نتایج جستجو برای: ویتامینb 12
تعداد نتایج: 580763 فیلتر نتایج به سال:
Evidence is presented that after injection of radioactive vitamin B(12) in man, there is a close correlation between the amount of radioactivity excreted and the amount of assayable vitamin B(12) excreted, and thus that the amount of radioactivity excreted is a true measure of the vitamin B(12) excreted. The possible reasons for this occurrence are discussed and it is suggested that in the body...
service Email alerting box at the top right corner of the article Receive free email alerts when new articles cite this article-sign up in the
A self-complementary, artificial vitamin B12 derivative dimerises in an unprecedented "intra base off/inter base on" coordination mode.
Atomic fountain clocks are showing great promise as primary frequency standards (1). In light of this, we have started a program to develop atomic fountain clocks at the U. S. Naval Observatory. The mission of the observatory, however, dictates different design goals than that of a standards institution. In this paper we will discuss the goals of our atomic fountain project, a scheme for reduci...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید