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Combined Impacts of Warm Central Equatorial Pacific Sea Surface Temperatures and Anthropogenic Warming on the 2019 Severe drought in East China

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Advances in Atmospheric Sciences 2020年第11期37卷 1149-1163页

作者： Shuangmei MA Congwen ZHU juan LIU State Key Laboratory of Severe Weather(LASW)and Institute of Climate System Chinese Academy of Meteorological SciencesBeijing 100081China Meteorological Service Center of Zhejiang Hangzhou 310016China

A severe drought occurred in East China(EC)from August to October 2019 against a background of long-term significant warming and caused widespread impacts on agriculture and society,emphasizing the urgent need to understand the mechanism responsible for this drought and its linkage to global *** results show that the warm central equatorial Pacific(CEP)sea surface temperature(SST)and anthropogenic warming were possibly responsible for this drought *** warm CEP SST anomaly resulted in an anomalous cyclone over the western North Pacific,where enhanced northerly winds in the northwestern sector led to decreased water vapor transport from the South China Sea and enhanced descending air motion,preventing local convection and favoring a precipitation deficiency over *** simulations in the Community Earth System Model Large Ensemble Project confirmed the physical connection between the warm CEP SST anomaly and the drought in *** extremely warm CEP SST from August to October 2019,which was largely the result of natural internal variability,played a crucial role in the simultaneous severe drought in *** model simulations showed that anthropogenic warming has greatly increased the frequency of extreme droughts in *** indicated an approximate twofold increase in extremely low rainfall events,high temperature events,and concurrently dry and hot events analogous to the event in ***,the persistent severe drought over EC in 2019 can be attributed to the combined impacts of warm CEP SST and anthropogenic warming.

关键词： drought East China central equatorial Pacific SST global warming model simulations

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Protective effect of topiramate on hypoxic-ischemic brain injury in neonatal rat

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Asian Pacific Journal of Tropical Medicine 2014年第6期7卷 496-500页

作者： Hong Jiang juan-juan Lei Yi-He Zhang Neonatal department Affiliated Hospital of Yan'an University of Shaanxi Province

Objective:To explore protective effeet of topiramate(TPM) on hypoxic—ischemic brain ***:A total of 360 neonatal rats were seleeted then randomly divided into sham operation group,ischemia and hypoxia group,conventional treatment group and degradation therapy group(n=90).After surgical treatment,sham and ischemic hypoxia group were treat with normal saline:conventional treatment group was received Tl'M solution 100 mg/kg.2 times/d:degradation therapy group received TPM solution 150 mg/kg.2 times/*** 3 d treatment each dosage was reduced 50 mg/*** lowest reduced to 50 mg/*** groups received continuous treatment for 10 *** treatment for 1 d.4 d.7 d.10 d the cercbral edema,neuron-specific enolase(NSE)and γ-aminobutyric acid(GABA) levels and cognitive abilities of four groups were ***:After 1d.4d of treatment,the brain water conlenl and NSE levels in ischemia and hypoxia group,the conventional treatment group and the degradation therapy group were significantly higher than that in sham group(Pd NSE levels of the conventional treatment group and the degradation therapy group were significantly lower than that in the ischemic hypoxia group(Pd learning ability of the ischemia and hypoxia group,the conventional treatment group and degradation therapy group were significantly lower than the sham group(Pd learning ability of the conventional treatment group and degradation therapy group were significantly higher than the ischemia and hypoxia group(Pd.10 d of treatment,the brain water content and NSE levels in the sham operation group,the conventional treatment group and degradation therapy group were significantly lower than the ischemia and hypoxia group(Pd learning ability of these three groups were significantly higher than that in the ischemia and hypoxia group(P.the GABA levels in the conventional treatment

关键词： TPM Brain Injury NSE GABA

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Oscillatory Behavior of Third-order Nonlinear differential Equations with a Sublinear Neutral Term

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Acta Mathematicae Applicatae Sinica 2022年第2期38卷 484-496页

作者： Wen-juan LI Yuan-hong YU Mathematic and computer science College Chifeng UniversityChifeng 024000China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China

The authors present some new criteria for oscillation and asymptotic behavior of solutions of third-order nonlinear differential equations with a sublinear neutral term of the form(r(t)(z"(t))α)+∫_(c)^(d)q(t,ξ)f(x(σ(t,ξ)))dξ=0,t≥t_(0) where z(t)=x(t)+∫_(a)^(b)p(t,ξ)x^(γ)(τ(t,ξ))dξ,0ditions∫_(t_(0)-1)^(∞)r^(-1/α)(t)dt=∞or∫_(t0)^(∞)r^(-1/α)(t)dtd here extend,improve and complement to some known results in the *** are provided to illustrate the theorems.

关键词： oscillatory behavior neutral differential equation third-order

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Serrated plastic flow behavior and microstructure in a Zr-based bulk metallic glass processed by surface mechanical attrition treatment

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Journal of Iron and Steel Research International 2017年第4期24卷 475-482页

作者： juan-juan Liu Qing Wang Kang Sun Sebastien Gravier Jean-jacque Blandin Bao-an Sun Jian Lu Laboratory for Microstructures Institute of MaterialsShanghai UniversityShanghai 200072China department of Mechanical and Biomedical Engineering City University of Hong Kong Science et Ingenierie des Matériaux et des Procédés(SIMAP) University of Grenoble/CNRSGrenoble-INPSaint-Martin d'Heres Cedex 38402France

The serrated plastic flow,microstructure and residual stress of a Zr_（55）Cu_（30）Ni_5Al_（10） bulk metallic glass（BMG）undergone surface mechanical attrition treatment（SMAT）have been investigated by a combination of compression tests with scanning electron microscopy（SEM）,high resolution transmission electron microscopy（HRTEM）and the incremental hole-drilling strain-gage *** is found that SMAT leads to various microstructural modifications and residual stress distribution in the surface layers of the Zrbased BMG due to the mechanically-induced nanocrystallization and generation of shear *** a result,the BMG alloy exhibits a remarkable work-hardening like behavior and significant increase of plastic strain from less than 1%to 15%,and its plastic deformation dynamics yields a power-law distribution of shear *** upon the analysis of the experimental results,it is indicated that this can be connected to the SMAT-induced microstructural modifications and the resulting residual compressive stress in the Zr-based BMG.

关键词： Bulk metallic glass Surface mechanical attrition treatment Serrated flow Microstructure Residual stress

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Analysis and design of Scheduling Schemes for Wireless Networks with Unsaturated Traffic

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China Communications 2021年第2期18卷 65-85页

作者： Jianfei Li juan Wen Min Sheng State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China

Scheduling schemes assign limited resources to appropriate users,which are critical for wireless network *** current schemes have been designed based on saturated traffic,i.e.,assuming users in networks always have data to ***,the user buffer may sometimes be empty in actual ***,these algorithms will allocate resources to users having no data to transmit,which results in resource *** view of this,we propose new scheduling schemes for onehop and two-hop link scenario with unsaturated ***,this paper analyzes their key network performance indicators,including the average queue length,average throughput,average delay and outage *** two scheduling algorithms avoid scheduling the links whose buffers are empty and thus improve the network resource *** the one-hop link scenario,network provides differentiated services via adjusting the scheduling probabilities of the destination nodes(dNs)with different *** the dNs with same priority,the node with higher data arrival rate has larger scheduling *** the two-hop link scenario,we prioritize the scheduling of relay-to-destination(R-d)link and dynamically adjust the transmission probability of source-to-relay(S-R)link,according to the length of remaining *** experiment results show the effectiveness and advantage of the proposed algorithms.

关键词： markov chain unsaturated traffic performance analysis scheduling

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Asymmetric cell division in plant development

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Journal of Integrative Plant Biology 2023年第2期65卷 343-370页

作者： Yi Zhang Tongda Xu juan dong Plant Synthetic Biology Center Haixia Institute of Science and Technologyand College of Life SciencesFujian Agriculture and Forestry UniversityFuzhou 350002 China The Waksman Institute of Microbiology Rutgersthe State University of New JerseyPiscatawayNJ 08854USA department of Plant Biology Rutgersthe State University of New JerseyNew BrunswickNJ 08891USA

Asymmetric cell division(ACd) is a fundamental process that generates new cell types during development in eukaryotic *** plant development,post-embryonic organogenesis driven by ACd is universal and more important than in animals,in which organ pattern is preset during ***,plant development provides a powerful system to study molecular mechanisms underlying *** the past decade,tremendous progress has been made in our understanding of the key components and mechanisms involved in this important process in ***,we present an overview of how ACd is determined and regulated in multiple biological processes in plant development and compare their conservation and specificity among different model cell *** also summarize the molecular roles and mechanisms of the phytohormones in the regulation of plant ***,we conclude with the overarching paradigms and principles that govern plant ACd and consider how new technologies can be exploited to fill the knowledge gaps and make new advances in the field.

关键词： asymmetric cell division peptide signaling phytohormonal signaling polarity proteins plant development transcription factors

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Cauchy matrix structure of the Mel’nikov model of long-short wave interaction

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Communications in Theoretical Physics 2020年第12期72卷 83-93页

作者： Hong-juan Tian da-Jun Zhang department of Mathematics Shanghai UniversityShanghai 200444China

We propose a systematic method to construct the Mel’nikov model of long–short wave interactions,which is a special case of the Kadomtsev–Petviashvili(KP)equation with self-consistent sources(KPSCS).We show details how the Cauchy matrix approach applies to Mel’nikov’s model which is derived as a complex reduction of the *** a new result wefind that in the dispersion relation of a 1-soliton there is an arbitrary time-dependent function that has previously not reported in the literature about the Mel’nikov *** function brings time variant velocity for the long wave and also governs the short-wave *** variety of interactions of waves resulting from the time-freedom in the dispersion relation is illustrated.

关键词： Mel’nikov model of long–short wave interaction Cauchy matrix approach self-consistent sources KP equation

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decomposition characteristics of organic materials and their effects on labile and recalcitrant organic carbon fractions in a semi-arid soil under plastic mulch and drip irrigation

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Journal of Arid Land 2018年第1期10卷 115-128页

作者： hu juan wu jinggui qu xiaojing college of resource and environmental science jilin agricultural universityChangchun 130118China

Labile organic carbon （LC） and recalcitrant organic carbon （RC） are two major fractions of soil organic carbon （SOC） and play a critical role in organic carbon turnover and sequestration. The aims of this study were to evaluate the variations of LC and RC in a semi-arid soil （Inner Mongolia, China） under plastic mulch and drip irrigation after the application of organic materials （OMs）, and to explore the effects of OMs from various sources on LC and RC by probing the decomposition characteristics of OMs using in-situ nylon mesh bags burying method. The field experiment included seven treatments, i.e., chicken manure （CM）, sheep manure （SM）, mushroom residue （MR）, maize straw （MS）, fodder grass （FG）, tree leaves （TL） and no OMs as a control （CK）. Soil LC and RC were separated by Huygens d＇s method （particle size-density）, and the average soil mass recovery rate and carbon recovery rate were above 95%, which indicated this method was suitable for carbon pools size analysis. The LC and RC contents significantly （P〈0.01） increased after the application of OMs. Moreover, LC and RC contents were 3.2%-8.6% and 5.0%-9.4% higher in 2016 than in 2015. The applications of CM and SM significantly increased （P〈0,01） LC content and LC/SOC ratio, whereas they were the lowest after the application of TL. However, SOC and RC contents were significantly higher （P〈0.01） after the applications of TL and MS. The correlation analysis indicated the decomposition rate of OMs was positively related with LC content and LC/SOC ratio. In addition, lignin, polyphenol, WOM （total water-soluble organic matter）, WHA （water-soluble humic acid）, HSL （humicdike substance） and HAL （humic acid-like） contents in initial OMs played important roles in SOC and RC. In-situ nylon mesh bags burying experiment indicated the decomposition rates of CM, SM and MS were significantly higher than those of MR, FG, and TL. Furthermore, MS could result in more lignin derivatives, WHA, and HAL polymers in shorter time

关键词： organic materials labile organic carbon recalcitrant organic carbon decomposition characteristics plasticmulch drip irrigation Inner Mongolia

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Gene Expression Patterns in different Wool densities of Rex Rabbit Using cdNA Microarray

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Agricultural Sciences in China 2011年第4期10卷 595-601页

作者： CHEN Sai-juan LIU Tao LIU Ya-juan dONG Bing GU Zi-lin College of Animal Science and Technology Agricultural University ofHebei Baoding 071001 P.R. China Ringpu （Baoding） Biological Pharmaceutical Co. Ltd. Baoding 071000 P.R. China Mountain Area Research Institute Agricultural University of Hebei Baoding 071001 P.R.China division of Scientific Research Agricultural University of Hebei Baoding 071001 P.R.China

This study was carried out to identify gene expression patterns in different wool densities of rex rabbit. The mid-dorsal skin samples from 8 rex rabbits were studied. They were divided into two groups according to different wool densities. Total RNA was isolated and labeled by reverse transcription reaction with Cy5-dCTP and Cy3-dCTP for cdNA probe. The cdNA probe was hybridized with cdNA microarrays containing 14 601 rabbit’s genes. The differently expressed genes were analysed with the Gene Ontology （GO） classification and the pathway analysis. Hierarchical clustering was performed to clarify genes in association with different wool densities. The 2 657 differentially expressed genes were identified. Among them, 1 103 genes were functionally known genes, 687 genes were up-regulated and 419 were down-regulated. GO analysis indicated that these altered genes were associated with metabolism, signal transduction, cell cycle, cell adhesion, cell proliferation, cell division, apoptosis, and other processes. KEGG analysis showed that 95 signal pathways associated with up-regulated genes and 87 signal pathways associated with down-regulated genes had changed significantly （P0.05）. Some important differentially expressed genes in different wool densities of rex rabbit were identified, such as MMP2, TGF-β1, TGF-β2, IGF-1, ITGB1, RPS6KB1, BMP2, ActRIIB, CdK2, and CCNA2. Hierarchical clustering analysis separated the differentially expressed genes into 5 main characteristic groups. data from cdNA microarray experiments clearly distinguished between group A and group B. Some important genes were identified, which might be useful in further study on wool density markers of rex rabbit.

关键词： rex rabbit wool density gene expression cdNA microarray GO and KEGG analysis

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Physiological strategies of moult-migrating Black-necked Grebes(Podiceps nigricollis)in a polluted staging site according to blood chemistry

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Avian Research 2023年第3期14卷 453-459页

作者： juan A.Amat Nico Varo Marta I.Sanchez Andy J.Green damaso Hornero-Mendez juan Garrido-Fernandez Cristina Ramo departamento de Ecología y Evolucion Estacion Biologica de Donana(EBD-CSIC)41092SevillaSpain Independent researcher 41010SevillaSpain departamento de Biología de la Conservacion y Cambio Global Estacion Biologica de Donana(EBD-CSIC)41092SevillaSpain departamento de Fitoquímica de Alimentos Instituto de la Grasa(IG-CSIC)41013SevillaSpain

After breeding,Black-necked Grebes(Podiceps nigricollis)perform a moult-migration to autumn hypersaline staging sites,where they moult the flight feathers and forage on superabundant brine shrimp(Artemia spp.)before leaving for wintering *** the stay in moulting sites,the grebes experience changes in organs and muscle size(atrophy,hypertrophy),and almost double their body mass,which has been suggested to act as an insurance against a collapse in prey availability in late *** two years we collected blood samples from hundreds of individuals at one of the most important European moulting sites(the Odiel marshes,SW Spain),which is a highly polluted area due to mining drainage and chemical *** assessed the potential effect of moulting stage,day of the year and body condition on 16 blood biochemical *** of the changes in prey availability and body composition of grebes,we expected some physiological adjustments during *** levels of cholesterol suggested that birds in active moult increased foraging effort to face the costs of *** was increased amount of lactate dehydrogenase,corresponding to periods of breast muscle *** in active moult augmented protein ingestion,likely to account for the requirements of feather *** also show that the probability of fasting due to low prey availability increased late in the moulting season,as demonstrated by an increase in plasmaβ-hydroxy-butyrate.

关键词： Blood biochemistry Eared grebe Fasting Feather replacement Odiel marshes Waterbird

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