检索结果-南通市图书馆

Magnetization of Coupled Ultrathin Ferromagnetic Films

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2002年第7期38卷 107-112页

作者： WANG Huai-yu ZHOU yun-song WANG Chong-yu Department of Physics Tsinghua University Beijing 100084 China Department of Physics Capital Normal University Beijing 100037 China Department of Physics Tsinghua University Beijing 100084 China

The magnetization of coupled ferromagnetic films is calculated by Green's function method. The coupling can either be ferromagnetic or antiferromagnetic. For the latter case, a concept of pseudo-spin is suggested to make calculation possible. A pseudo-spin is actually an anti-spin with its properties being analogue to other known anti particles such as a hole. The decreasing of Curie point as the coupling strength decays is computed. It is noted that with the same strength, antiferromagnetic coupling has higher Curie point than ferromagnetic coupling.

关键词： magnetization, pseudo-spin, coupled ferromagnetic films

Sepsis resulting from Enterobacter aerogenes resistant to carbapenems after liver transplantation

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

Hepatobiliary & Pancreatic Diseases International 2009年第3期8卷 320-322页

作者： Chen, Hao Zhang, Ying Chen, Ya-Gang yu, yun-song Zheng, Shu-Sen Li, Lan-Juan Zhejiang Univ Sch Med Dept Hepatobiliary & Pancreat Surg Affiliated Hosp 1 Hangzhou 310003 Peoples R China Zhejiang Univ Sch Med Key Lab Infect Dis Affiliated Hosp 1Publ Hlth Minist Hangzhou 310003 Peoples R China

BACKGROUND: Sepsis due to Enterobacter aerogenes (E. aerogenes) is rare after liver transplantation but is also a serious infection that may cause liver abscess. The purpose of this case report is to relate an unusual presentation of liver transplantation to show how successive treatment can be an appropriate option in septic patients after liver transplantation. METHOD: We report on a patient with liver transplantation who developed sepsis due to extended spectrum beta-lactamases and AmpC-producing E. aerogenes. RESULTS: A 39-year-old man had a biliary fistula and then was found to have multiple liver abscesses through abdominal ultrasound and an abdominal computed tomography scan, and carbapenem-sensitive E. aerogenes infection was confirmed. The patient was not successfully treated with conservative treatment consisting of intravenous carbapenems, percutaneous transhepatic cholangial drainage, and biliary stent placement by endoscopic retrograde cholangiopancreatography, so a second liver transplantation followed. Carbapenem-resistant E. aerogenes was detected in bile and blood after a five-week course of carbapenem therapy. The patient developed septic shock and multiple organ dysfunction syndrome. CONCLUSIONS: We first report an unusual case of sepsis caused by E. aerogenes after liver transplantation in China. Carbapenem-resistant E. aerogenes finally leads to uncontrolled sepsis with current antibiotics. We hypothesize that the infection developed as a result of biliary fistula and predisposing immunosuppressive agent therapy. Further research is progressing on the aspect of immunomodulation therapy. (Hepatobiliary Pancreat Dis Int 2009; 8: 320-322)

关键词： sepsis Enterobacter aerogenes carbapenem therapy

Method for detector description conversion from DD4hep to Filmbox

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第9期35卷 115-126页

作者： Zhao-Yang yuan Tian-Zi song yu-Jie Zeng Kai-Xuan Huang yu-Mei Zhang Zheng-yun You School of Physics Sun Yat-sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

DD4hep serves as a generic detector description toolkit recommended for offline software development in next-generation high-energy physics(HEP)***,Filmbox(FBX)stands out as a widely used 3D modeling file format within the 3D software *** this paper,we introduce a novel method that can automatically convert complex HEP detector geometries from DD4hep description into 3D models in the FBX *** feasibility of this method was dem-onstrated by its application to the DD4hep description of the Compact Linear Collider detector and several sub-detectors of the super Tau-Charm facility and circular electron-positron collider *** automatic DD4hep–FBX detector conversion interface provides convenience for further development of applications,such as detector design,simulation,visualization,data monitoring,and outreach,in HEP experiments.

关键词： Detector description DD4hep FBX Geometry Offline software

Effect of Closed Suctioning on Reducing the Contamination Released into the Environment

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2017年第14期130卷 1745-1746页

作者： Hui-Jie yu Xiang-yun Zhu song-Ao Xu Wei-Zhong Cao yun-song yu Department of Emergency Intensive Care Unit The First Hospital of Jiaxing Jiaxing Zhejiang 314000 China Department of Infectious Diseases Sir Run Run Shaw Hospital College of Medicine Zhejiang University Hangzhou Zhejiang 310016 China

With the development of critical care medicine,mechanical ventilation is extensively used in the Intensive Care Units （ICUs）.Patients receiving invasive mechanical ventilation require sputum suctioning either regularly or as required to clear secretions from the airway and maintain airway ***,the requirement to disconnect the breathing loop tube for sputum suctioning is determined by the use of open or closed modes *** present,the open suctioning system is most commonly used for clearing airway *** resistance to bacterial strains is rapidly increasing,the possibility of open suctioning in contaminating the ICU environment is often questioned,which was investigated in this study.

关键词： Air Culture Closed Tracheal Suctioning Endotracheal Suctioning Mechanical Ventilation

Development of a scintillating-fiber-based beam monitor for the coherent muon-to-electron transition experiment

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第4期35卷 156-164页

作者： yu Xu yun-song Ning Zhi-Zhen Qin Yao Teng Chang-Qing Feng Jian Tang yu Chen Yoshinori Fukao Satoshi Mihara Kou Oishi School of Physics Sun Yat-sen UniversityGuangzhou 510275China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China High Energy Accelerator Research Organization(KEK) Ibaraki 305‑0801Japan Department of Physics Imperial College LondonLondon SW72AZUK

The coherent muon-to-electron transition(COMET)experiment is a leading experiment for the coherent conversion of μ^(-)N→e^(-)N using a high-intensity pulsed muon beamline,produced using innovative slow-extraction ***,it is critical to measure the muon beam *** set up a muon beam monitor(MBM),where scintillating fibers woven in a cross shape were coupled to silicon photomultipliers to measure the spatial profile and timing structure of the extracted muon beam for the *** MBM detector was tested successfully with a proton beamline at the China Spallation Neutron Source and took data with good performance in the commissioning *** development of the MBM,including its mechanical structure,electronic readout,and beam measurement results,are discussed.

关键词： Beam instrumentation Profile monitor Scintillating fiber Silicon photomultipliers

Chalcone derivatives as novel,potent and selective inhibitors against human Notum:Structure–activity relationships and biological evaluations

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第3期35卷 321-325页

作者： Jin-Hui Shi Bei Zhao Li-Lin song yu-Qing song Meng-Ru Sun Tian Tian Hong-yu Chen yun-Qing song Jian-Ming Sun Guang-Bo Ge Shanghai Frontiers Science Center of TCM Chemical Biology Institute of Interdisciplinary Integrative Medicine Research Shanghai University of Traditional Chinese MedicineShanghai 201203China Dalian Engineering Research Center for Carbohydrate Agricultural Preparations Liaoning Provincial Key Laboratory of CarbohydratesDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine Shanghai 200137China

Human Notum(hNotum)inhibitors could be used for treating Wnt signalling-associated diseases including colorectal ***,two series of chalcone derivatives were designed and synthesized aiming to find selective and potent hNotum ***–activity relationship(SAR)studies showed that 2-methoxyl and 5-bromine substitutions on A-ring significantly enhanced anti-hNotum effect,while 4’-ethoxyl and 3’-alkyl substitutions on B-ring were beneficial for hNotum *** all tested chalcones,B11 displayed the most potent anti-Notum effect(IC_(50)=3.6 nmol/L),good selectivity,excellent chemical stability and suitable metabolic *** investigations showed that B11 acted as a competitive inhibitor of hNotum,while this agent(5μmol/L)significantly weaken the migration abilities of colorectal cancer ***,this study deciphers the SARs of chalcones as hNotum inhibitors and reports a novel and potent hNotum inhibitor with the anti-migration effect on colorectal cancer cells,which offers a promising lead compound to develop novel anti-cancer agents.

关键词： Human notum(hNotum) Chalcone Computer-assisted drug discovery Structure–activity relationship(SAR) Anti-colorectal cancer agent

Trudinger–Moser Inequalities on a Closed Riemann Surface with a Symmetric Conical Metric

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第9期40卷 2263-2284页

作者： yu FANG yun Yan YANG College of Teacher Education Quzhou UniversityQuzhou 324003P.R.China Department of Mathematics Renmin University of ChinaBeijing 100872P.R.China

This is a continuation of our previous work(*** ***.,20,1295–1324,2020).Let(Σ,g)be a closed Riemann surface,where the metric g has conical singularities at finite *** G is a group whose elements are isometries acting on(Σ,g).Trudinger–Moser inequalities involving G are established via the method of blow-up analysis,and the corresponding extremals are also *** extends previous results of Chen(***.,1990),Iula–Manicini(Nonlinear Anal.,2017),and the authors(2020).

关键词： Trudinger-Moser inequality blow-up analysis conical singularity

Trial application of the envelope method to the potential ambiguity problem

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第1期35卷 73-80页

作者： Li-yuan Hu yu-Shou song Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering UniversityHarbin 150001China College of Nuclear Science and Technology Harbin Engineering UniversityHarbin 150001China Key Laboratory of Nuclear Safety and Advanced Nuclear Energy Technology Ministry of Industry and Information TechnologyHarbin 150001China

The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering *** a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and farside scattering *** contrast,the envelope method can decompose the experimental data into two components with negative and positive deflection angles,***,a question arises as to whether the comparison between the calculated nearside(or farside)component and the derived positive-deflection-angle(or negative-deflection-angle)component can help analyze the potential ambiguity *** this study,we conducted a trial application of the envelope method to the potential ambiguity *** envelope method was improved by including uncertainties in the experimental *** colliding systems of 16O+28Si at 215.2 MeV and 12C+12C at 1016 MeV were considered in the *** each colliding system,the angular distribution experimental data were described nearly equally well by two potential sets,one of which is“surface transpar-ent”and the other is *** calculated angular distributions were decomposed into nearside and farside scattering *** the improved envelope method,the experimental data were decomposed into the positive-deflection-angle and negative-deflection-angle components,which were then compared with the calculated nearside and farside *** capability of the envelope method to analyze the potential ambiguities was also discussed.

关键词： Elastic scattering Optical potential ambiguities Envelope method Nearside/farside decomposition

Microstructure and mechanical properties of Co-28Cr-6Mo-0.22C investment castings by current solution treatment

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第4期21卷 369-378页

作者： Ze-yu Dan Jun Liu Jian-lei Zhang Yan-hua Li yuan-xin Deng yun-hu Zhang Chang-jiang song Center for Advanced Solidification Technology School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Wuxi CastPro Precision Co. Ltd.Wuxi 214105JiangsuChina

This study examined the impact of current solution treatment on the microstructure and mechanical properties of the Co-28Cr-6Mo-0.22C alloy investment *** findings reveal that the current solution treatment significantly promotes the dissolution of carbides at a lower *** optimal conditions for solution treatment are determined as a solution temperature of 1,125°C and a holding time of 5.0 *** these parameters,the size and volume fraction of precipitated phases in the investment castings are measured as6.2μm and 1.1vol.%.The yield strength,ultimate tensile strength,and total elongation of the Co-28Cr-6Mo-0.22C investment castings are 535 MPa,760 MPa,and 12.6%,*** values exceed those obtained with the conventional solution treatment at 1,200°C for 4.0 *** findings suggest a phase transformation of M_(23)C_(6)→σ+C following the current solution treatment at 1,125°C for 5.0 *** comparison,the traditional solution treatment at 1,200°C for 4.0 h leads to the formation of M_(23)C_(6)and M_(6)C *** is noteworthy that the non-thermal effect of the current during the solution treatment modifies the free energy of both the matrix and precipitation *** modification lowers the phase transition temperature of the M_(23)C_(6)→σ+C reaction,thereby facilitating the dissolution of *** a result,the current solution treatment approach achieves carbide dissolution at a lower temperature and within a significantly shorter time when compared to the traditional solution treatment methods.

关键词： CoCrMo alloy investment castings current solution treatment microstructure mechanical property carbide