检索结果-南通市图书馆

Going deep:Roots,carbon,and analyzing subsoil carbon dynamics

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2024年第1期17卷 1-3页

作者： Ezhilmathi Angela Joseph Fernando Michael Selvaraj Yusaku Uga Wolfgang Busch hunt Bowers Joe Tohme Alliance of Bioversity International and CIAT Km 17 Recta Cali-PalmiraAprtado Aereo 6713Cali 763537Colombia National Institute of Agrobiological Sciences(NIAS) TsukubaIbaraki 305-0856Japan Salk Institute for Biological Studies 10010 N Torrey Pines RoadLa JollaCA 92037USA Earth Optics Suite 840ArlingtonVA 22202USA

Agricultural practices currently contribute to the emission of approximately 10%–12%atmospheric greenhouse gasses,with tillage agriculture accelerating soil disruption and carbon dioxide ***,various options exist,such as converting new lands for agriculture,promoting healthier plant-based diets,adopting advanced management technologies,and minimizing food ***,these measures alone are insufficient to ensure environmental sustainability within planetary boundaries.

关键词： soil measures carbon

Does the use of double hormone replacement therapy for trauma patient organ donors improve organ recovery for transplant

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Transplantation 2024年第2期14卷 119-125页

作者： Eden M Gallegos Tanner Reed Paige Deville Blake Platt Claudia Leonardi Lillian Bellfi Jessica Dufrene Saad Chaudhary John hunt Lance Stuke Patrick Greiffenstein Jonathan Schoen Alan Marr Anil Paramesh Alison A Smith Department of Physiology Louisiana State University Health Sciences Center New OrleansNew OrleansLA 70124United States Department of Medicine Louisiana State University Health Sciences Center New OrleansNew OrleansLA 70112United States Department of Surgery Louisiana State University Health Sciences Center New OrleansNew OrleansLA 70112United States Department of Trauma Surgery Tacoma General HospitalTacoma 98405United States Department of Public Health Louisiana State University Health Sciences Center New OrleansNew OrleansLA 70112United States Department of Donation Services Louisiana Organ Procurement AgencyCovingtonLA 70433United States Department of Surgery Tulane Transplant InstituteTulane University School of MedicineNew OrleansLA 70112United States

BACKGROUND With an ongoing demand for transplantable organs,optimization of donor management protocols,specifically in trauma populations,is important for obta-ining a high yield of viable organs per *** management of brain-dead potential organ donors(BPODs)is controversial,leading to heterogeneous clinical management *** studies have shown that when levo-thyroxine was combined with other treatments,including steroids,vasopressin,and insulin,BPODs had better organ recovery and survival outcomes were increased for transplant *** To determine if levothyroxine use in combination with steroids in BPODs increased the number of organs donated in trauma *** A retrospective review of adult BPODs from a single level 1 trauma center over ten years was *** criteria included patients who were not solid organ donors,patients who were not declared brain dead(donation after circulatory death),and patients who did not receive steroids in their hospital *** and steroid administration,the number of organs donated,the types of organs donated,and demographic information were *** analyses were performed with P0.05).In the ST/LT group,68.1%(n=47)donated a high yield(3-5)of organ types per donor compared to 42.1%(n=8)in the ST group(P=0.038).There was no difference in the total number of organ types donated between the groups(P=0.068).CONCLUSION This study suggests that combining levothyroxine and steroid administration increases high-yield organ donation per donor in BPODs in the trauma patient *** to this study include

关键词： Organ donation Trauma Brain death Levothyroxine Hormone replacement therapy Steroids Organ donor Retrospective

Combining two-photon lithography with laser ablation of sacrificial layers:A route to isolated 3D magnetic nanostructures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2023年第1期16卷 1441-1447页

作者： Arjen van den Berg Mylène Caruel Matthew hunt Sam Ladak School of Physics and Astronomy Cardiff UniversityCardiffCF243AAUK Institut National des Sciences Appliquées(INSA)of Toulouse 35 Avenue de Rangueil31400 ToulouseFrance

Three-dimensional(3D)nanostructured functional materials are important systems allowing new means for intricate control of electromagnetic properties.A key problem is realising a 3D printing methodology on the nanoscale that can yield a range of functional *** this article,it is shown that two-photon lithography,when combined with laser ablation of sacrificial layers,can be used to realise such a vision and produce 3D functional nanomaterials of complex ***-of-principle is first shown by fabricating planar magnetic nanowires raised above the substrate that exhibit controlled domain wall injection and ***,3D artificial spin-ice(3DASI)structures are fabricated,whose complex switching can be probed using optical *** show that by careful analysis of the magneto-optical Kerr effect signal and by comparison with micromagnetic simulations,depth dependent switching information can be obtained from the 3DASI *** work paves the way for new materials,which exploit additional physics provided by non-trivial 3D geometries.

关键词： three-dimensional(3D)nanomagnetism 3D lithography 3D artificial spin ice sacrificial layers magneto-optical Kerr effect

Room temperature synthesis of two-dimensional multi layer magnets based on α-Co^(Ⅱ) layered hydroxides

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Materials Science 2022年第1期4卷 36-43页

作者： Victor Oestreicher Christian Dolle Diego hunt Michael Fickert Gonzalo Abellan Instituto de Ciencia Molecular(ICMol).Universidad de Valencia Catedritico Jose Beltran 2PaternaValencia46980Spain Departamento de Física de la Materia Condensada GIy A.Instituto de Nanociencia y NanotecnologíaCNEA-CAC-CONICET.Av.Gral.PazSan MartinBuenas Aires1650Argentina Chair of Organic ChemistryⅡand Joint Institute of Advanced Materials and Processes(ZMP).Friedrich-Alexander-Universitát Erlangen-Nürnberg(FAU) Nikolaus-Fiebiger Strasse 1091058 Erlangen and Dr.-Mack Strasse 81Furth 90762Germany

Research on two-dimensional(2D) materials is one of the most active fields in materials science and nanotechnology. Among the members of the 2D family, layered hydroxides(LHs) represent an exceptional case of study due to their unparalleled chemical versatility which allows the modulation of their physicochemical properties at will. Nowadays, LHs based on earth-abundant metals are key materials in the areas of energy storage and conversion, hybrid materials or magnetism. α-Co hydroxides(Simonkolleite-like structures) are promising phases with tuneable electronic and magnetic properties by ligand modification. However, even in the simple case of α-Co^(Ⅱ) hydroxychlorides, the preparation of well-defined large 2D crystals is not straightforward, hindering the development of fundamental studies. Herein, we present the synthesis of 2D hexagonal crystals with outstanding sizethickness relationship(diameter > 5 μm and thickness of 20 ± 7 nm) by a simple homogeneous synthesis taking place at room temperature. In structural terms, no differences are observed between our layered materials and those obtained hydrothermally. However, dynamic susceptibility measurements alert about different arrangements of the magnetic sublattices, which have been rationalized with structural DFT calculations. This work provides an extremely easy bottom-up method to obtain high-quality 2D crystals based on α-CoIIhydroxides,paving the way for the development of fundamental studies and applications.

关键词： Two-dimensional(2D)materials Layered hydroxides Hexagonal morphology Bottom-up synthesis Magnetism

Chemogenetic and Optogenetic Manipulations of Microglia in Chronic Pain

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2023年第3期39卷 368-378页

作者： Sebastian Parusel Min-Hee Yi Christine L.hunt Long-Jun Wu Department of Neurology Mayo ClinicRochesterMN 55905USA Faculty of Psychology and Neuroscience Maastricht UniversityMaastricht MD6200The Netherlands Department of Pain Medicine Mayo ClinicJacksonvilleFL 32224USA Department of Neuroscience Mayo ClinicJacksonvilleFL 32224USA Department of Immunology Mayo ClinicRochesterMN 55905USA

Chronic pain relief remains an unmet medical *** research points to a substantial contribution of glia-neuron interaction in its ***,microglia play a crucial role in the development of chronic *** better understand the microglial contribution to chronic pain,specific regional and temporal manipulations of microglia are ***,two new approaches have emerged that meet these *** tools allow the expression of designer receptors exclusively activated by designer drugs(DREADDs)specifically in ***,optogenetic tools allow for microglial manipulation via the activation of artificially expressed,light-sensitive ***-and optogenetic manipulations of microglia in vivo are powerful in interrogating microglial function in chronic *** review summarizes these emerging tools in studying the role of microglia in chronic pain and highlights their potential applications in microglia-related neurological disorders.

关键词： Chronic pain Microglia Optogenetics Chemogenetics DREADDs ReaChR

Net ecosystem carbon exchange for Bermuda grass growing in mesocosms as affected by irrigation frequency

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 2022年第3期32卷 393-401页

作者： Yuan LI Gabriel *** Timothy J.CLOUGH John E.hunt David WHITEHEAD Department of Soil and Physical Sciences Lincoln UniversityLincoln 7647(New Zealand) Manaaki Whenua-Landcare Research P.O.Box 69040Lincoln 7640(New Zealand) State Key Laboratory of Grassland Agro-ecosystems College of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730020(China) Soil Biology Group Wageningen University and ResearchP.O.Box 47Wageningen 6700 AA(The Netherlands)

Intensification of grazed grasslands following conversion from dryland to irrigated farming has the potential to alter ecosystem carbon(C)cycling and affect components of carbon dioxide(CO_(2))exchange that could lead to either net accumulation or loss of soil *** there are many studies on the effect of water availability on biomass production and soil C stocks,much less is known about the effect of the frequency of water inputs on the components of CO_(2)*** grew Bermuda grass(Cynodon dactylon L.)in mesocosms under irrigation frequencies of every day(I_(1) treatment,30 d),every two days(I_(2) treatment,12 d),every three days(I_(3) treatment,30 d),and every six days(I_(6) treatment,18 d,after I_(2) treatment).Rates of CO_(2)exchange for estimating net ecosystem CO_(2)exchange(F_(N)),ecosystem respiration(R_(E)),and soil respiration(R_(S))were measured,and gross C uptake by plants(F_(G))and respiration from leaves(R_(L))were calculated during two periods,1–12 and 13–30 d,of the 30-d *** the first 12 d,there were no significant differences in cumulative F_(N)(mean±standard deviation,61±30 g C m^(-2),n=4).During the subsequent 18 d,cumulative F_(N) decreased with decreasing irrigation frequency and increasing cumulative soil water deficit(W),with values of 70±22,60±16,and 18±12 g C m^(-2) for the I_(1),I_(3),and I_(6) treatments,*** were similar decreases in F_(G),R_(E),and R_(L) with increasing W,but differences in R_(S) were not *** of the C_(4) grass growing in a C_(3)-derived soil enabled partitioning of R_(S) into its autotrophic(R_(A))and heterotrophic(R_(H))components using a^(13)C natural abundance isotopic technique at the end of the experiment when differences in cumulative W between the treatments were the *** values of R_(H) and its percentage contributions to R_(S)(43%±8%,42%±8%,and 8%±5%for the I_(1),I_(3),and I_(6) treatments,respectively)suggested that R_(H) remained unaffected across a wide

关键词： ^(13)C natural abundance CO_(2)exchange N_(2)O emission soil heterotrophic respiration water deficit

CPSF30-L: A direct connection between mRNA polyadenylation and m^(6)A RNA modification in plants

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2021年第5期14卷 711-713页

作者： Arthur G.hunt Department of Plant and Soil Sciences University of KentuckyLexingtonKY 40546-0312USA

Alternative polyadenylation-the series of events that leads to the production of different mRNA isoforms from a primary transcript via usage of different polyadenylation sites within the transcript-is an important facet of gene expression in *** the proteins that control alternative polyadenylation in plants is CPSF30,a core subunit of the polyadenylation complex(Chakrabarti and hunt,2015).In plants,CPSF30 integrates cellular signaling with numerous growth and developmental processes through an interaction with calmodulin(Chakrabarti and Flunt,2015).

关键词： CPSF integrate modification

Rumor recognition behavior of social media users in emergencies

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 Management Science and Engineering 2022年第1期7卷 36-47页

作者： Xuejun Ding Xiaxia Zhang Ruoshi Fan Qiaochu Xu Kyle hunt Jun Zhuang School of Management Science and Engineering Dongbei University of Finance and EconomicsDalian116025China School of Business Administration Northeastern UniversityShenyang110169China Department of Industrial and Systems Engineering University at BuffaloBuffaloNY14260USA

Social media rumors not only affect the health of online social networks,but also reduce the quality of information accessed by its *** the case of emergencies,the rapid spread of rumors often triggers mass anxiety and *** study integrates the planned behavior(TPB)and deterrence(TD)theories to study the factors affecting the rumor recognition behavior of social media *** structural equation model(SEM)method is used to test the proposed ***,the interaction between various factors is analyzed to evaluate their impact on the rumor recognition behavior exhibited by social media users in *** results demonstrate that certainty and severity have significant positive effects on subjective *** addition,subjective norms,attitude,and perceived behavioral control all affect the rumor recognition behavior of social media users,and involvement negatively moderates the relationship between the subjective norms and ***,insights into the formulation of rumor control strategies during emergencies are presented based on the empirical analysis.

关键词： Social media Emergency Online rumors Recognition behavior Influence factor

基于整体规划框架的区域综合货运规划建模方法研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

交通运输系统工程与信息 2022年第4期22卷 30-42页

作者：邓桂花钟鸣 RAZA Asif hunt John-douglas 周勇武汉理工大学智能交通系统(ITS)研究中心武汉430063 武汉理工大学国家水运安全工程技术研究中心武汉430063 武汉理工大学水路公路交通安全控制与装备教育部工程技术研究中心武汉430063 卡尔加里大学土木工程系卡尔加里T2N 1N4加拿大上海海事大学交通运输学院上海201306

区域一体化快速发展背景下,如何系统谋划区域综合交通运输规划,使经济、土地/空间及交通与环境协调发展,是实现区域可持续发展亟需深入研究的课题。因此,本文统筹考虑经济、土地/空间及交通和环境要素的动态交互关系,提出大区域综合货... 详细信息

区域一体化快速发展背景下,如何系统谋划区域综合交通运输规划,使经济、土地/空间及交通与环境协调发展,是实现区域可持续发展亟需深入研究的课题。因此,本文统筹考虑经济、土地/空间及交通和环境要素的动态交互关系,提出大区域综合货运整体规划模型的设计与开发方法。利用PECAS(Production,Exchange and Consumption Allocation System)理论框架分析生产者、消费者、交换商品、土地(空间)和运输方式之间的交互关系,并通过PECAS的集计经济流表设计模型结构,构建相应的宏观经济预测、社会经济活动空间分配、空间开发以及交通运输需求预测这4个模块,模拟区域社会经济活动增长及其空间分布与土地/空间开发及综合交通需求时变等特征之间的互动耦合关系。在社会经济发展目标、土地空间和环境等约束条件下,通过构建空间经济模型和综合交通一体化网络分配模型,实现面向多货品和多方式的综合货运整体规划建模方法,以辅助区域产业布局、土地利用与综合交通系统的整体规划。本文以长江经济带为研究案例,基于相关数据构建相应的大区域综合货运整体规划模型,分析评估2012—2035年模型预测结果。结果显示,预测得到的综合交通年平均日货运量拟合优度超过85%,分担率误差低于1%,验证了本文建模方法的有效性。

关键词：综合运输综合货运规划模型土地利用-交通整体规划建模多货品货物运输超级网络区域整体规划