Our practical was about examining the reaction of an enzyme in a particular type of food, in which the enzyme break down food and digest the existing proteins inside the materials (food). And to investigate the rate of the enzymes reaction when its get
Report for Group 4 Object Name: Mena Nadum Class: IB07 Date: 05/19/09 Introduction: Our practical was about examining the reaction of an enzyme in a particular type of food, in which the enzyme break down food and digest the existing proteins inside the materials (food). And to investigate the rate of the enzyme's reaction when its get influenced by different types of pH levels. The enzyme we chose for our lab is the Trypsin. The reason why we chose this particular enzyme is first, for the fact that Trypsin has a very high activity which means its reaction is fast and it digests proteins completely in short period of time. Second, it could still react with a wide range of different pH levels. Our experiment was based on the theory that implies: reactions of the enzyme with very high or very low pH level will be very slow. While the reaction reach its high speed if the pH level is at 8 which is called as the optimum of the rate of reaction of the Trypsin. Apparatus The material that is used to perform the experiment is Milk solution. pH solutions: pH 3, pH 4, pH 5, pH 7, pH 8, pH 9 and pH 10. 0.1 g of Trypsin enzyme. Spectra Photometer. A device that maintains the temperature constant. Procedure At the beginning of the experiment, we prepared all the pH solutions needed. And then we started performing our lab by first, mixing the enzyme with one pH level and then
Supply Chain Management for Kinley Project
2010 PROJECT ANALYSTS ALTAYE TEKELMICHAEL DIAN VEGAWATI MERRY OKTARINA TABLE OF CONTENTS . INTRODUCTION 2 2. DISTRIBUTION CENTRE LOCATION 2 2.1 United Kingdom 3 2.2 Slovakia 3 2.2 Germany 3 3. MAKE OR BUY ANALYSIS 4 3.1 Capacity and Knowledge 4 3.2 Product 4 3.3 Cost Perspectives 4 3.4 Benefits 4 3.5 Disadvantages 5 4. TYPE OF RELATIONSHIP 5 4.1 Procurement Strategy 5 4.2 Retailer Supplier Partnership 6 5. RISK MANAGEMENT 7 5.1 Natural Disaster 7 5.2 Terrorist Attack 8 5.3 Market Change 8 5.4 Port Delays 8 5.5 Supplier Performance 8 6. RISK MITIGATION STRATEGIES 8 6.1 Dealing with Unknown-Unknown Situation 8 6.2 Global Risk 8 6.3 Control 9 7. RECOMMENDATION 9 APPENDIX 1 10 APPENDIX 2 13 APPENDIX 3 14 SOURCES 15 . INTRODUCTION Kinley is one of the leading manufacturers in peripherals and connectivity solutions for users of computers and consumer electronics in the world. Since its establishment, Kinley has become the market leader across its production line. Nowadays, with a single European distribution centre in United Kingdom, where it was largest market in Europe and meets market demands for 2.000 to 3.000 ships to send to Europe. However, as one of the fastest growing companies in the world, Kinley Management's forecast of market demands will be higher in the future. In order to response market needs, Kinley would anticipate future
Waves and friction
? Aim "To investigate if the performance of a swimmer is affected by the waves occurring in the swimming pool from other swimmers?" Background knowledge A wave is a periodic disturbance whereby energy is conveyed from one place to another in a medium without the transfer of matter. In this experiment of ours the main properties that will affect the swimmer are; Amplitude Wave length and frequency. We say this because the higher the amplitude the more the energy the wav possesses and the aster the frequency the more momentum the wave has at the wave front. Thus with this I mind we hypothesize: "The performance of a swimmer is directly influenced by their interaction with waves" We first got our idea of our investigating after observing the waves produced by a swimmer and a boat. The frontal curved waves caused by the forward thrust of the body and the triangular end waves caused partially by the propellant were always visible. We suspected these waves to have an impact on the body and thus decided to investigate. Due to the hypothetical nature of this experiment, no numerical data was collected. The variables that were considered were: Variables Independent variable > Speed of the swimmer Dependant variable > Force acting on swimmer from other waves Controlled variable > The swimmers Apparatus * Camcorder * 2 Swimmers: Shahbaz Mir and Dennis
Why is alcohol considered to be a serious problem? As many 33,000 people in the UK die from alcohol related causes each year- thats ten times as many people that die on the roads
Alcohol Should alcohol be prohibited? Why is alcohol considered to be a serious problem? As many 33,000 people in the UK die from alcohol related causes each year- that's ten times as many people that die on the roads every year. I believe this information should be presented to children at a young age (year five) to reduce the amount of alcohol related illnesses, such as alcoholic liver disease, in young people. By doing so, children will understand from a young age the health implications of excessive consumption of alcohol, and therefore will be able to make more informed decisions in future regarding alcohol consumption. This means that the number of alcohol related deaths the number of cases of alcohol-fuelled anti-social behaviour is likely to decline. This should also be presented to my peers as they are in the age that has a major problem in binge drinking this has increased due to a variety of reasons many of these reasons Contents: What is alcohol? ..................................................................................Pg3 Alcohol through history and its portrayal in the media................. Pg4 Arguments for prohibition of alcohol............................................... Pg6 Arguments Against prohibition of alcohol....................................... Pg9 Why was the Prohibition of Alcohol in America unsuccessful? ....Pg11 Common
Group 4 project
Electricity: Electrostatics: * Not moving charges. * Material like amber, when rubbed, can move small objects * The technical term is that the 'balloon' or likewise, is electrically charged * There are two types of charge: - positive - & negative * if we are looking at atoms, protons are positively charged and electrons are negatively charged * An object that is not charged is referred to as neutral. * A neutron has no charges * In most situations we don't look at atoms, we look at whole objects * If an object has more electrons that usual it will be negatively charged. * If it has less electrons, it will be positively charged. * In most cases we can use friction and rub electrons from one object to another to charge it. * It is important to note: - electrons do the moving, NOT protons - the charge doesn't last long due to interactions with air - it is not restricted to solids * electrostatic precipitation - in chimneys. Smoke and dust are ionized and stick to the metal plates in a chimney * the basic technique of charging small particles is how photocopiers work Charging an object * can be easy or hard depending on the conductivity of the object. * In a conductor electrons can move very easily. E.g. metals have delocalized electrons that move easily. * In an insulator electrons are NOT free. * Things you can CHARGE are insulators. Charging by
ITGS Portfolio Assignment #1 Improvement and use of electric cars, and its affect on the environment Area of Impact: 3.5 Science and Environment
Portfolio Assignment #1 Improvement and use of electric cars, and its affect on the environment Area of Impact: 3.5 Science and Environment October 14, 2010 Word Count: 1000 Presentation of the issue: As technology improves, more electric cars are being used in today's society. Electric cars that recharge off the coal power grid are one type of electric cars that will be used more frequently in the future. Electric cars are supposed to reduce the amount of city pollution by having no emissions of any carbon dioxide or any other harmful particles, but studies have shown that burning coal for electricity can be just as harmful to the environment as using gasoline cars. New electric cars are invented to keep up with the vast increase in technology, resulting in an issue regarding equality of access. The new electric cars that are being manufactured can have a higher price tag, due to the input of the newest technology; therefore not all individuals would be able to afford this type of car. Another issue would be regarding reliability. 1In order to run an electric car, it needs to be charged 10-12 hours to fully charge the vehicle, because of the electric car's large need of time to be charged, efficiency and reliability problems can arise. Users may not be to use the car whenever they want and they may not be able to use it for as long as they want. Also, the
physics lab report group four project
Data Collection Table (1): the voltage between the plates and current flowing through the circuit as the distance between the plates (placed in the 1:1 mountain soil to water suspension) was varied. Trial Voltage (V) (V) (±0.2V) Current (I) (mA) (±0.01mA) Distance between plates (l) (cm) (±0.5cm) Length of plates (L) (cm) (±0.1cm) Width of plates (W) (cm) (±0.1cm) 5.0 0.04 7.0 5.5 3.5 2 5.0 0.07 4.0 5.5 3.5 3 4.2 0.15 .0 5.5 3.5 Table (2): the voltage between the plates and current flowing through the circuit as the distance between the plates (placed in the 1:1 garden soil to water suspension) was varied. Trial Voltage (V) (V) (±0.2V) Current (I) (mA) (±0.01mA) Distance between plates (l) (cm) (±0.5cm) Length of plates (L) (cm) (±0.1cm) Width of plates (W) (cm) (±0.1cm) 5.0 0.05 6.5 4.0 3.5 2 4.4 0.11 2.5 4.0 3.5 3 3.8 0.17 .0 4.0 3.5 Data Processing and Presentation . Conversion of measurements to SI units Table (3): the voltage between the plates and current flowing through the circuit as the distance between the plates (placed in the mountain soil suspension) was varied. Trial Voltage (V) (V) (±0.2V) Current (I) (A) (±0.00001A) Distance between plates (l) (m) (±0.005m) Length of plates (L) (m) (±0.001cm) Width of plates (W) (m) (±0.1m) 5.0 0.00004
Discuss the ways in which the main characters respond to change in at least two of the literary works you read. (Things Fall Apart & Death of A Salesman)
Discuss the ways in which the main characters respond to change in at least two of the literary works you read. The way the main characters of the books 'Death of a Salesman' by Arthur Miller and 'Things Fall Apart' by Chinua Achebe respond to change is extremely similar. 'Death of a Salesman' is set in New York, in the late 1940's. It is about Willy Loman, a salesman in his late 60s, his wife Linda and his two sons Biff and Happy. Willy Loman is a thorough believer of the concept of the American Dream, but he holds on to it so tightly that everything in his life falls apart. He wished so much for his son Biff to be successful, but when Biff finds Willy cheating on his mother, he himself loses all faith and now, in his early thirties, he has no wife or children and jumps from one job to the next. In the end, Willy commits suicide. "Things Fall Apart" is set in present-day Nigeria in the late 19th century, and it is about Okonkwo, who has risen from nothing to a very high position. He is afraid of being like his father, whom he views as weak, and he despises anyone like him, like his son Nwoye. When Christian missionaries arrive in Umuofia, Okonkwo immediately dislikes them, but the gentle 'new faith' immediately attracts susceptible Nwoye, and this causes for Okonkwo to shun his first son. When the white man tries to impose its culture on the Igbo culture and Umuofia does not
Culture Shock
To move from Vietnam to the United States, I have been an exchanged student for almost 2 months. It is not smooth for a 16-year-old girl like me to start a new life in the other hemisphere of the Earth. Through the big differences of lifestyles between two countries, I have gained a lot of precious experiences of independence and adaption. As I realize, the most difficult part of a new adventure to another cultural environment is "Culture Shock"! It is the result of the rapid changes of the familiar life. For my own experiments in the US, I would say that Culture Shock is best expressed by 3 factors: Shock of Changes - Miscommunication - and Homesickness. Firstly, it is important to keep in mind the definition of Culture Shock. When a person moves from one culture to another, he suddenly finds it very strange and irrelevant to live in a new community, which is understandable. The person has to get used to the conditions of eating, sleeping, working, communicating, entertaining...etc. even though he does not clearly know how. It takes him some time to be familiar with a new culture. This explains the disoriented feelings of most people being away from their own customs. For me, there have been a lot of changes in the language, the weather, the food and the people since the day I came to the US. During my first two weeks, I could not sleep before midnight due to the difference
Group 4 Chemistry
Chemistry The chemistry experiment is aimed at testing whether the concentration of salt influences the pH level in the tested water types. The frequency of the opening and closing of the barnacles may be influenced by the salt concentration and the pH level of the water environment in which the barnacles live. Generally, seawater has a pH level of 7.7-8.3 while fresh water has a pH level of 7.0. The high pH level is a result of high concentration of OH ion in a sample. Seawater is a basic solution because the presence of basic salts in the water, such as Sodium Carbonate (Na2CO3) and Potassium Carbonate (K2CO3). Question Is there a correlation between water salinity and its pH level? Hypothesis If it is true that sea water has a higher pH level than fresh water does, then intertidal water will have a higher pH level than stream water does because of intertidal's higher salinity. Independent variable: salinity (g) Dependent variable: pH level Controlled variables: temperature of experiment environment (room temperature), amount of water for each evaporation procedure (5mL), hot plate temperature (550º C), pH meter starts at 7.0 at the beginning of the testing, same amount of water for pH testing (40 mL), ensure all testing water all free of large contaminants by filtering Materials 6 buckets 5 50mL beakers electronic balance hot plate