检索结果-南通市图书馆

Chinese Chemical Letters 2021年第11期32卷 3591-3595页

作者： Xuyun Gao Bo Li Xuzhuo Sun baofan wu Yanping Hu Zhichao Ning Jun Li Ning Wang College of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry&Materials ScienceNorthwest UniversityXi'an 710069China

Crystalline engineering and heterostructure have attracted much attention as effective strategies to improve the electrocatalytic activity for hydrogen evolution reaction(HER).In this study,a new heterostructure catalyst(Ru/RuS_(2)@N-rGO)with low crystallinity was fabricated by a simple and low-temperature method for HER in alkaline solution,applying the Na_(2)SO_(4)as S source and polypyrrole as N *** through the controllable crystalline engineering and composition ratio of Ru and RuS_(2),the Ru/RuS_(2)@N-rGO heterocatalyst at the calcining 500°C revealed highly efficient HER activity with overpotential 18 mV at a current density 10 mA/cm^(2)and remarkable stability for 24 h in 1.0 mol/L *** work provides a facile and effective method in designing advanced electrocatalysts for HER in the alkaline electrolytes by synergistically structural and component modulations.

关键词： Low crystallinity Ru/RuS_(2)heterostructure Graphene Electrocatalytic hydrogen evolution Alkaline solution

Ultrasamll Ru Nanoparticles Highly Dispersed on Sulfur Doping Graphene for HER with High Electrocatalytic Performance

在线全文

学校读者我要写书评

暂无评论

Ultrasamll Ru Nanoparticles Highly Dispersed on Sulfur Dopin...

Facile synthesis of two-dimensional MoS_(2)/WS_(2) lateral heterostructures with controllable core/shell size ratio by a one-step chemical vapor deposition method

河南省化学会2020年学术年会

作者： Yu Liu baofan wu Haichang Chang Xin Wang Jing Chen Xuzhuo Sun College of Chemistry and Chemical Engineering Henan University of Technology

Nanostructuring and metal-support interactions have been explored as efficient strategies to improve the electrocatalytic activity in heterogeneous *** this study,we have fabricated the ultrasmall Ru nanoparticles dispersed on S doping graphene (denoted as Ru/S-rGO) by a facile"one-pot"*** was found that both the S doping and moderate degree of oxidization of GO can induce the formation and high dispersion of the ultrasmall Ru nanoparticles (NPs) with larger electrochemically active surface areas for exposing more active *** metal-support interaction between the S-doped graphene and Ru nanoparticles was observed from the XPS and electronic charge-differences *** resulted in the decrease in the electron density of Ru,which facilitated the electrons release from HO and the H–OH bond *** results of the density functional theory (DFT) calculation further confirmed that the S dopants can reduce the energy barrier of breaking H–OH bond to accelerate the water dissociation during the alkaline *** current density 20 m A cm,lowest overpotential of 14 mV,superior to the benchmark Pt/C in alkaline solution,was observed for Ru/*** observed lowest value of overpotential was due to the ultrasmall size,high dispersion and strong metal-support ***/S-rGO-24 also exhibited remarkable stability and high catalytically durability in 1 M KOH solution.

关键词： Ruthenium nanoparticle S doping graphene Metal-support interaction High performance Hydrogen evolution reaction

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2021年第10期64卷 88-94页

作者： baofan Sun Jiajun Chen Xinyi Zhou Min Liu Yaping wu Yuanzheng Xia Xu Li Zhiming wu Junyong Kang Department of Physics Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient DevicesFujian Provincial Key Laboratory of Semiconductor Materials and ApplicationsXiamen UniversityXiamen 361005China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

Heterostructures based on two-dimensional(2D) transition-metal dichalcogenides(TMDCs) possess unique electronic and optical properties, which open up unprecedented opportunities in nanoscale optoelectronic devices. Synthesizing high-quality 2D TMDC heterostructures with different core/shell size ratios is of great significance for practical applications. Here, we report a simple one-step chemical vapor deposition(CVD) method for fabricating MoS2/WS2 lateral heterostructures with controllable core/shell size ratio. An ultrathin MoO3/WO3 film prepared by thermal evaporation was used as the precursor, and a step-like heating process was adopted to separately grow MoS2 and WS2 monolayers by taking advantage of the different melting points of MoO3 and WO3 sources. High-quality MoS2/WS2 lateral heterostructures with sharp interfaces were fabricated by optimizing the key growth parameters. Furthermore, the core/shell size ratio of heterostructures could be easily controlled by changing the thickness ratio of MoO3/WO3 film, and an approximately linear dependence between them is revealed. Compared with MoS2 or WS2 monolayers, the MoS2/WS2 heterostructure exhibited a shortened exciton lifetime owing to the type-Ⅱ energy band alignment, which is conducive to the application of high-performance devices. This work provides a facile strategy for the synthesis of 2D lateral heterostructures with controllable size ratio.

关键词： lateral heterostructures controllable size ratio chemical vapor deposition thermal evaporation one-step growth

含奥沙利铂的一线化疗对左右半结肠癌的临床效果对比研究

在线全文

学校读者我要写书评

暂无评论

中国现代医生 2024年第31期62卷 68-71页

作者：章宝繁吴圣豪上海大学附属第二医院肿瘤内二科浙江温州325000 上海大学附属第二医院血液化疗科浙江温州325000

目的比较含奥沙利铂的一线化疗对左半结肠癌和右半结肠癌的临床疗效。方法选取2020年1月至2024年1月于上海大学附属第二医院就诊的结肠癌患者120例,根据肿瘤所在位置将其分为左半结肠癌组(60例)和右半结肠癌组(60例)。两组患者均给予含... 详细信息

目的比较含奥沙利铂的一线化疗对左半结肠癌和右半结肠癌的临床疗效。方法选取2020年1月至2024年1月于上海大学附属第二医院就诊的结肠癌患者120例,根据肿瘤所在位置将其分为左半结肠癌组(60例)和右半结肠癌组(60例)。两组患者均给予含奥沙利铂的一线化疗方案治疗2个周期,比较两组患者的疾病控制率、血清肿瘤标志物、血清炎症因子、癌因性症状评分、生存质量和不良反应发生率。结果治疗后,左半结肠癌组患者的疾病控制率显著优于右半结肠癌组(χ^(2)=22.224,P<0.001);左半结肠癌组患者的血清癌胚抗原、糖类抗原125、糖类抗原153、C反应蛋白、白细胞介素-6水平均显著低于右半结肠癌组(P<0.05);左半结肠癌组患者的癌因性疼痛评分、癌因性疲乏评分均显著低于右半结肠癌组(P<0.05);左半结肠癌组患者的生存质量优于右半结肠癌组(P<0.05)。结论含奥沙利铂的一线化疗对左半结肠癌患者的近期疗效更好,肿瘤进展控制良好,患者的临床症状得以改善,生存质量得以提高。

关键词：左半结肠癌右半结肠癌化疗奥沙利铂

维普期刊数据库博看期刊

EZH2在慢性髓细胞性白血病大鼠中调控机制分析

在线全文

学校读者我要写书评

暂无评论

中国现代医生 2019年第31期57卷 34-37页

作者：章宝繁吴圣豪浙江省温州市中心医院化疗科2

目的分析EZH2在慢性髓细胞性白血病大鼠中调控机制。方法选取SPF级Wistar雌性大鼠60只,制备慢性髓细胞性白血病(CML)模型,shEZH2(EZH2敲低)组和shEZH2+IM组大鼠行EZH2敲低实验,移植第2天,IM组、shEZH2+IM组灌胃剂量为100 mg/kg的伊马替... 详细信息

目的分析EZH2在慢性髓细胞性白血病大鼠中调控机制。方法选取SPF级Wistar雌性大鼠60只,制备慢性髓细胞性白血病(CML)模型,shEZH2(EZH2敲低)组和shEZH2+IM组大鼠行EZH2敲低实验,移植第2天,IM组、shEZH2+IM组灌胃剂量为100 mg/kg的伊马替尼(IM)药液,shEZH2组、溶剂组灌胃20%磺丁基-β-环糊精(Captisol)。末次给药后解剖观察各组大鼠脾脏肿大和结节情况,检测大鼠髓系细胞与白血病细胞比例、白血病祖细胞比例、白血病干细胞比例情况和骨髓内mTOR、Akt及PI3K蛋白表达量。结果 shEZH2组及shEZH2+IM组大鼠脾脏和骨髓内髓系细胞与白血病细胞比例较溶剂组显著降低,差异有统计学意义(P<0.05);shEZH2组及shEZH2+IM组大鼠脾脏和骨髓内中粒细胞巨噬细胞祖细胞、共同淋巴系祖细胞比例较溶剂组显著降低,差异有统计学意义(P<0.05);shEZH2组及shEZH2+IM组大鼠骨髓内mTOR、Akt及PI3K蛋白表达较溶剂组升高,差异有统计学意义(P<0.05)。结论敲低CML大鼠移植细胞内EZH2,可有效降低骨髓和脾脏内CML细胞不同亚群细胞比例,其作用机制可能和上调PI3K/AKT/mTOR信号通路内各蛋白表达有关。

关键词：慢性髓细胞性白血病组蛋白赖氨酸甲基转移酶EZH2 造血干细胞白血病干细胞

加强口腔专业研究生临床实习阶段医患沟通技能的培养

在线全文

学校读者我要写书评

暂无评论

中国医学伦理学 2017年第3期30卷 339-342页

作者：吴勇付帅黎明李军李宝繁昆明医科大学附属口腔医院云南昆明650100

加强医学研究生在临床实习阶段医患沟通能力的培养,建立正确的医患沟通意识,对提高医学教学质量、培养合格的医学人才具有重要意义。通过分析医学研究生医患沟通中常见的问题:患者对实习生的不信任;实习生在患者面前紧张拘束、谨言慎行... 详细信息

加强医学研究生在临床实习阶段医患沟通能力的培养,建立正确的医患沟通意识,对提高医学教学质量、培养合格的医学人才具有重要意义。通过分析医学研究生医患沟通中常见的问题:患者对实习生的不信任;实习生在患者面前紧张拘束、谨言慎行;部分实习生不注重自身形象;称呼患者不得体。并指出如何加强口腔医学研究生医患沟通技能培训的途径:开设医患沟通能力培训相关讲座和课程;在临床实习阶段开展医患沟通技巧培训;重视医患沟通能力实践。

关键词：医患沟通临床实习技能培养医学研究生

国医大师沈宝藩痰瘀同治法治疗缺血性脑卒中的临床经验及其疗效机理探析

在线全文

学校读者我要写书评

暂无评论

辽宁中医杂志 2021年第8期48卷 42-45页

作者：谢蓉黄育文李先涛吴玉媚陈昕连新福广东省中医院珠海医院神经内科广东珠海519000

缺血性脑卒中,祖国医学又称"中风",是具有高发病率,高致残率,高死亡率的慢性非传染性疾病。近年来,发病年龄呈年轻化趋势。痰瘀互结证作为心脑血管疾病的第一大证候,是缺血性卒中病情加重的标志。传统中药医治疗缺血性卒中源远流长,痰... 详细信息

缺血性脑卒中,祖国医学又称"中风",是具有高发病率,高致残率,高死亡率的慢性非传染性疾病。近年来,发病年龄呈年轻化趋势。痰瘀互结证作为心脑血管疾病的第一大证候,是缺血性卒中病情加重的标志。传统中药医治疗缺血性卒中源远流长,痰瘀同治之法治疗缺血性卒中的临床疗效已经是得到肯定的,目前对其疗效机理的认识也在不断加深,该文将对国医大师沈宝藩痰瘀同治法治疗缺血性卒中的经验及其疗效机理作一阐述。

关键词：国医大师沈宝藩名医经验痰瘀同治缺血性卒中疗效机制