Science
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4,610 Essays on Science. Documents 661 - 690
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Blue Whales
Blue Whales Blue Whales play an important role in the nitrogen and carbon cycle. They are constantly replenishing the world’s oceans with these vital organic materials. The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, this conversion is mostly carried out through biological means. The blue whale tie into this cycle, because they feed on deep-living creatures and excrete urea, which is a colorless compound that is the
Rating:Essay Length: 1,105 Words / 5 PagesSubmitted: February 27, 2018 -
Blur Spot Limitations in Distal Endoscope Sensors
Blur Spot Limitations In Distal Endoscope Sensors Avi Yaron Visionsense Inc, Orangeburg, New York Abstract In years past, the picture quality of electronic video systems was limited by the image sensor. In the present, the resolution of the image sensor can be superior to the resolution of the optical system in imaging systems such as those employed in medical endoscopy. This “excess resolution” is utilized by Visionsense to create stereoscopic vision in surgical endoscopes that
Rating:Essay Length: 2,556 Words / 11 PagesSubmitted: May 5, 2010 -
Bob Is Great
If you want to understand Las Vegas history, you must get to know Moe Dalitz. Consider that no mean feat, as Dalitz died in 1989 and in life was a private man. Dalitz gave few in-depth interviews in his lifetime, but much was written about him. Las Vegas history is filled with characters who lived double lives. The life of Moe Dalitz is perhaps the best example of a gambling man existing in sunshine
Rating:Essay Length: 925 Words / 4 PagesSubmitted: December 26, 2009 -
Bob Tract Forest Management Plan
Forest Management Plan Prepared For: Bob Stobber XXX NE XXXth Street XXXXXXX, FL 369887 Plan Time Frame: 2006-2011 Introduction Property Location: The Bob Tract can be accessed by traveling north from Vero, Florida on State Road 77 for 17.5 miles to County Road 538. Turn left on CR 538. Head west on CR 538 for approximately 9.5 miles to NE xxth Avenue. Head north on NE xxth Avenue for 2.5 miles. The Bob Property lies
Rating:Essay Length: 771 Words / 4 PagesSubmitted: November 22, 2009 -
Bobby Hamilton Dies
Bobby Hamilton, the longtime NASCAR driver who won the 2001 Talladega 500 and was the 2004 Craftsman Truck Series champion, died Sunday of cancer, said Liz Allison, a family friend who co-hosted a radio show with Hamilton. He was 49. Hamilton was at home with his family when he died, said Allison, the widow of former NASCAR star Davey Allison. "The thing I loved about Bobby Sr. so much is that he treated everybody the
Rating:Essay Length: 560 Words / 3 PagesSubmitted: April 16, 2010 -
Bohr and the Periodic Table
Bohr's Model There are three main parts of an atom the electrons, protons and the neutrons. Each part has charge. It is rather positive, negative, or neutral. An electron always has a negative charge. Protons always have negative charges. Then finally the neutron is a neutral charge or a charge of zero. If the charge of the whole atom it zero that means there are an equal number of positive and negative pieces. An electron
Rating:Essay Length: 468 Words / 2 PagesSubmitted: December 20, 2009 -
Bonding Chem 20
Ionic Bonding 1. Write Lewis symbols for the following atoms. Label bonding electrons and lone pairs of electrons. Label each element as metal or non-metal 1. silicon b. rubidium c. barium d. tin e. iodine f. arsenic 1. Complete the following table. # of valence electrons Lewis Symbol Lewis Symbol for the ion Type of ion Se K Ca Ga Br N 1. Use Lewis symbols to represent the formation of the ionic compound formed
Rating:Essay Length: 2,241 Words / 9 PagesSubmitted: May 9, 2016 -
Bonding: General Concepts
Chapter 8 Notes - Bonding: General Concepts Types of Chemical Bonds * Ionic Bonding * electrons are transferred * Metals react with nonmetals * Ions paired have lower energy (greater stability) than separated ions * Coulomb's Law * E = 2.31x10-19 J x nm (Q1Q2/r) * E = energy in joules * Q1 and Q2 are numerical ion charges * r = distance between ion center in nanometers * negative sign indicates an attractive force
Rating:Essay Length: 2,126 Words / 9 PagesSubmitted: January 19, 2015 -
Bone Structure
As a young man, I have had many collisions in life. Whether it was from sports or from an auto accident, I have been very lucky to not receive any broken bones. When I was in a serious automobile accident last year and walked away unharmed, I wondered how my body was able to withstand all that force, while my car was half its size. I learned that the bone is a very strong material
Rating:Essay Length: 314 Words / 2 PagesSubmitted: March 7, 2010 -
Bonobo Taxonomy
Studying the bonobo has given researchers much insight into our closest living relative. Unfortunately, according to a number of different journal articles, the bonobo is on the verge of extinction. However, in order to understand the conservation issues associated with the bonobo, we must first be able to classify the animal with respect to its families and groups. The bonobo is classified according to the taxonomic hierarchy. Bonobos belong to the superfamily Hominoidea that includes
Rating:Essay Length: 579 Words / 3 PagesSubmitted: March 26, 2010 -
Botulism - a Case Study
Every year, about 110 cases of botulism are reported in the United States. About 25% of the cases result from food, while 72% are infant botulism and 3% are wound botulism. Food-borne botulism is usually caused by eating home-canned foods that are contaminated with the toxin botulin. Botulin is produced by Clostridium botulinum, which is the name of a group of bacteria commonly found in soil. The bacteria grow best in low-oxygen conditions. The
Rating:Essay Length: 543 Words / 3 PagesSubmitted: January 4, 2010 -
Botulism an Illness Caused by Clostridium Botulinum Bacteria
Botulism Botulism is an illness caused by a toxin produced by Clostridium botulinum bacteria. The bacteria that causes botulism can be naturally present in the environment, usually within the soil. Surprisingly, the bacteria alone do not cause botulism, the bacteria produce spores, this provides a special cover for the bacteria. The spores are what can grow and produce the toxin that causes botulism. Conditions that help spores grow and make toxins are low-oxygen, low acid,
Rating:Essay Length: 694 Words / 3 PagesSubmitted: September 17, 2018 -
Bouncy Ball Experiment
Bouncy Ball Experiment Aim: The aim of this experiment is to investigate the efficiency of a bouncing ball, and the factors which affect its efficiency. Prediction I predict that the higher I drop the ball from the higher it will rebound up, because it will have more gravitational potential energy the higher dropped from. As it is dropped the ball will have kinetic energy, and then when it hits the ground changes to heat and
Rating:Essay Length: 975 Words / 4 PagesSubmitted: December 25, 2009 -
Bovine Somatotropin Term Paper
Introduction Each year farmers raise up to 36 million beef cattle. But did you know that farmers fatten up to 2/3rd of these cows with hormones (sciencenews.org). Our group did not, but when we heard this we knew that it would be an interesting and controversial topic to research further. None of us ever thought that when we were buying meat from the grocery store that it would be anything more than just meat. And
Rating:Essay Length: 2,745 Words / 11 PagesSubmitted: December 1, 2009 -
Boyles Law
Purpose and Method: The purpose of this experiment was to understand Boyle’s Law. In the experiment the pressure in the system under constant temperature and mass was used to confirm if the laws are true. Boyles law relates pressure and volume while all other factors are consistent and states: for a fixed amount of gas kept at constant temp, the product of the pressure of the gas and its volume will remain constant if either
Rating:Essay Length: 446 Words / 2 PagesSubmitted: February 22, 2010 -
Boyles Law Apparatus
Abstract The objective of this lab was to determine the relationship (if any), between the pressure and volume of a gas given the temperature and # of molecules remained constant. Using the Boyle’s law apparatus, and textbooks to demonstrate pressure it was concluded that there was a relationship between pressure and volume. However, the relationship was not a direct relationship, and it was determined that the pressure and volume of a gas are inversely proportioned.
Rating:Essay Length: 696 Words / 3 PagesSubmitted: November 9, 2009 -
Brain Cancer
Brain Cancer The brain is made up of millions upon millions of cells. These cells are formed from before birth, up until about 7 years old. Once these brain cells stop dividing, they are never meant to divide again. You can see that the division of brain cells is under strict regulation and control. When this control is lost in a single cell, then it starts dividing in an uncontrolled manner. All of the data
Rating:Essay Length: 998 Words / 4 PagesSubmitted: March 25, 2010 -
Brain Cancer Innovation: Attacking the Core
In the article Brain Cancer Innovation: Attacking the Core, Anne Denogeantries to clarify how deadly glioma (malignant tumor of the neurological cells) actually is, and how a balloon filled with radiation can extend a patients life. Anne goes on to explain that this treatment is not a cure but on average it doesgive the patient additional months if he or she did not take the surgery. This procedure is done to treat some of
Rating:Essay Length: 375 Words / 2 PagesSubmitted: January 18, 2010 -
Brain Functioning (by David F. Salisbury)
Different parts of the brain handle fantasy and reality By David F. Salisbury March 28, 2002 The ability to recognize objects in the real world is handled by different parts of the brain than those that allow us to imagine what the world is like. That is the result of a brain mapping experiment published in the March 28 issue of the journal Neuron. The study focused on two cognitive tasks widely used by experimental
Rating:Essay Length: 773 Words / 4 PagesSubmitted: April 28, 2011 -
Brain Implants Physically Challenged
Traion Ms. Brown CMIN 201-202 February 28, 2007 Brain Implants Physically Challenged The ever-increasing presence of computers in everyone’s lives has generated an awareness of the need to address computing requirements for those who have or may develop physical limitations. The Americans with Disabilities Act (ADA) requires any company with 15 or more employees to make reasonable attempts to accommodate the needs of physically challenged workers (Grube 98). The phrase, “Monkey see, monkey do” may
Rating:Essay Length: 347 Words / 2 PagesSubmitted: March 17, 2010 -
Brain Structures and Their Functions
Brain Structures and their Functions • Cerebrum • Cerebellum • Limbic System • Brain Stem The nervous system is your body's decision and communication center. The central nervous system (CNS) is made of the brain and the spinal cord and the peripheral nervous system (PNS) is made of nerves. Together they control every part of your daily life, from breathing and blinking to helping you memorize facts for a test. Nerves reach from your brain
Rating:Essay Length: 853 Words / 4 PagesSubmitted: February 10, 2010 -
Branches of Chemistry
Atmospheric chemistry is a branch of atmospheric science in which the chemistry of the Earth's atmosphere and that of other planets is studied. Environmental chemistry is the scientific study of the chemical and biochemical phenomena that occur in natural places. It can be defined as the study of the sources, reactions, transport, effects, and fates of chemical species in the air, soil, and water environments; and the effect of human activity on these. Environmental chemistry
Rating:Essay Length: 2,502 Words / 11 PagesSubmitted: January 14, 2010 -
Brass Alloy
Finding the percentage of copper in a Brass alloy Aim: Brass is an alloy of copper and zinc. This alloy has many uses ranging from coinage to non- ferrous fittings on ships. Many domestic taps use brass where contact with water occurs. I have been provided with a sample of brass which is bout 150 years old and I have been asked to quantitatively analyse it, using colorimetry, to find the percentage of copper
Rating:Essay Length: 752 Words / 4 PagesSubmitted: April 16, 2010 -
Brave New World
Novel Analysis: Brave New World Life is not always easy, and humans are not always supposed to be happy. Sometimes everyone wishes that everything could just be uniform and simple, but Aldous Huxley shows that this can be devastating to a society. His novel, Brave New World opens in the Central London Hatching and Conditioning Centre. In the book there are two clashing worlds, the World State and the Reservation. Along with the plot
Rating:Essay Length: 287 Words / 2 PagesSubmitted: January 11, 2010 -
Breakthroughs in Solar Power Technologies
Throughout history, mankind has been using the natural energy of the sun, known as solar energy to meet his energy needs. Solar power involves using these emissions of heat and light by the sun to produce electrical or thermal energy. The sun, the most inexhaustible, renewable source of energy known, reaches the Earth's surface to provide 10,000 times more energy than we consume. Numerous devices for collecting solar energy and converting it into electricity have
Rating:Essay Length: 926 Words / 4 PagesSubmitted: January 4, 2010 -
Breast Cancer
Word Count: 2,402 The aim of the study will be to investigate the functions and roles of “Id-1” and “Id-3” proteins, and to see if their overexpression is responsible for human breast cancer (Jang et al. 2006). Id-1 and Id-3 are part of the Id protein family, which contains all of Id-1, Id-2, I-d 3 and Id-4. Id an inhibitor of DNA binding and differentiation in human cells. (Jang et al. 2006) Id protein
Rating:Essay Length: 2,113 Words / 9 PagesSubmitted: November 17, 2009 -
Breast Implants
Breast Implants In the early 1980’s breast implants began gaining popularity, but they have been on the market since the early 1960’s. They were invented by plastic surgeons Cronin and Gerow. Dow Corning began manufacturing them commercially in 1962. Today over two million women have undergone breast augmentation surgery. There are many negative consequences that may arise from the surgery, and there is always the risk of infection or rupture. When beginning my research on
Rating:Essay Length: 2,147 Words / 9 PagesSubmitted: March 11, 2010 -
Breast-Feeding...Just Do It
Breast-feeding...Just Do It Who is to say that breast-feeding is the best for your baby. For years, breast-feeding tactics have been used as the best way to feed your infant. There was never any debate as to how you should feed your child, until a few years ago when artificial baby formulas were made. Now, researches have set out to figure out which way is the best for your baby. Studies upon studies have been
Rating:Essay Length: 1,255 Words / 6 PagesSubmitted: January 3, 2010 -
Breastfeeding
CHAPTER I I. INTRODUCTION Every year over four million women have babies. Every one of these new mothers must make an important decision for herself and her baby: to breastfeed or to bottle feed? One might assume intuitively that the matter is something calling for personal reflection, that it's an intimate decision, not open to public comment. But that's far from the case-ask any new mother! Breast-versus-bottle is not just the subject of discreet debate;
Rating:Essay Length: 959 Words / 4 PagesSubmitted: December 12, 2009 -
Brellium
Be Protons = 4 Electrons = 4 Atomic # = 4 Neutrons = 5 Atomic mass = 9 Valance Electrons = 2 · Beryllium has one of the highest melting points of the light metals. · Beryllium is a steel grey, strong, light-weight and brittle, alkaline earth metal. · Beryllium and its salts are toxic substance
Rating:Essay Length: 501 Words / 3 PagesSubmitted: December 16, 2009