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Effects of chemical,mineralogical,and temperature variations on the density and bulk sound velocity of the bottom lower mantle

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Science China Earth Sciences 2016年第10期59卷 2062-2077页

作者： bian hui SUN NingYu MAO Zhu Laboratory of Seismology and Physics of Earth's Interior School of Earth and Planetary SciencesUniversity of Science and Technology of ChinaHefei 230026China National Geophysics Observatory at Mengcheng Mengcheng 233500China

In this study, we have modeled the density （p） and bulk sound velocity （V.） profiles of the bottom lower mantle using the experimental thermal equation of state （EoS） parameters of lower-mantle minerals, including bridgmanite, ferropericlase, CaSiO3-perovskite, and post-perovskite. We re-evaluated the literature pressure-volume-temperature relationships of these minerals using a self-consistent pressure scale in order to avoid the long-standing pressure scale problem and to provide more reliable constraints on the thermal EoS parameters. With the obtained thermal EoS parameters, we have constructed the p and V. profiles of the bottom lower mantle in different composition, mineralogy, and temperature models. Our modelling results show that the variations of chemistry, mineralogy, and temperature and AI enrichment at the bottom lower mantle can cause an increase have different seismic signatures from each other. The Fe in p but greatly lower V.. A change in mineralogy needs to be considered with the lateral variation in temperature. The cold slabs will be shown as denser regions compared to the normal mantle because of the combined effect of a lower temperature and the presence of a denser post-perovskite at a shallower depth, whereas the hot regions will have a 1-2% lower p than the normal mantle. V, of both cold slabs and hot regions will he lower than the normal mantle when bridgmanite is the dominant phase in the normal mantle, yet they will be greater once bridgmanite transforms into post-perovskite in the normal mantle. Our modeling also shows that the presence of a （Fe, Al）-enriched bridgmanite thermal pile above the core-mantle boundary will exhibit a seismic signature of enhancedp and V., but a reduced Vs, which is consistent with the observed seismic anomalies in the large-low-shear-velocity-provinces （LLSVPs）. The existence of such a （Fe, A1）-enriched bridgmanite thermal pile thus can help to understand the origin of the LLSVPs. These results provide new in

关键词： Bottom lower mantle Density Bulk sound velocity Chemical heterogeneity Temperature

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Thermal performance of a single-layer packed metal pebble-bed exposed to high energy fluxes

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Frontiers in Energy 2021年第2期15卷 513-528页

作者： Shengchun ZHANG Zhifeng WANG hui bian Pingrui HUANG Key Laboratory of Solar Thermal Energy and Photovoltaic System Chinese Academy of SciencesBeijing 100190China Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Beijing Engineering Research Center of Solar Thermal Power Beijing 100190China 2.Lanzhou University of TechnologyLanzhou 730050China

It is difficult to accurately measure the temperature of the falling particle receiver since thermocouples may directly be exposed to the solar *** study analyzes the thermal performance of a packed bed receiver using large metal spheres to minimize the measurement error of particle temperature with the sphere temperature reaching more than 700°C in experiments in a solar furnace and a solar *** numerical models of a single sphere and multiple spheres are verified by the *** multiple spheres model includes calculations of the external incidence,view factors,and heat *** effects of parameters on the temperature variations of the spheres,the transient thermal efficiency,and the temperature uniformity are investigated,such as the ambient temperature,particle thermal conductivity,energy flux,sphere diameter,and sphere *** the convection is not considered,the results show that the sphere emissivity has a significant influence on the transient thermal efficiency and that the temperature uniformity is strongly affected by the energy flux,sphere diameter,and sphere *** the emissivity increases from 0.5 to 0.9,the transient thermal efficiency and the average temperature variance increase from 53.5%to 75.7%and from 14.3%to 27.1%at 3.9 min,*** average temperature variance decreases from 29.7%to 9.3%at 2.2 min with the sphere diameter increasing from 28.57 mm to 50 *** the dimensionless energy flux increases from 0.8 to 1.2,the average temperature variance increases from 13.4%to 26.6%at 3.4 min.

关键词： packed bed solar thermal power plants high heat fluxes radiative heat transfer

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Perovskite–A wonder catalyst for solar hydrogen production

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Journal of Energy Chemistry 2021年第6期30卷 325-340,I0008页

作者： hui bian Deng Li Junqing Yan Shengzhong(Frank)Liu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationChina Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina Dalian National Laboratory for Clean Energy China iChEM Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Hydrogen generation via artificial photosynthesis paves a promising way to remit the ever-increasing energy crisis and deteriorative environmental *** all the materials utilized for solar hydrogen production,perovskite has emerged as a rising star due to its superior optoelectronic *** manuscript aims to provide a comprehensive review summarizing the recent inspiring advancements on perovskite-based solar hydrogen production systems,including the particulate photocatalysis,photoelectrochemical cells,and photovoltaic-electrocatalytic *** start with a brief introduction of the advantages of perovskites for solar hydrogen production and the basic principles of the three most prominent solar hydrogen production *** representative progresses in this field are then detailed with a special emphasis on the strategies to improve the efficiency and the stability of the ***,challenges and opportunities for the further development of the PVK-based solar hydrogen production systems are presented with perspective given on outlook,performance,cost and stability.

关键词： Perovskite Solar hydrogen production Photocatalysis Photoelectrocatalysis Photovoltaic-electrocatalysis

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Progress in the research on organic piezoelectric catalysts for dye decomposition

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 245-260页

作者： Zhaoning Yang Xiaoxin Shu Di Guo Jing Wang hui bian Yanmin Jia School of Science Xi’an University of Posts and TelecommunicationsXi’an 710121China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710119China

Organic contaminants have posed a direct and substantial risk to human wellness and the *** recent years,piezo-electric catalysis has evolved as a novel and effective method for decomposing these *** piezoelectric materials offer a wide range of options,most related studies thus far have focused on inorganic materials and have paid little attention to organic *** materials have advantages,such as being lightweight,inexpensive,and easy to process,over inorganic ***,this paper provides a comprehensive review of the progress made in the research on piezoelectric catalysis using organic materials,high-lighting their catalytic efficiency in addressing various *** addition,the applications of organic materials in piezoelectric cata-lysis for water decomposition to produce hydrogen,disinfect bacteria,treat tumors,and reduce carbon dioxide are ***,fu-ture developmental trends regarding the piezoelectric catalytic potential of organic materials are explored.

关键词： piezoelectric catalysis piezoelectric material dye decomposition organic materials

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Direct technetium-99m labeling of anti-hepatoma monoclonal antibody fragment:a radioimmunoconjugate for hepatocellular carcinoma imaging

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World Journal of Gastroenterology 2000年第3期6卷 348-352页

作者： hui Jie bian Zhi Nan Chen Jing Lan Deng Cell Engineering Research Center Basic Medical.DepartmentFourth Military Medical UniversityXi’an 710032Shaanxi ProvinceChina Department of Clinical Nuclear Medicine Xijing HospitalXi’an 710033Shaanxi ProvinceChina

AIM To directly radiolabel an anti-hepatomamAb fragment HAb18 F（ab’）2 with 99mTc bystannous-reduced method,and assess thestability,biodistribution and radioimmun-oimaging（RⅡ）.METHODS Immunoreactive fraction wasdetermined according to Lindmo’s ***’s reagent was used to determine thenumber of thiols in the reduced F（ab’）2.Labelingefficiency and homogeneity were measured bypaper chromatography,sodium dodecylsulphatepolyacrylamide gel electrophoresis（SDS-PAGE）and *** assay involvedthe incubation of aliquots of labeled antibody inethylenediaminetetraacetate（ EDTA ）and L-cysteine（L-cys）solutions with different molarratio at 37℃ for 1h,*** vivo utilized nude mice bearing humanhepatocellular carcinoma（HHCC）xenograftswith gamma camera imaging and tissuebiodistribution studies at regular *** The labeling procedure was finishedwithin 1.5 h compared with the'pretinning'method which would take at least *** vitrostudies demonstrated that the radiolabeled mAbfragment was homogeneous and retained *** studies indicatedthat 99mTc-labeled HAb18 F（ab’）2 in EDTA is morestable than in *** and biodistribution showed a significant tumor uptake at 24 h post-injection of 99mTc-labeled HAb18 F（ab’）2.Theblood,kidney,liver and tumor uptakes at 24hwere 0.56±0.09,56.45±11.36,1.43±0.27 and6.57±3.01（%ID/g）,*** 99mTc-HAb18 F（ab’）2 conjugateprepared by this direct method appears to be aneffective way to detect hepatoma in nude micemodel.

关键词： antibody monoclonal antibody fragments technetium-99m hepatocellular carcinoma liver neoplasms radioimmunoimaging

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Jumping the Trough" to a Better Career

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China Today 1994年第1期43卷 12-13页

作者： $$$$bian hui

As China's ecomomy develops,many people stuck in dead-end jobs assigned to them by the govemment are becoming increasingly anrious to find a career where they can make good money doing something they *** is not always...

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The Face of Private Enterprise in China

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China Today 1994年第2期43卷 18-20页

作者： bian hui

Private business in China is the most active it has been for *** effects on China's economic develop-ment and on the country's system of public ownership are not to be un-derestimated.

关键词： The Face of Private Enterprise in China

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So That Everyone Has a Place to Live

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China Today 1994年第5期43卷 12-14页

作者： $$$$bian hui

ＳｏＴｈａｔＥｖｅｒｙｏｎｅＨａｓａＰｌａｃｅｔｏＬｉｖｅ￥ＢＩＡＮＨＵＩＴｈｅＦａｎｇｚｈｕａｎｇＲｅｓｉｄｅｎｔｉａｌＣｏｍｍｕｎｉｔｙｕｎｄｅｒｇｏｉｎｇｅｘｐａｎｓｉｏｎ．（Ｈｏｕｓｉｎｇａｕｔｈｏｒｉｔｉｅ...

ＳｏＴｈａｔＥｖｅｒｙｏｎｅＨａｓａＰｌａｃｅｔｏＬｉｖｅ￥ＢＩＡＮＨＵＩＴｈｅＦａｎｇｚｈｕａｎｇＲｅｓｉｄｅｎｔｉａｌＣｏｍｍｕｎｉｔｙｕｎｄｅｒｇｏｉｎｇｅｘｐａｎｓｉｏｎ．（ＨｏｕｓｉｎｇａｕｔｈｏｒｉｔｉｅｓｉｎＢｅｉｊｉｎｇｗｅｒｅｆａｃ...

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Preparation and immunogenicity of tag-free recombinant human eppin

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Asian Journal of Andrology 2011年第6期13卷 889-894页

作者： Jie Zhang Xin-Liang Ding Zeng-hui bian Yan-Kai Xia Shou-Lin Wang Ling Song Xin-Ru Wang School of Radiation Medicine and Public Health Medical College of Soochow University Suzhou 215123 China Department of Public Health Wuxi Center for Disease Prevention and Control Wuxi 214023 China Municipal Center for Disease Control and Prevention Nanjing 210003 China Key Laboratory of Reproductive Medicine Institute of Toxicology Nanjing Medical University Nanjing 201129 China

Human epididymal protease inhibitor （eppin） may be effective as a male contraceptive vaccine. In a number of studies, eppin with an engineered His6-tag has been produced using prokaryotic expression systems. For production of pharmaceutical-grade proteins for human use, however, the His6-tag must be removed. This study describes a method for producing recombinant human eppin without a His6-tag. We constructed plasmid pET28a （＋）-His6-tobacco etch virus （TEV）-eppin for expression in Escherichia coli. After purification and refolding, the fusion protein His6-TEV-eppin was digested with TEV protease to remove the His6-tag and was further purified by NTA-Ni2＋ affinity chromatography. Using this procedure, 2 mg of eppin without a His6-tag was isolated from 1 I of culture with a purity of 〉95%. The immunogenicity of the eppin was characterized using male Balb/c mice.

关键词： Eppin immunogenicity male contraception recombinant protein preparation tag-free

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Se-sensitized NIR hot band absorption photosensitizer for anti-Stokes excitation deep photodynamic therapy

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Science China Chemistry 2022年第3期65卷 563-573页

作者： Dandan Ma hui bian Saran Long Panwang Zhou Ruisong Tian Yingnan Wu Haoying Ge Mingle Li Jianjun Du Jiangli Fan Yukui Zhang Xiaojun Peng State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116024China Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China Institute of Molecular Sciences and Engineering Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Shenzhen Research Institute Dalian University of TechnologyShenzhen 518057China Department of Chemistry Korea UniversitySeoul 02841Republic of Korea

Conventional anti-Stokes materials-involved deep photodynamic therapy(dPDT)requires much high-intensity irradiance due to low photosensitization ***,we proposed a"booster effector"approach to construct highly efficient hot band absorption phototherapeutics for low/biosafety power anti-Stokes light-triggered d ***,as"booster effector",was introduced into hot band absorption luminophores(HBAs),which not only significantly facilitated intersystem crossing,but also simultaneously enhanced hot band excitation efficiency atν808,as a result successfully enabling excellent photogenerated singlet oxygen capability of HBAs under ultra-low power anti-Stokes excitation(10 mW cm^(-2)in vitro).As far as we know,such low laser power-initiated photosensitization activity has never been reported in the existing anti-Stokes material ***,FUC-Se ME can self-assemble into uniform nanospheres in water,greatly boosting cellular uptake(>25-fold larger than FUC-Se),and achieve superior cancer-killing effect(808 nm,10 mW cm^(-2),5 min,the half-maximal inhibitory concentration IC50=1.36μM).After further PEGylation with folate-attached polymer,the resultant FUC-Se ME@FA can effectively enrich at the tumor(signal-to-background ratio,10).Under safety irradiation(330 mW cm^(-2)),FUC-Se ME@FA effectively inhibits deep-seated tumor progression(the tumor growth inhibition rate,84%).This work provides a successful paradigm,possibly being more clinically beneficial than conventional anti-Stokes materials.

关键词： anti-Stokes hot band absorption photodynamic therapy deep-seated tumor low power

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