WebNov 25, 2024 · 引用半衰期(citing halflife) 是计算某一期刊平均引用多久以前的论文。 计算方法是从当年往前累计,当引用的论文篇数达到全部的50%时,该篇论文的出版年到 … WebFeb 28, 2024 · Helium has seven known isotopes, ranging from He-3 to He-9. Most of these isotopes have multiple decay schemes where the decay type depends on the overall energy of the nucleus and its total angular momentum quantum number. This table lists helium isotopes, half-life, and type of decay: Isotope. Half-Life.
Approach for Using Journal Citation Reports in Determining the …
WebCiting Half Life. 7.2. The Citing Half Life measures the median age of the articles that were cited by the journal in the JCR year. Total Citations. 8,478. Total citations to the journal in the JCR year. Scopus. CiteScore. 2.000. Biochemistry 343 out of 425 Biochemistry (medical) 43 out of 61 Cell Biology 245 out of 274. WebCiting Half-Life Data. The Citing Half-Life is the median age of the citations produced by a journal during the JCR year. A citation’s age is equal to the publication year of the citing item (i.e., JCR year) minus the publication … how far is prescott az to lake havasu city az
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WebApr 29, 2015 · By definition, half of the articles in a journal will be older than the cited half-life; the other half will be younger. The concept of half-life can also be applied to article downloads. For the entire dataset of journals, the mean weighted cited half-life was 6.5 years, which grew at a rate of 0.13 years per annum. WebMay 12, 2024 · Abstract A product with increased quality and nutritional value can be developed by enriching noodles with shrimp meat (SM). The formulation of noodle dough was supplemented with SM (10, 20 and 30% w/w). The noodles were freeze-dried due to the susceptibility of added SM to spoilage. Water activity values of all samples were below … WebThe analogy between the half-life of radioactive substances and the rate of obsolescence of scientific literature suggests the possibility of more accurate prognostications concerning the period of time during which scientific literature may be used and hence might help to guide the planning of library collections and technical information services. A consideration of … highbury online courses