In order to study the detonation velocity deficits of bending flexible detonating fuses,a physical model and a theoretical mathematical equation of detonation velocity deficits for bending flexible detonation fuses we...In order to study the detonation velocity deficits of bending flexible detonating fuses,a physical model and a theoretical mathematical equation of detonation velocity deficits for bending flexible detonation fuses were established based on the detonation wave＇s corner effects and delay time phenomenon by using non-dimensional analysis method.Besides,a semi-empirical formula of detonation velocity deficit for bending fuses in the same charge size was obtained through experiment and curve fitting.The result shows that an exponential relationship between the detonation velocity deficits and reciprocal of curvature radius.展开更多
The definitions of strong superadditive deficit for relative entropy coherence and monogamy deficit of measurement-dependent global quantum discord are proposed.The equivalence between them is proved,which provides a ...The definitions of strong superadditive deficit for relative entropy coherence and monogamy deficit of measurement-dependent global quantum discord are proposed.The equivalence between them is proved,which provides a useful criterion for the validity of the strong superadditive inequality of relative entropy coherence.In addition,the strong superadditive deficit of rela.tive entropy coherence is proved to be greater than or equal to zero under the condition that bipartite measurement-dependent global quantum discord(GQD)does not increase under the discarding of subsystems.Using the Monte Carlo method,it is shown that both the strong superadditive inequality of relative entropy coherence and the monogamy inequality of measurement-dependent GQD are established under general circumstances.The bipartite measurement-dependent GQD does not increase under the discarding of subsystems.The multipartite situation is also discussed in detail.展开更多
BACKGROUND: The use and abuse of designer drugs has been recognized for decades; however there are many derivatives of compounds that make their way into the community. Abuse of compound(s) known on the street as &quo...BACKGROUND: The use and abuse of designer drugs has been recognized for decades; however there are many derivatives of compounds that make their way into the community. Abuse of compound(s) known on the street as "bath salt" is on the rise.METHODS: We report the case of a 33-year-old man who complained of "flashbacks" and right arm shaking that followed a night of "bath salt" snorting. The active compound methylenedioxypyrovalerone methamphetamine(MDPV) was confirmed; however, analysis of three different "bath salt" products showed difference in their active components.RESULTS: The patient's symptoms remained stable and he was discharged home after observation in the emergency department with instructions to return for any symptom progression.CONCLUSION: Practitioners should be aware of the abuse of the compounds and that not all "bath salt" products contain MDPV.展开更多
Macao registered a trade deficit of 23.26 billion patacas (2.94 billion U.S. dollars) in the first ten months of 2009, an increase of 4.2 percent over the same period of last year, according to the figures released on...Macao registered a trade deficit of 23.26 billion patacas (2.94 billion U.S. dollars) in the first ten months of 2009, an increase of 4.2 percent over the same period of last year, according to the figures released on Dec. 1, 2009 by the region’s Statistics and Census Service (DSEC).展开更多
A large-volume HPGe detector normally has a severe ballistic deficit due to its long rise time of the output signals.Despite the trapezoidal shaping algorithm adopted as a remedy to deal with the signals,the algorithm...A large-volume HPGe detector normally has a severe ballistic deficit due to its long rise time of the output signals.Despite the trapezoidal shaping algorithm adopted as a remedy to deal with the signals,the algorithm cannot fully eliminate the ballistic deficit in the case of a high counting rate.To resolve the problem,we propose a ballistic deficit compensation method that is based on the measurement of rise time of the signals before shaping.We find that the ballistic deficit after trapezoidal shaping has little relation to the time constant,but shows a quadratic relationship with the rise time and has a negative correlation with the shaping time.In the case of high count rates,the high resolution is handled by fitting the curve to the rise time and the amplitude deficit of the signal after shaping and by compensating for the signal amplitude after trapezoidal shaping.Tests indicate that when the count rate is about 100 kcps,the resolution of Co-60 improves from traditional 2.32 up to 1.91 keV,thus reaching a higher level.展开更多
目的:基于R语言初步探讨儿童抽动障碍(TD)合并注意缺陷多动障碍(ADHD)的证型证素及中医用药规律。方法:计算机检索CNKI、万方、维普、CBM、PubMed、the Cochrane Library、EMBase、Web of Science等数据中建库至2023年11月10日收录的所...目的:基于R语言初步探讨儿童抽动障碍(TD)合并注意缺陷多动障碍(ADHD)的证型证素及中医用药规律。方法:计算机检索CNKI、万方、维普、CBM、PubMed、the Cochrane Library、EMBase、Web of Science等数据中建库至2023年11月10日收录的所有中医药治疗TD合并ADHD的文献,采用Excel软件筛选文献,对证型证素及中药规范化整理后,建立数据库,运用R语言及RStudio软件进行相应的数据挖掘,包括关联分析和聚类分析,探索儿童TD合并ADHD证型证素分布及中药分布规律。结果:最终纳入23篇文献。共得到20个证型,频次最高的证型为风痰内扰证,共提取证素16个,主要病位证素是肝、肾、脾、心,主要病性证素是阳亢、阴虚、动风、外风、痰,关联分析后得到支持度和置信度最高的组合是外风-动风。聚类分析后可得到5个聚类组:(1)痰、动风、外风;(2)肝、阳亢、肾、阴虚;(3)脾、气虚;(4)心、火/热、津亏;(5)胃、血虚、气滞、精亏。共纳入中药98味,其中14味频次≥10,排名前5为白芍、龙骨、钩藤、远志、天麻;分为18类,主要为补虚药、解表药、清热药、安神药、息风止痉药;主归肝、心、肺、脾、肾经;关联规则与聚类分析形成以白芍、熟地黄、天麻、钩藤、石决明、全蝎、珍珠母、龙骨、远志9味药为基础的核心药物组方。结论:儿童TD合并ADHD病位在肝、肾、脾、心,常见病性证素为阴虚、阳亢、动风、外风、痰,以养血滋阴、平肝息风、清热安神为主要治则,核心组方为白芍、熟地黄、天麻、钩藤、石决明、全蝎、珍珠母、龙骨、远志,需根据辨证灵活加减组方。展开更多
基金Supported by the Foundation of State Key Laboratory of Explosion Science and Technology(YBKT10-04)
文摘In order to study the detonation velocity deficits of bending flexible detonating fuses,a physical model and a theoretical mathematical equation of detonation velocity deficits for bending flexible detonation fuses were established based on the detonation wave＇s corner effects and delay time phenomenon by using non-dimensional analysis method.Besides,a semi-empirical formula of detonation velocity deficit for bending fuses in the same charge size was obtained through experiment and curve fitting.The result shows that an exponential relationship between the detonation velocity deficits and reciprocal of curvature radius.
基金Supported by the National Natural Science Foundation of China under Grant Nos 11775177,11775178,11647057 and 11705146the Special Research Funds of Shaanxi Province Department of Education under Grant No 16JK1759+5 种基金the Basic Research Plan of Natural Science in Shaanxi Province under Grant No 2018JQ1014the Major Basic Research Program of Natural Science of Shaanxi Province under Grant No 2017ZDJC-32the Key Innovative Research Team of Quantum Many-Body Theory and Quantum Control in Shaanxi Province under Grant No 2017KCT-12the Northwest University Scientific Research Funds under Grant No15NW26the Double First-Class University Construction Project of Northwest Universitythe Australian Research Council through Discovery Projects under Grant No DP190101529
文摘The definitions of strong superadditive deficit for relative entropy coherence and monogamy deficit of measurement-dependent global quantum discord are proposed.The equivalence between them is proved,which provides a useful criterion for the validity of the strong superadditive inequality of relative entropy coherence.In addition,the strong superadditive deficit of rela.tive entropy coherence is proved to be greater than or equal to zero under the condition that bipartite measurement-dependent global quantum discord(GQD)does not increase under the discarding of subsystems.Using the Monte Carlo method,it is shown that both the strong superadditive inequality of relative entropy coherence and the monogamy inequality of measurement-dependent GQD are established under general circumstances.The bipartite measurement-dependent GQD does not increase under the discarding of subsystems.The multipartite situation is also discussed in detail.
文摘BACKGROUND: The use and abuse of designer drugs has been recognized for decades; however there are many derivatives of compounds that make their way into the community. Abuse of compound(s) known on the street as "bath salt" is on the rise.METHODS: We report the case of a 33-year-old man who complained of "flashbacks" and right arm shaking that followed a night of "bath salt" snorting. The active compound methylenedioxypyrovalerone methamphetamine(MDPV) was confirmed; however, analysis of three different "bath salt" products showed difference in their active components.RESULTS: The patient's symptoms remained stable and he was discharged home after observation in the emergency department with instructions to return for any symptom progression.CONCLUSION: Practitioners should be aware of the abuse of the compounds and that not all "bath salt" products contain MDPV.
文摘Macao registered a trade deficit of 23.26 billion patacas (2.94 billion U.S. dollars) in the first ten months of 2009, an increase of 4.2 percent over the same period of last year, according to the figures released on Dec. 1, 2009 by the region’s Statistics and Census Service (DSEC).
基金supported by Natural Science Foundation of China(No.41274109)Youth Innovation Team of Sichuan Province(2015TD0020)
文摘A large-volume HPGe detector normally has a severe ballistic deficit due to its long rise time of the output signals.Despite the trapezoidal shaping algorithm adopted as a remedy to deal with the signals,the algorithm cannot fully eliminate the ballistic deficit in the case of a high counting rate.To resolve the problem,we propose a ballistic deficit compensation method that is based on the measurement of rise time of the signals before shaping.We find that the ballistic deficit after trapezoidal shaping has little relation to the time constant,but shows a quadratic relationship with the rise time and has a negative correlation with the shaping time.In the case of high count rates,the high resolution is handled by fitting the curve to the rise time and the amplitude deficit of the signal after shaping and by compensating for the signal amplitude after trapezoidal shaping.Tests indicate that when the count rate is about 100 kcps,the resolution of Co-60 improves from traditional 2.32 up to 1.91 keV,thus reaching a higher level.
文摘目的:基于R语言初步探讨儿童抽动障碍(TD)合并注意缺陷多动障碍(ADHD)的证型证素及中医用药规律。方法:计算机检索CNKI、万方、维普、CBM、PubMed、the Cochrane Library、EMBase、Web of Science等数据中建库至2023年11月10日收录的所有中医药治疗TD合并ADHD的文献,采用Excel软件筛选文献,对证型证素及中药规范化整理后,建立数据库,运用R语言及RStudio软件进行相应的数据挖掘,包括关联分析和聚类分析,探索儿童TD合并ADHD证型证素分布及中药分布规律。结果:最终纳入23篇文献。共得到20个证型,频次最高的证型为风痰内扰证,共提取证素16个,主要病位证素是肝、肾、脾、心,主要病性证素是阳亢、阴虚、动风、外风、痰,关联分析后得到支持度和置信度最高的组合是外风-动风。聚类分析后可得到5个聚类组:(1)痰、动风、外风;(2)肝、阳亢、肾、阴虚;(3)脾、气虚;(4)心、火/热、津亏;(5)胃、血虚、气滞、精亏。共纳入中药98味,其中14味频次≥10,排名前5为白芍、龙骨、钩藤、远志、天麻;分为18类,主要为补虚药、解表药、清热药、安神药、息风止痉药;主归肝、心、肺、脾、肾经;关联规则与聚类分析形成以白芍、熟地黄、天麻、钩藤、石决明、全蝎、珍珠母、龙骨、远志9味药为基础的核心药物组方。结论:儿童TD合并ADHD病位在肝、肾、脾、心,常见病性证素为阴虚、阳亢、动风、外风、痰,以养血滋阴、平肝息风、清热安神为主要治则,核心组方为白芍、熟地黄、天麻、钩藤、石决明、全蝎、珍珠母、龙骨、远志,需根据辨证灵活加减组方。
