نتایج جستجو برای: core samples
تعداد نتایج: 627977 فیلتر نتایج به سال:
Fourth-generation assays for the simultaneous detection of human immunodeficiency virus (HIV) antigen and antibody that were available on the international market until now have antigen detection modules with relatively poor sensitivity and produce a higher rate of false-positive results than third-generation enzyme immunoassays (EIAs). The new Cobas Core HIV Combi EIA with an improved sensitiv...
Recent developments allow high-pressure mercury intrusion experiments to be performed under reservoir-representative confining stress. NMR relaxation measurements on core samples are increasingly being used in addition to mercury intrusion data since the two techniques yield complementary information about the pore network. Integration of the different measurement techniques result in a more de...
The primary goal of minimally invasive breast biopsy techniques is to reduce the amount of time, cost and trauma associated with surgery as a diagnostic procedure without sacrificing histological accuracy. Over 1 million women undergo surgical procedures each year to diagnose an abnormality found during mammography. Over the past decade, ultrasound-guided (US) large-core needle biopsy has becom...
Core-shell 12-tungstophosphoric acid/TiO2 (HPW/TiO2) nanoparticles at 10 and 20% of HPW have been synthesized by simple in-situ sol- gel method. Characterization of the samples was carried out by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier transform infrared (FTIR). The X-ray diffraction patterns of as prepared solid samples, indicated characterist...
PURPOSE To compare the fracture resistance and the mode of failure of endodontically treated teeth restored with different post-core systems. MATERIALS AND METHODS Root canal treatment was performed on 40 maxillary incisors and the samples were divided into four groups of 10 each. For three experimental groups post space preparation was done and teeth were restored with cast post-core (Group ...
ABSTRACT The usefulness of core collections of germplasm collections has been well established. The U.S. germplasm collection for peanuts was selectively reduced based on morphological characteristics to a mini core or ‘‘Core of the Core’’ collection composed of 112 of the 7432 accessions in the whole collection to make it more efficient for study. Of these samples, 108 were available from one ...
To evaluate the capacity of Versant HCV genotype assay (LiPA) 2.0 to identify hepatitis C virus (HCV) genotypes, 110 serum samples were collected from chronic hepatitis C patients. Three methods were compared: core sequence analysis, NS5B sequence analysis and the INNO-LiPA assay. The result showed that 102 (92.7%) of the samples were amplified in either or both regions, of which 97 were amplif...
BACKGROUND Unclear cervicofacial masses are common presentations that often require tissue sampling to guide therapy. While open biopsy is invasive, fine-needle aspiration cytology includes a high rate of nondiagnostic samples. METHODS A retrospective analysis on 181 core-needle biopsies in 88 patients was performed to determine the diagnostic efficacy of ultrasound-guided core-needle biopsie...
objective: the purpose of this study was to evaluate and compare the effect of storage time and conditions on dimensional stability of acrylic patterns. materials and methods: in this in vitro study, a cylindrical shaped metallic post-core was fabricated. impressions were made from this metallic model and 30 samples were prepared with duralay acrylic resin. the specimens were divided into three...
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