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Mechanism of the protective effects of noninvasive limbs preconditioning on myocardial ischemia-reperfusion injury

Chinese Medical Journal 2005年第20期118卷 1723-1727页

作者： chen xiao-guang wu bin-yang wang jun-ke bai tao Department of Anesthesiology First Affiliated Hospital ChinaMedical University Shenyang 110001 China

Background This study aimed at assessing the effect of noninvasive limb preconditioning on myocardial infarct size, and determining whether nitric oxide and neurogenic pathway play an important role in the mechanism of acute remote ischemic preconditioning （IPC）.Methods Forty Wistar rats were randomly divided into four experimental groups. In Group I , the rats underwent 30-minute occlusion of the left anterior descending coronary artery, and 120-minute reperfusion. In Group PL, the rats underwent four cycles of 5-minute occlusion and reperfusion of both hind limbs using a tourniquet before the experiment was continued as in Group I. In Group PL-N and Group PL-,, we administered L-nitro-arginine methyl ester （L-NAME） 10 mg/kg or hexamethonium chloride 20 mg,/kg intravenously, 10 minutes before IPC. Infarct size as a percentage of the area at risk was determined by triphenyhetrazolium chloride staining.Results There were no statistically significant differences in mean arterial pressure and heart rate among these groups at any time point during the experiment （ P〉0. 05 ）. The myocardial infarct size （IS） was decreased significantly in Group PL and Group PL-U compared with Group I , and the IS/AAR was 34. 5%± 7.6%, 35.9%±8.6% and58.5%±8.5%, respectively （P〈0.05）. The IS/AAR was 49.1%±6.5% in Group PEN, and there was no significant difference compared with Group I （P〉0. 05 ）.Conclusions Noninvasive limb IPC is effective in protecting the myocardium from ischemia reperfusion injury. Nitric oxide plays an important role in the mechanism of acute remote IPC, in which the neurogenic pathway is not involved.

关键词： limb preconditioning ·ischemia-reperfusion injury myocardial protection· nitric oxide·neurogenic pathway

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Mechanism of the protective effects of noninvasive limbs preconditioning on myocardial ischemia-reperfusion injury

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中华医学杂志(英文版) 2005年第20期 53-57页

作者： chen xiao-guang, wu bin-yang, wang jun-ke and bai tao Department of Anesthesiology, First Affiliated Hospital, China Medical Unive rsity, Shenyang 110001, China

Background This study aimed at assessing the effect of noninvasive limb preconditioning on myocardial infarct size, and deter mining whether nitric oxide and neurogenic pathway play an important role in the mechanism of acute remote ischemic preconditioning (IPC). Methods Forty Wistar rats were randomly divided into fo ur experimental groups. In Group Ⅰ, the rats underwent 30-minute occlusion of the left anterior descending coronary artery, and 120-minute reperfusion. In Group PL, the rats underwent four cycles of 5-minute occlusion and reperfusion of both h ind limbs using a tourniquet before the experiment was continued as in Group Ⅰ. In Group P L-N and Group P L-H, we administered L-nitro-arginine meth yl ester (L-NAME) 10 mg/kg or hexamethonium chloride 20 mg/kg intravenously, 10 minutes before IPC. Infarct size as a percentage of the area at risk was deter mine d by triphenyltetrazolium chloride staining. Results There were no statistically significant differences in mean arterial pressure and heart rate amo ng these groups at any time point during the experiment (P>0.05). The myo cardial infarct size (IS) was decreased significantly in Group PL and Group P  L-H compared with Group Ⅰ, and the IS/AAR was 34.5%±7.6%, 35.9%±8. 6 % and 58.5%±8.5%, respectively (P0.05). Conclusions Noninvasive limb IPC is effective in protecting the myocardium from ischemia reperfusion injury. Nitric oxide plays an important r ole in the mechanism of acute remote IPC, in which the neurogenic pathway is not involved .

关键词： limb preconditioning · ischemia-reperfusion injury · myocardial protection · nitric oxide · neurogenic pathway

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Adsorption and desorption of hydrogen on/from single-vacancy and double-vacancy graphenes

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Nuclear Science and Techniques 2019年第4期30卷 150-158页

作者： Xi-jun wu Ze-Jie Fei Wen-Guan Liu Jie Tan guang-Hua wang Dong-Qin Xia ke Deng Xue-Kun chen De-tao xiao Sheng-Wei wu Wei Liu School of Mathematics and Physics University of South China Shanghai Institute of Applied Physics Chinese Academy of Sciences Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen University key Laboratory of Neutronics and Radiation Safety Institute of Nuclear Energy Safety Technology Chinese Academy of Sciences

Adsorption and desorption of hydrogen on/from single-vacancy and double-vacancy graphenes were studied by means of first-principles calculations. The structure and stability of continuous hydrogenation in single vacancy were investigated. Several new stable structures were found, along with their corresponding energy barriers. In double-vacancy graphene, the preferred sites of H atoms were identified, and H2 molecule desorption and adsorption of from/on were calculated from the energy barriers. This work provides a systematic and comprehensive understanding of hydrogen behavior on defected graphene.

关键词： Hydrogen Graphene Single vacancy Double vacancy Adsorption Desorption First-principles calculation

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Measurement of the ^(232)Th(n,f)cross section in the 1-200 MeV range at the CSNS Back-n

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Nuclear Science and Techniques 2023年第8期34卷 142-153页

作者： Zhi-Zhou Ren Yi-Wei yang Yong-Hao chen Rong Liu Bang-Jiao Ye Jie Wen Hai-Rui Guo Zi-Jie Han Qi-Ping chen Zhong-Wei Wen Wei-Li Sun Han Yi Xing-Yan Liu tao Ye Jiang-Bo bai Qi An Jie Bao Yu Bao Ping Cao Hao-Lei chen Zhen chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng ke-Qing Gao xiao-Long Gao Min-Hao Gu Chang-Cai Han Guo-Zhu He Yong-cheng He yang Hong Yi-Wei Hu Han-Xiong Huang Xi-Ru Huang Hao-Yu Jiang Wei Jiang Zhi-Jie Jiang Han-tao Jing Ling Kang Bo Li Chao Li Jia-Wen Li Qiang Li xiao Li yang Li Jie Liu Shu-bin Liu Ze Long guang-Yuan Luan Chang-jun Ning Meng-chen Niu bin-bin Qi Jie Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-Xin Tan Jing-Yu Tang Xin-Yi Tang bin-bin Tian Li-Jiao wang Peng-cheng wang Zhao-Hui wang xiao-guang wu Xuan wu Li-Kun Xie xiao-Yun yang Li Yu tao Yu Yong-Ji Yu Guo-Hui Zhang Lin-Hao Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang Lu-Ping Zhou Zhi-Hao Zhou ke-jun Zhu Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Institute of Applied Physics and Computational Mathematics Beijing 100088China State key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230027China key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China State key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijingChina Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China

The ^(232)Th(n,f)cross section is very important in basic nuclear physics and applications based on the Th/U fuel *** the time-of-flight method and a multi-cell fast-fission ionization chamber,a novel measurement of the^(232)Th(n,f)cross sec-tion relative to^(235)U in the 1–200 MeV range was performed at the China Spallation Neutron Source Back-n white neutron source(Back-n).The fission event-neutron energy spectra of^(232)Th and^(235)U fission cells were measured in the single-bunch *** 232Th/235U fission cross-sectional ratios were obtained,and the measurement uncertainties were 2.5–3.7%for energies in the 2–20 MeV range and 3.6–6.2%for energies in the 20–200 MeV ***^(232)Th(n,f)cross section was obtained by introducing the standard cross section of^(235)U(n,f).The results were compared with those of previous theoreti-cal calculations,measurements,and *** measured 232Th fission cross section agreed with the main evaluation results in terms of the experimental uncertainty,and 232Th fission resonances were observed in the 1–3 MeV *** present results provide^(232)Th(n,f)cross-sectional data for the evaluation and design of Th/U cycle nuclear systems.

关键词： 232Th(n f)cross section Fast-fission ionization chamber Back-n white neutron source

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Detection of an anti-angina therapeutic module in the effective population treated by a multi-target drug Danhong injection:a randomized trial

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Signal Transduction and Targeted Therapy 2021年第10期6卷 3009-3018页

作者： jun Liu Dan-Dan Li Wei Dong Yu-Qi Liu yang wu Da-Xuan Tang Fu-Chun Zhang Meng Qiu Qi Hua Jing-Yu He jun Li bai Du Ting-Hai Du Lin-Lin Niu Xue-jun Jiang Bo Cui Jiang-bin chen yang-Gan wang Hai-Rong wang Qin Yu Jing He Yi-Lin Mao xiao-Fang bin Yue Deng Yu-Dan Tian Qing-Hua Han Da-Jin Liu Li-Qin Duan Ming-jun Zhao Cui-Ying Zhang Hai-Ying Dai Ze-Hua Li Ying xiao You-Zhi Hu xiao-Yu Huang Kun Xing Xin Jiang Chao-Feng Liu Jing An Feng-Chun Li tao tao Jin-Fa Jiang Ying yang Yao-Rong Dong Lei Zhang guang Fu Ying Li Shu-Wei Huang Li-Ping Dou Lan-jun Sun Ying-Qiang Zhao Jie Li Yun Xia jun Liu Fan Liu Wen-Jin He Ying Li Jian-Cong Tan yang Lin Ya-bin Zhou Jian-Fei yang Guo-Qing Ma Hui-jun chen He-Ping Liu Zong-wu Liu Jian-Xiong Liu xiao-Jia Luo xiao-Hong bin Ya-Nan Yu Hai-Xia Dang bing Li Fei Teng wang-Min Qiao xiao-Long Zhu bing-Wei chen Qi-guang chen Chun-Ti Shen Yong-Yan wang Yun-Dai chen Zhong wang Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijingChina Department of Cardiology Chinese PLA General HospitalBeijingChina Department of Cardiology Dongfang Hospital Affiliated to Beijing University of Chinese MedicineBeijingChina Department of Geratology Peking University Third HospitalBeijingChina Department of Cardiology Xuan Wu HospitalCapital Medical UniversityBeijingChina Department of Cardiology Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijingChina Department of Cardiology First Affiliated Hospital of Henan University of Chinese MedicineZhengzhouHenanChina Department of Cardiology Wuhan University Renmin HospitalWuhanHubeiChina Department of Cardiology Wuhan University Zhongnan HospitalWuhanHubeiChina Affiliated Zhongshan Hospital of Dalian University DalianLiaoningChina Department of Cardiology Second Affiliated Hospital to Hunan University of Chinese MedicineChangshaHunanChina Department of Cardiology First Affiliated Hospital to Changchun University of Chinese MedicineChangchunJilinChina Department of Cardiology First Affiliated Hospital to Shanxi Medical UniversityTaiyuanShanxiChina Department of Cardiology Affiliated Hospital of Shanxi University of Chinese MedicineXianyangShanxiChina Department of Cardiology Changsha Central HospitalChangshaHunanChina Department of Cardiology Hubei Provincial Hospital of Traditional Chinese MedicineWuhanHubeiChina Department of Cardiology Shanxi Provincial People's HospitalXi'anShanxiChina Department of Cardiology Shanxi Province Hospital of Traditional Chinese MedicineXi'anShanxiChina Department of Cardiology Xi'an City Hospital of Traditional Chinese MedicineXi'anShanxiChina Department of Cardiology Shanghai Tongji HospitalShanghaiChina Department of Cardiology Shanghai Municipal Hospital of Traditional Chinese MedicineShanghaiChina Department of Cardiology The First Hospital of ChangshaChangshaHunanChina Department of Cardiology Xinhua Hospi

It's a challenge for detecting the therapeutic targets of a polypharmacological drug from variations in the responsed networks in thedfferentiated populations with complex diseases,as stable coronary heart ***,in an adaptive,31-center,randomized,double-blind trial invoving 920 patients with moderate symptomatic stable angina treated by 14-day Danhong injection(DHI),a kind of polyphamacological drug with high quality control,or placebo(0.9%saline),with 76-day following-up,we firstly confrmed that DHl couldincrease the proportion of patients with clinically significant changes on angina-frequency assessed by Seattle Angina Questionnaire(ASAQ-AF220)(12.78%at Day 30,95%confidence interval[C]5.86-19.71%,P=0.0003,13.82%at Day 6C0,95%CI 6.82-20.82%,P=0.0001and 8.95%at Day 90,95%CI 2.06-15.85%,P=0.01).We also found that there were no significant differences in new-onset major vascularevents(P=0.8502)and serious adverse events(P=0.9105)between DHl and *** performing the RNA sequencing in 62 selectedpatients,we developed a systemic modular approach tp identfy differentilly expressed modules(DEMs)of DHI with the Z_(summay)valueless than 0 compared with the control group,calculated by weighted gene co-expression network analysis(WGCNA),and sketched out thebasic framework on a modular map with 25 functional modules targeted by ***,the effective therapeutic module(ETM),defined as the highest corelation value with the phenotype alteration(SAQ-AF,the change in SAQ-AF at Day 30 from baseline)calculatedby WGCNA,was identifed in the population with the best effect(ASAQ-AF240),which is related to anticoagulation and regulation ofcholesterol *** assessed the modular flexbility of this ETM using the global topological D value based on Euclidean distance,which is corelated with phenotype alteration(r^(2):0.8204,P=0.019)by linear *** study identified the ant-angina therapeuticmodule in the effective population treated by the multi-target

关键词： angina injection sketch

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Back-n white neutron source at CSNS and its applications

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Nuclear Science and Techniques 2021年第1期32卷 95-104页

作者： Jing-Yu Tang Qi An Jiang-Bo bai Jie Bao Yu Bao Ping Cao Hao-Lei chen Qi-Ping chen Yong-Hao chen Zhen chen Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng ke-Qing Gao xiao-Long Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-cheng He yang Hong Yi-Wei Hu Han-Xiong Huang Xi-Ru Huang Hao-Yu Jiang Wei Jiang Zhi-Jie Jiang Han-tao Jing Ling Kang Bo Li Chao Li Jia-Wen Li Qiang Li xiao Li yang Li Jie Liu Rong Liu Shu-bin Liu Xing-Yan Liu Ze Long guang-Yuan Luan Chang-jun Ning Meng-chen Niu bin-bin Qi Jie Ren Zhi-Zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Jia Sun Zhi-Xin Tan Xin-Yi Tang bin-bin Tian Li-Jiao wang Peng-cheng wang Zhao-Hui wang Zhong-Wei Wen xiao-guang wu Xuan wu Li-Kun Xie xiao-Yun yang Yi-Wei yang Han Yi Li Yu tao Yu Yong-Ji Yu Guo-Hui Zhang Lin-Hao Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang Lu-Ping Zhou Zhi-Hao Zhou ke-jun Zhu 无 State key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China Department of Engineering and Applied Physics University of Science and Technology of ChinaHefei 230026China State key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China The CSNS Back-n Collaboration

Back-streaming neutrons from the spallation target of the China Spallation Neutron Source(CSNS)that emit through the incoming proton channel were exploited to build a white neutron beam facility(the so-called Back-n white neutron source),which was completed in March *** Back-n neutron beam is very intense,at approximately 29107 n/cm2/s at 55 m from the target,and has a nominal proton beam with a power of 100 kW in the CSNS-I phase and a kinetic energy of 1.6 GeV and a thick tungsten target in multiple slices with modest moderation from the cooling water through the *** addition,the excellent energy spectrum spanning from 0.5 eV to 200 MeV,and a good time resolution related tothe time-of-flight measurements make it a typical white neutron source for nuclear data measurements;its overall performance is among that of the best white neutron sources in the *** with advanced spectrometers,detectors,and application utilities,the Back-n facility can serve wide applications,with a focus on neutron-induced cross-sectional *** article presents an overview of the neutron beam characteristics,the experimental setups,and the ongoing applications at Backn.

关键词： White neutron source Nuclear data measurements Experimental setups Neutron applications

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谷氨酰胺对脂多糖致急性肺损伤大鼠肺组织核因子-κB的影响

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中华医学杂志 2008年第23期88卷 1648-1650页

作者：陈晓光白涛吴滨阳王俊科中国医科大学附属第一医院麻醉科沈阳110001

目的探讨谷氨酰胺对脂多糖致急性肺损伤大鼠肺组织核因子（NF）-κB和肺组织病理学变化的影响。方法静脉注射脂多糖（LPS）5mg／kg复制大鼠急性肺损伤模型。雄性SD大鼠50只，随机分为5组（n=10）：对照组（A组）；LPS组（B组）；C、D、... 详细信息

目的探讨谷氨酰胺对脂多糖致急性肺损伤大鼠肺组织核因子（NF）-κB和肺组织病理学变化的影响。方法静脉注射脂多糖（LPS）5mg／kg复制大鼠急性肺损伤模型。雄性SD大鼠50只，随机分为5组（n=10）：对照组（A组）；LPS组（B组）；C、D、E组为谷氨酰胺＋LPS组，分别于LPS注入前1h、LPS注入同时、LPS注入后1h，静脉注射谷氨酰胺0．75g／kg。于注射LPS后4h处死动物，测定肺组织NF-κB mRNA表达、肿瘤坏死因子-α（TNF-α）含量、超氧化物歧化酶（SOD）活性以及丙二醛（MDA）含量，HE染色光镜观察肺组织病理变化。结果与B组比较，C、D组不同程度逆转肺组织SOD活性的下降，抑制肺组织NF-κB mRNA、TNF-α及MDA水平的升高（P〈0．01），光镜下可见肺组织损伤明显减轻。E组上述指标改善不明显。结论谷氨酰胺早期给药对脂多糖性急性肺损伤起保护效应，其机制与抑制肺组织NF-κB mRNA的过度表达，从而抑制肺部炎症反应有关。

关键词：谷氨酰胺肿瘤坏死因子脂多糖类 NF-κB 急性肺损伤

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Measurement of the neutron total cross section of carbon at the Back-n white neutron beam of CSNS

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Nuclear Science and Techniques 2019年第9期30卷 73-82页

作者： Xing-Yan Liu Yi-Wei yang Rong Liu Jie Wen Zhong-Wei Wen Zi-Jie Han Zhi-Zhou Ren Qi An Huai-Yong bai Jie Bao Ping Cao Qi-Ping chen Yong-Hao chen Pin-Jing cheng Zeng-Qi Cui Rui-Rui Fan Chang-Qing Feng Min-Hao Gu Feng-Qin Guo Chang-Cai Han Guo-Zhu He Yong-cheng He Yue-Feng He Han-Xiong Huang Wei-Ling Huang Xi-Ru Huang xiao-Lu Ji Xu-yang Ji Hao-Yu Jiang Wei Jiang Han-tao Jing Ling Kang Ming-tao Kang Bo Li Lun Li Qiang Li xiao Li yang Li yang Li Shu-bin Liu guang-Yuan Luan Ying-Lin Ma Chang-jun Ning bin-bin Qi Jie Ren Xi-Chao Ruan Zhao-Hui Song Hong Sun xiao-yang Sun Zhi-Jia Sun Zhi-Xin Tan Hong-Qing Tang Jing-Yu Tang Peng-cheng wang Qi wang tao-Feng wang Yan-Feng wang Zhao-Hui wang Zheng wang Qing-Biao wu xiao-guang wu Xuan wu Li-Kun Xie Han Yi Li Yu tao Yu Yong-Ji Yu Guo-Hui Zhang Jing Zhang Lin-Hao Zhang Li-Ying Zhang Qing-Min Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Zhi-Yong Zhang Ying-Tan Zhao Liang Zhou Zu-Ying Zhou Dan-yang Zhu ke-jun Zhu Peng Zhu Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics State key Laboratory of Particle Detection and Electronics Chinese Academy of Sciences(CAS) Department of Modern Physics University of Science and Technology of China State key Laboratory of Nuclear Physics and Technology School of PhysicsPeking University key Laboratory of Nuclear Data China Institute of Atomic Energy Institute of High Energy Physics Chinese Academy of Sciences(CAS) Spallation Neutron Source Science Center University of South China Northwest Institute of Nuclear Technology Department of Engineering and Applied Physics University of Science and Technology of China Beihang University Xi’an Jiaotong University

To verify the performance of the neutron total cross-sectional spectrometer, the neutron total cross section of carbon is initially measured in the energy range of 1 eV to 20 MeV using the time-of-flight method. The measurement is performed at the Back-n white neutron source with a 76-m time-of-flight path using the China Spallation Neutron Source. A multilayer fast fission chamber with 235U and 238U is employed as the neutron detector. The diameter and thickness of the natural graphite sample are 70 mm and 40 mm, respectively. Signal waveforms are collected using a data acquisition system. Off-line data processing was used to obtain the neutron time-of-flight spectra and transmissions. The uncertainty of the counting statistics is generally approximately 3% for each bin in the energy range of 1–20 MeV. It is determined that the results for the neutron total cross section of carbon obtained using ^235U cells are in good agreement with the results obtained using 238U cells within limits of statistical uncertainty. Moreover, the measured total cross sections show good agreement with the broadening evaluated data.

关键词： CSNS Back-n white neutron source NTOX Neutron total cross section Carbon Multilayer fast fission chamber

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The influence of the Insight-HXMT/LE time response on timing analysis

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Research in Astronomy and Astrophysics 2021年第1期21卷 45-52页

作者： Deng-ke Zhou Shi-Jie Zheng Li-Ming Song Yong chen cheng-Kui Li xiao-Bo Li Tian-Xiang chen Wei-Wei Cui Wei chen Da-Wei Han Wei Hu Jia Huo Rui-Can Ma Mao-Shun Li Tian-Ming Li Wei Li He-Xin Liu Bo Lu Fang-jun Lu Jin-Lu Qu You-Li Tuo Juan wang Yu-Sa wang bai-yang wu guang-cheng xiao Yu-Peng Xu Yan-Ji yang Shu Zhang Zi-Liang Zhang xiao-Fan Zhao Yu-Xuan Zhu key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China College of Physics Jilin UniversityChangchun 130012China

The LE is the low energy telescope that is carried on *** uses swept charge devices(SCDs)to detect soft X-ray ***’s time response is caused by the structure of the *** theoretical analysis and Monte Carlo simulations we discuss the influence of LE time response(LTR)on the timing analysis from three aspects:the power spectral density,the pulse profile and the time *** the LTR,the value of power spectral density monotonously decreases with the increasing *** power spectral density of a sinusoidal signal reduces by a half at frequency 536 *** corresponding frequency for quasi-periodic oscillation(QPO)signals is 458 *** root mean square(RMS)of QPOs holds a similar *** the LTR,the centroid frequency and full width at half maxima(FWHM)of QPOs signals do not *** LTR reduces the RMS of pulse profiles and shifts the pulse *** the time domain,the LTR only reduces the peak value of the cross-correlation function while it does not change the peak position;thus it will not affect the result of the time *** considering the time lag obtained from two instruments and one among them is LE,a 1.18 ms lag is expected caused by the *** time lag calculated in the frequency domain is the same as that in the time domain.

关键词： instrumentation:detectors methods:data analysis methods:analytical

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Lifetime measurement for the 2^+1 state in^106Cd

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Chinese Physics C 2020年第9期44卷 76-82页

作者： Jian Zhong Ying-jun Ma xiao-guang wu Bao-Ji Zhu Cong-Bo Li guang-Sheng Li Yun Zheng Qi-Ming chen Chuang-Ye He Li-tao Deng Wen-Kui Zhou ke-Yan Ma Dong yang Hao Guo Jia-Qi wang Xian guang Ji Sun Hui-bin Sun Shi-Peng Hu Lin Gan Hai-Ge Zhao Qi Luo Zheng-Xin wu College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China China Institute of Atomic Energy Beijing 102413China College of Physics Jilin UniversityChangchun 621010China

The lifetime of the 2^+1 state in ^106Cd populated via the ^94Zr(^16O,4n)^106Cd reaction has been measured with the Recoil Distance Doppler Shift technique in combination with the Differential Decay Curve *** subtracting the contamination in the data,the mean lifetime of the I^π=2^+1633 keV state was determined as 9.9(12)*** B(E2)value calculated in this study is in good agreement with the experimental systematics and was compared to the shell model calculations.

关键词： lifetime measurement the Differential Decay Curve Method experimental systematics

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