نتایج جستجو برای: l ء 86
تعداد نتایج: 669908 فیلتر نتایج به سال:
Concentrations of arsenic and other trace elements in groundwater were examined at three villages (PT, POT and CHL) in the Kandal Province of Cambodia. Concentrations of arsenic in the groundwater ranged from 6.64 (in POT village) to 1543 microg/L (in PT village), with average and median concentrations of 552 and 353 microg/L, respectively. About 86% out of fifteen samples contained arsenic con...
Corresponding Author: Jian Mao, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China Tel: +86-510-8532-9062, Fax: +86-510-8591-2155, E-mail: [email protected] Abstract: Previous studies showed that γ-aminobutyric acid (GABA) can protect some GABA-producing bacteria against acid stress through glutamate decarboxylat...
A connected graph having large minimum vertex degree must have a spanning tree with many leaves. In particular, let l(n, k) be the maximum integer m such that every connected n-vertex graph with minimum degree at least k has a spanning tree with at least m leaves. Then l(n, 3) ≥ n/4 + 2, l(n, 4) ≥ (2n + 8) /5, and l(n, k) ≤ n − 3n/(k +1) + 2 for all k. The lower bounds are proved by an algori...
http://dx.doi.org/10.1016/j.knosys.2014.11.017 0950-7051/ 2014 Elsevier B.V. All rights reserved. ⇑ Corresponding author. Tel.: +86 (010) 62789831; fax: +86 (010) 62781461. E-mail addresses: [email protected] (L. Hou), [email protected]. edu.cn (J. Li), [email protected] (Z. Wang), [email protected] (J. Tang), [email protected] (P. Zhang), [email protected]...
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