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Recent advances in catalytic systems for CO_(2) conversion to substitute natural gas(SnG):Perspective and challenges

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Journal of Energy Chemistry 2021年第11期30卷 377-407,I0008页

作者： I.Hussain A.A.Jalil n.S.Hassan M.Y.S.Hamid Department of Chemistry Faculty of ScienceUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia School of Chemical and Energy Engineering Faculty of EngineeringUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia Centre of Hydrogen Energy Institute of Future Energy81310 UTM Johor BahruJohorMalaysia

It has been well established that carbon dioxide(CO_(2))is one of the main greenhouse gasses and a leading driver of climate *** chemical conversion of CO_(2) to substitute natural gas(SnG)in the presence of renewable hydrogen is one of the most promising solutions by a well-known process called CO_(2) *** have been comprehensive efforts in developing effective and efficient CO_(2) methanation catalytic ***,the choice of competitive and stable catalysts is still a monumental obstruction and a great challenge towards the commercialization and industrialization of CO_(2) *** is necessary to emphasize the critical understandings of intrinsic and extrinsic interactions of catalyst components(active metal,support,promoter,etc.)for enhanced catalytic performance and stability during CO_(2) *** study reviews the up-to-date developments on CO_(2) methanation catalysts and the optimal synergistic relationship between active metals,support,and promoters during the catalytic *** existing catalysts and their novel properties for enhanced CO_(2) methanation were elucidated using the state-of-the-art experimental and theoretical *** selection of an appropriate synthesis method,catalytic activity for CO_(2) methanation,deactivation of the catalysts,and reaction mechanisms studies,have been explicitly compared and ***,future efforts should be directed towards the sustainable developments of catalytic configurations for successful industrial applications of CO_(2) utilization to SnG using CO_(2) methanation.

关键词： CO_(2)utilization CO_(2)methanation SnG Catalytic systems Deactivation Mechanism

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Recursive formulations for the method of reverberation-ray matrix and the application

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Science China(Physics,Mechanics & Astronomy) 2009年第2期52卷 293-302页

作者： ZHU Jun CHEn WeiQiu YE GuiRu lü ChaoFeng Department of Civil Engineering Zhejiang UniversityHangzhou 310027China

A recursive formulation is proposed for the method of reverberation-ray matrix (MRRM) to exactly analyze the free vibration of a multi-span continuous rectangular Kirchhoff plate, which has two oppo- site simply-supported edges. In contrast to the traditional MRRM, numerical stability is achieved by using the present new formulation for high-order frequencies or/and for plates with large span-to-width ratios. The heavy computational cost of storage and memory are also cut down. An improved recursive formulation is further proposed by modifying the iterative formula to reduce the matrix inversion op- erations. numerical examples are finally given to demonstrate the effectiveness and efficiency of the proposed recursive formulae.

关键词： method of reverberation-ray matrix recursive formulation free vibration continuous Kirchhoff plate

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Tectonic Evolution of the Wanan Basin,Southwestern South China Sea

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Acta Geologica Sinica(English Edition) 2014年第4期88卷 1120-1130页

作者： lü Caili ZHAnG Gongcheng YAO Yongjian WU Shiguo CnOOC Research Institute Postdoctoral research Center China University of Petroleum (Beijing) Guangzhou Marine Geological Survey Key laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of Sciences

Quantitative studies on the extension and subsidence of the Wanan Basin were carried out based on available seismic and borehole data together with regional geological data. Using balanced cross-section and backstripping techniques, we reconstructed the stratigraphic deposition and tectonic evolution histories of the basin. The basin formed from the Eocene and was generally in an extensional/transtensional state except for the late Miocene local compressoin. The major basin extension ocurred in the Oligocene and Early Miocene （before -16.3 Ma） and thereafter uniform stretch in a smaller rate. The northern and middle basin extended intensely earlier during 38.6-23.3 Ma, while the southern basin was mainly stretched during 23.3-16.3 Ma. The basin formation and development are related to alternating sinistral to dextral strike-slip motions along the Wanan Fault Zone. The dominant dynamics may be caused by the seafloor spreading of the South China Sea and the its peripheral plate interaction. The basin tectonic evolution is divided into five phases： initial rifting, main rifting, rift-drift transition, structural inversion, and thermal subsidence.

关键词： tectonic evolution stretch factor Wanan Basin South China Sea

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InFlUEnCE OF lOCAl BRITTlE ZOnE On THE FRACTURETOUGHnESS OF HIGH-STREnGTH lOW-AllOYEDMUlTIPASS WElD METAlS

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Acta Metallurgica Sinica(English letters) 1998年第2期11卷 87-92页

作者： Z.l.Zhou S.H.liu Dalian Railway Inst Dalian China

In this paper, toughness properties and microstructurc of low-alloyed multipass welds with yield strength above 700MPa have 6een studied using the weld thermal simulation and throughout thickness CTOD fracture mechanics tests. Impact testing of thermal simulated specimens showed that the primary weld metal and the fine gmmed weld metal had good toughness, while the coarse grained weld metal had the lowest toughness value as the local brittle zone (lBZ) in multipass weld metals. Cleavage fracture in CTOD testing of thick multipass weld metals was initiated from martensite-austenite (MA) phases in the lBZ. MA phases were distributed at the prior austenite grain boundaries and around ferrite grains. As the size of the local brittle zone along the fatigue crack front increases, CTOD frncture toughness of multipass weld metals decreases. The weakest link theory was used to evaluate effect of the local brittle zone on fracture toughness of thick multipass weld metals. The estimated curves agree well with the eaperimental data.

关键词： multipass weld metal local brittle zone weld thermal simulation CTOD fracture toughness

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DOCK8 regulates signal transduction events to control immunity

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Cellular & Molecular Immunology 2017年第5期14卷 406-411页

作者： Conor J Kearney Katrina l Randall Jane Oliaro Immune Defence laboratory Cancer Immunology Division The Peter MacCallum Cancer Centre East Melbourne Victoria 3002 Australia Sir Peter MacCallum Department of Oncology The University of Melbourne Parkville Victoria 3052 Australia Department of Immunology and Infectious Disease The John Curtin School of Medical Research Australian National University Acton Australian Capital Territory 2601 Australia Australian national University Medical School Australian National University Acton Australian Capital Territory 2605 Australia

Genetic mutations in the gene encoding DOCK8 cause an autosomal recessive form of hyper immunoglobulin E syndrome （AR-HIES）, referred to as DOCK8 deficiency. DOCK8 deficiency in humans results in the onset of combined immunodeficiency disease （CID）, clinically associated with chronic infections with diverse microbial pathogens, and a predisposition to malignancy. It is now becoming clear that DOCK8 regulates the function of diverse immune cell sub-types, particularly lymphocytes, to drive both innate and adaptive immune responses. Early studies demonstrated that DOCK8 is required for lymphocyte survival, migration and immune synapse formation, which translates to poor pathogen control in the absence of DOCK8. However, more recent advances have pointed to a crucial role for DOCK8 in regulating the signal transduction events that control transcriptional activity, cytokine production and functional polarization of immune cells. Here, we summarize recent advances in our understanding of DOCK8 function, paying particular attention to an emerging role as a signaling intermediate to promote immune responses to diverse external stimuli.

关键词： DOCK8 immunodeficiency lymphocytes nK Cells signal transduction

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A proteomics study to explore the role of adsorbed serum proteins for PC12 cell adhesion and growth on chitosan and collagen/chitosan surfaces

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Regenerative Biomaterials 2018年第5期5卷 261-273页

作者： Xiaoying lü Heng Zhang Yan Huang Yiwen Zhang State Key laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096P.R.China SQ Medical Device Co. Ltd.Nanjing 210008P.R.China

The aim of this article is to apply proteomics in the comparison of the molecular mechanisms of PC12 cell adhesion and growth mediated by the adsorbed serum proteins on the surfaces of chitosan and collagen/chitosan ***,the chitosan and the collagen/chitosan films were prepared by spin coating;and their surface morphologies were characterized by scanning electron microscopy,X-ray energy dispersive spectroscopy,contact angle measurement and Fourier transform infrared ***,cell proliferation experiments on two materials were performed and the dynamic curves of protein adsorption on their surfaces were ***,proteomics and bioinformatics were used to analyze and compare the adsorbed serum proteins on the surfaces of two biomaterials;and their effects on cell adhesion were *** results showed that the optimum concentration of chitosan film was 2%w/*** compared with chitosan film,collagen/chitosan film promoted the growth and proliferation of PC12 cells more *** the dynamic curves showed no significant difference in the total amount of the adsorbed proteins on both surfaces,proteomics and bioinformatics analyses revealed a difference in protein types:the chitosan surface adsorbed more vitronectin whereas collagen/chitosan surface adsorbed more fibronectin 1 and contained more cell surface receptor binding sites and more leu-Asp-Val sequences in its surface structure;the collagen/chitosan surface were more conducive to promoting cell adhesion and growth.

关键词： chitosan and collagen/chitosan film cell adhesion and growth protein adsorption proteomics/bioinformatics

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Jasmonates differentially affect interconnected signal-transduction pathways of Pieris rapae-induced defenses in Arabidopsis thaliana

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Insect Science 2011年第3期18卷 249-258页

作者： Tjeerd A.l. Snoeren Colette Broekgaarden Marcel Dicke laboratory of Entomology Wageningen UniversityWageningen University and Research Centre 6708PB Wageningen the Netherlands Plant Research International Wageningen University and Research Centre 6708PB Wageningen the Netherlands

The jasmonic acid （JA） pathway is the main signal-transduction pathway induced by insect folivory. Mutant plants affected in the jasmonate pathway （18：0 and/or 16：0-oxylipin routes） were studied to assess the effects of JA and its oxylipin intermediates 12-oxophytodienoic acid （OPDA） and dinor-OPDA （dnOPDA） on interconnected signal- transduction pathways that underlie induced defenses in Arabidopsis. Our data show that the oxylipin jasmonates dnOPDA, OPDA and JA have different roles in defense signaling induced after feeding by the chewing-biting caterpillar Pieris rapae. Jasmonic acid, and not OPDA or dnOPDA, is the major signaling compound required for the induction of the defense-related genes lOX2 （lipo：~vgenase 2）, OPR3 （12-Oxophytodienoate reductase 3）, ACX1 （Acyl-CoA oxidase 1） and PAl1 （Phenvlalanine ammonia-lyase 1）. Monitoring PAl1 transcript levels clearly showed that accumulation of JA upon P rapae feeding results in the induction of the salicylic acid pathway. Furthermore, JA is the major signaling compound required for the P rapae-induced expression of the defense-related gene HPl1 （Hydroperoxide lyase 1）. The jasmonate dnOPDA influences the induction of the HPk- branch as well, yet its effect is antagonistic to the effect of JA. Our data show that these jasmonates may be used to fine-tune Arabidopsis＇ herbivore-induced responses in terms of the HPl-branch from the oxylipin pathway.

关键词： gene transcript level herbivory lepidoptera mutants oxylipin qRT-PCR

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ＣＯＭＰＬＥＸＩＴＹＯＦＬＡＲＧＥＴＩＭＥＢＥＨＡＶＩＯＵＲＯＦＥＶＯＬＵＴＩＯＮＥＱＵＡＴＩＯＮＳＷＩＴＨＢＯＵＮＤＥＤＤＡＴＡ

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Chinese Annals of Mathematics,Series B 2002年第2期23卷 293-310页

作者： J.l.VZQUEZ E.ZUAZUA Departamento de Matematicas Universidad AutonomaDepartamento de Matematica AplicadaUniversidadComplutense 28049MadridSpain28040 M

The authors study the asymptotic behaviour of solutions of the heat equation and a number of evolution equations using scaling techniques. It is proved that in the framework of bounded data stabilization need not occur and the general asymptotic behaviour is complex. This behaviour reflects for large times, even on compact sets, the complexity of the initial data at infinity.

关键词： Asymptotic behaviour Scaling Omega-limit Heat equation Hyperbolic conservation laws

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Viruses and Virus-like Protein Assemblies--Chemically Programmable nanoscale Building Blocks

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nano Research 2009年第5期2卷 349-364页

作者： l.Andrew lee Zhongwei niu Qian Wang department of chemistry&biochemistry and nanocenter university of south carolina631 sumter streetcolumbiasc 29208usa

Supramolecular proteins are generated using a limited set of twenty amino acids,but have distinctive functionalities which arise from the sequential arrangement of amino acids configured to exquisite three-dimensional ***,virus-like particles,ferritins,enzyme complexes,cellular micro-compartments,and other supramolecular protein assemblies exemplify these systems,with their precise arrangements of tens to hundreds of molecules into highly organized scaffolds for nucleic acid packaging,metal storage,catalysis or sequestering reactions at the nanometer *** versatile protein systems,dubbed as bionanoparticles(BnPs),have attracted materials scientists to seek new opportunities with these pre-fabricated templates in a wide range of nanotechnology-related ***,we focus on some of the key modification strategies that have been utilized,ranging from basic protein conjugation techniques to more novel strategies,to expand the functionalities of these multimeric protein ***,in combination with molecular cloning and sophisticated chemistries,these BnPs are being incorporated into many applications ranging from functional materials to novel biomedical drug designs.

关键词： Bionanoparticles virus bioconjugation nanomaterials bioimaging drug delivery

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The Southern Annular Mode(SAM) in PMIP2 Simulations of the last Glacial Maximum

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Advances in Atmospheric Sciences 2014年第4期31卷 863-878页

作者： Seong-Joong KIM l Junmei Baek-Min KIM Korea Polar Research Institute KORDI Chinese Academy of Meteorological Sciences

The increasing trend of the Southern Annular Mode （SAM） in recent decades has influenced climate change in the Southem Hemisphere （SH）.How the SAM will respond increased greenhouse gas concentrations in the future remains *** the variability of the SAM in the past under a colder climate such as during the last Glacial Maximum （lGM） might provide some understanding of the response of the SAM under a future warmer *** analyzed the changes in the SAM during the lGM in comparison to pre-industrial （PI） simulations using five coupled ocean-atmosphere models （CCSM,FGOAlS,IPSl,MIROC,HadCM） from the second phase of the Paleoclimate Modelling Intercomparison Project （PMIP2）.In CCSM,MIROC,IPSl,and FGOAlS,the variability of the simulated SAM appears to be reduced in the lGM compared to the PI simulations,with a decrease in the standard deviation of the SAM ***,four out of the five models suggest a weaker SAM amplitude in the lGM consistent with a weaker SH polar vortex and westerly winds found in some proxy records and model *** weakening of the SAM in the lGM was associated with an increase in the vertical propagation of Rossby waves in southern high latitudes.

关键词： Southern Annular Mode last Glacial Maximum PMIP2 Southern Hemisphere westerly winds

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