نتایج جستجو برای: pure substances
تعداد نتایج: 149540 فیلتر نتایج به سال:
Pollen allergy is characterized by a T(H)2-biased immune response to pollen-derived allergens. However, pollen-exposed epithelia do not encounter pure allergen but rather a plethora of protein and non-protein substances. We demonstrated that pollen liberate lipids with chemical and functional similarities to leukotriens and prostaglandins--the pollen associated lipid mediators (PALMs). To date,...
Symbiobacterium thermophilum is a syntrophic bacterium whose growth depends on coculture with a Bacillus sp. Recently, we discovered that CO(2) generated by Bacillus is the major inducer for the growth of S. thermophilum; however, the evidence suggested that an additional element is required for its full growth. Here, we studied the self-growth-inhibitory substances produced by S. thermophilum....
There is strong evidence that the composition of cerebrospinal fluid (CSF) influences brain development, neurogenesis, and behavior. The bidirectional exchange of CSF and interstitial fluid (ISF) across the ependymal and pia-glial membranes is required for these phenomena to occur. Because ISF surrounds the parenchymal compartment, neuroactive substances in the CSF and ISF can influence neurona...
چکیده ندارد.
Meconium (I), the characteristic first stool of the infant, is a viscid, sticky, odorless, greenish brown to black material, which is regularly seen during the 5th month of fetal development. The amount excreted after birth varies from 60 to 200 gm. It is generally considered to be an accumulation of debris consisting of desquamated cells of the alimentary tract and skin, lanugo, fatty material...
normal 0 false false false en-us x-none ar-sa dear editor i read with interest the study conducted by karrari and colleagues regarding “iranian crystal a misunderstanding of the crystal-meth” published in your journal. [ 1 ] in this study, the authors have explained that the pattern of substances of abuse is varied in different parts of the world , also in iran, and the main ingredient of stree...
When multiplying actively in serum, fibroblasts are in a condition of survival, not of cultivation, for they do not synthetize protoplasm from substances contained in the medium. They are able to utilize only the nitrogenous material stored in the tissue itself. The distinction between survival of tissue and active growth is an important one. Innumerable errors in the interpretation of the expe...
Increasingly, products containing humic substances are appearing in the turf industry market claiming to reduce water and fertilizer use by increasing soil moisture and nutrient availability. Humic acid is the most common humic substance that has been studied, but results have been highly variable (Cooper et al.; 1998).The response of humic acid is difficult to interpret due to confounding effe...
Chein-I Chang, FELLOW SPIE University of Maryland Baltimore County Remote Sensing Signal and Image Processing Laboratory Department of Computer Science and Electrical Engineering Baltimore, Maryland 21250 E-mail: [email protected] Abstract. MR images and remotely sensed images share similar image structures and characteristics because they are acquired remotely as image sequences by spectral chan...
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