Science
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4,610 Essays on Science. Documents 3,301 - 3,330
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Reaction of Metals Lab
I. Title: Reaction of Metals II. Problem: The purpose of the experiment was to determine if and how different metals react to different solutions. III. Hypothesis: IV. Materials: Dropper, Beakers, wax pencil, Goggles, eight test tubes, a rack for the tubes, three strips of Zinc, two strips of Copper, three strips of Magnesium, steel wool, Lead nitrate, Silver nitrate, Copper sulfate, Magnesium chloride, Zinc chloride, Sodium chloride, and Potassium. V. Procedure: In tube 1 add
Rating:Essay Length: 250 Words / 1 PagesSubmitted: January 28, 2010 -
Reaction Rates of Barley Alpha Amylase with Starch at Specific Ph’s and Temperatures
Reaction Rates of Barley Alpha Amylase with Starch at Specific pH’s and Temperatures Page 1 Abstract Enzyme’s are used as catalysts in certain reactions. They help lower the activation energy needed for the reaction to go to completion. At optimum temperature and pH the amount of collisions of substrate and enzyme is at its highest, any deviation from the optimum temperature and pH will result in the denaturization of the enzyme. The purpose of
Rating:Essay Length: 1,858 Words / 8 PagesSubmitted: May 10, 2010 -
Reactions Set the World on Its Course
What do we know about our world? What do we care to figure out? Do we want to just drift along life accepting our world how it is, or is it our duty to make an attempt to understand our surroundings. I pick the latter; I believe that our view of the world will never be complete. There will always be scientific inquiry that should be answered. In order to begin laying a “foundation of
Rating:Essay Length: 602 Words / 3 PagesSubmitted: February 16, 2010 -
Reason for Pause
Reason For Pause One night while watching television he first noticed it. His hand was trembling. He didn’t think too much about it. He hadn’t been ill. Other than the usual slowing down a bit for any man of seventy-four he was generally good health. Gradually; however, over the next few weeks, both hands had started a shaking he couldn’t control. Also, he wasn’t sleeping as well, and felt stiff and awkward in all
Rating:Essay Length: 1,243 Words / 5 PagesSubmitted: March 3, 2010 -
Reasons for the Cold War
The Cold War With the aim of preventing East Germans from seeking asylum in the West, the East German government in 1961 began constructing a system of concrete and barbed-wire barriers between East and West Berlin. This Berlin Wall endured for nearly thirty years, a symbol not only of the division of Germany but of the larger conflict between the Communist and non-Communist worlds. The Wall ceased to be a barrier when East Germany ended
Rating:Essay Length: 1,264 Words / 6 PagesSubmitted: November 22, 2009 -
Recent Advances in Science and Technology Have Widened the Gap Between the Haves and the Have Nots.” Do You Agree?
“Recent advances in science and technology have widened the gap between the haves and the have nots.” Do you agree? When Malthus formulated his Malthusian theory; one that predicted the end of the world in the Year 2000, he failed to take into account the single most influential factor on the human race in the last century: technology. Indeed, science and technology have touched the lives of almost every human being and altered their fates.
Rating:Essay Length: 1,169 Words / 5 PagesSubmitted: February 25, 2010 -
Recent Developments in Research on the Genetics of Human Sexual Orientation
Recent Developments in Research on the Genetics of Human Sexual Orientation Human sexual orientation has been a controversy with a high tendency for debate. Lesbians, gays, supporters, and their friends are in a heated dispute about the origins of sexual orientation. There are many possibilities, spanning from personal lifestyle choices, environmental factors, to genetic heredity. In the past few years it has become increasingly popular to examine homosexuals, in hopes of determining the basis
Rating:Essay Length: 1,410 Words / 6 PagesSubmitted: November 22, 2009 -
Reclaiming Clean Energy from Wastewater
Reclaiming Clean Energy from Wastewater As the Earth becomes more developed many changes in the environment are becoming apparent. These changes are unexpected and often faced with opposition from skeptics. One of these problems is global warming. Global warming is caused by the release of greenhouse gases into the atmosphere. Greenhouse gases are produced on a large scale by combustion of fossil fuels. A major contributor to greenhouse emissions is the combustion of coal, oil,
Rating:Essay Length: 1,080 Words / 5 PagesSubmitted: May 19, 2010 -
Recognizing Faces
Recognizing Faces 1309 Sumin Chun (Title page)I stare at myself in the mirror, marveling at my beauty. Then, I take a selfie of the amazing moment. However, I find it weird in photo. I cry in despair. Some of you may have gone through the same experience. Have you ever wondered why faces are so different? How come people recognize us, as us? How come we recognize us, as us? I have wondered, and I
Rating:Essay Length: 687 Words / 3 PagesSubmitted: June 14, 2015 -
Recombinant Bovine Growth Hormone
Recombinant Bovine Growth hormone Bovine Somatotropin is a naturally produced hormone by cows that aids them in milk production in made in their pituitary glands. This naturally occurring hormone can be chemically reproduced in a lab through the use of Recombinant DNA technology. Monasanto corporation produces this product known as Recombinant Bovine Growth Hormone under the name Posilic, for retail to dairy farmers who use it to increase the production of milk in dairy cows.
Rating:Essay Length: 2,021 Words / 9 PagesSubmitted: January 28, 2010 -
Recycle
Delivered on the steps at the Lincoln Memorial in Washington D.C. on August 28, 1963. Source: Martin Luther King, Jr: The Peaceful Warrior, Pocket Books, NY 1968 Five score years ago, a great American, in whose symbolic shadow we stand signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves who had been seared in the flames of withering injustice. It came as a joyous
Rating:Essay Length: 1,578 Words / 7 PagesSubmitted: January 13, 2010 -
Recycling
Recycling Recycling is the processing of materials into new products. There are many products that can be recycled but the most common ones in Puerto Rico are glass, paper, plastic, and aluminum. Recycling prevent the waste of useful materials and reduces energy usage. In Puerto Rico this recycling will be a solution to the landfill problems. There are two kinds of household recycling. When the consumers leave recyclable materials in front of their property to
Rating:Essay Length: 343 Words / 2 PagesSubmitted: December 19, 2009 -
Recycling
In the United Sates, where the population is inflated every year. The amount of space for landfills decreases every day. The need for recycling should not be asked, it should just be done out of habit. Everyone in America needs to recycle, to help the lamdfill problem, help the environment, and help produce new products from recycled goods. In America there is about two-hundred and eight tons of residential and commercial trash generated a year,
Rating:Essay Length: 1,126 Words / 5 PagesSubmitted: January 8, 2010 -
Recycling
The world would be a better place if everyone would recycle.Recycling is one of the most misunderstood yet extremely important issues in our world today. Recycling is simply returning materials to their raw material components and then using these again to supplement or replace new materials in the manufacture of a new product. It is important for every person to take responsibility for his or her own contribution to the recycling effort. Recycling is known
Rating:Essay Length: 1,941 Words / 8 PagesSubmitted: February 12, 2010 -
Redox Reactions of Iron
Iron is one of the world’s cheapest, most useful and most commonly produced metals there is today. As well as being hard and durable its uses are quite extensive. These uses range from being made into paper clips to cars. They also make up machines which help produce our homes clothing and food. Iron can refer to both the element as well as an alloy which is a mixture of iron and other metallic elements.
Rating:Essay Length: 777 Words / 4 PagesSubmitted: December 6, 2009 -
Reduce, Recylce, Reuse
Reduce, Reuse, Recycle! When I think of green homes, I think of a home containing an indoor greenhouse for growing plants. But that is not necessarily true. Green homes are environmentally responsible homes. The U. S. Green Building Council (USGBC) has created a program called Leadership in Energy and Environmental Design, in an effort to move the homebuilding industry toward sustainable practices. Homebuilders can earn points by reducing construction waste, installing energy efficient lighting, and
Rating:Essay Length: 500 Words / 2 PagesSubmitted: December 1, 2009 -
Reflections in Nursing
Running Head: SANTOS A Reflection Paper on Various Nursing Roles NU420 Trends in Nursing College of Nursing and Health Sciences A Reflection Paper on Various Nursing Roles Introduction As an individual reaches the stage where they come to a decision about what they want to be in life, they must look deep inside themselves. They have to reflect on what is important to them and what makes them happy. In addition, one must take into
Rating:Essay Length: 2,336 Words / 10 PagesSubmitted: December 15, 2009 -
Reforest the Caribbean
Choosing to sponsor a community based reforestation project on a large Caribbean Island would yield the most satisfying returns in terms of biodiversity, sustainability, and the goals of the project. Allowing the community to become involved in the project will make them feel invested in their environment and will help produce an environmentally healthy awareness amongst the islanders. Though restoring a lake habitat in New York has its merits, the Caribbean project will be a
Rating:Essay Length: 502 Words / 3 PagesSubmitted: December 25, 2009 -
Regional Government of Switzerland (in Dutch)
Het regionale bestuur van Zwitserland Zwitserland wordt bestuurd door middel van een federaal stelsel. Er is een centrale regering en er zijn 26 kantons, deelstaten van de federatie, met veel autonomie. In dit hoofdstuk zal kort iets over de geschiedenis van de kantons worden verteld, en daarna zal worden ingegaan op de huidige werking van de kantons. 1.1 Ontwikkeling van het regionale bestuur In 1291 sloten de drie kleine staatjes Unterwalden, Uri en Schwyz het
Rating:Essay Length: 898 Words / 4 PagesSubmitted: May 2, 2010 -
Registered Nursing
Registered Nurses The career of my choice is Registered Nursing (RNs). To obtain this career I have to have a high school diploma to enter medical school. There are many certificates available for this profession, but the one I choose is the Bachelor of Science degree. After graduation I will have to take a test to be officially licensed in the state of California. There is more than one way to become a nurse. There
Rating:Essay Length: 814 Words / 4 PagesSubmitted: May 23, 2010 -
Regulation in Eukaryotic Cells
Gene expression is the ability of a gene to produce a biologically active protein. This process is regulated by the cells of an organism, it is very important to the survival of organisms at all levels. This is much more complex in eukaryotes than in prokaryotes. A major difference is the presence in eukaryotes of a nuclear membrane, which prevents the simultaneous transcription and translation that occurs in prokaryotes. Initiation of protein transcription is started
Rating:Essay Length: 757 Words / 4 PagesSubmitted: December 22, 2009 -
Relationship Between Velocities, Distances and Times.
The relationship between an object's position and time if it travels in a straight line at a constant speed, as well as the relationship between the same object's speed and time, will both result in a linear model. This hypothesis will be tested by using a model car, a spark timer, and timer tape. Procedure 1.Obtain a model car, spark timer, half a meter of timer tape. 2.Tape the length of timer tape to
Rating:Essay Length: 434 Words / 2 PagesSubmitted: April 11, 2010 -
Religion
Religion Religion plays a great role in the community. There are over 100 churches. Denominations represented: • Main religious grouping is the Evangelical Protestant, which represents about 19,646 people. The Southern Baptist Church and the United Methodist Church, part of the Evangelical Protestant, boost large memberships. • Catholic and Orthodox religions are among the lowest • Other denominations present include the Assembly of God, the Church of God of Prophecy, the Church of Nazarene, and
Rating:Essay Length: 554 Words / 3 PagesSubmitted: June 12, 2010 -
Remarks About Web-Assisted Career Guiidance Systems
Career selection concerns everybody and it is so an important ,progressive process that it appears to be cyclical: it is repeated whenever an individual needs or chooses to make a new career choice or plan. . Though the level of detail and awareness of the process vary substantially from an adolescent making the first career choice to a middle-aged or older adult making a complex career transition, the basic elements of the process are the
Rating:Essay Length: 353 Words / 2 PagesSubmitted: January 7, 2010 -
Renal Test
Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) The conducting passageways of the respiratory system include all of the following structures EXCEPT: B) alveoli 2) Hypoventilation dramatically increases carbonic acid concentration and involves: 2) _______ A) irregular breathing B) extremely fast breathing C) extremely deep breathing D) extremely slow breathing E) intermittent breathing 3) Which one of the following is NOT true of inspiration: 3)
Rating:Essay Length: 2,925 Words / 12 PagesSubmitted: February 2, 2010 -
Replacing Animal Testing: Unrealistic
Replacing Animal Testing: Unrealistic The issue of whether or not animal experimentation should be used for research in medicine and science has been debated for years. After conducting research on both sides of the issue, I have found that we should not replace animal testing with alternative methods at the present time. The proposal to replace animal testing in medical science is somewhat unrealistic and would prove to be disadvantageous. There are four substantial reasons
Rating:Essay Length: 842 Words / 4 PagesSubmitted: November 17, 2009 -
Report About Fundamental Elektronic
ACARA VI RANGKAIAN INTEGRATOR 1. PELAKSANAAN PRAKTIKUM 1. Tujuan Praktikum 1. Menyusun rangkaian Op-Amp sebagai rangkaian integrator dan memahami karakteristik pengoperasiannya. 2. Mempelajari hasil proses integrasi pada keluaran dengan memberi masukan gelombang kotak, segitiga dan sinusoidal. 1. Waktu Praktikum Jum’at, 15 April 2016 1. Tempat Praktikum Laboratorium Fisika Dasar, Lantai II, Fakultas matematika dan Ilmu Pengetahuan Alam, Universitas Mataram. 1. ALAT DAN BAHAN PRAKTIKUM 1. Alat-alat Praktikum 1. Breadboard 2. Function generator 3. Kabel alligator-alligator
Rating:Essay Length: 1,956 Words / 8 PagesSubmitted: November 7, 2016 -
Report About Real Time Systems’ Conferece
Report about real time systems. Conference by Franзois Dubuc. Introduction. If we think about the ISS (International Space Station), we can see that it’s a complex system. If we see a specific system, the navigation system, we can see how the altitude is regulated depending on the actual altitude, so the altude must be always between 300 km. and 400 km. If the altitude is not between these values, then the propulsion system is activated.
Rating:Essay Length: 1,438 Words / 6 PagesSubmitted: November 22, 2009 -
Report of Sta2
I. Scenario In recent years, along with an increasing demand in human resources, a growing number of universities have plan to open new faculties as well as increase the number of student admissions for these hot sectors. However, it is undeniable that the mismatch between the number of students' enrollment and teachers/lecturers' quantity has large effect on the quality of education and training. To be aware of this important issue, our group decided to find
Rating:Essay Length: 1,944 Words / 8 PagesSubmitted: May 15, 2011 -
Report on Blood
The term artificial blood is somewhat misleading. There is no one product that is being designed to replace the function of human blood. There are two main categories; which consist of volume expanders, which only increase blood volume, and oxygen therapeutics, which substitute for the bloods natural ability to carry oxygen. We need blood substitutes due to increasing demands. According to the American Red Cross blood donation is increasing 2-3% annually in the United States,
Rating:Essay Length: 610 Words / 3 PagesSubmitted: December 25, 2009