Science
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4,610 Essays on Science. Documents 4,231 - 4,260
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Tissue Engineering Bone
The State of the Art of Tissue Engineering – Bone Content 1. Introduction………………………………………………….……………………………………………3 2. Bone Grafts and Bone Graft Substitutes…….……………………………………………4 3. Bone Biology……………………………………………………………………………………………..4 4. Tissue engineering…………………………………………………………………………………..5  4.1. Ideal Scaffold  4.2. Growth factors  4.3. Stem cells 5. Future remarks/Conclusion………………………………………………………………………7 6. Appendix…………………………………………………………………………………………………..8 1. Introductions In the U.S. and E.U alone, bone fractures results in more than 2.4 million surgical procedures a year. Currently, bone grafting procedures are used in the healing and the repairing
Rating:Essay Length: 1,202 Words / 5 PagesSubmitted: March 8, 2010 -
Titanium
Name: Titanium Symbol: Ti Atomic Number: 22 Atomic Mass: 47.867 AMU Titanium was discovered in 1791 in the mineral named Menachanite. By the British clergyman William Gregor. He named the element menachite. Four years later, the German chemist Martin Heinrich Klaproth rediscovered the element in the mineral Rutile and named it titanium for the strength of the mythological Greek Titans. The metal was isolated in 1910. It is the 9th most abundant among the elements
Rating:Essay Length: 311 Words / 2 PagesSubmitted: November 14, 2009 -
Titanium
Ryan Graves November 23, 2007 Natural Resource Paper Titanium Found on six of the worlds seven continents and known to be the ninth-most abundant element located in the Earth’s crust is Titanium. Titanium is a metal notorious for its strength, light weight, and high market price. But how do we get this metal? What is it used for? And what are the economical and social issues that surround our highly valuable titanium? There has been
Rating:Essay Length: 1,449 Words / 6 PagesSubmitted: December 3, 2009 -
Titanium
Titanium Titanium is named after the mythological Titans. William Gregor discovered it in 1791, but M. H. Klaproth gave it its present name in 1795. Pure titanium was first made in 1910 by Matthew Hunter, an American metallurgist. It is the ninth most abundant element in the earth’s crust, making up about 0.63% of the crust. It’s also found in the minerals sphene, ilmenite, and rutile. Titanium is just as strong as steel and twice
Rating:Essay Length: 430 Words / 2 PagesSubmitted: December 19, 2009 -
Titration Lab
Chemistry H May 12, 2016 “Concentrate” on Titration The purpose of a titration experiment is to find the concentration of an unknown acid or base. To find the concentration you have to neutralize it with a measured quantity of a case or acid solution whose concentration is known. The known solution is the titrant and the unknown solution is the analyte in titrations. In our experiment we put NaOH in a burette and in a
Rating:Essay Length: 440 Words / 2 PagesSubmitted: July 29, 2016 -
Tivo
March6, 2008 TiVo (TIVO) announced its earnings Wednesday, showing the results of its new, broader focus-- licensing its technology to cable companies, selling interactive TV ads and results of whether those ads are watched, and pushing forward with movie and music downloads. The good news--it narrowed its fourth quarter loss to six cents a share, from 20 cents in the year-ago quarter, and it lost less than analysts expected. The bad news--it ended the year
Rating:Essay Length: 389 Words / 2 PagesSubmitted: April 28, 2011 -
To Apply the Principles of Stoichiometry to a Familiar Reaction and to Review the Use of the Significant Numbers in Calculations
Jada Ramos 4/15/18 P2 Chemistry Lab Purpose: The purpose of this lab is to apply the principles of stoichiometry to a familiar reaction and to review the use of the significant numbers in calculations. Prelab Questions: There are three significant digits in 4.56 g. (1.56 g Zn)(mol / 65.39 g Zn) = 0.0239 mol Zn (0.0378 L)(1.50 m HCl / L) = 0.0567 mol HCl To decant is to pour from one container into another,
Rating:Essay Length: 768 Words / 4 PagesSubmitted: April 22, 2018 -
To Bleed or Not to Bleed
Females, imagine a life of no cramps, bloating, or mood swings, being able to live freely and not having to worry about if it is that time of the month and having to get tampons or pads. Imagine a life where you could swim whenever you want, do as strenuous of activities as you wanted, or even not wear underwear. Fantasy, right? Wrong! With the invention of the new drugs Anya and Seasonale, all
Rating:Essay Length: 1,411 Words / 6 PagesSubmitted: February 22, 2010 -
To Clone or Not to Clone
To Clone or not to Clone Since March 1997, the birth of a cloned sheep named Dolly, has caused a great sensation around the world. Though it was not the first time that the experiment using cloning succeeded, the reason why Dolly shocked the world was that she was the first clone from a cell of an adult mammal, something previously thought to be impossible. This meant that the possibility of cloning human beings was
Rating:Essay Length: 654 Words / 3 PagesSubmitted: December 14, 2009 -
To Clone, or Not to Clone?
“To Clone, Or Not To Clone?” Did you ever imagine having a child that is the exact replica of you? Did you ever imagine of having the cure for heart disease or cancer? Well, these fantasies are not far from reach. The way we could reach these fantasies is through a process called cloning. Cloning is the replication of an exact genetic copy of an organism by use of a somatic tissue (or cell) from
Rating:Essay Length: 873 Words / 4 PagesSubmitted: March 23, 2010 -
To Determination the Partition Coefficient of Ethanoic Acid Between Water and Butan-2-Ol
Aim To determination the partition coefficient of ethanoic acid between water and butan-2-ol. Procedure 1. The room temperature was recorded. 2. 15cm3 of the given aqueous ethanoic acid and 15cm3 of butan-2-ol were poured into a 100cm3 separating funnel, using suitable apparatus. The funnel was stoppered and was shook vigorously for 1 to 2 minutes. (The pressure in the funnel was released by occasionally opening the tap.) 3. 10cm3 of each layer was separated approximately.
Rating:Essay Length: 555 Words / 3 PagesSubmitted: May 14, 2011 -
To Inspect and Examine the Characteristics of the Bromelain Enzyme
Vinayak EDIBLE ENZYMES Garry Vinayak Mrs. Muscatello Thursday, December 11th 2014 SBI 3U1 Abstract: Enzymes are a key component when it comes to digestion and are not only found in plants but also in animals and humans. Pieces of fresh pineapple and canned pineapple were placed in two different cups of Jell-O mixture. They were then refrigerated and left overnight to solidify. The Jell-O with the canned pineapple solidified but the cup with the fresh
Rating:Essay Length: 1,243 Words / 5 PagesSubmitted: May 26, 2016 -
To Investigate How the Resistance of a Wire Is Affected by the Length of the Wire
GCSE Physics Coursework - Resistance of a Wire Coursework Resistance of a Wire Task To investigate how the resistance of a wire is affected by the length of the wire. Theory What is resistance? Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. it has less resistance. For example, gold has
Rating:Essay Length: 1,495 Words / 6 PagesSubmitted: November 29, 2009 -
To Investigate the Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid
Aim: To investigate the rate of reaction between Calcium Carbonate and Hydrochloric Acid. Just from looking at the aim of the investigation I already know that a salt would be formed because a carbonate with an acid forms a salt. In this investigation the substance that is formed is Calcium Chloride, Water and Carbon Dioxide. The symbol equation for this is: CaCo3  Ca2+ + Co32- Hcl  H+ + Cl- Add these all together
Rating:Essay Length: 603 Words / 3 PagesSubmitted: February 3, 2010 -
To Kill a Mocking Bird
To Kill A Mocking Bird To Kill a Mocking Bird is based in about 1935, right in the middle of the depression. It is set in a small town in Alabama called Maycomb. Maycomb, like most small southern towns, has a problem with widespread racism toward Negroes. The novel focuses on one family, the Finches. In the family there are three people, Scout, Jem and Atticus. Atticus is a lawyer and is defending a Negro
Rating:Essay Length: 1,200 Words / 5 PagesSubmitted: January 27, 2010 -
To Supplement or Not?
I have often thought about popping an herbal supplement, whether it is for weight loss or just trying to fight a cold. Instead of choosing one certain supplement to investigate I am doing a broader investigation on herbal supplements in their selves. I will be explaining if herbal supplements are safe, how to read the packaging and choosing the correct herbal supplement for your body. First of all dietary supplements are not for everyone. People
Rating:Essay Length: 1,116 Words / 5 PagesSubmitted: May 11, 2010 -
Tobacco Vs. Tobacco-Free
Running Head: WHEN ADDICTION BEGINS Tobacco Smoke vs. Tobacco-free Smoke: When Addiction Begins Joanna C. Kaufmann Florida State University Abstract Water pipe smoking is very popular overseas, and is rapidly becoming a fad here in western culture. Very little research has been done on the topic of water pipe smoking and its affects on humans. A random sample of 30 people, males and females from all different kinds of cultural backgrounds, was taken in Tallahassee,
Rating:Essay Length: 353 Words / 2 PagesSubmitted: December 13, 2009 -
Toluene
TOLUENE Hazards Identification Emergency Overview -------------------------- POISON! DANGER! HARMFUL OR FATAL IF SWALLOWED. HARMFUL IF INHALED OR ABSORBED THROUGH SKIN. VAPOR HARMFUL. FLAMMABLE LIQUID AND VAPOR. MAY AFFECT LIVER, KIDNEYS, BLOOD SYSTEM, OR CENTRAL NERVOUS SYSTEM. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT. SAF-T-DATA(tm) Ratings (Provided here for your convenience) ----------------------------------------------------------------------------------------------------------- Health Rating: 2 - Moderate (Life) Flammability Rating: 3 - Severe (Flammable) Reactivity Rating: 1 - Slight Contact Rating: 3 - Severe (Life)
Rating:Essay Length: 778 Words / 4 PagesSubmitted: February 12, 2010 -
Toluene
TOLUENE Hazards Identification Emergency Overview -------------------------- POISON! DANGER! HARMFUL OR FATAL IF SWALLOWED. HARMFUL IF INHALED OR ABSORBED THROUGH SKIN. VAPOR HARMFUL. FLAMMABLE LIQUID AND VAPOR. MAY AFFECT LIVER, KIDNEYS, BLOOD SYSTEM, OR CENTRAL NERVOUS SYSTEM. CAUSES IRRITATION TO SKIN, EYES AND RESPIRATORY TRACT. SAF-T-DATA(tm) Ratings (Provided here for your convenience) ----------------------------------------------------------------------------------------------------------- Health Rating: 2 - Moderate (Life) Flammability Rating: 3 - Severe (Flammable) Reactivity Rating: 1 - Slight Contact Rating: 3 - Severe (Life)
Rating:Essay Length: 778 Words / 4 PagesSubmitted: March 23, 2010 -
Tommy John Surgery
Baseball players and fans call it Tommy John surgery, after the pitcher who was the first to have the surgery 29 years ago. By any designation, it is one of the major advancements in sports medicine in the last quarter century. Technically it is a ulnar collateral ligament replacements procedure. Pitching overhand is a particularly stressful motion; the strain it puts on a player's joint is commonly injurious. Pitchers such as Kerry Wood, Matt Morris,
Rating:Essay Length: 1,156 Words / 5 PagesSubmitted: April 7, 2010 -
Tornado
Each year about a thousand tornadoes touch down in the US. Only a small percentage actually strike occupied buildings, but every year a number of people are killed or injured. The chances that a tornado will strike a building that you are in are very small, however, and you can greatly reduce the chance of injury by doing a few simple things. One of the most important things you can do to prevent being injured
Rating:Essay Length: 2,054 Words / 9 PagesSubmitted: November 25, 2009 -
Tornadoes
Tornadoes are Earth’s most violent storms. They are very deadly. Tornadoes and the threat of them are a key part of the U.S.A’s spring weather. But tornadoes can occur anytime of the year. The F-scale is the most common scale used when rating a tornado, but they are trying no to use it anymore. Many tornadoes form when warm air meets cold and dry air. There are many things people can do to stay safe
Rating:Essay Length: 380 Words / 2 PagesSubmitted: December 25, 2009 -
Tornadoes
Tornadoes are Earth’s most violent storms. They are very deadly. Tornadoes and the threat of them are a key part of the U.S.A’s spring weather. But tornadoes can occur anytime of the year. The F-scale is the most common scale used when rating a tornado, but they are trying no to use it anymore. Many tornadoes form when warm air meets cold and dry air. There are many things people can do to stay safe
Rating:Essay Length: 380 Words / 2 PagesSubmitted: March 26, 2010 -
Tornados
Tornado A tornado near Seymour, Texas. A tornado near Seymour, Texas. A tornado is defined by the Glossary of Meteorology as "a violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud, and often (but not always) visible as a funnel cloud..."[6] Condensation funnel A tornado is not necessarily visible; however, the intense low pressure caused by the fast wind speeds (see Bernoulli's principle)
Rating:Essay Length: 2,946 Words / 12 PagesSubmitted: January 2, 2010 -
Torsade De Pointes
Objectives The objectives of this case study are to evaluate the cause of death for a female patient that presented to the ER with ventricular tachycardia, of which elevated to ventricular fibrillation and was unsuccessfully resuscitated. Furthermore, what genetic presupposition to development of VT did she have, and how was this augmented by the influence of Seldane ® (active ingredient terfenadine), an over the counter anti-histamine allergy season remedy. Clinical History During spring time of
Rating:Essay Length: 795 Words / 4 PagesSubmitted: February 28, 2010 -
Total Quality Management
Total Quality Management (TQM) is an approach to the art of management that originated in Japanese industry in the 1950’s and has become steadily more popular in the West since the early 1980’s. TQM incorporates the concepts of product quality, process control, quality assurance, and quality improvement. Consequently, it is the control of all transformation processes of an organization to better satisfy customer’s needs in the most economical way. The TQM philosophy of management
Rating:Essay Length: 885 Words / 4 PagesSubmitted: December 18, 2009 -
Tour Response 1 Berkeley Hills & Flatlands
Geog182Tour Response 1June 2015 Geog182: Tour Response 1 The Berkeley hills compared to the Berkeley flatlands Reading urban investments and changes over time. The experience of exploring the Berkeley, the hills flatlands and the downtown 29th May 2015 was exciting and though provoking. The Berkeley hill sort of illustrates how the upper class people in Berkeley lives and the Berkeley flatlands, notably how the middle class lives in the suburbs as well as their friendliness
Rating:Essay Length: 572 Words / 3 PagesSubmitted: March 14, 2017 -
Tourette Syndrome: Symptoms, Causes, and Genetics
Usually, the first symptoms of Tourette Syndrome are facial tics, commonly eye blinking. Other facial tics include nose twitching and grimaces. The next tic to appear will usually be some other minor motor tic such as foot stomping, head jerking, neck stretching, or body twisting and bending. Affected individuals may also have a vocal tic such as clearing their throat, coughing, grunting, sniffing, yelping, barking, or shouting. Few Tourette Syndrome patients also experience coperlalia-the uttering
Rating:Essay Length: 360 Words / 2 PagesSubmitted: April 22, 2010 -
Tourettes
Tics, most commonly present in Tourette’s syndrome, are recurrent intermittent compulsive movements that involve a particular muscle group. Tourette’s syndrome, otherwise known as Gilles de la Tourette, is a neurobiological childhood condition characterized by motor and phonic tics that change over time. These motor and phonic tics wax and wane in severity and usually decrease in frequency and severity by early adulthood (Murray, 1997). The purpose of this paper is to describe tics as characterized
Rating:Essay Length: 1,843 Words / 8 PagesSubmitted: November 8, 2009 -
Tourette’s Syndrome
TOURETTE’S SYNDROME What is Tourette syndrome? “Tourette syndrome (TS) is a neurological disorder characterized by repetitive, stereotyped, involuntary movements and vocalizations called tics. The disorder is named for Dr. Georges Gilles de la Tourette, the pioneering French neurologist who in 1885 first described the condition in an 86-year-old French noblewoman.” (NINDS) “The early symptoms of TS are almost always noticed first in childhood, with the average onset between the ages of 7 and 10 years.
Rating:Essay Length: 454 Words / 2 PagesSubmitted: December 19, 2009