منابع مشابه
Semiquantitation of bacteria in sputum gram stains.
In many clinical laboratories, bacteria seen in Gram-stained sputum smears are reported semiquantitatively, using a three- or four-category scale consisting of ratings such as numerous, moderate, rare, and none seen. The consistency with which these categories are assigned was evaluated by repeatedly presenting coded smears to seven experienced microbiology technologists. Technologists rated th...
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We present a parallel algorithm for the QR decomposition with column pivoting of a sparse matrix by means of Modiied Gram-Schmidt orthogonalization. Nonzero elements of the matrix M to decompose are stored in a one-dimensional doubly linked list data structure. A strategy to reduce ll-in is discussed to get memory savings and decrease the computation times. As an application of QR decomposition...
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We demonstrate the feasibility of using qPCR on DNA extracted from vaginal Gram stain slides to estimate the presence and relative abundance of specific bacterial pathogens. We first tested Gram stained slides spiked with a mix of 10(8) cfu/ml of Escherichia coli and 10(5) cfu/ml of Lactobacillus acidophilus. Primers were designed for amplification of total and species-specific bacterial DNA ba...
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Chemical studies have been carried out on the interaction of DNA with uranyl salts. The effect of variations in pH, salt concentration, and structural integrity of the DNA on the stoichiometry of the salt-substrate complex have been investigated. At pH 3.5 DNA interacts with uranyl ions in low concentration yielding a substrate metal ion complex with a UO(2) (++)/P mole ratio of about (1/2) and...
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On one point an important difference of opinion may exist between medico-legal workers: should a positive chemical test, in the absence of finding spermatozoa under the microscope, be accepted a& evidence of semen ? Some are in favour of doing so (Bagchi, 1937), others against (Owens, 1935; Thomas, 1937; Kamath, 1938; Glaister, 1938; McNally, 1939; Modi, 1940; Rhodes, 1940) and yet others appea...
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ژورنال
عنوان ژورنال: Journal of Infectious Diseases
سال: 1922
ISSN: 0022-1899,1537-6613
DOI: 10.1093/infdis/31.5.480