نتایج جستجو برای: national standards
تعداد نتایج: 486932 فیلتر نتایج به سال:
National Bureau of Standards Gaithersburg, MD 20899 Grid plates are calibrated by a completely automated high precision measuring machine which uses a computer vision system to detect and locate the grid marks. The system routinely calibrates plates of up to 600x600 millimeters with accuracies of 0.5 micrometers. Descriptions of the system components, level of performance and tests of the absol...
The use of national consensus standards will be of increased importance to this country as the U.S. economy moves toward more of a global perspective. National consensus standards reflect the opinions of professionals who work at all levels of the public and private sectors in technology development, manufacturing, training, financial analysis, personnel, academia as well as insight from the fi...
This paper describes the beginning and evolution of microwave rotational spectroscopic research starting in 1954 at the National Bureau of Standards (NBS), located at that time in Washington, DC, through the present at NIST in Gaithersburg, MD. David Lide was hired in 1954 to start this research employing Stark modulated waveguide septum cells. When Donald R. Johnson joined the lab in 1968, he ...
According to medical studies, cardiovascular diseases are the most common and most important risk factor for mortality and disability in Iran. Hence, the National Blood Pressure Control Program was implemented throughout the country from May 17, 2018 (coinciding with the World Blood Pressure Control Day) to July 6th. One of the important issues in blood pressure screening is the correct diagnos...
Introduction: This study embarked on the evaluation of the quality of curriculum of general medicine in Baqiyatallah University based on Iranian national and WFME global standards. Method: A survey study was designed using a valid and reliable questionnaire based on Basic Standards for undergraduate general medicine curriculum in Iran as well as WFME standards. Data were collected from faculty...
New National and State standards are being mandated for all children, including children with disabilities. The challenge is to ensure that teachers have the training and tools to meet the needs of a heterogeneous population. This presentation describes a professional development effort for teachers designed to model standard-based instruction in science, so that their students can achieve the ...
recently organic agriculture as a most popular alternative production system has increasingly been considered by scientists, people and policymakers and governments in the world, and many research programs are directed to this sustainable production system. in organic agriculture it is hardly recommended to integrate plant with animal husbandry in agroecosystem. various animal products such as ...
Background: Accidents caused by children’s play equipment are a severe health threat to them. Implementing the requirements of the safety standards is necessary to ensure the safety of such equipment. The current study aimed to determine the general safety of playground equipment in general parks in Gonabad City, Iran. We also compared the level of the general safety of this equipment with nati...
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