检索结果-南通市图书馆

Silicon detector array for radioactive beam experiments at HIRFL-RIBLL

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2018年第11期29卷 271-278页

作者： Fang-Fang Duan Yan-Yun Yang Bi-Tao Hu Jian-Song Wang Zhi-Hao Gao xing-Quan Liu Dipikap Patel Peng Ma Jun-Bing Ma Shu-Ya Jin Zhen Bai Qiang Hu Guo Yang xin-xin Sun Nan-Ru Ma Li-Jie Sun Hui-Ming Jia xin-xing xu Cheng-Jian Lin School of Nuclear Science and Technology Lanzhou University Institute of Modern Physics Chinese Academy of Sciences Department of Nuclear Physics China Institute of Atomic Energy School of Physics and Astronomy Shanghai Jiao Tong University Department of Physics The University of Hong Kong

A new and innovative detector system based on a silicon strip detector dedicated to the study of the reaction induced by lighter radioactive beams is described *** detector system consists of five sets of three types of telescopes,which are successfully used to measure the angular distributions of both elastic scattering and breakup simultaneously, on the Radioactive Ion Beam Line in Lanzhou at Heavy Ion Research Facility in Lanzhou. This silicon detector array is used to measure the elastic scattering angular distributions of ^(11) Be on a ^(208) Pb target at E_(lab) = 140 and 209 MeV. A comparison of the Monte Carlo simulations with the experimental results shows a reasonable consistency.

关键词： Direct nuclear reactions Silicon detector array Radioactive ion beams Monte Carlo simulation

Characterization of CIAE developed double-sided silicon strip detector for charged particles

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2018年第5期29卷 98-103页

作者： xin-xing xu Fanurs C.E.Teh Cheng-Jian Lin Jenny Lee Feng Yang Zhao-Qiao Guo Tian-Shu Guo Li-Jie Sun xin-Zhi Teng Jia-Jian Liu Peng-Jie Li Peng-Fei Liang Lei Yang Nan-Ru Ma Hui-Ming Jia Dong-Xi Wang Sylvain Leblond Taras Lokotko Qing-Qing Zhao Huan-Qiao Zhang China Institute of Atomic Energy Beijing 102413China Department of Physics The University of Hong KongPokfulam RoadHong KongChina College of Physics and Technology Guangxi Normal UniversityGuilin 541004China Beijing Kelixing Photoelectric Technology Co. Ltd.Beijing 102413China

A double-sided silicon strip detector(DSSD)with active area of 48 mm x 48 mm and thickness of300μm has been developed. Each side of DSSD consists of48 strips, each with width of 0.9 mm and inter-strip separation of 0.1 mm. Electrical properties and detection performances including full depletion bias voltage, reverse leakage current, rise time, energy resolution and cross talk have been studied. At a bias of 80 V, leakage current in each strip is less than 15 nA, and rise time for alpha particle at 5157 keV is approximately 15 ns on both *** energy resolutions have been achieved with0.65-0.80% for the junction strips and 0.85-1.00% for the ohmic strips. The cross talk is found to be negligible on both sides. The overall good performance of DSSD indicates its readiness for various nuclear physics experiments.

关键词： Double-sided silicon strip detector P-stop Detection performance Cross talk

Prognostic model for esophagogastric variceal rebleeding after endoscopic treatment in liver cirrhosis: A Chinese multicenter study

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2025年第2期31卷 85-101页

作者： Jun-Yi Zhan Jie Chen Jin-Zhong Yu Fei-Peng xu Fei-Fei xing De-xin Wang Ming-Yan Yang Feng xing Jian Wang Yong-Ping Mu Cell Biology Laboratory Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Institute of Liver Diseases Shanghai Academy of Chinese MedicineShanghai 201203China Clinical Key Laboratory of Traditional Chinese Medicine of Shanghai Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Key Laboratory of Liver and Kidney Disease of the Ministry of Education Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Gastroenterology and Hepatology Zhongshan Hospital Affiliated to Fudan UniversityShanghai 200032China Shanghai Institute of Liver Disease Fudan UniversityShanghai 200032China Evidence-Based Medicine Center Fudan UniversityShanghai 200032China Department of Gastrointestinal Endoscopy Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China Department of Hepatology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai 201203China

BACKGROUND Rebleeding after recovery from esophagogastric variceal bleeding(EGVB)is a severe complication that is associated with high rates of both incidence and *** its clinical importance,recognized prognostic models that can effectively predict esophagogastric variceal rebleeding in patients with liver cirrhosis are *** To construct and externally validate a reliable prognostic model for predicting the occurrence of esophagogastric variceal *** This study included 477 EGVB patients across 2 cohorts:The derivation cohort(n=322)and the validation cohort(n=155).The primary outcome was rebleeding events within 1 *** least absolute shrinkage and selection operator was applied for predictor selection,and multivariate Cox regression analysis was used to construct the prognostic *** validation was performed with bootstrap *** assessed the discrimination,calibration and accuracy of the model,and performed patient risk *** Six predictors,including albumin and aspartate aminotransferase concentrations,white blood cell count,and the presence of ascites,portal vein thrombosis,and bleeding signs,were selected for the rebleeding event prediction following endoscopic treatment(REPET)*** predicting rebleeding within 1 year,the REPET model ex-hibited a concordance index of 0.775 and a Brier score of 0.143 in the derivation cohort,alongside 0.862 and 0.127 in the validation ***,the REPET model revealed a significant difference in rebleeding rates(P<0.01)between low-risk patients and intermediate-to high-risk patients in both *** We constructed and validated a new prognostic model for variceal rebleeding with excellent predictive per-formance,which will improve the clinical management of rebleeding in EGVB patients.

关键词： Esophagogastric variceal bleeding Variceal rebleeding Liver cirrhosis Prognostic model Risk stratification Secondary prophylaxis

Resting-state brain network remodeling after different nerve reconstruction surgeries:a functional magnetic resonance imaging study in brachial plexus injury rats

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1495-1504页

作者： Yunting Xiang Xiangxin xing xuyun Hua Yuwen Zhang xin xue Jiajia Wu Mouxiong Zheng He Wang Jianguang xu School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghaiChina Engineering Research Center of Traditional Chinese Medicine Intelligent Rehabilitation Ministry of EducationShanghaiChina Department of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Department of Traumatology and Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Institute of Science and Technology for Brain-Inspired Intelligence Fudan UniversityShanghaiChina Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence(Fudan University) Ministry of EducationShanghaiChina Human Phenome Institute Fudan UniversityShanghaiChina

Distinct brain remodeling has been found after different nerve reconstruction strategies,including motor representation of the affected ***,differences among reconstruction strategies at the brain network level have not been *** study aimed to explore intranetwork changes related to altered peripheral neural pathways after different nerve reconstruction surgeries,including nerve repair,endto-end nerve transfer,and end-to-side nerve ***–Dawley rats underwent complete left brachial plexus transection and were divided into four equal groups of eight:no nerve repair,grafted nerve repair,phrenic nerve end-to-end transfer,and end-to-side transfer with a graft sutured to the anterior upper ***-state brain functional magnetic resonance imaging was obtained 7 months after *** independent component analysis algorithm was utilized to identify group-level network components of interest and extract resting-state functional connectivity values of each voxel within the *** in intra-network resting-state functional connectivity were compared among the *** muscle reinnervation was assessed by behavioral observation(elbow flexion)and *** results showed that alterations in the sensorimotor and interoception networks were mostly related to changes in the peripheral neural *** repair was related to enhanced connectivity within the sensorimotor network,while end-to-side nerve transfer might be more beneficial for restoring control over the affected limb by the original motor *** thalamic-cortical pathway was enhanced within the interoception network after nerve repair and end-to-end nerve *** areas related to cognition and emotion were enhanced after end-to-side nerve *** study revealed important brain networks related to different nerve *** networks may be potential targets for enhancing motor recovery.

关键词： brain functional networks end-to-end nerve transfer end-to-side nerve transfer independent component analysis nerve repair peripheral plexus injury resting-state functional connectivity

Misdiagnostic analysis of clinically diagnosed severe acute respiratory syndrome after following up 197 convalescent patients

在线全文

学校读者我要写书评

暂无评论

中华医学杂志(英文版) 2005年第17期 81-83页

作者： LIU You-ning, TIAN Qing, HU Hong, XIE Li-xin, FAN Bao-xing, xu Hong-min and CHEN Wei-junDepartment of Respiratory Medicine, Chinese PLA General Hospital, Beijing 100853, ChinaBeijing BGI-GBI Biotech Co. Ltd, Beijing 101300, China

Complete response of gallbladder cancer treated with gemcitabine and cisplatin chemotherapy combined with durvalumab:A case report and review of literature

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2025年第1期17卷 226-232页

作者： Kai Chen xu Feng Yuan Shi xin-Lin Li Zheng-Rong Shi Xiang Lan Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND Gallbladder cancer(GBC)is the most common and aggressive subtype of biliary tract cancer(BTC)and has a poor prognosis.A newly developed regimen of gemcitabine,cisplatin,and durvalumab shows promise for the treatment of advanced ***,the efficacy of this treatment for GBC remains *** SUMMARY In this report,we present a case in which the triple-drug regimen exhibited marked effectiveness in treating locally advanced GBC,thus leading to a long-term survival benefit.A 68-year-old man was diagnosed with locally advanced GBC,which rendered him ineligible for curative *** three cycles of therapy,a partial response was *** one year of combined therapy,a clinical complete response was successfully *** maintenance therapy with durvalumab monotherapy resulted in a disease-free survival of 9 months for the *** patient experienced tolerable toxicities of reversible grade 2 nausea and *** adverse events were observed in the patient throughout the entirety of the *** The combination of gemcitabine and cisplatin chemotherapy with durvalumab was proven to be an effective treatment approach for advanced GBC,with manageable adverse *** research is warranted to substantiate the effectiveness of the combined regimen in the context of GBC.

关键词： Gallbladder cancer Chemotherapy Immunotherapy Durvalumab Complete response Case report

Implantation-decay method to study the β-delayed charged particle decay

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2018年第7期29卷 145-151页

作者： Yu-Ting Wang De-Qing Fang xin-xing xu Li-Jie Sun Kang Wang Peng-Fei Bao Zhen Bai Xi-Guang Cao Zhi-Tao Dai Bing Ding Wan-Bing He Mei-Rong Huang Shi-Lun Jin Cheng-Jian Lin Ming Lu Long-Xiang Liu Yong Li Peng Ma Jun-Bing Ma Jian-Song Wang Shi-Tao Wang Shao-Qiang Ye Yan-Yun Yang Cheng-Long Zhou Ming-Hui Zhao Huan-Qiao Zhang Yu-Gang Ma Wen-Qing Shen Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of the Chinese Academy of Sciences Beijing 100049China Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201203China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

In this paper,the implantation-decay method is introduced to study the β-delayed charged particle decay.A silicon detector array was used for the implantation of the incident beams and for the detection of the emitted *** experimental measurement on the β-delayed particle emission from ^(22)Al was used to demonstrate the *** half-life value,charged particle spectroscopy,γ ray spectrum,and γ particle coincidence for the decay process were obtained and compared with previous experimental results for ^(22)*** results show that the implantation-decay method,using a silicon detector array,is a suitable experimental method to study the β-delayed charged particle decay for proton-rich nuclei.

关键词：腐烂粒子培植学习试验性光谱学半衰期原子核

Predicting colorectal adenomatous polyps in patients with chronic liver disease: A novel nomogram

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2025年第2期31卷 71-84页

作者： Yu-Qin Li Wen-Tao Kuai Lin Chen Ming-Hui Zeng xue-Mei Tao Jia-xin Han Yue-Kui Wang Lian-xin xu Li-Ying Ge Yong-Gang Liu Shuang Li Liang xu Yu-Qiang Mi Clinical School of the Second People’s Hospital Tianjin Medical UniversityTianjin 300192China Department of Hepatology Tianjin Second People’s HospitalTianjin 300192China Department of Pathology Clinical School of the Second People’s HospitalTianjin 300110China Endoscopy Center Tianjin Second People’s HospitalTianjin 300192China

BACKGROUND Colorectal polyps are commonly observed in patients with chronic liver disease(CLD)and pose a significant clinical concern because of their potential for *** To explore the clinical characteristics of colorectal polyps in patients with CLD,a nomogram was established to predict the presence of adenomatous polyps(AP).METHODS Patients with CLD who underwent colonoscopy at Tianjin Second People’s Hospital from January 2020 to May 2023 were *** data including laboratory results,colonoscopy findings,and pathology reports were *** variables for the nomogram were identified through least absolute shrinkage and selection operator regression,followed by multivariate logistic *** performance of the model was evaluated using the area under the receiver area under curve,as well as calibration curves and decision curve *** The study enrolled 870 participants who underwent colonoscopy,and the detection rate of AP in patients with CLD was 28.6%.Compared to individuals without polyps,six risk factors were identified as predictors for AP occurrence:Age,male sex,body mass index,alcohol consumption,overlapping metabolic dysfunction-associated steatotic liver disease,and serum ferritin *** novel nomogram(AP model)demonstrated an area under curve of 0.801(95%confidence interval:0.756-0.845)and 0.785(95%confidence interval:0.712-0.858)in the training and validation *** curves indicated good agreement among predicted and actual probabilities(training:χ^(2)=11.860,P=0.157;validation:χ^(2)=7.055,P=0.530).The decision curve analysis underscored the clinical utility of the nomogram for predicting the risk of *** The AP model showed reasonable accuracy and provided a clinical foundation for predicting the occurrence of AP in patients with CLD,which has a certain predictive value.

关键词： Metabolic dysfunction associated steatotic liver disease Fatty liver Chronic liver disease Colorectal adenomas Hepatitis Risk factors

经尿道等离子电切术治疗侵犯肌层膀胱肿瘤54例疗效分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

实用肿瘤杂志 2011年第6期26卷 639-640页

作者：李鑫赵星星许芳冀占岭胡琦李树森包头市肿瘤医院泌尿肿瘤外科内蒙古包头014030 包头医学院职业技术学院内蒙古包头014030

目的探讨经尿道等离子电切术(TURis-Bt)治疗侵犯肌层膀胱肿瘤的疗效。方法对已侵犯肌层的膀胱肿瘤101例,分别采用TURis-Bt术54例,切除肿瘤至膀胱外脂肪层,获得随访50例,随访时间24-60月;采用膀胱部分切除术47例,获得随访44例,随访时间1... 详细信息

目的探讨经尿道等离子电切术(TURis-Bt)治疗侵犯肌层膀胱肿瘤的疗效。方法对已侵犯肌层的膀胱肿瘤101例,分别采用TURis-Bt术54例,切除肿瘤至膀胱外脂肪层,获得随访50例,随访时间24-60月;采用膀胱部分切除术47例,获得随访44例,随访时间1-60月。两组病例术后常规用吡柔比星进行膀胱灌注化疗。结果 TURis-Bt复发率29.6%(16/54),膀胱部分切除复发率29.8%(14/47),两组对比,肿瘤复发率差异无统计学意义(P﹥0.05)。结论对已侵犯肌层的膀胱肿瘤,TURis-Bt可作为泌尿外科医生选择的一种手术方法,特别适用于高危患者或不愿意接受开放手术(包括不愿意接受根治性全膀胱切除术)的患者。

关键词：膀胱肿瘤/外科学电外科手术离子膀胱切除术复发随访研究治疗结果