Physical Chemistry learned while attending UTPA, how would you do it?

GENERATE IDEAS
 * Students will research independently the chemicals found in cold and hot packs.
 * Students will discuss their ideas through brain storming before performing experiments.
 * Students will investigate how to determine the enthalpy of chemicals.

MULTIPLE PERSPECTIVES

Students will discuss among the individuals in each group their ideas.

RESEARCH & REVISE

Students will learn how to interpret laboratory data and draw conclusions based on their experiments’ results.

TEST YOUR METTLE

Students will compare their results against their peers’ observations.

GO PUBLIC

Students will discuss among themselves and in front of the class their results.

Test Your Mettle Quiz
True or False (50 points)

1. Compounds absorb or release energy when dissolved in a solvent.

2. An endothermic reaction will absorb energy to proceed.

3. An exothermic reaction will absorb energy to proceed.

4. Enthalpy (or change in enthalpy) is the heat transferred in any process.

5. An increase in entropy is viewed as an increase in disorder.

6. An increase in the temperature of a body part will increase blood flow in that area.

7. A chemical commonly used to treat sports injuries on the field is ethyl chloride.

8. Thermodynamics studies the conversion of energy into work and heat.

9. If you cool down an injury (sprain) immediately after it happened, it will help the person to avoid inflammation and cause faster recovery times.

10. The chemicals used in a cold or a hot pack can be mixed a long time before its use and it will still be effective.

Multiple choice (50 points)

11. Enthalpy of dissolution is:
 * a) The transfer of heat in any chemical reaction
 * b) The transfer of heat in a dissolution process
 * c) The transfer of heat in a dissolution process using water only as the solvent
 * d) None of the above
 * e) More than one of the above

12. Enthalpy is a useful concept in preparing hot and cold packs because:
 * a) It allows you to choose the most appropriate chemical for the application desired
 * b) You can calculate the enthalpy in the system for treating sore ankles, backs, etc.
 * c) More than one of the above
 * d) None of the above

13. Ionic compounds are more effective than molecular compounds for cold and hot packs
 * a) Yes
 * b) No
 * c) It depends on the solute (ionic or molecular) – solvent pair used

14. Using rubbing alcohol with water on a person that has high fever is useful because:
 * a) The alcohol/water mixture takes heat away from the body, thus increasing the temperature
 * b) The alcohol/water mixture takes heat away from the body, thus lowering the temperature
 * c) The alcohol/water mixture gives heat to the body, thus increasing the temperature
 * d) The alcohol/water mixture gives heat to the body, thus lowering the temperature
 * e) None of the above

15. The best chemical to produce a cold pack in water should:
 * a) Dissolve quickly
 * b) Lower the temperature fast and significantly
 * c) Keep a low temperature for a prolonged time
 * d) None of the above
 * e) More than one of the above


text:
UTPA STEM/CBI Courses/Introduction to STEM/DNA Extraction

Course Title: Introduction to STEM

Lecture Topic: DNA Extraction

Instructor: Javier Macossay

Institution: University of Texas - Pan American

Backwards Design
Course Objectives

 * Primary Objectives- By the next class period students will be able to:
 * Possess a basic understanding of the DNA structure.

 * Sub Objectives- The objectives will require that students be able to:
 * Understand the presence of DNA in living organisms.
 * Learn how to isolate DNA from onions.

 * Difficulties- Students may have difficulty:
 * Students will encounter problems understanding the DNA structure.
 * Students will encounter problems performing some of the laboratory techniques.

 * Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
 * DNA is a large organic molecule that is responsible for genetic information. Furthermore, errors in the DNA structure can generate diseases (from genetic to cancer).

Model of Knowledge

 * Concept Map
 * Learn the structure of DNA.
 * Understand the importance of DNA in life and how its alterations can cause diseases.
 * Isolation of DNA from onion cells.
 * Use of laboratory techniques to grind onion cells, which will permit DNA extraction.
 * Use of laboratory techniques to isolate DNA from other organic materials present in onions and their cells.

 * Content Priorities
 * Enduring Understanding
 * Understand the importance of DNA in life.
 * Important to Do and Know
 * Learn the structure of DNA.
 * Worth Being Familiar with
 * Learn the isolation technique of DNA.

Assessment of Learning

 * Formative Assessment
 * In Class (groups)
 * Discussion of the importance of DNA in life.
 * Discussion of the DNA structure.
 * Discussion of individual laboratory procedures.
 * Discussion of results and conclusions.

 * Homework (individual)
 * Internet based search of DNA.
 * Internet based search of the DNA structure.
 * Isolation technique of DNA from different organisms.
 * Analysis of data and interpretation

 * Summative Assessment
 * Discussion of their conclusions in front of the group.

Legacy Cycle
LOOK AHEAD AND REFLECT BACK

 * Goals
 * Students should be able to understand the interaction between science and technology and real world applications and impact.
 * Objectives
 * Students should learn the structure of DNA and understand its importance in genetics and life.

THE CHALLENGE As a successful researcher, you have been asked to decode the DNA structure of onions seeded and harvested in South Texas. After you have isolated the DNA, its sequence will be decoded and compared against onions from other parts of the USA. Your studies will allow understanding and correlating the medicinal effects that onions consumed in South Texas have to prevent diseases. Therefore, your initial task in this important project will be to isolate DNA, how do you do it?

GENERATE IDEAS
 * Students will research independently the DNA structure.
 * Students will research independently the role of DNA in life.
 * Students will investigate how to isolate DNA.

MULTIPLE PERSPECTIVES students will discuss their ideas through brain storming before performing the experiment.

RESEARCH & REVISE students will learn how to interpret laboratory data and draw conclusions based on their experiments’ results.

TEST YOUR METTLE students will compare their results against their peers’ observations.

GO PUBLIC students will discuss among themselves and in front of the class their results.

LOOK AHEAD AND REFLECT BACK based on students’ conclusions and interpretations, the experiment could be expanded into using different types of vegetables. This will also allow the students to learn the similarities and differences between DNAs from different sources.

Test Your Mettle Quiz
'''True or False? (50 points)'''

1. Water is an active chemical in sunscreens

2. Hydroxyacetone is an active chemical in sunscreens

3. The mechanisms of action in sunscreens are absorption and dispersion

4. Ethyl alcohol is an active chemical in sunscreens

5. Paraben is an active chemical in sunscreens

6. Zinc oxide is an active chemical in sunscreens

7. Mineral oil is an active chemical in sunscreens

8. The acronym PF means protection factor

9. Different sunscreen formulations might contain different chemicals but work as effective as one another

10. Hydroxyquinone is an active chemical in sunscreens

Multiple choice (50 points)

11. UV sensitive beads are a good way to test sunscreen lotions because:
 * a) Beads are not useful
 * b) Beads do contain sunscreen lotion already
 * c) Beads contain UV-sensitive dyes
 * d) Beads interact with UV radiation
 * e) More than one of the above

12.- UV sensitive beads change colors at the same rate (time) under the sun and in the lab, because:
 * a) It does not matter, UV radiation will reach the beads
 * b) The statement is not true, the beads change faster under the sun
 * c) The beads will change colors regardless of where they are placed
 * d) The statement is not true, the beads change faster in the lab
 * e) None of the above

13.- Sunscreen lotions DO retard the time it takes the beads to change colors because:
 * a) No difference was observed experimentally with or without the use of sunscreen lotions
 * b) Lotions contain inactive chemicals that interact with radiation
 * c) Lotions contain active chemicals that interact with radiation
 * d) Lotions did not retard the time in any case
 * e) More than one of the above

14. Higher PF values ALWAYS results in lower UV absorption by the beads (longer times for the beads to change colors)
 * a) The statement is true
 * b) The statement is true for some PF values, but after a certain value, there is no difference
 * c) The statement is not true

15. Can the information learned in these experiments be used to understand how to prevent skin cancer?
 * a) Yes, because UV sensitive beads can be viewed as the skin
 * b) Yes, because the skin reacts with UV radiation similar to the way the beads react
 * c) No, because you cannot compare plastic beads to human skin
 * d) No, because the mechanisms of interaction between UV-beads and UV-skin are quite different
 * e) More than one of the above

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/


text:
UTPA STEM/CBI Courses/Introduction to STEM/Polymers

Course Title: Introduction to STEM

Lecture Topic: Polymers

Instructor: Javier Macossay

Institution: University of Texas - Pan American

Backwards Design
Course Objectives

 * Primary Objectives- By the next class period students will be able to:
 * Understand the concept “polymer” and their applications.

 * Sub Objectives- The objectives will require that students be able to:
 * Learn the definition of a polymer.
 * Understand some of the properties of polymers.
 * Synthesize Nylon 6,10, and slime.
 * HAVE FUN!!!!!

 * Difficulties- Students may have difficulty:
 * Students will encounter problems understanding some advanced chemistry and correlate it to the polymers’ properties.

 * Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
 * Polymers can be divided into synthetic and natural materials. These compounds are made of long chains of atoms that afford them with interesting properties. According to their physical properties, polymers can be divided into plastics, rubbers and fibers. Polymers can be found in tires, tennis shoes, rubber bands, soda bottles, computer cases and keyboards, jeans, bullet proof vests, and even in our bodies.

Model of Knowledge

 * Concept Map
 * Learning the concept Polymer.
 * Identification of polymers in real world applications.
 * Identification of polymers in human bodies.
 * Synthesis of polymers.
 * Understanding the properties of polymers.
 * PLAY WITH THE POLYMER'S SYNTHESIZED.

 * Content Priorities
 * Enduring Understanding
 * Learn the concept “polymer” and identify them in our lives.
 * Important to Do and Know
 * Understand the nature of polymers.
 * Understand the properties of polymers.
 * Worth Being Familiar with
 * Identification of some particular polymers used every day and their chemical structures.

Assessment of Learning

 * Formative Assessment
 * In Class (groups)
 * Discussion of the nature of polymers.
 * Discussion of the application of polymers.
 * Discussion of the properties of polymers.
 * Discussion of individual laboratory procedures.
 * Discussion of results and conclusions.
 * Homework (individual)
 * Internet based search of polymers and their applications.
 * Internet based search of synthesis procedures of Nylon 6,10, and slime.
 * Analysis of data and interpretation.

 * Summative Assessment
 * Discussion in front of the group of the conclusions.

Legacy Cycle
LOOK AHEAD AND REFLECT BACK

 * Goals
 * Students should learn what a polymer is and understand their impact in our lives.
 * Objectives
 * Students should identify several polymers around them and several polymers found in our bodies.

THE CHALLENGE

You are an avid sportsman who likes swimming, jogging, cycling and other sports, so you have a very good understanding of what would allow you to train better to maximize your performance. You have great ideas, among several ones, the first one is: 1) fibers that will fit your body and allow you to cool down quickly while you work out during summer; 2) rubber used in tennis shoes that will permit you to manufacture more comfortable shoes for running. However, you are not a chemist or materials scientist and have to learn some basics on how to prepare polymers. How do you prepare nylons? How do you prepare rubbers?

GENERATE IDEAS
 * Students will independently research several commercially important polymers and their uses.
 * Students will independently research several biological polymers, which are found in our bodies and their functions.
 * Students will synthesize a couple of polymers and will learn some of their properties by playing with them.

MULTIPLE PERSPECTIVES

Students will discuss their ideas among the individuals in their group.

RESEARCH & REVISE

Once data is collected, students will discuss their results and draw conclusions.

TEST YOUR METTLE

Students will compare their results against their peers’ observations.

GO PUBLIC

Students will discuss their results both among themselves and in front of the class.

LOOK AHEAD AND REFLECT BACK

Based on students’ conclusions and interpretations, the experiment could be adapted to evaluate different concentrations of the reactants and correlate them with the polymers’ properties.

Test Your Mettle Quiz
'''True or False? (50 points)'''
 * 1) Polymers are small molecules with low molecular weights.
 * 2) Polymers can be classified into biopolymers and synthetic.
 * 3) Human skin is a polymer.
 * 4) Polymers can be divided into plastics, rubbers and fibers.
 * 5) All polymers become an ecological problem after being used.
 * 6) Starch is a synthetic polymer.
 * 7) Polymers do not have to be protected from the environment in any application.
 * 8) Dyneema is a polymer used for bullet proof vests in US soldiers.
 * 9) Chitin is found in shrimps and crabs.
 * 10) Human beings are a complex mixture of polymers.

Multiple choice (50 points)

11. Nylon is used in:
 * a) Clothing
 * b) Backpacks
 * c) Ropes
 * d) None of the above
 * e) More than one of the above

12. Collagen is:
 * a) A natural polymer
 * b) It is found in the connective tissue of many living organisms
 * c) Used to produce gelatin
 * d) More than one of the above
 * e) None of the above

13. How is slime obtained?
 * a) It is a polymer dissolved in water.
 * b) It is a combination of crosslinking molecules dissolved in water.
 * c) It is a polymer which is cross linked.
 * d) It is obtained by heating a polymer and promoting crosslinking.
 * e) More than one of the above.

14. Poly-acrylic acid and derivatives are used in:
 * a) Water treatment plants
 * b) Paints
 * c) As superabsorbent polymers in diapers and feminine hygiene products
 * d) More than one of the above
 * e) None of the above

15. In the experiment performed, what is the effect that higher borax concentration has in slime?
 * a) As the concentration increases, the slime obtained becomes more cross-linked, resulting in a more rigid slime
 * b) As the concentration increases, the slime obtained becomes more cross-linked, resulting in a softer slime
 * c) As the concentration increases, the slime obtained becomes less cross-linked, resulting in a more rigid slime
 * d) As the concentration increases, the slime obtained becomes less cross-linked, resulting in a softer slime
 * e) More than one of the above


text:
UTPA STEM/CBI Courses/Introduction to STEM/Preparation of Soap

Course Title: Introduction to STEM

Lecture Topic: Preparation of Soap

Instructor: Javier Macossay

Institution: University of Texas - Pan American

Backwards Design
Course Objectives

 * Primary Objectives- By the next class period students will be able to:
 * Understand the chemical nature of soap.

 * Sub Objectives- The objectives will require that students be able to:
 * Learn the raw materials for soaps.
 * Understand how soaps are synthesized.
 * Learn that soaps possess a hydrophilic and hydrophobic region.
 * Understand the mechanism of action of soaps (how soaps assemble in micelles).

 * Difficulties- Students may have difficulty:
 * Students may encounter problems understanding the hydrophilic and hydrophobic regions found in soaps.

 * Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
 * Soaps are synthesized from natural sources (animal and/or plant fats) through basic hydrolysis. When soaps are obtained, their molecules contain groups that attract water on one side and groups that repel water on the other side, causing the soap molecules to assemble in particular shapes to “encapsulate” dirt, resulting in the cleaning power of soaps.

Model of Knowledge

 * Concept Map
 * Identification of the raw materials to obtain soaps.
 * Understanding the synthesis procedure of soaps.
 * Learning the concepts of hydrophilic and hydrophobic.
 * Understand the chemical nature of the hydrophilic and hydrophobic groups.
 * Understand the formation of micelles by soaps.
 * Understand the mechanism of action by which soaps clean.

 * Content Priorities
 * Enduring Understanding
 * Understand how soaps are synthesized and their mechanism of action.
 * Important to Do and Know
 * Understand how hydrophilic and hydrophobic groups interact with different chemicals.
 * Worth Being Familiar with
 * Become familiar with the raw materials needed to obtain soap.

Assessment of Learning

 * Formative Assessment
 * In Class (groups)
 * Discussion of the chemical nature of soap.
 * Discussion of the mechanism of action of soap.
 * Discussion of the synthesis of soap.
 * Discussion of individual laboratory procedures.
 * Discussion of results and conclusions.

 * Homework (individual)
 * Internet based search of the chemical nature of soap.
 * Internet based search of micelle formation.
 * Internet based search of the synthesis of soap.
 * Analysis of data and interpretation.

 * Summative Assessment
 * Discussion of their conclusions in front of the group.

Legacy Cycle
LOOK AHEAD AND REFLECT BACK

 * Goals
 * Students should be able to understand the interaction between science and technology and real world applications and impact.
 * Objectives
 * Students should learn how soap is synthesized and how and why it assembles in micelles.

THE CHALLENGE

You want to start your company, which will be dedicated to providing cleaning household items, such as soaps, detergents, dish washing detergents and products for cleaning ceramic floors. You have already learned that soaps and detergents can be synthesized form natural oils and fats, but have yet to explore it in the lab. How do you synthesize your company’s soap?

GENERATE IDEAS
 * Students will research independently the chemical nature of soaps.
 * Students will research independently the formation of micelles by soaps.
 * Students will investigate how to synthesize soap.

MULTIPLE PERSPECTIVES

Students will discuss among the individuals in each group their ideas.

RESEARCH & REVISE

Once data is collected, students will discuss their results and draw conclusions.

TEST YOUR METTLE

Students will compare their results against their peers’ observations. GO PUBLIC

Students will discuss their results among themselves and in front of the class.

LOOK AHEAD AND REFLECT BACK

Based on students’ conclusions and interpretations, the experiment could be expanded to synthesize detergents and compare soaps and detergents.

Test Your Mettle Quiz
'''True or False? (50 points)'''
 * 1) Soaps are the salts of carboxylic acids.
 * 2) Animal and plant fats contain triglycerides.
 * 3) The basic hydrolysis of fats can lead to soaps and detergents.
 * 4) Detergents are salts which might contain Na+ and/or K+.
 * 5) The scum you observe in your bath tub at home is the reaction between soaps and hard water.
 * 6) Sufactant is a term employed to describe surface active chemicals, such as soaps and detergents.
 * 7) Soaps are manufactured using synthetic materials.
 * 8) Detergents are manufactured using natural materials.
 * 9) Soaps and detergents present the same behavior in the presence of hard water.
 * 10) The mechanism of action for cleaning is the same for soaps and detergents.

Multiple choice (50 points)

11. Surfactants can be:
 * a) Cationic
 * b) Anionic
 * c) Neutral
 * d) None of the above
 * e) More than one of the above

12. Soaps and detergents contain:
 * a) A hydrophilic (water loving) moiety (unit)
 * b) A hydrophobic (oil loving) moiety (unit)
 * c) More than one of the above
 * d) None of the above

13. Surfactants act by encapsulating the dirt and/or oil and “removing it and washing it away” from the surface (such as clothes):
 * a) Yes
 * b) No

14. Bile acid salts are:
 * a) Found in the human body
 * b) Natural surfactants
 * c) Form micelles to encapsulate and process dietary fats
 * d) More than one of the above
 * e) None of the above

15. Commercial detergents, such as Tide contain:
 * a) Cationic detergents
 * b) Anionic detergents
 * c) Neutral detergents
 * d) Enzymes activated at certain temperatures
 * e) More than one of the above


text:
UTPA STEM/CBI Courses/Introduction to STEM/UV Sensitive Beads

Course Title: Introduction to STEM

Lecture Topic: UV Sensitive Beads

Instructor: Javier Macossay

Institution: University of Texas - Pan American

Backwards Design
Course Objectives

 * Primary Objectives- By the next class period students will be able to:
 * Understand the mechanisms of action of sunscreens.

 * Sub Objectives- The objectives will require that students be able to:
 * Identify the active ingredients in sunscreens.
 * Understand the mechanisms of action followed by the active ingredients in sunscreens.
 * Evaluate sunscreens with different protection factors (PF) and correlate this data with time of protection.
 * Understand the interaction between UV, radiation, and skin.

 * Difficulties- Students may have difficulty in the following:
 * -identifying the active ingredients in sunscreens.
 * -understanding the mechanisms of action of the active ingredients.

 * Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
 * Sunscreen lotions are used to protect us from harmful UV radiation, which can react with our skin and promote skin cancer. Using the appropriate sunscreen will limit our exposure to UV radiation and protect our health.

Model of Knowledge

 * Concept Map
 * Identification of active chemicals in sunscreens.
 * Understanding UV radiation and interaction with chemicals.
 * Mechanisms of action of the active ingredients (dispersion and absorption).
 * Evaluation of different sunscreens by application on UV-sensitive beads.
 * Correlation of time of protection with sunscreen lotions with different protection factors (PF)
 * Determination of the most appropriate sunscreen lotions.
 * Understanding the interaction between UV radiation and skin.

 * Content Priorities
 * Enduring Understanding
 * Understand how to protect us from harmful UV radiation and the effect of this in health.
 * Important to Do and Know
 * The interaction of UV radiation with skin and matter. Mechanisms of action of active ingredients in sunscreens.
 * Worth Being Familiar with
 * Identification of chemicals.

Assessment of Learning

 * Formative Assessment
 * In Class (groups)
 * Discussion of active ingredients in sunscreens.
 * Discussion of UV interaction with active ingredients.
 * Discussion of individual laboratory procedures.
 * Discussion of results and conclusions.

 * Homework (individual)
 * Internet based search of sunscreen chemicals and formulations.
 * Internet based search of UV interaction with active ingredients.
 * Development of a laboratory procedure to test sunscreens with different PF. A correlation of time of protection vs. PF will be made. The surface on which they will be applied will be UV-sensitive beads.
 * Analysis of data and interpretation.

 * Summative Assessment
 * Discussion in front of the group of the conclusions.

Legacy Cycle
LOOK AHEAD AND REFLECT BACK

 * Goals
 * Students should be able to understand the interaction between science and technology and real world applications and impact.
 * Objectives
 * Students should start identifying chemicals and learn the interaction of radiation with matter.

THE CHALLENGE

You have recently graduated from UTPA with a degree in Chemistry and have just taken your first job at The RGV Sunscreen Company. The company wants to develop sunscreen lotions that will be tested with spring breakers at South Padre Island next year. Your task is to compare and evaluate commercial sunscreen products in order to formulate a new line of products. The first approach is to use UV sensitive beads to evaluate the sunscreens. How do you perform this challenge?

GENERATE IDEAS

 * Students will independently research the chemicals found in sunscreens and the mechanism of action of the active chemicals.
 * Students will investigate the correlation between sunscreens with different PF and time of protection.

MULTIPLE PERSPECTIVES

Students will brainstorm then discuss their ideas before designing and performing experiments.

RESEARCH & REVISE

Once data is collected, students will discuss their results and draw conclusions.

TEST YOUR METTLE

Students will compare their results against recommendations provided by the sunscreens’ manufacturers.

GO PUBLIC

Students will discuss their results among themselves and in front of the class.

LOOK AHEAD AND REFLECT BACK

Based on students’ conclusions and interpretations, the experiment could be refined into individual brands of sunscreens. It could also be expanded to study the effect into several days.

Test Your Mettle Quiz
'''True or False? (50 points)'''
 * 1) Water is an active chemical in sunscreens.
 * 2) Hydroxyacetone is an active chemical in sunscreens.
 * 3) The mechanisms of action in sunscreens are absorption and dispersion.
 * 4) Ethyl alcohol is an active chemical in sunscreens.
 * 5) Paraben is an active chemical in sunscreens.
 * 6) Zinc oxide is an active chemical in sunscreens.
 * 7) Mineral oil is an active chemical in sunscreens.
 * 8) The acronym PF means protection factor.
 * 9) Different sunscreen formulations might contain different chemicals but work as effective as one another.
 * 10) Hydroxyquinone is an active chemical in sunscreens.

Multiple choice (50 points)

11. UV sensitive beads are a good way to test sunscreen lotions because:
 * a) Beads are not useful
 * b) Beads do contain sunscreen lotion already
 * c) Beads contain UV-sensitive dyes
 * d) Beads interact with UV radiation
 * e) More than one of the above

12. UV sensitive beads change colors at the same rate (time) under the sun and in the lab, because:
 * a) It does not matter, UV radiation will reach the beads
 * b) The statement is not true, the beads change faster under the sun
 * c) The beads will change colors regardless of where they are placed
 * d) The statement is not true, the beads change faster in the lab
 * e) None of the above

13. Sunscreen lotions DO retard the time it takes the beads to change colors because:
 * a) No difference was observed experimentally with or without the use of sunscreen lotions
 * b) Lotions contain inactive chemicals that interact with radiation
 * c) Lotions contain active chemicals that interact with radiation
 * d) Lotions did not retard the time in any case
 * e) More than one of the above

14. Higher PF values ALWAYS results in lower UV absorption by the beads (longer times for the beads to change colors)
 * a) The statement is true
 * b) The statement is true for some PF values, but after a certain value, there is no difference
 * c) The statement is not true

15. Can the information learned in these experiments be used to understand how to prevent skin cancer?
 * a) Yes, because UV sensitive beads can be viewed as the skin
 * b) Yes, because the skin reacts with UV radiation similar to the way the beads react
 * c) No, because you cannot compare plastic beads to human skin
 * d) No, because the mechanisms of interaction between UV-beads and UV-skin are quite different
 * e) More than one of the above


text: User:Roy as Re

title: User:Roy as Re


text:
UTPA STEM/Tools/Template

When you copy/paste this template be sure to first click on the 'edit this page' tab or the formatting will not appear as it should. '''Start copying from below this line. Note: Some course information is in place as an example only.''' -

Course Title:

Lecture Topic:

Instructor:

Institution:

Backwards Design
Course Objectives

 * Primary Objectives- By the next class period students will be able to:
 * Use the derivative to solve extrema problems (Optimization problems);

 * Sub Objectives- The objectives will require that students be able to:
 * Solving real world problems using derivatives
 * Find absolute maximum or minimum value of a function f.

 * Difficulties- Students may have difficulty:
 * Constructe the needed function to maximize or minimize,and
 * Express the function with multiple variables in terms of a function with one variable as needed.

A load must be suspended 6 m below a high ceiling using cables attached to two supports that are 2m apart. How far below the ceiling x should the cables be joined to minimize the total length of cable used?
 * Real-World Contexts- There are many ways that students can use this material in the real-world, such as:
 * Engineering
 * Biology
 * Business and Economy
 * Chemistry ...ets
 * Example : Suspension System:

Model of Knowledge

 * Concept Map
 * Consider the following Graph:

 * Content Priorities
 * Enduring Understanding
 * 1. Understanding the problem: The first step is to read the problem carefully until it is clearly understood. Ask yourself: What is the unknown? What are the given quantities? What are the given conditions?
 * 2. Draw a Diagram: In most of the problems it is useful to draw a diagram and identify the given quantities on the diagram.
 * Important to Do and Know
 * 1. Introduce Notations: Assign a symbol to the quantity that is to be maximized or minimized. For example, A for area, h for height, S for Surface area, V for Volume, ... etc.
 * Worth Being Familiar with
 * Formulas related to the given problem.
 * How to find Derivatives and what it means
 * Worth Being Familiar with
 * Formulas related to the given problem.
 * How to find Derivatives and what it means

Assessment of Learning

 * Formative Assessment
 * In Class (groups)
 * text
 * text
 * Homework (individual)
 * text
 * text
 * Summative Assessment
 * text
 * text
 * text
 * text

Legacy Cycle
OBJECTIVE

By the next class period, students will be able to:
 * text
 * text
 * text

The objectives will require that students be able to: THE CHALLENGE
 * text
 * text
 * text

text

GENERATE IDEAS

text

MULTIPLE PERSPECTIVES

text

RESEARCH & REVISE

text

TEST YOUR METTLE

text GO PUBLIC

text

Pre-Lesson Quiz

 * 1) question
 * 2) question
 * 3) question

Test Your Mettle Quiz

 * 1) question
 * 2) question
 * 3) question

-

title: UTPA STEM/Tools/Template


text:
BitBitJump

BitBitJump is the simplest OISC (One-Instruction Set Computer) language, which allows calculations by only bit copying process without using conventional logic operations like AND, OR, XOR, NAND, or NOT. Its instruction is to copy one bit from one address to another and jump. The instruction has three operands A B C similar to OISC Subleq but with a different meaning. A is the address of the bit to copy from. B is the address of the bit to copy into. C is the address to pass the execution after copying of the bit is done.

title: BitBitJump


text:
User talk:Roy as Re

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title: User talk:Roy as Re


text:
User talk:WHolisticUK

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title: User talk:WHolisticUK


text:
User talk:Emg6321.f09.blanco

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title: User talk:Emg6321.f09.blanco


text:
User talk:Sadeghforghani

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title: User talk:Sadeghforghani


text:
User talk:Kendall Newton

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title: User talk:Kendall Newton


text:
OISC

OISC (One-Instruction Set Computer) is a RISC (Reduced Instruction Set Computer), which number of instructions is reduced to one, obviating the need for a processor opcode. It has been shown that such computer has the same computational power as any other computer.

In some implementations the instruction is subtract and branch unless positive, abbreviated subleq (subtract and branch if less or equal to zero), or sometimes subtract and branch if negative, which only differ by zero-inclusion. Some languages use a memory mapped instruction pointer. Branching is done by writing to IP in these implementations. More advanced memory mapping allows complex functionality such as arithmetic, but with the benefit of having a simple copy operation.

The subtract-and-branch-unless-positive operation usually has three parameters. subleq(a,b,c) (Subleq) subtracts a from b, stores the result in b, and then transfers control to the address in c if the result was non-positive. The simplest OISC is BitBitJump. Its instruction has 3 operands as in Subleq, but the meaning is: copy bit addressed by a to the bit addressed by b and jump to the address c. Neither Subleq nor BitBitJump have memory mapped registers for complex operations. The complexity is achieved by extensive code self-modification.

title: OISC


text:
User talk:Flacka Nestle

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title: User talk:Flacka Nestle


text:
User talk:Christina Igloo

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title: User talk:Christina Igloo


text:
User talk:Tyanaklark

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title: User talk:Tyanaklark


text:
User talk:Francisco newton

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title: User talk:Francisco newton


text:
User talk:BrittanySG

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title: User talk:BrittanySG


text:
User talk:DaltonRubel

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title: User talk:DaltonRubel


text:
User talk:Steve80~enwikiversity

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Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Steve80. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Steve80~enwikiversity that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:44, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 06:23, 19 April 2015 (UTC)

title: User talk:Steve80~enwikiversity


text:
User talk:Kioma

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title: User talk:Kioma


text:
User talk:Dangst Brackney

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title: User talk:Dangst Brackney


text:
User talk:Mizuki Dylai

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title: User talk:Mizuki Dylai


text:
User talk:Keri Coyada

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title: User talk:Keri Coyada


text:
User:U5080576

Name: Panukom Lapasthamrong ID: 5080576 Major: ICTM Minor: Chinese Club: Capoeira (Cheer and Dance) Contact: panukomau@hotmail.com

1)The best PC specs

 * Motherboard - GigaByte GA-MA790FXT-UD5P Motherboard AMD 790FX + SB750 Chipset
 * Processor   - Intel Core 2 Extreme QX9770
 * Memory      - OCZ DDR3 Gold Edition 6GB 1600MHz Triple Channel (2GBx3) 8-8-8-24
 * Case        - Zalman TNN 500 AF Case
 * Power supply - Power Supply ENERMAX EG701P-VH(SFMA) 600W
 * Floppy drive - Pioneer DV-655A
 * Hard Disk   - Barracuda ES.2 ST3500320NS 500GB SATA-II 32MB NCQ
 * CD/DVD      - DVD-RW SONY DRX-530UL DVD+/-RW
 * Keyboard    - Wireless Laser Desktop 6000
 * Mouse       - Wireless Laser Mouse 8000
 * Monitor     - MONITOR SAMSUNG PLASMA SAMSUNG 42
 * Sound card  - Creative Sound Blaster X-Fi XtremeMusic
 * Video card  - ASUS MARS 295 Limited Edition
 * Modem       - MODEM SMC TigerAccess EE Splitter7024/VSP

2)Facebook and Twitter
Twitter Facebook The reason I think Facebook should be aware of Twitter. Twitter has lesser functions than Facebook, but it can update information faster among connected people. Also, the famous person of America also use Twitter (President Obama).
 * Quick communication about current status or activities of friends.
 * There is lesser function than Facebook, so it is easier to update information.
 * Get connection between groups of friends
 * Rapid responsiveness
 * Users don’t have to be logged in to get updates; just use an RSS reader, which can update messages from blogs or other social network.
 * Limited functionality; find people, send brief messages, direct replies over-emphasis on follower counts
 * Small user base
 * Limit number of user logged in at the period of time
 * Limited to 140 characters per update
 * Use for communicate with social groups and do business.
 * Less immediate responses; unless you stay logged on continually
 * Facebook can set private zone that is not allowed for public.
 * Provide profile zone, categories of social group (school, workplace etc.)
 * Use simple text file to customize not HTML like My Space.
 * Provide photo album like Hi5 with no limit number of photo.
 * Provide business zone where people can post classified advertises for free.

3)Usage in different operating systems and the suitable operating system for net book.
2009:Window 7, Vista, Window 2003, Window XP, W2000, Linux, Mac Oct:4.4%	 ,18.6%	 ,1.5%	        ,63.3%	  ,0.7%	,4.2%	,6.8%
 * Statistics from http://www.w3schools.com/browsers/browsers_os.asp

Sep:3.2%	 ,18.3%	 ,1.5%	        ,65.2%	  ,0.8%	,4.1%	,6.5%

Aug:2.5%	 ,18.1%	 ,1.6%	        ,66.2%	  ,0.9%	,4.2%	,6.1%

Jul:1.9%	 ,17.7%	 ,1.7%	        ,67.1%	  ,1.0%	,4.3%	,6.0%

Jun:1.6%	 ,18.3%	 ,1.7%	        ,66.9%	  ,1.0%	,4.2%	,5.9%

May:1.1%	 ,18.4%	 ,1.7%	        ,67.2%	  ,1.1%	,4.1%	,6.1%

Apr:0.7%	 ,17.9%	 ,1.7%	        ,68.0%	  ,1.2%	,4.0%	,6.1%

Mar:0.5%	 ,17.3%	 ,1.7%	        ,68.9%	  ,1.3%	,4.0%	,5.9%

Feb:0.4%	 ,17.2%	 ,1.6%	        ,69.0%	  ,1.4%	,4.0%	,6.0%

Jan:0.2%	 ,16.5%	 ,1.6%	        ,69.8%	  ,1.6%	,3.9%	,5.8%

 * Uses in Window 7, Vista, Linux and Mac tend to increase during 2009. Window XP that rank the most popular operating system with 63.3% usage tends to have a decrease in its popularity. The reason might be that Window 7 has already fixed some problems in Window XP and Vista, so people want to switch from XP or Vista to Window 7.
 * Ubuntu is faster than Window XP, but Ubuntu could have some problems with function key and Wi-Fi system. So, Window XP users might not be familiar with Ubuntu system. Since the release of Window 7 after Window Vista, some people have a good feeling on 7, they say 7 has fixed the problems occurred in XP and Vista. Therefore, I think Window 7 should be the best operating system for net book.

title: User:U5080576


text:
Joint Entrance Examination/AIEEE 2009/Q086 SHM

Test Text

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text:
Joint Entrance Examination/AIEEE 2009/Q083 YOUNGS MODULUS

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Joint Entrance Examination/AIEEE 2009/Q084 ELECTROSTAT

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text:
Joint Entrance Examination/AIEEE 2009/Q087 ENERGY CONSERVATION

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text:
User:Khunnongoak

My name is Chittrawat Kunnaloke. Oak is my nickname. I'm studying in TIM major. 'Falcon Northwest Mach V (Intel Core i7-965 Extreme Edition) Windows Vista Ultimate SP1 (64-bit); 3.79GHz (overclocked) Intel Core i7-965 Extreme Edition; 12GB 1,066MHz DDR3 SDRAM 2) 1GB ATI Radeon HD 4870X2 graphics card: 1TB 7,200rpm Hitachi hard drive; 8 0GB Intel X-25 solid state hard drive Optical drive 20xdual-layer DVD burner with lightscribe 4X dual layer bluray burner

1) How is Facebook and Twitter the same?

Facebook and Twitter are the same for many reasons. First of all, they are both online communities that people can see and comment each other's profile easily.Second, Facebook and Twitter also allow people to update their status that people can see it. The last, both of these programs have to create account in order to make it worked.

I think Facebook is worried because Twitter is becoming more popular than before. Many film stars also use Twitter because they can write the schedule for their fanclub to follow it and they dont need to spend time for posting picture like Facebook. That's why normal people play Twitter more than previous time. Furthermore, they don't have to worry about their pictures that sometimes some people will save their pictures and post them elsewhere that the owners don't want to post it. Therefore, it will be a problem in the newspaper that we can see everyday. The last, sometimes people who play Twitter want to write a dairy to tell story or share something to others.

what operating systems should install on netbook?

- Linux

title: User:Khunnongoak


text:
User:Sandysansine

My name is Sarunporn Yuen. My nickname is Sansine. My major is TIM. My birthday is on January 31, 1989. I like swimming. My favorite colour is red, white and black.

HW#1Best of the Best

•Motherboard: Supermicro SUPERMICRO H8QC8 - extended ATX - nForce Pro 2200 - Socket 940 - UDMA133, SATA (RAID), Ultra320 (RAID) - 2 x Gigabit Ethernet

•Processor: Core2 Extreme QX9770 3.20GHz

•Memory: DDR SDRAM and speeds are 667 MHz to 1 GHz

•Casing: HIP (8806) Casing Silver Black

•Power supply: APC Symmetra PX 500KW Scalable To 500KW W/ Right Mounted MNT Bypass

•Hard drive: Micronet Platinum RAID Sata, Desktop Esata, 5.0TB 5X1000GB Hard Drive & RAID

•CD/DVD or other optical drive: LaCie d2 External Blu-ray Reader/DVDRW DL Writer

•Video card: Sun Microsystems Sun XVR-4000 Graphics Accelerator Mfr p/n 540-5470

•Floppy drive: HP/Compaq refurb Proliant ML350R G4P Xeon 3.4G 1P 2MB 1024mb U320/CD/Floppy Rack Server with Windows Server 2003 (Refurbished)

•Keyboard: IKEY DT-2000 Intrinsically Safe Keyboard (DT-2000-IS)

•Mouse: A4tech OP-620D 2X Click Optical Mouse

•Monitor: Toshiba P56QHD-4 56 INCH LCD 3840 X 2160 W/QUAD DVI INPUT

•Sound card: Dialogic DMV600A2E1CPCI PCI Board

•Graphics Card: nVIDIA or Radeon with 128 or 256 MB of dedicated Video RAM

•Modem: Polycom VSX 7000 SERIES NETWORK MODULE

HW#2 Twitter Faceoff

1) How is Facebook and Twitter the same?
 * Facebook and Twitter is the same for many reasons. Firstly, they are both online communities where you can socialize with friends or other people all over the over. They both allow you to add or "follow" your friends online and see what they are doing or what they want to update. Basically, you can be updated on how your friends are doing at the moment. Facebook and Twitter both allow you to update your status or the stories that you want to share. Your friends can see what your status is and leave a short comment on it.

2) Why do you think Facebook is worried about competition from Twitter?
 * I think that Facebook is worried because Twitter has similar features that Facebook has. Twitter is also becoming more popular considering that many famous hollywood stars or people are using twitter to update their schdules, so their fanclub can follow easily. Twitter also is sort of "safer" than Facebook because all you can do is update status, where as in Facebook comments and photos are posted. That's why many celebrities use twitters instead so that fans can also "follow" them and keep in track with their updates. Basically Twitter is almost like a blog that you tell your topics and then tell more stories about it. You can write in the whole essay while facebook doesn't have because sometimes people want to use twitter as their diary to tell some story to other people or their friends. Therefore, Facebook could be worried because of the popularity it is getting from celebrities and people around the world. Moreover, Twitter can keep you update stories and you can go back and read like blog but facebook like more community that people always update thier status in short time then change to another status which some people may not catch it becasue it very fast and your frinds also update their things, so it hard to go back ad look for the previous one.

HW#3 What operating system should install on your netbook?

In my opinion, if i buy a new netbook, i would prefer to install Linux to be my operating system. As netbook is the computer that specific on getting on the internet and do some less complicated work than laptops do. Do not need to do photoshop, play game(outside of Web-based games), etc. Thus, there are no need to install big operating system like winsdow in order to save the space on the computer and one thing any purchaser of a netbook should know is that space is primary factor. Linux is suite for networking operating system because it works well with other Operating System. it’s secure. Also, it’s fast. Moreover,linux is costless than other OSes.

title: User:Sandysansine


text:
User:Gasin01

My name is Gasin Mahintharathep. My nick name is Tor, and I study in TIM ^^

-

Motherboard EVGA X58 LGA1366 Intel ATX SLI Processor 3.79GHz Intel Core i7 965 Extreme Edition

Memory 12GB of 1,066MHz DDR3 SDRAM

Case Cosmos S

Power supply ATX power supply

Floppy drive

Hard drive 1TB 7,200RPM Hitachi hard drive, 80GB Intel X-25M solid-state drive

CD/DVD Lite-On - iHAS324

Keyboard Optimus Maximus keyboard

Mouse Logitech MX1100 Cordless Laser Mouse

Video card 2 x 1GB ATI Radeon HD 4870 X2

Monitor The Samsung P2370L LED Monitor Review

Sound card Blaster X-Fi

Modem US Robotics USR 9108 --

1.Facebook and Twitter are the same in terms of communication. In facebook, when someone need to talk to their friends, they just post on their wall. then their friends will see it. Like Facebook, people can put something they want to tell on the top box in order to tell every body. However, there are some differences between Facebook and Twitter. It is a sms service of Twitter which allow people to update their status and send it to their mobile phone' friends for free.

2. Facebook have to worry about compettition with Twitter because even though Twitter do not have many games or applications for thieir user as muuch as Facebook, it concentrates on communication between people. They provide a free 13,000 sms each year for each user, so people who like to chat or communicate with their friends will give more attention on Twiiter.

title: User:Gasin01


text:
User:Praewrapee

my name is praewrapee satayanon. my nickname is praew. i'm 20 years old. i majored in TIM.

The best specs for PC

Motherboard: Asus M2N-X Plus

Processor: AMD™ Athlon X2™ 4050e box (AM2) 2.1ghz 1MB L2 Cache Socket AM2 45W 65nm

Memory: DDR SDRAM and speeds are 667 MHz to 1 GHz.

Ram: Kingston ddr1 ddr2 single, dual channel modules

PSU: Generic Power Supply (all variations) (500w,550w)

DVD Writer: LG™ 22x dvdrw dual layer sata ls lightscribe

HDD: Seagate sata 160gb 8mb

Casing: HIP (8806) Casing Silver Black vp

Keyboard: A4tech KBS-720 A-Shape Natural Keyboard

Mouse: A4tech OP-620D 2X Click Optical Mouse

Monitor/LCD: LG 16" (W1642sbk) wide black

Graphics Card: nVIDIA or Radeon with 128 or 256 MB of dedicated Video RAM

2nd assignment due 19th october,2009

1.how is twitter and facebook the same?

- both are a social networking

- users can upload photos video and share links.

- also users can tag their photos

- both facebook and twitter users can update status.

- both reconnect with oldfriends.

- they both have many fun applications.

- facebook can poke friends and twitter can nugde.

2.Why do you think Facebook is worried about competition from Twitter?

Twitter is a community built into it with its own set of rules and accepted behaviors. So as new users connect twitter they develop their community and become part of it sooner than facebook where the user has to go through the learning curve for each user one user at a time.

title: User:Praewrapee


text:
User:Pornsiree

my name is Pornsiree Charatsrivilai my nickname is Patty my major is TIM Now, I'm 20 years old

Look at different operating system (how many use it)

Firstly, i would like to explain deeply about operation system. An operating system is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless. Also, an operating system can be divied into several types.As computers have progressed and developed so have the types of operating systems. Below is a basic list of the different types of operating systems and a few examples of operating systems that fall into each of the categories. Many computer operating systems will fall into more than one of the below categories. A GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse. See our GUI dictionary definition for a complete definition. Below are some examples of GUI Operating Systems, such as System 7.x Windows 98 Windows CE. A multi-user operating system allows for multiple users to use the same computer at the same time and/or different times. See our multi-user dictionary definition for a complete definition for a complete definition. Below are some examples of multi-user operating systems, such as Linux Unix Windows 2000. An operating system capable of supporting and utilizing more than one computer processor. Below are some examples of multiprocessing operating systems, such as Linux Unix Windows 2000. An operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking operating systems, such as Unix Windows 2000. Operating systems that allow different parts of a software program to run concurrently. Operating systems that would fall into this category are:Linux Unix Windows 2000.

What operating systems should install on your netbook?

Nowadays, netbook become more popular with advanced techonolgy of operation systems. With high speed of ntebook, we should choose a good operation system to support your netbook. Linux is an answer for all net book. Firstly, if you have limited screen real estate, why not use a desktop interface designed for that real estate? Instead of using the standard desktop metaphor, the Eeebuntu Netbook Remix desktop introduces an interface that is perfectly suited for the desktop size offered by netbooks. This interface makes the netbook experience far more efficient than any Windows interface. Sure, it’s not what you’re used to. But it’s cleaner, faster, and more user-friendly, and it will soon become familiar to you. And this interface isn’t different just for the sake of being different. It’s obvious that the interface was well thought out and aimed at the new PC user as well as the new netbook user. When I purchased my last netbook, one of the first things I did was install Eeebuntu (over the purchased Xandros Linux). Why did I do this? Because Xandros is a limited operating system, whereas Eeebuntu is a full-blown Linux distro that happens to install on an Eee PC. When using Eeebuntu on a netbook, you really feel like you have the power of a full laptop at your fingertips. You can even install a full-blown LAMP (Linux, Apache, MySQL, PHP) server on your netbook if you like. lastly, Are you sure Windows 7 will work on your Eee PC? And if it does, how well will it work? You can be sure the next release of Eeebuntu will work on your Eee PC because it was made for that hardware. From release to release, you never know what a Windows operating system will work on. Vista was a total bust on the netbook. Windows 7 has yet to be released or to even prove it can work well on the netbook hardware. And XP is eventually going to meet its demise. So why take a chance on purchasing hardware that Microsoft will make irrelevant with its next release? Instead, rest assured your Linux OS will continue to work whenever you upgrade it.

Twitter Faceoff How is Facebook and Twitter the same? I think 1. both are used for communicating 2. both show status update and could be edited 3. both have applications Why do you think Facebook is worried about competition from Twitter? this might because Twitter is lighter and faster version than Facebook. another reason in case you have numerous followers on Twitter, there’s a much greater likelihood that you’ll have a large number of fans on Facebook. Moreover, although you don’t have time to spend on Twitter, you can reach a lot more people than Facebook. Twitter will not be annoyed by many quizzes like Facebook.

'''Sunday, September 27, 2009 Best of the Best Homework due October 5, 2009, by 11:59 pm

Find the specs for the best PC computer and post it on your account page at Wikiversity. The hardware in bold are the specs I'll pay most attention to.

Motherboard: ASUS P7P55 Deluxe Motherboard & Intel Core i7 860 Processor w/ Fan Bundle 2133 MHz

Processor: Intel Core 2 Quad Q9550 Processor BX80569Q9550 - 2.83GHz, 12MB Cache, 1333MHz FSB, Yorkfield, Quad-Core, Retail, Socket 775, Processor with Fan

Memory: Patriot Viper Tri Channel 6GB PC10666 DDR3 Memory - 1333MHz, 6144MB (3 x 2048), CL7

Case: Cooler Master HAF 932 Full Tower Black Case

Power Supply: Ultra LSP750 750-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty

Floppy Drive: Ultra ULT40366 3.5" Floppy Drive with Multi Card Reader

Hard Drive: Hitachi 7K1000.B Hard Drive - 1TB, 7200RPM, 16MB, SATA-300, OEM

DVD/CD: Plextor PX-880SA DVD/CD Super Multi Writer - DVD+R 24X, DVD+RW 8X, DVD-RW 6X, DVD-RAM 12X, CD-R 48X, CD-RW 32X, SATA, Lightscribe

Keyboard: Microsoft Wireless Optical Desktop Pro Keyboard and Mouse Combo

Mouse: Logitech Cordless Optical Trackman

Video Card: Sapphire Radeon HD 5870 Video Card - 1GB GDDR5, PCI-Express 2.0, CrossFireX Ready, Dual DVI, Dipslay Port, HDMI w/Dirt2 & BattleStation Games Included

Monitor: I-Inc iF-281DPB 28" Widescreen LCD Monitor - 1920x1200 WUXGA, 800:1 Contrast, 3ms, HDMI, VGA, Energy Star, Tilt & Swivel Stand, w/Speakers

Soundcard: Creative Labs 70SB088600002 SoundBlaster X-FI Titanium Fatal1ty Pro PCIe Sound Card

Video Card: Sapphire Radeon HD 5870 Video Card - 1GB GDDR5, PCI-Express 2.0, CrossFireX Ready, Dual DVI, Dipslay Port, HDMI w/Dirt2 & BattleStation Games Included

Modems: Hiro V.92 56k Low Profile PCI Data Fax Modem, RoHS, Vista Ready

title: User:Pornsiree


title: File:EIP-24-9-2009.pdf


text:
User:Nemma

'''My name is Siriporn Wijittip

My nick name is Emma

I study @ muic

My major is "TIM"

Nice to meet you :]]'''

Best of the Best?

Processor: Core i7 Extreme 975 @ 5859mhz on LN2

Memory: 6144MB DDR3 PC3-15000 @ 1010mhz CL7.0 7-6-21 1T

Motherboard: Asus P6T6 WS Revolution (X58 chipset)

Global Rank: 1st - 94.2 points

Hardware: Core i7 Extreme 975

Monitor: Samsung	SyncMaster (245BW) LCD Monitor

-LCD display / TFT active matrix,

- 24 in - Widescreen, 1920 x 1200 / 60 Hz,

- Silver, 0.27 mm

05.10.09

http://twitter.com/sn3mma

05.10.09

How is Facebook and Twitter the same?

=> Both can update status, post things up, upload pictures + comments.

Why do you think Facebook is worried about competition from Twitter?

=> More people is using twitter and according to some of my friends, they even think that twitter is better and more design on their homepage.

Therefore, it is more interesting to use twitter.

Moreover, in twitter, you are allow to design and do your own webpage, which facebook cannot do.

However, both web sites are owned by the same person!

title: User:Nemma


text:
User:FajitaRay

Bio
Raymond Cantu, Culinary, 7th quarter, Summer '09

Midterm Research Projec
Glen "pops" Freeman - Homeless Public performer.

Final Public Art Project
DHMO hoax

Self-Assessment
I really liked this class, my life doesn't only revolve around food, but art as well, and thats why I came to art school. I felt good that finally one of my Gen Ed classes here at the Art Institute did teach something about art. It is something I will think about and play around with on my spare time. I am glad that Seattle's art scene and food scene can go hand and hand. With the Final public art assignment, I had a few I ideas, but when I settled on the DHMO Hoax, which didn't not succeed. I think if I did it sooner with more time for people to react; or did one of my other ideas, I think I could have got a better reaction. I really wanted to get a lot of peoples reaction. I didn't. It made me sad. :'( But whatevskis. I still loved the class. Thanks Steve!

P.S. Pops is in the studio right now recording an album!

title: User:FajitaRay


text:
User talk:Molanie bp

I'm low- tech><.

 Hello Molanie bp, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.

I'm not good at com tech.><

And don't forget to explore Wikiversity with the links to your left. Be bold to contribute and to experiment with the sandbox or your userpage, and see you around Wikiversity! --mikeu talk 12:59, 3 October 2009 (UTC)

HW.1 CPU :INTEL XEON QUAD-CORE X5460 3.16GHZ 1333MHZ FSB ACTIVE/1U PROCESSOR WITH 12MB CACEH IN LGA771 *2 =48,000*2=96,000 Baht

M/B :Intel® Desktop Board D5400XS RETAIL BOXD5400XS EATX 5400 CHIPSET INTEL CORE 2 EXTREME QUAD-CORE PROCESSORS IN LGA771 SOCKET WITH 1600FSB OR TWO XEON LGA771 SOCKET PROCESSORS. FBDIMM 800MHZ, 4*PCI-E x16 SLT. =23,780 Baht

Ram :Corsair TWIN2X4096-9136C5DF 4GB (2x XMS2 2GB) Twin2X PC-9136 (1142 MHz) DDR2 RAM, 2x240-pin DIMMs, Non ECC, Unbuffered, 5-5-5-15 (EPP) 5-5-5-18 (JEDEC), 64Mx8 DRAMs, Dual-path Heat Exchange (DHX) Technology, E.P.P Technology, Includes Dominator Airflow Fan, Lifetime warranty = 12,800 Baht

'Harddisk' : Seagate - CHEETAH 15K.5 300GB 15K RPM SAS [SGA0345] *5 = 21,135 * 5 = 105,670 Baht

VGA : ATI PCIe FireGL V7350 1GB Stereo 3D, 1GB 512Bit GDDR3 @ 1300MHz Dual DVI-I / 3D Stereo (incl. 2 x DVI-I to D-Sub Adapters) [31000-00-40R] ATI PCIe FireGL V7350 1GB Stereo 3D, 1GB 512Bit GDDR3 @ 1300MHz Dual DVI-I / 3D Stereo (incl. 2 x DVI-I to D-Sub Adapters) [31000-00-40R] *4 =77,022*4 = 308,088 Baht

Sound Card:Creative Sound Blaster X-Fi Elite Pro with I/O Console & IR Remote - 7.1Ch, 24-Bit Crystallizer/SoundFont, 64MB X-RAM, EAX5.0, CMSS 3D, SuperRip = 11,418 Baht

PSP : NEW! 1000W Corsair HX-1000 ATX Modular Power Supply, 140mm fan, 3-Way SLI Certified, 6 PCI-E Connectors, Universal AC input 90~264V = 9,460 Baht

Case :Silverstone TJ10B-WES Black Tower Case with Aluminium Front Panel/Door, 2.0mm aluminum body, SSI, Extended ATX, ATX, Micro ATX, No PSU = 12,000 Baht

Water Cooling:Zalman Reserator XT Water Cooling System, Active/Passive Cooling, Alarm System, Monitoring Display, Aluminium, 2 Ball-bearing, 22-34dBA, Black *2 =14,918*2 = 29,837 Baht

Keyboard : MS WRLS ENTMNT DSK/TP 8000 XP/VISTA = 10,878 Baht

Monitor : Samsung 30 305T Wide TFT Monitor - Black, Max. Resolution 2560x1600, 6ms Response Time =56,338*2 = 112,676 Baht

Speeker : Sony SPEAKER BUNDLE (SAWVS300+SSFCR300H) Components not sold separate as single units 8 Ohm, 150W, 81dB Sensitivity, 120 Hz - 50, 000 Hz Sub Woofer- 15cm Bass Driver, 150W Output = 33,142 Baht

TV-Tuner :HauppaugeTV PVR-USB2 USB CONNECTIVITY FOR NOTEBOOK AND PCS 1 COMPOSITE 1 S-VIDEO CONNECTOR SOFTWARE PROVIDED = 15,279 Baht

UPS : Product Description:Powerware 9125 - UPS - 3000 VA Device Type:UPS - external Rack Size:2U = 86,040 Baht

Radiator : Alphacool NexXxos Xtreme Pro III Rev.2 Radiator *2 = 6,157 Baht

CD-ROM :LG WRITE BLURAY HDDVD 6xBD-R, 2XBD-RE, 3xHD-DVD, 16xDVD+-R LS WRITE BLURAY HDDVD 6xBD-R, 2XBD-RE, 3xHD-DVD, 16xDVD+-R LS = 10,458 Baht

WIRELESS Card : D-Link - XTREME N WIRELESS LAN PCI EXPRESS [DLK0091] = 3,557 Baht

Total = 700,000+

1.How is Facebook and Twitter the same?

Facebook and Twitter are a kind of center to gather me and friends online. We can post pictures, comment, talk, write a

journal,play games, catch up what friends doing. Most of the time I talk with friends, look at photos, and chat usually.

2.Why do you think Facebook is worried about competition from Twitter?

I think Twitter is more about celebs. Now people pay a lot attention on celeb's life and catch up them on Twitter.

More than that, I don't know. Honestly, I like facebook a lot more. It's more updated in every second and it shows how long

the post has been updated in every minute actaully. Facebook has chat windows, but Twitter doesn't and Facebook has more

things to do also. Friends for Sales where you can do e-human trade, Barn Buddy where you can steel your friend's vegies

without getting caught, and Farmville where you can have animals and all kinds of plants to grow and harvest.

Look at different operating system (how many use it)
According to http://wiki.answers.com, 90% of people use Microsoft Windows!!!

-What operating systems should install on your netbook?

I would prefer Microsoft Windows over Mac or Linux or etc, because it took the biggest market so it is easy to find this kind of operating system everywhere such as in university, working office, school, internet cafe, etc. They all use Microsoft Windows. When it widly used, I can use this Microsoft Windows anywhere and be able to use it influentlly. Windows has office programs that handy and easy to understand and no need to use any specific computer command unlike Linux. I don't use any big graphic program, so it would be a waste to buy a Mac. To install Windows is easy, 300 baht can get you every software, in Thailand!!!Pirated versions also avalible!!! Not expensive at all compare to those developed countries.

title: User talk:Molanie bp


text:
Norwegian Language/Introduction

Alphabet
The alphabet is largely the same as the English alphabet, with the addition of three vowels. These three vowels are added to the end of the alphabet:
 * Ø
 * Æ
 * Å

Pronunciation
For example the Norwegian word, ja(yes) is pronounced yaw. For example the norwegian word for the month March, Mars. Mars is pronounced similar to the English word marsh. For example the norwegian verb for driving, kjøre, is pronounced chyøre.
 * J; The Norwegian J is given the pronunciation of the English y.
 * RS; In standard bokmål the combination of an r and an s produces a 'sh' sound.
 * KJ; The norwegian KJ sounds similar to a hissing sound followed by a y, the sound can also sound similar to the ch in the German language. this sound is also known as the voiceless velar fricative
 * Ø; Ø makes a sound similar to the i in the english bird.
 * Æ; Æ makes a sound similar to the a in the english dam.
 * Å; Å makes a sound similar to the o in the english corn.

Statement
Word order in a basic Norwegian sentence follows the Subject Verb Object word order. This is also the same order typically used in English. A basic sentence would go as follows; " Jeg (I) spiser (eat) epler (apples)."

Interrogative
Interrogative sentences follow Verb Subject Object word order. In norwegian, 'Spiser du epler?' Word for word, that would translate to 'Eat you apples?', but it is as grammatically correct as 'Do you eat apples?' A basic interrogative sentence might be; " Spiser (Eat) du (you) epler (apples)?"

title: Norwegian Language/Introduction


text:
User:Wasted zombie wav

= Andrew's Page... = ...ABOUT ME... A little bit about me... (more later)

...LINKS...

 * FACEBOOK
 * MYSPACE
 * ResearchGate
 * The Independent
 * WiserEarth
 * w3schools, web building tutorials
 * CiteSeerX, Scientific Literature Digital Library and Search Engine
 * PubMed
 * SciSpace.net
 * Flock

title: User:Wasted zombie wav


text:
User talk:Karn~enwikiversity

Best O.S. for Netbook is Windows 7, Linux could fit as well but it is too complicated and most people find it inconvenient to use.

Your account will be renamed
Hello,

The developer team at Wikimedia is making some changes to how accounts work, as part of our on-going efforts to provide new and better tools for our users like cross-wiki notifications. These changes will mean you have the same account name everywhere. This will let us give you new features that will help you edit and discuss better, and allow more flexible user permissions for tools. One of the side-effects of this is that user accounts will now have to be unique across all 900 Wikimedia wikis. See the announcement for more information.

Unfortunately, your account clashes with another account also called Karn. To make sure that both of you can use all Wikimedia projects in future, we have reserved the name Karn~enwikiversity that only you will have. If you like it, you don't have to do anything. If you do not like it, you can pick out a different name.

Your account will still work as before, and you will be credited for all your edits made so far, but you will have to use the new account name when you log in.

Sorry for the inconvenience.

Yours, Keegan Peterzell Community Liaison, Wikimedia Foundation 23:40, 17 March 2015 (UTC)

Renamed
 This account has been renamed as part of single-user login finalisation. If you own this account you can |log in using your previous username and password for more information. If you do not like this account's new name, you can choose your own using this form after logging in: . -- Keegan (WMF) (talk) 06:13, 19 April 2015 (UTC)

title: User talk:Karn~enwikiversity


text:
User:Jitkasemj

(((_ ¡¡Hello!!  _))

My name is Jitkasem Jinakan or Ply is my nickname.

I study in MUIC. My ID: 5180403

The best PC
This account is for Computer Essentials Icns141 with Mr. Brian !!! , the best teacher in MUIC !

Alienware

Processor Intel® CoreTM 2 Extreme Mobile Processor QX9300

Memory 8GB Dual-channel 1333MHz DDR3 SDRAM (2 x 4GB)

Hard Drive 1TB2 7200RPM SATA RAID 0 (2 x 500GB)

Display/Monitor 17.0" Beyond HD 1200p WUXGA (1920x1200) CCFL Display with TrueLifeTM

Sound CardIntegrated High-Definition 5.1 Surround Sound Audio

KeyboardDellTM AlienFX®  Illuminated Keyboard

Wireless CardDell Wireless 1510 802.11n Half Mini-Card

Dual Layer Blu-ray Disc Reader (BD-ROM, DVD±RW, CD-RW )

title: User:Jitkasemj


text:
User talk:Jitkasemj

The best PC
AlienwareTM Aurora ALX

•AlienwareTM Approved Intel®  X58 mATX Motherboard

•AlienwareTM 875 Watt Multi-GPU Approved Power Supply

•Overclocked Intel® CoreTM i7 975 3.60GHz (8MB Cache) Quad Core Processor

•6GB and 12GB Triple-Channel 1600MHz DDR3

•Internal Wireless Bluetooth® 2.1+ Enhanced Data Rate

•Drive 1: 24X Dual-Layer Burner (DVD±RW)

•Drive 2: 6X Dual Layer Blu-ray DiscTM Burner (BD-RE, DVD±RW, CD-RW)

•7,200RPM Hard Drives - 500GB

•Dell 24" & 20" Wide Aspect Flat Panel LCD Monitors

Reference: http://www1.ap.dell.com/in/en/home/desktop-gaming/alienware-aurora-alx/pd.aspx?refid=alienware-aurora-alx&s=dhs&cs=indhs1

Twitter Faceoff
Facebook is a website that provides connections between people on the internet. People can leave comments on the wall, photos etc. They can also meet new people according to their hobbies, favorites and sociaty in the form of "group" such as MUIC group.

Twitter is also a website that people update their news on the webpage. In my opinion, Twitter is like a chatroom that people on the list can communicate with each other on the same page. Just one click on posting, everyone on the list immediately see the same thing whcih is very quick.

Personally, Facebook is now worried about the competition with Twitter because of its convenience. A post on the Twitter appears to hundreds of people on the list that you do not have to go to individual profile to post a comment like Facebook. Therefore, I think one reason that Facebook is still more popular because it can be connected by mobile phone such as Iphone and Black Berry, and it also rings on the phone when there is a notification. If Twitter is put on the mobile phone I think it is going to be more popular than facebook.

Operating system on my netbook
Window is the mus suitable operating system for my netbook because it is easy to use, and most

software is supported by Window.

title: User talk:Jitkasemj


text:
User talk:Hmello823

 Hello Hmello823, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.

And don't forget to explore Wikiversity with the links to your left. Be bold to contribute and to experiment with the sandbox or your userpage, and see you around Wikiversity! --Mu301Bot 14:49, 25 September 2009 (UTC)

Feel free to leave a message on my talk page if you have any questions or need help. --mikeu talk 14:32, 25 September 2009 (UTC)

title: User talk:Hmello823


text:
User talk:Katiegc615

 Hello Katiegc615, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.

And don't forget to explore Wikiversity with the links to your left. Be bold to contribute and to experiment with the sandbox or your userpage, and see you around Wikiversity! --Mu301Bot 14:49, 25 September 2009 (UTC)

Feel free to leave a message on my talk page if you have any questions or need help. --mikeu talk 14:33, 25 September 2009 (UTC)

title: User talk:Katiegc615


text:
User talk:Mattyb2024

 Hello Mattyb2024, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.

And don't forget to explore Wikiversity with the links to your left. Be bold to contribute and to experiment with the sandbox or your userpage, and see you around Wikiversity! --Mu301Bot 14:49, 25 September 2009 (UTC)

Feel free to leave a message on my talk page if you have any questions or need help. --mikeu talk 14:33, 25 September 2009 (UTC)

title: User talk:Mattyb2024


text:
User talk:Bdylan823

 Hello Bdylan823, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.

And don't forget to explore Wikiversity with the links to your left. Be bold to contribute and to experiment with the sandbox or your userpage, and see you around Wikiversity! --Mu301Bot 14:49, 25 September 2009 (UTC)

Feel free to leave a message on my talk page if you have any questions or need help. --mikeu talk 14:33, 25 September 2009 (UTC)

title: User talk:Bdylan823


text:
User talk:Nitrotica Quincy

 Hello Nitrotica Quincy, and welcome to Wikiversity! If you need help, feel free to visit my talk page, or contact us and ask questions. After you leave a comment on a talk page, remember to sign and date; it helps everyone follow the threads of the discussion. The signature icon in the edit window makes it simple. To get started, you may

 * Take a guided tour and learn to edit.
 * Visit a (kind of) random project.
 * Browse Wikiversity, or visit a portal corresponding to your educational level: pre-school, primary, secondary, tertiary, non-formal education.
 * Find out about research activities on Wikiversity.

 * Read an introduction for teachers and find out how to write an educational resource for Wikiversity.
 * Give feedback about your initial observations
 * Discuss Wikiversity issues or ask questions at the colloquium.
 * Chat with other Wikiversitans on #wikiversity-en.

And don't forget to explore Wikiversity with the links to your left. Be bold to contribute and to experiment with the sandbox or your userpage, and see you around Wikiversity! --Mu301Bot 14:49, 25 September 2009 (UTC)

Feel free to leave a message on my talk page if you have any questions or need help. --mikeu talk 14:33, 25 September 2009 (UTC)

title: User talk:Nitrotica Quincy