INDEX common cold

A number of virus diseases and virus related topics are described in this encyclopedia. Check alphabetical index for antiviral drugs, cancer research, cluckenpox, common cold coxsackie virus, dengue (breakbone fever), hepatitis, infectious mononucleosis, influenza, measles, mumps, Norwalk virus, poliomyelitis, rabies. Rift Valley fever, vaccinia, virus diseases (plants), and yellow fever. 

The long-standing interest in the properties of L-ascorbic acid is manifested by the fact that 1146 references related to vitamin C are listed for year 2000 in the PUB MED index in the Internet. The most popular use of L-ascorbic acid is for prevention and treatment of the common cold, but this role remains controversial. In a recent review, the authors conclude that the long-term daily supplementation with large doses of vitamin C does not appear to prevent colds, but there is a modest therapeutic effect on the duration of cold symptoms.369... 

Flavan 4.44), which is the parent of innumerable colouring substances in fruits and flowers, is slightly active against 20 strains of common-cold virus in plaque tests. The highly lipophilic 4, 6-dichloro-derivative is much more active. How to administer such a water-insoluble substance effectively to human volunteers presented a problem but it does inhibit RNA synthesis in the parasitized cell, and the therapeutic index (mouse) is exceptionally high (Bauer etal., 1981). 

A study by Porton s consultant psychologist in 1960/1961 on the personality and intelligence of over 500 service volunteers found two soldiers who had arrived at Porton by mistake because they had believed that they were going to the Common Cold Research Unit in Salisbury . A Porton member of staff later recorded similar instances on a series of card indexes for the period from 1964 to 1977. Although not representative, this provides hard evidence that at least some of the servicemen had come to Porton in the belief they would be assisting in common cold research, or had confused... 

Poly(vinyl acetate) is too soft and shows excessive cold flow for use in moulded plastics. This is no doubt associated with the fact that the glass transition temperature of 28°C is little above the usual ambient temperatures and in fact in many places at various times the glass temperature may be the lower. It has a density of 1.19 g/cm and a refractive index of 1.47. Commercial polymers are atactic and, since they do not crystallise, transparent (if free from emulsifier). They are successfully used in emulsion paints, as adhesives for textiles, paper and wood, as a sizing material and as a permanent starch . A number of grades are supplied by manufacturers which differ in molecular weight and in the nature of comonomers (e.g. vinyl maleate) which are commonly used (see Section 14.4.4)... 

Properties Colorless liquid.. D 1.20 (20/4C) refr index 1.4903 (25C) bp 145-147C (5 mm Hg). Soluble in the common organic solvents including alcohol, heptane, benzene, and toluene insoluble in cold water, but hydrolyzes in hot water Derivation Reaction of tetrabutyltin with dibutyltin chloride. 

In Chapter 11, we explained the concept of winddull factors. We said that the heat transfer rates from your body to the surroundings increase on a cold, windy day. Simply stated, you lose more body heat on the cold, windy day than you do on a calm day. The windchill index accounts for the combined effect ofwind speed and the air temperature. It accoimts for the additional body heat loss that occurs on a cold, windy day. The windchill values are determined empirically, and a common correlation used to determine the windchill index is... 

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