检索结果-南通市图书馆

Reactive Transport Process of Earthquake-induced Hydrochemical Changes in Guanding Thermal Spring,Western Sichuan,China

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2024年第1期98卷 241-249页

作者： na jin JIANG Xue SHI Zheming CHEN Yanmei Hubei Key Laboratory of Petroleum Geochemistry and Environment(Yangtze University) Wuhan 430100China School of Environmental Studies China University of GeosciencesWuhan 430074China School of Water Resources and Environment China University of GeosciencesBeijing 100083China State Key Laboratory of Water Resource Protection and Utilization in Coal Mining Beijing 100000China

Earthquake-related hydrochemical changes in thermal springs have been widely observed;however,quantitative modeling of the reactive transport process is *** the present study,we apply reactive transport simulation to capture the hydrochemical responses in a thermal spring following the Wenchuan Ms 8.0 and Lushan Ms 7.0 *** first constrain deep reservoir geothermal fluid compositions and temperature by multicomponent geothermometry,and then a reactive geochemical transport model is constructed to reproduce the hydrochemical evolution *** results show that the recharge from the shallow aquifer increases gradually until it reaches a peak because of the permeability enhancement caused by the Lushan earthquake,which may be the mechanism to explain the earthquake-related hydrochemical *** contrast to the postseismic effect of the Wenchuan earthquake,the chemical evolution can be considered as hydrochemical anomalies related to the Lushan *** study proves that the efficient simulation of reactive transport processes is useful for investigating earthquake-related signals in hydrochemical time series.

关键词： earthquake hydrochemical changes reactive geochemical transport model Kangding area

Therapeutic strategies of targeting nonapoptotic regulated cell death (RCD) with smallmolecule compounds in cancer

在线全文

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2024年第7期14卷 2815-2853页

作者： Xin jin Wenke jin Linlin Tong Jia Zhao Lan Zhang na Lin Department of Ultrasound Department of Medical Oncology and Department of Hematologythe First Hospital of China Medical UniversityChina Medical UniversityShenyang 110001China Sichuan Engineering Research Center for Biomimetic Synthesis of natural Drugs School of Life Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China

Regulated cell death(RCD)is a controlled form of cell death orchestrated by one or more cascading signaling pathways,making it amenable to pharmacological *** subroutines can be categorized as apoptotic or non-apoptotic and play essential roles in maintaining homeostasis,facilitating development,and modulating *** evidence has recently revealed that RCD evasion is frequently the primary cause of tumor *** non-apoptotic RCD subroutines have garnered attention as promising cancer therapies due to their ability to induce tumor regression and prevent relapse,comparable to ***,they offer potential solutions for overcoming the acquired resistance of tumors toward apoptotic *** an increasing understanding of the underlying mechanisms governing these non-apoptotic RCD subroutines,a growing number of small-molecule compounds targeting single or multiple pathways have been discovered,providing novel strategies for current cancer *** this review,we comprehensively summarized the current regulatory mechanisms of the emerging non-apoptotic RCD subroutines,mainly including autophagy-dependent cell death,ferroptosis,cuproptosis,disulfidptosis,necroptosis,pyroptosis,alkaliptosis,oxeiptosis,parthanatos,mitochondrial permeability transition(MPT)-driven necrosis,entotic cell death,NETotic cell death,lysosome-dependent cell death,and immunogenic cell death(ICD).Furthermore,we focused on discussing the pharmacological regulatory mechanisms of related small-molecule *** brief,these insightful findings may provide valuable guidance for investigating individual or collaborative targeting approaches towards different RCD subroutines,ultimately driving the discovery of novel small-molecule compounds that target RCD and significantly enhance future cancer therapeutics.

关键词： Regulated cell death(RCD) Non-apoptotic RCD subroutine Autophagy Ferroptosis Necroptosis Regulatory mechanism Small-molecule compound Cancer therapy

High-current pulsed electron beam modification on microstructure and performance of Cu/CuW diffusion bonding joints

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第6期43卷 2819-2831页

作者： na-na Tian Cong-Lin Zhang Peng Lyu jin-Tong Guan Jie Cai Qing-Feng Guan Shun Guo School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China School of Material Science and Engineering Yancheng Institute of TechnologyYancheng 221051China Engineering Institute of Advanced Manufacturing and Modern Equipment Technology Jiangsu UniversityZhenjiang 212013China

This study investigates the influence of high-current pulsed electron beam(HCPEB)modification on the microstructure and shear strength of Cu/CuW *** solid-state diffusion bonding of modified-Cu(MCu)and modified-CuW(M-CuW)was achieved by HCPEB modification pretreatment at a temperature of 800-900℃and a pressure of 5 MPa for 10-50 *** demonstrate that HCPEB modification facilitates the dissolution of W and Cu,resulting in the formation of a Cu_(0.4)W_(0.6)solid solution and thus enhancing the uniform distribution of ***,HCPEB-induced defects play a beneficial role in promoting the diffusion process by providing fast diffusion paths for *** optimal joints with the maximum shear strength of 213.7 MPa were obtained through bonding M-Cu and M-CuW at 900℃and 5 MPa for 30 min,which attributes to the combined effects of fine-grained strengthening and solid solution ***,the application of HCPEB modification showcases its effectiveness in promoting element diffusion and enhancing the mechanical performance of the joints.

关键词： HCPEB Element diffusion Shear strength Crystal defects Surface modification

Improvement of mechanical properties and investigation of strengthening mechanisms on the Ti_(3)AlC_(2) ceramic with nanosized WC addition

在线全文

学校读者我要写书评

暂无评论

Journal of Advanced Ceramics 2024年第6期13卷 861-876页

作者： Yi Zhong Ying Liu Qinkai Jiang na jin Zifeng Lin jinwen Ye School of Materials Science&Engineering Sichuan UniversityChengdu 610065China Yibin R&D Park Yibin Industrial Technology Research InstituteSichuan UniversityYibin 644005China

Ti_(3)AlC_(2) (TAC) has great potential for use as an ablation material in aerospace applications due to its great oxidation/ablation resistance, but its high-temperature strength and thermal shock resistance still have much room for simultaneous improvement under fast temperature variation conditions. Herein, we used Ti_(3)AlC_(2) and WC powders as raw materials and successfully fabricated textured (Ti,W)_(3)AlC_(2) ceramic with small amounts of TiC and Al_(2)O_(3), and room temperature mechanical properties such as flexural strength (1146±46.9 MPa), fracture toughness (11.78±0.44 MPa·m^(1/2)), and hardness (5.81±0.11 GPa) at 5 wt% WC addition were achieved. The high-temperature strength of the ceramic was significantly improved, and better thermal shock resistance from 298 to 1173 K was simultaneously acquired together with the regulation of the elastic modulus, thermal conductivity, and thermal expansion coefficient, providing (Ti,W)_(3)AlC_(2) with more possibilities for fast-temperature variation applications. Strengthening and toughening mechanisms were proposed. Scanning transmission electron microscopy high-angle annular dark-field imaging (STEM-HADDF) showed that W randomly replaced the Ti1 and Ti2 sites of Ti_(3)AlC_(2), providing a good reference for establishing crystal models, and further density functional theory (DFT) calculations based on these models indicated a higher fracture energy of (Ti,W)_(3)AlC_(2) along different crystal planes, providing superior resistance to transgranular fracture;a lower mismatch degree of (Ti,W)_(3)AlC_(2)/Al_(2)O_(3) resulted in stronger interface bonding, resulting in greater resistance to intergranular fracture as well as more balanced stress distributions at different interfaces.

关键词： mechanical properties solid solution MAX phase transmission electron microscopy(TEM) ceramic atomic structure

Five-year major clinical outcomes between first-generation ana second- generation drug-eluting stents in acute myocardial infarction patients underwent percutaneous coronary intervention

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 Geriatric Cardiology 2018年第8期15卷 523-533页

作者： Yong Hoon Kim Ae-Young Her Seung-Woon Rha Byoung Geol Choi Se Yeon Choi Jae Kyeong Byun Ju Yeol Baek Woong Gil Choi Tae Soo Kang Ji Hoon Ahn Sang-Ho Park Ahmed Mashaly jin oh na Cheol Ung Choi Hong Euy Lim Eung Ju Kim Chang Gyu Park Hong Seog Seo Dong Joo oh Division of Cardiology Department of Internal Medicine Kangwon National University School of Medicine Chuneheon South Korea Cardiovascular Center Korea University Guro Hospital Seoul South Korea Department of Medicine Korea University Graduate School Seoul South Korea Cardiovascular Center Cheong Ju St. Mary hospital Cheong Ju Chung Buk South Korea SCardiology Department Konkuk University Chungju Hospital Chungju South Korea Department of Internal Medicine Cardiovascular Division Dankook University Hospital Cheonan South Korea Department of Cardiology Soonchunhyang University Gumi Hospital G-umi South Korea Cardiology Department Soonchunhyang University Cheonan Hospital Cheonan South Korea

Background There were limited data comparing the major clinical outcomes between first-generation （1G）-drug eluting stentts （DES） and second-generation （2G）-DES in patients with acute myocardial infarction （AMI） after percutaneous coronary intervention （PCI） during very long follow-up periods. We thought to investigate the comparative efficacy and safety of 2G-DES compared with 1G-DES in AMI patients during 5-year follow-up periods. Method A total of 1016 eligible AMI patients who underwent PCI with 1G-DES [paclitaxel-, sirolimus-, 1G-zotarolimus-eluting stent （endeavor~ or endeavor sprintS）, n = 554] or 2G-DES [2G-zotarolimus （endeavor resolute~）- or everolimus-eluting stent, n = 462] were enrolled. The primary endpoint was the occurrence of major adverse cardiac events （MACE） defined as total death, non-fatal myocardial infarction （MI）, target lesion revascularization （TLR）, target vessel revascularization （TVR）, non-target vessel revascularization （Non-TVR） and the secondary endpoint was stem thrombosis （ST） at 5 years. Results Two propensity score-ma- tched （PSM） groups （232 pairs, n = 464, C-statistic = 0.802） were generated. During the 5-year follow-up period, the cumulative incidence of TLR [hazard ratio （HR）： 3.133; 95% confidence interval （CI）： 1.539-6.376; P = 0.002], TVR （HR： 3.144; 95% CI： 1.59645.192; P = 0.001） and total revascularization rate （FIR： 1.874; 95% CI： 1.086-3.140; P = 0.023） were significantly higher in 1G-DES compared with 2G-DES after PSM. However, the incidence of total death, non-fatal MI and ST were similar between the two groups. Conclusion In this single-center and all-comers registry, 2G-DES＇s superiorities for TLR, TVP, and total revascularization in AMI patients suggested during 5-year clinical follow-up periods.

关键词： Acute myocardial infarction Clinical outcomes Drug-eluting stem

Two distinct subpopulations of marginal zone B cells exhibit differential antibody-producing capacities and radioresistance

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2024年第4期21卷 393-408页

作者： Sujin Lee Yeunjung Ko Hyun Woo Lee Won Joon oh Hun Gi Hong Dinuka Ariyaratne Se jin Im Tae jin Kim Department of Immunology Graduate School of Basic Medical ScienceSungkyunkwan University School of MedicineSuwon16419Republic of Korea Department of Immunology and Molecular Medicine Faculty of Medical SciencesUniversity of Sri JayewardenepuraNugegodaSri Lanka Present address:Immunology and Microbiology Graduate Program Baylor College of MedicineHoustonTX77030USA

Marginal zone(MZ)B cells,which are splenic innate-like B cells that rapidly secrete antibodies(Abs)against blood-borne pathogens,are composed of heterogeneous ***,we showed that MZ B cells can be divided into two distinct subpopulations according to their CD80 expression ***80^(high)MZ B cells exhibited greater Ab-producing,proliferative,and IL-10-secreting capacities than did CD80^(low)MZ B ***,CD80^(high)MZ B cells survived 2-Gy whole-body irradiation,whereas CD80^(low)MZ B cells were depleted by irradiation and then repleted with one month after *** of CD80^(low)MZ B cells led to accelerated development of type II collagen(CII)-induced arthritis upon immunization with bovine ***80^(high)MZ B cells exhibited higher expression of genes involved in proliferation,plasma cell differentiation,and the antioxidant ***80^(high)MZ B cells expressed more autoreactive B cell receptors(BCRs)that recognized double-stranded Dna or CII,expressed more immunoglobulin heavy chain sequences with shorter complementarity-determining region 3 sequences,and included more clonotypes with no N-nucleotides or with B-1a BCR sequences than CD80^(low)MZ B *** transfer experiments showed that CD21^(+)CD23^(+)transitional 2 MZ precursors preferentially generated CD80^(low)MZ B cells and that a proportion of CD80^(low)MZ B cells were converted into CD80^(high)MZ B cells;in contrast,CD80^(high)MZ B cells stably remained CD80^(high)MZ B *** summary,MZ B cells can be divided into two subpopulations according to their CD80 expression levels,Ab-producing capacity,radioresistance,and autoreactivity,and these findings may suggest a hierarchical composition of MZ B cells with differential stability and BCR specificity.

关键词： Marginal Zone B Cell CD80 Autoreactivity Radioresistance

Single-cell Rna sequencing analysis of the retina under acute high intraocular pressure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第11期19卷 2522-2531页

作者： Shaojun Wang Siti Tong Xin jin na Li Pingxiu Dang Yang Sui Ying Liu Dajiang Wang Division of Ophthalmology The Third Medical Center of PLA General HospitalBeijingChina Department of Ophthalmology Beijing Rehabilitation HospitalCapital Medical UniversityBeijingChina

High intraocular pressure causes retinal ganglion cell injury in primary and secondary glaucoma diseases,yet the molecular landscape characteristics of retinal cells under high intraocular pressure remain *** models of acute hypertension ocular pressure were established by injection of cross-linked hyaluronic acid hydrogel(Healaflow■).Single-cell Rna sequencing was then used to describe the cellular composition and molecular profile of the retina following high intraocular *** results identified a total of 12 cell types,namely retinal pigment epithelial cells,rod-photoreceptor cells,bipolar cells,Müller cells,microglia,cone-photoreceptor cells,retinal ganglion cells,endothelial cells,retinal progenitor cells,oligodendrocytes,pericytes,and *** single-cell Rna sequencing analysis of the retina under acute high intraocular pressure revealed obvious changes in the proportions of various retinal cells,with ganglion cells decreased by 23%.Hematoxylin and eosin staining and TUNEL staining confirmed the damage to retinal ganglion cells under high intraocular *** extracted data from retinal ganglion cells and analyzed the retinal ganglion cell cluster with the most distinct *** found upregulation of the B3gat2 gene,which is associated with neuronal migration and adhesion,and downregulation of the Tsc22d gene,which participates in inhibition of *** study is the first to reveal molecular changes and intercellular interactions in the retina under high intraocular *** data contribute to understanding of the molecular mechanism of retinal injury induced by high intraocular pressure and will benefit the development of novel therapies.

关键词： apoptosis axon degeneration high intraocular pressure microglia ocular hypertension photoreceptor cells retina retinal degeneration retinal ganglion cells single-cell Rna sequencing

Understanding the factors influencing cloud-core vertical accelerations during deep convection formation in the WRF model

在线全文

学校读者我要写书评

暂无评论

Atmospheric and Oceanic Science Letters 2024年第3期17卷 1-7页

作者： na Li jin Wang Lingkun Ran Lei Yin Xiba Tang Yuchen Liu Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Guizhou Meteorological Bureau GuiyangChina University of Chinese Academy of Sciences BeijingChina nanjing University of Posts and Telecommunications NanjingChina Yunnan Key Laboratory of Meteorological Disasters and Climate Resources in the Great Mekong Subregion Yunnan UniversityKunmingChina

本文将扰动气压利用一个线性诊断关系代替,重新推导了WRF模式框架地形追随坐标系下的垂直动量方程,建立了垂直加速与对流触发(DCI)影响因子(如温度,水汽等)的直接联系.研究发现,DCI过程与对流核垂直加速相关,三维副散,扰动位势在垂直方... 详细信息

本文将扰动气压利用一个线性诊断关系代替,重新推导了WRF模式框架地形追随坐标系下的垂直动量方程,建立了垂直加速与对流触发(DCI)影响因子(如温度,水汽等)的直接联系.研究发现,DCI过程与对流核垂直加速相关,三维副散,扰动位势在垂直方向的二阶非均匀性,扰动位温垂直梯度,比湿及其垂直梯度,水凝物拖曳,均是能够直接影响垂直加速和对流触发的物理因子,这些量与模式基本预报量相关,通过解析基本预报量对对流发展的直接影响,可能有助于理解模式对DCI过程预测失败的原因.

关键词：垂直加速深对流垂直速度冰雹

TonEBP expression is essential in the IL-1β–induced migration and invasion of human A549 lung cancer cells

在线全文

学校读者我要写书评

暂无评论

Oncology Research 2024年第1期32卷 151-161页

作者： HEE JU SONG TAEHEE KIM HAN na CHOI SOO jin KIM SANG DO LEE Department of Physiology School of MedicineChungnam National UniversityDaejeon35015Korea

Lung cancer has the highest mortality rate among all cancers,in part because it readily *** tumor microenvironment,comprising blood vessels,fibroblasts,immune cells,and macrophages[including tumor-associated macrophages(TAMs)],is closely related to cancer cell growth,migration,and *** secrete several cytokines,including interleukin(IL)-1β,which participate in cancer migration and invasion.p21-activated kinase 1(PAK1),an important signaling molecule,induces cell migration and invasion in several ***responsive enhancer-binding protein(TonEBP)is also known to participate in cancer cell growth,migration,and ***,the mechanisms by which it increases lung cancer migration remain ***,in this study,we aimed to elucidate the mechanisms by which IL-1βand TonEBP affect lung cancer cell migration and *** found that A549 cocultured-MΦ-secreted IL-1βinduced A549 cell migration and invasion via the PAK1 *** deficiency reduced A549 cell migration and invasion and increased responsiveness to IL-1β–induced migration and ***1 phosphorylation,which was promoted by IL-1β,was reduced when TonEBP was *** results suggest that TonEBP plays an important role in IL-1βinduction and invasiveness of A549 cells via the PAK1 *** findings could be valuable in identifying potential targets for lung cancer treatment.

关键词： Lung cancer TonEBP Tumor microenvironment Tumor-associated macrophage IL-1β