نتایج جستجو برای: reference standards
تعداد نتایج: 370182 فیلتر نتایج به سال:
introduction: database evaluation indicators include management, content, technical, and search indicators. a database must have a high level of information retrieval. as search features is one of the most important factors in database evaluation, this research tried to evaluate search input and output in online databases of isfahan university of medical sciences (iums) central library website ...
abstract objective: homeostasis model assessment of insulin resistance (homa-ir) is a simple and practical method for estimation of insulin resistance (ir), but a reliable reference interval (ri) of homa-ir is needed to deduce the threshold level to define ir. this ri has been controversial in different populations and even more divergent when considering factors like age, gender and body mass ...
in this study reference as one of the five cohesive devices in the achievement of textuality in english and persian narrative/descripitive written texts is focused on and analysed . to do so , the theoretical framework elaborated by halliday and hasan (1976) and its version adapted by the writer to match the sub-types of reference in farsi are applied to the analysis of reference in english and...
Sustainable forest management standards and measurement instruments subject and use them as the main tool is very important for monitoring and control in forest management. Sustainable progress monitoring and measuring possible by tools and standards. Tools and standards to help sustainable forest management can be more accurate and better information provided to forest managers and decision-ma...
The P.K. Morgan Mark II Ventilometer comprises a turbine transducer and a control/readout unit, which contains either a VENTX5A or VENTX6A programme. This equipment is used to measure minute ventilation during oxygen consumption tests. The precision and accuracy of six of these devices (a VENTX5A with two turbines, and two VENTX6As each with two different turbines) were examined during continuo...
Neutrophil adherence to endothelial monolayers in multi-well plates can be rapidly quantitated, using a fluorescent plate reader. The number of adherent neutrophils which have been labeled with biscarboxyethyl carboxyfluorescein (BCECF) was calculated by comparing fluorescence of endothelial monolayers to a reference standard curve determined by fluorescence intensity of suspensions of labeled ...
Keywords: geometric matching, aircraft tracks, systematic errors of radars A problem of processing the measurements from air surveillance radars is considered. The measurements are provided by observation of air traffic. This processing aims at matching the tracks of aircrafts obtained by various radars and estimation of their systematic errors. The error estimates are built in the form of a " ...
We describe the results of a comparison of reference standards between the National Institute of Standards and Technology (NIST-USA) and Korea Research Institute of Standards and Science (KRISS-R.O. Korea) for optical fiber-based power measurements at wavelengths of 1302 nm and 1546 nm. We compare the laboratories' reference standards by means of a temperature-controlled optical trap detector. ...
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