Science
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4,610 Essays on Science. Documents 811 - 840
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Cervical Cancer
Lots of things inspired me to pursue a career in the field of medicine. One of the issues that motivated me was the research and development of cervical cancer. I, as a woman am very concerned about this cancer spreading amongst us. This subject first concerned me when my aunt in Peru talked about this with me. She is a gynecologist and has told me so much about cervical cancer. I also heard of cervical
Rating:Essay Length: 403 Words / 2 PagesSubmitted: January 4, 2010 -
Cervical Cancer, Hpv and Hpv Vaccine
Cervical Cancer, HPV and HPV Vaccine 1. Some types of HPV are strongly associated with a high risk of developing cervical cancer. Scientists believe that HPV initiates a process that leads, over time, to the development of cervical cancer; and that other factors, such as cigarette smoking, poor nutrition and infection with the sexually transmitted disease Chlamydia, stimulate and lay the groundwork for cervical cancer. 2. Developed countries that have pap smears show a lot
Rating:Essay Length: 540 Words / 3 PagesSubmitted: November 29, 2009 -
Chad and Chile
Chad and Chile Chad, located in central Africa, and Chile which is located on the west coast of South America surprisingly have some geographic similarities. That is not to say that Chad and Chile do not have their differences. Chad and Chile are countries that have climatic zones that range from deserts to fertile farm land and a lot more in between. These countries have industries that range from mining of minerals to raising cotton
Rating:Essay Length: 547 Words / 3 PagesSubmitted: December 16, 2009 -
Chalcopyrite
Chalcopyrite is a sulfide mineral of copper and iron; it is the most common ore mineral of copper. Chalcopyrite has a chemical composition of CuFeS2 and is brassy to golden yellow in colour with an iridescent tarnish. It also yields gold and silver as a by product. Pyrometallurgical extraction This is a process of copper extraction from the chalcopyrite ore into pure metal. Firstly the copper ore is crushed and ground before it is concentrated
Rating:Essay Length: 541 Words / 3 PagesSubmitted: March 28, 2010 -
Challenger
On January 26, 1986, one of the greatest disasters of our time occurred. When Challenger was destroyed many questions were asked about the safety of space missions. Many questions were asked about the credibility of the engineers who designed the air craft. It is now know that crucial information about the faulty O-rings was know to many if not all of the engineers. These engineers had many moral decisions they had to face when the
Rating:Essay Length: 1,088 Words / 5 PagesSubmitted: December 12, 2009 -
Challenger Paper
Introduction Challenger was the second shuttle orbiter to be placed into service after Columbia and was constructed using a body frame that had initially been produced for use as a test article. Its maiden voyage was on April 4, 1983, and made eight subsequent round trips to low earth orbit before it was destroyed during launch for its tenth mission 51-L, on January 28, 1986. It is one of two space shuttles destroyed in an
Rating:Essay Length: 918 Words / 4 PagesSubmitted: December 22, 2009 -
Challenges of Being an Advocate and Neutral Facilitator
Advocacy represents strategies, actions taken and solutions proposed to influence decision-making to create positive change for people and their environment. Advocacy is speaking up for, or acting on behalf of, yourself or another person. The other person is often receiving a service from a statutory or voluntary organization. An advocate is a person who argues for a cause; a supporter or defender who pleads in another's behalf. A mediator is an impartial third party who
Rating:Essay Length: 450 Words / 2 PagesSubmitted: November 22, 2009 -
Changes in Lifestyle
Changes in lifestyle coupled with a lithesome approach towards career have fuelled the consumption of fast food. With the fairer sex becoming extremely nurturing over successful careers, the paucity of time has taken its toll on traditional food eating habits, bringing to fore the advantages of tomato ketchup. The wide palate of ketchup caters to different taste buds with a host of flavors. Spanning from reduced sugar/no salt added options to organic variety, the range
Rating:Essay Length: 296 Words / 2 PagesSubmitted: May 18, 2011 -
Channel Islands
Channel Islands The Channel Islands National Park is filled with animal life. The park has an amazing variety of animals from land to aquatic. The Channel Islands National Park consists of eight islands. Along the coasts of most of these islands, there are mass numbers of seals and sea lions. There are also a large variety of birds. One of the national parks rarest birds is the brown pelican, which mostly reside on the West
Rating:Essay Length: 252 Words / 2 PagesSubmitted: November 10, 2009 -
Chaos Theory
An individual must be both a gifted and exceptional human being in order to make a contribution to the mathematical and scientific world. However, to be considered to bring “about one of the most dramatic changes in mankind’s view of nature since Sir Isaac Newton,” that individual must be of a rare breed of genius (Edward). Meteorologist Edward Lorenz is the recipient of this phenomenal comparison. Throughout his academic career, Lorenz has contributed various ideas
Rating:Essay Length: 1,050 Words / 5 PagesSubmitted: November 23, 2009 -
Chaos Theory
Chaos Theory By Ron Clemens Per 3 English Mr.Ortiz 4/18/2005 What exactly is chaos theory? From the understanding of many scientists such as Edward Lorenz, Ian Stewart, and Robert May the chaos theory relatively means the same thing. Each of these scientists contributed to the science of chaos theory. First and Foremost chaos theory itself comes from the seemingly half-hazard way things seem to happen in its equations, but chaos theory is really about
Rating:Essay Length: 1,504 Words / 7 PagesSubmitted: January 8, 2010 -
Chapter 15 - External Processes
CHAPTER 15 (external processes) What is meant by denudation? The overall effect of the disintegration, wearing away, and removal of rock material. Implies a lowering of continental surfaces. The three stages in denudation are? 1. Weathering is the breaking down of rock into smaller components by atmospheric and biotic agencies. 2. Mass wasting involves the downslope movement of broken rock material due to gravity. 3. Erosion consists of more extensive and generally more distant removal
Rating:Essay Length: 935 Words / 4 PagesSubmitted: December 19, 2009 -
Chapter 15 :external Processes
What is meant by denudation? The overall effect of the disintegration, wearing away, and removal of rock material. Implies a lowering of continental surfaces. The three stages in denudation are? 1. Weathering is the breaking down of rock into smaller components by atmospheric and biotic agencies. 2. Mass wasting involves the downslope movement of broken rock material due to gravity. 3. Erosion consists of more extensive and generally more distant removal of fragmented rock material.
Rating:Essay Length: 927 Words / 4 PagesSubmitted: December 17, 2009 -
Chapter 19 Answers
Seth Meggs 1. It is first wrapped twice around a cluster of protein molecules called histones. This structure, a cluster of histones and two loops of DNA around it, is called a nucleosome. But this packing is not nearly enough to squeeze the tremendous DNA molecule into the nucleus. The nucleosomes are subsequently coiled together, and then this coil is arranged in tightly packed loops. This incredibly dense mass of loops and coils is the
Rating:Essay Length: 306 Words / 2 PagesSubmitted: April 16, 2010 -
Chapter 20 Lease Financing Answers to End-Of-Chapter Questions
Chapter 20 Lease Financing ANSWERS TO END-OF-CHAPTER QUESTIONS 20-1 a. The lessee is the party leasing the property. The party receiving the payments from the lease (that is, the owner of the property) is the lessor. b. An operating lease, sometimes called a service lease, provides for both financing and maintenance. Generally, the operating lease contract is written for a period considerably shorter than the expected life of the leased equipment, and contains a cancellation
Rating:Essay Length: 7,095 Words / 29 PagesSubmitted: April 12, 2012 -
Chapter 5 Review
Chapter 5 Review 5.1 o Early Models of the Atom o Democritus  Greek teacher who lived in the 4th century B.C.  Was the first to suggest the existence of particles, atoms  Believed these structures were indivisible and indestructible.  His ideas were not useful in explaining chemical behavior. • Lacked experimental support o John Dalton  The modern process of discovery regarding atoms began with him.  Was an English school teacher
Rating:Essay Length: 452 Words / 2 PagesSubmitted: December 21, 2009 -
Characteristic Features of Rna
Characteristic features of RNA Messenger, ribosomal, and transfer RNA are the main kinds of RNA in living cells. The cytoplasm contains a further class of RNA, called small cytoplasmic RNA (scRNA), which mainly exists in the form of RNA-protein complexes. Within a special region of the nucleus, called the nucleolus, another class of RNA is found. It is called small nucleolar RNA (SnoRNA) and functions in the manufacture of ribosomal RNA. MESSENGER RNA The
Rating:Essay Length: 415 Words / 2 PagesSubmitted: December 27, 2009 -
Characterists of Life
Characteristics of Life Living Things Are highly organized and contain complex substances Are made up of one of more cells Use energy Have a form and a limited size Have a limited life span Grow Respond to changes in the environment Reproduce Evolve and change over time Life Process Needed to Sustain Life Nutrition Taking the nutrients from the environment (ingestion-heterotrophs) Breakdown of complex foods into simpler ones (digestion) Egestion (elimination Autotrophs (produce own food)
Rating:Essay Length: 407 Words / 2 PagesSubmitted: November 2, 2015 -
Charles Darwin
Charles Darwin was born in Shrewsbury, Shropshire. His father was Robert Waring Darwin and his wife was Susannah, and he was the grandson of scientist Erasmus Darwin. His mother died when he was 8 years old, and his sister brought him up. He was taught at Shrewsbury, then sent to Edinburgh to study medicine, which he disliked very much so. Like many modern students, Darwin was only good in subjects that interested him him. Although
Rating:Essay Length: 959 Words / 4 PagesSubmitted: January 18, 2010 -
Charles Darwin
Asad Charles Darwin Charles Darwin was born on February 12, 1809 in Shrewsbury, England. His mother's name was Susannah Wedgewood. His mother was the daughter to a famous pottery expert named Josiah Wedgwood. His father was a very wealthy physician named Robert Waring Darwin. His Grandfather, Erasmus Darwin was a famous poet, physician, and philosopher. Young Charles was destined to make something of himself the day he was born. In 1818, young Charles began school
Rating:Essay Length: 664 Words / 3 PagesSubmitted: February 7, 2010 -
Charles Darwin
When the name Charles Darwin is uttered, an immediate association brings about the concept of Evolution. Although he was not the first to discover this phenomenon, he was the first to explain it. In his book, The Origin of Species, Darwin discusses evolution- through variation, why it occurs, the struggle for existence, natural selection, the geological record, and several other topics. This book brought him great recognition as well as many violent attacks. It was
Rating:Essay Length: 1,659 Words / 7 PagesSubmitted: May 10, 2010 -
Charles Darwin "natural Selection"
Charles Darwin revolutionized biology when he introduced The Origin of Species by Means of Natural Selection in 1859. Although Wallace had also came upon this revelation shortly before, Darwin had long been in development of this theory. Wallace amicably relinquished the idea to Darwin, allowing him to become the first pioneer of evolution. Darwin was not driven to publish his finding, which he’d been collecting for several years before Wallace struck upon it, because he
Rating:Essay Length: 1,874 Words / 8 PagesSubmitted: January 5, 2010 -
Charting and Analysising Behavior
Positive Behavior Support (HWSS 2107) Assignment. CHARTING AND ANALYSISING BEHAVIOR I will be charting and analysising the challenging behavior of a 22 year old man. For the purpose of this assignment I will be referring to the man as “John”. John has been diagnosed with Autism and lives in supported accommodation with four other Autistic men of a similar age. John has good receptive skills, he communicates mostly through gestures and can verbalize “Ah” for
Rating:Essay Length: 1,771 Words / 8 PagesSubmitted: March 10, 2010 -
Chem
) -DNA, chromosome, gene and genome are all terms that refer to aspects of the inheritance, development and reproduction of organisms. -A gene is a specific sequence of bases that contains instructions for making proteins, and can be located in the DNA of an organism's genome. Compared to "genome,chromosome and DNA," a gene is the most basic physical and functional unit of heredity. -DNA or deoxiribonucleic acid is a chemical that contains genes, and is
Rating:Essay Length: 722 Words / 3 PagesSubmitted: January 14, 2010 -
Chem
Irene Wu Laboratory 5. Acetic Acid Concentration in Vinegar Report The goal of this labortory is to understand volumetric analysis and the quantitative measurement of solution concentrations. The titration of acetic acid in vinegar is performed using a sodium hydroxide solution which has been standarized. The experiments performed are preperation and standarization of sodium hydroxide solution and determination of acetic acid content of vinegar. First, 2.5-2.7 grams of sodium hydroxide was weighed on a top-loading
Rating:Essay Length: 926 Words / 4 PagesSubmitted: December 8, 2014 -
Chemesitry Lab Experiment 30
Chemistry lab 100 Pre lab experiment 30 The objective of this experiment id to identify functional group of organic compounds by performing a chemical tests and to identify an organic compound. The apparatus and chemical going to be used in this experiments are small tests tubes, beakers, string rod medicine dropper, litmus paper, test tube rack, test tube holder, burner and hose m cooking fat, pentene, ethanol, butanol , t-butyl alcohol , sodium , Fehling’s
Rating:Essay Length: 257 Words / 2 PagesSubmitted: April 17, 2018 -
Chemical Anaylses of Iron
Analytical Chemistry II (a) Chemical Analyses – Iron (b) ICP – Inductively Coupled Plasma Material examined - Soil Name of analyte – Iron Sampling Procedures – A representative sample must be collected. The sample must remain dry and contaminant free. At least 50 mg are needed. Sample preparation procedures - The soil sample is extracted with a mechanical vacuum extractor in a 0.2 M acid oxalate solution buffered at pH of 3.0 under darkness. The
Rating:Essay Length: 636 Words / 3 PagesSubmitted: January 18, 2010 -
Chemical and Biological Weapons
Will the human race still be in existence in fifty more years? Although likely, there is a very real possibility that we will not be here. For example, after the Gulf War, we found Saddam Hussein stockpiling Weapons of Mass Destruction. Did you know that he had enough weapons to kill every single human, dog, and cow on the face of the earth? When I found that out, I thought it was very interesting, so
Rating:Essay Length: 4,500 Words / 18 PagesSubmitted: December 6, 2009 -
Chemical Basis of Life
Chapter 4 The Chemical Basis of Life Introduction • Your body is an elaborate chemical system. • Chemical signals between brain less enable your mind to understand what you see. • You nourish those cells with chemicals that are obtained from food. • Life is all about chemicals and how they interact Concept 4.1 Life requires about 25 chemical elements Elements • Humans and other organisms are examples of matter. Matter: Anything that occupies space
Rating:Essay Length: 338 Words / 2 PagesSubmitted: January 29, 2010 -
Chemical Bonding
Chemical reactions involve the making and breaking of bonds. It is essential that we know what bonds are before we can understand any chemical reaction. To understand bonds, we will first describe several of their properties. The bond strength tells us how hard it is to break a bond. Bond lengths give us valuable structural information about the positions of the atomic nuclei. Bond dipoles inform us about the electron distribution around the two bonded
Rating:Essay Length: 489 Words / 2 PagesSubmitted: December 3, 2009