A-Z of AVIONICS

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Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #150 on: 14/11/2006 07:19:11 »
Kirkwood gaps; Regions in the belt of Asteroids between mars and Jupiter in which almost no asteroids move.

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Offline lgic

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Re: A-Z of AVIONICS
« Reply #151 on: 14/11/2006 15:54:53 »
L
Ligand gated ion channel

Proteins that span the extracellular membranes of cells, especially neurons and muscle. The protein contains a pore that is opened when it binds ligand (usually a neurotransmitter). When the pore opens, it makes a channel connecting the inside of the of cell with whatever is outside the cell. Ions can cross into or out of the cell, depending on their concentration gradients, the voltage, and the ionic selectivity of the pore, and the result is chemical communication. Examples are nicotinic acetylcholine receptors, GABA receptors, glycine receptors and some serotonin receptors.

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Offline science_guy

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Re: A-Z of AVIONICS
« Reply #152 on: 14/11/2006 16:08:02 »
mars
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I would engage you in a battle of wits, but it is against my moral code to attack the unarmed.

he's back!!!!

no, my name is not Bill Nye

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Re: A-Z of AVIONICS
« Reply #153 on: 14/11/2006 16:23:24 »
Nanotechnology- Technology on the molecular scale.

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Offline neilep

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Re: A-Z of AVIONICS
« Reply #154 on: 14/11/2006 16:43:35 »
Oscilloscope


An oscilloscope (sometimes abbreviated CRO, for cathode-ray oscilloscope, or commonly just scope or O-scope) is a piece of electronic test equipment that allows signal voltages to be viewed, usually as a two-dimensional graph of one or more electrical potential differences (vertical axis) plotted as a function of time or of some other voltage (horizontal axis)



A Tektronix model 475A portable analogue oscilloscope, a very typical instrument of the late 1970s. This dual-trace, dual-sweep instrument had a horizontal bandwidth of 250 MHz, a maximum vertical sensitivity of 5 mV per division, and maximum (unmagnified) horizontal sweep speed of 10 ns per division. The vertical controls are on the left with Channel 1 above and Channel 2 below. The horizontal sweep controls are on the right with the Main Trigger above and the Delayed Trigger below. The CRT controls are below the screen. The metal loop to the lower right of the screen provided a calibration signal for voltage and current probes.

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Re: A-Z of AVIONICS
« Reply #155 on: 14/11/2006 17:24:24 »
Prokaryote-A single-celled organism with no distinct nucleus.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #156 on: 14/11/2006 21:06:48 »
Quasar...
...don't ask ME!

ikod most of the time
« Last Edit: 23/06/2007 21:33:08 by iko »

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Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #157 on: 14/11/2006 22:36:34 »
Ribonucleic Acid
Steven
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Offline iko

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Re: A-Z of AVIONICS
« Reply #158 on: 14/11/2006 23:08:19 »
von Szent-gyorgy Albert
Nobel Prize in Physiology or Medicine 1937
"For his discoveries in connection with
the biological combustion processes,
with special reference to vitamin C
and the catalysis of fumaric acid"

ikod
 
« Last Edit: 23/06/2007 21:33:46 by iko »

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Re: A-Z of AVIONICS
« Reply #159 on: 15/11/2006 00:04:47 »
Tentacles can refer to the elongated flexible organs that are present in some animals, especially invertebrates, and sometimes to the hairs of the leaves of some insectivorous plants. Usually, they are used for feeding, feeling and grasping. Anatomically, they work like other muscular hydrostats.


[attachment=41]
Cuttlefish with 2 tentacles and 8 arms




[attachment=43]
Leaf and tentacle movement on D. capensis
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Re: A-Z of AVIONICS
« Reply #160 on: 15/11/2006 05:34:57 »
NICE PHOTO!

UMBRA: (1) The dark inner portion of a sunspot. (2) The maincone of a shadow cast by a planet or the moon.

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Offline neilep

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Re: A-Z of AVIONICS
« Reply #162 on: 15/11/2006 15:32:45 »
Wikipedia is a multi-lingual, Web-based free content encyclopedia project. The name Wikipedia is a portmanteau of the words wiki and encyclopedia. Wikipedia is written collaboratively by volunteers, allowing most articles to be changed by almost anyone with access to the Web site. Wikipedia's main servers are in Tampa, Florida, with additional servers in Amsterdam and Seoul.

Wikipedia was launched as an English language project on January 15, 2001, as a complement to the expert-written and now defunct Nupedia, and now is operated by the non-profit Wikimedia Foundation. It was created by Larry Sanger and Jimmy Wales; Sanger resigned from both Nupedia and Wikipedia on March 1, 2002. Wales has described Wikipedia as "an effort to create and distribute a multi-lingual free encyclopedia of the highest possible quality to every single person on the planet in their own language".[1]


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Offline neilep

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Re: A-Z of AVIONICS
« Reply #163 on: 15/11/2006 15:34:20 »
X-band

A band of radio frequencies extending from 5200 to 10 900 MHz
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Re: A-Z of AVIONICS
« Reply #164 on: 15/11/2006 15:37:52 »
The Y chromosome is the sex-determining chromosomes in humans and most other mammals. In mammals, it contains the gene SRY, which triggers testis development, thus determining maleness.


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Re: A-Z of AVIONICS
« Reply #165 on: 15/11/2006 15:58:34 »
Zodiacal constellations:The 12 constellations used in astrology.

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Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #166 on: 15/11/2006 16:45:15 »
Alpha Helix



Steven
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Re: A-Z of AVIONICS
« Reply #167 on: 15/11/2006 17:16:27 »
Cool!

Big Crunch-A possible future reversal of the big bang.

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Re: A-Z of AVIONICS
« Reply #169 on: 16/11/2006 03:34:47 »
Doppler shift-The "police siren" effect,when waves propagated by a moving body have their wavelength stretched as the body moves away.

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Re: A-Z of AVIONICS
« Reply #170 on: 16/11/2006 11:33:21 »
Endotoxin or Exotoxin
Steven
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Re: A-Z of AVIONICS
« Reply #171 on: 16/11/2006 16:27:53 »
Flocculi: Patches on the suns surface based on the principal of the spectrascope. Bright Flocculi are composed of calcium, dark flocculi are made up of hydrogen.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #172 on: 16/11/2006 19:13:42 »
GVHD - Graft Versus Host Disease 

acute and chronic reactions of donor's
T-lymphocytes against recipient's cells:
skin, gut, liver, CNS, eyes...

It could be easily prevented by removing
T-lymphocytes from the stem cell graft...
but if you do that, the probability of
either recurrence of leukemia or graft failure
increases significantly.

A new debilitating disease seems to keep
stalling the previous ailment.


ikod
« Last Edit: 23/06/2007 21:35:48 by iko »

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Re: A-Z of AVIONICS
« Reply #173 on: 16/11/2006 19:51:01 »
Helioseismology

The study of the Sun's interior by measuring oscillations (ripples) as they appear at the surface. The oscillations are caused by sound waves that originate at different depths inside the Sun. By measuring their travel times and the distance they travel, scientists can study conditions in the Sun's interior.
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Re: A-Z of AVIONICS
« Reply #174 on: 17/11/2006 06:32:14 »
Ionosphere: The region above the stratasphere,from about 65 miles up to about 800 kilometres. Ionization  of the atoms in this region produces layers which reflect radio waves , making long-range communication over the earth possible. Solar events have effects upon the ionosphere, and produce ioospheric storms;on occasion, radio communication is interrupted.(Phiips Atlas Of The Universe Sir Patrick Moore )

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Offline iko

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Re: A-Z of AVIONICS
« Reply #175 on: 17/11/2006 11:10:33 »
« Last Edit: 23/06/2007 21:36:44 by iko »

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Re: A-Z of AVIONICS
« Reply #176 on: 17/11/2006 13:34:01 »
Mitosis - The type of cell division that creates two identical cells.

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Re: A-Z of AVIONICS
« Reply #177 on: 17/11/2006 15:24:02 »
Narcolepsy is a neurological condition most characterized by Excessive Daytime Sleepiness (EDS), episodes of sleep and disorder of REM or rapid eye movement sleep. It is a type of dyssomnia.(sleep disorder)
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Offline science_guy

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Re: A-Z of AVIONICS
« Reply #178 on: 17/11/2006 16:32:06 »
optometrist
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I would engage you in a battle of wits, but it is against my moral code to attack the unarmed.

he's back!!!!

no, my name is not Bill Nye

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Re: A-Z of AVIONICS
« Reply #179 on: 17/11/2006 16:51:14 »
Paleomagnetism - A record of the Earth's magnetic field preserved in ancient rocks at the time of their formation.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #180 on: 17/11/2006 17:13:29 »
Quenching effect

...Methanol intoxication increased lipid peroxidation and depleted the free radical scavenging enzyme systems. The free radical quenching effect of vitamin E ...

from:  Free radical changes in methanol toxicity
http://cat.inist.fr/?aModele=afficheN&cpsidt=14669114

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« Last Edit: 23/06/2007 21:37:18 by iko »

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Re: A-Z of AVIONICS
« Reply #181 on: 18/11/2006 04:04:37 »
Ribosomes- The sites of protein synthesis in a cell.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #182 on: 18/11/2006 09:19:57 »
Sesame seeds
sesame butter
sesaminol
sesamolin

Sesaminol from sesame seed induces apoptosis in human lymphoid leukemia Molt 4B cells.
Miyahara Y, Hibasami H, Katsuzaki H, et al.

The exposure of human lymphoid leukemia Molt 4B cells to sesaminol, a component of sesame oil led to both growth inhibition and the induction of apoptosis. Morphological change showing apoptotic bodies was observed in the cells treated with sesaminol. The fragmentation of DNA by sesaminol to oligonucleosomal-sized fragments that are characteristics of apoptosis was observed to be concentration- and time-dependent. These findings suggest that growth inhibition of Molt 4B cells by sesaminol results from the induction of apoptosis in the cells.


Int J Mol Med. 2001 May;7(5):485-8.

ikod


« Last Edit: 23/06/2007 21:37:44 by iko »

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Re: A-Z of AVIONICS
« Reply #183 on: 18/11/2006 09:34:05 »
Taxonomy- The science of classifing living and distinct organisms.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #184 on: 18/11/2006 09:56:29 »
« Last Edit: 23/06/2007 21:38:11 by iko »

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Re: A-Z of AVIONICS
« Reply #185 on: 18/11/2006 17:18:12 »
 Variale Stars:Stars which fluctuate in brightness over short periods ot time.

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Re: A-Z of AVIONICS
« Reply #186 on: 19/11/2006 21:57:20 »
weight - the force on an object due to the gravitational pull of a planet or other heavenly body
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Re: A-Z of AVIONICS
« Reply #187 on: 19/11/2006 22:35:41 »
X-rays

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Offline iko

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Re: A-Z of AVIONICS
« Reply #188 on: 20/11/2006 00:34:18 »
Yeast replicative plasmid (YRp)

A yeast vector that carries a chromosomal origin of replication.

http://www.sci.sdsu.edu/~smaloy/Glossary/Y.html

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« Last Edit: 23/06/2007 21:38:40 by iko »

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Re: A-Z of AVIONICS
« Reply #189 on: 20/11/2006 01:45:32 »
Zodiacal Light: the twelve costellations used in astrology.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #190 on: 20/11/2006 16:36:57 »
Amastigotes

(Leishmania donovani)


...In order to develop a successful parasitic relationship with its host, the leishmania must evade both the innate and adaptive immune responses. When leishmania first enters the human body, it is in the promastigote form. Promastigotes are engulfed by macrophages but are resistant to proteolysis and degradation in the phagosome. Once inside the macrophage, the organism is termed an amastigote. By continuing to live inside the macrophage, leishmania effectively avoids the humoral branch of the immune system. During each of the steps described, the protozoa evade and at times manipulate the human immune system and avoid digestion.
http://www.brown.edu/Courses/Bio_160/Projects2000/Leishmaniasis/immune.html
« Last Edit: 23/06/2007 21:39:20 by iko »

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Re: A-Z of AVIONICS
« Reply #191 on: 20/11/2006 16:45:40 »
Bolide: A brilliant meteor, which may explode during its decent through the earths atmosphere.

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Re: A-Z of AVIONICS
« Reply #193 on: 20/11/2006 17:05:21 »
Diurnal motion: The apparent daily rotation of the sky from east to west. It is due to the real rotation of the earth from west to east.

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Offline science_guy

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Re: A-Z of AVIONICS
« Reply #194 on: 20/11/2006 17:15:07 »
Earth
_________________________________________________________________________________________

I would engage you in a battle of wits, but it is against my moral code to attack the unarmed.

he's back!!!!

no, my name is not Bill Nye

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Re: A-Z of AVIONICS
« Reply #195 on: 20/11/2006 17:33:04 »
Fibonacci numbers: An infinite sequence of numbers in which each number is the sum of the previous two numbers: 1,1,2,3,5,8, etc.

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Re: A-Z of AVIONICS
« Reply #196 on: 20/11/2006 19:41:25 »
« Last Edit: 23/06/2007 21:40:26 by iko »

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Re: A-Z of AVIONICS
« Reply #197 on: 21/11/2006 07:30:32 »
Isotope: Any of two or more forms of an element having the same or very closely related chemical propertiesand the same atomic number but different atomic weights (or mass numbers)[U 235, U 238, and U 239 are three isotopes  of Uranium.] Different isotopes of an element have different numbers of neutrons in their atomic nuclei.

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Offline iko

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Re: A-Z of AVIONICS
« Reply #198 on: 22/11/2006 14:34:58 »
Jeune disease

Thoracic dystrophy of the newborn
« Last Edit: 23/06/2007 21:40:52 by iko »

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Re: A-Z of AVIONICS
« Reply #199 on: 22/11/2006 16:36:34 »
What happened to 'H'



Kinetic art is art that moves, or appears to move.

Kinetic energy, in scientific terms, is the energy possessed by a body by virtue of its motion, including the atomic level as in heat.

In kinetic art the motion may be physical, as in the kinetic sculpture of Naum Gabo and mobiles of Alexander Calder, or implied, as in the Op art paintings of Bridget Riley and others.

The kinetic art vogue peaked from the middle 1960s to the middle 1970s.



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