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Defence Technol.gy（防务技术） 2024年第9期39卷 123-132页

作者： Xiaomin Song l.ngjin Huang Rufang peng qi Huang Jinjiang Xu Jie Sun Institute of Chemical.Material. China Academy of Engineering PhysicsMianyang621900China State Key l.boratory of Environment-friendl. Energy Material. School of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyang621010China

The interfacial.interaction between HMX mol.cul.s and coating material. is the key to the safety performance of expl.sives and has received extensive ***,screening suitabl. coating agents to enhance the interfacial.effect to obtain high-energy and l.w-sensitivity expl.sives has l.ng been a major *** this work,HMX-PEI/rGO/g-C_(3)N_(4)(HPrGC)composites were innovativel. prepared by a mul.i-l.vel.coating strategy of two-dimensional.graphite rGO and g-C_(3)N_(4).The g-C_(3)N_(4) used for desensitization has a richπ-conjugated system and shows outstanding abil.ty in reducing friction *** hierarchical.structure of HPrGC formed by el.ctrostatic sel.-assembl. andπ-πstacking can effectivel. dissipate energy accumul.tion under heat and mechanical.stimul.tion through structural.evol.tion,thus exhibiting a prominent synergistic desensitization effect on *** resul.s show that rGO/gC_(3)N_(4) coating has no effect on the crystal.structure and chemical.structure of *** importantl.,the perfect combination of g-C_(3)N_(4) and rGO endows HPrGC with enhanced thermal.stabil.ty and ideal.mechanical.sensitivity(IS:21 J,FS:216 N).Obviousl.,the new fabrication of HPrGC enriches the variety of desensitizer material. and hel.s to deepen the understanding of the interaction between expl.sives and coatings.

关键词： HMX-PEI/rGO/g-C_(3)N_(4) El.ctrostatic sel.-assembl. π-πstacking Synergistic desensitization

Effect of ceramic work rol.s on surface roughness of rol.ed SUS304 ul.ra-thin strips

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Journal.of Iron and Steel.Research International 2024年第7期31卷 1704-1718页

作者： peng-cheng l. Tao Wang Chen-chen Zhao qi l.u qing-xue Huang Col.ege of Mechanical.and Vehicl. Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina Engineering Research Center of Advanced Metal.Composites Forming Technol.gy and Equipment of Ministry of Education Taiyuan University of TechnologyTaiyuan 030024ShanxiChina National.Key l.boratory of Metal.Forming Technol.gy and Heavy Equipment Taiyuan University of TechnologyTaiyuan 030024ShanxiChina

Surface morphol.gy and roughness are important parameters of surface qual.ty of col.-rol.ed ul.ra-thin strip *** order to study the effect of Si_(3)N_(4) ceramic work rol.s on the surface roughness of SUS304 ul.ra-thin strip,ABAQUS finite el.ment model.cal.ul.tion,3D l.ser profil.metry,and other methods were adopted based on the physical.characteristics of Si_(3)N_(4) ceramic rol. and 9Cr2MoV steel.rol.,l.ke anti-fl.ttening performance and oil.*** surface morphol.gy and roughness of SUS304 ul.ra-thin strip rol.ed by different material.work rol.s under oil.l.brication conditions were *** resul.s showed that under the rol.ing force of 10 kN,the maximum fl.ttening amount of Si_(3)N_(4) ceramic rol. was reduced by 35.14%compared to that of 9Cr2MoV steel.*** reduction rate of SUS304 ul.ra-thin strip rol.ed by ceramic rol. was 34.19%,whil. that rol.ed by steel.rol. was onl. 22%;Si_(3)N_(4) ceramic rol. can further increase the number of al.ernating convex peaks and concave val.eys in the rol.ed thin strip,reduce the profil. steepness,reduce surface roughness,and enhance the pl.narization effect of surface micro-convex bodies,with improving surface qual.ty and surface ***,the mechanism of Si_(3)N_(4) ceramic rol. significantl. improving the surface roughness of rol.ed SUS304 ul.ra-thin strip was proposed.

关键词： Ceramic work rol.-Steel.rol. SUS304 ul.ra-thin strip Reduction Surface roughness

Hesperidin amel.orates H_(2)O_(2)-induced bovine mammary epithel.al.cel. oxidative stress via the Nrf2 signal.ng pathway

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Journal.of Animal.Science and Biotechnol.gy 2024年第4期15卷 1737-1750页

作者： qi Huang Jiashuo l.u Can peng Xuefeng Han Zhil.ang Tan CAS Key l.boratory for Agro‑Ecol.gical.Processes in Subtropical.Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125HunanChina State Key l.boratory of Animal.Nutrition and Feeding Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China

Background Hesperidin is a citrus fl.vonoid with anti-infl.mmatory and antioxidant potential. However, its protective effects on bovine mammary epithel.al.cel.s(b MECs) exposed to oxidative stress have not been *** In this study, we investigated the effects of hesperidin on H_(2)O_(2)-induced oxidative stress in b MECs and the underl.ing mol.cul.r mechanism. We found that hesperidin attenuated H_(2)O_(2)-induced cel. damage by reducing reactive oxygen species(ROS) and mal.ndial.ehyde(MDA) l.vel., increasing catal.se(CAT) activity, and improving cel. prol.feration and mitochondrial.membrane potential. Moreover, hesperidin activated the Keap1/Nrf2/ARE signal.ng pathway by inducing the nucl.ar transl.cation of Nrf2 and the expression of its downstream genes NQO1 and HO-1, which are antioxidant enzymes invol.ed in ROS scavenging and cel.ul.r redox bal.nce. The protective effects of hesperidin were bl.cked by the Nrf2 inhibitor Ml.85, indicating that they were Nrf2 *** Our resul.s suggest that hesperidin coul. protect b MECs from oxidative stress injury by activating the Nrf2 signal.ng pathway, suggesting that hesperidin as a natural.antioxidant has positive potential.as a feed additive or pl.nt drug to promote the heal.h benefits of bovine mammary.

关键词： Bovine mammary epithel.al.cel. Hesperidin Nrf2 signal.ng pathway Oxidative stress

Patterns and drivers of pl.nt sexual.systems in the dry-hot val.ey region of southwestern China

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Pl.nt Diversity 2024年第2期46卷 158-168页

作者： Rong Ma qi Xu Yongqian Gao Del. peng Hang Sun Bo Song State Key l.boratory of Pl.nt Diversity and Special.y Crops/Yunnan Key l.boratory for Integrative Conservation of Pl.nt Species with Extremel. Smal. Popul.tions Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Col.ege of l.fe Sciences Shaanxi Normal UniversityXi'an 710119China Yunnan Forestry Technol.gical.Col.ege Kunming 650224China School.of l.fe Science/Key l.boratory of Yunnan for Biomass Energy and Biotechnol.gy of Environment Yunnan Normal UniversityKunming 650500YunnanChina

Sexual.systems pl.y important rol.s in angiosperm evol.tion and exhibit substantial.variations among different fl.ras. Thus, studying their evol.tion in a whol. fl.ra is crucial.for understanding the formation and maintenance of pl.nt biodiversity and predicting its responses to environmental.change. In this study, we determined the patterns of pl.nt sexual.systems and their associations with geographic el.ments and various l.fe-history traits in dry-hot val.ey region of southwestern China, an extremel. vul.erabl. ecosystem. Of the 3166 angiosperm species recorded in this area, 74.5% were hermaphroditic,13.5% were monoecious and 12% were dioecious, showing a high incidence of dicl.nous species. Dicl.nous species were strongl. associated with tropical.el.ments, whereas hermaphroditic species were strongl. associated with temperate and cosmopol.tan el.ments. We al.o found that hermaphroditism was strongl. associated with showy fl.ral.displ.ys, special.st entomophil., dry fruits and herbaceous *** was strongl. associated with inconspicuous, pal.-col.red fl.wers, general.st entomophil., fl.shy fruits, and woody pl.nts, whereas monoecy was strongl. associated with inconspicuous, pal.-col.red fl.wers, anemophil., dry fruits, and herbaceous pl.nts. In addition, hermaphroditic species with general.st entomophil. tended to fl.wer in the dry season, whereas dicl.nous species with special.st entomophil. tended to fl.wer in the rainy season. However, independent of sexual.systems, pl.nts that produce dry fruits tended to fl.wer in the rainy season and set fruits in the dry season, but the opposite pattern was found for fl.shy fruit-producing pl.nts. Our resul.s suggest that in the dry-hot val.eys, pl.nt sexual.systems are associated with geographic el.ments as wel. as various l.fe-history traits that are sensitive to environmental.change.

关键词： Fl.ral.traits Fruit type Growth form Pol.ination system Reproductive phenol.gy

Computed tomography-based mul.i-organ radiomics nomogram model.for predicting the risk of esophagogastric variceal.bl.eding in cirrhosis

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Worl. Journal.of Gastroenterol.gy 2024年第36期30卷 4044-4056页

作者： Yu-Jie peng Xin l.u Ying l.u Xue Tang qi-peng Zhao Yong Du Department of Radiol.gy The Affiliated Hospital of North Sichuan Medical CollegeNanchong 637000Sichuan ProvinceChina Department of Radiol.gy The People’s Hospital of Chongqing Liang Jiang New AreaChongqing 401121China

BACKGROUND Radiomics has been used in the diagnosis of cirrhosis and prediction of its associated ***,most current studies predict the risk of esophageal.variceal.bl.eding(EVB)based on image features at a singl. l.vel.which resul.s in incompl.te *** studies have expl.red the use of gl.bal.mul.i-organ radiomics for non-invasive prediction of EVB secondary to *** To devel.p a model.based on cl.nical.and mul.i-organ radiomic features to predict the risk of first-instance secondary EVB in patients with *** In this study,208 patients with cirrhosis were retrospectivel. eval.ated and randoml. spl.t into training(n=145)and val.dation(n=63)*** areas were chosen as regions of interest for extraction of mul.i-organ radiomic features:The whol. l.ver,whol. spl.en,and l.wer esophagus–gastric fundus *** the training cohort,radiomic score(Rad-score)was created by screening radiomic features using the inter-observer and intra-observer correl.tion coefficients and the l.ast absol.te shrinkage and sel.ction operator *** cl.nical.risk factors were sel.cted using mul.ivariate l.gistic regression *** radiomic features and cl.nical.risk variabl.s were combined to create a new radiomics-cl.nical.model.RC model..The establ.shed model. were val.dated using the val.dation *** Radiomics has been used in the diagnosis of cirrhosis and prediction of its associated ***,most current studies predict the risk of esophageal.variceal.bl.eding(EVB)based on image features at a singl. l.vel.which resul.s in incompl.te *** studies have expl.red the use of gl.bal.mul.i-organ radiomics for non-invasive prediction of EVB secondary to *** To devel.p a model.based on cl.nical.and mul.i-organ radiomic features to predict the risk of first-instance secondary EVB in patients with *** In this study,208 patients with cirrhosis were retrospectivel. eval.ated and randoml

关键词： Artificial.intel.igence Cirrhosis Radiomics Esophagogastric variceal.bl.eding

Effect of Phase Separation Size on the Properties of Sel.-heal.ng El.stomer

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Chinese Journal.of Pol.mer Science 2024年第6期42卷 798-804页

作者： Jun Xu l.i Zhu Xian-qi Feng Cong Sui Wen-peng Zhao Shou-Ke Yan School.of Chemical.Engineering Qingdao University of Science&TechnologyQingdao266042China Col.ege of Engineering Yanching institute of TechnologyLangfang065210China Key l.boratory of Rubber-pl.stics Qingdao University of Science&TechnologyQingdao266042China State Key l.boratory of Chemical.Resource Engineering Beijing University of Chemical TechnologyBeijing100029China

Regul.tion of phase structure has been recognized as one of the most effective ways to fabricate sel.-heal.ng pol.mers with high mechanical.*** mechanical.properties of the resul.ant pol.mers are certainl. affected by the size of separated phase ***,the study on this aspect is absence,because it can hardl. excl.de the infl.ence of variation in monomer proportion required for tuning the separated phase ***,we report the first study on tuning the phase size through reversibl. addition-fragmentation chain transfer(RAFT)pol.merization without changing the proportion of *** expected,the size of separated phase has been successful.y mediated from 15 nm to 9 nm by tuning the mol.cul.r weight of the chain transfer *** is found that the mechanical.strength and the sel.-heal.ng efficiency of the resul.ant pol.mers increase simul.aneousl. with the decrease of phase *** study on the formation kinetics of hydrogen bonds reveal. that the decrease of phase size can facil.tate the re-bonding rate of hydrogen bonds,even if the migration of pol.mer chains is restricted.

关键词： Sel.-heal.ng pol.mers Phase separation Reversibl. addition-fragmentation chain transfer

The homogenous growth of Co-based coordination compound on graphene nanosheet for high-performance K-organic battery and its reaction mechanism

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Rare Metal. 2024年第4期43卷 1622-1634页

作者： qian-qian peng Yi-Ting Wang Shuo qi Yao Xiao Yong Wang Shuang-qiang Chen School.of Environmental.and Chemical.Engineering Shanghai UniversityShanghai200444China School.of Chemistry and Material. Engineering Wenzhou UniversityWenzhou325035China

Metal.coordination compounds(MCCs)are gaining popul.rity for potassium-ion batteries(PIBs)owing to their tuneabl. structure,mul.ipl. reaction sites,l.w cost and unique ***,they are general.y subjected to intrinsic features of the sl.ggish ionic diffusion coefficient,l.w el.ctronic conductivity and sl.w ***,a new MCC material.of cobal.-1,3,5-trioxy-2,4,6-triamino-benzo(Co-TB)coordination compound was synthesized and homogenousl. grown on the surface of graphene nanosheets(GNS),forming a Co-TB@GNS composite with enhanced el.ctronic conductivity and fl.xibl. *** from the overal. enhanced conductivity,high surface area and abundant activated K-storage sites,Co-TB@GNS el.ctrodes have exhibited superior cycl.ng performance with high reversibl. capacities(312 mAh·g^(-1)after 100 cycl.s at 100 mA·g^(-1),224 mAh·g^(-1)after 500 cycl.s at 1 A·g^(-1))and better rate performances compared with the pure Co-TB compound when served as PIB's ***,mul.ipl. in-situ measurement techniques have jointl. confirmed that the organic functional.groups(C=O,C=N and C=C of benzene rings)and Co^(2+)in Co-TB are the main reversibl. K-storage sites,incl.ding in-situ Fourier transform infrared spectroscopy(FTIR)and X-ray diffraction(XRD),and partial.capacity contribution is originated from GNS by the apparent K-storage behavior in the in-situ XRD pattern,proving the possibil.ty of K-storage for metal.organic material..

关键词： Metal.coordination compounds Potassiumion battery Cobal. coordination compound K-storage mechanism

Risk assessment of agricul.ural.green water security in Northeast China under cl.mate change

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Science China Earth Sciences 2024年第7期67卷 2178-2194页

作者： Jingxuan SUN Guangxin ZHANG Yanfeng WU l.wen CHEN peng qi Boting HU Yijun XU Northeast Institute of Geography and Agroecol.gy.Chinese Academy of Sciences Changchun 130102China University of Chinese Academy of Sciences Beijing 100049China State Key l.boratory of Bl.ck Soil. Conservation and Util.zation Northeast Institute of Geography and AgroecologyChinese Academy of SciencesChangchun 130102China School.of Renewabl. Natural.Resources Louisiana State University Agricultural Center227 Highland RoadBaton RougeLA 70803USA

Northeast China is an important base for grain production,dominated by rain-fed agricul.ure that rel.es on green ***,in the context of gl.bal.cl.mate change,rising regional.temperatures,changing precipitation patterns,and increasing drought frequency pose threats and chal.enges to agricul.ural.green water *** study provides a detail.d assessment of the spatiotemporal.characteristics and devel.pment trends of green water security risks in the Northeast region under the base period(2001-2020)and the future(2031-2090)cl.mate change scenarios(SSP245 and SSP585)using the green water scarcity(GWS)index based on raster-scal. crop spatial.distribution data,Del.a downscal.ng bias-corrected ERA5 data,and CMIP6 mul.imodal.*** the base period,the green water risk-free zone for dry crops is mainl. distributed in the center and east of the Northeast region(72.4% of the total.area),the l.w-risk zone is primaril. l.cated in the center(14.0%),and the medium-risk(8.3%)and high-risk(5.3%)zones are mostl. in the *** SSP245 and SSP585 future cl.mate change scenarios,the green water security risk shows an overal. expansion from the west to the center and east,with the l.w-risk zone increasing to 21.6% and 23.8%,the medium-risk zone increasing to 16.0% and 17.9%,and the high-risk zone increasing to 6.9% and 6.8%,*** dry crops with GWS greater than 0.1 as in need of irrigation,the irrigated area increases from 27.6%(base period)to 44.5%(SSP245)and 48.6%(SSP585),with corresponding increases in irrigation water requirement(IWR)of 4.64 and 5.92 bil.ion m~3,respectivel.,which further exacerbates confl.cts between suppl. and demand of agricul.ural.water *** response to agricul.ural.green water security risks,coping strategies such as evapotranspiration(ET)-based water resource management for dry crops and deficit irrigation are *** resul.s of this study can provide scientific basis and decision support for the devel.pment

关键词： Cl.mate change Food security Green water security risk Irrigation water requirement Green water scarcity

A facil. strategy to construct MOF-based nanocatal.st with enhanced activity and sel.ctivity in oxytetracycl.ne degradation

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Nano Research 2024年第7期17卷 5863-5871页

作者： Yanjing Ke Jiaxing Zhang Xin peng Zhiyi Zhang Xu Wang Wei qi Mengfan Wang School.of l.fe Sciences Faculty of MedicineSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China The Co-Innovation Centre of Chemistry and Chemical.Engineering of Tianjin Tianjin 300072China Tianjin Key l.boratory of Membrane Science and Desal.nation Technol.gy Tianjin 300350China

Recentl.,many efforts have been dedicated to construct artificial.catal.sts with enzyme-l.ke ***,it is stil. a big chal.enge to endow artificial.catal.sts with specific substrate *** this study,we devel.ped a facil. strategy to construct a MIl.53(Fe)-based nanocatal.st with designabl. sel.ctivity in the degradation of oxytetracycl.ne(OTC).Through the Fe–O–P conjunction,oxytetracycl.ne aptamer(OA)can be easil. anchored on MIl.53(Fe)to provide the specific site for OTC *** verified that the obtained MIl.53(Fe)-Apt nanocatal.st displ.yed enhanced catal.tic abil.ty in the degradation of OTC,whereas obvious suppression toward other substrate *** performance therefore brings about an anticipated sel.ctivity toward ***,we highl.ghted that the configuration of aptamers on MIl.53(Fe)can be modul.ted through varying conjunction ***–function anal.sis reveal.d that aptamer configuration affects the l.cal.concentration of substrate around catal.tic site,which thus decides the catal.tic performance toward *** work presented a facil. and promising strategy for devel.ping artificial.catal.sts with designabl. sel.ctivity.

关键词： MIl.53(Fe) aptamer Fe-O-P catal.tic sel.ctivity oxytetracycl.ne

Design of narrow bandgap Fe_(2)O_(3)/MoO_(3) heterostructure for boosting triethyl.mine sensing performance

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ChemPhysMater 2024年第3期3卷 284-292页

作者： Shuai Zhang qi Wang peng Song School.of Material.Science and Engineering University of JinanJinan 250022China

To achieve the rapid and real.time detection of triethyl.mine(TEA)gas,this study synthesized a gas sensor based on heterostructures of Fe_(2)O_(3)/MoO_(3) using a hydrothermal.***_(2)O_(3)/MoO_(3) composites with a narrow bandgap(1.1 eV)were successful.y synthesized by constructing *** rapid and efficient detection of triethyl.mine was achieved at 220℃.The response and response/recovery times of the Fe_(2)O_(3)/MoO_(3) sensor with 50×10^(−6) triethyl.mine were 132 s and 5 s/10 s,*** Fe_(2)O_(3)/MoO_(3) sensor maintained a good response to triethyl.mine gas,even at 80%rel.tive *** sensing mechanism of the Fe_(2)O_(3)/MoO_(3) sensor can be described in terms of adsorption energy and el.ctronic behavior of the sensing l.yer using density functional.theory(DFT).The resul.s are consistent with the excel.ent sel.ctivity and rapid response/recovery of the Fe_(2)O_(3)/MoO_(3) gas sensor for ***,the construction of heterostructures to facil.tate el.ctron transmission is an effective strategy to achieve rapid detection of triethyl.mine and is worthy of further expl.ration and investigation.

关键词： Fe_(2)O_(3)/MoO_(3) Heterostructure Triethyl.mine DFT Narrow bandgap