检索结果-南通市图书馆

Nano Research 2023年第7期16卷 8773-8781页

作者： yue du Wenxue Chen Lina Zhou Rui Hu Shizhu Wang Xueqing Li Yunlong Xie Lun Yang Yisi Liu Zhenhui Liu Institute for Advanced Materials Hubei Normal UniversityHuangshi 435002China College of Material Science and Engineering Jiangsu Key Laboratory of Materials and Technology for Energy ConversionNanjing University of Aeronautics and AstronauticsNanjing 210016China

Transition metal nitrides and carbides have attracted intensive attentions in metal-air battery application due to their metallic electron transport behavior and high chemical stability toward the oxygen reduction reaction(ORR).Herein,the polyoxometalate@polyaniline composite derived WN-W_(2)C heterostructured composite(WN-W_(2)C@pDC)has been fabricated through an in situ nitriding-carbonization strategy,with WN-W_(2)C nanoparticles implanted on N doped carbon *** WN-W_(2)C@pDC demonstrates prominent electrocatalytic performance towards ORR and excellent cycling stability in metal-air battery,which possesses positive half-wave potential and large diffusion limiting current density(0.81 V and 5.8 mA·cm^(-2)).Moreover,it demonstrates high peak power density of 157.4 mW·cm^(-2)as Al-air primary cathode and excellent stability at the discharge-charge test(>500 h)of Zn-air secondary *** excellent activity and durability of WNW_(2)C@pDC catalyst should be attributed to the combined effect of intimate WN-W_(2)C heterointerfaces,unique embedded nanoparticles structure,and excellent electrical media of N doped carbon,confirmed by a series of contrast experiments.

关键词： WN-W_(2)C heterojunctions polyoxometalate@polyaniline composite oxygen reduction reaction metal-air battery

Hierarchical porous yolk-shell Co-N-C nanocatalysts encaged in graphene nanopockets for high-performance Zn-air battery

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第7期16卷 8893-8901页

作者： Yisi Liu Zongxu Li Shizhu Wang Jinnan Xuan Dongbin Xiong Lina Zhou Jianqing Zhou Jun Wang Yahui Yang yue du Institute for Advanced Materials Hubei Normal UniversityHuangshi 435002China Jiangsu Key Laboratory of Materials and Technology for Energy Conversion College of Material Science and EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China National&Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources College of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China

The rational design and preparation of promising cathode electrocatalysts with excellent activity and strong stability for metal-air batteries is a huge *** this work,we innovate an approach of combining solvothermal with high-temperature pyrolysis utilizing zeolitic imidazolate framework(ZIF)-8 and ZIF-67 as the template to synthesize a novel hybrid material of hierarchical porous yolk-shell Co-N-C polyhedron nanocatalysts engaged in graphene nanopocket(yolk-shell Co-N-C@GNP).The obtained catalyst exhibits prominent bifunctional electrocatalytic performance for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)in the alkaline condition,in which the half-wave potential is 0.86 V for ORR,and the over-potential for OER is 0.42 V at 10 mA·cm^(-2).The rechargeable aqueous Zn-air battery fabricated with yolk-shell Co-N-C@GNP cathode deliveries an open circuit voltage(OCV)of 1.60 V,a peak power density of 236.2 mW·cm^(-2),and excellent cycling stability over 94 h at 5 mA·cm^(-2).The quasi-solid-state Zn-air battery(ZAB)using yolk-shell Co-N-C@GNP displays a high OCV of 1.40 V and a small voltage gap of 0.88 V in continuous cycling tests at 2 mA·cm^(-2).This work provides a valuable thought to focus attention on the design of high-efficient bifunctional catalysts with hierarchical porous yolk-shell framework and high-density metal active sites for metal-air battery technologies.

关键词： zeolitic imidazolate framework(ZIF)-67@ZIF-8 yolk-shell graphene nanopocket Bi-functional catalysts Zn-air battery

重度磨耗咬合重建前后髁状突运动轨迹变化的研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中华全科医学 2024年第10期22卷 1660-1664页

作者：田瑞雪谢小飞郭蕴李婕杜悦路晓淼蚌埠医科大学第一附属医院口腔科安徽蚌埠233004 蚌埠市第二人民医院口腔科安徽蚌埠233000

目的对于重度磨耗患者,在下颌运动过程中,髁突的运动轨迹具有关键性意义。因此,本研究分析咬合重建治疗前后此类患者的髁突运动轨迹特性。方法选取2022年1月—2023年6月于蚌埠医科大学第一附属医院口腔科就诊的30例重度磨耗咬合患者为... 详细信息

目的对于重度磨耗患者,在下颌运动过程中,髁突的运动轨迹具有关键性意义。因此,本研究分析咬合重建治疗前后此类患者的髁突运动轨迹特性。方法选取2022年1月—2023年6月于蚌埠医科大学第一附属医院口腔科就诊的30例重度磨耗咬合患者为研究对象,给予咬合重建治疗后,使用CADIAX进行髁突运动轨迹描记。结果在开闭口运动中,不可复性盘前移位侧的Y、Z、S值治疗后降低,X轴和髁突运动始末位置距离(DIF)值升高(P<0.05),而可复性移位侧的X、Y、Z、S值及DIF值均降低(P<0.05)。可复性和不可复性盘前移位侧的矢状髁道倾斜度(SCI)、水平髁道倾斜度(TCI)及5 mm位移时的这些指标同样降低(P<0.05)。在前伸后退运动中,可复性和不可复性盘状物前移位侧沿X轴、Y轴、Z轴和S的位移及DIF治疗后显著降低(P<0.05)。不可复性侧在5 mm位移时的SCI、TCI和最大位移时TCI治疗后均显著降低,可复性侧的TCI和5 mm位移时TCI治疗后也更低(P<0.05)。在侧向运动中,不可复性前移位侧的X轴和Y轴位移及DIF治疗后显著降低。工作侧为可、不可复性盘前移位侧时,髁突空间位移峰值治疗后明显增加。不可复性盘前移位侧在SCI和5 mm位移时的SCI显著降低,可复性盘前移位侧的SCI同样降低(P<0.05)。结论在重度磨耗患者中,髁突轨迹描记可以评估髁突运动的动态范围大小,可以作为重度磨耗患者诊疗效果评价的重要依据。

关键词：重度磨耗咬合重建颞下颌关节

微电泳吗啡和纳洛酮对大鼠腹侧苍白球神经元自发放电活动的影响

在线全文

学校读者我要写书评

暂无评论

医师在线 2024年第1期14卷 22-26页

作者：罗绍钧刘馥宁杜悦嫣贾媛媛沈阳医学院沈阳110034

目的通过微电泳法探讨吗啡和纳洛酮对大鼠腹侧苍白球(VP)神经元自发放电活动的影响。方法采用微电泳的方法,对30只大鼠VP神经元进行微电泳吗啡和纳洛酮,观察并记录VP神经元的自发放电情况。结果吗啡增加VP神经元的放电频率,纳洛酮降低V... 详细信息

目的通过微电泳法探讨吗啡和纳洛酮对大鼠腹侧苍白球(VP)神经元自发放电活动的影响。方法采用微电泳的方法,对30只大鼠VP神经元进行微电泳吗啡和纳洛酮,观察并记录VP神经元的自发放电情况。结果吗啡增加VP神经元的放电频率,纳洛酮降低VP神经元的放电频率(P<0.05)。在微电泳吗啡的基础上进行130 Hz高频电刺激伏隔核(NAc),大部分神经元出现抑制反应。结论吗啡增加VP神经元的放电频率,纳洛酮降低VP神经元的放电频率;在微电泳吗啡的基础上高频电刺激NAC,大多数VP神经元出现抑制反应,可为临床治疗药物成瘾提供实验依据。

关键词：微电泳吗啡纳洛酮药物成瘾腹侧苍白球

Heteropolyacids supported on hierarchically macro/mesoporous TiO_(2):efficient catalyst for deep oxidative desulfurization of fuel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tungsten 2022年第1期4卷 28-37页

作者： Gao-Chen Yang Qi-Yun Pan Peng Yang Yi-Si Liu yue du Kai Wang School of Materials Science and Engineering Hubei UniversityWuhan 430070China Institute for Advanced Materials Hubei Normal UniversityHuangshi 435002China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

The fabrication of polyoxometalates(POMs)-modified TiO_(2)catalysts with connected pore structure has attracted great interests due to its prominent effect on mass transfer and catalytic oxidation ***,we report a series of hierarchically macro/mesoporous(M/m)phosphotungstic acid(HPW)/TiO_(2)composites,which are fabricated by colloidal crystal template method and applied as deep desulfurization catalyst in fuel ***-synthesized hierarchical HPW/TiO_(2)composite is interconnected by ordered macroporous channel with disordered mesoporous embedded on pore ***,Keggintype HPW is homogeneously dispersed on the TiO_(2)*** macro/mesoporous HPW/TiO_(2)shows an excellent catalytic performance,the removal rate for dibenzothiophene in model fuel reaches 99%under the optimum *** high performance of the three-dimensional ordered macropores(3DOM)HPW/TiO_(2)can be attributed to its hierarchically porous which is highly beneficial for the mass transfer during the catalytic ***,the used catalyst could be regenerated by centrifugation and only slight decreasing of the catalytic activity after five cycles.

关键词： Oxidative desulfurization Heteropolyacid Macro/mesoporous Hierarchical porous materials

深圳市“1+N”家庭医生团队成员心理契约现状及其与职业倦怠的关联分析

在线全文

学校读者我要写书评

暂无评论

中华全科医师杂志 2024年第8期23卷 848-854页

作者：温双双杜悦蒋木兰黄良玉莫绮华刘叶张剑威余贺杲马亮中山大学附属第八医院荔村社区健康服务中心深圳518033 中山大学附属第八医院侨香社区健康服务中心深圳518000 中山大学附属第八医院社区健康服务管理中心深圳518033

目的了解深圳市"1+N"家庭医生团队成员对团队的心理契约现状,并探讨心理契约与职业倦怠的关联。方法该研究为横断面研究,于2022年9月30日至10月31日,采用自行设计的一般资料调查问卷、员工心理契约调查问卷(包括组织责任和个人责任2个维... 详细信息

目的了解深圳市"1+N"家庭医生团队成员对团队的心理契约现状,并探讨心理契约与职业倦怠的关联。方法该研究为横断面研究,于2022年9月30日至10月31日,采用自行设计的一般资料调查问卷、员工心理契约调查问卷(包括组织责任和个人责任2个维度)和职业倦怠量表(包括情感耗竭、去人格化和个人成就感3个维度)对深圳市实行家庭医生团队服务模式的92家社区健康服务中心的92个家庭医生团队共361名家庭医生团队成员进行调查。采用Pearson相关性分析与多重线性回归分析心理契约与职业倦怠的关联。结果361名成员中,女性占82.8%(299/361),男性占17.2%(62/361);全科医生占37.5%(129/361),护士占41.8%(151/361)。361名成员心理契约总分(141.6±19.5)分,其中组织责任和个人责任得分分别为(70.6±11.2)、(71.0±9.3)分。职业倦怠量表中,情感耗竭、去人格化、个人成就感得分分别为(17.89±6.82)、(6.51±2.54)、(30.95±5.70)分。不同岗位家庭医生团队成员的组织责任得分和个人责任得分差异有统计学意义(F=7.341、3.119,均P<0.05),全科医生的组织责任和个人责任得分更低;全科医生情感耗竭和去人格化得分更高(F=7.637、2.415,均P<0.05),工作年限≤5年者个人责任感和个人成就感得分更低(F=3.656、4.205,均P<0.05)。相关性分析结果显示,家庭医生团队成员的组织责任得分、个人责任得分与情感耗竭程度(r=-0.618、-0.526,均P<0.01)、去人格化程度(r=-0.404、-0.393,均P<0.01)均呈负相关,与个人成就感均呈正相关(r=0.500、0.558,均P<0.01)。多重线性回归分析结果显示,组织责任对情感耗竭与去人格化存在负向关联(β=-0.554、-0.274,均P<0.01),与个人成就感存在正向关联(β=0.172,P<0.05);个人责任与个人成就感存在正向关联(β=0.404,P<0.01)。结论家庭医生团队中全科医生的心理契约度低,更容易出现情感耗竭和去人格化,工作年限≤5年的成员个人责任感和成就感较低。家庭医生团队成员组织责任感越高,其情感耗竭、去人格化程度越低,个人成就感越高。

关键词：全科医生职业倦怠家庭医生团队心理契约问卷调查

A Cauchy integral formula for(p,q)-monogenic functions withα-weight

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics(A Journal of Chinese Universities) 2024年第3期39卷 545-553页

作者： GAO Long du Xiao-jing LIU yue XIE Yong-hong School of Mathematical Sciences Hebei Normal UniversityShijiazhuang 050024China

Firstly,some properties for(p,q)-monogenic functions withα-weight in Clifford analysis are ***,the Cauchy-Pompeiu formula is ***,the Cauchy integral formula and the Cauchy integral theorem for(p,q)-monogenic function... 详细信息

关键词： (p q)-monogenic functions with-weight Cauchy-Pompeiu formula Cauchy integral formula Cauchy integral theorem

基于巡检移动机器人运动控制的CAN总线通信技术研究

在线全文

学校读者我要写书评

暂无评论

通信电源技术 2024年第14期41卷 154-156页

作者：黄书益杨浩元吴祖斌林师师杜越国家能源集团乐东发电有限公司海南乐东572500

在现代工业应用中,巡检移动机器人凭借其自动化和智能化的特点,已广泛应用于设备监控与维护领域。这些机器人的有效运作依赖于高效的控制系统和可靠的通信技术。其中,控制器局域网(Controller Area Network,CAN)总线技术因其高可靠性和... 详细信息

在现代工业应用中,巡检移动机器人凭借其自动化和智能化的特点,已广泛应用于设备监控与维护领域。这些机器人的有效运作依赖于高效的控制系统和可靠的通信技术。其中,控制器局域网(Controller Area Network,CAN)总线技术因其高可靠性和实时性,在机器人通信系统中占据重要地位。文章详细分析巡检机器人的运动控制需求,并基于这些需求设计针对性的CAN总线通信方案,包括网络结构、数据帧格式以及通信协议和错误处理机制。

关键词：巡检移动机器人运动控制控制器局域网(CAN)总线通信技术

Applicability of various estimation formulas to assess renal function in Chinese children

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2015年第4期11卷 346-351页

作者： yue du Ting-Ting Sun Ling Hou Jin-Jie Guo Xiu-Li Wang Yu-Bin Wu Pediatric Nephrology Shengjing Hospital of China Medical UniversityShenyangLiaoning 110004China

Background:This study was to evaluate the relative applicability of the most commonly used estimation formulas for renal glomerular filtration rate(GFR)of Chinese children with chronic kidney disease(CKD).Methods:One hundred CKD patients of less than 17 years old were divided into two groups by sex which was further categorized intofi ve subgroups based on CKD staging according to the"reference"GFR(rGFR)determined by Tc-99m-DTPA renal dynamic *** GFR markers including serum cystatin C(CysC),β2-microglobulin,creatinine,and blood urea nitrogen were ***:Among all four markers,CysC best refl ected the extent of glomerular damages for CKD stage *** value for estimation of GFR(eGFR)was derived from five different formulas either over-estimated or under-estimated GFR as referenced to rGFR,and the extent of deviations was dependent on gender,age and CKD *** Counahan-Barratt formula and the Schwartz formula gave the most accurate estimations of GFR for CKD stages 1 and 2-3,respectively regardless of gender and age *** operating characteristic analyses indicated that the Counahan-Barratt formula has the highest diagnostic ***:The Counahan-Barratt formula provides the best approximation to rGFR,thereby the highest applicability to Chinese children with CKD of different genders,ages and CKD stages.

关键词： chronic kidney disease Counahan-Barratt formula cystatin C renal glomerularfi ltration rate Schwartz formula

Ransmeier,Johanna,Sold People:Traffickers and Family Life in North China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of History in China 2019年第2期14卷 283-286页

作者： yue du Cornell University

Sold People discusses human trafficking in late Qing and early Republican North *** trafficking broadly as"buying and selling,as well as brokering and transportation with intent to sell"(p.3),this book examines not only the sale of commoner women and children into slavery and prost让ution but also coercive bride-price marriage and adoption.

关键词： Family late well with this only also not