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Chinese Chemical Letters 2025年第2期36卷 389-393页

作者： Huashan Huang Jingze chen Luyun Zhang hong Yan Siqi Li Fen-Er chen Institute of Pharmaceutical Science and Technology College of Chemistry Fuzhou University Key Laboratory of Natural Medicines of the Changbai Mountain Ministry of Education Molecular Medicine Research Center College of Pharmacy Yanbian University Engineering Center of Catalysis and Synthesis for Chiral Molecules Department of Chemistry Fudan University Shanghai Engineering Center of Industrial Catalysis for Chiral Drugs

A visible light-promoted fast photochemical Wolff rearrangement was developed toward synthesis of α-substituted amides in continuous flow with the use of a photochemical oscillatory flow reactor(POFR).The control experiment indicates that a fast process of the Wolff rearrangement(<40 s) is involved. Notably, this protocol does not require excess use of any reactants, and the resulting α-substituted amides could be isolated by recrystallization in good to excellent yields.

关键词： Flow photochemistry Ketene Oscillatory flow reactor Wolff rearrangement α-Substituted amides

构造抬升对高、低煤阶煤层气藏储集层物性的影响

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石油勘探与开发 2007年第4期34卷 461-464页

作者：陈振宏贾承造宋岩王红岩中国科学院广州地球化学研究所中国石油勘探开发研究院中国石油勘探开发研究院廊坊分院

构造抬升对高、低煤阶煤层气藏储集层物性的影响具有显著差异。低煤阶煤层主要为基质型孔隙,高煤阶煤层主要为裂隙型孔隙。煤岩储集层原地受力分析表明,构造抬升使得基质承受的压力降低。构造抬升模拟实验及煤基质、裂隙渗透率应力敏感... 详细信息

构造抬升对高、低煤阶煤层气藏储集层物性的影响具有显著差异。低煤阶煤层主要为基质型孔隙,高煤阶煤层主要为裂隙型孔隙。煤岩储集层原地受力分析表明,构造抬升使得基质承受的压力降低。构造抬升模拟实验及煤基质、裂隙渗透率应力敏感性实验表明,构造抬升后煤层压力传导加速,割理开启,渗透率变大;基质渗透率比裂隙渗透率的应力敏感性弱。分析认为:构造抬升对高煤阶煤储集层物性影响明显,地层压力降低,割理、裂缝开启,裂隙渗透率显著增强;高煤阶煤层强烈抬升会使其渗透率增大,造成气体大量散失,对煤层气聚集不利;低煤阶煤层储集层物性受构造抬升影响较弱,由于构造抬升,压力降低,煤层气运移速率增大,对煤层气开采有利。

关键词：煤层气高煤阶低煤阶构造抬升储集层物性渗透率

2006-2008年临床分离鲍氏不动杆菌的耐药性变迁

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中华医院感染学杂志 2011年第6期21卷 1234-1236页

作者：吴世红陈振宏运城市中心医院感染性疾病科山西运城044000

目的了解医院鲍氏不动杆菌近3年的耐药状况及分布,为临床用药及控制医院感染提供依据。方法收集医院2006年1月-2008年12月临床分离的非重复的鲍氏不动杆菌372株,采用纸片扩散法测定菌株对抗菌药物的敏感性,数据用WHONET5.4及SPSS11.5软... 详细信息

目的了解医院鲍氏不动杆菌近3年的耐药状况及分布,为临床用药及控制医院感染提供依据。方法收集医院2006年1月-2008年12月临床分离的非重复的鲍氏不动杆菌372株,采用纸片扩散法测定菌株对抗菌药物的敏感性,数据用WHONET5.4及SPSS11.5软件进行统计分析。结果鲍氏不动杆菌感染以下呼吸道感染为主,占87.4%;不同科室分离株的耐药率不同,以ICU分离株耐药率最高,占40.5%;鲍氏不动杆菌对头孢哌酮/舒巴坦的耐药率最低,为6.5%。结论 ICU分离的鲍氏不动杆菌耐药性较非ICU严重;鲍氏不动杆菌对碳青霉烯类抗菌药物耐药率明显上升,加强细菌耐药监测对抗菌药物的临床应用和控制细菌耐药性传播具有重要意义。

关键词：鲍氏不动杆菌耐药性监测碳青霉烯类

细胞壁缺陷结核分枝杆菌对动物及细胞致病作用的研究

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中国人兽共患病杂志 2005年第5期21卷 403-406页

作者：陈峥宏王和贵阳医院微生物学教研室贵阳550004

目的了解细胞壁缺陷结核分枝杆菌对动物及细胞的致病作用,初步探讨细胞壁缺陷结核分枝杆菌的致病机制。方法将结核分枝杆菌稳定L型(TBL)接种Vero细胞和PPD试验阴性的豚鼠腹股沟皮下,观察细胞病变和动物的发病情况、PPD反应、组织病理学... 详细信息

目的了解细胞壁缺陷结核分枝杆菌对动物及细胞的致病作用,初步探讨细胞壁缺陷结核分枝杆菌的致病机制。方法将结核分枝杆菌稳定L型(TBL)接种Vero细胞和PPD试验阴性的豚鼠腹股沟皮下,观察细胞病变和动物的发病情况、PPD反应、组织病理学改变以及分离培养结核分枝杆菌及其L型。结果结核分枝杆菌L型感染72h后,细胞形成空泡、变圆、脱落和裂解,L型粘附于细胞表面或侵入细胞内生长。高剂量L型感染豚鼠,可见局部皮肤红肿及腹股沟淋巴结肿大,但PPD试验阴性。病理学检查可见结核的典型和非典型增生现象,抗酸染色可发现抗酸阳性圆球体。L型感染的动物中,80%病变淋巴结组织可分离到结核分枝杆菌L型,20%可同时检出细菌型。结论细胞壁缺陷结核分枝杆菌仍然具有致病性,但毒力较亲代细菌型明显减弱,不能引起动物形成PPD阳性反应。

关键词：细胞壁结核分枝杆菌结核动物

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高、低煤阶煤层气藏成藏过程及优势地质模型

新疆石油地质 2007年第3期28卷 275-278页

作者：陈振宏宋岩中国科学院广州地球化学研究所广州510640 中国石油石油勘探开发科学研究院北京100083

在构造演化研究的基础上,对比了典型的高、低煤阶煤层气藏的形成过程,探讨了决定现今煤层气藏富集程度的关键因素。高煤阶煤层气藏由于生气量足,成藏过程复杂,通常经历了多次沉降、抬升及改造,到最高演化程度后就不再有煤层气的生成,其... 详细信息

在构造演化研究的基础上,对比了典型的高、低煤阶煤层气藏的形成过程,探讨了决定现今煤层气藏富集程度的关键因素。高煤阶煤层气藏由于生气量足,成藏过程复杂,通常经历了多次沉降、抬升及改造,到最高演化程度后就不再有煤层气的生成,其形成具有明显的阶段性,故现今煤层气的富集程度主要取决于保存条件;而低煤阶煤层气藏成藏过程简单,煤层形成后一般只经历了一次沉降,一次抬升,受现今地下水的补给、运移、排泄和滞流的控制作用。基于以上认识,分别建立了封闭系统高煤阶煤层气藏优势地质模型和盆缘缓坡低煤阶煤层气藏优势地质模型。

关键词：煤层气成藏构造演化对比模型

CoPSe nanoparticles confined in nitrogen-doped dual carbon network towards high-performance lithium/potassium ion batteries

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Chinese Chemical Letters 2025年第1期36卷 568-573页

作者： Zhong-Hui Sun Yu-Qi Zhang zhen-Yi Gu Dong-Yang Qu hong-Yu Guan Xing-Long Wu Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials and Devices c/o School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityChangchun 130024China

The metal ion batteries have gained widespread attention for wearable electronics due to their competitive energy density and long cycling *** the advanced anode materials is significant for next generation energy storage ***,severe electrode volume changes and sluggish redox kinetics are the critical problems for lithium/potassium ion batteries(LIBs/PIBs)towards large-scale ***,we prepare a novel anode material,which consists of reduced graphene oxide wrapping one-dimensional(1D)N-doped porous carbon nanotube with cobalt phosphoselenide(CoPSe)nanoparticles embedded inside them(r GO@Co PSe/NC).Benefited from the dual carbon decorations and ultrafine nanoparticles structure,it achieves a reversible capacity of 245 mAh/g at 5 A/g after 2000 cycles for LIBs and 215 mAh/g at 1 A/g after 500 cycles for *** pseudocapacitance and GITT measurements are used to investigate the electrochemical kinetics of r GO@Co PSe/NC for *** addition,the lithium ion full cell also shows good electrochemical performance when paired with high capacity LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) *** work provides a feasible electrode design strategy for high-efficiency metal ion batteries based on multidimensional nanoarchitecture engineering and composition tailoring.

关键词： Cobalt phosphoselenide Lithium-ion batteries Potassium-ion batteries Reduced graphene oxide Structural stability Full cell

New classification of gastric polyps:An in-depth analysis and critical evaluation

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World Journal of Gastroenterology 2025年第7期31卷 149-155页

作者： Xiao-Hui Liao Ying-Ming Sun hong-Bin chen Department of Gastroenterology The First Hospital of Sanming Affiliated to Fujian Medical UniversityFujian Medical UniversitySanming 365000Fujian ProvinceChina Department of Medical and Radiation Oncology Sanming First HospitalFujian Medical UniversitySanming 365000Fujian ProvinceChina Department of Gastroenterology I Sanming First HospitalFujian Medical UniversitySanming 365000Fujian ProvinceChina

With the widespread use of upper gastrointestinal endoscopy,more and more gastric polyps(GPs)are being *** management strategies often rely on histopathologic examination,which can be time-consuming and may not guide immediate clinical *** paper aims to introduce a novel classification system for GPs based on their potential risk of malignant transformation,categorizing them as"good","bad",and"ugly".A review of the literature and clinical case analysis were conducted to explore the clinical implications,management strategies,and the system's application in endoscopic *** polyps,mainly including fundic gland polyps and inflammatory fibrous polyps,have a low risk of malignancy and typically require minimal or no *** polyps,mainly including hyperplastic polyps and adenomas,pose an intermediate risk of malignancy,necessitating closer monitoring or *** polyps,mainly including type 3 neuroendocrine tumors and early gastric cancer,indicate a high potential for malignancy and require urgent and comprehensive *** new classification system provides a simplified and practical framework for diagnosing and managing GPs,improving diagnostic accuracy,guiding individualized treatment,and promoting advancements in endoscopic *** some challenges,such as the risk of misclassification due to similar endoscopic appearances,this system is essential for the standardized management of *** also lays the foundation for future research into biomarkers and the development of personalized medicine.

关键词： Gastric polyps Classification Fundic gland polyps Inflammatory fibroid polyps Hyperplastic polyps Adenomas Neuroendocrine tumors Early gastric cancer Patient management

Edge supercurrent in Josephson junctions based on topological materials

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 1-12页

作者： Junjie Qi Chui-zhen chen Juntao Song Jie Liu Ke He Qing-Feng Sun X.C.Xie Beijing Academy of Quantum Information Sciences Beijing 100193China School of Physical Science and Technology Soochow UniversitySuzhou 215006China Institute for Advanced Study Soochow UniversitySuzhou 215006China College of Physics and Hebei Advanced Thin Films Laboratory Hebei Normal UniversityShijiazhuang 050024China School of Physics Xi’an Jiaotong UniversityMinistry of Education Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed MatterXi’an 710049China State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Frontier Science Center for Quantum Information Beijing 100084China Hefei National Laboratory Hefei 230088China International Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan UniversityShanghai 200433China

The interplay between novel topological states and superconductivity has garnered substantial interest due to its potential for topological quantum *** Josephson effect serves as a useful probe for edge superconductivity in these hybrid topological *** Josephson junctions based on topological materials,supercurrents exhibit unique quantum interference patterns,including the conventional Fraunhofer oscillations,theΦ_(0)-periodic oscillation,and the 2Φ_(0)-periodic oscillation in response to the external magnetic field(Φ_(0)=h/2e is the flux quantum,h the Planck constant,and e the electron charge).These interference patterns stem from varied Andreev reflection mechanisms and the associated current density *** review seeks to comprehensively examine the theoretical and experimental advancements in understanding the quantum interference patterns of edge supercurrents in Josephson junctions based on quantum spin Hall,quantum Hall,and quantum anomalous Hall systems.

关键词： quantum Hall effect quantum spin Hall effect quantum anomalous Hall effect Josephson junction edge supercurrent Andreev reflection

Optimizing frequency allocation for superconducting quantum processors with frequency-tunable qubits

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 23-36页

作者： Bi-Ying Wang Wuxin Liu Xiangyu chen Shu Xu Jiangyu Cui Man-hong Yung Quantum Science Center of Guangdong-hong Kong-Macao Greater Bay Area(Guangdong) Shenzhen518129China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China International Quantum Academy Shenzhen518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China Shenzhen Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China

As superconducting quantum processors scale,a key challenge is maintaining high coherence times and fidelity control over numerous *** propose an automatic frequency allocation method for frequency-tunable qubits that equally considers coherence-limited fidelity and crosstalk-induced control errors during the allocation *** employing a weighted average of the objective functions for coherence time and crosstalk,we numerically calculate gate fidelity to establish an open-loop optimization for determining suitable weight *** results in an efficient objective function for frequency *** apply our method to frequency-tunable transmon qubits with tunable couplers,both theoretically and *** numerical results demonstrate significant advantages,including substantial reductions in gate errors and faster operation times,especially at higher qubit ***,our approach successfully achieves approximately 99.9%single-qubit fidelity on a nine-qubit chip.

关键词： frequency allocation transmon qubits superconducting processors

Charge polarity inversion and zincophilicity improvement for chitosan separator towards durable aqueous zinc-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 110-119页

作者： Jiaqi Yu Bo Liu hong Ma Zehua Fan Xiang Han Qinghua Tian Jizhang chen Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and Engineering Nanjing Forestry University College of Mathematics and Physics Jinggangshan University Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province School of Chemistry and Chemical Engineering Zhejiang Sci-Tech University

Aqueous zinc-ion batteries encounter enormous challenges such as Zn dendrites and parasitic *** modification is a highly effective strategy to address these *** the advantages of low cost,nontoxicity,biodegradability,good film-forming ability,superior hydro phi licity,and rich functional groups,chitosan is an ideal matrix for constructing ***,the presence of positive charges within chitosan in weakly acidic electrolytes is unfavorable for dendrite ***,Schiff base reaction is introduced to modify chitosan matrix,transforming its charge polarity from positive to ***,NbN with excellent zincophilicity is coated onto chitosan matrix,forming a Janus separator with low thickness of 19 μm and considerably improved mechanical *** resultant separator can promote the transport of Zn2+ions while triggering a repulsive shielding effect against anions,therefore dramatically enhancing Zn2+ion transfer number from 0.28 to *** separator can also facilitate desolvation process,improve exchange current density,restrict two-dimensional Zn2+ion diffusion,and enhance electrochemical kinetics,contributing to significantly inhibited dendrite growth,by-product formation,and hydrogen ***,stable and reversible Zn stripping/plating process is enabled for over 2500 h at 2 mA cm-2and 2 mAh *** great rate capability and excellent cyclability can be achieved for full batteries even under harsh *** work provides new insights into separator design for Zn-based batteries.

关键词： Aqueous zinc-ion batteries Charge polarity regulation Chitosan utilization Dendrite inhibition Separator modification