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Journal of Environmental Sciences 2024年第5期139卷 543-555页

作者： Kai Xu Yunyu Guo Chenghua Xing Ronglong Fu Bin Zou rongchuan liu Luyi Cai Jianfang Yan Xi-Lin Wu Miaozhen Cai College of Geography and Environmental Sciences Zhejiang Normal UniversityJinhua 321004China College of Agriculture Jinhua PolytechnicJinhua 321007China

Cadmium(Cd)pollution poses a serious threat to plant growth and *** have shown great application potential for alleviation of Cd toxicity to *** this study,we applied graphitic carbon nitride nanosheets(g-C_(3)N_(4)NSs)for alleviation of Cd-toxicity to soybean(Glycine max L.).The g-C_(3)N_(4)NSs supplementation significantly improved plant growth and reduced oxidative damage in the Cd-toxicated soybean seedlings through hydroponic ***,the g-C_(3)N_(4)NSs dynamically regulated the root cell wall(RCW)components by increasing pectin content and modifying its demethylation via enhancing pectin methylesterase(PME)activity,therefore greatly enhanced stronger RCW-Cd retention(up to 82.8%)and reduced Cd migration to the ***,the g-C_(3)N_(4)NSs reversed the Cd-induced chlorosis,increased photosynthetic efficiency because of enhancement in F_v/F_mration,Y(Ⅱ)and sugars *** results provide new insights into the alleviation of Cd toxicity to plants by g-C_(3)N_(4)NSs,and shed light on the application of low-cost and environmental-friendly carbon-based NMs for alleviating heavy metal toxicity to plants.

关键词： Cadmium Carbon nitride nanosheets Cell wall Pectin Pectin methylesterase Soybean

具有快上转化速率的窄光谱蓝光多重共振发光材料

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Science China Materials 2024年第7期67卷 2311-2318页

作者：田杨苏蓉川刘俊杰雷搏文刘旻昊宾正杨 College of Chemistry Sichuan UniversityChengdu 610064China Department of Pharmacology North Sichuan Medical UniversityNanchong 637100China

如何提高蓝光多重共振发光材料的反隙间窜跃速率(kRISC),并维持较快的辐射跃迁速率(kR)是促进其进一步发展和应用的关键.本论文报道了一种简单且高效的“空间限制的受体-供体-受体(SCADA)”策略,旨在加速蓝色多重共振发光分子的上转化过... 详细信息

如何提高蓝光多重共振发光材料的反隙间窜跃速率(kRISC),并维持较快的辐射跃迁速率(kR)是促进其进一步发展和应用的关键.本论文报道了一种简单且高效的“空间限制的受体-供体-受体(SCADA)”策略,旨在加速蓝色多重共振发光分子的上转化过程.在多重共振中心骨架的最高占据轨道(HOMO)分布位点引入两个氰基苯受体,并在最低位占据轨道(LUMO)引入一个叔丁基咔唑给体,使发射波长蓝移的同时,减小发射的半峰宽(FWHM).此外,供体单元和受体单元呈现近距离的面对面取向,产生分子内给受体相互作用,进而增强自旋轨道耦合,加速反隙间窜跃过程.基于“SCADA”策略,本文成功开发出蓝光多重共振发光分子2DCNCz-BN,其FWHM仅为19 nm,并同时具有较快的kRISC(1.8×10^(6) s^(−1))和kR(2.0×10^(8) s^(−1)).以2DCNCz-BN为发光分子的OLED器件,最大外量子效率(EQEmax)为30.2%,并展现出较低的效率滚降,在1000 cd m^(−2)的亮度下,EQE可以维持22.3%.

关键词： multiple resonance emitter boron-nitrogen em-bedded framework fast radiative decay rate fast reverse inter-system crossing rate narrowband blue emission

胃肠微环境下吻合钉仿生表面对细菌黏附的微流场仿真

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医用生物力学 2024年第2期39卷 339-345页

作者：冯荣川胡亚辉马言张春秋刘淑红刘帮付蔚华天津理工大学天津市先进机电系统设计与智能控制重点实验室天津300384 机电工程国家级实验教学示范中心(天津理工大学) 天津300384 天津市骨植入物界面功能化与个性化研究企业重点验室天津300190 天津医科大学总医院胃肠肛肠外科天津300052

目的模拟在吻合钉植入人体以后,吻合钉表面与肠壁组织之间的微流场环境,研究其仿生疏水化表面对细胞外液流速和壁面处流体剪切力的影响,进而通过流场的变化调控细菌的黏附。方法观察鲨鱼皮肤微结构,建立细菌在微流场环境中的简化二维运... 详细信息

目的模拟在吻合钉植入人体以后,吻合钉表面与肠壁组织之间的微流场环境,研究其仿生疏水化表面对细胞外液流速和壁面处流体剪切力的影响,进而通过流场的变化调控细菌的黏附。方法观察鲨鱼皮肤微结构,建立细菌在微流场环境中的简化二维运动模型。通过计算流体动力学数值仿真,模拟静态流场和动态流场中,细菌分别在光滑表面和微织构表面的运动,比较两种表面环境下细菌周围的流场特征和流体剪切力,分析流体剪切力影响细菌黏附的内在机制。结果仿生微织构的加入增强了微流场内细胞外液的流速,在静态流场中流体对细菌的黏滞作用较小;动态流场中流体对细菌的推动作用更强;一定范围内的微坑宽度使微织构壁面所受流体剪切力更大。结论吻合钉的仿生微织构表面,加快了细胞外液的流速,提高了微织构壁面和细菌所受流体剪切力,对细菌的附着有一定影响。研究结果为吻合钉抑菌表面的研究提供了理论依据。

关键词：仿生鲨鱼皮肤结构吻合钉抑菌性细胞外液流速壁面剪切力

MoSSBAUER STUDY ON Eu-Ba-Cu OXIDE SUPERCONDUCTOR

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Chinese Physics Letters 1988年第5期5卷 213-216页

作者：刘荣川胡征金新邵惠民王桂琴赵骥夏元复 Department of Physics Nanjing UniversityNanjing

Onset of superconductivity of the new high Tc superconductor Eu-Sa-Cu-O was found to be *** valence of Eu ion and the Debye temperature of this superconductor were determined using Mössbauer *** experimental results show abnormal changes of isomer shift and lattice-softening nearby the transition temperature *** seems that high Debye temperature is not a necessary condition for this high Tc superconducting system.

关键词： spectroscopy. superconductor Debye

SLC7A11的调控机制及其在心血管疾病中的作用

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生命的化学 2024年第1期44卷 73-82页

作者：罗豪刘延旭文聪岳荣川川北医学院附属医院心血管内科南充637000

溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11/xCT)作为一种胱氨酸/谷氨酸逆向转运蛋白,参与氨基酸在质膜上的转运,调节细胞铁死亡的发生机制。近年来,越来越多的研究表明,SLC7A11与心血管系统疾病的发生、发展密切... 详细信息

溶质载体家族7成员11(solute carrier family 7 member 11,SLC7A11/xCT)作为一种胱氨酸/谷氨酸逆向转运蛋白,参与氨基酸在质膜上的转运,调节细胞铁死亡的发生机制。近年来,越来越多的研究表明,SLC7A11与心血管系统疾病的发生、发展密切相关。本文综述了SLC7A11的结构、功能、调控机制及其在心血管疾病发展中的作用机理,旨在寻找与心血管疾病防治相关的潜在靶点。

关键词：溶质载体家族7成员11 心血管疾病双硫死亡铁死亡表观遗传调控

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Y-Ba-Cu-O高Tc超导体的核技术研究

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核技术 1989年第8期12卷 533-536页

作者：刘荣川滕敏康王广厚沈德勋夏元复南京大学

本文报道用穆斯堡尔谱学和X射线衍射研究YBa_2(Cu_(1-x)Fe_x)_3O_7的结构和超导性质以及铁置换的影响;用正电子湮没技术研究Y-Ba-Cu-O高T_c超导体,发现T_c区域正电子湮没寿命谱性质异常;用质子和电子束分别对Y-Ba-Cu-O超导体的体材和不... 详细信息

本文报道用穆斯堡尔谱学和X射线衍射研究YBa_2(Cu_(1-x)Fe_x)_3O_7的结构和超导性质以及铁置换的影响;用正电子湮没技术研究Y-Ba-Cu-O高T_c超导体,发现T_c区域正电子湮没寿命谱性质异常;用质子和电子束分别对Y-Ba-Cu-O超导体的体材和不同衬底的超导薄膜进行辐照试验,获得了一些新的结果。

关键词：超导体穆斯堡尔谱正电子湮没

腰围与扩张型心肌病的因果关系:双向两样本孟德尔随机化分析

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实用心脑肺血管病杂志 2024年第7期32卷 53-57页

作者：刘宗连崔扬扬杜林芹罗豪刘延旭文聪周阳岳荣川川北医学院附属医院心血管内科四川省南充市637000 资中县人民医院心血管内科四川省内江市641000

目的基于双向两样本孟德尔随机化(MR)分析方法探讨腰围与扩张型心肌病(DCM)的因果关系。方法2023-12-20,从IEU OpenGWAS project网站获取腰围数据集和DCM数据集,其均为欧洲人群样本,其中腰围数据集的样本量为462166例、单核苷酸多态性(S... 详细信息

目的基于双向两样本孟德尔随机化(MR)分析方法探讨腰围与扩张型心肌病(DCM)的因果关系。方法2023-12-20,从IEU OpenGWAS project网站获取腰围数据集和DCM数据集,其均为欧洲人群样本,其中腰围数据集的样本量为462166例、单核苷酸多态性(SNP)数量为9851867个;DCM数据集的样本量为355381例,SNP数量为19080278个。本研究以逆方差加权法(IVW)分析结果为主,以加权中位数法(WME)、MR-Egger回归、简单模型、加权模型分析结果为补充,以SNP为工具变量,分析腰围与DCM的因果关系。使用Cochran Q检验判断SNP间是否存在统计学异质性,采用MR-Egger回归的截距项、MR-PRESSO检验分析SNP的水平多效性,使用留一法分析单个SNP对IVW分析结果的影响,绘制漏斗图以评估SNP的潜在偏倚。结果本研究最终纳入348个与腰围强相关的SNP,14个与DCM强相关的SNP。IVW分析结果显示,腰围增加是DCM的危险因素〔OR=2.046,95%CI(1.548~2.703),P0.05),但其β值与IVW的β值方向一致。IVW、WME、MR-Egger回归、简单模型、加权模型分析结果均显示,DCM与腰围无因果关系(P>0.05)。Cochran Q检验结果显示,与腰围、DCM强相关的SNP间均不存在统计学异质性(P>0.05)。MR-Egger回归的截距项、MR-PRESSO检验结果均显示,与腰围、DCM强相关的SNP均无水平多效性(P>0.05)。留一法分析结果显示,逐一剔除单个与腰围、DCM强相关的SNP后,IVW分析结果均无明显改变。漏斗图分析结果显示,与腰围、DCM强相关的SNP基本对称分布,无潜在偏倚。结论腰围增加是DCM的危险因素。

关键词：心肌病扩张型腰围孟德尔随机化因果关系

M■SSBAUER STUDY OF DISPROPORTIONATION PRODUCTS OF Fe(OH)_2 IN THE ABSENCE OF OXYGEN——THE EFFECT CAUSED BY Me^(2+) CATION ON THE EVOLUTION OF HYDROGEN

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Chinese Science Bulletin 1985年第9期30卷 1175-1180页

作者：张经坤夏元復王述新刘荣川祁守仁 Nankai University Tianjin Nanjing University Central China Teachers' College Wuhan

In regard to G. Schikorr’s reaction 3Fe（OH）2=Fe3O4+2H2O+H2, the impact of the additives on the evolution of hydrogen is important. Some additives show remarkable effect on promotion, while others show intense inhibition. From the results given in [3] it can be seen that the impact on the evolution of hydrogen differs greatly in different sugar solutions, even if the additives are of the same kind. The present paper is a continuous study on the impact of the additives after (3)G. Schrauzer believed that cations Na+, Ni2+, etc. show promotive effect, and Al3+,

关键词： additives promotion sugar remarkable passed FeOOH evolved explained intense granules

A MSSBAUER STUDY FOR ANOMALOUS PROPERTIES OF LiNbO_3 CRYSTAL NEAR 75℃

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Chinese Science Bulletin 1983年第5期28卷 604-608页

作者：夏元复许自然沈惠敏刘荣川甘肇强王业宁 Department of Physics Nanjing University Department of Physics Nanjing University? INTRODUCTION LiNbO_3 is an interesting crystal in view of its piezoelectrical electrooptical and nonlinear optical properties. It has potential applications in the laser and microwaveacoustic fields. Based on the investigations the authors held that the anomalous birefrigence behavior along C axis of LiNb O_2 near 75℃ may be attributed to the unkown phase transition instead of the cause supposed by et al. However the change of the crystal structure involved is still open.

Ⅰ. INTRODUCTION LiNbO3 is an interesting crystal in view of its piezoelectrical, electrooptical and nonlinear optical properties. It has potential applications in the laser and microwaveacoustic fields. Based on the investigations, the authors held that the anomalous birefrigence behavior along C axis of LiNb O2 near 75℃ may be attributed to the unkown phase transition instead of the cause supposed by et al. However, the change of the crystal structure involved is still open.

关键词： instead supposed attributed relaxation anomalous normalized A M fitting rotation abrupt

THE SYNTHESIS AND STRUCTURAL INVESTIGATIONS OF SOME ORGANOMETALLIC COMPLEXES WITH TIN TO RARE EARTH BOND

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Chinese Science Bulletin 1985年第12期30卷 1616-1620页

作者：王序昆周晓欣张经坤夏元复刘荣川王述新 Institute of Elementoorganic Chemistry Nankai University Tianjin Department of Physics Nanjing University Department of Physics Nanjing University Computer CenterNanjing Instritute of Posts and TelecommunieationsNanjing

Organometallic complexes having metal-metal bonds constitute a new series of compounds with specific characters in structure, bonding, and spectroscopic properties. Moreover, there has also been a growing interest in the reactivity patterns associated with these compounds. Since the seventies there have been many reports on the investigation of the synthesis and structure of complexes with tin-to-transition metal bonds,

关键词： complexes bonds bonding reactivity spectroscopic constitute singlet solubility covalent benzene