نتایج جستجو برای: ct number linearity
تعداد نتایج: 1306030 فیلتر نتایج به سال:
in present study, a sybr green based real time pcr assay was developed for specific detection and quantification of bacillus subtilis in dough used for bread making. new primer pairs were designed to amplify a 212 base pair fragment of the apre gene. specificity of these primer pairs was confirmed with conventional and real time pcr methods. standard curves constructed using the threshold cycle...
objective: in this study, we aimed to validate the accuracy of computed tomography-based attenuation correction (ctac) using the bilinear scaling method.methods: the measured attenuation coefficient (μm) was compared to a theoretical attenuation coefficient (μt ) using four different ct scanners and an rmi 467 phantom. the effective energy of the ct beam x-rays was calculated, using the aluminu...
A novel structure of VCO-based quantizer for CT ΣΔ modulator is presented which can significantly improve the VCO linearity. Compared to the traditional methods, the proposed structure uses only one VCO in the system and it also maintains the intrinsic Dynamic Element Matching (DEM) function of the VCO-based quantizer. A first order CT ΣΔ modulator with the proposed quantizer is designed and si...
Linearity tests are randomized algorithms which have oracle access to the truth table of some function f , which are supposed to distinguish between linear functions and functions which are far from linear. Linearity tests were first introduced by Blum, Luby and Rubenfeld in [BLR93], and were later used in the PCP theorem among other applications. The quality of a linearity test is described by...
Proximal dental caries remains a prevalent disease with only modest detection rates by current diagnostic systems. X-ray radiography represents the most common and successful means of diagnosing early dental caries lesions, however; many new systems are available without controlled validation of diagnostic efficacy. This study evaluated the caries detection of three new dental radiographic imag...
abstract previous researches have shown success of growth hormones usage on flower production increase, pod and prevention of abscission of them in some of the pulses. two tests were done, in order to find out the effects of growth hormones to on flower production increase, pod and chick pea yield composites in farmer conditions (2010-11) and green house conditions as factorial on the proje...
Novel simple user-friendly python programme was developed to predict linearity and non-linearity in pharmaceutical optimization. Optimization is the process of obtaining optimum formulation. There are independent dependent variables optimization techniques regarding formulations. The number levels factor usually selected based on linear/ non-linear relationship existing between variable. run af...
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