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Author Topic: A-Z of AVIONICS  (Read 448750 times)

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #225 on: 24/11/2006 19:23:23 »
Iceland spar: A transparent colorless calcite, found especially in Iceland:it is used by opticians for makingdouble refracting prisms.
« Last Edit: 26/11/2006 23:46:29 by Karen W. »
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #226 on: 24/11/2006 19:25:41 »
Too much honour, dear friendo Neilepus,
but actually I should spend my time 'surfing'
through parents websites (do they have any?),
instead of playing around here!


Lindberg Charles Augustus Jr. (1902-1974)
...known as "Lucky Lindy" and "The Lone Eagle", was an American aviator famous for piloting the first solo non-stop flight across the Atlantic Ocean in 1927.

Some believe Lindbergh tarnished his good name by his leadership in the movement to keep the US out of World War II. He was a great advocate for the peace movement and the peaceful resolution of conflict with Germany.


ikod
« Last Edit: 23/06/2007 21:46:32 by iko »
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #227 on: 24/11/2006 19:32:48 »
Millibar: A unit which is used as a measure of atmospheric pressure. It is equal to 1000 dynes per square centimetre. The standard atmospheric pressure is  1013.25 millibars (75.97 centimetres of mercury).
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #228 on: 24/11/2006 19:41:01 »
Nutrition Science

Nutritional supplement:


ikod
« Last Edit: 23/06/2007 21:47:08 by iko »
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #229 on: 24/11/2006 20:16:02 »
Occulltation: The covering up of one celestial body by another. Thus the moon may pass in front of a star or ( occasionally) a planet; A planet may occult a star; and there have been cases when one planet has occulted another- for instance, Venus occulted Mars in 1950. Strickly speaking, solar eclipses are occultations of the Sun by the Moon.
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #230 on: 24/11/2006 22:47:52 »
Paragonimiasis


Paragonimus westermani (Lung Fluke)

Epidemiology
Lung fluke is most commonly encountered in parts of Asia, Africa and South America.
Morphology
It is a plump reddish brown oval worm measuring 10 by 4 mm. The ovum measures 85 by 55 micrometers
Life cycle
Lung fluke infects man (and domestic carnivores) when crabmeat infested with encysted metacercaria is consumed. The metacercaria reach the small intestine, exit their shell and bore their way, as young flukes, through the intestinal wall, through the thoracic diaphragm and penetrate the lung. There, they become enclosed in 1 to 2 cm cysts and reach maturity. The eggs are found in the sputum or, if swallowed, in the feces, 2 to 3 months after infection. The eggs, when introduced in fresh water produce a miracidia which penetrates the suitable snail. In the snail they develop into cercaria which break out in water and penetrate gills, muscle or viscera of fresh water crabs and become encysted in flesh as metacercaria.
Symptoms
The fluke provokes the development of a fibrous tissue capsule with bloody purulent material containing eggs. There is inflammatory infiltrate around the capsule. The symptoms include a dry cough, followed by production of blood stained rusty brown sputum. Pulmonary pain and pleurisy may develop. Worms may migrate to the brain where they lay eggs and cause a granulomatous abscess resulting in symptoms similar to epilepsy.
Diagnosis
Diagnosis is based on history and symptoms. Eggs are found in rust colored sputum, often being examined for tuberculosis.
Treatment and control
Praziquantel taken orally is quite effective. Adequate cooking of crustaceans is a preventive measure. Improved sanitary conditions have lowered the infection rate in endemic areas.
from:  http://pathmicro.med.sc.edu/parasitology/trematodes.htm



ikod
« Last Edit: 23/06/2007 21:47:37 by iko »
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #231 on: 26/11/2006 17:52:32 »
Schistosomiasis

I did a talk on this subject and I think it went well. Amazing how nervous you think you will be doing a talk. Once I went over it with my partner a few times I was actually confident and couldn't wait to do it :-D.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #232 on: 26/11/2006 18:18:53 »
No Q OR R? ;)


Tension (mechanics)


Tension is a reaction force applied by a stretched string (rope or a similar object) on the objects which stretch it. The direction of the force of tension is parallel to the string, towards the string.

Tension exists also inside the string itself: if the string is considered to be composed of two parts, tension is the force which the two parts of the string apply on each other. The amount of tension in the string determines whether it will break, as well as its vibrational properties, which are used in musical instruments.

The magnitude of the force of tension typically increases with the amount of stretching. For small stretching, the force is often described by Hooke's law.

String-like objects in relativistic theories, such as the strings used in some models of interactions between quarks, or those used in the modern string theory, also possess tension. These strings are analyzed in terms of their world sheet, and the energy is then typically proportional to the length of the string. As a result, the tension in such strings is independent of the amount of stretching.
« Last Edit: 26/11/2006 18:30:00 by Karen W. »
 

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Re: A-Z of AVIONICS
« Reply #233 on: 26/11/2006 18:33:08 »
Uranium
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #234 on: 26/11/2006 19:13:35 »
Von Willebrand Factor

Von Willebrand factor (VWF) is a protein that is involved in blood clotting after injury to a blood vessel. When a vessel is torn, platelet cells collect in the cut region and create a fibrous mesh that seals off the area and stops further bleeding. The VWF serves two major functions: it helps attach platelets to the site of blood vessel injury, and it helps transport the "factor VIII" (factor 8) clotting protein to the site of injury.

There are several inherited genetic disorders related to abnormal function of VWF. Symptoms may be similar to those of hemophilia, although the underlying causes are different. Some forms of VWF are quite mild and may remain undiagnosed, while others are more like hemophilia and result in serious bleeding and blood clotting problems.
http://www.soe.ucsc.edu/classes/bme220/Spring05/homework1/alexgw/



ikod
« Last Edit: 23/06/2007 21:48:12 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #235 on: 26/11/2006 19:18:19 »
Wallace Alfred Russel


Alfred Russel Wallace, OM, FRS (January 8, 1823 November 7, 1913) was a Welsh naturalist, explorer, geographer, anthropologist and biologist. He independently proposed a theory of natural selection which prompted Charles Darwin to publish his own more developed and researched theory sooner than he had intended. Wallace is sometimes called the "father of biogeography".






 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #236 on: 26/11/2006 21:14:14 »
No Q OR R? ;)


Tension (mechanics)


Tension is a reaction force applied by a stretched string (rope or a similar object) on the objects which stretch it. The direction of the force of tension is parallel to the string, towards the string.

Tension exists also inside the string itself: if the string is considered to be composed of two parts, tension is the force which the two parts of the string apply on each other. The amount of tension in the string determines whether it will break, as well as its vibrational properties, which are used in musical instruments.

The magnitude of the force of tension typically increases with the amount of stretching. For small stretching, the force is often described by Hooke's law.

String-like objects in relativistic theories, such as the strings used in some models of interactions between quarks, or those used in the modern string theory, also possess tension. These strings are analyzed in terms of their world sheet, and the energy is then typically proportional to the length of the string. As a result, the tension in such strings is independent of the amount of stretching.

I'm sure they where there when I posted. Oh well.
 

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Re: A-Z of AVIONICS
« Reply #237 on: 27/11/2006 00:51:02 »
X-Chromosomes
 

Offline ukmicky

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Re: A-Z of AVIONICS
« Reply #238 on: 27/11/2006 02:26:13 »
Y-chromosomes :)
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #239 on: 27/11/2006 08:17:23 »
Zener effect

Zener diode


http://hyperphysics.phy-astr.gsu.edu/Hbase/solids/imgsol/diod10.gif
http://www.robotroom.com/RoundaboutPCBs/ZenerDiode.jpg


The Zener Effect
With the application of sufficient reverse voltage, a p-n junction will experience a rapid avalanche breakdown and conduct current in the reverse direction. Valence electrons which break free under the influence of the applied electric field can be accelerated enough that they can knock loose other electrons and the subsequent collisions quickly become an avalanche. When this process is taking place, very small changes in voltage can cause very large changes in current. The breakdown process depends upon the applied electric field, so by changing the thickness of the layer to which the voltage is applied, zener diodes can be formed which break down at voltages from about 4 volts to several hundred volts.
http://hyperphysics.phy-astr.gsu.edu/Hbase/solids/zener.html

« Last Edit: 23/06/2007 21:49:17 by iko »
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #240 on: 27/11/2006 10:59:36 »
ATP
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #241 on: 27/11/2006 12:08:09 »
"Boole, George (1815-64)was an English mathmatician who became a professor at QueensCollege, Cork. He set out to devise an algebraic formula for logic by replacing logical statements by set-collections of mathematical objects." (quote Taken from a "Brief history of Science" consultant editor John Gribbin, Published by "The ivy press limited 1998")
 

Offline iko

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« Last Edit: 23/06/2007 21:50:17 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #243 on: 27/11/2006 22:38:36 »
Diuretic

A diuretic (colloquially called a water pill) is any drug or herb that elevates the rate of bodily urine excretion (diuresis). Diuretics also decrease the extracellular fluid (ECF) volume, and are primarily used to produce a negative extracellular fluid balance. Caffeine, cranberry juice and alcohol are all weak diuretics.

Uses

In medicine, diuretics are used to treat heart failure, liver cirrhosis, hypertension and certain kidney diseases. Diuretics alleviate the symptoms of these diseases by causing sodium and water loss through the urine. As urine is produced by the kidney, sodium and water which cause edema related to the disease move into the blood to replace the volume lost as urine, thereby reducing the pathological edema. Some diuretics, such as acetazolamide, help to make the urine more alkaline and are helpful in increasing excretion of substances such as aspirin in cases of overdose or poisoning.

The antihypertensive actions of some diuretics (thiazides and loop diuretics in particular) are independent of their diuretic effect. That is, the reduction in blood pressure is not due to decreased blood volume resulting from increased urine production, but occurs through other mechanisms and at lower doses than that required to produce diuresis. Indapamide was specifically designed with this is mind, and has a larger therapeutic window for hypertension (without pronounced diuresis) than most other diuretics.
 

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Re: A-Z of AVIONICS
« Reply #244 on: 27/11/2006 23:18:07 »
Erythromycin
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #245 on: 28/11/2006 13:21:57 »
Evolution
 

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Re: A-Z of AVIONICS
« Reply #246 on: 28/11/2006 13:25:14 »
Fossil Record: the Evidence of past life preserved in a fossil form.
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #247 on: 28/11/2006 19:02:28 »
Garlic antifungal intravenous  preparations
(Allium sativum)



Enhanced diallyl trisulfide has in vitro synergy with amphotericin B against Cryptococcus neoformans.
Shen J, Davis LE, Wallace JM, Cai Y, Lawson LD.
Department of Microbiology, University of New Mexico School of Medicine, Albuquerque, USA.

Although amphotericin B remains the drug of choice for systemic fungal infections, its use is limited by considerable side effects. In The Peoples' Republic of China, commercial Allium sativum derived compounds are widely used as an antifungal drug to treat systemic fungal infections. To evaluate the scientific merit of using A. sativum derived compounds as antifungal agents, we studied a Chinese commercial preparation, allitridium. This preparation contained mainly diallyl trisulfide as confirmed by high performance liquid chromatography. Allitridium, with and without amphotericin B, was tested to determine its efficacy in killing three isolates of Cryptococcus neoformans. The minimum inhibitory concentration of the commercial preparation was 50 micrograms/ml and the minimum fungicidal concentration was 100 micrograms/ml against 1 x 10(5) organisms of C. neoformans. In addition, the commercial preparation was shown to be synergistic with amphotericin B in the in vitro killing of C. neoformans. This study demonstrates that diallyl trisulfide and other polysulfides possess potent in vitro fungicidal effects and their activity is synergistic with amphotericin B. These observations lend laboratory support for the treatment of cryptococcal infections with both amphotericin B and the Chinese commercial preparation.

Planta Med. 1996 Oct;62(5):415-8.


Unfortunately these data had not been confirmed...yet.

ikod
« Last Edit: 23/06/2007 21:50:53 by iko »
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #248 on: 28/11/2006 22:24:11 »
Hydrophobic interactions
 

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Re: A-Z of AVIONICS
« Reply #249 on: 28/11/2006 23:06:33 »
I band


The I band is the range of radio frequencies from 8 GHz to 10 GHz in the electromagnetic spectrum. This is equal to wave lengths between 3.75 cm and 3 cm. The I band is in the SHF range of the radio spectrum.

The I band lies in the X band of the older classification system.
 

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Re: A-Z of AVIONICS
« Reply #249 on: 28/11/2006 23:06:33 »

 

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