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21.
应用新发展的单一轨迹积分方法求解库仑加线性位的基态量子波函数,得到基态能量和波函数的一般解析表达式,并讨论了解的收敛性.应用此方法讨论了重夸克偶素系统. 相似文献
22.
This paper concerns a Markov operator T on a space L1, and aMarkov process P which defines a Markov operator on a spaceM of finite signed measures. For T, the paper presents necessaryand sufficient conditions for:
- a the existence of invariant probabilitydensities (IPDs)
- b the existence of strictly positive IPDs,and
- c the existence and uniqueness of IPDs.
- b the existence of strictly positive IPDs,and
23.
Jennifer E. Kyle Cameron P. Casey Kelly G. Stratton Erika M. Zink Young‐Mo Kim Xueyun Zheng Matthew E. Monroe Karl K. Weitz Kent J. Bloodsworth Daniel J. Orton Yehia M. Ibrahim Ronald J. Moore Christine G. Lee Catherine Pedersen Eric Orwoll Richard D. Smith Kristin E. Burnum‐Johnson Erin S. Baker 《Rapid communications in mass spectrometry : RCM》2017,31(5):447-456
24.
L. Robert Baker Marisa A. Stark Andrew W. Orton Brent A. Horn Steven R. Goates 《Journal of chromatography. A》2009,1216(29):5588-5593
Density gradients in packed capillary columns operating under the extreme pressure drops typical for solvating gas chromatography were investigated by on-column spectroscopic measurements and compared to a theoretical model. Laser-induced fluorescence was used to follow the elution of various analytes, and Raman spectroscopy was used to measure the density of the mobile phase, each with respect to column position. Mobile phase linear velocity initially increases gradually, and then rises rapidly near the column outlet. High flow rates near the column outlet are offset by a loss of mobile phase solvating power which ultimately limits the speed of separation. These results represent an extreme case for illuminating factors affecting supercritical fluid separation techniques in general. 相似文献
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Shukla A Zhang R Orton DJ Zhao R Clauss TR Moore R Smith RD 《Rapid communications in mass spectrometry : RCM》2011,25(10):1452-1456
Two unexpected singly charged ions at m/z 1103 and 944 have been observed in mass spectra obtained from electrospray ionization mass spectrometric analysis of liquid chromatography effluents with mobile phases containing trifluoroacetic acid (TFA) that severely interfered with sample analysis. Accurate mass measurement and tandem mass spectrometry studies revealed that these two ions are composed of three components; clusters of trifluoroacetic acid, clusters of mass 159 and iron. Formation of these ions is inhibited by removing TFA from the mobile phases and using formic acid in its place, replacing the stainless steel union with a titanium union or by adding a small blank fused-silica capillary column between the chromatography column and the electrospray tip via a stainless steel union without any adverse effects to chromatographic separation, peak broadening or peptide identifications. 相似文献
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N. Husson A. Goldman G. Orton 《Journal of Quantitative Spectroscopy & Radiative Transfer》1982,27(5):505-515
NH3 and PH3 rotation and rotation-inversion line parameters in the far to medium i.r. are calculated for remote sounding purposes of planetary atmospheres; 1607 lines of 14NH3, 362 lines of 15NH3 and 325 lines of PH3 are compiled. The absolute intensity formulation has been reviewed in the case of rotation adn rotation-inversion lines of molecules with C3v symmetry. The justification of the general agreement between the authors, and comparisons with other published expressions are given. 相似文献
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