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Clinical observation of laparoscopic cholecystectomy combined with endoscopic retrograde cholangiopancreatography or common bile duct lithotripsy

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World Journal of Clinical Cases 2022年第30期10卷 10931-10938页

作者： Hong Niu Fei Liu yi-bo tian Department of Gastroenterology Jincheng General HospitalJincheng 048000Shanxi ProvinceChina Department of General Surgery Jincheng General HospitalJincheng 048000Shanxi ProvinceChina Department of Emergency Jincheng General HospitalJincheng 048000Shanxi ProvinceChina

BACKGROUND The incidence of common bile duct(CBD) stones accounts for approximately 10%–15% of all CBD *** 8%–20% of these patients also have gallstones with heterogenous signs and *** To investigate the clinical effects of laparoscopic cholecystectomy(LC) combined with endoscopic retrograde cholangiopancreatography(ERCP) and LC with CBD excision and stone extraction in one-stage suture(LBEPS) for the treatment of gallbladder and CBD *** Ninety-four patients with gallbladder and CBD stones were selected from our hospital from January 2018 to June *** were randomly divided into study and control groups with 47 patients *** study group underwent LC with ERCP,and the control group underwent LC with ***,recovery time of gastrointestinal function,complication rates,liver function indexes,and stress response indexes were measured pre-and postoperatively in both the *** The durations of treatment and hospital stay were shorter in the study group than in the control *** was no significant difference between the one-time stone removal rate between the study and control *** time to anal evacuation,resumption of oral feeding,time to bowel sound recovery,and time to defecation were shorter in the study group than in the control *** preoperative serum direct bilirubin(DBIL),total bilirubin(TBIL),and alanine aminotransferase(ALT) levels were insignificantly higher in the study group than that in the control group.A day after surgery,the postoperative serum DBIL,TBIL,and ALT levels were lower than their preoperative levels in both groups,and of the two groups,the levels were lower in the study *** the preoperative serum adrenocorticotrophic(ACTH),cortisol(COR),epinephrine(A),and norepinephrine(NE) levels were higher in the study group than that in the control group,these differences were not significant(P > 0.05).The serum ACTH,COR,A,and NE levels in both groups decreased one day

关键词： Laparoscopic cholecystectomy Endoscopic retrograde cholangiopancreatography Choledochotomy with one-stage suture Gallbladder stones Common bile duct stones

Coordinated Control Strategy of New Energy Power Generation System with Hybrid Energy Storage Unit

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Energy Engineering 2025年第1期122卷 167-184页

作者： Yun Zhang ZifenHan Biao tian Ning Chen yi Fan School of Mechano-Electronic Engineering Xidian UniversityXi’an710071China Electric Power Control Center State Grid Gansu Electric Power CompanyLanzhou730030China Electric Power Control Center State Grid Gansu Electric Power Company Zhangye Power Supply BranchZhangye734000China

The new energy power generation is becoming increasingly important in the power *** as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,photovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting the stability of the power *** solve this problem,this paper proposes a coordinated control strategy for a newenergy power generation system with a hybrid energy storage unit based on the lithium iron phosphate-supercapacitor hybrid energy storage ***,the variational mode decomposition algorithm is used to separate the high and low frequencies of the power signal,which is conducive to the rapid and accurate suppression of the power fluctuation of the energy storage ***,the fuzzy control algorithm is introduced to balance the power between energy *** this paper,the actual data is used for simulation,and the simulation results show that the strategy realizes the effective suppression of the bus voltage fluctuation and the accurate control of the internal state of the energy storage unit,effectively avoiding problems such as overshoot and over-discharge,and can significantly improve the stability of the photovoltaic power generation systemand the stability of the Direct Current *** is of great significance to promote the development of collaborative control technology for photovoltaic hybrid energy storage units.

关键词： Photovoltaic power suppression hybrid energy storage unit variationalmodal decomposition fuzzy control power distribution control

Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

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Science China Chemistry 2025年

作者： Yuan tian Jiang-bo Chen Jie ying Ge tian Yu-Xuan Xiao yi Lu Si-Ming Wu Wei Geng Ling Shen Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

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A variable-coefficient unstable nonlinear Schrdinger model for the electron beam plasmas and Rayleigh-Taylor instability in non-uniform plasmas: Solutions and observable effects

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A variable-coefficient unstable nonlinear Schrdinger model...

2003’全国流体力学青年研讨会

作者： yi-tian Gao and bo tian School of Aeronautic Science and Technology,Beijing University of Aeronautics and Astronautics,Beijing 100083,China School of Science,Beijing University of Posts and Telecommunications,Beijing 100876,China

＜正＞ A variable-coefficient unstable nonlinear Schrodinger model is hereby investigated, which arises in such applications as the electron-beam plasma waves and Rayleigh-Taylor instability in non-uniform, plasmas. With computerized symbolic computation, families of exact analytic dark- and bright-soliton-like solutions are found, along with similarity solutions. Some observable effects caused by the variable coefficient are predicted, which may be detected in the future with the relevant space or laboratory plasma experiments with non-uniform background existing. The full text of this paper will appear in Phys. Plasmas, Vol. 10, Iss. 11, Nov., 2003.

关键词： Variable-coefficient unstable nonlinear Schrodinger model Electron beam plasmas Rayleigh-Taylor instability Non-uniform plasmas Analytic soliton-like solutions Similarity solutions Observable effects

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微生物反应器处理含镍废水的研究

化学工程 2017年第3期45卷 1-5页

作者：庞秀芬段若依梁民博田萍西安理工大学应用化学系陕西西安710054 天津大学环境学院天津300350

从受污环境中分离筛选出对Ni^(2+)有去除活性的产朊假丝酵母菌y188。采用响应曲面法对游离细胞去除废水中Ni^(2+)的条件进行优化。在35℃,pH=7.0,130 r/min振荡培养25 min的条件下,y188细胞对模拟废水中Ni^(2+)的去除率达到98.49%。以y... 详细信息

从受污环境中分离筛选出对Ni^(2+)有去除活性的产朊假丝酵母菌y188。采用响应曲面法对游离细胞去除废水中Ni^(2+)的条件进行优化。在35℃,pH=7.0,130 r/min振荡培养25 min的条件下,y188细胞对模拟废水中Ni^(2+)的去除率达到98.49%。以y188为菌种、废弃煤渣颗粒为载体组建固定化细胞生物反应器。该反应器在15—45℃,pH=2—8的条件下均保持良好的除Ni^(2+)活性,对Ni^(2+)质量浓度为10 mg/L的模拟废水可连续处理8批,Ni^(2+)的去除率保持在91%以上,对Ni^(2+)质量浓度为13.74 mg/L的实际废水连续处理6批,Ni^(2+)的去除率保持在93%以上。出水Ni^(2+)质量浓度均<1.0 mg/L,达到国家电镀污染物排放标准。显微观察结合解吸实验表明,y188细胞在30 min内对废水中Ni^(2+)的去除主要是吸附除Ni^(2+)。

关键词：产朊假丝酵母菌废弃煤渣固定化细胞微生物反应器

Synthesis of chiral phosphine derivatives through a copper（I）-catalyzed desymmetric SNAr reaction

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Science China Chemistry 2025年

作者： Shuai Zhang Pei-Zhi Liu Yan-bo Li Qi Zhang Jun-Zhao Xiao yi-Fan Wang tian-Yu Wei Jia-Wei Jiang Ye Wang Qian Peng Liang yin Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences State Key Laboratory of Elemento-Organic Chemistry and tianjin Key Laboratory of Biosensing and Molecular Recognition College of Chemistry Frontiers Science Center for New Organic Matter Nankai University Haihe Laboratory of Sustainable Chemical Transformations

Axially chiral phosphines are a class of extremely important ligands in asymmetric catalysis. Herein, an unprecedented copper（I）-catalyzed asymmetric SNAr reaction with HP（S）R2is uncovered, which delivers a series of axially chiral phosphine derivatives in high yields with excellent enantioselectivity. Furthermore, the diastereoselective reaction with the kinetic resolution of racemic HP（S）ArR proceeds smoothly, providing the products with moderate diastereoselectivity and excellent enantioselectivity. Control experiments indicate that HP（S）Ph2is much more active than HPPh2and HP（O）Ph2as the pronucleophile in the present reaction. It is found that the SNAr reaction （the first SNAr） proceeds in a desymmetric manner, providing the desired chiral products while a continued SNAr reaction （the second SNAr） slightly occurs in a kinetic resolution manner in the present catalytic system, which enhances the ee of the desired chiral products. DFTcalculations support a concerted reaction pathway rather than a step-wise mechanism. Finally, axially chiral olefin-phosphines produced by the present method work as suitable ligands in Pdcatalyzed asymmetric allylic substitution with C-, N-, and O-nucleophiles and Rh-catalyzed asymmetric addition of arylboronic acid to benzil.

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Comparative analysis of empirical and deep learning models for ionospheric sporadic E layer prediction

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Earth and Planetary Physics 2025年第1期9卷 10-19页

作者： BingKun Yu PengHao tian XiangHui Xue Christopher JScott HaiLun Ye JianFei Wu Wen yi TingDi Chen XianKang Dou Institute of Deep Space Sciences Deep Space Exploration LaboratoryHefei 230088China CAS Key Laboratory of Geospace Environment School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China Department of Meteorology University of ReadingReading RG66BBUK

Sporadic E(Es)layers in the ionosphere are characterized by intense plasma irregularities in the E region at altitudes of 90-130 *** they can significantly influence radio communications and navigation systems,accurate forecasting of Es layers is crucial for ensuring the precision and dependability of navigation satellite *** this study,we present Es predictions made by an empirical model and by a deep learning model,and analyze their differences comprehensively by comparing the model predictions to satellite RO measurements and ground-based ionosonde *** deep learning model exhibited significantly better performance,as indicated by its high coefficient of correlation(r=0.87)with RO observations and predictions,than did the empirical model(r=0.53).This study highlights the importance of integrating artificial intelligence technology into ionosphere modelling generally,and into predicting Es layer occurrences and characteristics,in particular.

关键词： ionospheric sporadic E layer radio occultation ionosondes numerical model deep learning model artificial intelligence

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中华文化生命体的特征探析

新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 122-127页

作者：秘天一新疆大学马克思主义学院新疆乌鲁木齐830046

中华文化生命体呈现对环境刺激的反应、生长发育、新陈代谢、自我调节和超脱自然选择等特征,具有整体性、连贯性、创新性、开放性与和平性特质。整体性和连贯性确保中华文化在数千年发展中的赓承延续与稳定,通过“天人合一”“和而不同... 详细信息

中华文化生命体呈现对环境刺激的反应、生长发育、新陈代谢、自我调节和超脱自然选择等特征,具有整体性、连贯性、创新性、开放性与和平性特质。整体性和连贯性确保中华文化在数千年发展中的赓承延续与稳定,通过“天人合一”“和而不同”实现内在和谐统一;创新性使中华文化在历史长河中保持强大的生长力,推动中华优秀传统文化现代转型,实现马克思主义中国化的新飞跃;开放性增强了中华文化的适应性和生命力,通过吸收和融合外来优秀文化元素,使中华文化在全球化进程中保持独特性和竞争力,并以开放姿态积极借鉴吸收人类文明一切优秀成果,推动文化守正创新;和平性源于对和谐、和合文化的深刻理解,强调和谐共生、和合共在、和平发展,通过对话与合作解决争端。中华文化生命体在全球化背景下展现出独特的现代价值和全球视野,彰显了中华文化的强大生命力和国际影响力。

关键词：习近平文化思想中华文化生命体两个结合文化新使命中华优秀传统文化

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用连锁法求赤纬改正及与其他两法的比较

天文学报 1964年第1期 1-10页

作者：邹仪新李勃田北京天文台筹备处天津国际纬度站

1.本文根据1955—1960年六年期间苏、美、日、意的五个国际纬度站78021个纬度观测值所综合的993个组均值,用连锁法推算现用各星组的赤纬改正量.然后加入津站1959—1961年的观测,用六站86211个纬度观测所综合的1101个组均值,重新再推算一... 详细信息

1.本文根据1955—1960年六年期间苏、美、日、意的五个国际纬度站78021个纬度观测值所综合的993个组均值,用连锁法推算现用各星组的赤纬改正量.然后加入津站1959—1961年的观测,用六站86211个纬度观测所综合的1101个组均值,重新再推算一次.各种结果见表7.同组各值几乎完全一致,最大仅相差0″.002.2.将用连锁法得值Δδ31)和用解方程法得值Δδ42)及用子午环所测的Δδ13)进行比较,得表5和图2、3、4.知每星组赤纬改正量因方法不同而大异.次法得值总较首法为大,几为一常数,平均+0″.128;后法得值夏大,平均较首法大0″.285,较次法大0″.156.这些差异,将对各站的平纬带来同样巨大的影响,应予以应有的注意.3.考究组间差在“晚—子夜”和“子夜—晨”情况下的差值,有如表2B 及图1的末图所示的“夜中差”,在连锁法的结果中并无赤纬改正量的年间差表现（结果见表3B）.

关键词：改正量赤纬各星子夜子午环所得天文学报