检索结果-南通市图书馆

A New Approach for the Calculation of Slope Failure Probability with Fuzzy Limit-State Functions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fluid Dynamics & Materials Processing 2025年第1期21卷 141-159页

作者： Jianing Hao Dan Yang Guanxiong Ren Ying Zhao Rangling Cao Department of Engineering Management Sichuan College of Architectural TechnologyDeyang61800China Department of Transport and Municipal Engneering Sichuan College of Architectural TechnologyDeyang61800China Department of Basic Teaching Sichuan College of Architectural TechnologyDeyang61800China sichuan Hongye co.struction Software co. Ltd.Chengdu610081China

This study presents an innovative approach to calculating the failure probability of slopes by inco.porating fuzzylimit-state functions,a method that significantly enhances the accuracy and efficiency of slope stability *** traditional probabilistic techniques,this approach utilizes a least squares support vector machine(LSSVM)optimized with a grey wolf optimizer(GWO)and K-fold cross-validation(CV)to approximate the limit-statefunction,thus reducing co.putational *** novelty of this work lies in its application to one-dimensional(1D),two-dimensional(2D),and three-dimensional(3D)slope models,demonstrating its versatility andhigh *** proposed method co.sistently achieves error margins within 3%of Monte Carlo simulation(MCS)results,while substantially reducing co.putation time,particularly for 2D and 3D *** makes theapproach highly practical for real-world engineering ***,by applying fuzzy mathematics tohandle uncertainties in geotechnical properties,the method offers a more realistic and co.prehensive understandingof slope *** water is the main factor influencing the stability of slopes,this aspect is investigatedby calculating the phreatic line after the change in water *** examples are used to show that the failureprobability of a slope under water wading co.dition can increase by more than 20%(increase rates in 1D,2D and3D co.ditions being 25%,27%and 31%,respectively)co.pared with the natural *** influence ofdiverse fuzzy membership functions—linear,normal,and Cauchy—on failure probability is also *** not only provides a strategy for better calculation of the slope failure probability but also pioneers theintegration of co.putational intelligence,fuzzy logic and fluid-dynamics in geotechnical engineering,presentingan innovative and efficient tool for slope stability analysis.

关键词： Least Squares Support Vector Machine(LSSVM) Grey Wolf Optimizer(GWO) slope stability analysis fuzzy set theory failure probability estimation

Accelerating homogenization kinetics and enhancing hot-workability of as-cast nickel-based superalloy via prior hot-deformation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2025年第1期32卷 215-226页

作者： Jia-jun Chen Yang Zhou Hao-ran Han Xian-guang Zhang Goro Miyamoto Ping-mei Tang Dong-ping Xiao Jian-hui Fu Peng Shi Yi-wu Pei Jian Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Eco.ogical Engineering University of Science and Technology BeijingBeijing 100083China Chengdu Advanced Metal Materials Industrial technology Institute co. Ltd.Chengdu 610300SichuanChina Institute for Materials Research Tohoku UniversitySendai 980-8577Aoba-KuJapan

Enhancing homogenization efficiency and hot-workability is the key issue for wrought superalloys in the industry.A novel approach for simultaneous accelerating the homogenization kinetics and improving hot-workability via a simple way of prior hot-deformation was proposed,which was not widely accepted for wrought *** homogenization efficiency is increased by 40%-70%via performing 10%-20%prior *** theoretical and experimental analyses revealed that the increment in homogenization efficiency is mainly attributed to the decrease in interdendritic-segregation spacing,and thus the necessary diffusion distance,rather than that of *** addition,dynamic and static recrystallizations occurred during the prior hot-deformation and diffusion-annealing processes,and the grains were significantly refined even after the ***,the size of the precipitates was refined as *** enhanced the hot-workability of the homogenized ingot for the subsequent co.ging process.

关键词： Nickel-based superalloy Homogenization kinetics Prior hot-deformation Grain size Hot workability

Effect of initial microstructure on microstructure evolution and mechanical properties of 0.12C martensitic steels during quenching and tempering

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2025年第1期32卷 260-269页

作者： Ya-ru Wang Zi-yong Hou He Yang Jun Zhao Zhi-yuan Chang Fan-mao Meng Ling Zhang Gui-lin Wu Xiao-xu Huang State Key Laboratory of Vanadium and Titanium Resource co.prehensive Utilization Panzhihua 617000SichuanChina State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced FerrometallurgySchool of Materials Science and EngineeringShanghai UniversityShanghai 200444China International Joint Laboratory for Light Alloys(Ministry of Education) College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Institute of Steel technology for Automobile and Household Appliance Pangang Group Co.Ltd.Panzhihua 617000SichuanChina ATB Motor(Shanghai)co. Ltd.Keen International CenterShanghai 200041China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China

The microstructure evolution and mechanical properties of a Fe-0.12C-0.2Si-1.6Mn-0.3Cr-0.0025B(wt.%)steel with different initial microstructures,i.e.,hot rolled(HR)and co.d rolled-annealed(CRA),were studied through optical microsco.y,scanning electron microsco.y,electron channeling co.trast imaging,microhardness and room temperature uniaxial tensile *** water quenching from 930℃ to room temperature,a fully martensitic microstructure was obtained in both as-quenched HR and CRA specimens,which shows a microhardness of 480±5 HV,and no significant difference in microstructure and microhardness was *** test results show that the product of tensile strength and total elongation(UTS×TE)of the as-quenched HR specimen,i.e.,24.1 GPa%,is higher than that of the as-quenched CRA specimen,i.e.,18.9 GPa%.While,after being tempered at 300℃,the martensitic microstructures and mechanical properties of the two as-quenched specimens change significantly due to the synergy role of the matrix phase softening and the precipitation *** the maximum UTS×TE,it is 18.9 GPa%obtained in the as-quenched CRA one,while that is 24.4 GPa%obtained in the HR specimen after tempered at 300℃ for 5 min.

关键词： Initial microstructure Lath martensite Quenching Tempering Mechanical property

Targeting ASK1 by CS17919 alleviates kidney-and liver-related diseases in murine models

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Models and Experimental Medicine 2025年第1期8卷 102-113页

作者： Guoqiang Liao Qianjiao Yang Xuhua Mao Yiru Zhao Beizhong Chen Kun Zhang Yu Zhang Ping Zhang Zhengli Chen Shengjian Huang Chengdu Chipscreen Pharmaceutical co.p. Ltd.ChengduSichuanP.R.China Laboratory of Experimental Animal Disease Model College of Veterinary MedicineSichuan Agricultural UniversityChengduSichuanP.R.China Shenzhen Chipscreen Biosciences co. Ltd.ShenzhenGuangdongP.R.China

Background:Apoptosis signal-regulating kinase 1(ASK1)is a MAP3K kinase in the MAPK signaling pathway activated by stressors and triggers downstream biological effects such as inflammation and apoptosis;therefore,inhibition of ASK1 kinase ac-tivity can protect cells from pathological *** this study,we designed and synthe-sized a novel selective ASK1 inhibitor,CS17919,and investigated its pharmaco.ogical effects in various animal models of metabolic ***:First,we validated the ability of CS17919 to inhibit ASK1 in vitro and then tested the safety profile of CS17919 in cell lines co.pared with Selonsertib(GS-4997),a phase III ASK1 *** then co.ducted pharmaco.inetic(PK)studies in ***,we tested the in vivo efficacy of CS17919 in murine models of chronic kidney disease(CKD)and non-alco.olic steatohepatitis(NASH).Results:co.pared to GS-4997,CS17919 demonstrated co.parable inhibition of ASK1 in vitro,exhibited lower toxicity,and provided greater protection in palmitic acid-treated LO2 ***17919 also showed pronounced pharmaco.inetic prop-erties such as a high plasma *** the unilateral ureteral obstruction model(UUO),CS17919 and GS-4997 preserved kidney function and showed a non-significant tendency to alleviate kidney *** the diabetic kidney disease(DKD)model,CS17919 significantly improved serum creatinine and glomerular *** the NASH model,the co.bination of CS17919 and a THRβagonist(CS27109)was found to significantly improve liver inflammation and substantially reduced liver ***:CS17919 showed cell protective,anti-inflammatory,and antifibrotic ef-fects in vitro and in vivo,suggesting its therapeutic potential for metabolic-related kidney and liver diseases.

关键词： ASK1_(1) CKD_(4) CS17919_(2) GS-4997_(3) NASH_(5)

High peak power mini-array quantum cascade lasers operating in pulsed mode

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2025年第1期34卷 339-342页

作者： Yuhang Zhang Yupei Wang Xiaoyue Luo Chenhao Qian Yang Cheng Wu Zhao Fangyuan Sun Jun Wang Zheng-Ming Sun Southeast University-Monash University Joint Graduate School(Suzhou) Southeast UniversitySuzhou 215125China School of Materials Science and Engineering Southeast UniversityNanjing 211189China co.lege of Electronics and Information Engineering Sichuan UniversityChengdu 610065China Huaiyin Institute of technology Huaian 223003China Suzhou Everbright Photonics co. Ltd.Suzhou 215163China

Broad area quantum cascade lasers(BA QCLs)have significant applications in many areas,but suffer from demanding pulse operating co.ditions and poor beam quality due to heat accumulation and generation of high order modes.A structure of mini-array is adopted to improve the heat dissipation capacity and beam quality of BA *** active region is etched to form a multi-emitter and the channels are filled with In P:Fe,which acts as a lateral heat dissipation channel to improve the lateral heat dissipation efficiency.A device withλ~4.8μm,a peak output power of 122 W at 1.2%duty cycle with a pulse of 1.5μs is obtained in room temperature,with far-field single-lobed *** result allows BA QCLs to obtain high peak power at wider pump pulse widths and higher duty cycle co.ditions,promotes the application of the mid-infrared laser operating in pulsed mode in th e field of standoff photoaco.stic chemical detection,space optical co.munication,and so on.

关键词： quantum cascade laser mini-array thermal management

Characterizing large deformation of soft rock tunnel using microseismic monitoring and numerical simulation

在线全文

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2025年第1期17卷 309-322页

作者： Yuepeng Sun Nuwen Xu Peiwei Xiao zhiqiang Sun Huailiang Li Jun Liu Biao Li State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China Power China Sinohydro Bureau 7 co. Ltd.Chengdu610213China Key Laboratory of Earth Exploration and Information technology Chengdu University of TechnologyChengdu610059China School of Geoscience and technology Southwest Petroleum UniversityChengdu610500China

Surrounding rock deterioration and large deformation have always been a significant difficulty in designing and co.structing tunnels in soft *** key lies in real-time perception and quantitative assessment of the damaged area around the *** in situ microseismic(MS)monitoring system is established in the plateau soft tock *** technique facilitates spatiotemporal monitoring of the rock mass's fracturing expansion and squeezing deformation,which agree well with field co.vergence deformation *** formation mechanisms of progressive failure evolution of soft rock tunnels were discussed and analyzed with MS data and numerical *** results demonstrate that:(1)Localized stress co.centration and layered rock result in significant asymmetry in micro-fractures propagation in the tunnel radial *** excavation co.tinues,the fracture extension area extends into the deep surrounding rockmass on the east side affected by the weak bedding;(2)Tunnel excavation and long-term deformation can induce tensile shear action on the rock mass,vertical tension fractures(acco.nt for 45%)exist in deep rockmass,which play a crucial role in co.trolling the macrosco.ic failure of surrounding rock;and(3)Based on the radiated MS energy,a three-dimensional model was created to visualize the damage zone of the tunnel surrounding *** model depicted varying degrees of damage,and three high damage zones were ***,the depth of high damage zone ranged from 4 m to 12 *** study may be a valuable reference for the warning and co.trolling of large deformations in similar projects.

关键词： Soft rock tunnel MS monitoring Progressive failure characteristic Excavation damage zone Failure mechanism

Hierarchical Polyimide Nonwoven Fabric with Ultralow-Reflectivity Electromagnetic Interference Shielding and High-Temperature Resistant Infrared Stealth Performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第4期17卷 111-129页

作者： Xinwei Tang Yezi Lu Shuangshuang Li Mingyang Zhu Zixuan Wang Yan Li Zaiyin Hu Penglun Zheng Zicheng Wang Tianxi Liu The Key Laboratory of Synthetic and Biological co.loids Ministry of EducationSchool of Chemical and Material EngineeringInternational Joint Research Laboratory for Nano Energy CompositesJiangnan UniversityWuxi 214122JiangsuPeople’s Republic of China Jiangsu Ferrotec Semico.ductor technology co. Ltd.Yancheng 214000JiangsuPeople’s Republic of China Guizhou Aerospace Wujiang Electro-Mechanical Equipment co. Ltd.No.20-5Dalian Road Aerospace Industrial ParkHuichuan DistrictZunyi City 563000GuizhouPeople’s Republic of China Civil Aircraft Fire Science and Safety Engineering Key Laboratory of sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307SichuanPeople’s Republic of China

Designing and fabricating a co.patible low-reflectivity electromagnetic interference(EMI)shielding/high-temperature resistant infrared stealth material possesses a critical significance in the field of ***,a hierarchical polyimide(PI)nonwoven fabric is fabricated by alkali treatment,in-situ growth of magnetic particles and"self-activated"electroless Ag plating ***,the hierarchical impedance matching can be co.structed by systematically assembling Fe_(3)O_(4)/Ag-loaded PI nonwoven fabric(PFA)and pure Ag-co.ted PI nonwoven fabric(PA),endowing it with an ultralowreflectivity EMI shielding *** addition,thermal insulation of fluffy three-dimensional(3D)space structure in PFA and low infrared emissivity of PA originated from Ag plating bring an excellent infrared stealth *** importantly,the strong bonding interaction between Fe_(3)O_(4),Ag,and PI fiber improves thermal stability in EMI shielding and high-temperature resistant infrared stealth *** excellent co.prehensive performance makes it promising for military tents to protect internal equipment from electromagnetic interference stemmed from adjacent equipment and/or enemy,and inhibit external infrared detection.

关键词： Polyimide Electromagnetic interference shielding Low reflectivity Infrared stealth co.patibility

Pangenome analysis of Rummeliibacillus *** reveals their unexpected diversity and potential for industrial application

在线全文

学校读者我要写书评

暂无评论

微生物学报 2025年第2期65卷 781-795页

作者： ZOU Wei YANG Lingling LIU Chaojie ZHENG Jia ZHANG Kaizheng QIAO Zongwei co.lege of Biological Engineering Sichuan University of Science&EngineeringYibinSichuanChina Wuliangye Yibin co. Ltd.YibinSichuanChina

[Objective]Rummeliibacillus,a genus enco.passing three known species,***,***,and ***,has a wide range of potential applications in biodegradation,probiotics,animal feed,and production of arginine,caproic acid,and other *** study aims to explore the genetic diversity of this genus at the genomic level.[Methods]A co.parative pangenome analysis of 12 strains isolated from different sources was *** addition,the phylogenetic analysis,functional annotation,genomic metabolic pathway analysis,and prediction of mobile genetic elements were carried out.[Results]A total of 8024 gene clusters were *** co.e genome,accessory genome,and strain-specific genes co.prised 1550,3941,and 2533 gene clusters,*** the co.e genome,the arginine cycle of six strains was *** strains had the ability to co.pletely biosynthesize ***,only *** and *** 3B-1 were able to co.pletely biosynthesize caproic *** phylogenetic tree,DNA-DNA hybridization,and average nucleotide identity showed that Rummeliibacillus sp.G93 and Rummeliibacillus ***-LIM-RU47 were strains of *** ***4 and Rummeliibacillus ***005 may belong to a new species of this *** addition,genomic islands were identified in all the 12 strains,with the number ranging from four(*** DSM 25578 and *** NBRC 104870)to 14(Rummeliibacillus ***167 and Rummeliibacillus ***005),and prophage sequences were found in five of the 12strains.[co.clusion]This study provides a genomic framework for Rummeliibacillus that co.ld assist the further exploration of this genus.

关键词： average nucleotide identity Bacterial pan-genome analysis(BPGA) genomic islands pangenome Rummeliibacillus

同方期刊数据库

Ammonia-induced CuO/13X for H_(2)S removal from simulated blast furnace gas at low temperature

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2025年第1期10卷 139-149页

作者： Erping Cao Yuhua Zheng Hao Zhang Jianshan Wang Yuran Li Tingyu Zhu Zhan-guo Zhang Guangwen Xu Yanbin Cui State Key Laboratory of Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China State Key Laboratory of Vanadium and Titanium Resources co.prehensive Utilization PanGang Group Research Institute Co.Ltd.Panzhihua Sichuan617000China Shenyang University of Chemical technology Shenyang110142China University of Chinese Academy of Sciences Beijing 100049China

Blast furnace gas(BFG)is an important by-product energy for the iron and steel industry and has been widely used for heating or electricity ***,the undesirable co.taminants in BFG(especially H_(2)S)generate harmful environmental *** desulfurization of BFG is urgent for integrated steel plants due to the stringent ultra-low emission *** with other desulfurization materials,zeolite-based adsorbents represent a viable option with low co.ts and long service *** this study,an ammonia-induced CuO modified 13X adsorbent(NH_(3)–CuO/13X)was prepared for H_(2)S removal from simulated BFG at low *** XRD,H_(2)-TPR and TEM analysis proved that smaller CuO particles were formed and the dispersion of Cu on the surface of 13X zeolite was improved via the induction of *** on H_(2)S adsorption performance of the adsorbent was carried out using simulated BFG,and the results showed that NH_(3)–CuO/13X-3 has better breakthrough sulfur capacity,which was more than twice the sulfur capacity of CuO/*** is proposed that the enhanced desulfurization performance of NH_(3)–CuO/13X is attributed to an abundant pore of 13X,and co.bined action of 13X and *** work provided an effective way to improve the sulfur capacity of zeolite-based adsorbents via impregnation method by ammonia induction.

关键词： Blast furnace gas Desulfurization Ammonia-induced CuO 13X zeolite