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Modular divergent creation of dual-cocatalysts integrated semiconducting sulfide nanotriads for enhanced photocatalytic hydrogen evolution

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Nano Research 2023年第5期16卷 7967-7973页

作者： Chao Gu yu-qing liu Guo-Qiang liu Hou-Ming Xu Yi Li Xiao-Long Zhang Liang Wu Lei Shi Shi-Kui Han Min-Rui Gao Shu-Hong yu Department of Chemistry Institute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Laboratory for Physical Sciences at the MicroscaleInstitute of EnergyHefei Comprehensive National Science CenterUniversity of Science and Technology of ChinaHefei 230026China Key Laboratory of Advanced Catalytic Materials and Reaction Engineering School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China

Heteronanostructures(HNs)with precise components and interfaces are important for many applications,such as designing efficient and robust solar-to-fuel catalysts via integrating specific semiconductors with favorable band ***,rationally endowing such features with rigorous framework control remains a synthetic ***,we report a modular divergent creation of dual-cocatalysts integrated semiconducting sulfide nanotriads(NTds),comprising both isolated Pd_(x)S oxidation(ox)and MoS_(2) reduction(red)domains within each single CdS counterpart,which exhibit superior photocatalytic activity and stability for hydrogen evolution reaction(HER).The stepwise constructed Pd_(x)S_((ox))−CdS−MoS_(2(red)) NTds possess dualinterfaces facilitating continuous charge separation and segregated active sites accelerating redox reactions,respectively,achieving the HER rate up to 9 mmol·h^(−1)·g^(−1),which is about 60 times higher than that of bare CdS,and show no evidence of deactivation after long-term *** design principle and transformation protocol provide predictable retrosynthetic pathways to HNs with increased degree of complexity and more elaborate functionalities that are otherwise inaccessible.

关键词： heteronanostructures colloidal synthesis semiconducting sulfides photocatalytic hydrogen evolution reaction

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Hepatic focal nodular hyperplasia in children:Imaging features on multi-slice computed tomography

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World Journal of Gastroenterology 2012年第47期18卷 7048-7055页

作者： qing-yu liu Wei-Dong Zhang Dong-Ming Lai Ying Ou-yang Ming Gao Xiao-Feng Lin Department of Radiology Sun Yat-sen Memorial HospitalSun Yat-sen University Department of Radiology Cancer CenterSun Yat-sen University Department of General Surgery Sun Yat-sen Memorial HospitalSun Yat-sen University Department of Pediatrics Sun Yat-sen Memorial HospitalSun Yat-sen University

AIM:To retrospectively analyze the imaging features of hepatic focal nodular hyperplasia(FNH) in children on dynamic contrast-enhanced multi-slice computed tomography(MSCT) and computed tomography angiography(CTA) ***:From September 1999 to April 2012,a total of 218 cases of hepatic FNH were confirmed by either surgical resection or biopsy in the Sun Yat-sen Memorial Hospital of Sun Yat-sen University and the Cancer center of Sun Yat-sen University,including 12 cases(5.5%) of FNH in children(age ≤ 18 years old).All the 12 pediatric patients underwent *** retrospectively analyzed the imaging features of FNH lesions,including the number,location,size,margin,density of FNH demonstrated on pre-contrast and contrastenhanced computed tomography(CT) scanning,central scar,fibrous septa,pseudocapsule,the morphology of the feeding arteries and the presence of draining vessels(portal vein or hepatic vein).RESULTS:All the 12 pediatric cases of FNH had solitary *** maximum diameter of the lesions was 4.0-12.9 cm,with an average diameter of 5.5 ± 2.5 *** majority of the FNH lesions(10/12,83.3%) had well-defined *** scar(10/12,83.3%) and fibrous septa(11/12,91.7%) were commonly found in children with *** scar was either isodense(n = 7) or hypodense(n = 3) on pre-contrast CT images and showed progressive enhancement in 8 cases in the equilibrium *** septa were linear hypodense areas in the arterial phase and isodense in the portal and equilibrium *** was very rare(1/12,8.3%) in pediatric *** the exception of central scars and fibrous septa within the lesions,all 12 cases of pediatric FNH were homogenously enhanced on the contrast-enhanced CT images,significantly hyperdense in the arterial phase(12/12,100.0%),and isodense in the portal venous phase(7/12,58.3%) and equilibrium phase(11/12,91.7%).Central feeding arteries inside the tumors were observed on CTA images for all 12 cases of FNH,whereas no neovascu

关键词： Focal nodular hyperplasia Liver Children Benign hepatic lesions X-ray Computed tomography

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Increase of CD4^+CD25^+ T cells in Smad3^(-/-) mice

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World Journal of Gastroenterology 2006年第15期12卷 2455-2458页

作者： Zi-Bing Wang yu-Fang Cui yu-qing liu Wei Jin Han Xu Zhu-Jun Jiang Ya-Xin Lu Ying Zhang Xiao-Lan liu Bo Dong Department of Immunology Beijing Institute of Radiation Medicine 27 Taiping Road Beijing 100850 China Third Affiliated Hospital of Xinxiang Medical College Xinxiang 453003 Henan Province China Institute of Biotechnology Beijing 100071 China

AIM： To investigate the changes of lymphocyte subpopulations, especially CD4^＋CD25^ T regulatory cells in Smad3^-/- mice. METHODS： Hematological changes and changes of lymphocyte subpopulations were detected in Smad3＂/- mice using cell counter and flow cytometry, respectively, and compared to their littermate controls. RESULTS： The numbers of neutrophils and lymphocytes in peripheral blood were significantly increased in Smad3^-/- mice compared to littermate controls. CD19^＋ expressing cells in blood and spleen, and CD8^＋ T cells in thymus were all markedly decreased in Smad3^-/- mice. More important, Smad3^-/- mice had an increased population of CD4^＋CD25^＋ T cells in peripheral lymphoid tissues, including thymus, spleen, and lymph nodes. CONCLUSION： These observations suggest that the changes of lymphocyte subpopulations might play a role in susceptibility to inflammation of Smad3^-/- mice.

关键词： CD4^+CD25^+ T cells Lymphocyte subpopulation SMAD3 TGF-β signaling

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Microstructures and Hardness of 8CrWMoV Steel with Multiple Types of Ultra Fine Carbides

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材料热处理学报 2004年第5期25卷 279-283页

作者： DAIyu-mei ZHANGZhan-ping MAYong-qing QIyu-hong liuYan-xia yuTao Instituteofmaterialsandtechnology DalianMaritimeUniversityDalian116026

The structure and hardness of 8CrWMoV steel with multiple types of ultra fine carbides are studied after annealing, quenching and tempering in this paper. The results show that multiple types of carbides M3C, M7C3, M23C6, M6C and MC were observed in the annealed steel. Nucleation and coalescence of new carbides, partial dissolution of original carbides in γ phase region during annealing at 800～840℃, result in ultra-fine carbides. Average size of the carbides is0.33～0.34μm in the steel annealed at 800～840℃. Because M3C and M23C6 dissolve easily in austenite, the high hardness HRC63～65 can be obtained by quenching at 840～860℃. Un-dissolved carbides M6C and MC (VC) can effectively prevent the coarsening of austenitic grain, and conduce to obtain very fine martensite. The retained austenite can be easy to decompose during tempering at low and middle temperature due to the precipitation of multiple types of carbides and the good tempering-resistance of the steel is obtained. The microstructure and property of the steel after heat treatment can be accurately explained by calculating based on phase equilibrium *** Words: 8CrWMoV steel, ultra-fine carbide, heat treatment, microstructure,

关键词：显微结构 8CrWMoV钢超细硬质合金硬度热处理

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Ultrastructural localization of glutathione S-transferase-pi in human colorectal cancer cells

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World Journal of Gastroenterology 2000年第3期6卷 454-455页

作者： Wen Jun Guo Guang De Zhou Hong Juan Wu yu qing liu Rui Guang Wu Wei Dong Zhang Department of Pathology Weifang Medical CollegeWeifang 261042Shandong ProvinceChina Weifang People’s Hospital Weifang 261041Shandong ProvinceChina

INTRODUCTION Placental form glutathione S-transferase(GST-pi)isa group of isoenzymes with protein *** the reports showing that GST-pi wassignificantly increased in proliferative hepaticnodule induced by chemical carcinogen and in welldifferentiated carcinoma,more studies haveshown that GST-pi expressed highly inneoplasm,and could be regarded as a

关键词： colorectal neoplasms GSTpi immunoelectron microscope colloid gold

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Effects of positive psychological control intervention on sleep and psychology of officers and soldiers working at sea

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World Journal of Psychiatry 2024年第10期14卷 1538-1546页

作者： yu-qing liu Jian-Liang Sun Mei Jing Guo-Xiang liu Jie Shi Xue-Wei Zhu Fei Wang Mei-Hua Ye Department of Emergency Medicine Naval Specialty Medical CenterShanghai 200052China Department of Nursing Naval Medical UniversityShanghai 200052China Department of Disease Control and Prevention Naval Medical Center of PLANaval Medical UniversityShanghai 200052China

BACKGROUND The working environment of submarine crews is also very *** are in a closed,high-temperature,high-noise,high-vibration and narrow working and living space for a long time,and they suffer from physical discomfort caused by seasickness,which will affect the mental health of officers and *** psychologists have achieved positive results in psychological resilience training for officers and soldiers from the perspective of positive *** present,there are few reports on the correlation between psychological resilience in the field of domestic research on submarine crew psychology,and it is necessary to conduct further *** A total of 121 soldiers working in a confined space of a large ship were randomly divided into an experimental group and a control *** 50 soldiers in the experimental group were given a training course intervention,while the 71 soldiers in the control group did not receive any intervention *** Pittsburgh Sleep Quality Index,Psychological Resilience Scale,military Psycho-logical Stress Self-Assessment Questionnaire,and General Self-Efficacy Scale scores were compared before and 6 months after the *** Under the positive psychological control intervention,except for sleep efficiency(P=0.05),the difference between the remaining dimensions of the Pittsburgh Sleep Quality Index scores and the total scores of the experimental group compared with the control group was statistically significant(P<0.05);the assessment of the psychological condition showed that,in addition to the Psychological Stress Self-assessment Questionnaire for Military Personnel scores(P=0.05),the scores of the Mental Toughness Scale(Dispositional Resilience Scale Resilience II)in the experimental group,General Self-Efficacy Scale scores were statistically significant(P<0.05)compared to *** Positive psychological intervention and control can improve the sleep state and psychologica

关键词： Active psychological control intervention Officers and soldiers Sleep state Mentality Effect

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Imaging/nonimaging microoptical elements and stereoscopic systems based on femtosecond laser direct writing

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Light(Advanced Manufacturing) 2023年第4期4卷 207-233页

作者： Long Huang Zhihan Hong Qi-Dai Chen Yong-Lai Zhang Shaoqing Zhao Yongjun Dong yu-qing liu Hua liu Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV-Emitting Materials and Technology of Ministry of EducationNational Demonstration Center for Experimental Physics EducationNortheast Normal University5268 Renmin StreetChangchun 130024China Wyant College of Optical Sciences The University of Arizona1630 E.University BlvdTucsonArizona 85721USA Key Laboratory on Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012China

The development of modern information technology has led to significant demand for microoptical elements with complex surface profiles and nanoscale surface ***,various micro-and nanoprocessing techniques are used to fabricate microoptical elements and *** laser direct writing(FsLDW)uses ultrafast pulses and the ultraintense instantaneous energy of a femtosecond laser for micro-nano *** exhibits various excellent properties,including nonlinear multiphoton absorption,high-precision processing beyond the diffraction limit,and the universality of processable materials,demonstrating its unique advantages and potential applications in three-dimensional(3D)micro-nano *** has demonstrated its value in the fabrication of various microoptical *** study details three typical principles of FsLDW,several design considerations to improve processing performance,processable materials,imaging/nonimaging microoptical elements,and their stereoscopic ***,a summary and perspective on the future research directions for FsLDW-enabled microoptical elements and stereoscopic systems are provided.

关键词： Femtosecond laser direct writing Microoptical elements 3D printing Micro/nano fabrication

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An integrated supramolecular fungicide nanoplatform based on pH-sensitive metal–organic frameworks

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Chinese Chemical Letters 2023年第10期34卷 153-158页

作者： Chao-Yi Wang yu-qing liu Chengguo Jia Ming-Zhe Zhang Chun-Li Song Changling Xu Ran Hao Jian-Chun Qin Ying-Wei Yang College of Chemistry Jilin UniversityChangchun 130012China College of Plant Science Jilin UniversityChangchun 130062China

The construction of an integrated nanoplatform with controlled fungicide delivery features in the specific microenvironment produced by fungal pathogens is a highly desirable strategy to improve the utilization of fungicides. Herein, we report a supramolecular fungicide delivery system based on benzimidazolemodified NH_(2)-MIL-101(Fe) metal–organic frameworks(B-MIL-101(Fe) MOFs) as carriers loaded with osthole(OS), and β-cyclodextrin(β-CD) as nanovalves to form β-CD@B-MIL-101(Fe)-OS. The nanoplatform can release the loaded OS for fungus control through self-degradation of the MOFs skeleton in an oxalic acid microenvironment produced by Botrytis cinerea. The experimental results exhibit that the constructed supramolecular fungicide delivery system could effectively inhibit mycelial growth and protect the tomatoes from infection by B. cinerea during the ripening stage. This strategy constructs a facile and integrated supramolecular drug delivery system for B. cinerea control and opens up a new avenue for the sustainable development of modern agriculture.

关键词： Controlled release Fungicidenanoplatform Host-guest chemistry Microenvironment-responsive Supramolecularchemistry

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Dendrowardol C, a novel sesquiterpenoid from Dendrobium wardianum Warner

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Natural Products and Bioprospecting 2013年第3期3卷 89-92页

作者： Wei-Wei FAN Feng-qing XU Fa-Wu DONG Xiao-Nian LI Yan LI yu-qing liu Jun ZHOU Jiang-Miao HU State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China

Dendrowardol C(1)-a novel sesquiterpenoid,with an unprecedented 4/5/6/6 tetracyclic carbon backbone,together with two known cyclopacamphane-type sesquiterpenoids;dendronobilin I(2)and dendrobane A(3)were isolated from the stems of Dendrobium wardianum *** structure of 1 was established on the basis of spectroscopic data and the absolute configuration was determined by single-crystal X-ray diffraction *** hypothetical biosynthetic pathway of 1 was *** 1 showed no cytotoxic activity against human tumor cell lines HL-60,SMMC-7721,A-549,MCF-7,and SW480.

关键词： Dendrobium wardianum Warner sesquiterpenoid dendrowardol X-ray

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基于遗传算法优化最小二乘支持向量回归机的平板型固体氧化物燃料电池的控制相关动态辨识建模（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2014年第10期15卷 829-839页

作者： Hai-bo HUO Yi JI Xin-jian ZHU Xing-hong KUANG yu-qing liu Department of Electrical Engineering Shanghai Ocean University Fuel Cell Research Institute Shanghai Jiao Tong University

研究目的:为了同时预测固体氧化物燃料电池(SOFC)的电压、温度动态特性和设计控制器,建立SOFC的控制相关动态辨识模型。创新要点:为了建立SOFC更精确的最小二乘支持向量回归机(LSSVR)动态模型,采用遗传算法(GA)优化LSSVR的参数。所建GA-... 详细信息

研究目的:为了同时预测固体氧化物燃料电池(SOFC)的电压、温度动态特性和设计控制器,建立SOFC的控制相关动态辨识模型。创新要点:为了建立SOFC更精确的最小二乘支持向量回归机(LSSVR)动态模型,采用遗传算法(GA)优化LSSVR的参数。所建GA-LSSVR模型可同时预测SOFC的电压和温度动态特性。研究方法:1.分析SOFC的电化学和能量平衡子模型。2.利用所选择的最优LSSVR参数,建立了SOFC的GA-LSSVR动态辨识模型。通过仿真分析和比较,验证了所建模型的有效性(图3和4)。3.利用所建模型的预测结果,与模拟退火算法优化最小二乘支持向量回归机(SAA-LSSVR)和5折交叉验证最小二乘支持向量回归机(5FCV-LSSVR)模型的预测结果进行了比较,表明所建立的GA-LSSVR模型具有较高的预测精度(表3和4)。重要结论:通过比较SAA-LSSVR和5FCV-LSSVR模型的预测结果,发现所建GA-LSSVR模型具有较好的预测性能和精度。基于所建立的GA-LSSVR模型可进行有效的多变量控制器设计。

关键词：固体氧化物燃料电池(SOFC) 控制相关动态建模最小二乘支持向量回归机

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