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化工技术与开发 2020年第11期49卷 72-75页

作者：胡春荣康少华王一程马震宇柏义鸣胡永宏张超陈振军广西石化公司广西钦州535000

对几种大型炼油加氢装置的往复式压缩机的控制方案进行分析,对比同类装置的运行控制情况,再针对不同级数的压缩机控制方案,分析无级调节和级间返回控制的综合应用,在节能降耗方面进行分析优化,以期总结出一种更优的控制方案。

关键词：往复式压缩机惯性力无级调节级间返回选择控制

NiS_(2)/多孔碳纤维复合电极的制备及其储锂性能

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功能材料 2024年第2期55卷 2168-2173页

作者：王金凯王征宇张佳乐刘智孟晓曼王争东王红康西安建筑科技大学机电工程学院西安710055 西安交通大学电气工程学院西安710049

制备长循环稳定、高容量的负极材料是锂离子电池实现大规模储能应用的前提之一。利用静电纺丝技术和水热硫化的方法制备了均匀分布的NiS_(2)/碳纳米纤维(NiS_(2)/C)复合材料。作为锂离子电池负极材料,NiS_(2)/C电极的首次放电比容量为86... 详细信息

制备长循环稳定、高容量的负极材料是锂离子电池实现大规模储能应用的前提之一。利用静电纺丝技术和水热硫化的方法制备了均匀分布的NiS_(2)/碳纳米纤维(NiS_(2)/C)复合材料。作为锂离子电池负极材料,NiS_(2)/C电极的首次放电比容量为864.6 mah/g,首次库仑效率为62.7%。其中不可逆容量为322.9 mah/g,不可逆容量主要由转换反应的部分不可逆及固态电解质(SEI)膜的形成造成的。NiS_(2)/C复合电极表现出优异的循环稳定性,200 ma/g下150次循环后容量仍然维持在519 mah/g,容量保持率高达90.4%。此外,在2 A/g大电流密度下,NiS_(2)/C电极的容量仍高于310 mah/g表现出出色的倍率性能。借助XRD、SEM及TEM表征,分析发现包裹着NiS_(2)纳米颗粒的碳纤维,作为良好的导电介质,既可以提高NiS_(2)的导电性,也可缓解NiS_(2)脱嵌过程中的体积膨胀,使得NiS_(2)/C电极仍能保持自身的空间结构,有助于提高电池循环性能;另一方面,碳纤维的多孔结构为锂离子提供了通道,缩短了锂离子的传输路径,提高了锂离子输运速率,有利于电池倍率性能。

关键词：碳纳米纤维 NiS_(2) 静电纺丝锂离子电池负极电化学性能

Preparation and Thermal Shock Resistance of Mullite Ceramics for High Temperature Solar Thermal Storage

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Journal of Wuhan University of Technology(materials Science) 2023年第4期38卷 743-752页

作者：吴建锋章真宇 XU Xiaohong ma Sitong LI Peixian SHI Xingxing State Key Laboratory of Silicate materials for Architectures Wuhan University of TechnologyWuhan430070China

Mullite thermal storage ceramics were prepared by low-cost calcined bauxite and *** phase composition,microstructure,high temperature resistance and thermophysical properties were characterized by modern testing *** experimental results indicate that sample A3(bauxite/kaolin ratio of 5:5)sintered at 1620℃has the optimum comprehensive properties,with bulk density of 2.83 g·cm^(-3)and bending strength of 155.44 *** 30 thermal shocks(1000℃-room temperature,air cooling),the bending strength of sample A3 increases to 166.15 MPa with an enhancement rate of 6.89%,the corresponding thermal conductivity and specific heat capacity are 3.54 W·(m·K)^(-1)and 1.39 kJ·(kg·K)^(-1)at 800℃,and the thermal storage density is 1096 kJ·kg^(-1)(25-800 mullite ceramics;sintering properties;high-temperature thermal storage;thermal shock resistance).Mullite forms a dense and continuous interlaced network microstructure,which endows the samples high thermal storage density and high bending strength,but the decrease of bauxite/kaolin ratio leads to the decrease of mullite content,which reduces the properties of the samples.

关键词： mullite ceramics sintering properties high-temperature thermal storage thermal shock resistance

Core-shell Prussian blue analogues derived from metal-organic frameworks as efficient electrocatalysts for oxygen evolution reaction

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Nano Research 2023年第3期16卷 3695-3702页

作者： Qing Zhang Hongyan Wang Wenjie Han Lin Yang Yan Zhang zhengyu Bai Collaborative Innovation Center of Henan Province for Green manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China

Developing high-performance and low-cost electrocatalysts for oxygen evolution reaction(OER)is still a great challenge for water-splitting ***,an innovative metal-organic frameworks(MOFs)hybrid-assisted strategy is reported to synthesize core-shell Co/Mn-ZIF@Fe-Co-Mn Prussian blue analogues(PBAs)toward highly efficient OER electrocatalysts in alkaline *** characterization indicates that the amorphous hydroxide transformed from Co/Mn-ZIF@Fe-Co-Mn PBA(ZIF:zeolitic imidazolate frameworks)during the electrochemical process acted as the electroactive *** from these structural and compositional features,the developed composite delivers a remarkably low overpotential of 270 mV with a current density of 10 ma·cm^(−2)in 1.0 M KOH ***,water splitting is catalyzed to reach a current density of 10 ma·cm^(−2)at 1.62 V.

关键词： core-shell structure metal-organic framework Prussian blue analogues amorphous hydroxide oxygen evolution reaction

In-situ growth of CoNi bimetal anchored on carbon nanoparticle/nanotube hybrid for boosting rechargeable Zn-air battery

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Journal of Energy Chemistry 2022年第3期31卷 348-355,I0010页

作者： Jun Li Yongxia Wang zhengyu Yin Rui He Yihao Wang Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Exploring highly efficient non-precious metal based catalysts for bifunctional oxygen electrode is crucial for rechargeable metal-air *** this study,with MOFs as precursors,a facile coprecipitation method is designed to realize in-situ growth of the CoNi anchored carbon nanoparticle/nanotube(CoNi/N-CNN)hybrid,which can achieve the simultaneous maximum exposure of both oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)active *** from the unique structure,the CoNi/N-CNN catalyst exhibits excellent electrocatalytic performance for ORR(E_(onset)=1.183 V,E_(1/2)=0.819 V)and a low operating voltage of 1.718 V at 10 ma cm^(−2)(Ej=10)for ***,the home-made rechargeable Zn-air battery with CoNi/N-CNN delivers a high discharge power density up to 209 mW cm^(−2),and an outstanding charge–discharge cycling *** boosted bifunctional electrocatalytic activity can be ascribed to the strong coupling effect between Co/Ni center sites and defect-rich N-anchored carbon featured with porous and nanotube structure,which can introduce uniformly dispersed active sites,tailored electronic configuration,superb conductivity and convenient charge transfer *** hybrid non-precious bimetal based electrocatalyst provides the possibility to develop the low-cost and high-efficient ORR/OER bifunctional electrocatalysts in rechargeable metal-air battery.

关键词： Co Ni/N-CNN Bifunctional electrocatalyst Oxygen electrode Rechargeable Zn-air battery

Diagenetic and Mineralization Age of the Hehuaping Tin-polymetallic Orefield,Hunan Province

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Acta Geologica Sinica(English Edition) 2007年第2期81卷 244-252页

作者： WEI Daofang BAO zhengyu FU Jianming CAI Minghai State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan Hubei 430074 Key Laboratory of Biogeology and Environmental Geology of Ministry of Education China University of Geosciences Wuhan Hubei 430074 Yichang Institute of Geology and Mineral Resources CGS Yichang Hubei 443003

The Hehuaping tin deposit is a large deposit found in recent years during geological surveys. The discovered tin deposit includes not only rock-alteration type deposits in fault zones, but also deposits developed in interstratified rupture zones between Devonian carbonate rocks （Qiziqiao Formation） and sandstone （Tiaomajian Formation）. The finding of tin deposits of the latter type has greatly enriched tin-mineralization types in the famous Nanling polymetallic metallogenetic region and may provide us with a new potential orientation for prospecting of tin deposits in the region. It is commonly believed that the forming of the tin deposits in the Nanling region should be related to the Yanshanian instead of Indosinian granitic magmatism. Systematical zircon U-Pb SHRIMP dating in this paper shows that tin mineralizations have endured at least two stages. The early stage should be related to the intrusion of the main body of the Wangxianling granite, which was emplaced during the Indosinian period with a diagenetic and minerafized age of 224.0±1.9 ma （MSWD=0.54）, and the late stage should be related to the intrusion of Yanshaulan granitic porphyry that took place after 142±3 ma （MSWD=0.5）.

关键词： Hehuaping orefield Zircon U-Pb SHRIMP dating Triassic Jurassic Hunan

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兽用中草药复方参麻散安全性研究

中兽医医药杂志 2017年第6期36卷 43-45页

作者：刘晓东孟冬霞武果桃马政禹任杰孟帆卫顺生赵娟张建丽王毅夏艳婷山西省武乡县畜牧综合执法大队山西武乡046300 山西省农业科学院畜牧兽医研究所山西太原030032 山西农业大学山西太谷030800

研究复方参麻散在临床应用中的安全性。选取148只小白鼠,灌胃给药进行急性毒性及蓄积性毒性试验。急性毒性试验采用简化寇式法测定半数致死量(LD_(50)),结果给药量即使达到小白鼠最大生理承受能力,仍未测出其LD_(50),说明LD_(50)>60 g/k... 详细信息

研究复方参麻散在临床应用中的安全性。选取148只小白鼠,灌胃给药进行急性毒性及蓄积性毒性试验。急性毒性试验采用简化寇式法测定半数致死量(LD_(50)),结果给药量即使达到小白鼠最大生理承受能力,仍未测出其LD_(50),说明LD_(50)>60 g/kg。最大给药量试验采用16 h 4次给药法,每次1 g/20 g,总剂量200 g/kg,以临床治疗量(1.2 g/kg)的166.7倍进行灌胃给药时,小白鼠无死亡,未见毒性反应,表明该药安全无毒、耐受性较高;采用递增法灌胃给药进行蓄积性毒性试验,以蓄积系数评价蓄积毒性,并测定比较试验组与对照组血液生化指标、体质量、脏器系数变化,肉眼观察各脏器(心、肝、脾、肺、肾)颜色、形态等组织病变,结果试验组所有小白鼠全部健活,且生长良好,呼吸、活动、饮食和排便均正常,口、鼻、眼均无异常分泌物。对照组与试验组血液生化指标及体质量、脏器系数差异不显著(P>0.05),且心、肝、脾、肺、肾、胃和肠的形态、颜色、质地均未见异常。蓄积系数K>5,属弱蓄积性或基本无蓄积性,表明复方参麻散不易发生蓄积中毒,临床应用安全。

关键词：复方参麻散小白鼠安全性

Stretchable and self-healable hydrogel artificial skin

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National Science Review 2022年第7期9卷 43-55页

作者： Bin Xue Hui Sheng Yongqiang Li Lan Li Weishuai Di zhengyu Xu Linjie ma Xin Wang Haoting Jiang Meng Qin Zhibo Yan Qing Jiang Jun-Ming Liu Wei Wang Yi Cao National Laboratory of Solid State Microstructures Department of Physics Nanjing University State Key Laboratory of Pharmaceutical Biotechnology Department of Sports Medicine and Adult Reconstructive Surgery Drum Tower Hospital Affiliated to Medical School of Nanjing University Institute for Brain Sciences Nanjing University Chemistry and Biomedicine Innovation Center Nanjing University

Hydrogels have emerged as promising materials for the construction of skin-like mechanical *** common design of hydrogel-based artificial skin requires a dielectric sandwiched between two hydrogel layers for capacitive ***,such a planar configuration limits the sensitivity,stretchability and self-healing ***,we report the design of single-layer composite hydrogels with bulk capacitive junctions as mechanical *** engineer dielectric peptide-coated graphene(PCG) to serve as homogenously dispersed electric double layers in *** mechanical motions that alter the microscopic distributions of PCG in the hydrogels can significantly change the overall *** use peptide self-assembly to render strong yet dynamic interfacial interactions between the hydrogel network and *** resulting hydrogels can be stretched up to 77 times their original length and self-heal in a few *** devices can effectively sense strain and pressure in both air and aqueous environments,providing tremendous opportunities for next-generation iontronics.

关键词： hydrogel capacitive sensor stretchability self-healing self-assembly

颈动脉支架置入术后闭塞行复合手术再通的疗效及安全性分析

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中国脑血管病杂志 2024年第8期21卷 505-513页

作者：王正宇卢光东王韬许文龙陆夏陈飞杨斌高鹏王亚冰谌燕飞马妍焦力群首都医科大学宣武医院神经外科首都医科大学宣武医院神经内科

目的探讨颈动脉支架置入术后闭塞行复合手术再通治疗的效果及安全性。方法回顾性连续纳入2016年6月至2023年4月首都医科大学宣武医院神经外科脑血运重建中心17例颈动脉支架置入术后闭塞行复合手术再通治疗患者的病历资料，根据是否再... 详细信息

目的探讨颈动脉支架置入术后闭塞行复合手术再通治疗的效果及安全性。方法回顾性连续纳入2016年6月至2023年4月首都医科大学宣武医院神经外科脑血运重建中心17例颈动脉支架置入术后闭塞行复合手术再通治疗患者的病历资料，根据是否再通成功，将其分为再通成功组与再通失败组。血管成功再通定义为术后即刻改良脑梗死溶栓(mTICI)分级≥2b级且残余狭窄率0.05)。13例再通成功组中9例完成了影像学随访，随访时间3.8～36.9个月，中位随访时间为22.8(12.8,34.7)个月，其中1例(1/9)患者于术后33.0个月发生再通血管的再狭窄，再次行支架置入治疗。结论初步分析表明，采用复合手术再通颈动脉支架置入后闭塞有较好的再通成功和较低的围手术期并发症。对于颈动脉支架置入术后慢性闭塞患者，在多模态影像学评估下，可尝试应用复合手术行再通治疗。

关键词：支架置入术后闭塞颈动脉闭塞复合手术再通治疗

不同补光时长对日光温室西葫芦生长、品质及产量的影响

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中国瓜菜 2020年第4期33卷 23-27页

作者：王舒亚徐威唐中祺王鹏景涛刘琪马正宇吕剑郁继华甘肃农业大学园艺学院兰州730070

我国西北地区冬季光照时间短,日光温室内部光照不足,严重影响设施越冬茬蔬菜的生长发育,本试验使用LED植物生长灯对日光温室西葫芦进行补光,以期筛选出西北地区设施越冬茬西葫芦栽培最佳补光时长,为日光温室补光技术的研究和应用提供理... 详细信息

我国西北地区冬季光照时间短,日光温室内部光照不足,严重影响设施越冬茬蔬菜的生长发育,本试验使用LED植物生长灯对日光温室西葫芦进行补光,以期筛选出西北地区设施越冬茬西葫芦栽培最佳补光时长,为日光温室补光技术的研究和应用提供理论依据。在日光温室条件下,以LED植物生长灯(红蓝7∶2)为补光光源,以不补光为对照,研究不同补光时长(1、2、3 h)对西葫芦生长发育、品质、产量及经济效益的影响。结果表明:与无补光对照相比,补光2、3 h处理显著增加西葫芦果实中维生素C含量、可溶性蛋白含量和糖酸比;补光3 h处理西葫芦的单株结果数、单果质量和产量均显著增加,增幅分别为11.9%、6.8%和11.5%,并且补光3 h处理每667 m^2增加西葫芦经济收入1 307.3元。综上,补光3 h对西葫芦的果实品质改善、产量的提高及农户收入的增加效果最好。

关键词：西葫芦补光日光温室生长品质产量