检索结果-南通市图书馆

Hepatic artery bridging lessens temporary ischemic injury to bile canaliculi

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第35期21卷 10113-10125页

作者： jia-zhong wang Yang Liu Jin-Long wang Le Lu Ya-Fei Zhang Hong-Wei Lu Yi-Ming Li Department of General Surgery the Second Affiliated HospitalXi'an Jiaotong University School of Medicine

AIM: To study whether transfer of blood between the right gastroepiploic artery and gastroduodenal artery could lessens the damage to bile ***: Forty male Bama miniature pigs were divided into four groups as follows: a control group, two hepatic artery ischemia groups(1 h and 2 h), and a hepatic artery bridging group. The hemodynamics of the hepatic artery in the hepatic artery bridging group was measured using color Doppler ultrasound. Morphological changes in the bile canaliculus were observed by transmission electron microscopy. Cofilin, heat shock protein 27 and F-actin expression was detected by immunohistochemistry, Western blot, and real-time polymerase chain reaction. Terminal deoxynucleotidyl transferase-mediated nick end-labeling method was used to evaluate liver injury. RESULTS: The hemodynamics was not changed in the hepatic artery bridging group. The microvilli in the bile canaliculus were impaired in the two hepatic artery ischemia groups. The down-regulation of cofilin and F-actin and up-regulation of heat shock protein 27 were observed in the two hepatic artery ischemia groups, while there were no significant differences between thecontrol group and hepatic artery bridging ***: Hepatic artery ischemia aggravates damage to bile canaliculi, and this damage can be diminished by a hepatic artery bridging duct.

关键词： Nonanastomotic biliary strictures Hepatic artery i

Optimal V_(2)O_(3) extraction by sustainable vanadate electrolysis in molten salts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tungsten 2024年第1期6卷 141-149页

作者： Bao-Yan Feng zhong-Hua Zhao Yong-Zheng jia jia-Liang An Ming-Yong wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals University of Science and Technology BeijingBeijing 100083China

Recently,an environmentally friendly electrolysis process of soluble vanadates is proposed and successfully confirmed for V_(2)O_(3) *** this paper,the solubilities of various vanadates(***_(3),Na_(4)V_(2)O_(7) and Na_(3)VO_(4))in NaCl molten salt are *** dependences of V_(2)O_(3) extraction on vanadate form,anode material and molten salt system are studied.A long-term electrolysis is carried *** result indicates that the solubilities of all vanadates are high and meet electrolytic *** to Na_(4)V_(2)O_(7) and Na_(3)VO_(4),NaVO_(3) exhibits larger current efficiency and lower electricity *** using SnO_(2) anode instead of graphite anode,the current efficiency of NaVO_(3) electrolysis can be increased to 58.1%and carbon pollution is avoided at 700℃.The extraction rate of V_(2)O_(3) reaches 81.3%after long-term electrolysis of 51 *** work optimizes the electrochemical preparation process of V_(2)O_(3) from various vanadates and contributes to the improvement of current efficiency and extraction rate.

关键词： Molten salt electrolysis Vanadate Vanadium trioxide Current efficiency

Advances in controlled-release fertilizer encapsulated by organic-inorganic composite membranes

在线全文

学校读者我要写书评

暂无评论

Particuology 2024年第1期84卷 236-248页

作者： Xueping wang Yongyan Yang Shuangling zhong Qingye Meng Yiwei Li jia wang Yan Gao Xuejun Cui College of Chemistry Jilin UniversityChangchun130012China College of Resources and Environment Jilin Agricultural UniversityChangchun130118China State Key Laboratory of Supramolecular Structure and Materials Jilin UniversityChangchun130012China Weihai Institute for Bionics-Jilin University Weihai264400China

Heavy use of conventional fertilizers can lead to negative environmental ***-release fertilizers(CRFs)can effectively reduce the amounts of fertilizers used,improve the availability of fer-tilizers,and which is conducive to the protection of the ecological environment and sustainable devel-opment of ***,it is imperative to develop and use CRFs as an alternative to traditional *** review aims to present the classification,raw material composition,benefits,release process,release mode,and manufacturing methods of fertilizers coated with organic-inorganic com-posite membranes(OICMs)in order to provide an overall update and summarize CRFs encapsulated by OICMs and provide an insight for future trends in the field of *** is expected that utilizing CRFs encapsulated by OICMs and their characteristics for agricultural applications can provide innovative ideas and suggestions for developing novel CRFs suitable for modern and sustainable agriculture.

关键词： Controlled-release fertilizers Organic-inorganic composite membranes Surface treatments

An Innovative Coupled Common-Node Discrete Element Method-Smoothed Particle Hydrodynamics Model Developed with LS-DYNA and Its Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Ocean Engineering 2024年第3期38卷 467-482页

作者： SHEN zhong-xiang wang Wen-qing XU Cheng-yue LUO jia-xin LIU Ren-wei School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212100China College of Harbor Coastal and Offshore EngineeringHohai UniversityNanjing 210098China

In this study,a common-node DEM-SPH coupling model based on the shared node method is proposed,and a fluid–structure coupling method using the common-node discrete element method-smoothed particle hydrodynamics(DS-SPH)method is developed using LS-DYNA *** DEM and SPH are established on the same node to create common-node DEM-SPH particles,allowing for fluid–structure *** simulations of various scenarios,including water entry of a rigid sphere,dam-break propagation over wet beds,impact on an ice plate floating on water and ice accumulation on offshore structures,are *** interaction between DS particles and SPH fluid and the crack generation mechanism and expansion characteristics of the ice plate under the interaction of structure and fluid are also *** results are compared with available data to verify the proposed coupling ***,the simulation results demonstrated that controlling the cutoff pressure of internal SPH particles could effectively control particle splashing during ice crushing failure.

关键词： common-node DEM-SPH fluid-structure interaction discrete element method smoothed particle hydrodynamics

Bending Failure Mode and Prediction Method of the Compressive Strain Capacity of A Submarine Pipeline with Dent Defects

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2024年第4期38卷 636-647页

作者： HOU Fu-heng jia Lu-sheng CHEN Yan-fei ZHANG Qi zhong Rong-feng wang Chun-sha School of Mechanical and Transportation Engineering China University of PetroleumBeijingBeijing 102249China CNOOC Research Institute Ltd.Beijing 100028 China

A dent is a common type of defects for submarine *** submarine pipelines,high hydrostatic pressure and internal pressure are the main *** pipelines bend due to complex subsea conditions,the compression strain capacity may be *** into the local buckling failure and accurate prediction of the compressive strain capacity are important.A finite element model of a pipeline with a dent is *** buckling failure under a bending moment is investigated,and the compressive strain capacity is *** effects of different parameters on pipeline local buckling are *** results show that the dent depth,external pressure and internal pressure lead to different local buckling failure modes of the pipeline.A higher internal pressure indicates a larger compressive strain capacity,and the opposite is true for external *** the ratio of external pressure to collapse pressure of intact pipeline is greater than 0.1,the deeper the dent,the greater the compressive strain capacity of the *** as the ratio is less than 0.1,the opposite is *** the basis of these results,a regression equation for predicting the compressive strain capacity of a dented submarine pipeline is proposed,which can be referred to during the integrity assessment of a submarine pipeline.

关键词： submarine pipeline dent defect bending load local buckling compressive strain capacity

Mechanism of high-energy pulsed current-assisted rolling of 08AL carbon steel ultra-thin strip

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第2期31卷 416-427页

作者： zhong-kai Ren Ya-nan Xu jia-zhao Chen He Li Rui-lin Yuan Zhen-hua wang Tao wang Xiao Liu College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan030024ShanxiChina Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment(Ministry of Education) Taiyuan University of TechnologyTaiyuan030024ShanxiChina National Key Laboratory of Metal Forming Technology and Heavy Equipment China National Heavy Machinery Research Institute Co.Ltd.Xi’an710016ShaanxiChina

To improve the plastic deformation performance of a 08AL carbon steel ultra-thin strip,a pulsed electric field was integrated into the plastic processing of the ultra-thin strip,and the effects of high-energy current on its deformation ability were ***-assisted tensile tests were employed,and the results clarified that the pulsed current could reduce the activation energy of faults and promoted dislocation slip within grains and at grain boundaries,leading to a decrease in the deformation resistance of the metal and an increase in its plastic *** the current density of 2.0 A/mm2,the yield strength,tensile strength,and elongation of the rolled sample reached 425 MPa,467 MPa,and 12.5%,*** the rolling process,it was found that the pulsed current promoted the dynamic recrystallization of the ultra-thin strip,reduced its dislocation density and deformation resistance,and promoted the coordinated deformation of the metal.

关键词： 08AL ultra-thin strip High-energy pulsed current Mechanical property Dislocation density Dynamic recrystallization

Determination of the chromosomal position effects for plug-and-play application in the Myxococcus xanthus chassis cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthetic and Systems Biotechnology 2024年第3期9卷 540-548页

作者： Xin-jing Yue jia-rui wang Jun-ning Zhao Zhuo Pan Yue-zhong Li State Key Laboratory of Microbial Technology Institute of Microbial TechnologyShandong UniversityQingdaoPR China

The chromosomal position effect can significantly affect the transgene expression,which may provide an efficient strategy for the inauguration of alien genes in new hosts,but has been less explored *** bacterium Myxococcus xanthus harbors a large circular high-GC genome,and the position effect in this chassis may result in a thousand-fold expression variation of alien natural *** this study,we conducted transposon insertion at TA sites on the *** genome,and used enrichment and dilution indexes to respectively appraise high and low expression potentials of alien genes at insertion *** enrichment sites are characteristically distributed along the genome,and the dilution sites are overlapped well with the horizontal transfer *** experimentally demonstrated the enrichment sites as high expression integration sites(HEISs),and the dilution sites unsuitable for gene integration *** work highlights that HEISs are the plug-and-play sites for efficient expression of integrated genes.

关键词： Position effect High expression integration sites(HEISs) Myxococcus xanthus Tn-seq

Calmodulin-like 5 promotes PEDV replication by regulating late-endosome synthesis and innate immune response

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Virologica Sinica 2024年第3期39卷 501-512页

作者： Wen-Jun Tian Xiu-zhong Zhang Jing wang jian-Feng Liu Fu-Huang Li Xiao-jia wang National Key Laboratory of Veterinary Public Health and Safety College of Veterinary MedicineChina Agricultural UniversityBeijing 100193China College of Animal Science and Technology China Agricultural UniversityBeijing 100193China Beijing General Station of Animal Husbandry Service(South Section) Beijing102218China

The infection caused by porcine epidemic diarrhea virus(PEDV)is associated with high mortality in piglets *** factors involved in the efficient replication of PEDV,however,remain largely *** recent proteomic study in the virus-host interaction network revealed a significant increase in the accumulation of CALML5(EF-hand protein calmodulin-like 5)following PEDV infection.A further study unveiled a biphasic increase of CALML5 in 2 and 12 h after viral *** trends were observed in the intestines of piglets in the early and late stages of the PEDV ***,CALML5 depletion reduced PEDV mRNA and protein levels,leading to a one-order-of-magnitude decrease in virus *** the early stage of PEDV infection,CALML5 affected the endosomal trafficking pathway by regulating the expression of endosomal sorting complex related cellular ***5 depletion also suppressed IFN-βand IL-6 production in the PEDV-infected cells,thereby indicating its involvement in negatively regulating the innate immune *** study reveals the biological function of CALML5 in the virology field and offers new insights into the PEDV-host cell interaction.

关键词： Porcine epidemic diarrhea virus(PEDV) EF-hand protein calmodulin-like 5(CALML5) Late endosomes Innate immune response

Structural Evolution of Ultra-High Molecular Weight Polyethylene Low-Entangled Films with Reserved Shish Crystals During Hot Stretching

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第8期42卷 1227-1242页

作者： jia-Wei Gao Li Chen Ye-Shun zhong Chao-Wei Xing Yi-Guo Li Zong-Bao wang School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China

Shish crystals are crucial to achieving high performance low-dimensional ultra-high molecular weight polyethylene(UHMWPE)***,high stretch and shear flow fields are necessary for the formation of shish *** this study,UHMWPE gel films with reserved shish crystals were prepared by gel molding,the structural evolution and properties of UHMWPE films stretched at temperatu res of 100,110,120and 130℃were investigated by in situ small-angle X-ray scattering(SAXS)/ultra-small-angle X-ray scattering(USAXS)/wide-angle X-ray diffraction(WAXD)measu rements as well as scanning electron microscopy(SEM)and differential scanning calorimetry(DSC)*** findings showed that the reserved shish crystals can facilitate the formation and structural evolution of shish-kebab crystals during the hot ***,the reserved shish crystals promote the structu ral evolution of UHMWPE films to a greater extent when stretched at 120 and 130℃,compared to 100 and 110℃,resulting in higher crystallinity,orientation,thermal properties,breaking strength and Young's *** pared to UHMWPE high-entangled films with reserved shish crystals prepared by compression molding,UHMWPE low-entangled films with reserved shish crystals prepared by gel molding are more effective in inducing the formation and evolution of shish-kebab crystals during the hot stretching,resulting in increased breaking strength and Young's modulus.

关键词： UHMWPE low-entangled films Reserved shish crystals Structural evolution Hot stretching