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A-Z of AVIONICS
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A-Z of AVIONICS
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Mjhavok
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Re: A-Z of AVIONICS
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Reply #240 on:
27/11/2006 10:59:36 »
ATP
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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")
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Reply #242 on:
27/11/2006 18:39:37 »
Cod
e (genetic)
http://www.codefun.com/Images/Genetic/ComputerSymbols9d.jpg
http://fig.cox.miami.edu/~cmallery/150/gene/c7.17.26.summary.jpg
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Reply #243 on:
27/11/2006 22:38:36 »
D
iuretic
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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Reply #244 on:
27/11/2006 23:18:07 »
Erythromycin
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Re: A-Z of AVIONICS
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Reply #245 on:
28/11/2006 13:21:57 »
Evolution
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Reply #246 on:
28/11/2006 13:25:14 »
Fossil Record:
the Evidence of past life preserved in a fossil form.
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Reply #247 on:
28/11/2006 19:02:28 »
G
arlic antifungal intravenous preparations
(
Allium sativum
)
http://www.foodmuseum.com/images/garlic1.jpg
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.
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Re: A-Z of AVIONICS
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Reply #248 on:
28/11/2006 22:24:11 »
Hydrophobic interactions
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Re: A-Z of AVIONICS
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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
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Reply #250 on:
29/11/2006 02:37:10 »
Jupiter
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Reply #251 on:
29/11/2006 12:14:25 »
K
linefelter syndrome
http://www.aafp.org/afp/20051201/2259_f1.jpg
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).
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Last Edit: 22/04/2007 09:56:24 by iko
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Re: A-Z of AVIONICS
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Reply #252 on:
29/11/2006 16:13:59 »
Ligaments.
How dare you post porn on this site iko! [
][
]
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Reply #253 on:
29/11/2006 17:57:46 »
M
ALTomas
(Mucosa Associated Lymphoid Tissue lymphomas)
http://pleiad.umdnj.edu/~dweiss/lo_grd_diff/graphics/maltomalehi504x360.jpg
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"
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Last Edit: 22/04/2007 09:56:50 by iko
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Re: A-Z of AVIONICS
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Reply #254 on:
29/11/2006 18:32:18 »
N
ano
..........- 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.
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Re: A-Z of AVIONICS
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Reply #255 on:
29/11/2006 18:39:07 »
Organic chemistry: The chemistry of carbon compounds!
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Reply #256 on:
29/11/2006 19:15:16 »
P
ico
d
..........- 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.
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Reply #257 on:
05/12/2006 18:58:22 »
...anybody
q
ueing?
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Re: A-Z of AVIONICS
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Reply #258 on:
12/12/2006 00:22:29 »
Quote from: iko on 05/12/2006 18:58:22
...anybody
q
ueing?
Q
uasar
From Wikipedia, the free encyclopedia:
http://en.wikipedia.org/wiki/Quasar
Artist's impression of quasar GB1508................ [ Invalid Attachment ]
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.
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Re: A-Z of AVIONICS
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Reply #259 on:
12/12/2006 03:19:52 »
And i suppose you took that one yourself
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