نتایج جستجو برای: specimen
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In recent years a subject which has received little attention is the question of motion of the specimen relative to the objective lens of the electron microscope. In ordinary electron microscopy, where resolutions better than 30 A are not required, one can tolerate drift of the object (during a 5 second exposure of the plate) of perhaps 1 to 3 A per second, while for high resolution microscopy ...
The Compliance and Interoperability Working Group of the Genomic Standards Consortium facilitates the establishment of a community of experts and the development of recommendations to describe genomic data and associated information. Here we present our ongoing conation to harmonise the reporting of contextual plant specimen data associated with genomics and functional genomics. This commentary...
is started on a new antibiotic, always take an “antibiotic timeout” and reassess the patient after the first 48 to 72 hours of antimicrobial therapy to assure that the patient has responded to the antimicrobial therapy, as many of the uropathogens are multidrug-resistant. A urinalysis and culture should be collected based on the patient’s symptoms and not solely based on the urine’s characteris...
INTRODUCTION Whipple's Pancreaticoduodenectomy has increasingly been used as an appropriate resectional procedure for tumors of the periampullary region which are pancreatic, periampullary, ampullary and biliary tumors. Our aim was to study the distribution and histopathologic features of these tumors and to examine local trends of periampullary neoplasms resected with a PD. METHODS A descrip...
analysis of PCR products amplified from five strains of spotted fever group Rickettsiae with Rr with Rr 190. synthase gene comparison, a new tool for phylogenetic analysis, and its application for the Rickettsiae. To the Editor: As virologists whose specialties include diagnostic electron microscopy (EM), we read with interest the discussion on bioterrorism scenarios (1,2) and the subsequent no...
In general the SEM sample preparation techniques are more or less similar to the metallographic sample preparation technique for optical microscopy, because both the microscopes reveals the surface topography of sample. In SEM a focussed beam of electrons scans over the specimen surface and the electrons emitted from the sample surface controls the brightness of the CRT spot which also scans th...
Background& Objective: Each laboratory should determine the type of errors and turnaround time (TAT), especially in the preanalytical phase to report quality and timeliness of the test results. The current study aimed at investigating the common causes of preanalytical errors in biochemistry and hematology laboratories and evaluating the preanalytical ...
Tapping mode (TM) atomic force microscopy (AFM) in a liquid environment is widely used to measure the contours of biological specimens. The TM triggers the AFM probe approximately at the resonant frequencies and controls the tip such that it periodically touches the specimen along the scanning path. The AFM probe and its tip produce a hydrodynamic pressure on the probe itself and press the spec...
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