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Early Triassic Volcanic Rocks in the Western Yarlung Zangbo Suture Zone:Implications for the Opening of the Neo-Tethys Ocean

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Acta Geologica Sinica(English Edition) 2024年第2期98卷 324-336页

作者： HE juan LI Yalin HOU Yunling ZHOU Aorigele WEI Yushuai CHEN Xi DAI Jingen School of Civil Engineering and Architecture West Yunnan University of Applied SciencesDaliYunnan 671006China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100080China West Yunnan University of Applied Sciences DaliYunnan 671006China MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100080China

In this study,zircon U-pb dating of volcanic rocks from the Zhongba ophiolite of the Yarlung Zangbo Suture Zone(YZSZ)in southern Xizang(Tibet)yielded an age of 247±3 *** to whole rock geochemical and Sr-Ndpb isotopic data,the Early Triassic samples could be divided into two groups:Group 1 with p-MORB affinity,showing initial^(87)Sr/^(86)Sr ratios of 0.70253–0.70602,ε_(Nd)(t)values of 4.2–5.3,(^(206)pb/^(204)pb)_(t)ratios of 16.353–18.222,(^(207)pb/^(204)pb)_(t)ratios of 15.454–15.564,and(^(208)pb/^(204)pb)_(t)ratios of 35.665–38.136;Group 2 with OIB affinity,showing initial^(87)Sr/^(86)Sr ratios of 0.70249–0.70513,ε_(Nd)(t)values of 4.4–4.9,(^(206)pb/^(204)pb)_(t)ratios of 17.140–18.328,(^(207)pb/^(204)pb)_(t)ratios of 15.491–15.575,and(^(208)pb/^(204)pb)_(t)ratios of 36.051–*** 2 rocks formed by partial melting of the mantle source enriched by a former plume,and assimilated continental crustal material during melt *** formation of Group 1 rocks corresponds to the mixing of OIB melts,with the same components as Group 2 and *** Zhongba Early Triassic rocks belong to the continental margin type ophiolite and formed in the continental–oceanic transition zone during the initial opening of the Neo-Tethys in southern Xizang(Tibet).

关键词： rift Early Triassic magmatism Yarlung Zangbo Suture Zone Neo-Tethys Southern Xizang Tibet

Thermal stability of the Cr-coated zirconium alloy microstructure prepared by pulsed laser deposition

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Tungsten 2024年第2期6卷 333-341页

作者： Bo Li Hui-Long Yang Reuben Holmes Li-juan Cui Sho Kano Hiroaki Abe Department of Nuclear Engineering and Management The University of TokyoTokyo 113-8656Japan School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Nuclear professional School The University of TokyoIbaraki 319-1188Japan

Cr-coated zirconium alloy was prepared by pulsed laser deposition(pLD)for the application of accident-tolerant fuel cladding in light water *** microstructural characteristics of the Cr coating and its evolution with temperature were investigated using grazing incidence X-ray diff raction and in situ heating transmission electron microscopy(TEM).Results show that the microstructure of the laser-deposited Cr coatings consists mainly of fine and non-specific shaped nano-crystals in the inner layer and columnar crystals in the outer *** recrystallization of the Cr-coating layer starts at 300–400℃ to release the high strain introduced by pLD,and the grain coalescence starts at temperatures>400°*** annealing,the(110)-texture gradually intensifi es because of its high reticular density and low close-packed ***,in situ heating TEM observation shows the presence of cavities on the Cr–Zr interface,which may result from the interdiff usion and/or the transformation from amorphous to crystalline.

关键词： Accident tolerant fuel Crcoating Interface Microstructure pulsed laser deposition

Local resistance characteristics of elbows for supercritical pressure Rp-3 flowing in serpentine micro-tubes

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propulsion and power Research 2024年第2期13卷 245-256页

作者： Yanchen Fu Yinlong Liu juan Wang Yu Wang Guoqiang Xu Jie Wen Research Institute of Aero-engine Beihang UniversityBeijing 100191China National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics Beihang UniversityBeijing 100191China Zhongfa Aviation Institute of Beihang University Hangzhou 310023China AECC Sichuan Gas Turbine Research Institute Chengdu 610500China AECC Hunan Aviation powerplant Research Institute Zhuzhou 412002China School of Energy and power Engineering Beihang UniversityBeijing 100191China

Based on the demands of compact heat exchangers and micro cooling channels applied for aviation thermal protection on aero-engines,the elbow localﬂow resistance charac-teristics for supercritical pressure aviation fuel Rp-3ﬂowing in adiabatic horizontal serpentine tubes with the inner diameter of 1.8 mm and the massﬂux of 1179 kg/(m^(2)·s)were experimen-tally *** long-short-tube method was used to obtain the elbow pressure drop from the total serpentine tube pressure drop,and the effects of system pressures(p/pc=1.72-2.58)and geometry parameters including bend numbers(n=5-11),bend diameters(D/d=16.7-27.8),and bend distances(L/d=20-60)on elbow pressure drops and local resistance co-efﬁcients are analyzed on the basis of the thermal physical property *** results show that both the increase in the elbow pressure drop and the decrease in the local resistance coef-ﬁcient with temperatures speed up at the near pseudo-critical temperature region of T>*** the growth of the elbow local pressure drop could be inhibited by the increase of system pressures,while the local resistance coefﬁcient is slightly affected by *** inﬂuence of bend diameters on the local resistance coefﬁcient is mild when D/d is larger than 22.2 in the premise of fully developedﬂow in straight ***,a piecewise empir-ical correlation considering the bend diameter and physical property ratio is developed to pre-dict the elbow pressure drop of the serpentine tube and optimize the layout of the cooling tube system on aero-engines.

关键词： Supercritical pressure Aviation fuel Local resistance coefﬁcient Elbow Serpentine tube Empirical correlation

Habitat-specific changes of plant and soil microbial community composition in response to fairy ring fungus Agaricus xanthodermus on the Qinghai-Tibet plateau

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Soil Ecology Letters 2024年第3期6卷 189-197页

作者： juan Du Cong He Fuxin Wang Ning Ling Shengjing Jiang State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730000China College of Ecology Lanzhou UniversityLanzhou 730000China

Fairy rings are common in diverse global biomes and often appear as lush vegetation in one to three concentric zones caused by the spread of mycelia in grassland ***,the underlying mechanisms and environmental adaptation of fairy rings remain largely *** this study,two fairy rings(A and B)caused by Agaricus xanthodermus were sampled on the Qinghai-Tibet plateau during a time when fairy rings are most *** conducting a vegetation survey and high-throughput sequencing,the changes of plants and soil microorganisms to fairy ring fungi were *** above-ground biomass at both fairy rings was greatly increased by fairy ring fungi,but the response of dominant plant species is different at two fairy ring *** addition,bacterial and fungal communities significantly varied within distinct sampling zones across the fairy rings,and showed variable genus-specific responses at two fairy ring *** fairy ring A,soil available N:p ratio was essential in shaping the structure of plant and microbial community,while soil available N concentration was the most important predictor at fairy ring *** together,our results indicated Agaricus xanthodermus fairy rings have variable effects on alpine meadow plants and soil microbes at different *** propose that the impacts of fairy ring fungi on plants and microbes are determined by the level of soil available N concentration and available N:p *** results contribute to a better understanding of the mechanisms through which fairy rings affect the vegetation of alpine meadows.

关键词： Fairy rings alpine meadow soil microbes plant-soil relationships

A general synthetic strategy for N, p co-doped graphene supported metal-rich noble metal phosphides for hydrogen generation

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Green Energy & Environment 2024年第1期9卷 152-162页

作者： Jingwen Ma Xiang Li Guangyu Lei Jun Wang juan Wang Jian Liu Ming Ke Yang Li Chunwen Sun School of Chemical and Environmental Engineering China University of Mining and Technology(Beijing)Beijing100083China State Key Laboratory of Heavy Oil processing China University of PetroleumBeijing102249China Lab of Advanced Nano-structures&Transfer processes Department of Chemical EngineeringTianjin UniversityTianjin300354China petroChina planning and Engineering Institute Beijing100083China

The exploitation of electrocatalysts with high activity and durability for HER is desirable for future energy systems,but it is still a *** have attracted increasing attentions,but the preparation process often needs toxic regents or dangerous reaction ***,we develop a general green method to fabricate metal-rich NMps anchored on NpG through pyrolyzing DNA cross-linked *** obtained Ru_(2) p-NpG exhibits an ultrasmall overpotential of 7 mV at 10 mA cm^(2) and ultralow Tafel slope of 33 mV dec^(-1) in 1.0 mol L?1 KOH,even better than that of commercial pt/*** addition,Ru 2 p-NpG also shows low overpotentials of 29 and 78 mV in 0.5 mol L^(-1) H_(2)SO_(4) and 1.0 mol L^(-1) pBS,*** superior activity can be attributed to the ultrafine dispersion of Ru 2 p nanoparticles for more accessible sites,more defects formed for abundant active sites,the two-dimensional plane structure for accelerated electron transfer and mass transport,as well as the regulation of electron distribution of the ***,the synthetic method can also be applied to prepare other metal-rich noble metal phosphides(pd_(3)p-NpG and Rh_(2)p-NpG),which also exhibits high activity for *** work provides an effective strategy for designing NMp-based electrocatalysts.

关键词： Noble metal phosphides Electrocatalyst Deoxyribonucleic acid Hydrogen evolution pH universal

prevalence and ecological factors affecting the distribution of plant-parasitic nematodes in prunus groves in Spain

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Journal of Integrative Agriculture 2024年第2期23卷 566-589页

作者： Ilenia Clavero-Camacho Antonio Archidona-Yuste Carolina Cantalapiedra-Navarrete pablo Castillo juan Emilio palomares-Rius Institute for Sustainable Agriculture(IAS) Spanish National Research Council(CSIC)Córdoba 14004Spain Andalusian Institute of Agricultural and Fisheries Research and Training(IFApA) Centro Alameda del ObispoCórdoba 14004Spain

A wide survey was conducted to study plant-parasitic nematodes(ppNs)associated with prunus groves in *** research aimed to determine the prevalence and distribution of ppNs in prunus groves,as well as the influence of explanatory variables describing soil,climate and agricultural management in structuring the variation of ppNs community composition.A total of 218 sampling sites were surveyed and 84 ppN species belonging to 32 genera were identified based of an integrative taxonomic *** species considered as potential limiting factors in prunus production,such as Meloidogyne arenaria,***,***,pratylenchus penetrans and ***,were identified in this *** soil physico-chemical(C,Mg,N,Na,OM,p,pH and clay,loamy sand and sandy loam texture classes),four climate(Bio04,Bio05,Bio13 and Bio14)and four agricultural management variables(grove-use history less than 10 years,irrigation,apricot seedling rootstock,and Montclar rootstock)were identified as the most influential variables driving spatial patterns of ppNs *** particular,younger plantations showed higher values for species richness and diversity indices than groves cultivated for more than 20 years with prunus *** study increases the knowledge of the distribution and prevalence of ppNs associated with prunus rhizosphere,as well as on the influence of explanatory variables driving the spatial structure ppNs communities,which has important implications for the successful design of sustainable management strategies in the future in this agricultural system.

关键词： nematodes Meloidogyne pratylenchus paratylenchus rootstock distribution soil grove-use almond peach

TOpK Inhibition Enhances the Sensitivity of Colorectal Cancer Cells to Radiotherapy by Reducing the DNA Damage Response

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Current Medical Science 2024年第3期44卷 545-553页

作者： Shi-gui pANG Xin ZHANG Zhao-xin LI Li-fei HE Feng CHEN Ming-long LIU Ying-ze HUANG Jian-mei MO Kong-lan LUO juan-juan XIAO Feng ZHU Department of Oncology The Affiliated Hospital of Guilin Medical UniversityGuilin541001China Cancer Research Institute The Affiliated Hospital of Guilin Medical UniversityGuilin541001China Translational Medical Center Huaihe HospitalHenan UniversityKaifeng475000China Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair The Affiliated Hospital of Guilin Medical UniversityGuilin541001China

Objective Abnormal expression of T-lymphokine-activated killer cell-originated protein kinase(TOpK)was reported to be closely related to the resistance of prostate cancer to radiotherapy and to targeted drug resistance in lung ***,the role of TOpK inhibition in enhancing radiosensitivity of colorectal cancer(CRC)cells is *** study aimed to evaluate the radiosensitization of TOpK knockdown in CRC *** The expression of TOpK was detected in CRC tissues by immunohistochemistry,and the effect of TOpK knockdown was detected in CRC cells by Western ***-8 and clonogenic assays were used to detect the growth and clonogenic ability of CRC cells after TOpK knockdown combined with radiotherapy in CRC ***,proteomic analysis showed that the phosphorylation of TOpK downstream proteins changed after *** damage was detected by the comet *** in the DNA damage response signaling pathway were analyzed by Western blotting,and apoptosis was detected by flow *** The expression of TOpK was significantly greater in CRC tissues at grades 2–4 than in those at grade *** irradiation,CRC cells with genetically silenced TOpK had shorter comet tails and reduced expression levels of DNA damage response-associated proteins,including phospho-cyclin-dependent kinase 1(p-CDK1),phospho-ataxia telangiectasia-mutated(p-ATM),poly ADp-ribose polymerase(pARp),and meiotic recombination 11 homolog 1(MRE11).Conclusions TOpK was overexpressed in patients with moderately to poorly differentiated ***,TOpK knockdown significantly enhanced the radiosensitivity of CRC cells by reducing the DNA damage response.

关键词： T-lymphokine-activated killer cell-originated protein kinase colorectal cancer DNA damage response radiosensitivity

Antioxidant and anti-inflammatory injectable hydrogel microspheres for in situ treatment of tendinopathy

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Regenerative Biomaterials 2024年第3期3卷 92-104页

作者： Qibin Han Lang Bai Yinhua Qian Xiaoyu Zhang juan Wang Jing Zhou Wenguo Cui Yuefeng Hao Xing Yang Department of Orthopedics The Affliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical University Suzhou215008P.R.China Department of Orthopedics Kunshan Hospital of Traditional Chinese MedicineSuzhou 215300P.R.China Department of Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025P.R.China

Tendinopathy is a common disorder that causes local dysfunction and reduces quality of *** research has indicated that alterations in the inflammatory microenvironment play a vital role in the pathogenesis of ***,injectable methacrylate gelatin(GelMA)microspheres(GM)were fabricated and loaded with heparin-dopamine conjugate(HDC)and hepatocyte growth factor(HGF).GM@HDC@HGF were designed to balance the inflammatory microenvironment by inhibiting oxidative stress and inflammation,thereby regulating extracellular matrix(ECM)metabolism and halting tendon *** growth factors with heparin was expected to improve the encaption,the catechol groups on dopamine have adhesion and antioxidant properties,allowing potential attachment at the injured site,and better function synergized with ***@HDC@HGF injected in situ in rat Achilles tendinopathy(AT)models significantly downregulated oxidative stress and inflammation,and ameliorated ECM *** conclusion,the multifunctional platform developed presents a promising alternative for the treatment of tendinopathy.

关键词： tendinopathy oxidative stress inflammation microspheres

problem-solving model guided by stimulus-organism-response theory:State of mind and coping styles of depressed mothers after cesarean delivery

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World Journal of psychiatry 2024年第6期14卷 945-953页

作者： Rui-Fang Yuan Mei-Qin Jiang juan Li Jing-Jing Zhang Department of Gynecology and Obstetrics Jiangyin People's HospitalJiangyin 214400Jiangsu ProvinceChina Department of Gynecology The Fifth People's Hospital of WuxiWuxi 214000Jiangsu ProvinceChina Obstetrics and Gynecology Ward II Jiangnan University Affiliated HospitalWuxi 214131Jiangsu ProvinceChina

BACKGROUND The use of a problem-solving model guided by stimulus-organism-response(SOR)theory for women with postpartum depression after cesarean delivery may inform nursing interventions for women with postpartum *** To explore the state of mind and coping style of women with depression after cesarean delivery guided by SOR *** Eighty postpartum depressed women with cesarean delivery admitted to the hospital between January 2022 and October 2023 were selected and divided into two groups of 40 cases each,according to the random number table *** the control group,the observation group adopted the problem-solving nursing model under SOR *** two groups were consecutively intervened for 12 weeks,and the state of mind,coping styles,and degree of post-partum depression were analyzed at the end of the *** The Edinburgh postnatal Depression Scale and Hamilton Depression Scale-24-item scores of the observation group were lower than in the control group after care,and the level of improvement in the state of mind was higher than that of the control group(pping with illness in the observation group after care(26.48±3.35)was higher than that in the control group(21.73±3.20),and the level of avoidance(12.04±2.68)and submission(8.14±1.15)was lower than that in the control group(15.75±2.69 and 9.95±1.20),with significant differences(ppting the problem-solving nursing model using SOR theory for postpartum depressed mothers after cesarean delivery reduced maternal depression,improved their state of mind,and coping level with illness.

关键词： Stimulus-organism-response theory problem solving model Cesarean section postpartum depression