检索结果-南通市图书馆

The Crop Journal 2024年第3期12卷 880-887页

作者： Xiaoling Wang Jiawei cao Runhong Sun Wei {1. Lin Qi Peng Song Shenjiao Yang College of Agronomy Henan University of Science and TechnologyLuoyang 471003HenanChina Institute of Plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450099HenanChina Farmland Irrigation Research Institute Chinese Academy of Agricultural SciencesXinxiang 453000HenanChina

A two-year field experiment conducted under dryland conditions in semi-humid and drought-prone regions of china aimed to assess the effect of ammonia-oxidizing bacterial on maize water use efficiency and yield.A heterotrophic ammonia-oxidizing bacteria(HAOB)strain S2_8_1.was *** treatments were applied:(1.no irrigation+HAOB strain(DI),(2)no irrigation+blank culture medium(DM),(3)no irrigation control(DCK),(4)irrigation+HAOB(WI),(5)irrigation+blank culture medium(WM),and(6)irrigation control(WCK).Results revealed that HAOB treatment increased maize growth,yield,and water use efficiency over controls,regardless of whether the year was wet or *** improvement was attributed to the accelerated nitrification in the rhizosphere soil due to HAOB inoculation,which subsequently led to increased levels of leaf ***,these findings suggest that HAOB inoculation holds promise as a strategy to boost water use efficiency and maize productivity in dryland agriculture.

关键词： Heterotrophic ammonia-oxidizing bacteria Rhizosphere soil nitrification Cytokinin Maize Dryland agriculture

Enhancing Strength-Ductility Synergy of CoCrNi-Based Medium-Entropy Alloy Through Coherent L1.(2)Nanoprecipitates and Grain Boundary Precipitates

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 78-88页

作者： Leilei Li Kaikai Song Qingwei Gao Changshan Zhou Xiaoming liu Yaocen Wang Xiaojun Bai Chongde {1. School of Physical Science and Technology Northwestern Polytechnical UniversityXi’an710016China Weihai Research Institute of Industrial Technology Shandong UniversityWeihai264209China Research and Development Institute of Northwestern Polytechnical University in ShenzhenShenzhen518057China

The L1.(2)-strengthened Co_(34)Cr_(32)Ni_(27)Al_(4)Ti_(3)medium-entropy alloy(MEA)with precipitations of grain boundaries has been developed through selective laser melting(SLM)followed by cold rolling and annealing,exhibiting excellent strength-ductility *** as-printed alloy exhibits low yield strength(YS)of~384 MPa,ultimate tensile strength(UTS)of~453 MPa,and uniform elongation(UE)of 1.5%due to the existence of the SLM-induced *** cold rolling and annealing,the YS,UTS,and UE are significantly increased to~739 MPa,~1.30 MPa,and~47%,*** enhancement primarily originates from the refined grain structure induced by cold rolling and *** presence of coherent sphericalγ'precipitates(L1.(2)phases)and Al/Ti-rich precipitates at the grain boundaries,coupled with increased lattice defects such as dislocations,stacking faults,and ultrafine deformation twins,further contribute to the property’s *** study highlights the potential of SLM in producing high-strength and ductile MEA with coherent L1.(2)nanoprecipitates,which can be further optimized through subsequent rolling and annealing *** findings offer valuable insights for the development of high-performance alloys for future engineering applications.

关键词： Medium-entropy alloy Selective laser melting Precipitation Strength Ductility

Spatiotemporal evolution and assembly processes of ammonia-oxidizing prokaryotic communities in 1.000-year-old coastal reclaimed soils

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2024年第4期34卷 709-725页

作者： Sarfraz HUSSAIN Yifan YIN Senlin liu Shanshan YAN Dongjie CHEN Hui {1. Feng WANG Key Laboratory of Agricultural Environmental Microbiology Ministry of Agriculture and Rural AffairsCollege of Life SciencesNanjing Agricultural UniversityNanjing 210095China Institute of Eco-Environmental Sciences Ningbo Academy of Agricultural SciencesNingbo 315040China

Coastal marshes are transitional areas between terrestrial and aquatic *** are sensitive to climate change and anthropogenic *** recent decades,the reclamation of coastal marshes has greatly increased,and its effects on microbial communities in coastal marshes have been studied with great *** of these studies have explained the short-term spatiotemporal variation in soil microbial community ***,the impact of reclamation on the community composition and assembly processes of functional microbes(e.g.,ammonia-oxidizing prokaryotes)is often *** this study,using quantitative polymerase chain reaction and the Ion S5™XL sequencing platform,we investigated the spatiotemporal dynamics,assembly processes,and diversity patterns of ammonia-oxidizing prokaryotes in 1.00-year-old reclaimed coastal salt *** taxonomic and phylogenetic diversity and composition of ammonia oxidizers showed apparent spatiotemporal variations with soil *** null modelling-based analysis showed that across all sites,the archaeal ammonia-oxidizing community was assembled by a deterministic process(84.71.),and deterministic processes were also dominant(55.2%)for ammonia-oxidizing bacterial communities except for communities at 60 years of *** assembly process and nitrification activity in reclaimed soils were positively *** abundance of the amoA gene and changes in ammonia-oxidizing archaeal and bacterial diversities significantly affected the nitrification activity in reclaimed *** findings suggest that long-term coastal salt marsh reclamation affects nitrification by modulating the activities of ammonia-oxidizing microorganisms and regulating their community structures and assembly *** results provide a better understanding of the effects of long-term land reclamation on soil nitrogen-cycling microbial communities.

关键词： ammonia oxidizer beta nearest taxon index coastal salt marshes community assembly deterministic process nitrification rate stochastic process

Strategies and prospects for melatonin to alleviate abiotic stress in horticultural plants

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2024年第3期10卷 601-614页

作者： Xiaoyun Wang Meng cao Hongxin Li Ying {1. Shuangxi Fan Na Zhang Yangdong Guo College of Horticulture China Agricultural UniversityBeijing100193China College of Plant Science and Technology Beijing University of AgricultureBeijing102206China Beijing Bei Nong Enterprise Management Co. Ltd.Beijing102206China Sanya Institute of china Agricultural {1. SanyaHainan572000China

Melatonin is a conserved pleiotropic molecule in animals and *** is involved in many development processes and stress responses;thus,exploring its function in plants,particularly in horticultural plants,has become a rapidly developing *** studies have revealed that phytomelatonin acts as a plant biostimulant and increase its tolerance to various abiotic stressors,including extreme temperature,drought,osmotic disturbance,heavy metals,and ultraviolet(UV).Melatonin appears to have roles in the scavenging of reactive oxygen species(ROS)and other free radicals,affecting the primary and secondary metabolism of plants,regulating the transcripts of stress-related enzymes and transcription factors,and crosstalk with other hormones under different environmental *** pleiotropy makes phytomelatonin an attractive regulator to improve resistance to abiotic stress in *** recent discovery of the potential phytomelatonin receptor CAND2/PMTR1.and the proposition of putative models related to the phytomelatonin signaling pathways makes phytomelatonin a new plant *** on relevant studies from our laboratory,this review summarizes the phytomelatonin biosynthetic and metabolic pathways in plants and the latest research progress on phytomelatonin in abiotic stress of horticultural *** study will provide a reference for elucidating the regulatory mechanism of phytomelatonin affecting the resistance to abiotic stress in plants.

关键词： Abiotic stress Biostimulant Horticultural plants Phytomelatonin

Prevotella and succinate treatments altered gut microbiota,increased laying performance,and suppressed hepatic lipid accumulation in laying hens

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2024年第2期15卷 844-861页

作者： Min liu Zeyue Kang Xikang {1. Hongchao Jiao Xiaojuan Wang Jingpeng Zhao Hai Lin College of Animal Science and Technology Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and PreventionKey Laboratory of Efficient Utilization of Non‑Grain Feed Resources(Co‑Construction by Ministry and Province)Ministry of Agriculture and Rural AffairsShandong Agricultural UniversityTai’an 271018China

Background This work aimed to investigate the potential benefits of administering Prevotella and its primary metabolite succinate on performance,hepatic lipid accumulation and gut microbiota in laying *** One hundred and fifty 58-week-old Hyline Brown laying hens,with laying rate below 80%and plasma triglyceride(TG)exceeding 5 mmol/L,were used in this *** hens were randomly allocated into 5 groups and subjected to one of the following treatments:fed with a basal diet(negative control,NC),oral gavage of 3 mL/hen saline every other day(positive control,PC),gavage of 3 mL/hen Prevotella melaninogenica(1.^(7)CFU/mL,PM)or 3 mL/hen Prevotella copri(1.^(7)CFU/mL,***)every other day,and basal diet supplemented with 0.25%sodium succinate(Succinate).The results showed that PM and *** treatments significantly improved laying rate compared to the PC(P0.05).PM treatment increased(P1.and APB-5B at week 4,and ACC and CPT-1.at week *** results indicated enhanced antioxidant activities at week 8,as evidenced by reduced hepatic malondialdehyde(MDA)level and improved antioxidant enzymes activities in PM and Succinate groups(P<0.05).Supplementing with Prevotella or succinate can alter the cecal ***,the abundance of Prevotella in the Succinate group was significantly higher than that in the other 4 groups at the family and genus levels(P<0.05).Conclusions Oral intake of Prevotella and dietary supplementation of succinate can ameliorate lipid metabolism of laying *** beneficial effect of Prevotella is consistent across different *** finding highlights that succinate,the primary metaboli

关键词： Fatty liver Gut microbiota Laying hen Prevotella Succinate

Changes in Sediment Sources in the Southern Muddy Area of Weihai,china,Since the Late Pleistocene:A Record from Rare Earth Elements

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean university of{1. 2024年第5期23卷 1221-1232页

作者： ZHANG Zhichao liu Jinqing YIN Ping {1. Ke FENG Xiaokun WANG Shengyu College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Marine Geology School of Ocean and Earth ScienceTongji UniversityShanghai 200092China Qingdao Institute of Marine Geology China Geological SurveyQingdao 266237China

The small muddy areas developed in the southern Shandong Peninsula have attracted increasing attention from researchers because of complex changes in sediment sources driven by sea-level fluctuations and land-sea interactions since the late *** study investigates the evolution of sediment sources and their responses to environmental changes since the late Pleistocene,using core WHZK01.collected from the nearshore muddy area in southern Weihai for rare earth element(REE)*** doing so,this work highlights the changing patterns of material sources and the primary control *** results reveal that the sedimentary deposits in core WHZK01.exhibit distinct terrestrial *** function analysis(F_(D))and source discrimination dia-grams both suggest that the primary sources of these deposits are the Yellow River and adjacent small and medium-sized rivers,although the sources vary among different sedimentary ***,the DU3 layer(1..82-25.1. m)displays typical riverine sedimentation,dominated by terrestrial detrital input,primarily from the local rivers,namely the Huanglei and Muzhu *** material in the DU2 layer(1..91.1..82 m)is mainly influenced by a mixture of the Qinglong and Yellow *** DU1.layer(0-1..91.m)is influenced by sea-level changes during the Holocene,with the Yellow River being the primary source,although there is also some input from local *** changes in sea level during the Holocene and the input of Yellow River material carried by the coastal currents of the Yellow Sea are identified as the main controlling factors for the changes in material sources in the study area since the late Pleistocene,with small and mediumsized rivers also exerting some influence on the material *** above mentioned findings not only contribute to a better understanding of the source-sink systems of the Yellow River and adjacent small and mediumsized rivers but also deepen our understanding of the la

关键词： rare earth element source identification environmental evolution muddy area southern Weihai

Unlocking iron-based mixed-phosphate cathode for sodium-ion batteries through off-stoichiometry

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第9期17卷 8119-8125页

作者： Zhaolu liu Yongjie {1. Ning Wang Hui Yang Hao Zhang Xinyue Xu Nan Wang Jie Xu Yao liu Junxi Zhang Yongyao Xia Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric PowerShanghai 200090China Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200433China School of Materials Science and Engineering Anhui University of TechnologyMa’anshan 243002China Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China

The off-stoichiometric iron-based phosphate(Na_(3.1.)Fe_(2.44)(P_(2)O_(7))_(2),denoted as Na3.1.)as a low cost and high structure stability cathode material has been widely studied for sodium-ion batteries(SIBs).However,the lower theoretical specific capacity(1.7 mAh·g^(-1.)has seriously limited its practical *** this work,we incorporate varying proportion of sodium-iron phosphate(NaFePO_(4))into the Na3.1. to form a series of new high specific capacity mixed-phosphates Na_(3.1.+x)Fe_(2.44+x)(P_(2)O_(7))_(2)(PO_(4))x cathode materials for *** optimizing the introduction amount of NaFePO_(4)into Na_(3.1.),the practical reversible of Na_(3.1.+x)Fe_(2.44+x)(P_(2)O_(7))_(2)(PO_(4))_(x) increased from 92 to 1.5.2 mAh·g^(-1..The nano-size Na5.1.Fe4.44(P_(2)O_(7))_(2)(PO_(4))_(2) cathode material shows a reversible specific capacity of 1.5.2 mAh·g^(-1.at 0.1.C in *** at 60 C,it still exhibits a reversible specific capacity of 93.3 mAh·g^(-1.and keeps a capacity retention ratio of 87%after 3000 cycles at 20 ***,we present a novel approach to design a series of off-stoichiometric mixed-phosphates cathode materials for SIBs.

关键词： sodium-ion batteries cathode material iron-based mixed-phosphates off-stoichiometric

Etching-free pixel definition in InGaN green micro-LEDs

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第8期13卷 1655-1665页

作者： Zhiyuan liu Yi Lu Haicheng {1. Glen Isaac Maciel Garcia Tingang liu Xiao Tang Na Xiao Raul Aguileta Vazquez Mingtao Nong Xiaohang Li Advanced Semiconductor Laboratory Electrical and Computer Engineering ProgramCEMSE DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia

The traditional plasma etching process for defining micro-LED pixels could lead to significant sidewall *** near sidewall regions act as non-radiative recombination centers and paths for current leakage,significantly deteriorating device *** this study,we demonstrated a novel selective thermal oxidation(STO)method that allowed pixel definition without undergoing plasma damage and subsequent dielectric *** annealing in ambient air oxidized and reshaped the LED structure,such as p-layers and InGaN/GaN multiple quantum ***,the pixel areas beneath the pre-deposited SiO_(2)layer were selectively and effectively *** was demonstrated that prolonged thermal annealing time enhanced the insulating properties of the oxide,significantly reducing LED leakage ***,applying a thicker SiO_(2)protective layer minimized device resistance and boosted device efficiency *** the STO method,InGaN green micro-LED arrays with 50-,30-,and 1.-μm pixel sizes were manufactured and *** results indicated that after 4 h of air annealing and with a 3.5-μm SiO_(2)protective layer,the 1.-μm pixel array exhibited leakage currents density 1.2×1.^(-6)A/cm^(2)at-1. V voltage and a peak on-wafer external quantum efficiency of~6.48%.This work suggests that the STO method could become an effective approach for future micro-LED manufacturing to mitigate adverse LED efficiency size effects due to the plasma etching and improve device ***-LEDs fabricated through the STO method can be applied to micro-displays,visible light communication,and optical interconnect-based *** planar pixel geometry will provide more possibilities for the monolithic integration of driving circuits with ***,the STO method is not limited to micro-LED fabrication and can be extended to design other III-nitride devices,such as photodetectors,laser diodes,high-electron-mobility transistors

关键词： annealing protective quantum

Precise orbit determination for Tianwen-1.during mapping phase

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Astrodynamics 2024年第3期8卷 471-481页

作者： Shanhong liu Jing Kong Jianfeng {1. Hao Huang Haijun Man Jianguo Yan Xie Li National Key Laboratory of Science and Technology on Aerospace Flight Dynamics Beijing100094China Beijing Aerospace Control Center Beijing100094China Institute for Frontiers in Astronomy and Astrophysics Bejing Normal UniversityBeijing100875China Astronomy Department Bejing Normal UniversityBeijing100875China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan430079China

The mapping phase is a key stage of the Tianwen-1.orbiter. It has the longest exploration time and gathers abundant radio tracking data via the Chinese deep space network. Thus, it also provides opportunities for radio science research topics such as the Mars gravity field model, ephemeris, and radio occultation experiments. At this stage, the need for imaging takes the highest priority, leading to frequent attitude adjustments for the spacecraft, which presents challenges for Precise Orbit Determination (POD). To improve the accuracy of the spacecraft’s orbit, this study analyzes the effects of arc length, the empirical acceleration, and the solar radiation pressure parameters on POD, considering the limited number of radio tracking observations. For one-day arcs, the POD is not able to adequately account for wheel off-loading and a few unknown forces with limited observations, but reasonable fitting is performed for the wheel off-loading occurring during tracking periods or the gap between two tracking periods. When extending the POD arc to three days, the estimated empirical acceleration can be well-fitted and reflects the aggregation feature, but the solar radiation pressure parameter has little impact on POD results. The root mean square of two-way range-rate residuals after POD is about 0.1.-0.35 mm/s;the orbital position accuracy of 60% of the arcs is better than 1.0 m.

关键词： empirical acceleration mapping phase precise orbit determination(POD) radio science

The RNA m^(6)A demethylase ALKBH5 drives emergency granulopoiesis and neutrophil mobilization by upregulating G-CSFR expression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2024年第1期21卷 6-18页

作者： Yang liu Renjie Song Zhike Lu Lu Zhao Xinyi Zhan Yini Li Xuetao {1. Department of Immunology Center for ImmunotherapyInstitute of Basic Medical SciencesPeking Union Medical CollegeChinese Academy of Medical SciencesBeijingChina Suzhou Institute of Systems Medicine Chinese Academy of Medical SciencesSuzhouChina Frontier Research Center for Cell Response Institute of ImmunologyCollege of Life SciencesNankai UniversityTianjinChina School of Life Sciences Westlake UniversityHangzhouChina

Emergency granulopoiesis and neutrophil mobilization that can be triggered by granulocyte colony-stimulating factor(G-CSF)through its receptor G-CSFR are essential for antibacterial innate ***,the epigenetic modifiers crucial for intrinsically regulating G-CSFR expression and the antibacterial response of neutrophils remain largely unclear.N6-methyladenosine(m^(6)A)RNA modification and the related demethylase alkB homolog 5(ALKBH5)are key epigenetic regulators of immunity and inflammation,but their roles in neutrophil production and mobilization are still *** used cecal ligation and puncture(CLP)-induced polymicrobial sepsis to model systemic bacterial infection,and we report that ALKBH5 is required for emergency granulopoiesis and neutrophil ***5 depletion significantly impaired the production of immature neutrophils in the bone marrow of septic *** addition,Alkbh5-deficient septic mice exhibited higher retention of mature neutrophils in the bone marrow and defective neutrophil release into the circulation,which led to fewer neutrophils at the infection site than in their wild-type *** bacterial infection,ALKBH5 imprinted production-and mobilization-promoting transcriptome signatures in both mouse and human ***,ALKBH5 erased m^(6)A methylation on the CSF3R mRNA to increase the mRNA stability and protein expression of G-CSFR,consequently upregulating cell surface G-CSFR expression and downstream STAT3 signaling in *** RIP-qPCR results confirmed the direct binding of ALKBH5 to the CSF3R mRNA,and the binding strength declined upon bacterial infection,accounting for the decrease in G-CSFR expression on bacteria-infected *** these results collectively,we define a new role of ALKBH5 in intrinsically driving neutrophil production and mobilization through m^(6)A demethylation-dependent posttranscriptional regulation,indicating that m^(6)A RNA modification in neutrop

关键词： Emergency granulopoiesis Neutrophil mobilization ALKBH5 m^(6)A RNA modification G-CSF receptor