检索结果-南通市图书馆

Asian Journal of Andrology 2024年第1期26卷 112-118页

作者： Jin Li Xian-Yan-Ling Yi ze-Yu chen Bo chen Yin Huang Da-Zhou Liao Pu-ze Wang De-Hong Cao Jian-Zhong Ai liang-Ren Liu West China School of Medicine Sichuan UniversityChengdu 610041China Department of Urology Institute of UrologyWest China HospitalSichuan UniversityChengdu 610041China

We investigated the impact and predictive value of bladder function in patients with benign prostatic hyperplasia(BPH)on the efficacy of transurethral prostatectomy.Symptomatic,imaging,and urodynamic data of patients who underwent transurethral prostatectomy at West China Hospital of Sichuan University(chengdu,China)from July 2019 to December 2021 were collected.Follow-up data included the quality of life(QoL),International Prostate Symptom Score(IPSS),and IPSS storage and voiding(IPSS-s and IPSS-v).Moreover,urinary creatinine(Cr),nerve growth factor(NGF),brain-derived neurotrophic factor(BDNF),and prostaglandin estradiol(PGE2)were measured in 30 patients with BPH and 30 healthy participants.Perioperative indicators were determined by subgroup analyses and receiver operating characteristic(ROC)curve analysis.Among the 313 patients with BPH included,patients with severe micturition problems had more improvements but higher micturition grades postoperatively than those with moderate symptoms.Similarly,good bladder sensation,compliance,and detrusor contractility(Dc)were predictors of low postoperative IPSS and QoL.The urinary concentrations of BDNF/Cr,NGF/Cr,and PGE2/Cr in patients were significantly higher than those in healthy participants(all P

关键词： BPH function of bladder IPSS:urodynamics

Percutaneous transhepatic stenting for acute superior mesenteric vein stenosis after pancreaticoduodenectomy with portal vein reconstruction:A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第4期16卷 1195-1202页

作者： chen Lin Zi-Yan Wang liang-Bo Dong Zhi-Wei Wang ze-Hui Li Wei-Bin Wang Department of General Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Department of General Surgery Peking Union Medical College HospitalBeijing 100730China Interventional Section Department of RadiologyPeking Union Medical College HospitalChinese Academy of Medical Science and Peking Union Medical CollegeBeijing 100730China

BACKGROUND Percutaneous transhepatic stent placement has become a common strategy for the postoperative treatment of portal vein(PV)/superior mesenteric veins(SMV)stenosis/occlusion.It has been widely used after liver transplantation surgery;however,reports on stent placement for acute PV/SMV stenosis after pancreatic surgery within postoperative 3 d are rare.CASE SUMMARY Herein,we reported a case of intestinal edema and SMV stenosis 2 d after pancreatic surgery.The patient was successfully treated using stent grafts.Although the stenosis resolved after stent placement,complications,including bleeding,pancreatic fistula,bile leakage,and infection,made the treatment highly challenging.The use of anticoagulants was adjusted multiple times to prevent venous thromboembolism and the risk of bleeding.After careful treatment,the patient stabilized,and stent placement effectively managed postoperative PV/SMV stenosis.CONCLUSION Stent placement is effective and feasible for treating acute PV/SMV stenosis after pancreatic surgery even within postoperative 3 d.

关键词： Pancreaticoduodenectomy Portal vein reconstruction Portal vein stenosis Portal vein stent Case report

Risk stratification in gastric cancer lung metastasis: Utilizing an overall survival nomogram and comparing it with previous staging

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第2期16卷 357-381页

作者： Zhi-Ren chen Mei-Fang Yang Zhi-Yuan Xie Pei-An Wang liang Zhang ze-Hua Huang Yao Luo Department of Science and Education Xuzhou Medical UniversityXuzhou Clinical CollegeXuzhou 221000Jiangsu ProvinceChina Department of Neurology Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina Department of Neurology Clinical LaboratoryGastrointestinal SurgeryCentral Hospital of XuzhouCentral Hospital of XuzhouXuzhou 221000Jiangsu ProvinceChina Department of Public Health Xuzhou Central HospitalXuzhou 221000Jiangsu ProvinceChina Department of Gastroenterology Xuzhou Centre HospitalXuzhou 221000Jiangsu ProvinceChina Department of Public Health Xuzhou Medical UniversityXuzhou 221000Jiangsu ProvinceChina

BACKGROUND Gastric cancer(GC)is prevalent and aggressive,especially when patients have distant lung metastases,which often places patients into advanced stages.By identifying prognostic variables for lung metastasis in GC patients,it may be po-ssible to construct a good prediction model for both overall survival(OS)and the cumulative incidence prediction(CIP)plot of the tumour.AIM To investigate the predictors of GC with lung metastasis(GCLM)to produce nomograms for OS and generate CIP by using cancer-specific survival(CSS)data.METHODS Data from January 2000 to December 2020 involving 1652 patients with GCLM were obtained from the Surveillance,epidemiology,and end results program database.The major observational endpoint was OS;hence,patients were se-parated into training and validation groups.Correlation analysis determined va-rious connections.Univariate and multivariate Cox analyses validated the independent predictive factors.Nomogram distinction and calibration were performed with the time-dependent area under the curve(AUC)and calibration curves.To evaluate the accuracy and clinical usefulness of the nomograms,decision curve analysis(DCA)was performed.The clinical utility of the novel prognostic model was compared to that of the 7th edition of the American Joint Committee on Cancer(AJCC)staging system by utilizing Net Reclassification Improvement(NRI)and Integrated Discrimination Improvement(IDI).Finally,the OS prognostic model and Cox-AJCC risk stratification model modified for the AJCC system were compared.RESULTS For the purpose of creating the OS nomogram,a CIP plot based on CSS was generated.Cox multivariate regression analysis identified eleven significant prognostic factors(P0),time-de-pendent ROC curve(training/validation set AUC>0.7),and calibration curve(rel

关键词： Gastric cancer Lung metastasis Nomograms Surveillance Epidemiology Surveillance epidemiology and end results program database Overall survival Prognosis

Light-induced stepped thermal relaxation in a Hofmann-type metal-organic framework

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第6期67卷 1983-1989页

作者： Wen Cui Wei-Wei Wu ze-Yu Ruan Yan-Cong chen Guang-Jun zeng Guan-Xi chen Si-Guo Wu Zhao-Ping Ni Ming-liang Tong Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of ChemistryInstitute of Green Chemistry and Molecular EngineeringGuangdong Basic Research Center of Excellence for Functional Molecular EngineeringSun Yat-sen UniversityGuangzhou510275China

Spin-crossover(SCO)materials with light-induced multistability have potential applications in multi-addressable opto-magnetic memory devices and multiple switches.Here,we reported a three-dimensional Hofmann-type metal-organic framework(MOF)[Fe(bpy){Pt(CN)_(4)}]·coumarin(1·coumarin,bpy=4,4′-bipyridine),which exhibits an incomplete and hysteretic SCO behavior.Most importantly,the light-induced stepped thermal relaxation(LISTR)with obvious magnetic plateau for a hidden intermediate spin state is firstly realized.This hidden spin state is also observed for the first time in the thermal relaxation after light-assisted spin state annealing(LASSA).Meanwhile,an extremely rare bi-directional light-induced excited spin-state trapping(LIESST)with the highest reverse-LIESST temperature is observed.Therefore,five spin states can be captured in 1·coumarin and the tristability can be modulated below 102 K through the excitation-relaxation mechanism.Hence,the light-and temperatureinduced multistability provides a new strategy for developing multistable materials.

关键词： light magnetic multistability iron metal-organic framework spin-crossover

维普期刊数据库

AFM probe for measuring~10^(−5)ultra-low friction coefficient:Design and application

在线全文

学校读者我要写书评

暂无评论

Friction 2024年第1期12卷 64-73页

作者： Yushan chen liang JIANG Linmao QIAN Tribology Research Institute State Key Laboratory of Traction PowerSouthwest Jiaotong UniversityChengdu 610031China

Superlubricity provides a novel approach to addressing friction and wear issues in mechanical systems.However,little is known regarding improving the atomic force microscope(AFM)friction coefficient measurement resolution.Accordingly,this study established the theoretical formula for the AFM friction coefficient measurement and deduced the measurement resolution.Then,the formula was applied to the AFM probe with a rectangular cross-section cantilever.The measurement resolution is associated with the dimensional properties of the AFM probe,the mechanical properties of the cantilever material,the properties of the position-sensitive detector(PSD),and probably the anti-vibration performance of the AFM.It is feasible to make the cantilever as short as possible and the tip as high as possible to improve the measurement resolution.An AFM probe for measuring an ultra-low friction coefficient was designed and fabricated.The cantilever’s length,width,and thickness are 50,35,and 0.6μm,respectively.The tip height is 23μm.The measurement resolution can reach 7.1×10^(−6) under the maximum normal force.Moreover,the AFM probe was applied to measure the superlubricity between graphene layers.The friction coefficient is 0.00139 under 853.08 nN.This work provides a promising method for measuring a~10^(−5) friction coefficient of superlubricity.

关键词： atomic force microscope(AFM) superlubricity friction coefficientμ probe

Big Theta Equals Small Theta Generically

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第3期40卷 717-730页

作者： Rui chen Jia liang ZOU Institute for Advanced Study in Mathmatics Zhejiang UniversityHangzhou 310058P.R.China Department of Mathematics University of Michigan530 Church StAnn ArborMI 48109USA

In this paper we consider the theta correspondence over a non-Archimedean local field.Using the homological method and the theory of derivatives,we show that under a mild condition the bigtheta lift is irreducible.

关键词： Theta correspondence derivatives

维普期刊数据库

Rapid Unconscious Acquisition of Conditioned Fear with Low-Spatial-Frequency but Emotionally Neutral Stimuli

在线全文

学校读者我要写书评

暂无评论

Research 2024年第1期2023卷 753-762页

作者： Yujie chen Si chen Zhongju Sun Xilei Zhang Xiangyong Yuan liang Wang Yi Jiang State Key Laboratory of Brain and Cognitive Sciences CAS Center for Excellence in Brain Science and Intelligence TechnologyInstitute of PsychologyChinese Academy of SciencesBeijing 100101China Department of Psychology University of Chinese Academy of SciencesBeijing 100049China Chinese Institute for Brain Research Beijing 102206China CAS Key Laboratory of Mental Health Institute of PsychologyChinese Academy of SciencesBeijing 100101China

It has long been proposed that emotionally“prepared”(i.e.,fear-related)stimuli are privileged in the unconscious acquisition of conditioned fear.However,as fear processing is suggested to highly depend on the coarse,low-spatial-frequency(LSF)components of the fear-related stimuli,it is plausible that LSF may play a unique role in the unconscious fear conditioning even with emotionally neutral stimuli.Here,we provided empirical evidence that,following classical fear conditioning,an invisible,emotionally neutral conditioned stimulus(CS+)with LSF,but not with high spatial frequency(HSF),can rapidly elicit stronger skin conductance responses(SCRs)and larger pupil diameters than its CS−counterpart.In comparison,consciously perceived emotionally neutral CS+with LSF and HSF elicited comparable SCRs.Taken together,these results support that the unconscious fear conditioning does not necessarily entail emotionally prepared stimuli but prioritizes LSF information processing and highlight the crucial distinctions between the unconscious and the conscious fear learning.These findings not only coincide with the postulation that a rapid,spatial-frequency-dependent subcortical route is engaged in unconscious fear processing but also suggest the existence of multiple routes for conscious fear processing.

关键词： neutral necessarily diameters

Ischemic colitis induced by a platelet-raising capsule: A case report

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第3期12卷 607-615页

作者： chen-Lu Wang ze-Kun Si Guo-Hong Liu chen chen Hui Zhao Lei Li The Affiliated Hospital of Shandong Second Medical University School of Clinical MedicineShandong Second Medical UniversityWeifang 261000Shandong ProvinceChina Department of Gastroenterology The Affiliated Hospital of Shandong Second Medical UniversityWeifang 261000Shandong ProvinceChina

BACKGROUND Ischemic colitis(IC)is also known as colon ischemia and is caused by colon vascular occlusion or nonocclusion,which results in a reduced blood supply to the colon and is not significant enough to maintain the metabolic function of cells,leading to intestinal wall ischemia.Its main symptoms include abdominal pain,diarrhea,and bloody stool.In severe cases,intestinal gangrene,peritonitis,intestinal stenosis and even intestinal obstruction may occur.IC induced by long-term use of certain special drugs is relatively rare in clinical practice.This article describes the clinical diagnosis and treatment of a typical case and provides a new treatment idea for the treatment of IC.CASE SUMMARY The patient was admitted to the hospital with"abdominal pain for half a month and bloody stool with mucous and pus for 3 d"and was diagnosed with"IC".Symptomatic and supportive treatment,such as antibiotics(levofloxacin),acid inhibition and stomach protection,fluid replenishment,and intravenous nutrition,was given.The patient's colonic ulcers were considered to be related to the oral administration of platelet(PLT)-raising capsules;the patient was asked to stop PLT-raising drugs for selective review via colonoscopy,and antibiotics and mesalazine enteric-coated tablets were stopped.Under the guidance of hematology consultation,60 mg of methylprednisolone was given in combination with PLT infusion to increase the PLT.After treatment,the patient's condition stabilized,the patient’s stool turned yellow,the patient’s symptoms improved,and the patient was allowed to leave the hospital.CONCLUSION PLT-raising capsules can lead to IC,so clinicians should have a full understanding of the application of these drugs in the treatment of various causes of thrombocyt-INTRODUCTION Ischemic colitis(IC)is also known as colon ischemia(CI)and is caused by colon vascular occlusion or nonocclusion,which results in a reduced blood supply to the colon;this process is not significant enough to maintain the metabolic function of cells,leading to int

关键词： Platelet-raising capsule Ischemic colitis Drug-related Colonic ulcer Case report

Micro defects formation and dynamic response analysis of steel plate of quasi-cracking area subjected to explosive load

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第1期31卷 580-593页

作者： Zheng-qing Zhou ze-chen Du Xiao Wang Hui-ling Jiang Qiang Zhou Yu-long Zhang Yu-zhe Liu Pei-ze Zhang Research Institute of Macro-Safety Science University of Science and TechnologyBeijing100083China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing100083China School of Mechanical Engineering Nantong UniversityNantong226019China China North Industry Advanced Technology Generalization Institute Beijing100089China China Academy of Ordnance Science China

As the protective component,steel plate had attracted extensive attention because of frequently threats of explosive loads.In this paper,the evolution of microstructure and the mechanism of damage in the quasi-cracking area of steel plate subjected to explosive load were discussed and the relationships between micro defects and dynamic mechanical response were revealed.After the explosion experiment,five observation points were selected equidistant from the quasi-cracking area of the section of the steel plate along the thickness direction,and the characteristics of micro defects at the observation points were analyzed by optical microscope(OM),scanning electron microscope(SEM) and electron backscattered diffraction(EBSD).The observation result shows that many slip bands(SBs) appeared,and the grain orientation changed obviously in the steel plate,the two were the main damage types of micro defects.In addition,cracks,peeling pits,grooves and other lager micro defects were appeared in the lower area of the plate.The stress parameters of the observation points were obtained through an effective numerical model.The mechanism of damage generation and crack propagation in the quasicracking area were clarified by comparing the specific impulse of each observation point with the corresponding micro defects.The result shows that the generation and expansion of micro defects are related to the stress area(i.***.the upper compression area,the neutral plane area,and the lower tension area).The micro defects gather and expand at the grain boundary,and will become macroscopic damage under the continuous action of tensile stress.Besides,the micro defects at the midpoint of the section of the steel plate in the direction away from the explosion center(i.***.the horizontal direction) were also studied.It was found that the specific impulse at these positions were much smaller than that in the thickness direction,the micro defects were only SBs and a few micro cracks,and the those decreased with the increase of the distance from the e

关键词： Explosive load Quasi-cracking area Micro defects Steel plate Dynamic response Numerical simulation

维普期刊数据库

Ultrathin surface coating of Cu enabling long-life Zn metal anodes

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2125-2135页

作者： Sang-Sang Liu Ya-Ru liang Wen-Long chen ze-Hua Wang Yi-Long Dai Fu-Gang Qi zeng-Sheng Ma Xiao-Ping Ouyang School of Materials Science and Engineering Xiangtan University Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education Xiangtan University

Aqueous zinc-ion batteries （AZIBs） are regarded as promising energy storage devices due to their low cost,high capacity,and ecological safety.Nevertheless,the severe dendritic growth and side reactions hinder their practical applicability significantly.Herein,an ultrathin Cu coating layer （～200 nm） is decorated on zinc foils via filtered cathodic vacuum arc deposition technology,aiming to achieve high-performance AZIBs.The Cu layer effectively suppresses chemical corrosion and hydrogen evolution reactions and enables preferential （002） Zn deposition during the stripping/plating cycles.Consequently,the Cu@Zn anode represents an elongated cycle life over 4,000 h at 2 mA·cm-2/2 mAh·cm-2.Even in conditions of high current density of 5 and 10 mA·cm-2,the Cu@Zn anode shows prolonged cycling stability exceeding 4000 and 2000 h,respectively.Such advantages also bring high Coulombic efficiency of 99.87% under 5 mAh·cm-2in Cu@Ti||Zn half-cell over 1500 cycles.Moreover,the Cu@Zn||MnO2full cell demonstrates a superior cyclability with a specific capacity of 203 mAh·g-1after 500 cycles a1 A·g-1.

关键词： Zn ion battery Zn metal anode Zn (002) plane Cu coating