排序方式: 共有43条查询结果,搜索用时 15 毫秒
31.
Minogue EM Taylor TP Burrell AK Havrilla GJ Warner BP Janicke MT 《Chemical communications (Cambridge, England)》2005,(33):4167-4168
An effective high throughput screening technique is described for the rapid analysis of zeolites as binding agents for cationic sequestration. 相似文献
32.
33.
34.
35.
Van Bael MJ Bekaert J Temst K Van Look L Moshchalkov VV Bruynseraede Y Howells GD Grigorenko AN Bending SJ Borghs G 《Physical review letters》2001,86(1):155-158
A scanning Hall probe microscope is used to study flux pinning in a thin superconducting Pb film covering a square array of single-domain Co dots with in-plane magnetization. We show that single flux quanta of opposite sign thread the superconducting film below T(c) at the opposite poles of these dipoles. Depending on the polarity of the applied field, flux lines are attracted to a specific pole of the dipoles, due to the direct interaction with the vortexlike structures induced by the local stray field. 相似文献
36.
Seal JR Havrilla CM Porter NA Hachey DL 《Journal of the American Society for Mass Spectrometry》2003,14(8):872-880
Coordination ionspray mass spectrometry (CIS-MS) is a useful tool in the detection and identification of cholesterol ester and phospholipid hydroperoxides and diacyl peroxides. Extensive studies of a series of cholesterol esters using CIS-MS revealed the following: (1) Cholesterol esters with equal number of double bonds as the internal standard showed a linear relative response in the mass spectrometer while compounds with non-equal numbers of double bonds gave a nonlinear relative response. (2) Complex adducts containing cholesterol ester, silver ion, AgF, AgBF(4), and 2-propanoxide form when silver is in molar excess of cholesterol esters, reducing the [M + Ag](+) signal. (3) In a mixture of cholesterol esters where silver is limiting, Ch22:6 and Ch20:4 bind to silver at the expense of Ch18:2 and have a higher signal in the mass spectrometer. (4) In a mixture of cholesterol esters where silver concentration is twofold greater than total cholesterol ester concentration, Ch22:6 and Ch20:4 form large complex adducts more frequently than Ch18:2 and have a lower signal in the mass spectrometer. 相似文献
37.
L. Tandon E. Hastings J. Banar J. Barnes D. Beddingfield D. Decker J. Dyke D. Farr J. FitzPatrick D. Gallimore S. Garner R. Gritzo T. Hahn G. Havrilla B. Johnson K. Kuhn S. LaMont D. Langner C. Lewis V. Majidi P. Martinez R. McCabe S. Mecklenburg D. Mercer S. Meyers V. Montoya B. Patterson R. A. Pereyra D. Porterfield J. Poths D. Rademacher C. Ruggiero D. Schwartz M. Scott K. Spencer R. Steiner R. Villarreal H. Volz L. Walker A. Wong C. Worley 《Journal of Radioanalytical and Nuclear Chemistry》2008,276(2):467-473
The goal of nuclear forensics is to establish an unambiguous link between illicitly trafficked nuclear material and its origin.
The Los Alamos National Laboratory (LANL) Nuclear Materials Signatures Program has implemented a graded “conduct of operations”
type analysis flow path approach for determining the key nuclear, chemical, and physical signatures needed to identify the
manufacturing process, intended use, and origin of interdicted nuclear material. This analysis flow path includes both destructive
and non-destructive characterization techniques and has been exercized against different nuclear materials from LANL’s special
nuclear materials archive. Results obtained from the case study will be presented to highlight analytical techniques that
offer the critical attribution information. 相似文献
38.
39.
40.