Kheng Horng Gan Edwin IS-240.009‚ Disc6 2/23/14 Questions 2 – Evaluate the advantages of the relational database model A relational database model has many advantages such as increase flexibility‚ increase information security‚ increase scalability and performance‚ increase information integrity (quality)‚ and reduce information redundancy. Firstly‚ most of the companies use database because it can handle changes easily and quickly. There are two views used to understand the flexible database
Premium Relational model Database SQL
What is water purification? Water purification generally means freeing water from any kind of impurity it contains‚ such as contaminants or micro organisms. Water purification is not a very one-sided process; the purification process contains many steps. The steps that need to be progressed depend on the kind of impurities that are found in the water. This can differ very much for different types of water. In which ways is polluted water treated? Settling Before the purification process begins some
Premium Water purification
Topic: Tap Water vs. Bottled Water Specific Purpose: To persuade my audience that tap water is as safe as or safer than bottled water Central Idea: With bottled advertise and claim to be from pure sources‚ tap water can have alike or better quality sources of drinking water than bottled water. INTRODUCTION Attention-getter: Bottled water has become the indispensable item in our lives. It starts the day in lunch boxes; it goes to every meeting‚ lecture hall‚ and soccer match; it ’s in the cubicles
Premium Drinking water Water Bottled water
LAB REPORT 5 – ACID/BASE CHEMISTRY No credit will be given for this lab report if the Data section is not completely filled out and if the required photographs are not received. At least one photograph must show the student’s face. NOTE: This experiment is rather lengthy. Plan accordingly. OBJECTIVES 1. Define strong electrolyte‚ weak electrolyte‚ nonelectrolyte‚ acid‚ base‚ salt‚ strong acid‚ weak acid‚ strong base‚ weak base‚ and neutralization reaction. 2. Compare and contrast the chemical
Premium Acid PH Acetic acid
This lab will allows the comparison between elimination reactions under acidic and basic conditions through an analysis of two separate reactions: an acid-catalyzed dehydration of 1-butanol and 2-butanol using sulfuric acid and a dehydrobromination under basic conditions using potassium tert-butoxide of 1-bromobutane and 2-bromobutane. The products of all four reactions will be analyzed with gas chromatography‚ which separates organic compounds to see how each reaction’s product are formed under
Premium Chemistry Chemical reaction Acetic acid
FOOD QUALITY Quality * Relates to excellent product or services that fulfills or exceeds our expectations Food Quality * Includes all attributes that influence product’s value to the consumers. This includes‚ Negative attributes (e.g.spoilage‚ contamination with filth‚ discoloration‚ off odors & flavors; Positive attributes (e.g. origin‚ color‚ flavor‚ texture and processing method used -Food Quality is a term which may refer to several things: ♣ the extent to which food contains
Free Food Food safety Food industry
the enzymatic substrate coliform test (Section 9223). Each technique is applicable within the limitations specified and with due consideration of the purpose of the examination. Production of valid results requires strict adherence to quality control procedures. Quality control guidelines are outlined in Section 9020. When multiple tubes are used in the fermentation technique‚ results of the examination of replicate tubes and dilutions are * Approved by Standard Methods Committee‚ A–E‚ 1999; F‚ 2001
Premium Drinking water Escherichia coli Bacteria
Water Pollution – Essay Air and water are two most essential ingredients necessary for the existence of life. Air is unlimited. But there is limitation of fresh water‚ required for the human beings’ consumption. So‚ there is need to conserve water‚ by its judicious use and by protecting it from the pollutants. Our water resources are depleting very fast. We need to take action. It has been predicted that the future wars would be fought due to water problem. All around the world‚ countries
Free Pollution Water Water pollution
Water treatment * Water treatment - describes those industrial-scale processes used to make water more acceptable for a desired end-use. These can include use for drinking water‚ industry‚ medical and many other uses. Such processes may be contrasted with small-scale water sterilization practiced by campers and other people in wilderness areas. The goal of all water treatment process is to remove existing contaminants in the water‚ or reduce the concentration of such contaminants so the water
Premium Sewage treatment Water pollution Water purification
WATER AS OUR NATURAL RESOURSE There are more than 326 million trillion gallons of water on Earth. Less than 3 % of all this water is fresh water and of that amount‚ more than two-thirds is locked up in ice caps and glaciers. With so much water around it seems like there is enough to see us through for millions of years. But did you know that even water‚ which seems to be in abundance‚ might one day become scarce? Each time you throw something as garbage‚ think of where it will finally end up. Whether
Premium Water Water pollution