نتایج جستجو برای: diagnostic equipment quality control reproducibility
تعداد نتایج: 2304140 فیلتر نتایج به سال:
This paper presents a general diagnostic system that can be applied to semiconductor equipment to assist the operator in finding the causes of decreased machine performance. Based on conventional probability theory, the diagnostic system incorporates both shallow and deep level information. From the observed evidence, and from the conditional probabilities of faults initially supplied by machin...
objective: the aim of the present study was to compare the performance of laser fluorescence (lf) method with other conventional diagnostic techniques in detection of small occlusal caries in permanent teeth. materials and methods: prior to this in vitro diagnostic study, a pilot study assessed intra- examiner reliability and reproducibility. the occlusal surfaces of 90 extracted human premolar...
a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...
BACKGROUND The detection of pathogens at early stages of infection is a key point for disease control in aquaculture. Therefore, accurate diagnostic procedures are a must. Real-time PCR has been a mainstay in diagnostics over the years due to its speed, specificity, sensitivity, reproducibility and throughput; as such, real-time PCR is a target for improvement. Nevertheless, to validate a novel...
the need for high-quality medical equipment in the hospital supply chain has more than ever demonstrated the necessity and importance of quality management to be implemented by administrators in line with the iranian health reform plan. in this study, the game theory was used to model the strategies chosen by companies supplying medical equipment to hospitals. considering the process of self-le...
Fluorescent Protein Tracing 3rd ed. Edited by R. C. Nairn. (Pp. 503. 60s.) Edinburgh and London: E. & S. Livingstone Ltd. 1969. Immunofluorescence has come a long way since the last edition of Professor Nairn's book appeared in 1964. Even then a short acquaintance with the method was still arousing in some of its practitioners suspicions about reliability and reproducibility that all too often ...
Microarrays represent a powerful technology that provides the ability to simultaneously measure the expression of thousands of genes. However, it is a multi-step process with numerous potential sources of variation that can compromise data analysis and interpretation if left uncontrolled, necessitating the development of quality control protocols to ensure assay consistency and high-quality dat...
The article considers the issue of diagnosing condition multilayer elements and structures. Probing methods are considered. A multiphase detection method has been proposed to generate diagnostic information that allows reflected signals from several consecutive layers be obtained. reflection distance is determined for each layer. presentation a two-dimensional model structural sounding in prese...
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