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Solvent extraction with a three-dimensional reticulated hollow-strut SiC foam microchannel reactor

Chinese Journal of Chemical Engineering 2022年第6期35卷 53-62页

作者： Ye zhang Yong Gao Peng Wang Duo Na Zhenming Yang jinsong zhang School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Recently,there has been considerable interest in the use of microchannel reactors for hydrometallurgy of rare earths(REs).Here,a novel integrated microchannel reactor based on the hollow-strut SiC foam material is presented and demonstrated to extract Ce^(3+)and Pr^(3+)using 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester(P507)as the *** typical three-dimensional reticulated structure of the hollow-strut SiC foam was characterized by scanning electron microscopy and X-ray micro computed *** the reactor’s structure plays a key role in fluid mixing and mass diffusion during the extraction process,the structure-performance relationship of the foam was studied by extraction experiments combined with numerical *** the foam with the optimal structure,the influence of the flow rate Q_(0) of the two liquid phases on the extraction efficiency η and overall volume mass transfer coefficient KLa was *** both RE ions,with increasing Q_(0),η decreases while KLa *** the total flow rate of the two phases of 4 ml·min^(-1),the η values of Pr^(3+)and Ce^(3+)reached 98.7%and 97.0%,*** the total flow rate of 36 ml·min^(-1) which was much higher than that of many other microchannel reactors reported in the literatures,the η values of Pr^(3+)and Ce^(3+)still reached 92.2%and 86.9%,respectively,and the KLa values of Pr^(3+)and Ce^(3+)were 0.198 and 0.161 s^(-1),respectively,similar to the high values reported for other microchannel reactors studied in previous *** findings indicate that the hollow-strut SiC foam microchannel reactor is suitable for use in REs extraction.

关键词： Extraction Hollow Foam Microchannels Numerical simulation

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Ethylene signaling in rice

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Chinese Science Bulletin 2010年第21期55卷 2204-2210页

作者： MA Biao CHEN ShouYi zhang jinsong Plant Gene Research Center National Key Lab of Plant Genomics Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Ethylene regulates many aspects of growth,development and responses to environmental stresses in *** signaling pathway has been established in model dicotyledonous plant ***,its roles and signal transduction in monocotyledous rice plant remain largely *** this review,we summarize the current advances in rice ethylene signaling studies and compare these with the results from Arabidopsis and other *** of the components homologous to those in Arabidopsis ethylene signaling pathway have been found in rice,including five ethylene receptors,OsEIN2,OsEIL1,and *** ethylene receptors are functionally more divergent than that of ***2 and OsEIL1 display limited roles in regulation of rice ethylene responses compared with their Arabidopsis ***-like proteins OsERF1 and OsEBP-89 appear to be involved in rice ethylene ***,whether they are activated through OsEIN2 and OsEIL1-mediated pathway needs further *** that rice uses ethylene to control many processes that do not exist in Arabidopsis,it seems that new components or new mechanisms may exist in rice ethylene signaling pathway.

关键词：信号转导通路乙烯受体水稻植物响应拟南芥双子叶植物电流变液体调控作用

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Three-source partitioning of soil respiration by ^(13)C natural abundance and its variation with soil depth in a plantation

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Journal of Forestry Research 2016年第3期27卷 533-540页

作者： Wenchen Song Xiaojuan Tong jinsong zhang Ping Meng College of Forestry Beijing Forestry University Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of ForestryChinese Academy of Forestry

Partitioning soil respiration into three components is vital to identify CO_2 sink or source and can help us better understand soil carbon dynamics. However, knowledge about the influences of soil depth and the priming effect on soil respiration components under field has been limited. Three components of soil respiration（root respiration, rhizomicrobial respiration and basal respiration） in a plantation in the hilly area of the North China were separated by the 13 C natural abundance method. The results showed that the average proportions of rhizomicrobial respiration, root respiration and basal respiration at the 25-65 cm depths were about 14, 23 and 63 %, respectively. Three components of soil respiration varied with soil depth, and root respiration was the main component of soil respiration in deeper soil. The priming effect was obvious for the deep soil respiration, especially at the 40-50 cm depth. Thus, depth and priming effect should be taken into account to increase the accuracy of estimations of soil carbon flux.

关键词： Soil respirationRhizomicrobial respiration abundance Soil depth Rhizosphere respiration Root respiration 13C natural

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Seasonal dynamics of foliar δ^(13)C and nutrient concentration of Chinese chastetree and spine jujube in foothill rock outcrop habitat of the southern Taihang Mountains, Central China

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Journal of Forestry Research 2019年第1期30卷 45-56页

作者： Chunxia He jinsong zhang Ping Meng Jun Gao Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of ForestryChinese Academy of Forestry Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry University

In this study, in situ investigation was conducted on Chinese chastetree(Vitex negundo var. heterophylla)and spine jujube(Ziziphus jujuba var. spinosa) during early, developed, and closing succession stages. Monthly data were recorded for foliar δ^(13)C values and foliar N, P,and K concentrations from May to October. Foliar δ^(13)C values declined with time and differences by succession stage varied by species. Older spine jujube displayed higher foliar N concentration while foliar P concentration was inversely related with N. Chinese chastetree had lower foliar K concentration than spine jujube. Foliar C/N ratio declined during the dry season and increased in the wet season. Foliar N/P ratio increased during the dry season and declined to its initial level until October, when it increased again. Foliar δ^(13)C value was positively correlated with foliar N concentration. Foliar P and K concentrations were positively correlated to each other. In conclusion, the two shrubs had contrasting strategies of water use efficiency during their succession, but water use efficiency of both species was promoted by N availability and limited by P availability.

关键词： Global climatic change Agroforestry Natural regeneration Deciduous plant Arid land

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Foam structure to improve microwave absorption properties of silicon carbide/carbon material

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Journal of Materials Science & Technology 2019年第11期35卷 2658-2664页

作者： Wanchong Li Chusen Li Lihai Lin Yan Wang jinsong zhang Institute of Metal Research Chinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Aviation Key Laboratory of Science and Technology on Electromagnetic Environmental Effects Shenyang Aircraft Design and Research InstituteAVICShenyang 110000China

Foam structure materials are well known for their lightweight,efficient,and broadband microwave absorption properties compared to bulk ***,little has been understood about the effect of a foam structure on the absorption performance of the foam *** this study,the role of foam structure properties of the silicon carbide/carbon(SiC/C)foam material on microwave absorption is explored using experiment and *** find that the foam structure of SiC/C foam material causes diffraction,multiple reflections,improves the interfacial polarization,and *** absorption performance of SiC/C foam material is also ***-10 dB effective absorption bandwidth can be adjusted from 4.0 GHz to 18 GHz by tuning SiC/C foam material thickness to 3-7 ***,the foam structure design is an effective way to improve the absorption performance of the SiC/C foam material.

关键词： Foam materials Microwave absorption properties Structure effects

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Novel TiC/Ti Open Cellular Foams Prepared by a Modified Sponge-coating Method Using High Frequency Induction Heating Process

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Journal of Materials Science & Technology 2013年第4期29卷 339-343页

作者： Yong Gao Xingxiang Xu Zhenming Yang Junqi zhang Chunhai Jiang jinsong zhang Institute of Metal Research Chinese Academy of Sciences

A new kind of open cellular foam material with three dimensionally interconnected TiC/Ti struts was prepared by a two-step sponge-coating and high frequency induction heating process. The microstructure, composition and compression strength of the prepared TiC/Ti foam materials were characterized. It was confirmed that the incorporation of Ti into TiC resulted in an inter-bonded Ti-TiC-Ti layered structure in the struts, which enhanced the plasticity of the composite foam materials.

关键词： TiC/Ti foams Composite Sintering Porosity Mechanical properties

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Invertebrate community characteristics in biologically active carbon filter

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Journal of Environmental Sciences 2010年第5期22卷 648-655页

作者： Xiaowei Li Yufeng Yang Lijun Liu jinsong zhang Qing Wang Institute of Hydrobiology Jinan University Guangzhou 510632 China School of Environmental Science and Engineering Tongji University Shanghai 200092 China Shenzhen Water Group Shenzhen 518032 China School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

Biologically active carbon （BAC） system was set up in a water plant of South China during January to December 2007,to study the invertebrate community characteristics of BAC ***-seven invertebrate species were found,of which 28 belonging to *** operation could lead to an output of invertebrates in high abundances with the filtrate,and the maximum density could reach 5608 individuals/m *** abundances in the effluent water increased in 27-33 folds in comparison to the influent water during the sampling *** community succession had the following trend：filter-feeding animals → small benthic invertebrates → large benthic and resistant *** of large-sized invertebrates （copepod adult and oligochaete） at bigger-media column were significantly higher than that at small-media *** results implied the abundant species diversity of invertebrate in BAC *** relationship between invertebrate and biofilm still remain to be studied in detail.

关键词： biologically active carbon filter invertebrate community characteristics filter media

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Cache Coherency Design in Pentium Ⅲ SMP System

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Wuhan University Journal of Natural Sciences 2006年第2期11卷 360-364页

作者： LIU jinsong zhang Jiangling GU Xiwu Key Laboratory of Data Storage System Huazhong University of Science and Technology Wuhan 430074 Hubei China

This paper analyzes cache coherency mechanism from the view of system. It firstly discusses caehe-memory hierarchy of Pentium Ⅲ SMP system, including memory area distribution, cache attributes control and bus transaction. Secondly it analyzes hardware snoopy mechanism of P6 bus and MESI state transitions adopted by Pentium Ⅲ. Based on these, it focuses on how muhiprocessors and the P6 bus cooperate to ensure cache coherency of the whole system, and gives the key of cache coherency design.

关键词： snoop cache coherency MESI protocol P6bus Pentium Ⅲ SMP system

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High Strength Silicon Carbide Foams and Their Deformation Behavior

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Journal of Materials Science & Technology 2006年第2期22卷 269-272页

作者： Chong TIAN jinsong zhang Xiaoming CAO Qiang LIU Wanping HU Institute of Metal Research Chinese Academy of Sciences Shenyang 50016 China

Silicon carbide （SIC） foams with a continuously connected open-cell structure were prepared and characterized for their mechanical performance. The apparent densities of SiC foams were controlled between about 0.4 and 2.3 g/cm^3, with corresponding compressive strengths ranging from about 23 to 60 MPa and flexural strengths from about 8 to 30 MPa. Compressive testing of the SiC foams yielded stress-strain curves with only one linear-elastic region, which is different from those reported on ceramic foams in literature. This can possibly be attributed to the existence of filaments with fine, dense and high strength microstructures. The SiC and the filaments respond homogeneously to applied loading.

关键词： Silicon carbide foams Apparent density Strength Deformation behavior Linear-elastic behavior

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Heat shock response down-regulates IL-18 expression inthe murine macrophage cell line, RAW264.7

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Chinese Science Bulletin 2003年第8期48卷 780-785页

作者： WANG Yun LI Changlin WANG Xingyu zhang jinsong zhang Zongliang Department of Cell Biology The Third Military Medical UniversityChongqing 400038China Shanghai Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China

Heat shock response is a self-defense mecha-nism for protection of cells and organisms from a wide range of harmful stressors. Recent studies revealed that it is in-volved in the regulation of cytokines expression. IL-18 is an important cytokine in mediating immune response. We stud-ied LPS-induced IL-18 expression in heat shock treated RAW264.7 murine macrophages. Our results show that the heat shock response significantly inhibited the expression of LPS-induced pro-inflammatory cytokine IL-18. Further research on the down-regulation mechanism shows that this inhibitory effect is correlated to the great suppression of the binding activity of AP-1, which is a transcription factor binding to the promoter of IL-18 (-1120 to -1083) and regu-lates the transcription of IL-18. Meanwhile, we observed that the phosphorylation of JNK, which is AP-1 upstream kinase, was greatly decreased. These results confirmed that the down-regulation effect on IL-18 production in heat shock response is related to the suppression of the JNK/AP-1 sig-naling pathway.

关键词：热震反应巨噬细胞自卫机制 HSR 环境压力

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