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Large-scale synthesis of noble-metal-free phosphide/CdS composite photocatalysts for enhanced H_2 evolution under visible light irradiation

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Chinese Journal of Catalysis 2018年第3期39卷 527-533页

作者： Baojun Ma Ruisheng Zhang Keying Lin hongxia liu Xiaoyan Wang Wanyi liu Haijuan Zhan State Key Laboratory of High‐Efficiency Coal Utilization and Green Chemical Engineering College of Chemistry and Chemical Engineering Ningxia University Yinchuan 750021 Ningxia China

Photocatalytic H2evolution under visible light irradiation is an ideal process for solving energy *** low cost of photocatalysts and high efficiency of hydrogen evolution are the two key factors to realize the industrialization of the *** substitution of a noble‐metal cocatalyst with a non‐noble‐metal catalyst can significantly reduce the cost of the *** largescale synthesis and assembly of semiconductors and non‐noble‐metal cocatalysts to form photocatalysts through a simple method can further decrease the cost of ***,we report a large‐scale and low‐cost coprecipitation method to form phosphide/CdS photocatalysts to realize photocatalytic *** and MoP cocatalysts significantly enhanced the photocatalytic production of *** optimal H2production rates on CoP/CdS and MoP/CdS were140and78μmol/h,which were7.0and4.0times higher than those obtained with bare CdS,respectively,and2.0times and1.1times higher than those obtained with1.0%Pt/CdS,*** work provides a practical method for the large‐scale preparation of low‐cost photocatalysts.

关键词： Coprecipitation Cocatalyst Phosphide Photocatalysis Hydrogen production

基于氧化应激和炎症探讨健脾解毒汤治疗银屑病脾虚湿盛证大鼠的作用机制

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中国医药导报 2024年第5期21卷 6-10,23页

作者：许孟月姚文汇左永杰刘红霞新疆医科大学第四临床医学院新疆乌鲁木齐830000 新疆医科大学附属中医医院皮肤科新疆乌鲁木齐830000

目的基于氧化应激和炎症探讨健脾解毒汤对银屑病脾虚湿盛证大鼠影响的作用机制。方法将48只6~8周龄,体重180~200 g的SPF级SD雄性大鼠按照随机数字表法分为空白组、模型组、阳性药物对照组及健脾解毒汤低、中、高剂量组,每组8只。空白组... 详细信息

目的基于氧化应激和炎症探讨健脾解毒汤对银屑病脾虚湿盛证大鼠影响的作用机制。方法将48只6~8周龄,体重180~200 g的SPF级SD雄性大鼠按照随机数字表法分为空白组、模型组、阳性药物对照组及健脾解毒汤低、中、高剂量组,每组8只。空白组背部除毛后涂抹凡士林,其余各组涂抹5%咪喹莫特乳膏(62.5 mg,2次/d)及灌胃大黄颗粒剂(10 ml/kg,2次/d),持续10 d构建银屑病脾虚湿盛证模型。造模成功后,健脾解毒汤低、中、高剂量组分别予2.32、4.64、9.26 g/kg健脾解毒汤灌胃;阳性药物对照组给予甲氨蝶呤片0.97 mg/kg灌胃;空白组、模型组给予等量生理盐水。给药14 d后,比较六组银屑病面积和严重程度指数(PASI)、组织病理情况、白细胞介素-22(IL-22)、丙二醛(MDA)、谷胱甘肽(GSH)含量及超氧化物歧化酶(SOD)活力,比较六组皮损处血红素加氧酶-1(HO-1)蛋白表达情况。结果健脾解毒汤低、中、高剂量组红斑、鳞屑、浸润、进食排便情况优于模型组。健脾解毒汤低、中、高剂量组PASI低于模型组,且健脾解毒汤高剂量组低于健脾解毒汤低、中剂量组(P<0.05)。与模型组比较,健脾解毒汤低、中、高剂量组表皮增生及角化不全减轻,表皮突变短,真皮血管扩张减弱。模型组血清SOD活力、GSH及皮肤组织HO-1水平低于空白组,血清MDA、IL-22水平高于空白组(P<0.05)。健脾解毒汤低、中、高剂量组血清GSH高于模型组,健脾解毒汤中、高剂量组血清SOD活力高于模型组,血清MDA、IL-22低于模型组,健脾解毒汤高剂量组皮肤组织HO-1高于模型组(P<0.05)。健脾解毒汤中、高剂量组血清SOD活力、GSH水平高于健脾解毒汤低剂量组,血清MDA、IL-22水平低于健脾解毒汤低剂量组,健脾解毒汤高剂量组皮肤组织HO-1高于健脾解毒汤低剂量组(P<0.05)。健脾解毒汤高剂量组血清SOD活力、GSH及皮肤组织HO-1水平高于健脾解毒汤中剂量组,血清MDA低于健脾解毒汤中剂量组(P<0.05)。结论健脾解毒汤对银屑病脾虚湿盛证大鼠病变症状具有一定的改善作用,与降低血清中炎症指标,发挥抗感染及抗氧化应激作用相关。

关键词：银屑病健脾解毒汤氧化应激炎症

长链非编码RNALINC00184调控老年高血压血管内皮细胞的增殖与迁移

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老年医学与保健 2024年第4期30卷 1033-1040页

作者：赵鑫刘红霞朱理安胡耀敏上海交通大学医学院附属仁济医院老年医学科上海200127

目的高血压是老年人动脉粥样硬化发生和发展的重要致病因素。血管内皮细胞的损伤和衰老加速动脉粥样硬化的发生和发展。作为基因转录和翻译的重要调控元件,长链非编码RNA(lncRNA)已经被证实在多种生物学过程中发挥重要作用,但其在高血... 详细信息

目的高血压是老年人动脉粥样硬化发生和发展的重要致病因素。血管内皮细胞的损伤和衰老加速动脉粥样硬化的发生和发展。作为基因转录和翻译的重要调控元件,长链非编码RNA(lncRNA)已经被证实在多种生物学过程中发挥重要作用,但其在高血压引起动脉粥样硬化以及血管内皮损伤中的作用和分子机制远未了解清楚。方法回顾性收集上海交通大学医学院附属仁济医院2019年5月—2020年12月老年医学科门诊具备完整病史资料的老年患者(≥60岁)共51例,根据血压及颈动脉内膜中层厚度(CIMT)分为3组:高血压伴动脉粥样硬化组、高血压不伴动脉粥样硬化组和无高血压的动脉粥样硬化组。通过荧光定量PCR检测高血压以及高血压伴动脉粥样硬化患者血液中的lncRNA的表达。在人血管内皮细胞中,通过转染siRNA的方式敲减LINC00184,通过免疫荧光等形态学方法检测内皮细胞的增殖与迁移是否受到影响。利用荧光素酶报告基因、免疫印迹等方法,明确LINC00184参与调控血管内皮细胞的作用机制。结果3组间的CIMT、收缩压和舒张压有显著差异(P<0.05);LINC00184在老年高血压患者的血浆中高表达;LINC00184在人血管内皮细胞中高表达,且主要分布于细胞质中;敲减LINC00184导致血管内皮细胞增殖和迁移能力增强;LINC00184通过影响miR-17调控PTEN的表达参与血管内皮细胞的功能。结论老年高血压相关LINC00184参与调控血管内皮细胞的增殖和迁移,为进一步探究高血压导致的靶器官损伤的分子机制提供理论依据。

关键词：老年高血压长链非编码RNA 血管内皮细胞 LINC00184

Organochlorine pesticide residues in surface water from Sichuan Basin to Aba Prefecture profile, east of the Tibetan Plateau

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Frontiers of Earth Science 2015年第2期9卷 248-258页

作者： hongxia liu Ying HU Shihua QI Xinli XING Yuan ZHANG Dan YANG Chengkai QU State Key Laboratory of Biogeology and Environmental Geology School of Environmental Studies China University of Geosciences Wuhan 430074 China Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation School of Environmental Science and Engineering Hubei Polytechnic University Huangshi 435003 China Faculty of Engineering China University of Geosciences Wuhan 430074 China

Organochlorine pesticides （OCPs） found in rivers from the Sichuan Basin to Aba Prefectttre profile were analyzed to assess possible health risks to adults and children who use the river as a source of drinking water. OCP concentrations in surface water ranged between 22.29-274.28 ng·L^-1. Compared with other published data around the world, OCP levels in this study were moderate. Among all OCPs, hexachlorobenzene （HCB） and hexa- chlorocyclohexanes （HCHs） were the predominant com- pounds. Higher concentrations of OCPs were attributed close to the agricultural fields of the Sichuan Basin, current OCPs inputs, and long-range atmospheric transport from abroad. Various spatial patterns of OCPs in the profile might be affected by the usage and physicochemical properties of the pesticides, in addition to the adjacent geographical environment. The health risk assessment indicated that most OCPs had little impact on human health according to the acceptable risk level for carcino- gens （10^-6） recommended by the US EPA. However, carcinogenic effects caused by heptachlor, Aldrin, HCB, and a-HCH might occur in drinking water. The risk of negative impacts caused by OCPs is much higher for children than for adults.

关键词： organochlorine pesticides (OCPs) surfacewater spatial distribution health risk assessment TibetanPlateau

Two-dimensional subthreshold current model for dualmaterial gate SOI nMOSFETs with single halo

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Frontiers of Electrical and Electronic Engineering in China 2009年第1期4卷 98-103页

作者： Suzhen LUAN hongxia liu Renxu JIA Jin WANG School of Microelectronics Xidian UniversityXi’an 710071China

A two-dimensional(2D)model for the subthreshold current in the dual-material gate(DMG)siliconon-insulator(SOI)MOSFET with a single halo is *** model considers single halo doping in the channel near the source and a dual-material gate to derive the channel potential using the explicit solution of the 2D Poisson’s *** with the conventional driftdiffusion theory,this results in the development of a subthreshold current model for the novel *** verification is carried out using the 2D device simulator *** agreement is obtained between the calculations and the simulated results of the model.

关键词： dual-material gate(DMG) silicon-on-insulator(SOI) electron mobility

Nitrogen and fluorine co-doped TiO_(2)/carbon microspheres for advanced anodes in sodium-ion batteries: High volumetric capacity, superior power density and large areal capacity

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Journal of Energy Chemistry 2022年第5期31卷 104-112页

作者： Dan Lv Dongdong Wang Nana Wang hongxia liu Shaojie Zhang Yansong Zhu Kepeng Song Jian Yang Yitai Qian Key Laboratory of Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJinan 250100ShandongChina Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongInnovation CampusNorth WollongongNew South Wales 2500Australia Key Laboratory for Green Chemical Technology of Ministry of Education R&D Center for Petrochemical TechnologyTianjin UniversityTianjin 300072China Hefei National Laboratory for Physical Science at Microscale Department of ChemistryUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

Fast charging and high volumetric capacity are two of the critical demands for sodium-ion batteries(SIBs).Although nanostructured materials achieve outstanding rate performance,they suffer from low tap density and small volumetric ***,how to realize large volumetric capacity and high tap density simultaneously is very ***,N/F co-doped TiO_(2)/carbon microspheres(NF- TiO_(2)/C)are synthesized to achieve both of *** calculations reveal that N and F co-doping increases the contents of oxygen vacancies and narrows the bandgaps of TiO_(2) and C,improving the electronic conductivity of NF- TiO_(2)/***,NF- TiO_(2)/C exhibits the high binding energy and low diffusion energy barrier of Na+,significantly facilitating Na+storage and Na+***,NF- TiO_(2)/C offers a high tap density(1.51 g cm^(-3)),an outstanding rate performance(125.9 mAh g^(-1) at 100 C),a large volumetric capacity(190 mAh cm^(-3) at 100 C),a high areal capacity(4.8 mAh cm^(-2))and an ultra-long cycling performance(80.2%after 10,000 cycles at 10 C)*** addition,NF- TiO_(2)/C||Na_(3)V_(2)(PO_(4))_(3) full cells achieve an ultrahigh power density of 25.2 kW kg^(-1).These results indicate the great promise of NF- TiO_(2)/C as a high-volumetric-capacity and high-power-density anode material of SIBs.

关键词： TiO_(2) Heteroatom doping Volumetric capacity Areal capacity Sodium ion batteries

Astrocytic effect of low molecular weight heparin-superoxide dismutase conjugate in interleukin-6 overexpressing mice following local cerebral ischemia

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Neural Regeneration Research 2009年第2期4卷 148-151页

作者： Yizhao Li Guixiang Cui Qingde Wang hongxia liu Xiaoxia Zhang Fengshan Wang Keqin Xie Shandong Provincial Disabled Persons Rehabilitation Center Jinan 250001 Shandong Province China Department of Rehabifitation Qilu Hospital of Shandong University Jinan 250012 Shandong Province China Department of Neurology Hospital of Shandong Aluminum Company Zibo 255069 Shandong Province China The Third People's Hospital of Heze City Heze 274000 Shandong Province China College of Basic Medical Sciences Shandong University of Traditional Chinese Medicine Jinan 250014 Shandong Province China Biochemical Pharmaceutics Institute School of Pharmaceutical Sciences of Shandong University Jinan 250012 Shandong Province China Toxicology Institute School of Public Health Shandong University Jinan 250012 Shandong Province China

BACKGROUND： Studies have shown that low molecular weight heparin-superoxide dismutase conjugate exhibits a remarkable neuroprotective effect. OBJECTIVE： To investigate the effect of low molecular weight heparin-superoxide dismutase conjugate on astrocytes in an interleukin-6 （IL-6） overexpressing mice following local cerebral ischemia. DESIGN, TIME AND SETTING： Randomized, cytological, controlled, animal study was performed in the Department of Physiology and Neuroscience, Neurology and Biochemistry and Molecular Biology, Medical University of South Carolina from January 2005 to March 2005. MATERIALS： Nine IL-6 transgenic mice, irrespective of gender, were randomly divided into three groups： sham-operated, model, and treatment, with three mice in each group. With exception of the sham-operated group, right middle cerebral artery occlusion was induced in the mice. Expression of glial fibrillary acidic protein, an astrocyte marker, was determined by immunohistochemistry. Low molecular weight heparin-superoxide dismutase conjugate was purchased from Biochemistry and Biotechnique Institute, Shandong University. METHODS： Two minutes prior to ischemia induction, 0.5 mL/kg saline or 20 000 U/kg low molecular weight heparin-superoxide dismutase conjugate were administrated via the femoral artery in the model group and treatment group, respectively. The sham-operated group underwent the same protocols, with the exception of occlusion and treatment. MAIN OUTCOME MEASURES： The number of glial fibrillary acidic protein-positive cells was quantified under light microscopy （x200）. RESULTS： In the sham-operated group, there were a large number of astrocytes in the IL-6 transgenic mice. However, the cell bodies were small, and the branches were few and thin. The number of astrocytes in the model group was remarkably less than the sham-operated group. Compared to the model and sham-operated groups, the number of astrocytes significantly increased, and the cell body becam

关键词： cerebral ischemia astrocytes low molecular weight heparin-superoxide dismutase conjugate

Fabrication of 150-nm Al_(0.48)In_(0.52)As/Ga_(0.47)In_(0.53)As mHEMTs on GaAs substrates

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Science China(Physics,Mechanics & Astronomy) 2012年第12期55卷 2389-2391页

作者： WU XiaoFeng liu hongxia LI HaiOu LI Qi HU ShiGang XI ZaiFang ZHAO Jin School of Infomation and Electrical Engineering Hanan University of Science and TechnologyXiangtan 111201 China Guilin University of Electronic Technology Guilin 541004China School of Microelectronics Xidian University Xi'an 710071China

High performance 150-nm gate-length metamorphic Al0.48In0.52As/Ga0.47In0.53 As high electron mobility transistors(mHEMTs) with very good device performance have been successfully fabricated.A T-shaped gate is fabricated by using a combined technique of optical and e-beam photolithography,which is beneficial to decreasing parasitic capacitance and parasitic resistance of the *** ohmic contact resistance R c is as low as 0.03 mm when using a novel ohmic contact metal system(Ni/Ge/Ti/Au).The devices exhibit excellent DC and RF performance.A peak extrinsic transconductance of 775 mS/mm and a maximum drain current density of 720 mA/mm are *** unity current gain cut-off frequency(fT) and the maximum oscillation frequency(f max) are 188.4 and 250 GHz,respectively.

关键词： AlInAs/GaInAs mHEMTs GaAs substrate T-gate

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中瑞农业科技创新合作的必要性及对策建议

农业科技管理 2024年第1期43卷 49-52,56页

作者：刘洪霞陈天金曲春红计晗谢琳中国农业科学院农业信息研究所北京100081 中国农业科学院国际合作局北京100081

瑞士作为我国首个创新战略伙伴关系国,与我国有着良好的农业科技合作基础。两国农业科技创新需求互补性强、利益与战略契合点多、合作领域广泛、合作空间与潜力大。加强两国不同利益相关方在农业科技领域的创新合作,将有助于共同应对区... 详细信息

瑞士作为我国首个创新战略伙伴关系国,与我国有着良好的农业科技合作基础。两国农业科技创新需求互补性强、利益与战略契合点多、合作领域广泛、合作空间与潜力大。加强两国不同利益相关方在农业科技领域的创新合作,将有助于共同应对区域性或全球性重大农业挑战。文章阐述了双方在农业科技创新领域合作的必要性,分析了双方农业科技发展的特点以及双方合作发展态势,剖析了双方农业科技创新合作中存在的问题,并从项目管理机制、合作成果评价机制、项目资助机制、相关利益方参与机制等方面提出了双方在农业科技创新领域加强合作的对策建议,以期为两国未来合作机制的深入探索提供借鉴与参考。

关键词：瑞士农业科技创新合作必要性合作机制