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Production and test of sPHENIX W/SciFiber electromagnetic calorimeter blocks in China

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Nuclear Science and Techniques 2024年第8期35卷 167-176页

作者： Xiao‑Zhou Yu Xi‑Yang Wang Wei‑Hu Ma Shi‑Hong Fu Peng‑Fei Sun jin‑Xing Song Wan‑Bing He Yang Shen Long Ma jin‑Hui Chen Huan‑Zhong Huang Si‑guang Wang jing Zhou Xiao‑Mei Li Institute of Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Physics and Ion‑Beam Application(MOE) Fudan UniversityShanghai 200433China Science and Technology on Nuclear Data Laboratory China Institute of Atomic EnergyBeijing 102413China Department of Physics and Astronomy University of CaliforniaLos AngelesCA 90095USA State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China

The sPHENIX experiment is a new generation of large acceptance detectors at the relativistic heavy ion collider at Brookhaven National Laboratory,with scientific goals focusing on probing the strongly interacting Quark–Gluon plasma with hard probes of jets,open heavy flavor particles,andγ*** EMCal detector,which covers the pseudo-rapidity region of|η|≤1.1,is an essential subsystem of *** this study,we focused on producing and testing EMCal blocks covering a pseudo-rapidity of|η|∈[0.8,1.1].These,in conjunction with the central pseudo-rapidity EMCal blocks,significantly enhance the sPHENIX physics capability of the jet andγparticle *** this paper,the detector module production and testing of sPHENIX W-powder/scintillating fiber(W/ScFi)electromagnetic calorimeter blocks are *** selection of the tungsten powder,mold fabrication,QA procedures,and cosmic ray test results are discussed.

关键词： sPHENIX Tungsten/scintillating fiber electromagnetic calorimeter Cosmic ray test

直链淀粉交联氨基酸酯取代聚膦腈杂化材料的制备

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高等学校化学学报 2009年第5期30卷 1040-1045页

作者：林益军刘志玲代永强蔡晴李齐方金日光新型高分子材料制备与加工北京市重点实验室北京化工大学材料科学与工程学院北京100029

利用直链淀粉与甘/丙氨酸乙酯共取代聚膦腈交联,制得了一种具有网络结构的新型杂化材料.实验结果表明,淀粉衍生物上的羟基转变为醇钠后,可与聚膦腈分子链上的P—Cl键发生亲核取代反应;所得聚合物膜无明显相分离,力学性能优于具有相似组... 详细信息

利用直链淀粉与甘/丙氨酸乙酯共取代聚膦腈交联,制得了一种具有网络结构的新型杂化材料.实验结果表明,淀粉衍生物上的羟基转变为醇钠后,可与聚膦腈分子链上的P—Cl键发生亲核取代反应;所得聚合物膜无明显相分离,力学性能优于具有相似组成的直链淀粉/聚膦腈共混膜,表面亲水性和吸水率与对应的共混膜接近,且均高于纯聚膦腈膜.因此,该聚合物可作为杂化生物材料用于药物控制释放和组织工程方面的研究.

关键词：氨基酸酯取代聚膦腈直链淀粉杂化生物材料

Androgen signaling inhibits de novo lipogenesis to alleviate lipid deposition in zebrafish

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Zoological Research 2024年第2期45卷 355-366页

作者： jing-Yi Jia guang-Hui Chen Ting-Ting Shu Qi-Yong Lou Xia jin Jiang-Yan He Wu-Han Xiao Gang Zhai Zhan Yin College of Fisheries Huazhong Agriculture UniversityWuhanHubei 430070China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhanHubei 430072China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes Chinese Sturgeon Research InstituteChina Three Gorges CorporationYichangHubei 443100China Hubei Hongshan Laboratory Huazhong Agriculture UniversityWuhanHubei 430070China Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100049China

Testosterone is closely associated with lipid metabolism and known to affect body fat composition and muscle mass in ***,the mechanisms by which testosterone acts on lipid metabolism are not yet fully understood,especially in *** this study,cyp17a1-/-zebrafish(Danio rerio)exhibited excessive visceral adipose tissue(VAT),lipid content,and up-regulated expression and activity of hepatic de novo lipogenesis(DNL)*** assay for transposase accessible chromatinwithsequencing(ATAC-seq)results demonstrated that chromatin accessibility of DNL genes was increased in cyp17a1-/-fish compared to cyp17a1+/+male fish,including stearoyl-CoA desaturase(scd)and fatty acid synthase(fasn).Androgen response element(ARE)motifs in the androgen signaling pathway were significantly enriched in cyp17a1+/+male fish but not in cyp17a1-/-*** androgen receptor(ar)-/-and wildtype(WT)zebrafish administered with Ar antagonist flutamide displayed excessive visceral adipose tissue,lipid content,and up-regulated expression and activity of hepatic de novo lipogenesis *** Ar agonist BMS-564929 reduced the content of VAT and lipid content,and down-regulated acetyl-CoA carboxylase a(acaca),fasn,and scd ***,the rescue effect of testosterone on cyp17a1-/-fish in terms of phenotypes was abolished when ar was additionally ***,these findings reveal that testosterone inhibits lipid deposition by down-regulating DNL genes via Ar in zebrafish,thus expanding our understanding of the relationship between testosterone and lipid metabolism in teleosts.

关键词： Cyp17a1 Testosterone Androgen receptor De novo lipogenesis Fatty acid synthesis

高效液相色谱法测定五加茸血口服液中异嗪皮啶的含量

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长春中医药大学学报 2007年第4期23卷 30-31页

作者：金光日洪海延边大学附属医院药剂科吉林延吉133000 吉林敖东药业集团延吉股份有限公司吉林延吉133000

目的：测定五加茸血口服液中异嗪吡啶的含量。方法：用高效液相色谱法,以ODSC18柱（150mm×4.6mmID,5μm）为固定相,乙腈-0.1%磷酸溶液（20：80）为流动相,检测波长为342nm。结果：异嗪吡啶在18.752-187.52×10^-3μg范围内呈现良好线性... 详细信息

目的：测定五加茸血口服液中异嗪吡啶的含量。方法：用高效液相色谱法,以ODSC18柱（150mm×4.6mmID,5μm）为固定相,乙腈-0.1%磷酸溶液（20：80）为流动相,检测波长为342nm。结果：异嗪吡啶在18.752-187.52×10^-3μg范围内呈现良好线性,相关系数r=0.9997。平均加样回收率95.26%,RSD为1.31%（n=6）。结论：方法简便、准确、重现性好。

关键词：异嗪皮啶高效液相色谱法刺五加

Layered niobium carbide enabling excellent kinetics and cycling stability of Li-Mg-B-H hydrogen storage material Layered niobium carbide enabling excellent kinetics

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Rare Metals 2024年第3期43卷 1153-1166页

作者： Li-Wen Lu Hui Luo guang-Xu Li Yun Li Xin-Hua Wang Cun-Ke Huang Zhi-QiangLan Wen-Zheng Zhou jin Guo Mohammad Ismail Hai-Zhen Liu guangxi Novel Battery Materials Research Center of Engineering Technology Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems IntegrationSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning530004China School of Mechanical and Electrical Engineering Quzhou College of TechnologyQuzhou324000China Department of Materials Science and Engineering Zhejiang UniversityHangzhou310027China Faculty of Ocean Engineering Technology and Informatics Universiti Malaysia Terengganu21030Kuala NerusTerengganuMalaysia Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Nankai UniversityTianjin300071China

The Li-Mg-B-H composite(2LiBH_(4)+MgH_(2))has a high capacity of 11.4 wt%as a hydrogen storage ***,the slow kinetics and poor cycling stability severely restrict its practical *** this work,a layered Nb_(2)C MXene was first synthesized and then introduced to tailor the kinetics and cycling stability of the Li-Mg-B-H *** milled 2LiH+MgB_(2)composites were initially hydrogenated to obtain the 2LiBH_(4)+MgH_(2)*** 2LiBH_(4)+MgH_(2)+5wt%Nb_(2)C can release 9.0 wt%H_(2)in 30 min at 400℃,while it is only 2.7 wt%for the undoped 2LiBH_(4)+MgH_(2).The dehydrogenation activation energies of MgH_(2)and LiBH_(4)are 123 and 154 kJ·mol^(-1)respectively for the 5 wt%Nb_(2)C-doped composite,lower than the undoped composite(164 and 165 kJ·mol^(-1)).The 2LiBH_(4)+MgH_(2)+5 wt%Nb_(2)C possesses excellent cycling stability,with the reversible capacity only slightly reduced from 9.4 wt%for the 1st cycle to 9.3 wt%for the 20th ***_(2)C keeps stable in the composite and acts as an efficient catalyst for the Li-Mg-B-H *** is believed that both the layered structure and the active Nb element contribu te to the enhanced hydrogen storage performances of the Li-Mg-B-H *** work confirms that the Nb_(2)C MXene with layered stru cture has a significant enhancing impact on the Li-Mg-B-H hydrogen storage materials,which is different from the bulk NbC.

关键词： Hydrogen storage Lithium borohydride Magnesium hydride Nb_(2)C MXene

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温敏性嵌段共聚物纳米胶束的制备及其稳定性

功能高分子学报 2008年第3期21卷 242-247,259页

作者：王国明刘文博蔡晴金日光北京化工大学材料科学与工程学院北京市高分子材料制备与加工重点实验室北京100029

通过N-异丙基丙烯酰胺(NIPAAm)和N,N-二甲基丙烯酰胺(DMAAm)在链转移剂巯基乙醇存在下的自由基共聚,制备了具有端羟基的共聚物P(NIPAAm-co-DMAAm)。利用其端羟基在异辛酸亚锡催化下引发己内酯开环聚合,得到了两亲性嵌段共聚物P(NIPAAm-c... 详细信息

通过N-异丙基丙烯酰胺(NIPAAm)和N,N-二甲基丙烯酰胺(DMAAm)在链转移剂巯基乙醇存在下的自由基共聚,制备了具有端羟基的共聚物P(NIPAAm-co-DMAAm)。利用其端羟基在异辛酸亚锡催化下引发己内酯开环聚合,得到了两亲性嵌段共聚物P(NIPAAm-co-DMAAm)-b-PCL,并在聚己内酯(PCL)链末端引入可光催化反应的不饱和双键。通过1H-NMR、GPC和相转变温度(LCST)等方法对聚合物进行了结构表征,测定了嵌段共聚物形成胶束的临界胶束浓度和胶束粒径,比较了核交联前后胶束的粒径和稳定性。结果表明:通过调节共聚物的组成,可获得LCST在40℃附近的胶束,胶束经核交联后,粒径有所减小,但稳定性明显提高,可用于对药物的温敏控制释放。

关键词：嵌段共聚物温敏性纳米胶束核交联

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桑白皮对四氯化碳诱导的急性肝损伤的影响

内蒙古中医药 2011年第6期30卷 38-39页

作者：金光日延光海金光玉洪海延边大学附属医院 133000 延边大学基础医学院解剖学教研部 133000 延边中医院 133000

目的:观察桑白皮乙醇提取物(EEMA)对四氯化碳(CCl_4)诱导大鼠急性肝坏死的影响。方法:将Wistar大鼠分为5组(对照组、CCl_4组、EEMA+CCl_4组和Silibinin+CCl_4组),分别用生理盐水、EEMA和Silibinin灌胃7天,最后1天,腹腔注射CCL_4,16h后... 详细信息

目的:观察桑白皮乙醇提取物(EEMA)对四氯化碳(CCl_4)诱导大鼠急性肝坏死的影响。方法:将Wistar大鼠分为5组(对照组、CCl_4组、EEMA+CCl_4组和Silibinin+CCl_4组),分别用生理盐水、EEMA和Silibinin灌胃7天,最后1天,腹腔注射CCL_4,16h后检测血清中丙氨酸氨基转移酶(ALT)、天冬氨酸氨基酸转移酶(AST)、碱性磷酸酶(ALP);肝组织苏木素-伊红(HE)染色观察病变程度;黄嘌呤氧化酶法和硫代巴比妥酸法分别检测肝匀浆中超氧化物岐化酶(SOD)、过氧化氢酶(CAT)和丙二醛(MDA)。结果:与对照组比较,CCl_4组血清中ALT、AST、ALP的含量显著增加(P<0.05),HE染色肝组织变性坏死累及全小叶。与CCl_4组比较,EEMA+CCl_4组血清中ALT、AST、ALP的含量显著下降(P<0.05);HE染色病变程度较轻,变性坏死局限于肝小叶的Ⅲ区;胞浆中SOD和CAT活性提高、MDA水平降低(P<0.05)。结论:EEMA能显著减轻CCl_4诱导的肝损伤,可能与EEMA抗脂质过氧化作用有关。

关键词：桑白皮大鼠四氯化碳肝损伤

A review on WO_(3)-based composite photocatalysts:synthesis,catalytic mechanism and diversified applications

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Rare Metals 2024年第8期43卷 3441-3459页

作者： Xue Zhang Zi-Qi Zhang Yan-Dong Sun Xiao-Jia Ma Feng-Xian jin Fang-Yuan Zhang Wei-guang Han Bo-Xiong Shen Sheng-Qi Guo College of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Department of Food and Chemical Engineering Liuzhou Institute of TechnologyLiuzhou 545616China

Photocatalysis as an emerging "green" energy conversion technology has attracted domestic and international *** technology uses semiconductor photocatalysts to convert solar energy into directly usable chemical energy,showing great potential for application in environmental pollutant purification and clean energy production,with broad development *** many semiconductor materials,tungsten trioxide(WO_(3)) is favored by researchers in the field of photocatalysis because of its good visible light response and excellent valence band hole oxidation ***,a large number of photocatalysts based on WO_(3),in particular W03-based composite photocatalysts,have been reported,and their applications cover a wide range of *** order to promote the development of WO_(3)-based photocatalysts and provide a reference for colleagues,we present a systematic summary of the applications and research progress of W03-based composites in the field of photocatalysis in recent *** from the structural properties of WO_(3)itself,this article summarizes the preparation methods and structure-activity relationships of WO_(3)-based composite ***,it introduces the current application status of existing WO_(3)-based composite photocatalysts in CO_(2) reduction,hydrogen production,nitrogen fixation,and pollutant ***,the development prospects were analyzed.

关键词： WO_(3)-based composite photocatalysts Intrinsic characteristic Preparation method Reaction mechanism Applications

Enhanced charge collection of AgNWs-based top electrode to realize high-performance,all-solution processed organic solar cells

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Science China Chemistry 2024年第10期67卷 3347-3356页

作者： Juanyong Wan Yang Chen Weijie Chen jinfeng Xia guang Zeng Jianlei Cao Chuang jin Yunxiu Shen Xiaoxiao Wu Haiyang Chen Junyuan Ding Xue-mei Ou Yaowen Li Yongfang Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhou 215123China State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Jiangsu Sidike New Materials Science and Technology Co. Ltd.Suqian 215400China

All-solution processed organic solar cells are the ultimate aim of printable photovoltaics,but their electrical losses arising from poor contact of top electrodes greatly limit efficiency *** solve the problem,a solution-processed hybrid top electrode was constructed using silver nanowires(AgNWs)as the skeleton and ZnO nanoparticles(ZnO-NPs)as the *** constructing the skeleton,a spin-rinsing treatment was first used to reduce the amount of the residual insulating polyvinylpyrrolidone wrapped around the AgNWs to promote intimate contact among the AgNWs in the ***,the ZnO-NPs matrix was deposited onto the AgNWs skeleton,bridging the AgNWs skeleton with the underlayer ZnO-NPs electron transporting layer(ETL).The underlayer ZnO-NPs ETL can also induce the growth of the ZnO-NPs matrix to minimize lattice mismatch,which creates additional transport channels from the ETL to the AgNWs skeleton for charge *** a result,the obtained electrode significantly enhances the electrical contact in the device,thus delivering record power conversion efficiencies of 16.04%and 14.54%for rigid and flexible all-solution processed OSCs,respectively.

关键词： solution-processed top electrode organic solar cells AgNWs electrical contact