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Identity for the Exponential-Type Molecule Potentials and the Supersymmetry Shape Invariance

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Communications in Theoretical Physics 2001年第12期36卷 641-646页

作者： JIA chun-sheng zhang Ying ZENG Xiang-Lin SUN Liang-Tian State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum Institute. Nanchong 637001 Sichuan Province China Department of Computer Science Sichuan Teacher''s College Nanchong 637002 Sichuan Province China Graduate School Southwest Petroleum Institute Nanchong 637001 Sichuan Province China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum Institute. Nanchong 637001 Sichuan Province China

The identity and the supersymmetry shape invariance for a class of exponential-type molecule potentials are studied by introducing a deformed five-parameter exponential-type potential (DFPEP) and via the multi-parameter deformations. It has been shown that the DFPEP is a shape-invariant potential with a translation of parameters. By making use of the shape invariance approach, the exact energy levels are determined for the bound states with zero angular momentum. A class of molecule potentials and their exact energy spectra for the zero angular momentum states are reduced from the DFPEP and a general energy spectrum formula, respectively. The interrelations for some molecule potentials are also discussed.

关键词： deformed five-parameter exponential-type potential, shape invariance, multi-parameter deforma tion, energy eigenvalue

G328: A Small-Amplitude Red Variable with a Period Near One Day

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Chinese Journal of Astronomy and Astrophysics 2006年第5期6卷 517-520页

作者： Bao-An Yao Chang-Jun Shen chun-sheng zhang Han-Ming Hu Qing Lin Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 National Astronomical Observatories / Yunnan Observatory Chinese Academy of Sciences Kunming650011

G328 = A65 = L3314 （V = 13.83, B - V = 1.91） is a field star in the direction of the globular cluster M4. If we take E（B - V） = 0.40, then its （B - V）0 = 1.51, corresponding to a spectral type of K5Ⅲ if it is a giant star; or of dM2 if it is a dwarf. Observations at both the MSSSO and Yunnan Observatory have shown that G328 is a new variable with peak to peak amplitude ≌ 0.05 mag in V. While it is not unusual for so red a star to be a variable, special attention must be paid to its short period of about one day. If the variability is due to pulsation, the spectral type and luminosity as well as effective temperature should be determined in order to compare it with Xiong＇s theory.

关键词： stars variables - stars individual (G328)

Expression of Obesity Hormone Leptin in Human Colorectal Cancer

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Chinese Journal of Cancer Research 2009年第2期21卷 142-146页

作者： Jin-chun Cong Xian-wei Dai Ming-yang Shen Jun-jiang Wang chun-sheng Chen Hong zhang Lei Qiao Department of Colorectal Surgery Shengjing Hospital China Medical University Shenyang 110004 China

Objective： The obesity hormone, leptin, has been found to participate in the development and proliferation of normal and malignant tissues. The aim of this study was to evaluate the role of leptin in human colorectal cancer. Methods： Serum leptin levels were measured via ABC-ELLSA in 30 colorectal cancers and 24 normal controls. Leptin concentration in colorectal cancer was analyzed in terms of selected clinicopathological features and some oncogenes. Results： The mean concentration of leptin was significantly higher for colorectal cancers（3.54±1.46 ng/ml） than normal controls（2.27±0.99 ng/ml）, no gender difference was observed in this study. Leptin expression in poorly differentiated tumors was obviously lower than those in moderately and well differentiated tumors. There were no statistically significant correlations between leptin and the serum CEA and CA199 in colorectal cancers （P〉0.05）, and between leptin and the expressions of K-RAS, P53, APC, DCC genes in tumor tissues （P〉0.05）. Conclusion： Leptin is overexpressed in human colorectal cancer, which is related to the differentiation degrees of the tumor. There is no correlation between leptin expression and changes of oncogenes in colorectal cancers.

关键词： Colorectal cancer Leptin

Some Results for the Compound Poisson Process That Is Perturbed by Diffusion

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Acta Mathematicae Applicatae Sinica 2002年第1期18卷 153-160页

作者： chun-sheng zhang, Lian-zeng zhang, Rong WUDepartment of Mathematics, Nankai University, Tianjing 300071, China Department of Mathematics Nankai University Tianjing China

In the present paper surplus process perturbed by diffusion are considered. The distributions of the surplus immediately before and at ruin corresponding to the probabilities of ruin caused by oscillation and ruin caused by a claim are studied. Some joint distribution densities are obtained. Techniques from martingale theory and renewal theory are used.

关键词： Compound Poisson process Diffusion Ruin Probability Oscillation Claim Surplus Joint distribution

Comparison on wear resistance of nanostructured bainitic bearing steel with and without residual cementite

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Journal of Iron and Steel Research International 2022年第2期29卷 339-349页

作者： Yu-man Qin Chang-bo Liu chun-sheng zhang Xu-biao Wang Xiao-yan Long Yan-guo Li Zhi-nan Yang Fu-cheng zhang State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao066004HebeiChina National Engineering Research Center for Equipment and Technology of Cold Rolled Strip Yanshan UniversityQinhuangdao066004HebeiChina

The sliding wear property of high-carbon nanostructured bainitic bearing steel with the equal initial hardness and different microstructures was investigated,and the reasons for the difference of wear resistance between the cementite-bearing(CB)and cementite-free(CF)specimens were *** results show that CF specimens have lower mass loss and surface roughness and shallower wear depth than CB specimens during wear *** with CB specimen,CF specimen presents superior wear *** is due to two reasons:(1)a lot of retained austenite in CF specimen is easy to produce TRIP effect and be transformed into martensite during wear process,which notably increased the surface hardness of worn specimen;(2)there is a nondestructive oxide layer in the surface of cementite-free worn specimen,which can protect the surface of worn specimen from *** the combined effect of retained austenite and oxide layer,the loss of matrix is ***,CF specimen exhibits high wear *** reveals that the wear mechanism of high-carbon nanostructured bainitic bearing steel with different microstructures can provide a reference for improving the wear resistance in high-carbon nanostructured bainitic bearing steel in future.

关键词： Cementite Nanostructured bainite Bearing steel Microstructure Wear resistance

Risk Factor Analyses for the Return of Spontaneous Circulation in the Asphyxiation Cardiac Arrest Porcine Model

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Chinese Medical Journal 2015年第8期128卷 1096-1101页

作者： Cai-Jun Wu Zhi-Jun Guo chun-sheng Li Yi zhang Jun Yang Department of Emergency Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China

Background： Animal models of asphyxiation cardiac arrest （ACA） are frequently used in basic research to mirror the clinical course of cardiac arrest （CA）. The rates of the return of spontaneous circulation （ROSC） inACA animal models are lower than those from studies that have utilized ventricular fibrillation （VF） animal models. The purpose of this study was to characterize the factors associated with the ROSC in the ACA porcine model. Methods： Forty-eight healthy miniature pigs underwent endotracheal tube clamping to induce CA. Once induced, CA was maintained untreated for a period of 8 min. Two minutes following the initiation of cardiopulmonary resuscitation （CPR）, defibrillation was attempted until ROSC was achieved or the animal died. To assess the factors associated with ROSC in this CA model, logistic regression analyses were performed to analyze gender, the time of preparation, the amplitude spectrum area （AMSA） from the beginning of CPR and the pH at the beginning of CPR. A receiver-operating characteristic （ROC） curve was used to evaluate the predictive value ofAMSA for ROSC. Results： ROSC was only 52.1% successful in this ACA porcine model. The multivariate logistic regression analyses revealed that ROSC significantly depended on the time of preparation, AMSA at the beginning of CPR and pH at the beginning of CPR. The area under the ROC curve in for AMSA at the beginning of CPR was 0.878 successful in predicting ROSC （95% confidence intervals： 0.773-0.983）, and the optimum cut-offvalue was 15.62 （specificity 95.7% and sensitivity 80.0%）. Conclusions： The time of preparation, AMSA and the pH at the beginning of CPR were associated with ROSC in this ACA porcine model. AMSA also predicted the likelihood of ROSC in this ACA animal model.

关键词： Asphyxia Cardiac Arrest Cardiopulmonary Resuscitation Logistic Regression Analyses Return of Spontaneous Circulation

Nitrate Leaching in an Irrigated Wheat-Maize Rotation Field in the North China Plain

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Pedosphere 2005年第2期15卷 196-203页

作者： zhangYu-Ming HUchun-sheng zhangJia-Bao CHENDe-Li LIXiao-Xin InstituteofGeneticandDevelopmentalBiology ChineseAcademyofSciencesShijiazhuang050021（China） InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China） DepartmentofResourceManagementandHorticulture InstituteofLandandFoodResourcetheUniversityofMelbourneParkville3052Victoria（Australia）

Soil water deep drainage and nitrate (NO-3) leaching losses below the root zone were investigated in a 1 ha wheat-maize rotation field under traditional agricultural management that local farmers generally follow in the North China Plain, using the soil water balance method and NO3-N concentration in suction samples. Water drainage, and NO3-N distribution and leaching losses exhibited pronounced spatial and temporal variability. Soil water deep drainage and NO3-N leaching loss mostly occurred during the sum…

关键词： deep drainage nitrate leaching soil water

Transfer RNA-derived small RNA serves as potential non-invasive diagnostic marker and a novel therapeutic target for acute pancreatitis

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World Journal of Gastroenterology 2025年第1期31卷 152-156页

作者： Jing zhang chun-Lin Ou Department of Immunology School of Basic MedicineCentral South UniversityChangsha 410000Hunan ProvinceChina Department of Pathology Xiangya HospitalCentral South UniversityChangsha 410008Hunan ProvinceChina

Transfer RNA(tRNA)-derived fragments,a new type of tRNA-derived small RNA(tsRNA),can be cleaved from tRNA by enzymes to regulate target gene expression at the transcriptional and translational *** are not only degradation fragments but also have biological functions,including those in immune inflammation,metabolic disorders,and cell *** dysregulation is closely associated with multiple diseases,including various cancers and acute pancreatitis(AP).AP is a common gastrointestinal disease,and its incidence increases *** development is associated with tsRNAs,which regulate cell injury and induce inflammation,especially pyroptosis and ***,serum tRF36 has the potential to serve as a non-invasive diagnostic biomarker and leads to pancreatic acinar cell ferroptosis causing inflammation to promote *** show the characteristics of tsRNAs and their diagnostic value and function in AP,and discuss the potential opportunities and challenges of using tsRNAs in clinical applications and research.

关键词： Transfer RNA derived small RNAs Acute pancreatitis Liquid biopsy Biomarker Cell pyroptosis Ferroptosis

Subretinal fibrosis secondary to neovascular age-related macular degeneration:mechanisms and potential therapeutic targets

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Neural Regeneration Research 2025年第2期20卷 378-393页

作者： Jingxiang zhang Xia sheng Quanju Ding Yujun Wang Jiwei Zhao Jingfa zhang Department of Ophthalmology People’s Hospital of Huangdao DistrictQingdaoShandong ProvinceChina Department of Urology People’s Hospital of Huangdao DistrictQingdaoShandong ProvinceChina Department of Ophthalmology Shanghai General Hospital(Shanghai First People’s Hospital)Shanghai Jiao Tong University School of MedicineShanghaiChina National Clinical Research Center for Eye Diseases Shanghai Key Laboratory of Ocular Fundus DiseasesShanghai Engineering Center for Visual Science and PhotomedicineShanghai Engineering Center for Precise Diagnosis and Treatment of Eye DiseasesShanghaiChina

Subretinal fibrosis is the end-stage sequelae of neovascular age-related macular *** causes local damage to photoreceptors,retinal pigment epithelium,and choroidal vessels,which leads to permanent central vision loss of patients with neovascular age-related macular *** pathogenesis of subretinal fibrosis is complex,and the underlying mechanisms are largely ***,there are no effective treatment options.A thorough understanding of the pathogenesis of subretinal fibrosis and its related mechanisms is important to elucidate its complications and explore potential *** current article reviews several aspects of subretinal fibrosis,including the current understanding on the relationship between neovascular age-related macular degeneration and subretinal fibrosis;multimodal imaging techniques for subretinal fibrosis;animal models for studying subretinal fibrosis;cellular and non-cellular constituents of subretinal fibrosis;pathophysiological mechanisms involved in subretinal fibrosis,such as aging,infiltration of macrophages,different sources of mesenchymal transition to myofibroblast,and activation of complement system and immune cells;and several key molecules and signaling pathways participating in the pathogenesis of subretinal fibrosis,such as vascular endothelial growth factor,connective tissue growth factor,fibroblast growth factor 2,platelet-derived growth factor and platelet-derived growth factor receptor-β,transforming growth factor-βsignaling pathway,Wnt signaling pathway,and the axis of heat shock protein 70-Toll-like receptors 2/*** review will improve the understanding of the pathogenesis of subretinal fibrosis,allow the discovery of molecular targets,and explore potential treatments for the management of subretinal fibrosis.

关键词： choroidal neovascularization epithelial-mesenchymal transition mesenchymal transition myofibroblast neovascular age-related macular degeneration submacular fibrosis subretinal fibrosis therapeutic targets transforming growth factor-β vascular endothelial growth factor