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β1-肾上腺素受体、血管紧张素Ⅱ-1型受体基因多态性与高寒地区高血压的关系研究

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中国全科医学 2020年第30期23卷 3823-3828页

作者：王晶董天崴王爽周萌吴春丽胡焱垚杨军佳木斯大学附属第一医院心内一科黑龙江省佳木斯市154007

背景高血压是最常见的慢性心血管病,也是全球疾病负担的主要原因,我国高血压发病率存在着地域差异,其中高寒地区高血压患者明显多于非高寒地区,这主要由生活环境和遗传因素决定,本文将从遗传学的角度对高血压的发病进行研究。目的探究... 详细信息

背景高血压是最常见的慢性心血管病,也是全球疾病负担的主要原因,我国高血压发病率存在着地域差异,其中高寒地区高血压患者明显多于非高寒地区,这主要由生活环境和遗传因素决定,本文将从遗传学的角度对高血压的发病进行研究。目的探究β1-肾上腺素受体(ADRB1)、血管紧张素Ⅱ-1型受体(AGTR1)基因多态性与高寒地区高血压的关系。方法选取2014年8月—2017年2月于佳木斯大学附属第一医院高血压和心内科门诊就诊及住院的符合研究标准的高血压患者1084例,其中546例进行ADRB1基因检测(记为高寒地区1组),702例进行AGTR1基因检测(记为高寒地区2组)。选取同期于本院进行体检的健康且未服用任何药物的志愿者169例(记为对照组受试者)。采用荧光染色原位杂交法检测所有受试者ADRB1、AGTR1基因型。比较高寒地区1组与对照组受试者ADRB1基因型、等位基因频率,高寒地区2组与对照组受试者AGTR1基因型、等位基因频率;并分析高寒地区高血压患者与非高寒(北京、湖南、福建)地区高血压患者及高寒地区健康人群与非高寒(北京、湖南、福建)地区高血压患者ADRB1、AGTR1基因型、等位基因频率。结果高寒地区1组与对照组受试者ADRB1基因型比较,差异无统计学意义(P>0.05);高寒地区1组与对照组受试者ADRB1等位基因频率比较,差异有统计学意义(P0.05)。高寒地区1组高血压患者与北京地区、湖南地区、福建地区高血压患者ADRB1基因型、等位基因频率比较,差异无统计学意义(P>0.05)。高寒地区2组高血压患者与北京地区高血压患者AGTR1基因型、等位基因频率比较,差异无统计学意义(P>0.05);高寒地区2组高血压患者与湖南地区、福建地区高血压患者AGTR1基因型、等位基因频率比较,差异有统计学意义(P0.05);对照组受试者与湖南、福建地区高血压患者ADRB1基因型、等位基因频率比较,差异无统计学意义(P>0.05)。对照组受试者与北京地区高血压患者AGTR1基因型、等位基因频率比较,差异无统计学意义(P>0.05);对照组受试者与湖南、福建地区高血压患者AGTR1基因型、等位基因频率比较,差异有统计学意义(P<0.05)。结论ADRB1基因C等位基因与高寒地区高血压发病相关,暂未发现AGTR1基因多态性与高寒地区高血压发病相关。

关键词：高血压 β1-肾上腺素受体血管紧张素Ⅱ-1型受体等位基因高原病

Effect of Nb-V microalloying on the hot deformation behavior of medium Mn steels

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 360-368页

作者： Yumeng Wang Qinyi Guo Bin hu Haiwen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The influence of Nb-V microalloying on the hot deformation behavior and microstructures of medium Mn steel(MMS)was investigated by uniaxial hot compression *** establishing the constitutive equations for simulating the measured flow curves,we successfully constructed deformation activation energy(Q)maps and processing maps for identifying the region of flow *** concluded the following consequences of Nb-V alloying for MMS.(i)The critical strain increases and the increment diminishes with the increasing deformation temperature,suggesting that NbC precipitates more efficiently retard dynamic recrystallization(DRX)in MMS compared with solute Nb.(ii)The deformation activation energy of MMS is significantly increased and even higher than that of some reported high Mn steels,suggesting that its ability to retard DRX is greater than that of the high Mn content.(iii)The hot workability of MMS is improved by narrowing the hot processing window for the unstable flow stress,in which fine recrystallized and coarse unrecrystallized grains are present.

关键词： medium manganese steel niobium-vanadium microalloying flow behavior dynamic recrystallization hot workability

饲粮钙水平和饲喂方式对产蛋后期蛋鸡生产性能、蛋壳质量和钙代谢的影响

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动物营养学报 2021年第9期33卷 4966-4979页

作者：张倚剑施寿荣胡艳姚宏刘良基张倩雲童海兵梁明振广西大学动物科学技术学院南宁530000 中国农业科学院家禽研究所扬州225000

本试验旨在研究一种不均衡饲喂方式对产蛋后期蛋鸡生产性能和蛋壳质量的影响,并通过检测血浆、粪便和胫骨钙含量的变化来解释该方式对蛋壳质量产生影响的原因。试验选取288只70周龄、体况健康的海兰褐蛋鸡,随机分为4个组,每组6个重复,... 详细信息

本试验旨在研究一种不均衡饲喂方式对产蛋后期蛋鸡生产性能和蛋壳质量的影响,并通过检测血浆、粪便和胫骨钙含量的变化来解释该方式对蛋壳质量产生影响的原因。试验选取288只70周龄、体况健康的海兰褐蛋鸡,随机分为4个组,每组6个重复,每个重复12只鸡。正常钙水平常规饲喂方式组(NCA组)和正常钙水平不均衡饲喂方式组(NCD组)饲喂钙含量为3.5%的正常钙水平饲粮,低钙水平常规饲喂方式组(LCA组)和低钙水平不均衡饲喂方式组(LCD组)饲喂钙含量为3.0%的低钙水平饲粮;其中,NCA组和LCA组每天08:00和14:00平均投喂全天耗料量的饲粮,NCD组和LCD组每天08:00和14:00分别投喂全天耗料总量1/3和2/3的饲粮。试验预试期1周,正试期8周。结果表明,与常规饲喂方式相比:1)不均衡饲喂方式显著降低产蛋后期蛋鸡平均日采食量和料蛋比(P0.05)。2)不均衡饲喂方式显著提高蛋壳厚度、蛋壳重量和壳重比(P<0.05)。3)不均衡饲喂方式能够显著提高蛋鸡夜间胫骨钙含量(P<0.05),并且有提高胫骨骨密度的趋势(P=0.060)。4)不均衡饲喂有降低蛋鸡粪便中钙含量的趋势(P=0.075),在蛋壳钙沉积上与饲粮钙水平存在显著交互作用(P<0.05)。由此可见,采用不均衡饲喂方式能够提高产蛋后期蛋鸡产蛋性能,降低骨钙动员,并且通过提高蛋鸡夜间对饲粮中钙的利用来促进蛋壳钙沉积,改善蛋壳质量。

关键词：产蛋后期生产性能蛋壳质量不均衡饲喂

混合体系:一种改善水系钾离子全电池能量密度和稳定性的有效方式

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Science China Materials 2023年第3期66卷 923-931页

作者：于伟健盖军民胡艳瑶沈东阳罗文迪陈素华武利琛刘朝孟周江杨红官鲁兵安 School of Physics and Electronics Hunan UniversityChangsha 410082China School of Physics and Electronics Henan UniversityKaifeng 475004China School of Metallurgy Northeastern UniversityShenyang 110819China School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan provinceCentral South UniversityChangsha 410083China State Key Laboratory of Advanced and Manufacturing for Vehicle Body Hunan UniversityChangsha 410082China

水系钾基电池(APBs)因具有高安全性和环境友好的性质而被广泛研究.然而,由于电极材料和工作机制的限制,APBs在倍率性能和能量密度方面需要进一步提高,以满足发展需求.针对上述问题,我们首次成功设计并组装了以Z n金属作为阳极,K1.9 2C u... 详细信息

水系钾基电池(APBs)因具有高安全性和环境友好的性质而被广泛研究.然而,由于电极材料和工作机制的限制,APBs在倍率性能和能量密度方面需要进一步提高,以满足发展需求.针对上述问题,我们首次成功设计并组装了以Z n金属作为阳极,K1.9 2C u0.6 2M n0.3 8-[Fe(CN)6]0.968·□0.0 3 2·H_(2)O0.35作为阴极,2 mol L-1Zn(SO_(3)CF3)2+12 mol L-1KSO_(3)CF3作为电解液的水系钾基电池.这种混合离子体系的设计优点是:(i)选择金属锌作为阳极,提高了APBs的工作电位;(ii)双阳离子储存机制缩短了离子传输路径;(ⅲ)来自双阳离子电解质的K+通过静电屏蔽作用抑制了锌枝晶的生长.因此,组装后的全电池具有1.75 V的高工作电位,并具有优异的倍率性能(在10,000 mA g-1的电流密度下,保持原有容量的83.3%).此外,通过理论相场模拟和综合表征充分揭示了原位静电屏蔽效应,显著抑制了锌阳极的枝晶生长,提高了全电池稳定性.混合离子电池的结构设计为高性能APBs的发展提供了思路.

关键词：工作电位全电池倍率性能锌阳极离子电池能量密度静电屏蔽结构设计

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu Zhang Aihua Yuan hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

Photo‑Energized MoS_(2)/CNT Cathode for High‑Performance Li–CO_(2)Batteries in a Wide‑Temperature Range

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Nano-Micro Letters 2025年第1期17卷 160-175页

作者： Tingsong hu Wenyi Lian Kang hu Qiuju Li Xueliang Cui Tengyu Yao Laifa Shen Jiangsu Key Laboratory of Materials and Technologies for Energy Storage College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Li–CO_(2) batteries are considered promising energy storage systems in extreme environments such as Mars;however,severe performance degradation will occur at a subzero temperature owning to the sluggish reaction ***,a photo-energized strategy adopting sustainable solar energy in wide working temperature range Li–CO_(2) battery was achieved with a binder-free MoS_(2)/carbon nanotube(CNT)photo-electrode as *** unique layered structure and excellent photoelectric properties of MoS_(2) facilitate the abundant generation and rapid transfer of photo-excited carriers,which accelerate the CO_(2) reduction and Li_(2)CO_(3) decomposition upon *** illuminated battery at room temperature exhibited high discharge voltage of 2.95 V and mitigated charge voltage of 3.27 V,attaining superior energy efficiency of 90.2%and excellent cycling stability of over 120 *** at an extremely low temperature of−30℃,the battery with same electrolyte can still deliver a small polarization of 0.45 V by the photoelectric and photothermal synergistic mechanism of MoS_(2)/CNT *** work demonstrates the promising potential of the photo-energized wide working temperature range Li–CO_(2) battery in addressing the obstacle of charge overpotential and energy efficiency.

关键词： Li-CO_(2)batteries Photo-energized Wide operation-temperature Kinetics MoS_(2)

Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu Xiao Wei Xiao Di hu Guoxiong Wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

A Novel Model for Describing Rail Weld Irregularities and Predicting Wheel-Rail Forces Using a Machine Learning Approach

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 555-577页

作者： Linlin Sun Zihui Wang Shukun Cui Ziquan Yan Weiping hu Qingchun Meng State Key Laboratory of High-Speed Railway Track System China Academy of Railway Sciences Corporation LimitedBeijing100081China Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing100081China School of Aeronautic Science and Engineering Beihang UniversityBeijing100191China

Rail weld irregularities are one of the primary excitation sources for vehicle-track interaction dynamics in modern high-speed *** can cause significant wheel-rail dynamic interactions,leading to wheel-rail noise,component damage,and *** researchers have employed the vehicle-track interaction dynamic model to study the dynamic interactions between wheel and rail induced by rail weld geometry ***,the cosine wave model used to simulate rail weld irregularities mainly focuses on the maximum value and neglects the geometric *** this study,novel theoretical models were developed for three categories of rail weld irregularities,based on measurements of the high-speed railway from Beijing to *** vertical dynamic forces in the time and frequency domains were compared under different running *** forces generated by the rail weld irregularities that were measured and modeled,respectively,were compared to validate the accuracy of the proposed ***,based on the numerical study,the impact force due to rail weld irrregularity is modeled using an Artificial Neural Network(ANN),and the optimum combination of parameters for this model is *** results showed that the proposed model provided a more accurate wheel/rail dynamic evaluation caused by rail weld irregularities than that established in the *** ANN model used in this paper can effectively predict the impact force due to rail weld irrregularity while reducing the computation time.

关键词： Rail weld irregularity high-speed railway vehicle-track coupled dynamics wheel/rail dynamic vertical force artificial neural networks

Spin-glass behavior in the competing CoCrGaO_(4)cubic spinel system

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Nano Research 2025年第1期18卷 501-507页

作者： Jiyu hu Jiangli Ni Zhenfa Zi Chaocheng Liu School of Physics and Materials Engineering Hefei Normal UniversityHefei 230009China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026China

Spin glasses(SGs),generally defined as disordered systems with randomized competing interactions,are widely investigated complex *** the ground states of spin glasses is crucial for understanding the nature of disordered magnets and many other physical manifestations,while also helping to solve some hard combinatorial optimization problems across multiple ***,the intrinsic cause of SG has always been elusive,especially in spinel oxide ***,we report the SG behavior observed in the cubic spinel oxides CoCrGaO_(4),and provide a comprehensive understanding of its intrinsic *** results indicate a frustrated state under multi-magnetic competition,and the features of SG are confirmed by susceptibility *** fitting parameters ofτ0,T0,and zv of isothermal remanent magnetization further reveal the relaxation behavior and strong spin ***,the varying exchange coupling under different temperatures and magnetic fields is unveiled,which should be responsible for the disordered *** studies unravel the underlying mechanism responsible for doping-induced magnetic frustration and introduce CoCrGaO_(4)as a potential platform for investigating spin glass behavior,thereby advancing fundamental research on frustrated magnetism within the spinel system.

关键词： spin glass(SG) magnetic frustration magnetic competition spinel ferrites