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Author Topic: A-Z of AVIONICS  (Read 448572 times)

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #250 on: 29/11/2006 02:37:10 »
Jupiter
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #251 on: 29/11/2006 12:14:25 »
Klinefelter syndrome


Klinefelter syndrome is caused by an additional X chromosome in males (47,XXY). Clinical findings are nonspecific during childhood; thus, the diagnosis commonly is made during adolescence or adulthood in males who have small testes with hypergonadotropic hypogonadism and gynecomastia. Virtually all men with Klinefelter syndrome are infertile.
Epidemiology
Approximately one in 1,000 boys is born with an additional X chromosome-47,XXY, the karyotype that causes Klinefelter syndrome.
This karyotype is detected at or before birth in 10 percent of affected boys, and it is found during adulthood in 25 percent of affected men. Almost all men with a 47,XXY karyotype will be infertile; Klinefelter syndrome accounts for 3 percent of male infertility. Klinefelter syndrome is common in infertile men with oligospermia or azoospermia (5 to 10 percent).



ikod
« Last Edit: 22/04/2007 09:56:24 by iko »
 

Offline science_guy

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Re: A-Z of AVIONICS
« Reply #252 on: 29/11/2006 16:13:59 »
Ligaments.

How dare you post porn on this site iko! ::);)
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #253 on: 29/11/2006 17:57:46 »
MALTomas
(Mucosa Associated Lymphoid Tissue lymphomas)




A type of slow growing gastrointestinal lymphomas called MALTomas (Mucosa Associated Lymphoid Tissue) had been treated by standard chemotherapy (CHOP protocol...what a name for a chemotherapy!) until the end of the last century.
There was no suggestion about the origin of this clonal expansion of lymphoid cells in the gut. So the following action had to be blind and toxic.

But in the middle of the '80s two smart researchers from Australia, Barry J. Marshall and J. Robin Warren (Nobel Prize 2005) started their battle: they tried to demonstrate that a common bacteria, Helicobacter pylori, was the major cause of gastroduodenal ulcers in humans.
A standard antibiotic treatment was able to eradicate the bacteria,  allowing the ulcers (wounds in the mucosa) to heal spontaneously.

They initially got veggies and bananas at medical meetings, nevertheless they went on collecting more and more evidence to prove the "infectious theory" of peptic ulcer.  It had to be tough. Medicine is highly conservative for various reasons, and for a long time infectious diseases had been strictly defined: one bacteria, one disease.  Helicobacter pylori is very common in humans...but just few of us develop ulcers.   That was just enough to keep stalling any bright theory for years.
Finally H.p. eradication became the standard treatment.
Now there is growing evidence that persistent Helicobacter infection and continuous release of toxic substances for years, could be one of the causes of stomach cancer.
"...tumors: wounds that never healed..."

"...leukemia&lymphoma: infections never resolved..."
Shortly after it was found that the majority of the patients with MALT lymphomas were carrying H.p. and that eradication therapy alone was able to induce a spontaneous regression of the tumors. It was obviously too good to be true, so over the years some patients were found to be resistant to antibiotic treatment (2-3 weeks, no chemo!) and their lymphomas where identified as more advanced, with more chromosomal damage, unable to stop growing even when the bacterial stimuli were removed by eradication treatment.

iko NKSforum topic: "New cancer theory" 


« Last Edit: 22/04/2007 09:56:50 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #254 on: 29/11/2006 18:32:18 »
Nano

..........- is a prefix (symbol n) in the SI system of units denoting a factor of 10−9. It is often used in prefixing time and length units encountered in electronics and computer systems, like 30 nanoseconds (symbol ns) and 100 nanometres (nm). It was confirmed in 1960 and comes from the Greek νᾶνος, meaning dwarf.
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #255 on: 29/11/2006 18:39:07 »
Organic chemistry: The chemistry of carbon compounds!
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #256 on: 29/11/2006 19:15:16 »
Picod

..........- is a prefix (symbol p) in the SI system of units denoting a factor of 10E−12. It is often used in prefixing time and length units encountered in electronics and computer systems, like 30 picoseconds (symbol ps) and 100 picometres (pm).
"Pico" means tiny, little, and it comes from Spanish.

ikod  (Cut&Paste Master!)
« Last Edit: 23/06/2007 21:51:46 by iko »
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #257 on: 05/12/2006 18:58:22 »
...anybody queing?
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #258 on: 12/12/2006 00:22:29 »
...anybody queing?


Quasar
From Wikipedia, the free encyclopedia:
http://en.wikipedia.org/wiki/Quasar


Artist's impression of quasar GB1508................


A quasar (contraction of QUASi-stellAR radio source) is an astronomical source of electromagnetic energy, including light, which shows a very high redshift. The scientific consensus is that this high redshift is the result of Hubble's law. This implies that quasars are very distant. To be observable at that distance, the energy output of quasars must dwarf that of almost every known astrophysical phenomenon with the exception of comparatively short-lived supernovae and gamma-ray bursts. They may readily release energy in levels equal to the output of hundreds of average galaxies combined. The output of light is equivalent to one trillion suns.

In optical telescopes, most quasars look like single points of light (i.e. point source) although some are seen to be the centers of active galaxies.

Some quasars display rapid changes in luminosity, which implies that they are small (an object cannot change faster than the time it takes light to travel from one end to the other; but see quasar J1819+3845 for another explanation). The highest redshift currently known for a quasar is 6.4. [1]

Quasars are believed to be powered by accretion of material onto supermassive black holes in the nuclei of distant galaxies, making these luminous versions of the general class of objects known as active galaxies. No other currently known mechanism appears able to explain the vast energy output and rapid variability.

Knowledge of quasars is advancing rapidly. As recently as the 1990's there was no clear consensus as to their origin.
 

Offline ukmicky

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Re: A-Z of AVIONICS
« Reply #259 on: 12/12/2006 03:19:52 »
And i suppose you took that one yourself
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #260 on: 12/12/2006 04:18:52 »
RFLP (restriction fragment length
polymorphism)
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #261 on: 12/12/2006 05:23:51 »
And i suppose you took that one yourself

Boy, I am just so pleased that my old Brownie camera still worked at the end of my very long poll from Earth.  :)
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #262 on: 12/12/2006 05:26:32 »
Sextant


A sextant is a measuring instrument generally used to measure the angle of elevation of a celestial object above the horizon. Making this measurement is known as sighting the object, shooting the object or taking a sight. The angle, and the time when it was measured, can be used to calculate a position line on a nautical or aeronautical chart. A common use of the sextant is to sight the sun at noon to find one's latitude. See celestial navigation for more discussion. Held horizontally, the sextant can be used to measure the angle between any two objects, such as between two lighthouses, which will, similarly, allow for calculation of a line of position on a chart.

The scale of a sextant has a length of 1/6 of a full circle; 60°, hence the sextant's name. An octant is a similar device with a shorter scale, (1/8 of a circle, or 45°) and a quadrant is one with a longer scale (90°).

Sir Isaac Newton invented the principle of the doubly reflecting navigation instrument, but never published it. Two men independently rediscovered the sextant around 1730: John Hadley (1682-1744), an English mathematician, and Thomas Godfrey (1704-1749), an American inventor. The sextant, along with the octant, replaced the astrolabe as the main instruments for navigation.

http://en.wikipedia.org/wiki/Sextant


 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #263 on: 12/12/2006 05:50:35 »
Telophase
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #264 on: 12/12/2006 07:06:21 »
Uranium
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #265 on: 12/12/2006 18:06:00 »
Wernicke encephalopathy



Wernicke encephalopathy is a serious disorder caused by thiamine (vitamin B-1) deficiency. Dr Carl Wernicke, a Polish neurologist, described it in 1881 as a triad of acute mental confusion, ataxia, and ophthalmoplegia. Korsakoff amnestic syndrome is a late neuropsychiatric manifestation of Wernicke encephalopathy with memory loss and confabulation; hence, the condition is referred to as Wernicke-Korsakoff syndrome or psychosis. It is most often seen in alcoholics, but it can be seen in disorders associated with malnutrition and also in patients on long-term hemodialysis or with AIDS. The disease is frequently unrecognized and is likely more prevalent than commonly supposed.
...
Emergency Department Care: Wernicke encephalopathy must be viewed as a medical emergency, even if other competing diagnoses of CNS processes are being considered. Because the condition is potentially reversible, institution of treatment is indicated in patients exhibiting any combination of symptoms and signs, particularly if the patient is in a high-risk population. Onset of the disease may be acute, subacute, or chronic.

Although as little as 2 mg of thiamine may be enough to reverse symptoms, the dose of thiamine required to prevent or treat Wernicke encephalopathy in most alcoholic patients may be as high as greater than 500 mg given once or twice daily parenterally. Thiamine solution should be fresh, since old solutions may be inactive. Ataxia and acute confusional state may resolve dramatically, although improvement may not be noted for days or months.

http://www.emedicine.com/emerg/topic642.htm



« Last Edit: 22/04/2007 09:57:27 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #266 on: 12/12/2006 22:41:12 »
How about a 'v ' ?


Verruca

Plantar warts (verrucę pedis; VP - also commonly referred to as a verruca) are warts caused by the human papilloma virus (HPV). They are small lesions that appear on the sole of the foot (hence the name, from Latin planta pedis, the sole of the foot) and are typically cauliflower-esque in appearance. They may have small black specks within them that ooze blood when the surface is shaved; these are abnormal capillaries. Though plantar wart refers specifically to HPV infection on the sole of the foot, infection by the virus is possible anywhere on the body and common especially on the palm of the hand, where the appearance of the wart is often exactly as described above for plantar warts. Due to pressure on the soles of the feet, a layer of hard skin forms over the wart. A plantar wart may or may not be painful. It can be spread in communal showers, around swimming pools, sharing shoes, etc.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #267 on: 12/12/2006 22:47:15 »
Xygote

Neilepedia reference:


Word created to fill in a gap at the ' X' stage in an A-Z thread of science stuff !


 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #268 on: 13/12/2006 03:55:35 »
HEE HEE HEE! LOL!

YOUNG, John (astronaut)
 

Offline JimBob

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Re: A-Z of AVIONICS
« Reply #269 on: 13/12/2006 04:34:55 »
NEIL !!!!

No need for a fill for "X" - Xenon, an elemental gas, will work just fine and there are quite a few other science things. I'll try to think when I wake in the AM to fill in a partial list.

You can have the credit for Zygote.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #270 on: 13/12/2006 05:03:51 »
NEIL !!!!

No need for a fill for "X" - Xenon, an elemental gas, will work just fine and there are quite a few other science things. I'll try to think when I wake in the AM to fill in a partial list.

You can have the credit for Zygote.

Sir....I am honored!!..It's possible that some of the words you compile may already have been used here..but I suppose some  'letters ' will demand repetition of certain words.

Thanks Jimmy Boy !!
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #271 on: 13/12/2006 05:36:19 »
Absolute Zero- Zero Kelvin (-273*C)
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #272 on: 13/12/2006 15:08:01 »
Barium meal






Preprepared Barium Sulfate suspension for oral consumption

A barium meal, also known as an upper gastrointestinal series is a procedure in which radiographs of the esophagus, stomach and duodenum are taken after barium sulfate is ingested by a patient. Barium meals are useful in the diagnosis of structural and motility abnormalities of the foregut.

There are two varieties of barium meal, these being single and double contrast meals. A single contrast meal uses only barium, a radiopaque (or positive) contrast medium, to image the upper gastrointestinal tract while a double contrast meal uses barium as well as a radiolucent (or negative) contrast medium such as room air, nitrogen, or carbon dioxide. The double contrast meal has the advantage of demonstrating mucosal details and is much more useful as a diagnostic test allowing the detection of small mucosal lesions such as diverticula or polyps.
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #273 on: 13/12/2006 16:45:18 »
OH YUCK!! I HATE THOSE THINGS!

Chirality- The ability of an molecule to exist in two mirror-image forms, with different properties.
 

Offline iko

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« Last Edit: 22/04/2007 09:57:54 by iko »
 

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Re: A-Z of AVIONICS
« Reply #274 on: 13/12/2006 18:09:44 »

 

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