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Re-analysis of temperature dependent neutron capture rates and stellarβ-decay rates of^(95-98)Mo

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Chinese Physics C 2024年第9期48卷 142-149页

作者： Abdul Kabir Jameel-Un Nabi Muhammad Tahir Abdul Muneem Zain Ul Abideen Space and Astrophysics Research lab National Centre of GIS and Space ApplicationsDepartment of Space ScienceInstitute of Space TechnologyIslamabad 44000Pakistan University of Wah Quaid AvenueWah Cantt 47040PunjabPakistan Faculty of Engineering Sciences GIK Institute of Engineering Sciences and TechnologyTopi 23640Khyber PakhtunkhwaPakistan

The neutron capture rates and temperature dependent stellar beta decay rates of Mo isotopes are investigated within the framework of the statistical code TALYS v1.96 and the proton neutron quasi particle random phase approximation(pn-QRPA)*** Maxwellian average cross-section(MACS)and neutron capture rates for the^(95-98)Mo(n,γ)^(96-99)Mo radiative capture process are analyzed within the framework of the statistical code TALYS v1.96 based on the phenomenological nuclear level density model and gamma strength *** present model-based computations for the MACS are comparable to the existing measured *** sensitivity of stellar weak interaction rates to various densities and temperatures is investigated within the framework of the pn-QRPA *** attention is paid to the impact of thermally filled excited states in the decaying nuclei(^(95-98)Mo)on electron emission and positron capture ***,we compare the neutron capture rates and stellar beta decay *** is found that neutron capture rates are higher than stellar beta decay rates at both lower and higher temperatures.

关键词： cross-section TALYS nuclear level density decay rates capture rates

Effect of E-44 Epoxy Resin and Pyrolysis Temperature on the Adhesion Strength of SiBCN Ceramic

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Journal of Wuhan University of Technology(Materials Science) 2020年第1期35卷 81-86页

作者：马志波常森 SONG Xuemei LI Min WANG Kunjun LI Yongguo XU Xinming ZHANG Qiqi WANG Lei YU Rong LUAN Xin’gang CHENG Laifei Shaanxi Key lab of mems/NEMS Northwestern Polytechnical UniversityXi’an 710072China China Institute for Radiation Protection Department of Environment Engineering and TechnologyTaiyuan 030006China Key lab of Micro/Nano Systems for Aerospace Ministry of EducationXi’an 710072China Science and Technology on Thermo Structural Composite Materials laboratory Northwestern Polytechnical UniversityXi’an 710072China

An adhesive of the SiBCN ceramic was synthesized through the polymer derived ceramics(PDC)*** with higher adhesion strength and simpler process condition,the polyborosilazane(PSNB)was modified by E-44 epoxy *** E-44 epoxy resin was used to promote the oxidation process of SiBCN,in other words,to produce more amount of SiO2-B2O3 *** phase composition,elemental analysis,chemical bonds and microstructure were investigated by using X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and scanning electron microscope(SEM)*** E-44 modified adhesives were cured at 120℃in air for 2 h,and were pyrolyzed at 1200,1400,and 1500℃for 2 h in air,*** highest adhesion strength of the modified adhesive was up to 5.33,12.23,and 12.50 MPa after being heat treated at 1200,1400,and 1500℃,***,we proposed an adhesion model and revealed the adhesion mechanism of SiBCN ceramic.

关键词： SiBCN ceramic PDC route E-44 epoxy resin pyrolysis temperature SiO2-B2O3 glasses

Genetic evidence for asymmetric blocking of higher-order chromatin structure by CTCF/cohesin

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Protein & Cell 2019年第12期10卷 914-920页

作者： Yujia Lu Jia Shou Zhilian Jia Yonghu Wu Jinhuan Li Ya Guo Qiang Wu MOE Key lab of Systems Biomedicine Center for Comparative BiomedicineState Key Lab of Oncogenes and Related GenesShanghai Cancer InstituteJoint International Research Laboratory of Metabolic&Developmental SciencesInstitute of Systems BiomedicineXin Hua HospitalShanghai Jiao Tong UniversityShanghai 200240China present address:Ming Wai Lau Centre for Reparative Medicine Karolinska InstitutetHong KongChina MRC London Institute of Medical Sciences Imperial College LondonLondon W120NNUK

Dear Editor,Similar to higher-order folding of polypeptide chains into functional proteins,linear DNA molecules are spatially folded in a hierarchical and dynamic manner into three-dimensional(3D)functional chromatin structures in eukaryotic nuclei(Huang and Wu,2016;Rowley and Corces,2018).This dynamic folding is closely related to many nuclear processes such as DNA replication and repair,chromosomal translocation,recombination,and segregation,as well as RNA transcription,splicing,and *** particular,dynamic long-distance chromatin looping interactions,which result in close spatial contacts between distal enhancers and target promoters,are thought to play a role in controlling precise spatiotemporal as well as cell-type specific gene expression during animal development(Rowley and Corces,2018).Mammalian genomes contain numerous noncoding regulatory elements that regulate these dynamic long-distance chromatin looping interactions.

关键词： asymmetric precise chains

Bioinspired Surfaces Derived from Acoustic Waves for On-Demand Droplet Manipulations

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Research 2024年第3期2023卷 613-620页

作者： Zhuhao Wu Lingyu Sun Hanxu Chen Yuanjin Zhao Department of Rheumatology and Immunology Nanjing Drum Tower HospitalSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China Oujiang laboratory(Zhejiang lab for Regenerative Medicine Vision and Brain Health)Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang 325001China Chemistry and Biomedicine Innovation Center Nanjing UniversityNanjing 210023China.

The controllable manipulation and transfer of droplets are fundamental in a wide range of chemical reactions and even life processes. Herein, we present a novel, universal, and straightforward acoustic approach to fabricating biomimetic surfaces for on-demand droplet manipulations like many natural creatures. Based on the capillary waves induced by surface acoustic waves, various polymer films could be deformed into pre-designed structures, such as parallel grooves and grid-like patterns. These structured and functionalized surfaces exhibit impressive ability in droplet transportation and water collection, respectively. Besides these static surfaces, the tunability of acoustics could also endow polymer surfaces with dynamic controllability for droplet manipulations, including programming wettability, mitigating droplet evaporation, and accelerating chemical reactions. Our approach is capable of achieving universal surface manufacturing and droplet manipulation simultaneously, which simplifies the fabrication process and eliminates the need for additional chemical modifications. Thus, we believe that our acoustic-derived surfaces and technologies could provide a unique perspective for various applications, including microreactor integration, biochemical reaction control, tissue engineering, and so on.

关键词： straight eliminate acoustics

A vectorial model for the nonlinear gradient force exerted on metallic Rayleigh nanoparticles

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Chinese Optics Letters 2024年第2期22卷 207-213页

作者：朱政张聿全闵长俊 Aurèle J.LAdam H.Paul Urbach 袁小聪 Research Center for Humanoid Sensing Research Institute of Intelligent SensingZhejiang LabHangzhou 311100China Nanophotonics Research Center Institute of Microscale Optoelectronics&State Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China Optics Research Group ImPhys DepartmentFaculty of Applied SciencesDelft University of TechnologyDelft 2628 CJThe Netherlands

Optical tweezers have proved to be a powerful tool with a wide range of *** gradient force plays a vital role in the stable optical trapping of *** scalar method is convenient and effective for analyzing the gradient force in traditional optical ***,when the third-order nonlinear effect of the nano-object is stimulated,the scalar method cannot adequately present the optical response of the metal nanoparticle to the external optical ***,we propose a theoretical model to interpret the nonlinear gradient force using the vector *** combining the optical Kerr effect,the polarizability vector of the metallic nanoparticle is derived.A quantitative analysis is obtained for the gradient force as well as for the optical potential *** vector method yields better agreement with reported experimental *** suggest that this method could lead to a deeper understanding of the physics relevant to nonlinear optical trapping and binding phenomena.

关键词： gradient forces nonlinear effect metallic nanoparticles

Au nanoparticles decorated graphene/nickel foam nanocomposite for sensitive detection of hydrogen peroxide

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Journal of Materials Science & Technology 2017年第3期33卷 246-250页

作者： Xiaojuan Wang Xinli Guo Jian Chen Chuang Ge Hongyi Zhang Yuanyuan Liu Li Zhao Yao Zhang Zengmei Wang Litao Sun Jiangsu Key laboratory of Advanced Metallic Materials School of Materials Science and Engineering Southeast University Nanjing 211189 China SEU-JSRI Joint Research Center for the Application of Advanced Carbon Materials Nanjing 210096 China Key lab of mems of Ministry of Education School of Electronic Science and Engineering Southeast University Nanjing 210096 China

The Au nanoparticles decorated graphene（AuNPs@Gr）/nickel foam（Gr/NiF） nanocomposite（AuNPs@Gr/NiF） was prepared by chemical vapor deposition followed by electrophoretic deposition of AuNPs on Gr/NiF. The morphology, microstructure and sensing performance of the as-prepared AuNPs@Gr/NiF nanocomposite were characterized and measured, respectively by scanning electron microscope, transmission electron microscope, ultraviolet visible spectroscopy and chemical workstation. The asprepared AuNPs@Gr/NiF nanocomposite was used as the electrode to construct a chemical sensor for the detection of hydrogen peroxide（H2O2）. The results showed that the AuNPs distributed homogenously and stably on the surface of Gr/NiF. The chemical sensor exhibits a sensitive and selective performance to the detection of H2O2.

关键词： Au nanoparticles Graphene Nickel foam Nanocomposite Hydrogen peroxide(H2O2)

The Arabidopsis Floral Repressor BFT DelaysFlowering by Competing with FT for FD Bindingunder High Salinity

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Molecular Plant 2014年第2期7卷 377-387页

作者： Jae Yong Ryu Hyo-Jun Lee Pil Joon Seo Jae-Hoon Jung Ji Hoon Ahn Chung-Mo Park Department of Chemistry Seoul National University Seoul 151-742 Korea present address: Department of Chemistry Chonbuk National University Jeonju 561-756 Korea The Sainsbury laboratory University of Cambridge Cambridge UK Creative Research Initiatives Division of Life Sciences Korea University Seoul 136-701 Korea PGBI Seoul National University Seoul 151-742 Korea

Soil salinity is one of the most serious agricultural problems that significantly reduce crop yields in the aridand semi-arid regions. It influences various phases of plant growth and developmental processes, such as seed germina-tion, leaf and stem growth, and reproductive propagation. Salt stress delays the onset of flowering in many plant spe-cies. We have previously reported that the Arabidopsis BROTHER OF FT AND TFL1 （BFT） acts as a floral repressor undersalt stress. However, the molecular mechanisms underlying the BFT function in the salt regulation of flowering inductionis unknown. In this work, we found that BFT delays flowering under high salinity by competing with FLOWERING LOCUST （FT） for binding to the FD transcription factor. The flowering time of FD-deficient fd-2 mutant was insensitive to highsalinity. BFT interacts with FD in the nucleus via the C-terminal domain of FD, which is also required for the interactionof FD with FT, and interferes with the FT-FD interaction. These observations indicate that BFT constitutes a distinct saltstress signaling pathway that modulates the function of the FT-FD module and possibly provides an adaptation strategythat fine-tunes photoperiodic flowering under high salinity.

关键词： Arabidopsis BFT FD flowering time FT salt stress

Manganese vanadium oxide composite as a cathode for high-performance aqueous zinc-ion batteries

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Chinese Chemical Letters 2024年第9期35卷 491-495页

作者： Jiayu Bai Songjie Hu Lirong Feng Xinhui Jin Dong Wang Kai Zhang Xiaohui Guo Key lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Shaanxi Key Laboratory for Carbon Neutral TechnologyThe College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069China Sustainable Materials and Chemistry Dept.Wood Technology and Wood-based CompositesUniversity of GoettingenWilhelmsplatz 1(Aula)37073 GötingenGermany

The development of clean renewable energy and energy storage devices is of great significance under the present energy crisis and environmental pollution *** zinc-ion battery(ZIB)has become one of the most promising energy storage devices due to its high capacity,safety and low ***,the application of ZIB cathode is usually limited by low capacity and poor ***,we propose a novel heterostructure MnO/MnV_(2)O_(4)composite material composed of MOF derivatives and spinel with dual active components as cathode for *** from substantial framework of MOF derivatives and the synergistic effect of heterostructures,MnO/MnV_(2)O_(4)exhibits excellent rate performance(342 m Ah/g at 0.1 A/g,261 mAh/g at 15 A/g)and cycling performance(198.9 mAh/g at 10 A/g after 2000 cycles)in3 mol/L Zn(CF_(3)SO_(3))*** work extends the range of developing high-performance cathodes for ZIBs under high current density and is expected to enlighten the optimization of commercial energy storage devices.

关键词： Metal organic framework Manganese oxides Heterostructure Cathode Zinc ion battery

Microanalysis of Plant Cell Wall Polysaccharides

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Molecular Plant 2009年第5期2卷 922-932页

作者： Nicolai Obel Veronika Erben Tatjana Schwarz Stefan Kuhnel Andrea Fodor Markus Pauly Max-Planck-lnstitut for Molecular Plant Physiology Am Muhlenberg 1 14476 Golm Potsdam Germany present address: European Patent Office Erhardtstrasse 27 Munich Germany Helmhotz Center Munich Institute of Biological and Medical Imaging Ingolstaedter Landstrass. 1 85764 Neuherberg Germany ageningen University Department of Agrotechnology and Food Sciences Laboratory of Food Chemistry Bomenweg 2 6703 HD Wageningen The Netherlands DOE Plant Research lab. Michigan State University East Lansing MI 48864 USA

Oligosaccharide Mass Profiling （OLIMP） allows a fast and sensitive assessment of cell wall polymer structure when coupled with Matrix Assisted Laser Desorption Ionisation Time Of Flight Mass Spectrometry （MALDI-TOF MS）. The short time required for sample preparation and analysis makes possible the study of a wide range of plant organs, revealing a high degree of heterogeneity in the substitution pattern of wall polymers such as the cross-linking glycan xyloglucan and the pectic polysaccharide homogalacturonan. The high sensitivity of MALDI-TOF allows the use of small amounts of samples, thus making it possible to investigate the wall structure of single cell types when material is collected by such methods as laser micro-dissection. As an example, the analysis of the xyloglucan structure in the leaf cell types outer epidermis layer, entire epidermis cell layer, palisade mesophyll cells, and vascular bundles were investigated. OLIMP is amenable to in situ wall analysis, where wall polymers are analyzed on unprepared plant tissue itself without first isolating cell walls. In addition, OLIMP enables analysis of wall polymers in Golgi-enriched fractions, the location of nascent matrix polysaccharide biosynthesis, enabling separation of the processes of wall biosynthesis versus post-deposition apoplastic metabolism. These new tools will make possible a semi-quantitative analysis of the cell wall at an unprecedented level.

关键词： Carbohydrate metabolism xyloglucan mass spectrometry cell expansion cell walls Arabidopsis laser microdissection.