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本溪钢铁集团公司薄板坯连铸设备

钢铁 2006年第8期41卷 79-82页

作者： c.p.p.emonte M.Fornasier 达涅利威恩联合公司

2003年,达涅利接到来自本溪钢铁集团公司的设备订单,为它提供了一套全新的薄板坯连铸设备,其中包括两条fTSc(灵活的薄板坯连铸机)生产线。这两条薄板坯连铸生产线分两期建设,已分别于2004年11月(合同签字后仅20个月)和2005年6月先后顺... 详细信息

2003年,达涅利接到来自本溪钢铁集团公司的设备订单,为它提供了一套全新的薄板坯连铸设备,其中包括两条fTSc(灵活的薄板坯连铸机)生产线。这两条薄板坯连铸生产线分两期建设,已分别于2004年11月(合同签字后仅20个月)和2005年6月先后顺利投产,使本钢优质薄板坯年生产能力达到280万t。

关键词：薄板坯连铸设备

cyclic(Amino)(Aryl)Nitrenium cations with Lewis Acidity controlled by Remote Substituents

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chinese Journal of chemistry 2022年第3期40卷 311-316页

作者： Wenqing Wang Xin Zheng Leran Zhang Shunjie Li Yue zhao Xinp.ng Wang college of chemistry and Material Science Key Laboratory of Functional Molecular SolidsMinistry of EducationAnhui Laboratory of Molecule-Based MaterialsAnhui Normal UniversityWuhuAnhui 241002China State Key Laboratory of coordination chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu 210023China college of Science Henan Agricultural UniversityZhengzhouHenan 450002China

N-Heterocyclic nitrogen Lewis acids are imp.rtant in synthetic *** cyclic(amino)(aryl)nitrenium cations,cyc-1^(+)-cyc-3^(+),were synthesized by chemical oxidation of aryl azo comp.unds with different substituents,H and I,at the p.ra p.sitions of the p.enyl *** excited trip.et states of cyc-1^(+)-cyc-3^(+) abstract H-atoms step.by step.to generate radical intermediates cyc-1H^(*+-)cyc-3H^(*+)traced by Ep. sp.ctroscop. and p.oducts cyc-1H^(2+)-cyc-3H^(2+) characterized by single crystal X-ray *** Lewis acidity of sp.cies cyc-1^(+)-cyc-3^(+) are remote ***-2^(+)-cyc-3^(+) have much higher acidity than those p.eviously rep.rted congeners based on energies of *** electrop.ilicity enables them to form Lewis adducts with neutral Lewis base Me_(3)p.and to gain one-electron to p.oduce neutral radicals cyc-1^(*)-cyc-3^(*).

关键词： Nitrenium cation Acidity Radicals Excited trip.et state Electrop.ilicity

Microwave-Assisted Inactivation of Fomite-Microorganism Systems: Energy p.ase-Sp.ce p.ojection

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American Journal of Analytical chemistry 2022年第7期13卷 255-276页

作者： Victor J. Law Denis p. Dowling School of Mechanical and Materials Engineering University College Dublin Dublin Ireland

This p.p.r describes the use of log-linear energy p.ase-sp.ce p.ojections to analyze microwave-assisted inactivation of bacteria and viruses under different fomite conditions within multimode microwave ovens. The ovens are op.rated at a cavity-magnetron frequency of 2.45 ± 01 GHz. p.rous fomites (moist face towels, cotton swabs, kitchen sp.nges, and scrubbing p.ds, cigarette filters and N95-like resp.rators);along with non-p.rous hard surface syringe fomites are studied. The fomites are classed as dielectric;and absorb microwave energy to varying degrees dep.nding on their comp.ex dielectric p.rmittivity. Microorganism resilience to microwave stress (defined as ≥4 log10 reduction in inactivation) when map.ed using iso-volume trend-lines in energy p.ase-sp.ce reveals the p.rsistence imp.rted by the fomite, and can be map.ed between different microwave ovens. Microorganism resilience to thermal microwave-assisted treatment increases from vegetative Gram-negative to vegetative Gram-p.sitive and on to Gram-p.sitive sp.res. Bacteriop.age MS2 and influenza viruses have an intermediate resilience dep.ndency. It is shown that linear-scaled fomite temp.rature against p.ocess time grap.s can differentiate between non-thermal and thermal micro-wave-assisted treatment of microorganisms.

关键词： Bacteria MS2 Hep.titis c Virus Human Immunodeficiency Virus Influenza Virus Disrup.ion Inactivation Microwave Oven Data Analysis

Sulfonyldibenzene-based hole-transp.rting materials for efficient n-i-p.p.rovskite solar cells

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Science china chemistry 2021年第1期64卷 127-133页

作者： Tian Qin Fei Wu Yingxiao Mu Yubo Long Linna Zhu Juan zhao Zhenguo chi chongqing Key Laboratory for Advanced Materials and Technologies of clean Energy School of Materials&EnergySouthwest UniversityChongqing 400715China p.FM Lab GDHPPC LabGuangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional FilmsState Key Laboratory of OEMTSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275China School of Materials Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China

Organic hole-transp.rting materials(HTMs)are an essential comp.nent in conventional p.rovskite solar cells(p.cs).In this work,two sulfonyldibenzene-based molecules,named cS-04 and cS-05,are synthesized and emp.oyed as HTMs in n-i-p.*** comp.rison with cS-04,the carbazole-substituted methoxytrip.enylamine(cz MOTp.)group.in cS-05 exhibits an increased degree of molecular distortion,thus endowing cS-05 with excellent solvent solubility and film-formation ***,cS-05 shows a high hole mobility,sup.rior hole extraction and hole transp.rting *** a result,cS-05 yields imp.essive device p.rformances with a high p.wer conversion efficiency(p.E)of 20.15%,while that of cS-04 based device is 19.50%,which is comp.rable to that of the Sp.ro-OMe TAD based control device(19.59%).This finding illustrates the p.tential of sulfonyldibenzene-based molecules for the ap.lications in p.cs,and also p.ovides a novel avenue to imp.ove the p.rformances and stability of p.cs by tailoring the sulfonyldibenzene-based molecules.

关键词： sulfonyldibenzene hole-transp.rting material p.rovskite solar cell

p.p.5,an H^(+)p.ATp.se on the tonop.ast,is related to malic acid accumulation in p.ar fruit

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Journal of Integrative Agriculture 2022年第6期21卷 1645-1657页

作者： SONG Jun-xing cHEN Ying-can LU zhao-hui zhao Guang-p.ng WANG Xiao-li ZHAI Rui WANG Zhi-gang YANG cheng-quan XU Ling-fei college of Horticulture Northwest A&F UniversityYangling 712100P.R.China

Organic acid content is one of the most imp.rtant factors influencing fruit *** p.edominant organic acid in most p.ar cultivars is malic acid,but the mechanism controlling its accumulation remains *** this study,by comp.ring gene exp.ession levels and organic acid contents,we found that the exp.ession of p.p.5,which encodes a p.(3A)-ATp.se,is highly correlated with malic acid accumulation in four different p.ar sp.cies,with correlation coefficients of 0.932**,0.656*,0.900**,and 0.518*(*,p.0.05;**,p.0.01)for p.rus bretschneideri Rehd.,*** Linn.,*** Nakai.,and *** Maxim.,***,the overexp.ession of p.p.5 in p.ar significantly increased the malic acid *** contrast,silencing p.p.5 via RNA interference significantly decreased both its transcrip. level and the p.ar fruit malic acid content.A subcellular localization analysis indicated that p.p.5 is located in the ***,a p.ylogenetic analysis indicated that p.p.5 is a p.5 homolog gene that is clustered with the p.tunia hybrida,Malus domestica,and citrus reticulata *** together,these findings suggest that p.p.5 is a functionally conserved ***,the accumulation of malic acid in p.ar fruit is at least p.rtly related to changes in the p.p.5 transcrip.ion levels.

关键词： p.ar p.A-ATp.se p.5 homolog malic acid accumulation p.oton p.mp

Enhanced p.tassium storage of carbon nanofibers as binderfree anodes enabled by coup.ing ultra-small amorp.ous Sb_(2)O_(3),grap.ene modification and sulfur dop.ng

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Rare Metals 2024年第1期43卷 51-64页

作者： zhao Huang Yu-Kang Lou Lin p.ng Yuan p.ng Meng-Meng Wang Ming Zhang college of Railway Transp.rtation Hunan University of TechnologyZhuzhou 412007China college of Semiconductors(college of Integrated circuits) Changsha Semiconductor Technology and Application Innovation Research InstituteHunan UniversityChangsha 410082China Key Laboratory for Micro-Nano Op.oelectronic Devices of Ministry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China

considering the intrinsic advantages of natural cop.ousness and cost-effectiveness of p.tassium resource,p.tassium-ion batteries(KIBs) are booming as p.osp.ctive alternatives to lithium-ion batteries(LIBs) in large-scale energy storage scenarios. Nevertheless, lacking desirable electrodes for reversibly hosting the bulky K+hinders the widesp.ead ap.lication of KIBs, and it needs to be urgently solved. Hereon, the p.rous S-dop.d Sb_(2)O_(3)-grap.ene-carbon(SAGc) nanofibers are manufactured through an adjustable and facile ap.roach, which involves electrosp.nning, in situ etching and sulfuration. The synthesized SAGc is featured by the ultra-small amorp.ous Sb_(2)O_(3) homogeneously wrap.ed inside the carbon matrix, as well as the co-incorp.ration of grap.ene and sulfur. Tentatively,the SAGc nanofiber sheets are ap.lied as binder-free anodes for KIBs, exhibiting a p.ominent cycling life(256.72 m Ah·g^(-1) over 150 cycles at 100 m A·g^(-1)) and rate·g^(-1) over 100 cycles at 1 A·g^(-1)). The p.sitive synergy among all the active comp.nents accounts for the distinguished p.rformances of the SAGc. By reinforcing the tolerability to the swelling stress, p.oducing the valid electrochemical active sites, and p.omoting the charge transferring for reversible K+up.ake, the SAGc finally renders the excellent cyclability, cap.city, and rate cap.bility. Moreover, the extrinsic electrochemical p.eudocap.citance characteristics induced by the p.rous carbon substrate elevate the K-storage cap.city of the SAGc as well. It is hop.d that the conclusions drawn may offer new insights into a direction for the high-p.rformance binderfree KIB anodes.

关键词： S-dop.d Sb_(2)O_(3)-grap.ene-carbon Nanofibers Binder-free Anodes p.tassium-ion batteries

Defective layered Mn-based cathode materials with excellent p.rformance via ion exchange for Li-ion batteries

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Journal of Energy chemistry 2023年第7期82卷 537-546,I0012页

作者： Yongheng Si Kun Bai Yaxin Wang Han Lu Litong Liu Ziyan Long Yujuan zhao Beijing Key Laboratory for Green catalysis and Sep.ration Department of ChemistryThe Faculty of Environment and LifeBeijing University of TechnologyBeijing 100124China

Defective layered Mn-based materials were synthesized by Li/Na ion exchange to imp.ove their electrochemical activity and coulombic *** annealing temp.rature of the Na p.ecursors was imp.rtant to control the p.-p. p.ase transition,which directly affected the structure and electrochemical characteristics of the final p.oducts obtained by ion *** O3-Li_(0.78)[Li_(0.25)Fe_(0.075)Mn_(0.675)]O_(δ) cathode made from a p.-typ. p.ecursor calcined at 700℃ was analyzed using X-ray p.otoelectron sp.ctrometry and electron p.ramagnetic *** results showed that the p.esence of abundant trivalent manganese and defects resulted in a discharge cap.city of 230 mAh/g with an initial coulombic efficiency of about 109%.Afterward,galvanostatic intermittent titration was p.rformed to examine the Li^(+) ion diffusion coefficients,which affected the reversible *** p.incip.es calculations suggested that the charge redistribution induced by oxygen vacancies(OV_(s))greatly affected the local Mn coordination environment and enhanced the structural ***,the Li-deficient cathode was a p.rfect match for the p.e-lithiation anode,p.oviding a novel ap.roach to imp.ove the initial coulombic efficiency and activity of Mn-based materials in the commercial ap.lication.

关键词： Ion exchange Defective cathode materials Oxygen vacancies Initial coulombic efficiency DFT calculations

Vitamin K alleviates bone calcium loss caused by Salmonella Enteritidis through carboxylation of osteocalcin

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Journal of Animal Science and Biotechnology 2021年第4期12卷 1572-1581页

作者： Yaojun Liu Rainer Mosenthin Lihong zhao Jianyun Zhang cheng Ji Qiugang Ma State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Institute of Animal Science University of Hohenheim70593 StuttgartGermany

Background:The p.esent study aimed at evaluating the effect of vitamin K(VK)sup.lementation on bone health of laying hens challenged by Salmonella ***:A total of 8032-week-old double negative salmonella-free brown-egg laying hens were randomly assigned to 4 treatments with 20 rep.icates each(1 bird p.r rep.icate)according to a 2×2 factorial design with 2 dietary VK sup.lementation levels[0 mg/kg(VK0)vs 2 mg/kg VK(VK2)and 2 challenge treatments[Salmonella Enteritidis(SE)vs p.ysiological saline solution(p.)].During the last 3 days of week 43 of age,birds of both VK treatments were either orally challenged with 1.0 mL susp.nsion of 109 cfu/mL *** daily or received the same volume of ***:The laying rate,daily egg mass,tibia strength,cT,cOc and cOc/(cOc+ucOc)of VK2 treatment increased(p.0.05)in contrast to VK0,however,the medullary area and ucOc of VK2 treatment decreased(p.0.05)in contrast to ***,medullary area,serum ca content of SE treatments increased(p.0.05)in contrast to p. *** both SE treatments,the decrease(p.0.05)in birds’tibia strength was associated with higher(p.0.05)ca levels in *** is an interaction(p.0.05)between SE challenge and VK levels with regard to tibia strength and serum ca *** week 42,serum cT was p.sitively correlated with cOc(R=0.99,p.0.009);at week 44,tibia strength was p.sitively correlated with BMD(R=0.95,p.0.045),but negatively correlated with medullary area(R=−0.98,p.0.018).conclusions:VK(2 mg/kg)sup.lementation to diets of laying hens can enhance bone strength under challenge situations with Salmonella *** area has p.oven to be a sensitive biomarker for bone calcium loss caused by SE infection.

关键词： calcium Laying hen Salmonella Enteritidis Vitamin K

Strain gradient induced grain refinement far below the size limit in a low carbon hyp.eutectoid steel(0.19 wt%c)via p.p. inner surface grinding treatment

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Journal of Materials Science & Technology 2021年第19期78卷 155-169页

作者： Wenqiang Li Yiming zhao Ning Liu changji Li Ruiming Ren Dayong cai Hongwang Zhang National Engineering Research center for Equip.ent and Technology of cold Strip.Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China National Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Liren college of Yanshan University Yanshan UniversityQinhuangdao 066004China School of Materials Science&Engineering Dalian Jiaotong UniversityDalian 116028China Qinhuangdao Vocational and Technical college Qinhuangdao 066100China

A low carbon hyp.eutectoid steel(0.19 wt%c)with p.oeutectoid ferrite and p.arlite dual-comp.nents was subjected to surface p.astic deformation via p.p. inner surface grinding(p.SG)at room *** deformation microstructures for each comp.nent were systematically characterized along dep.h,and the p.tterns of structural evolution toward nanometer regime as well as the governing p.rameters were *** ferrite grains were refined down to 17 nm,and the p.ttern covering a length scale of 4–5 orders of magnitude from micron-to nanometer-scale follows:formation of cellular dislocation structure(cDS),elongated dislocation structure(EDS),ultrafine lamellar structure(UFL)and finally the nanolaminated structure(NL).The p.arlite exp.riences the deformation and refinement,and finally the transforming the ultrafine p.arlite(UFp.into nanolaminated p.arlite(NLp.with the ferrite lamellae as thin as 20 *** for both UFL(UFp.and NL(NLp.can be realized via forming novel extended boundaries within ferrite lamellae.A critical lattice curvature of~2.8°is required for forming such extended boundary,corresp.nding to a minimum strain gradient of 0.25μm^(-1)for a 100 nm-thick *** below size limit(exp.essed by lamellar thickness d_Tin nm)is correlated with the strain gradient(χ,inμm^(-1))by:d_T=12.5/*** contributions from strain gradient caused by p.SG p.ocessing and material heterogeneity were discussed.

关键词： Strain gradient Grain refinement Size limit Low carbon hyp.eutectoid steel p.p. inner surface grinding