Result for Category Science : 478 papers

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Human Involvement in Hazardous Evolution

1 pages (251 words), Download 1
Seldom do man realise that attempt to eradicate certain species, would trigger more dreadful evolution that put forth highly resistant and stronger variations of that beings. According to Palumbi, one such example was the discovery of DDT a mile stone in revolution against pest that won Paul Muller the 1948 Nobel Prize, but astoundingly, resistant variants of insects that could survive DDT were found even before the Nobel Ceremony took place.

Advances in Molecular Biology and Their Impact on Society

1 pages (251 words), Download 1
Ever since Watson and Crick made a model of the structure of the DNA, major advances in the field of genetics and microbiology in general have developed. These advancements helped scientists and researchers in improving the lives of the general public, from increasing food production to finding new ways to treat deadly diseases.

Qualitative Research Essay

10 pages (2510 words), Download 1
Modern studies in different areas of science are practically impossible without a comprehensive qualitative analysis in many aspects the methods employed are either used wrongly or have little practical effectiveness. As a result, many researchers reject empirical quantitative methods and make hypothesis based on their own vision of the problem that contradicts major principles of science, i.e.: verification of retrieved data.

Biometric identification

1 pages (251 words), Download 0
In the United Kingdom, the House of Commons passed a bill that biometric identification cards are to be made compulsory for every citizen by the year 2010. Biometric identification cards contain embedded chips that store personal information about the citizen like name, signatures, photos, facial scans and iris and retinal scans.

History of Measurment

3 pages (753 words), Download 0
From the cubit, other measures were developed. The smallest unit of ancient measurement was the digit, the width of a finger. Next to the digit was the palm, equal to 4 digits, and the scale continued up to the cubit, equal to 28 digits. For units smaller than a digit, the Egyptians were the first to invent fractions.

Clinical Chemistry

2 pages (502 words), Download 0
The creatinine blood test is done to detect health problems such as kidney damage. it is usually ordered along with a BUN (blood urea nitrogen) test to assess kidney function. Both are frequently ordered as part of either basic or comprehensive metabolic panel (BMP or CMP) groups of tests that are performed to evaluate the function of the body's major organs.

Adult nursing

3 pages (753 words), Download 0
Jane David is a 35-year-old female who presented with the complaint of feeling unwell for 2 to 3 weeks. On questioning, it appeared that her symptoms are vague. She complains of loss of energy and feeling generally unwell. On closer questioning, it was apparent that she has had some dysuria and frequency of micturition.

Antibiotic Sensitivity Testing

6 pages (1506 words), Download 0
Many antibiotics are undergo modifications that changes their inherent characteristics such as reduced toxicity, increases solubility, thus giving them the desirable features that they lack being natural. There are several methods developed to test the susceptibility of microorganism towards antibiotics including the Cup Borer method, Ditch method and the Disc Diffusion method.

Headspace Analysis

3 pages (753 words), Download 0
The procedure involves the extraction of a volume of the equilibrium gas over the sample (usually about 10 ml) by a syringe through a vial containing a bed of an appropriate absorbent. The vial is placed in line with a gas chromatography column, the vial heated and the vaporized sample swept on the column and the components separated.

Single slit diffraction & double slit interference

13 pages (3263 words), Download 0
Interference occur when waves are added together, their sum is determined by the phase and the amplitude of the individual waves. The summed amplitude of the waves can have any value between zero and the sum of the individual amplitudes.

Facing the enigma of Californias Water Crisis

11 pages (2761 words), Download 0
A list of questions is posed to CalFed, an agency responsible for looking out for the Sacramento Delta waters. Based on findings on California Rivers and the Bay-Delta we put together ways to protect the Sacramento Delta limited resources, and improve water management.

Impending Extinction of Steelhead

12 pages (3012 words), Download 0
Currently, we are experiencing a decline of animal and plant population with some of them going extinct. Although extinction is a natural process in the course of evolution, as evidenced by the fate of dinosaurs, the rate at which it is occurring today is far from the rates in the history of the earth.

The Relationship Between Soil Properties and Soil Erodibility

8 pages (2008 words), Download 0
415). The composition of sand, silt and clay in a soil is natural phenomenon and the composition cannot be modified on any large scale by man . Among sandy, loamy and clayey soil loam soil is a ideal textural class .It contains the constituents like sand silt and clay in uniform proportions.

Three Laws in One Life

8 pages (2008 words), Download 0
Best known as the astronomer who explained planetary motion, Johannes Kepler was born at 2:30pm on December 27, 1571, in Weil der Stadt, Wrttemburg, in the Holy Roman Empire of German nationality. His parents were poor - his father worked as a mercenary and his mother, an inn-keeper's daughter, was known for her involvement in witchcraft.

Global Warming Book Report/Review

125 pages (31375 words), Download 0
Climate change is increasingly framed as an issue where the threats are severe, increasingly imminent and potentially catastrophic. If the worst predictions of scientists prove to be accurate, then no one will be able to escape the consequences of climate change.

Pulfrich Effect

8 pages (2008 words), Download 0
Then, the materials were set up in a brightly lit room and were the person who will do the experiment is comfortable with. Then, the pendulum was set up and tucked in the ceiling using some pins and made sure that it can really carry the weight on the other end.

Data Analysis Essay

20 pages (5020 words), Download 0
Age is a continuous variable when it is used with a decimal point. However, when it is used as an integer value it is then considered to be a discrete value. It has a parametric interval level because its values can be ordered and the distance between different values has meaning (Black 2006, p.9).

Climate Change Master Essay

10 pages (2510 words), Download 0
Loss of biodiversity, scarcity in supply of fresh water, ozone depletion and drastic changes in climate has a direct effect on human health. Adding to this, global warming has already affected many lives and poses to endanger many more in the future, if failed to act.

Biological Module

11 pages (2761 words), Download 0
(c) Chloroplasts: The chloroplasts are special pigments that are designed for trapping the sun's energy and converting substrates absorbed from the soil into food for the plant. This feature is absent in the animal cell. In the mitochondria , the prokaryotic cells received organic and inorganic substances from the host and the host increased ATP output increased cellular efficiency.

The Effect of Osmosis on Potato Tissue When Placed In Different Concentrations of Sugar Solutions

2 pages (502 words), Download 0
(Encyclopaedia Britannica :2005 Deluxe Edition .CD-ROM). Place 4 potato slices -each a quarter of an inch in thickness - in 4 water bowls in which 1,2,3 and 4 spoons of sugar have been dissolved respectively. After leaving the bowls undisturbed for a day we notice that the potato slices in the bowls are shrunken and that the potato slice in the beaker containing water with 4 teaspoons of sugar dissolved in it has shrunk the most.

Calcium as Second Messengers

4 pages (1004 words), Download 0
Binding of a ligand to a single receptor at the cell surface may end up causing massive changes in the biochemical activities within the cell (Kimball, 2006). There are three types of second messengers: cyclic nucleotides like cAMP (cyclic adenosine monophosphate); IP3 ( inositol triphosphate) and DAG ( diacylglycerol); and Calcium ions.

Business Research Methods Essay

6 pages (1506 words), Download 0
Business Research Methods are those methods and tools that are used by business executives to predict and comprehend the situation and future outcomes related to a certain decision or judgment. These methods are usually accepted throughout the world and help in making reasonable predictions about the future that a certain decision might lead to or the consequences of a definite assessment.

Research Critique Research Paper

8 pages (2008 words), Download 0
In this paper, we describe the findings of the pilot study, which explored quality of life (QoL) issues in a group of older people with pressure ulcers, and discuss the implications for nursing clinical practice. The implications to the practice of nursing includes further understanding about the impact of pressure ulcers on the lives of older people, revelation about the pain suffered by older people with pressure ulcers and how the use of pressure relieving devices may increase their pain and awareness of the coping mechanisms developed by older patients with pressure ulcers.

More stewardship is needed

2 pages (502 words), Download 0
Let's look at the word "stewardship," defined by the Miriam-Webster dictionary as meaning, "the conducting, supervising, or managing of something; especially: the careful and responsible management of something entrusted to one's care." Stewardship covers a broad spectrum of the core necessities of sustainability.

Carbon Dioxide Emission

7 pages (1757 words), Download 0
A general linear regression model was postulated and evaluated. Carbon dioxide emissions are those stemming from the burning of fossil fuels and the manufacture of cement. They include carbon dioxide produced during consumption of solid, liquid, and gas fuels and gas flaring.
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