نتایج جستجو برای: bor
تعداد نتایج: 1101 فیلتر نتایج به سال:
The structural genes for threonyl-tRNA synthetase (ThrRS) and phenylalanyl-tRNA synthetase (PheRS) are closely linked on the Escherichia coli chromosome. To study whether these enzymes share a common regulatory element, we have investigated their synthesis in mutants which were selected for overproduction of either ThrRS or PheRS. It was found that mutants isolated previously for overproduction...
Some of the observational aspects related to the evolutionary status and dust production in R Cor Bor stars are discussed. Recent work regarding the surface abundances, stellar winds and evidence for dust production in these high luminosty hydrogen deficient stars are also reviewed. Possibility of the stellar winds being maintained by surface magnetic fields is also considered.
Bor-Luen Huang,1 Ming-Che Chang,1 and Chung-Yu Mou2,3,4 1Department of Physics, National Taiwan Normal University, Taipei, Taiwan 2Department of Physics, National Tsing Hua University, Hsinchu, Taiwan 3Institute of Physics, Academia Sinica, Nankang, Taiwan 4Physics Division, National Center for Theoretical Sciences, P.O. Box 2-131, Hsinchu, Taiwan Received 26 May 2010; revised manuscript receiv...
Background: Hospitals, the main providers of healthcare services, are costly centers which account for about 80% of the health sector budget and have a huge share of resources. Objective: This study aimed to analyze the economic performance of selected military hospitals in Tehran using hospital indicators and inpatient bed-day costs. Method...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید