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Author Topic: A-Z of AVIONICS  (Read 448559 times)

Offline iko

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Re: A-Z of AVIONICS
« Reply #300 on: 17/12/2006 21:54:10 »
Delta-aminolaevulinic acid dehydratase


Lead poisoning


Lead has no known biological role in the body. The toxicity comes from its ability to mimic other biologically important metals, the most notable of which are calcium, iron and zinc. Lead is able to bind to and interact with the same proteins and molecules as these metals, but after displacement, those molecules function differently and fail to carry out the same reactions, such as in producing enzymes necessary for certain biological processes.

Most lead poisoning symptoms are thought to occur by interfering with an essential enzyme Delta-aminolevulinic acid dehydratase, or ALAD. ALAD is a zinc-binding protein which is important in the biosynthesis of heme, the cofactor found in hemoglobin.
Genetic mutations of ALAD cause the disease porphyria, a disease which was highlighted in the movie The Madness of King George.
Lead poisoning is sometimes mistaken for porphyria but the distinction is that lead poisoning usually causes anemia while true porphyria does not.


more from Wikipedia clicking here:   http://en.wikipedia.org/wiki/Lead_poisoning

« Last Edit: 22/04/2007 09:52:16 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #301 on: 17/12/2006 23:23:27 »
Earth ........ often referred to as the Earth, Terra, the World or Planet Earth) is the third most distant planet in the solar system from the Sun, and the fifth largest planet. It is also the largest of its planetary system's terrestrial planets, making it the largest solid body in the solar system, and it is the only place in the universe known to humans to support life. It is also the densest planet in the solar system. Widely accepted scientific evidence indicates that the Earth was formed around 4.57 billion years ago[1] and its natural satellite, the Moon, was orbiting it shortly thereafter, around 4.53 billion years ago.

The outer surface is divided into several tectonic plates that gradually migrate across the surface over geologic time spans. The interior of the planet remains active, with a thick layer of convecting yet solid mantle and an iron core that generates a magnetic field. Its atmospheric conditions have been significantly altered by the presence of life forms, which create an ecological balance that modifies the surface conditions. About 71% of the surface is covered in salt-water oceans, and the remainder consists of continents and islands.

There is significant interaction between the Earth and its space environment. The relatively large moon provides ocean tides and has gradually modified the length of the planet's rotation period. A cometary bombardment during the early history of the planet is believed to have played a role in the formation of the oceans. Later, asteroid impacts are understood to have caused significant changes to the surface environment. Long term periodic changes in the orbit of the planet may also be responsible for the ice ages that have covered significant portions of the surface in glacial sheets.









 

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Re: A-Z of AVIONICS
« Reply #302 on: 17/12/2006 23:31:20 »
Faradize- To treat or stimulate with faradic current.
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #303 on: 17/12/2006 23:57:51 »
Geographic tongue
Geniustrophic tongue



Geographic tongue is a relatively common tongue problem that normally responds to topical steroids.  We do not know the cause of geographic tongue and treatment does not permanently cure it.  It does however, provide significant improvement of symptoms.

The safest treatment is topical Lidex gel applied about 4 times daily, just after meals and at bedtime.  A dentist should be able to prescribe it.
There are stronger steroids available but they have side effects.  Some patients with this problem have Zinc deficiency and could have zinc blood levels tested.  If zinc deficiency is found, zinc supplementation really helps.

from:  http://www.tambcd.edu/DentalCE/askdoc/html/geographic_tongue.html


« Last Edit: 22/04/2007 09:53:29 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #304 on: 19/12/2006 03:15:22 »
A cerebral hemisphere (hemispherium cerebrale) is defined as one of the two regions of the brain that are delineated by the body's median plane. The brain can thus be described as being divided into left and right cerebral hemispheres. Each of these hemispheres has an outer layer of grey matter called the cerebral cortex that is supported by an inner layer of white matter. The hemispheres are linked by the corpus callosum, a very large bundle of nerve fibers, and also by other smaller commissures, including the anterior commissure, posterior commissure, and hippocampal commissure. These commissures transfer information between the two hemispheres to coordinate localized functions. The architecture, types of cells, types of neurotransmitters and receptor subtypes are all distributed among the two hemispheres in a markedly asymmetric fashion. However, it must be noted that, while some of these hemispheric distribution differences are consistent across human beings, or even across some species, many observable distribution differences vary from individual to individual within a given species.



The human brain as viewed from
 above, showing the cerebral
hemispheres. The anterior aspect
(front) of the brain is to the right.

 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #305 on: 19/12/2006 03:37:13 »
inorganic chemistry!
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #306 on: 19/12/2006 12:16:20 »
Jarish-Herxheimer reaction


After antibiotic therapy of Lyme disease

...
The Jarish Herxheimer reaction is seen when antibiotics are having a therapeutic effect. There can be a worsening in the symptoms, which may include the periostitis, and the psychiatric and cognitive symptoms. Some patients become very impulsive, aggressive, depressed, and suicidal during a Herxheimer reaction and may require close monitoring during these times.
Progression of symptoms is a significant item. After working with these patients, it is clear there are common patterns in which different symptoms appear in a different sequence. This item is checked when the symptoms are appearing in a sequence that is seen in the progression of Lyme disease, i.e.: it begins with a tick bite, then a bulls eye rash associated with a flu like illness, then there may be some of the disseminated symptoms such as the joint pain. The cranial nerve symptoms may be seen. Later there is the development of the cognitive symptoms that gradually increase over time. Then the psychiatric symptoms develop later in the course of the illness with an intensification of the cognitive and neurological symptoms. Not every stage is seen in all patients. Although many similarities exist between patients, no two patients display the exact same symptoms; and there are many variants in the manner in which the disease presents. There is some evidence that different clusters of symptoms are associated with different strains of the bacteria, and there are many variants in the manner in which this disease presents.
...
from:  http://www.mentalhealthandillness.com/tnaold.html




« Last Edit: 22/04/2007 09:53:59 by iko »
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #307 on: 19/12/2006 16:10:30 »
Lipoprotein
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #308 on: 19/12/2006 23:21:31 »
Koch Robert   (1843-1910)
Nobel Prize in Physiology or Medicine 1905


« Last Edit: 22/04/2007 09:54:21 by iko »
 

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Re: A-Z of AVIONICS
« Reply #309 on: 20/12/2006 01:43:57 »
 Mendeleev ,Dimitri:

(Russian: (8 February 1834 [O.S. 27 January] in Tobolsk 2 February 1907 [O.S. 20 January] in Saint Petersburg), was a Russian chemist. He is credited as being the primary creator of the first version of the periodic table of elements. Unlike other contributors to the table, Mendeleev predicted the properties of elements yet to be discovered.




 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #310 on: 20/12/2006 01:49:14 »
NUMBER THEORY= the study of whole numbers (integers).
 

Offline Mjhavok

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Re: A-Z of AVIONICS
« Reply #311 on: 20/12/2006 03:31:02 »
Oligodendrocyte
 

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Re: A-Z of AVIONICS
« Reply #312 on: 20/12/2006 03:38:15 »
Protein immunology = The use antibodies to determine the relationships of species. Antibodies specific to one spicies have variable reactions with others depending on their genetic similarity.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #313 on: 20/12/2006 17:39:46 »
QUARKS

In particle physics, quarks are one of the two basic constituents of matter (the other Standard Model fermions are the leptons).

Antiparticles of quarks are called antiquarks. Quarks are the only fundamental particles that interact through all four of the fundamental forces. The word was borrowed by Murray Gell-Mann from the book Finnegans Wake by James Joyce, where seabirds give "three quarks", akin to three cheers (probably onomatopoetically imitating a seabird call, like "quack" for ducks).

The names of quark flavours (up, down, strange, charm, bottom, and top) were also chosen arbitrarily based on the need to name them something that could be easily remembered and used.

An important property of quarks is called confinement, which states that individual quarks are not seen because they are always confined inside subatomic particles called hadrons (e.g., protons and neutrons); an exception is the top quark, which decays so quickly that it does not hadronize, and can therefore be observed more directly via its decay products. Confinement began as an experimental observation, and is expected to follow from the modern theory of strong interactions, called quantum chromodynamics (QCD). Although there is no mathematical derivation of confinement in QCD, it is easy to show using lattice gauge theory




These are the 6 quarks and their
 most likely decay modes. Mass
decreases moving from right to left.
 

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Re: A-Z of AVIONICS
« Reply #314 on: 20/12/2006 17:53:14 »
Radiometric dating = Fiinding a rocks age using the decay rate of radioactive elements in the sample.
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #315 on: 20/12/2006 19:30:43 »
STI571 - Gleevec - Imatinib Mesilate

  by Dr.Brian Druker  (Univ. Oregon USA)



..."The most important drug
   in human oncology in the
   last twenty years!"
« Last Edit: 22/04/2007 09:55:09 by iko »
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #316 on: 20/12/2006 20:17:28 »
Tuberculosis (abbreviated as TB for Tubercle Bacillus) is a common and deadly infectious disease caused by the bacterium Mycobacterium tuberculosis, which most commonly affects the lungs (pulmonary TB) but can also affect the central nervous system, lymphatic system, circulatory system, genitourinary system, bones and joints.

Over one-third of the world's population now has the TB bacterium in their bodies and new infections are occurring at a rate of one per second.[1] Not everyone who is infected develops the disease and asymptomatic latent TB infection is most common. However, one in ten latent infections will progress to active TB disease which, if left untreated, will kill more than half of its victims. In 2004, 14.6 million people had active TB and there were 8.9 million new cases and 1.7 million deaths,[1] mostly in developing countries. A rising number of people in the developed world contract tuberculosis because their immune systems are compromised by immunosuppressive drugs, substance abuse, or HIV/AIDS.

The rise in HIV infection levels and the neglect of TB control programs have caused a resurgence of tuberculosis, and drug-resistant strains of TB are also emerging.[2] The World Health Organization declared TB a global health emergency in 1993, and the Stop TB Partnership proposed a Global Plan to Stop Tuberculosis which aims to save 14 million lives between 2006 and 2015.[3]
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #317 on: 20/12/2006 20:21:53 »
Ultra Violet Lights
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #318 on: 21/12/2006 17:40:29 »
Vernacular refers to the native language of a country or locality. In general linguistics, it is used to describe local languages as opposed to linguae francae, official standards or global languages. It is sometimes applied to nonstandard dialects of a global language.

In previous centuries scholarly work in Western Europe was typically written in Latin, so the works written in a native language (such as Italian or German) were said to be in the vernacular.

The vernacular is also often contrasted with a liturgical language (in Linguistics, the relationship between these "High" and "Low" languages or varieties of a language is referred to as diglossia). For example, until the 1960s, Latin Rite Roman Catholics held masses in Latin rather than in local vernacular language, to this day the Coptic Church holds liturgies in Coptic; though parts of mass are read in Amharic, the Ethiopian Orthodox Church holds liturgies in Ge'ez, etc. The Reformation was spread by the publication of Bibles and other religious writings in the vernacular, and the reforms of the Second Vatican Council permitted the use of vernacular liturgies in Roman Catholicism.

Similarly, in Hindu culture, traditionally religious or scholarly works were written in Sanskrit long after its use as a spoken language. With the rise of the bhakti movement from the 1100s onwards, religious works started being created in Tamil, Hindi, Kannada, Telugu and many other Indian languages throughout the different regions of India. For example, the Ramayana, one of Hinduism's sacred epics in Sanskrit had vernacular versions such as Ramacharitamanasa, a Hindi version of the Ramayana by the 16th century poet Tulsidas, and Kambaramayanam in Tamil by the poet Kamban.
Contents
 

Offline iko

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Re: A-Z of AVIONICS
« Reply #319 on: 21/12/2006 19:10:15 »
Wilson's disease

Wilson's disease


Wilson's Disease is a rare autosomal recessive disorder of copper transport, resulting in copper accumulation and toxicity to the liver and brain. Liver disease is the most common symptom in children; neurological disease is most common in young adults. The cornea of the eye can also be affected: the 'Kayser-Fleischer ring' is a deep copper-colored ring at the periphery of the cornea, and is thought to represent copper deposits.
The gene for Wilson's disease (ATP7B) was mapped to chromosome 13. The sequence of the gene was found to be similar to sections of the gene defective in Menkes disease, another disease caused by defects in copper transport. The similar sequences code for copper-binding regions, which are part of a transmembrane pump called a P-type ATPase that is very similar to the Menkes disease protein.
A homolog to the human ATP7B gene has been mapped to mouse chromosome 8, and an authentic model of the human disease in rat is also available (called the Long-Evans Cinnamon [LEC][ rat). These systems will be useful for studying copper transport and liver pathophysiology, and should help in the development of a therapy for Wilson disease.

from:   http://www.ncbi.nlm.nih.gov/disease/Wilson.html


« Last Edit: 22/04/2007 09:55:52 by iko »
 

Offline JimBob

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Re: A-Z of AVIONICS
« Reply #320 on: 21/12/2006 22:49:21 »
Xerothermic

Said of a hot, dry climate.

 ::)
 

Offline chris

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Re: A-Z of AVIONICS
« Reply #321 on: 22/12/2006 23:42:46 »
Yersinia - Yersinia are a class of bacilli linked to a form of food poisoning and also bubonic plague (Y. pestis).
 

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Re: A-Z of AVIONICS
« Reply #322 on: 23/12/2006 00:02:20 »

In broad terms, the zenith is the direction pointing directly above a particular location (perpendicular, orthogonal). Since the concept of being above is itself somewhat vague, scientists define the zenith in more rigorous terms. Specifically, in astronomy, geophysics and related sciences (e.g., meteorology), the zenith at a given point is the local vertical direction pointing away from direction of the force of gravity at that location.
 

Offline neilep

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Re: A-Z of AVIONICS
« Reply #323 on: 23/12/2006 00:02:46 »
Absinthe (also absinth) (IPA English: [ˈbsɪnθ] IPA French: [ap.sɛ̃t]) is a distilled, highly alcoholic, anise-flavored spirit derived from herbs including the flowers and leaves of the medicinal plant Artemisia absinthium, also called grand wormwood. Although it is sometimes incorrectly called a liqueur, absinthe is not bottled with added sugar and is therefore classified as a liquor or spirit.[1]

Absinthe is often referred to as la Fe Verte ('The Green Fairy') because of its coloring typically pale or emerald green, but sometimes clear or in rare cases rose red. Due to its high proof and concentration of oils, absintheurs (absinthe drinkers) typically add three to five parts ice-cold water to a dose of absinthe, which causes the drink to turn cloudy (called 'louching'); often the water is used to dissolve added sugar to decrease bitterness. This preparation is considered an important part of the experience of drinking absinthe, so much so that it has become ritualized, complete with special slotted absinthe spoons and other accoutrements. Absinthe's flavor is similar to anise-flavored liqueurs, with a light bitterness and greater complexity imparted by multiple herbs.

Absinthe originated in Switzerland as an elixir but is better known for its popularity in late 19th and early 20th century France, particularly among Parisian artists and writers whose romantic associations with the drink still linger in popular culture. In its heyday, the most popular brand of absinthe worldwide was Pernod Fils. At the height of this popularity, absinthe was portrayed as a dangerously addictive, psychoactive drug; the chemical thujone was blamed for most of its deleterious effects. By 1915, it was banned in a number of European countries and the United States. Even though it was vilified, no evidence shows it to be any more dangerous than ordinary alcohol.[2] A modern absinthe revival began in the 1990s, as countries in the European Union began to reauthorize its manufacture and sale.





A reservoir glass filled with
 a naturally colored verte next
 to an absinthe spoon.



I realise this may not be strictly science but I thought I might get away with it based on chemistry and the effect on biology !!
 

Offline Karen W.

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Re: A-Z of AVIONICS
« Reply #324 on: 23/12/2006 02:54:33 »
Sounds Fair to me!

Black Dwarf = A dead Star that has exhausted all of it's energy.
 

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Re: A-Z of AVIONICS
« Reply #324 on: 23/12/2006 02:54:33 »

 

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