Microbiological analysis

Xem 1-9 trên 9 kết quả Microbiological analysis
  • Any one of the media evaluated can interchangeably be used as an obligatory isolation medium for the detection and enumeration of L. monocytogenes in foods, and for the detection in feed-stuffs. The L. monocytogenes specific plating media that were evaluated shorten the time of analysis and significantly reduce the work load. The detection of positive samples mostly after Half-Fraser enrichment, reduces the analysis time further, and makes it possible to skip the secondary enrichment. However, secondary enrichment cannot be totally left out, because samples with low levels of L.

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  • Difficulty in accessing ground water without disturbing ground-water flow patterns, chemistry, microbiology, and the physical and chemical makeup of formation materials has made accurate characterization of in situ ground-water conditions a very challenging task.

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  • Food samples collected under the Food Safety Act 1990 that may be the subject of legal proceedings need to be handled according to Code of Practice No. 7, ‘Sampling for Analysis or Examination’ (revised October 2000) [1] and the associated ‘Guidance on Food Sampling for Microbiological Examination’ [2]. The guidelines laid down in these documents....

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  • In conclusion, the results reported herewith show a significant relationship between epifluorescence microscopy and flow cytometry, but coefficients of variation were considerably lower for bacterial counts estimated by flow cytometry than epifluorescence microscopy. Generally, the use of flow cytometry in marine microbiology reduces the processing time of the sample and increases the number of processed samples.

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  • The objective of this thesis was to study the interactions of microbial activity, biocide usage and creation, and chemical changes in the papermaking process. The main focus was on oxidative biocide systems. In addition, new measurement and biocide production methods were applied to papermaking, and evaluated for the monitoring and control of the microbiological state and biocide usage. The measurement methods were based on portable handheld online equipments whereas the biocide production was based on electrochemical generation of biocides.

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  • At present, gamma irradiation has yet to be used in the processing of tissue allografts by all tissue banks. The Massachusetts General Hospital Tissue Bank inBoston—set up in 1990 by the pioneerDrHenry J.Mankin—is still a surgical tissue bank employing sterile procurement and processing techniques, but not gamma irradiation (Mankin was succeeded by Dr William Tomford). Similarly, in Latin America, the Musculoskeletal Tissue Bank in Latin Hospital, Buenos Aires, Argentina, set up by another famous pioneer Dr Ottolenghi (now run by Dr Musculo), is also a surgical tissue bank.

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  • Tuberculosis and sarcoidosis are chronic diseases that rarely occur concomitantly. Sarcoidosis is a multisystem granulomatous disorder characterized pathologically by the presence of non-caseating granulomas in involved tissues. Tuberculosis is infectious disease caused by Mycobacterium tuberculosis characterized by granulomas with caseous necrosis. Case presentation: We present a case of 43-year-old female refugee from Kosovo with microbiological confirmation of pulmonary tuberculosis and pulmonary and skin sarcoidosis at the same time.

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  • Intuitive Introduction to Wavelets 2.1 TECHNICAL HISTORY AND BACKGROUND The first questions from those curious about wavelets are: What is a wavelet? Who invented wavelets? What can one gain by using wavelets? 2.1.1 Historical Development Wavelets are sometimes referred to as the twentieth-century Fourier analysis. Wavelets exploit the multiresolution analysis just like microscopes do in microbiology. The genesis of wavelets began in 1910 when A. Haar proposed the staircase approximation to approximate a function, using the piecewise constants now called the Haar wavelets [1]....

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  • Laboratory data for peripheral blood lymphocyte subset analysis from ten patients with the diagnosis of PTB were examined retrospectively in the Immunology Unit at King Khalid University Hospital Riyadh. There were 4 female and 6 male patients with the mean age of 27 ± 6 years. Diagnosis of PTB was confirmed on clinical, radiological and microbiological evidence. Blood samples were collected prior to initiation of anti-tuberculosis therapy. None of the patients included in the study had any evidence of suffering from diabetes, HIV infection or autoimmune diseases.

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