Sunday, November 22, 2009

Bilirubin Range In Hepatitis

The sonochemical is a branch of science (specifically a branch of chemistry . was discovered by Alfred Loomis in
1927. At first he was not given its due importance, until in the late 1980

generators were first used high intensity ultrasound and could be experienced more clearly these reactions. According to the principles of the sonochemical, when ultrasound waves

acting on a liquid it generated thousands of small burbujasn the interior of which is disturbed pressure and temperature. In fact, the temperature of the edges of these bubbles can reach thousands of degrees . The few millionths of a second it takes the "life" of these bubbles are sufficient to produce within it a multitude of chemical reactions, and may even change radically chemical structure of the liquid. even been proven that these ultrasound also have an effect on solid materials, especially metals

as copper , although these effects are obviously much less noticeable than in liquids and usually can not distinguished with the naked eye.

Applications Potential applications of sonochemical are endless. Examples include some of them:

One of the most useful is perhaps the
synthesis of new

Ken Suslick has been obtained hydrocarbons from a compound of iron pentacarbonyl by applying sonochemical techniques. such techniques can also increase the reactivity

some

. They can also be used for activation of metals such as lithium , the magnesium the zinc or copper . Another interesting application is its use in analytical

Another more practical use is Sonochemical

biodiesel or even hydrogen separation of some compounds. By the " sonopolimerización

emulsion suspension of certain polymers. Another more practical uses is extended

should also be mentioned the so-called "

as galena the crocoite or arsenolite , using ultrasound. The sonochemical also be applied in medicine

clots and treat muscular tension .

How To Record Xbox Game Play Without Capture Card

Infrasound Infrasound

, as we shall see. For example a plane wave of 10 Hz is absorbed four times less than a wave of 1000 Hz in water. The downside is that objects should be large enough to detect because, in such frequencies, the wavelength is very large which limits the minimum diameter of the object. As an example we say that a 10 Hz infrasound has a wavelength of 34 m in the air, then the objects to be detected should have a size of about 20 m in the air and 100 m in water.

communication of elephants

Example applications of the ultrasonic waves are in the animal world and communication among individuals of the same species. The most representative and most importantly we have the elephants. Evolution has made these animals emit infrasound, as these are not affected as they pass through giant forests and plains and allows them to communicate over great distances. Thus, females can tell males they are away from them, who are ready to mate, or a group can tell another where to find food. It has been found that the acoustic communication of this type can accurately locate the source of the signal, both time and space.

How is it possible that elephant infrasound appreciate? The key is the distance between your ears

:

Animals with small heads, which therefore have their ears closer, can hear sounds at higher frequencies than those with ears far apart, this is due mainly to the longitudes wave as we perceive sounds with wavelengths about our body size. From this, since the infrasound have long wavelengths, we can conclude that elephants can hear and produce this type of sound waves because they have a pretty mouth and head large.

Elephants are grouped into families that are coordinated through infrasound for miles around. Some of these calls, the strongest (116 dB and a frequency between 12 and 35 Hz), communicate the need to reproduce both males and females, which can be answered by individuals up to four kilometers away. But not only used for reproduction but also to arrange a time to nurse the pups or the route of a walk. Future applications

infrasound infrasound researchers are interested in the sounds of 10 Hz and lower (down to 0.001 Hz). In fact, this frequency range is the same one used seismographs to monitor earthquakes, infrasound sensors to find the acoustic signals from explosions. Because both volcanoes, tornadoes, turbulence of meteors, produce infrasound, those waves could detect and prevent a natural disaster.

In the not too distant infrasound stations will be built to solve, for example, problems of false alarms. Other acoustic techniques can be used in the field of medicine, for example in relation to bone disease or osteoporosis. The latter is currently being developed and not yet presented an interpretation clear. We will see that ultrasound

have more application in this field.

Jon And Kate Plus 8 Hit The Road

communication of elephants

Example applications of the ultrasonic waves are in the animal world and communication among individuals of the same species. The most representative and most importantly we have in elephants. Evolution has made these animals emit infrasound, as these are not affected as they pass through giant forests and plains and allows them to communicate over great distances. Thus, females can tell males they are away from them, who are ready to mate, or a group can tell another where to find food. It has been found that the acoustic communication of this type can accurately locate the source of the signal in both time and space.

How is it possible that elephant infrasound appreciate? The key is the distance between your ears

:

Animals with small heads, which are therefore closer ears can hear sounds at higher frequencies than those with ears far apart, this is essentially due to the longer wavelengths that we perceive sounds with wavelengths about our body size. From this, since the infrasound have long wavelengths, we can conclude that elephants can hear and produce this type of sound waves because they have an oral cavity and cranial quite large.

Elephants are grouped into families that are coordinated through infrasound for miles around. Some of these calls, the strongest (116 dB and a frequency entre 12 y 35 Hz), comunican la necesidad de reproducirse tanto de machos como de hembras, las cuales pueden ser contestadas por individuos alejados hasta cuatro kilómetros. Pero no sólo lo utilizan para la reproducción sino también para acordar la hora de amamantar a las crías o el recorrido de un paseo. Futuras aplicaciones del infrasonido

Los investigadores del infrasonido están interesados en sonidos de 10 Hz y más bajos (hasta 0,001 Hz). De hecho, este rango de frecuencias es el mismo que utilizan los sismógrafos para monitorear terremotos o los sensores infrasónicos para descubrir las señales acústicas provenientes de las explosiones. Debido a que tanto volcanes, tornados, turbulence of meteors, produce infrasound, those waves could detect and prevent a natural disaster.

In the not too distant infrasound stations will be built to solve, for example, problems of false alarms. Other acoustic techniques can be used in the field of medicine, for example in relation to bone disease or osteoporosis. The latter is being developed now and still no clear interpretation. We will see that ultrasound

have more application in this field.

Firstauditions Groping Hands Preview

ultrasound is in physical sound wave that can not be perceived by man to be at a higher frequency than the ear can grasp. This limit is aproximdamente in the 20 KHz. In contrast, other animals such as bats, dolphins and dogs, able to hear these frequencies, and even used as radar to navigate and hunt. Ultrasound is used in many fields of science and technology. For example, on Medicaid is used for diagnostic ultrasound (ultrasonography), physiotherapy, econografía, teeth cleaning, liposuction, etc.

The industry is used to measure distances, nondestructive testing, internal characterization of materials, cleaning surfaces, etc..

Militarily ultrasound can be used as a weapon. Uses

Ultrasounds are used both in industrial applications (measuring distances, internal characterization of materials, nondestructive testing and others) and medicine (see for example

ultrasound, physiotherapy

, ultrasonotherapy ). In the medical field is called the ultrasound equipment to devices such as fetal doppler, which uses ultrasound waves 2 to 3 MHz to detect the fetal heartbeat in the womb. What is the ultrasound imaging

general

Ultrasound gallbladder Ultrasound kidney Ultrasound liver , involves exposing part of the body to high-frequency sound waves to produce images inside the body. Ultrasound exams do not use ionizing radiation

Ultrasound imaging, also called ultrasound scanning or sonography

(used in X-ray

). Because ultrasound images are captured in real time, can show the structure and movement of the body's internal organs, as well as blood flowing through blood vessels. The ultrasound imaging is a noninvasive medical test that helps physicians diagnose and treat medical conditions.

Conventional ultrasound displays the images in thin, flat sections of the body. Advances in ultrasound technology include three-dimensional ultrasound (3-D) that transforms the data of acoustic waves in 3-D images. Ultrasound images of a four-dimensional (4-D) consists of a 3-D ultrasound in motion.

A Doppler ultrasound study may be part of an ultrasound examination.

The Doppler ultrasound

is a special ultrasound technique that evaluates blood as it flows through blood vessels, including arteries and major veins of the body found in the abdomen, arms, legs and neck.

There are three types of Doppler ultrasound:

The

color Doppler uses a computer to convert Doppler measurements into an array of colors to display the speed and direction of blood flow through a blood vessel. The

Cat Feeding Guidelines In Grams

Doppler Effect

When the wave source and the observer

are in relative motion, the frequency of the waves observed is different from the frequency of emitted waves. wave fronts emitted by the source are concentric spheres, the separation between waves is lower towards the side on which the issuer is movement

endo and more on the opposite side. To the observer, at rest or in motion this corresponds to a greater or lesser frequency. If the observer is close to the source on the right wavelength will notice a lower (or higher frequency) and advise if otherwise away from the source.

If the transmitter emits sound waves, the sounds do

heard by the observer on the right of the issuer, will sharper and the sound esc uchado by the observer on the left will be more severe. In other words, cu 'm the transmitter approaches the observer, he hears a sharp sound when the transmitter is away from the observer, he hears a deeper sound. If the source velocity exceeds the wave phenomenon occurs following as the one produced when it breaks the sound barrier

http://www.sociedadelainformacion.com / departfqtobarra / waves / doppler / doppler.html

teleformacion.edu ...