Idioteex

Posts Tagged ‘Testing’

Do we really need to have animal testing?
Is it really necessary that we have animal testing to make our lives better? When do we say no? Is there a difference between testing on mice and testing on dogs or monkey’s? Can’t we live happily without these tests?
Is it Ever Acceptable?
Animal testing is always a touchy subject. I generally find myself on the wrong end of both sides of the argument as I disagree with animal testing on what I consider non-vital experiments like make-up products and cosmetic medicines (medicines for symptoms that are not critical or dangerous). But when it comes to life saving drugs, I believe they must be tested before being introduced into the open market. The thought of an AIDS cure that has not been tested is a scary prospect, is it could lead to a cure causing unexpected complications and leaving the patient in a worse condition than before the treatment.
The Reason behind Animal Testing
Animal testing is done for the development of effective and safe drugs for mankind. Animal research in fact plays a vital role in virtually every major medical research and development process. The reason behind animal testing stems from the fact that this type of research offers valuable insights into the working of the human systems. Moreover health agencies and medical societies around the world recognize the need for animal testing. Tests are carried out on animals carrying a particular disease as part of the animal testing process. There are also instances when animals are created with certain types of disorders in order to test certain type of drugs too.
Everyone has it’s own life
Life is equal whatever who it is. Dogs, cats, rabbits, horses, sheep, even ants have their own life. As long as they have their consciousness, they should be respected totally, especially the animals who can communicate with human like dogs, monkeys and so on.
However, in the Medical research institutions, someone take animals testing to prove how effective about some new medicine. The mousses and rabbits are often the victims. Who can consider their feelings? All about these is so horrible.
There are many ways to improve the development of medical. Did it must take some innocent life away? Is it fair for them? Why human must so selfish to get the advantage from other lives? We are all members of the nature. Let’s learn to respect the other animals who living with us together on the earth.

Sieving in its most elemental definition is the separation of fine material from coarse material by means of a meshed or perforated surface. The technique was used as far back as the early Egyptian days as a way to size grains. These early sieves were made of woven reeds and grasses. Today the sieve test is the technique used most often for analyzing particle-size distribution.

Although at first look the sieving process appears to be elementary, in practice, there is a science and art involved in producing reliable and consistent results. In order to better understand sieving, there are several areas of sieve specifications that should to be explained, including:

1. What Are Test Sieves?

Test sieves are measuring devices used to determine the size and size distribution of particles in a material sample using wire mesh of different openings to separate particles of different sizes.

Test sieves usually consist of wire mesh held in a frame. In most laboratory applications the frame is round and is made from stainless steel or brass. The standard frame sizes are three, six, eight, ten, or twelve inch diameters and metric equivalents. The woven mesh can be made of stainless steel, brass, or bronze. For most applications stainless steel is the most common material used.

2. What Are the Limitations of the Test Sieve Procedure?

The main limitation with the construction of test sieves is the inherent nature of a woven product including control of sag when mounted and the uniformity of construction of the holding frame. It is also essential to maintain consistent sizing across all the openings in a piece of mesh.

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