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Author Topic: A-Z of AVIONICS  (Read 448257 times)

Offline iko

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Re: A-Z of AVIONICS
« Reply #375 on: 27/01/2007 20:24:49 »
Western Blot


Neat picture!
Easy to catch...
« Last Edit: 09/04/2007 16:29:22 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #376 on: 27/01/2007 20:31:57 »
Xenon (IPA: /ˈzɛnɒn, ˈziːnɒn/) is a chemical element in the periodic table that has the symbol Xe and atomic number 54. A colorless, heavy, odorless noble gas, xenon occurs in the earth's atmosphere in trace amounts and was part of the first noble gas compound synthesized.[1][2]

Notable characteristics

Xenon is a member of the zero-valence elements that are called noble or inert gases, however, "inert" is not a completely accurate description of this chemical series since some noble gas compounds have been synthesized. In a gas filled tube, xenon emits a blue glow when the gas is excited by electrical discharge. Using tens of gigapascals of pressure, xenon has been forced into a metallic phase.[3] Xenon can also form clathrates with water when atoms of it are trapped in a lattice of the water molecules.


Xenon in shaped Geissler tubes.


This gas is most widely and most famously used in light-emitting devices called Xenon flash lamps, which are used in photographic flashes, stroboscopic lamps, to excite the active medium in lasers which then generate coherent light, to produce laser power for inertial confinement fusion, in bactericidal lamps (rarely), and in certain dermatological uses. Continuous, short-arc, high pressure Xenon arc lamps have a color temperature closely approximating noon sunlight and are used in solar simulators, some projection systems, automotive HID headlights and other specialized uses. They are an excellent source of short wavelength ultraviolet light and they have intense emissions in the near infrared, which are used in some night vision systems. Other uses of Xenon:

    * Has been used as a general anaesthetic, though it is expensive. Even so, anesthesia machines that can deliver Xenon are about to appear on the European market.
    * In nuclear energy applications it is used in bubble chambers, probes, and in other areas where a high molecular weight and inert nature is a desirable quality.
    * Perxenates are used as oxidizing agents in analytical chemistry.
    * The isotope Xe-133 is useful as a radioisotope.
    * Hyperpolarized MRI of the lungs and other tissues using 129Xe.[4]
    * Preferred fuel for Ion propulsion because of high molecular weight, ease of ionization, store as a liquid at near room temperature (but at high pressure) yet easily converts back into a gas to fuel the engine, inert nature makes it environmentally friendly and less corrosive to an ion engine than other fuels such as mercury or cesium. Europe's SMART-1 spacecraft utilized Xenon in its engines.[5]
    * Is commonly used in protein crystallography. Applied at high pressure (~600 psi) to a protein crystal, xenon atoms bind in predominantly hydrophobic cavities, often creating a high quality, isomorphous, heavy-atom derivative.
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #377 on: 27/01/2007 22:56:17 »
« Last Edit: 09/04/2007 16:29:43 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #378 on: 28/01/2007 00:35:26 »
Zantac (Trade Name) for ..........

Ranitidine


Ranitidine (INN) (IPA: [rəˈnɪ tədin]) is a histamine H2-receptor antagonist that inhibits stomach acid production, and commonly used in the treatment of peptic ulcer disease (PUD) and gastroesophageal reflux disease (GERD). It is currently marketed under the trade name Zantac by GlaxoSmithKline in prescription form and by Pfizer in over-the-counter form.


Certain preparations of ranitidine are available over the counter (OTC) in various countries. In the United States, 75 mg and 150 mg tablets are available OTC. In Australia, small packs of 150 mg and 300 mg tablets are Schedule 2 Pharmacy Medicines. Larger doses and pack sizes still require a prescription.

Outside of the United States, ranitidine is combined with bismuth (which acts as a mild antibiotic) as a citrate salt (ranitidine bismuth citrate, Tritec®), to treat Helicobacter pylori infections. This combination is usually given with clarithromycin, another antibiotic.
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #379 on: 28/01/2007 02:52:53 »
Accretion Tectonics= The science of Continental assembly from fragments of Continental crust.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #380 on: 28/01/2007 16:02:43 »
Biology






Biology studies the variety of life (clockwise from top-left) E. coli, tree fern, gazelle, Goliath beetle

Biology (from Greek Βìο meaning life and Λoγος meaning the study of) is the study of life. Biology encompasses a broad spectrum of academic fields that are often viewed as independent disciplines. However, together they address phenomena related to living organisms (biological phenomena) over a wide range of scales, from biophysics to ecology. It is concerned with the characteristics, classification, and behaviors of organisms, how species come into existence, and the interactions they have with each other and with the natural environment.

Many of the subdisciplines of biology, such as botany, zoology, and medicine are ancient. However, biology as a unified science first developed in the nineteenth century, as scientists discovered that all living things shared certain fundamental characteristics and were best studied as a whole. Today biology is one of the most prominent scientific fields. Over a million papers are published annually in a wide array of biology and medicine journals[1], and biology is a standard subject of instruction at schools and universities around the world.

As such a vast field, biology is divided into a number of subdisciplines. The old division by type of organism remains with botany encompassing the study of plants, zoology the study of animals, microbiology the study of microorganisms, and other similar disciplines. The field is also divided by the scale being studied: molecular biology looks at the fundamental chemistry of life; cellular biology looks a the basic building block of all life the cell; Physiology looks at the internal structure of organism; and ecology looks at how various organisms interrelate.
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #381 on: 28/01/2007 16:07:14 »
Chirality- The ability of a molecule to exist in two mirror-image forms, with different properties.
 

Offline iko

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« Last Edit: 09/04/2007 16:30:23 by iko »
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #383 on: 28/01/2007 16:53:24 »
Are those duchaties (spelling)

Electrons
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #384 on: 28/01/2007 17:01:12 »
Hi Karen,

...the red one (first position!) is a Ducati!
spell Dookattee...or something like this



Filariasis (Loa-loa)


http://www.paru.cas.cz/helminti/Nematoda/Loa_loa.gif

« Last Edit: 09/04/2007 16:31:01 by iko »
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #385 on: 28/01/2007 17:07:40 »
Thanks, the red looks right! Your picture is not opening up!
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #386 on: 28/01/2007 17:43:05 »
Geography


Geography (from the Greek words Ge (γη) or Gaea (γαια), both meaning "Earth", and graphein (γραφειν) meaning "to describe" or "to write"or "to map") is the study of the earth and its features and of the distribution of life on the earth, including human life and the effects of human activity.[1] A literal translation would be "to describe the Earth". The first person to use the word "geography" was Eratosthenes (275-195 BCE). Four historical traditions in geographical research are the spatial analysis of natural and human phenomena (geography as a study of distribution), area studies (places and regions), study of man-land relationship, and research in earth sciences. [2] Nonetheless, modern geography is an all-encompassing discipline that foremost seeks to understand the world and all of its human and natural complexities-- not merely where things are, but how they have changed and come to be. It is said to be the "mother of all sciences" and "the synthesizer of knowledge." As "the bridge between the human and physical sciences," geography is divided into two main branches, human geography and physical geography.[3]


 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #387 on: 28/01/2007 17:48:22 »
Homeotic genes (hox genes) - The genes that determine development and body plan.
 

Offline iko

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« Last Edit: 09/04/2007 16:31:27 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #389 on: 28/01/2007 18:38:51 »
   


Isosceles Triangle









An isosceles triangle is a triangle with (at least) two equal sides. In the figure above, the two equal sides have length b and the remaining side has length a. This property is equivalent to two angles of the triangle being equal. An isosceles triangle therefore has both two equal sides and two equal angles. The name derives from the Greek iso (same) and skelos (leg).

A triangle with all sides equal is called an equilateral triangle, and a triangle with no sides equal is called a scalene triangle. An equilateral triangle is therefore a special case of an isosceles triangle having not just two, but all three sides and angles equal. Another special case of an isosceles triangle is the isosceles right triangle
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #390 on: 28/01/2007 18:39:30 »
DOH !!!....I hate it when than happens ..... ;D ;D ;D
 

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Re: A-Z of AVIONICS
« Reply #391 on: 28/01/2007 18:42:11 »
Jurrasic Period
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #392 on: 28/01/2007 18:47:16 »
Koplik spots


Earliest sign of MEASLES

for reading more, click here:   http://www.imcworldwide.org/cbr/L1C-m2.html
« Last Edit: 09/04/2007 16:31:55 by iko »
 

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Re: A-Z of AVIONICS
« Reply #393 on: 28/01/2007 18:53:18 »
Liposuction
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #394 on: 28/01/2007 18:56:58 »
Mammary gland


Mammary glands are the organs that, in the female mammal, produce milk for the sustenance of the young. These exocrine glands are enlarged and modified sweat glands and are the characteristic of mammals which gave the class its name.




 

Offline iko

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« Last Edit: 09/04/2007 16:32:16 by iko »
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #396 on: 28/01/2007 19:09:59 »
Orbital theory
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #397 on: 29/01/2007 17:38:03 »
Palmer micrometer


Micromètre ou palmer.

Capable de mesurer une côte extérieure avec une précision de l'ordre du 100ème de mm, il comprend un corps en demi cercle (1), supportant à l'une de ses extrémités une enclume fixe (2) et à l'autre extrémité une douille cylindrique fixe, filetée te graduée en mm (3). Sur cette douille est visser une broche mibile (4) supportée par un tambour, gradué avec 50 divisions (5).
Comme un pied à coulisse, il est possible d'immobiliser la broche à l'aide d'un système de blocage (66), pour faciliter la lecture.

A l'exception de l'attention portée au serrage de la pièce, la précaution principale d'utilisation consiste à ne pas commettre d'erreur de lecture. En effet, il faut deux tours de vernier (5) pour "couvrir" 1 mm.

Le micromètre d'intérieur ou jauge micrométrique est identique ou palmer et permet de mesurer une cote intérieure. Même principe et précaution d'utilisation.

for more reading:  http://www.ac-bordeaux.fr/Etablissement/LpDuperier/pedagogi/cours/maint/methode/mesure.htm





« Last Edit: 09/04/2007 16:32:42 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #398 on: 30/01/2007 00:11:03 »
Quack !!

The noise a duck makes !!
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #399 on: 30/01/2007 02:52:01 »
Radiation
 

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Re: A-Z of AVIONICS
« Reply #399 on: 30/01/2007 02:52:01 »

 

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