نتایج جستجو برای: auramine
تعداد نتایج: 202 فیلتر نتایج به سال:
Six diagnostic methods (Giemsa staining, Ziehl-Neelsen staining, auramine-rhodamine staining, Sheather's sugar flotation, an indirect immunofluorescence procedure, and a modified concentration-sugar flotation method) for the detection of Cryptosporidium spp. in stool specimens were compared on the following attributes: diagnostic yield, cost to perform each test, ease of handling, and ability t...
BACKGROUND Tuberculosis (TB) remains an important public health problem worldwide. Our objective was to estimate the economic and health care impact of the introduction of an early diagnosis tecnique of TB, the Xpert MTB/RIF® assay (Xpert). METHODS The savings was estimated on the basis of reduction in the time of TB hospitalization at avoid the false-negative (FN) and false-positive (FP) TB ...
This study describes the design and evaluation of a portable bright-field and fluorescence microscope that can be manufactured for $240 USD. The microscope uses a battery-operated LED-based flashlight as the light source and achieves a resolution of 0.8 microm at 1000x magnification in fluorescence mode. We tested the diagnostic capability of this new instrument to identify infections caused by...
Photophysics of Auramine-O: electronic structure calculations and nonadiabatic dynamics simulations.
Diphenylmethane dyes are very useful photoinduced molecular rotors; however, their photophysical mechanisms are still elusive until now. In this work, we adopted combined static electronic structure calculations (MS-CASPT2//CASSCF) and trajectory-based surface-hopping dynamics simulations (OM2/MRCI) to study the S1 excited-state relaxation mechanism of a representative diphenylmethane dye Auram...
Tuberculosis and other mycobacteriosis are serious illnesses which control is based primarily in early diagnosis. In addition to clinical suspicion, a fundamental support in diagnosis is the staining of clinical samples with gender-specific colors. However, these techniques are not very sensitive so many times we must await the results of culture, which can take up to 2 months. We have develope...
This article presents the synthesis and sorption characteristics of novel microspheres based on 4-vinylbenzene chloride (VBCl) with divinylbenzene (DVB) or ethylene glycol dimethylacrylate (EGDMA). To confirm chemical structure homo- co-polymers attenuated total reflectance, Fourier transform infrared spectroscopy (ATR-FTIR) was used. The presence characteristic functional groups (−OH, −CH, −CH...
During a 7-month period, 2,252 fecal samples submitted for routine microbiological examination from 1,621 patients were screened for Cryptosporidium oocysts by the auramine staining method with Kinyoun acid-fast stain as the confirmatory stain. Cryptosporidium oocysts were detected in fecal samples from 19 (1.2%) patients, 18 of whom had gastroenteritis. Diarrheic stools from 14 of these 18 pat...
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