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Evolution of incommensurate superstructure and electronic structure with Pb substitution in(Bi2-xPbx)Sr2CaCu2O8+δ superconductors

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Chinese Physics B 2019年第7期28卷 102-110页

作者： Jing liu lin Zhao Qiang Gao Ping Ai Lu Zhang Tao Xie( Jian-Wei huang Ying Ding Cheng Hu hong-Tao Yan Chun-Yao Song Yu Xu Cong li Yong-Qing Cai hong-Tao Rong Ding-Song Wu guo-Dong liu Qing-Yan Wang Yuan huang Feng-Feng Zhang Feng Yang Qin-Jun Peng Shi-liang li Huai-Xin Yang Jian-Qi li Zu-Yan Xu Xing-jiang Zhou Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China Songshan Lake Materials Laboratory Dongguan 523808 China Collaborative Innovation Center of Quantum Matter Beijing 100871 China

High-quality Bi2-xPbxSr2 CaCu2O8+δ(Bi2212) single crystals have been successfully grown by the traveling solvent floating zone technique with a wide range of Pb substitution(x = 0–0.8).The samples are characterized by transmission electron microscope(TEM) and measured by high resolution laser-based angle-resolved photoemission spectroscopy(ARPES) with different photon energies.A systematic evolution of the electronic structure and superstructure with Pb substitution has been revealed for the first *** superstructure shows a significant change with Pb substitution and the incommensurate modulation vector(Q) decreases with increasing Pb *** the meantime, the superstructure intensity from ARPES measurements also decreases dramatically with increasing Pb *** superstructure in Bi2212 can be effectively suppressed by Pb substitution and it nearly disappears with a Pb substitution of x = *** also find that the superstructure bands in ARPES measurements depend sensitively on the photon energy of lasers used;they can become even stronger than the main band when using a laser photon energy of 10.897 *** results provide important information on the origin of the incommensurate superstructure and its control and suppression in bismuth-based high temperature superconductors.

关键词： Bi2-xPbxSr2CaCu2O8+δ superstructure electronic structure angle-resolved photoemission spectroscopy(ARPES) modulation

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Advances in nuclear detection and readout techniques

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Nuclear Science and Techniques 2023年第12期34卷 281-358页

作者： Rui He Xiao‑Yang Niu Yi Wang hong‑Wei liang hong‑Bang liu Ye Tian hong‑lin Zhang Chao‑Jie Zou Zhi‑Yi liu Yun‑Long Zhang Hai‑Bo Yang Ju huang hong‑Kai Wang Wei‑Jia Han Bei Cao Gang Chen Cong Dai li‑Min Duan Rui‑Rui Fan Fang‑Fa Fu Jian‑Hua guo Dong Han Wei jiang Xian‑Qin li Xin li Zhuo‑Dai li Yu‑Tie liang Shun liao De‑Xu lin Cheng‑Ming liu guo‑Rui liu Jun‑Tao liu Ze Long Meng‑Chen Niu Hao Qiu Hu Ran Xiang‑Ming Sun Bo‑Tan Wang Jia Wang Jin‑Xiang Wang Qi‑lin Wang Yong‑Sheng Wang Xiao‑Chuan Xia Hao‑Qing Xie He‑Run Yang hong Yin hong Yuan Chun‑Hui Zhang Rui‑Guang Zhao Ran Zheng Cheng‑Xin Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China Key Laboratory of Particle and Radiation Imaging Department of Engineering PhysicsTsinghua UniversityBeijing 100084China School of Integrated Circuits Dalian University of TechnologyDalian 116020China Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and TechnologyGuangxi UniversityNanning 530004China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Radiation Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Electronic Engineering School Heilongjiang UniversityHarbin 150080China Spallation Neutron Source Science Center Dongguan 523803China Micro‑electronic Department Harbin Institute of TechnologyHarbin 150001China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210034China liaoning Academy of Materials Shenyang 110167China Istituto Nazionale di Fisica Nucleare Sezione di PerugiaPerugiaItaly School of Mathematics and Physics Chengdu University of TechnologyChengdu 620035China PLAC Key Laboratory of Quark and Lepton Physics(MOE)Central China Normal UniversityWuhan 430079China School of Electronics and Information Northwestern Polytechnical UniversityXi’an 710129China State Key Lab of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China School of Computer Science Northwestern Polytechnical UniversityXi’an 710129China

“A Craftsman Must Sharpen His Tools to Do His Job,”said *** detection and readout techniques are the foundation of particle physics,nuclear physics,and particle astrophysics to reveal the nature of the ***,they are being increasingly used in other disciplines like nuclear power generation,life sciences,environmental sciences,medical sciences,*** article reviews the short history,recent development,and trend of nuclear detection and readout techniques,covering Semiconductor Detector,Gaseous Detector,Scintillation Detector,Cherenkov Detector,Transition Radiation Detector,and Readout *** explaining the principle and using examples,we hope to help the interested reader underst and this research field and bring exciting information to the community.

关键词： Silicon detector Wide bandgap detector Time projection chamber(TPC) Multigap resistive plate chamber detector(MRPC) Scintillation detector Calorimeters Cherenkov detector Transition radiation detector Artificial intelligence Trigger-less readout

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Variation in STAT4 is associated with systemic lupus erythematosus in Chinese Northern Han population

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Chinese Medical Journal 2010年第22期123卷 3173-3177页

作者： SU Yin ZHAO Yi liU Xu guo Jian-ping jiang Quan liU Xiang-yuan ZHANG Feng-chun ZHENG Yi li Xiao-xia SONG Hui huang Ci-bo huang Yan-hong WANG Tian PAN Si-si li Chun liU Xia ZHU Lei ZHANG Chun-fang li Zhan-guo Department of Rheumatology & Immunology/Clinical Immunology Center Peking University People's Hospital Beijing 100044 China Department of Clinical Epidemiology Peking University People's Hospital Beijing 100044 China Department of Rheumatology & Immunology Guang'anmen Hospital China Academy of Chinese Medical Sciences Beijing 100053 China Department of Rheumatology & Immunology Peking University Third Hospital Beijing 100191 China Department of Rheumatology & Immunology Peking Union Medical College Hospital Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100730 China Department of Rheumatology & Immunology Beijing Chaoyang Hospital Capital Medical University Beijing 100020 China Department of Rheumatology & Immunology Xuanwu Hospital Capital Medical University Beijing 100053 China Department of Rheumatology & Immunoiogy Beijing Jishuitan Hospital Beijing 100035 China Department of Rheumatology & Immunology Beijing Hospital Beijing 100730 China Department of Rheumatology & Immunology Beijing Tongren Hospital Capital Medical University Beijing 100730 China

Background Recent studies have identified signal transducer and activator of transcription 4 （STAT4） as a susceptibility gene for systemic lupus erythematosus （SLE） in different populations. In order to examine whether the allele distribution of the single nucleotide polymorphism （SNP） in gene STAT4 rs7574865 in patients with SLE is different from those of healthy controls in Chinese Northern Han population, we investigated whether the variants of STAT4 rs7574865 were associated with any specific clinical features of SLE. Methods We genotyped SNPs in STAT4 rs7574865 in 252 patients with SLE and 497 healthy controls. All subjects were from the Northern part of Chinese Han population. The genotypes in rs7574865 were determined by polymerase chain reaction （PCR） and consequence direct sequencing of PCR products in the DNA samples. Results There was a significant difference in distribution of the SNPs in rs7574865 between the SLE patients and healthy controls. Compared with healthy controls, there was a significant correlation between TT genotypes in rs7574865 and the risk of SLE when GG genotype was used as a reference genotype after adjusting for gender and age. The frequency of T allele in the SLE patients was strongly significantly higher than that of healthy controls. Furthermore, there was a significant difference in the distribution of SNP in rs7574865 between male and female SLE patients, when compared with healthy controls. The frequency of T allele in rs7574865 in male patients was significantly higher than that of male healthy controls or female patients. There was no significant correlation between the frequencies of T allele in STAT4 rs7574865 and the clinical features of SLE. Conclusions The SNP rs7574865 in STAT4 is strongly associated with risk of SLE in the Chinese Northern Hart population. The TT genotype and T allele in STAT4 rs7574869 are susceptibility factors for SLE, especially for male SLE patients.

关键词： STAT4 systemic lupus erythematosus genetic association single-nucleoticle polymorphisms

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饱和区中非水相有机物溶解的实验研究

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化学工程 2008年第4期36卷 49-52页

作者：李洪李鑫钢徐世民黄国强姜斌天津大学化工学院天津300072 精馏技术国家工程研究中心天津300072

地下环境中非水相有机污染物通常会成为地下水污染的持久性污染源,因而更好地了解非水相污染物溶解的过程对于地下水污染和治理会有很大的帮助。采用实验室二维砂箱模拟饱和区地下水流动条件下,非水相甲基叔丁基醚溶解过程,主要考察非... 详细信息

地下环境中非水相有机污染物通常会成为地下水污染的持久性污染源,因而更好地了解非水相污染物溶解的过程对于地下水污染和治理会有很大的帮助。采用实验室二维砂箱模拟饱和区地下水流动条件下,非水相甲基叔丁基醚溶解过程,主要考察非水相液体初始饱和度、分布区域大小和地下水流速对于溶解过程的影响。实验结果表明,非水相溶解过程初期水相中质量浓度很高,接近于溶解度,之后逐渐降低进入拖尾期;非水相初始饱和度越高流出质量浓度出现最高点的时间越晚,完全溶解所需时间越长;地下水流速提高会使平衡溶解期变短,而且会减少完全溶解所需的时间;非水相液体源范围越大,出口峰值质量浓度越高,但是峰值出现时间越晚。

关键词：非水相液体甲基叔丁基醚地下水溶解

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Therapeutic experience of an 89-year-old high-risk patient with incarcerated cholecystolithiasis:A case report and literature review

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World Journal of Clinical Cases 2020年第20期8卷 4908-4916页

作者： Zong-Ming Zhang Chong Zhang Zhuo liu li-Min liu Ming-Wen Zhu Yue Zhao Bai-jiang Wan Hai Deng Hai-Yan Yang Jia-hong liao hong-Yan Zhu Xue Wen li-li liu Man Wang Xiao-Ting Ma Miao-MiaoZhang Jiao-Jiao liu Tian-Tian liu Niu-Niu huang Pei-Ying Yuan Yu-Jiao Gao Jing Zhao Xi-Ai guo Fangliao Feng-Yuan li Xue-Ting Wang Rui-Jiao Yuan Fang Wu Department of General Surgery Beijing Electric Power HospitalState Grid Corporation of ChinaCapital Medical UniversityBeijing 100073China Department of Pathology Beijing Electric Power HospitalState Grid Corporation of ChinaCapital Medical UniversityBeijing 100073China

BACKGROUND The global pandemic of coronavirus disease 2019 pneumonia poses a particular challenge to the emergency surgical treatment of elderly patients with high-risk acute abdominal *** patients are a high-risk group for surgical *** the incarceration of gallstones cannot be relieved,emergency surgery is *** SUMMARY We report an 89-year-old male patient with acute gangrenous cholecystitis and septic shock induced by incarcerated *** had several coexisting,high-risk underlying diseases,had a history of radical gastrectomy for gastric cancer,and was taking aspirin before the ***,he underwent emergency laparoscopic cholecystectomy,with maintenance of postoperative heart and lung function,successfully recovered,and was discharged on day 8 after the *** Emergency surgery for elderly patients with acute abdominal disease is safe and feasible during the coronavirus disease 2019 pandemic,the key is to abide strictly by the hospital's epidemic prevention regulations,fully implement the epidemic prevention procedure for emergency surgery,fully prepare before the operation,accurately perform the operation,and carefully manage the patient postoperatively.

关键词： Extremely elderly patient Cholecystolithiasis incarceration Acute gangrenous cholecystitis Acute abdominal diseases COVID-19 Case report

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Realization of low-energy type-Ⅱ Dirac fermions in(Ir_(1-x)Pt_x)Te_2 superconductors

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Chinese Physics B 2019年第3期28卷 71-76页

作者： Bin-Bin Fu Chang-jiang Yi Zhi-Jun Wang Meng Yang Bai-Qing Lv Xin Gao Man li Yao-Bo huang hong-Ming Weng You-guo Shi Tian Qian hong Ding Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China shanghai Synchrotron Radiation Facility Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Renmin University of ChinaBeijing 100872China Songshan Lake Materials Laboratory Dongguan 523808China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China

Topological Dirac semimetals(DSMs) present a kind of topologically nontrivial quantum state of matter, which has massless Dirac fermions in the bulk and topologically protected states on certain surfaces. In superconducting DSMs, the effects of their nontrivial topology on superconducting pairing could realize topological superconductivity in the bulk or on the surface. As superconducting pairing takes place at the Fermi level E_F, to make the effects possible, the Dirac points should lie in the vicinity of E_F so that the topological electronic states can participate in the superconducting paring. Here,we show using angle-resolved photoelectron spectroscopy that in a series of(Ir_(1-x)Pt_x)Te_2 compounds, the type-Ⅱ Dirac points reside around E_F in the superconducting region, in which the bulk superconductivity has a maximum T_c of ～ 3 *** realization of the coexistence of bulk superconductivity and low-energy Dirac fermions in(Ir_(1-x)Pt_x)Te_2 paves the way for studying the effects of the nontrivial topology in DSMs on the superconducting state.

关键词： type-Ⅱ Dirac semimetal superconductor topological superconducting angle-resolved photoemission spectroscopy(ARPES) substitution

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Epidemiological Study of Sepsis in China： Protocol of a Cross-sectional Survey

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Chinese Medical Journal 2016年第24期129卷 2967-2973页

作者： Yi Yang Jian-Feng Xie Kai-jiang Yu Chen Yao Jian-guo li Xiang-Dong Guan Jing Yan Xiao-Chun Ma Yan Kang Cong-Shan Yang Xiao-Qing Yao hong-Cai shang Hai-Bo Qiu Department of Critical Care Medicine Zhongda Hospital School of Medicine Southeast University Nanjing Jiangsu 210009 China Department of Critical Care Medicine The Third Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150040 China Clinical Research Center Peking University First Hospital Beijing 100034 China Department of Critical Care Medicine Zhongnan Hospital Wuhan University Wuhan Hubei 430071 China Department of Surgical Critical Care Medicine The First Affiliated Hospital of Sun Yat-sen University Guangzhou Guangdong 510080 China Department of Critical Care Medicine Zhejiang Hospital Hangzhou Zhejiang 310030 China Department of Critical Care Medicine The First Affiliated Hospital of China Medical University Shenyang Liaoning 110001 China Department of Critical Care Medicine West China Hospital Sichuan University Chengdu Sichuan 610041 China Tianjin Chase Sun Pharmaceutical Co. Ltd. Tianjin 300170 China Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing Dongzhimen Hospital Beijing University of Chinese Medicine Beijing 100700 China

Background： Sepsis is the leading cause of death among critically ill patients. Herein, we conducted a national survey to provide data on epidemiology and treatment of sepsis in the clinical practice in China, which has no detailed epidemiological data available on sepsis. Methods： This was a prospective cross-sectional survey from December 1, 2015 to January 31, 2016 in all provinces/municipalities of the mainland of China. The primary outcome of this study was the incidence of sepsis, and the secondary outcome was its etiology in China. Patients with sepsis admitted to the Intensive Care Units were included in this study. The demographic, physiological, bacteriological, and therapeutic data of these patients were recorded. The incidence of sepsis was estimated using the data from the sixth census in China, reported by the Chinese National Health and Family Planning Commission and the National Bureau of Statistics as the standard population. The independent risk factors for increased mortality from sepsis were calculated. Conclusions： This study indicated the incidence and outcome of sepsis in China. It also showed the most common etiology of different sites and types of infection, which could guide empiric antibiotic therapy. Moreover, it provided information on the independent risk factors for increased mortality due to sepsis. The findings provide evidence to guide clinical management and may help improve the outcome in septic patients.

关键词： Epidemiology Incidence National Survey Outcome Sepsis

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An-Luo-Hua-Xian Pill Improves the Regression of liver Fibrosis in Chronic Hepatitis B Patients Treated with Entecavir

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Journal of Clinical and Translational Hepatology 2023年第2期11卷 304-313页

作者： Yi-Qi liu Chi Zhang Jia-Wen li li-Hua Cao Zhan-Qing Zhang Wei-Feng Zhao Qing-Hua shang Da-Zhi Zhang An-lin Ma Qing Xie hong-lian Gui guo Zhang Ying-Xia liu Jia shang Shi-Bin Xie Jun li Xu-Qing Zhang Zhi-Qiang Zou Yu-Ping Chen Zong Zhang Ming-Xiang Zhang Jun Cheng Fu-Chun Zhang li-Hua huang Jia-Bin li Qing-Hua Meng Hai-Bin Yu Yu-Qiang Mi Yan-Zhong Peng Zhi-Jin Wang li-Ming Chen Fan-Ping Meng Wan-Hua Ren Lang Bai Yi-Lan Zeng Rong Fan Xian-Zhi Lou Wei-Feng liang Hui liu Hui Zhuang hong Zhao Gui-Qiang Wang Department of Infectious Disease Center for Liver DiseasePeking University First HospitalBeijingChina Department of Hepatology The Third Hospital of QinhuangdaoQinhuangdaoHebeiChina Department of Infectious Disease Shanghai Public Health Clinical CenterFudan UniversityShanghaiChina Department of Infectious Disease Xinxiang Medical University Affiliated Third HospitalXinxiangHenanChina No.88 Hospital of Chinese People’s liberation Army(PLA) JinanShandongChina Department of Infectious Diseases The Second Affiliated Hospital of Chongqing Medical UniversityChongqingChina Department of Infectious Disease China-Japan Friendship HospitalBeijingChina Department of Infectious Diseases Ruijin HospitalSchool of MedicineShanghai Jiaotong UniversityShanghaiChina Department of Gastroenterology The People’s Hospital of Guangxi Zhuang Autonomous RegionNanningGuangxiChina Department of Infectious Diseases The Third People’s Hospital of ShenzhenShenzhenGuangdongChina Department of Infectious Diseases The People’s Hospital of Henan ProvinceZhengzhouHenanChina Department of Infectious Disease The Third Affiliated Hospital of Sun-Yat Sen UniversityGuangzhouGuangdongChina Department of Infectious Diseases Jiangsu Province HospitalThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina Department of Infectious Diseases The Southwest Hospital of Army Medical UniversityChongqingChina Yantai Infectious Diseases Hospital YantaiShandongChina Department of Hepatology Baoding Infectious Diseases HospitalBaodingHebeiChina Department of Integrated Traditional Chinese Medicine(TCM)and Western Medicine Jinan Infectious Diseases HospitalShandong UniversityJinanShandongChina Department of Integrated TCM and Western Medicine in Hepatology The Sixth People’s Hospital of ShenyangShenyangLiaoningChina Beijing Ditan Hospital Capital Medical UniversityBeijingChina Department of Infectious Diseases Guangzhou Eighth People’s HospitalGuangzhou Medical UniversityGuangzhouGuangdon

Background and Aims:Chronic hepatitis B(CHB)can cause liver fibrosis and lead to cirrhosis and *** the effectiveness of antiviral therapy to reverse liver fibrosis is limited,We aimed to evaluate the effect of An-Luo-Hua-Xian pill(ALHX)on fibrosis regression in CHB patients treated with entecavir(ETV).Methods:Treatment-naïve patients with CHB were randomly treated with ETV alone or combined with ALHX(ETV+ALHX)between October 1,2013 and December 31,***,laboratory,and liver histology data before and after 78 weeks of treatment were *** Ishak fibrosis score(F)was used and fibrosis regression required a decrease in F of≥1 after ***:A total of 780 patients were enrolled,and 394 with a second liver biopsy after treatment were included in the per-protocol population,132 in ETV group and 262 in ETV+ALHX *** 78 weeks of treatment,the fibrosis regression rate in the ETV+ALHX group was significantly higher than that of the ETV group at baseline F≥3 patients:124/211(58.8%)vs.45/98(45.9%),p=*** percentage of patients with a decreased liver stiffness measurement(LSM)was higher in the ETV+ALHX group:156/211(73.9%)vs.62/98(63.%),p=*** regression analysis showed that ETV combined with ALHX was associated with fibrosis regression[odds ratio(OR)=1.94,p=0.018],and a family history of hepatocellular carcinoma was on the contrary.(OR=0.41,p=0.031).Conclusions:ETV combined with ALHX increased liver fibrosis regression in CHB patients.

关键词： Chronic hepatitis B liver fibrosis Regression Randomized controlled trial

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Administration Rule of Hyperlipidemic Acute Pancreatitis Based on Data Mining

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World Journal of Integrated Traditional and Western Medicine 2022年第2期8卷 31-40页

作者： guo ling-long CHEN Yu-yi li Jing-wei jiang Xiao-yan ZHANG Chun-hong huang Bin The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine Guangzhou510000China Department of Spleen and Stomach Shenzhen Hospital of Traditional Chinese MedicineShenzhen518000China

Objective:To excavate the medical pattern of hyperlipidemic acute pancreatitis based on Chinese Medicine Inheritance Assistant Platform software,hope to offer ideas for the treatment of the ***:Inpatient cases admitted to the Department of Gastroenterology of Shenzhen Hospital of Traditional Chinese Medicine for HLAP from September 2013 to June 2020 were collected,information on evidence patterns and formulations was extracted,an Excel database was established and professional terms were standardized,and data mining methods such as association rules and entropy clustering of complex systems were used to analyze medical ***:The main symbols of HLAP include abdominal pain,abdominal distinction,vomiting,fever,*** common used drags include Immature Orange Fruit,Baical Skullcap Root,Rhubarb and Chinese Thorowax Root,*** main drug pairs based on association rule analysis are"Baical Skullcap Root,Immature Orange Fruit","Rhubarb,Immature Orange Fruit","Baical Skullcap Root,Rhubarb,Immature Orange Fruit",etc,and 14 drug core combinations and 7 new formulations were ***:The main synthesis of HLAP are solid-heat knots in the internal organs and dam-heat in the liver and gallbladder,and the formula is based on Da-chai-hu Decoction,the clinical treatment is based on attacking stagnation,activating blood circulation and removing dampness,which can offer reference for the clinical treatment of the disease.

关键词： Hyperlipidemic acute pancreatitis Data mining Chinese medicine inheritance assistant platform Medical rules

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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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