检索结果-南通市图书馆

Porousβ-FeOOH nanotube stabilizing Au single atom for highefficiency nitrogen fixation

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第4期15卷 3026-3033页

作者： Hao Sun Hua-Qing Yin Wenxiong Shi Lu-Lu Yang xiang-Wei Guo Hong Lin Jiangwei Zhang Tong-Bu Lu Zhi-ming Zhang Institute for New Energy Materials&Low Carbon Technologies School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Dalian National Laboratory for Clean Energy&State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences(CAS)Dalian 116023China

Electrochemical nitrogen reduction reaction(NRR)under ambient conditions is highly desirable to achieve sustainable ammonia(NH3)production via an alternative carbon free ***-atom catalysts(SACs)with super high atomic utilization and catalytic efficiency exhibit great potential for ***,a high-performance NRR SAC is facilely prepared via a simple deposition method to anchor Au single atoms onto porousβ-FeOOH *** resulting Au-SA/FeOOH can efficiently drive NRR under ambient conditions,and the NH3 yield reaches as high as 2,860μg·h^(-1)·mg_(Au)^(-1)at-0.4 V *** hydrogen electrode(RHE)with 14.2%faradaic efficiency,much superior to those of all the reported Au-based *** investigations demonstrate that the synergy of much enhanced N_(2)adsorption,directional electron export,and mass transfer ability in Au-SA/FeOOH greatly contributes to the superior NRR *** work highlights a new insight into the design of high efficient NRR electrocatalysts by combination of porous metal oxide matrix and highly active single-atom sites.

关键词： dinitrogen(N_(2))reduction electrocatalysis single atom porous iron oxyhydroxide

Evaporative Cooling Applied in Thermal Power Plants:A Review of the State-ofthe-Art and Typical Case Studies

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fluid Dynamics & Materials Processing 2023年第9期19卷 2229-2265页

作者： Tiantian Liu Huimin Pang Suoying He Bin Zhao Zhiyu Zhang Jucheng Wang Zhilan Liu xiang Huang Yuetao Shi ming Gao Shandong Engineering Laboratory for High-Efficiency Energy Conservation and Energy Storage Technology&Equipment School of Energy and Power EngineeringShandong UniversityJinan250061China College of Energy and Power Engineering Changsha University of Science&TechnologyChangsha410114China Technical Research and Development Department Shandong Taiwang Cooling Equipment Co.Ltd.Xintai271221China Shandong Key Laboratory of Key Technology of Tire Mould Himile Mechanical Science and Technology(Shandong)Co.Ltd.Weifang261550China School of Urban Planning and Municipal Engineering Xi’an Polytechnic UniversityXi’an710048China

A review is conducted about the application of the evaporative cooling technology in thermal power *** case studies are considered,namely,evaporative air conditioners,evaporative cooling in direct air-cooled systems,gas turbine inlet cooling,wet cooling towers,and hybrid cooling towers with a crosswind *** effort is provided to describe the advantages related to direct evaporative cooling when it is applied in thermal power plants and illustrate the research gaps,which have not been filled *** particular,typical case studies are intentionally used to compare the cooling performances when direct evaporative cooling is implemented in different types of cooling towers,including the natural draft wet cooling tower(NDWCT)and the pre-cooled natural draft dry cooling tower(NDDCT).It is shown that the NDWCT provides the best cooling performance in terms of power station cooling,followed by the pre-cooled NDDCT,and the NDDCT;moreover,the evaporative pre-cooling is able to enhance the cooling performance of ***,on a yearly basis,better NDDCT cooling performances can be obtained by means of a spray-based pre-cooling approach with respect to wet media ***,the use of nozzle spray is suggested for improvement in the performance of indirect/direct air-cooling systems with controlled water consumption.

关键词： Direct evaporative cooling cooling tower cooling performance wet media nozzle spray thermal power plants

强直性脊柱炎患者H3K27me3表达水平及其调控Th17细胞分化的表观遗传机制

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

四川大学学报（医学版） 2024年第3期55卷 744-748页

作者：程明贾龙薛志远杨涛周雪赵冠兰成都市金牛区人民医院康复科成都610036 四川省医学科学院•四川省人民医院骨科成都610072

目的探讨强直性脊柱炎(ankylosing spondylitis, AS)中组蛋白H3K27me3甲基化及其调节酶JMJD3和EZH2在Th17细胞分化中的作用,以揭示其在AS发病机制中的潜在作用。通过分析H3K27me3的甲基化状态及其与Th17相关因子之间的相互作用,为AS的... 详细信息

目的探讨强直性脊柱炎(ankylosing spondylitis, AS)中组蛋白H3K27me3甲基化及其调节酶JMJD3和EZH2在Th17细胞分化中的作用,以揭示其在AS发病机制中的潜在作用。通过分析H3K27me3的甲基化状态及其与Th17相关因子之间的相互作用,为AS的临床治疗提供新的策略和靶点。方法采集84名AS的患者(活跃期、稳定期各42例)和84名健康志愿者(对照组)血液样本,ELISA检测Th17细胞及相关细胞因子(IL-21、IL-22和IL-17),RT-PCR分析Th分化关键信号通路RORc、JAK2、STAT3基因的表达,蛋白质印迹法检测RORc、JAK2/STAT3通路蛋白、H3K27me3及相关蛋白酶EZH2、JMJD3的表达。对活动期AS患者H3K27me3、EZH2、JMJD3与Th分化关键信号通路分子的关联性进行Pearson相关分析。结果 RORc、JAK2、STAT3 mRNA表达,活动期组>稳定期组,差异有统计学意义(Pme3、EZH2的表达量,活动期组稳定期组>对照组,差异有统计学意义(Pme3与RORc、JAK2、STAT3、IL-17负相关,JMJD3与JAK2、STAT3、IL-17正相关,而EZH2与JAK2、STAT3、IL-17负相关(Pme3的低表达受到基因位点JMJD3和EZH2的影响,可以调节Th17细胞的分化,从而在AS的发病和进展中发挥作用。

关键词：强直性脊柱炎 H3K27me3 Th17细胞分化表观遗传调控

A study on the dynamic spectral indices for SEP events on 2000 July 14 and 2005 January 20

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2020年第3期20卷 129-135页

作者： ming-Xian Zhao Gui-ming Le Key Laboratory of Space Weather National Center for Space WeatherChina Meteorological Administration.Beijing 100081China

We have studied the dynamic proton spectra for the two solar energetic particle(SEP)events on2000 July 14(hereafter GLE59)and 2005 January 20(hereafter GLE69).The source locations of GLE59 and GLE69 are N22 W07 and N12 W58 *** fluxes>30 me V have been used to compute the dynamic spectral indices of the two SEP *** results show that spectral indices of the two SEP events increased more swiftly at early times,suggesting that the proton fluxes>30 me V might be accelerated particularly by the concurrent flares at early times for the two SEP *** the GLE69 with source location at N12 W58,both flare site and shock nose are well connected with the Earth at the earliest ***,only the particles accelerated by the shock driven by eastern flank of the Cme can propagate along the interplanetary magnetic field line to the Earth after the *** the GLE59 with source location at N22 W07,only the particles accelerated by the shock driven by western flank of the associated Cme can reach the Earth after the *** results also show that there was slightly more than one hour during which the proton spectra for GLE69 are softer than that for GLE59 after the flares,suggesting that the shock driven by eastern flank of the Cme associated with GLE69 is weaker than the shock driven by the western flank of the Cme associated with *** results support that quasi-perpendicular shock has stronger potential in accelerating particles than the quasi-parallel *** results also suggest that only a small part of the shock driven by western flank of the Cme associated with the GLE59 is quasi-perpendicular.

关键词： Sun:flares-Sun coronal mass ejections(Cmes)-Sun particle emission-Sun solarterrestrial relations

PID1,a new tumor-promoting gene in insulin resistance mediated acceleration of hepatocellular carcinoma development and progression

在线全文

学校读者我要写书评

暂无评论

中国药理学与毒理学杂志 2017年第10期31卷 977-978页

作者： ming xiang Qian-qian XU Na XU Zhong-shi ZHOU Ya-li TUO Cheng TIAN Department of Pharmacology School of PharmacyTongji Medical CollegeHuazhong University of Science and Technology

OBJECTIVE To investigate the effect of phosphotyrosine interaction domain containing 1(PID1,NYGGF4)on promotion of IR and HCC,and explore its underlying *** Lentivirus were used to mediate the knockdown of PID1 in HFD induced IR mouse model as well as ob/ob *** glucose and insulin tolerance were performed 4 weeks after lentivirus ***-based transfection was applied to inducethe liver specific overexpression of *** cytometry was exerted to detect the proportion and function of immune *** T-PCR and Western blot were used to detect the expression of downstream pathways of *** was used to determine the receptor of *** immunoprecipitation(ChI P)was operated to measure the modification of H3K4me3 of PID1 *** PID1 restriction improved insulin resistance,hyperglycemia and fatty ***,hepatic knockdown of PID1 attenuated liver xenografted tumor ***,PID1 liver-specific protooncogenes via hydrodynamics-based transfection established a primary hepatocellular carcinoma mouse model,induced an immunosuppressive environment,with the reduction of CD3^+,CD4^+,CD8^+T cel s,retarded maturation of dendritic cel s(DCs),pronounced differentiation of regulatory T cells(Tregs),and recruitment of *** addition,PID1 overexpression activated proliferation related genes,promoted anti-inflammatory genes,suppressed pro-inflammatory genes,induced glycolysis and lipid metabolism genes to facilitate tumorigenesis in ***,PID1 exerted its tumor-promoting function through binding to epidermal growth factor receptor(EGFR)and activation of downstream MAPK *** such,PID1 exist trimethylation of histone H3 at lysine 4(H3K4me3)modification and IR up-regulated the expression of PID1 by activation the H3K4me3 *** PID1 is a new gene that exerts both liver cancer-promoting and insulin resistance inducing *** accelerates liver cancer

关键词： PID1 insulin resistance hepatocellular carcinoma cancer promoting immunosuppression

Systematic adsorption process of petroleum hydrocarbon by immobilised petroleum-degradation bacteria system in degradation pathways

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2021年第5期18卷 1543-1550页

作者： Xin-Ge Fu Ke Shi Jian-Liang Xue Chuan Chen Yu Bai Yan-Lu Qiao Yi-Xuan Liu xiang-ming Hu Yu Gao Hao Yu College of Safety and Environmental Engineering Shandong University of Science and TechnologyQingdaoShandong266590China School of Environment Harbin Institute of TechnologyHaerbinHeilongjiang150001China Chinaunicom System Integration Co LtdNo.131Xidan North RoadBeijing100085China College of Chemical and Biological Engineering Shandong University of Science and TechnologyQingdaoShandong266590China

In order to effectively control petroleum hydrocarbon pollution by immobilisation technology,it is necessary to understanding the degradation pathways of petroleum hydrocarbon in immobilised petroleum-degradation bacteria ***,the adsorption in degradation process is rarely *** this study,adsorption process of petroleum hydrocarbon was synergistically studied by means of the surface properties,adsorption thermodynamics and molecular *** results indicate that the immobilised petroleum-degradation bacteria have many holes for the bacteria to *** diesel adsorption by immobilised petroleum-degradation bacteria is a spontaneous,entropy-increasing and endothermic *** is first adsorbed to the surface of immobilised petroleum-degradation bacteria through hydrogen bonding,and then is *** study provided substantial knowledge of immobilised technology in controlling petroleum hydrocarbon pollution.

关键词： Petroleum hydrocarbon pollution Immobilisation Adsorption-biodegradation Molecular simulation Bioremediation

基于QMD-HBi GRU的短期光伏功率预测方法

在线全文

学校读者我要写书评

暂无评论

高电压技术 2024年第9期50卷 3850-3859,I0002-I0005页

作者：吉兴全赵国航叶平峰孟祥剑杨明张玉敏山东科技大学电气与自动化工程学院青岛266590 山东科技大学储能技术学院青岛266590 山东大学电网智能化调度与控制教育部重点实验室济南250061

为了解决光伏功率数据固有的强不确定性导致单一预测模型预测精度不高的问题,提出一种基于二次模态分解和混合双向门控循环单元模型(hybrid bi-directional gated recurrent unit, HBiGRU)的短期光伏功率预测方法。首先,为应对光伏功率... 详细信息

为了解决光伏功率数据固有的强不确定性导致单一预测模型预测精度不高的问题,提出一种基于二次模态分解和混合双向门控循环单元模型(hybrid bi-directional gated recurrent unit, HBiGRU)的短期光伏功率预测方法。首先,为应对光伏功率数据的不确定性,基于自适应噪声完备集合经验模态分解、样本熵和变分模态分解对光伏功率数据进行处理,得到一系列较为平稳的本征模函数分量;其次,构建HBi GRU模型以充分挖掘各分量与光伏功率影响因素之间的特征关系,得到各分量预测结果;最后,将各分量预测结果叠加得到短期光伏功率预测结果。以澳大利亚某地光伏电站数据进行测试,仿真结果表明:所提集成预测模型能够有效提高短期光伏功率预测精度,与其他预测模型相比,其归一化平均绝对误差和均方根误差分别降低了3.21%和5.04%,决定系数提高了22.7%。

关键词：短期光伏功率预测混合双向门控循环单元自适应噪声完备集合经验模态分解变分模态分解二次模态分解深度学习

基于碳势-能源价格双响应的综合能源系统低碳经济调度

同方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

电力系统自动化 2024年第9期48卷 21-33页

作者：张玉敏孙鹏凯孟祥剑吉兴全杨明李晓宇山东科技大学电气与自动化工程学院山东省青岛市266590 电网智能化调度与控制教育部重点实验室(山东大学) 山东省济南市250061

利用电-气-热多元负荷节点碳势引导需求响应是实现综合能源系统(IES)低碳运行的有效手段。IES中多能流耦合关系复杂、动态特性交织,碳排放特性难以准确表达。文中针对IES中低碳运行潜力挖掘不足的问题进行了研究,提出了一种基于节点碳势... 详细信息

利用电-气-热多元负荷节点碳势引导需求响应是实现综合能源系统(IES)低碳运行的有效手段。IES中多能流耦合关系复杂、动态特性交织,碳排放特性难以准确表达。文中针对IES中低碳运行潜力挖掘不足的问题进行了研究,提出了一种基于节点碳势-能源价格双响应的经济调度方法,用于IES源-荷协同,实现低碳运行。一方面,通过剖析气、热动态特性对碳排放流的影响机理,引入动态特性等价替换思想,得出计及动态特性的碳排放流模型,进而得到负荷节点的碳势,实现碳排放责任的分摊;另一方面,从碳视角出发,考虑多元负荷的碳排放责任,设计了基于多元负荷节点碳势-能源价格双响应的IES源-荷低碳互动机制,充分挖掘IES中多元负荷的低碳潜力。通过对IES中碳排放产生、传输、消费全过程的追踪与计量,制定兼顾经济性与低碳性的调控策略。以电网14节点-热网6节点-天然气网6节点(E14-H6-G6)和E57-H12-G12测试系统为例,验证了所提模型和方法的有效性。

关键词：综合能源系统低碳经济调度碳排放流碳势能源价格动态特性

新能源汽车非排放产物生成规律及其对隧道需风量的影响研究

在线全文

学校读者我要写书评

暂无评论

现代隧道技术 2024年第4期61卷 41-50页

作者：刘媛于丽王雪郭晓晗路明西南交通大学土木工程学院成都610031 西南交通大学交通隧道工程教育部重点实验室成都610031 西南交通大学极端环境岩土和隧道工程智能建养全国重点实验室成都610031

随着我国新能源汽车的推广使用,隧道中的污染物组成比例发生变化。为明确新能源汽车对隧道需风量的影响,采用资料调研、理论分析等方法,量化新能源汽车的污染物生成特性及与内燃机汽车的区别,探明在坡度与车速影响下大、中、小型3类车... 详细信息

随着我国新能源汽车的推广使用,隧道中的污染物组成比例发生变化。为明确新能源汽车对隧道需风量的影响,采用资料调研、理论分析等方法,量化新能源汽车的污染物生成特性及与内燃机汽车的区别,探明在坡度与车速影响下大、中、小型3类车型的新能源汽车在不同混入比情况下对隧道运营阶段需风量的影响规律,对《PIARC2019》隧道需风量计算公式进行修正,给出修正系数的计算方法,并根据工程情况给出详细的通风设计方法。研究结果为:(1)基于4种生成途径下非排放类污染物PM生成机理,给出了非排放类污染物PM生成量与汽车重量之间关系的计算公式;(2)大型、中型和小型新能源汽车的非排放颗粒基准排放量修正因子分别为1.127、1.093和1.088;(3)考虑隧道坡度、车速、混入比影响,给出了临时施工运输隧道与普通公路隧道的运营通风需风量修正系数计算方法;(4)建立了运营通风需风量计算时不修正、修正、宜设置除尘机3个层次的适用条件判别公式。

关键词：公路隧道新能源汽车非排放类污染物需风量通风方案修正系数