检索结果-南通市图书馆

Floristic composition and edaphic relationships in ferruginous campo rupestre reference ecosystems

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 Mountain science 2024年第3期21卷 719-733页

作者： G.Wilson FERNANDEs Letícia RAMOs Dario C.PAIVA Jéssica CUNHA-BLUM Vanessa Matos GOMEs Daniel NEGREIROs Ecologia Evolutiva&Biodiversidade Departamento de GenéticaEcologia e Evolução/ICBUniversidade Federal de Minas Gerais31270-901Belo HorizonteMGBrazil Knowledge Center for Biodiversity 31270-901Belo HorizonteMGBrazil Department of Biological sciences Institute of EnvironmentFlorida International UniversityMiamiFL 33199USA Programa de Pós Graduação em Biodiversidade e Uso dos Recursos Naturais Universidade Estadual de Montes ClarosMontes ClarosMGBrazil Laboratório de Estudo das Relações solo-Planta Departamento de SolosUniversidade Federal Rural do Rio de JaneiroSeropédicaRGBrazil

Land use change and occupation have led to modifications in the environment causing loss of biodiversity and ecosystem services throughout the *** environments with high economic relevance,such as the ferruginous campo rupestre(rupestrian grassland known as Canga in Brazil),are even more susceptible to severe impacts due to their extreme habitat conditions and low *** determination of reference ecosystems based on the intrinsic characteristics of the ecosystem is essential for conservation as well as to the implementation of ecological *** proposed the reference ecosystem of the three main types of habitats of the ferruginous campo rupestre based on their floristic *** described the floristic composition of each habitat and evaluated the physicochemical properties of the soils and the relationship between plants and *** three habitats showed high diversity of plant species and many endemic species,such as Chamaecrista choriophylla,Cuphea pseudovaccinium,Lychnophora pinaster,and Vellozia *** distribution of vegetation was strongly related with the edaphic characteristics,with a set of species more adapted to high concentration of base saturation,fine sand,organic carbon,and iron,while another set of species succeeded in more acidic soils with higher s and silt *** provide support for the contention that the ferruginous campo rupestre is a mosaic of different habitats shaped by intrinsic local *** to recognize the floristic composition of each particular habitat can lead to inappropriate restoration,increased habitat homogenization and increased loss of biodiversity and ecosystem *** study also advances the knowledge base for building the reference ecosystem for the different types of ferruginous campo rupestre habitats,as well as a key database for highlighting those species contribute most to community assembly in this diverse and threatened tropical mountain ecosystem.

关键词： Canga Ecological restoration Extreme ecosystem Non-forest ecosystems Rupestrian grassland Taxon environment relationships

Axonal Conduction Velocity: A Computer study

在线全文

学校读者我要写书评

暂无评论

Journal of Applied Mathematics and Physics 2024年第1期12卷 60-71页

作者： Arthur D. snider Aman Chawla salvatore D. Morgera Department of Electrical Engineering University of South Florida Tampa USA Department of Computer science and Engineering Indian Institute of Technology New Delhi India

This paper derives rigorous statements concerning the propagation velocity of action potentials in axons. The authors use the Green’s function approach to approximate the action potential and find a relation between ... 详细信息

关键词： Neuron Axon Action Potential Conduction Velocity Internode

Hordedane diterpenoid phytoalexins restrict Fusarium graminearum infection but enhance Bipolaris sorokiniana colonization of barley roots

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2024年第8期17卷 1307-1327页

作者： Yaming Liu Dario Esposto Lisa K.Mahdi Andrea Porzel Pauline stark Hidayat Hussain Anja scherr-Henning simon Isfort Ulschan.Bathe Ivan F.Acosta Alga Zuccaro Gerd U.Balcke Alain Tissier Department of Cell and Metabolic Biology Leibniz Institute of Plant BiochemistryHalleGermany Institute for Plant sciences Cluster of Excellence on Plant Sciences(CEPLAS)Cologne BiocenterUniversity of CologneCologneGermany Department of Bioorganic Chemistry Leibniz Institute of Plant BiochemistryHalleGermany Max Planck Institute for Plant Breeding Research CologneGermany Horticultural sciences University of FloridaGainesvilleFLUSA.

Plant immunity is a multilayered process that includes recognition of patterns or effectors from pathogens to elicit defense *** include the induction of a cocktail of defense metabolites that typically restrict pathogen ***,we investigate the interaction between barley roots and the fungal pathogens Bipolaris sorokiniana(Bs)and Fusarium graminearum(Fg)at the metabolite *** identify hordedanes,a previously undescribed set of labdane-related diterpenoids with antimicrobial properties,as critical players in these *** of barley roots by Bs and Fg elicits hordedane synthesis from a 60o-kb gene *** reconstruction of the biosynthesis pathway in yeast and Nicotiana benthamiana produced several hordedanes,including one of the most functionally decorated products 19-β-hydroxy-hordetrienoic acid(19-OH-HTA).Barley mutants in the diterpene synthase genes of this cluster are unable to produce hordedanes but,unexpectedly,show reduced Bs *** contrast,colonization by Fusarium graminearum,another fungal pathogen of barley and wheat,is 4-fold higher in the mutants completely lacking ***,19-OH-HTA enhances both germination and growth of Bs,whereas it inhibits other pathogenic fungi,including *** of microscopy and transcriptomics data suggest that hordedanes delay the necrotrophic phase of *** together,these results show that adapted pathogens such as Bs can subvert plant metabolic defenses to facilitate root colonization.

关键词： barley Hordeum vulgare diterpenoid phytoalexins gene cluster pathogenic fungi Bipolaris sorokininiana Fusarium graminearum

A single degenerated primer significantly improves COX1 barcoding performance in soil nematode community profiling

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

soil Ecology Letters 2024年第2期6卷 31-44页

作者： Yincai Ren Dorota L. Porazinska Quanhui Ma shuhan Liu Hongmei Li Xue Qing Department of Plant Pathology Nanjing Agricultural UniversityNanjing210095China Department of Entomology and Nematology University of FloridaGainesvilleFL32611USA Institute of Grassland science Key Laboratory of Vegetation Ecology of the Ministry of EducationJilin Songnen Grassland Ecosystem National Observation and Research StationNortheast Normal UniversityChangchun130024China

A new COX1 primer for soil nematode metabarcoding was designed,and this primer outperforms other commonly used COX1 primer pairs in species recovery and quantity of PCR products.•The lack of reference database is the main reason that led to the low species recovery in COX1 metabarcoding.•We expanded current NCBI database by adding 51 newly generated COX1 reference *** nematodes play important roles in soil ecosystems and often serve as bioindicators of soil *** identification of soil nematodes is often difficult due to their limited diagnostic characters and high phenotypic *** barcoding and metabarcoding techniques are promising but lack universal primers,especially for mitochondrial COX1 *** this study a degenerated COX1 forward primer COIFGED was *** primer pair(COIFGED/JB5GED)outperforms other four commonly used COX1 primer pairs in species recovery and quantity of polymerase chain reaction(PCR)*** metabarcoding analysis,the reads obtained from the new primer pair had the highest sequencing saturation threshold and amplicon sequence variant(AsV)diversity in comparison to other COX1 as well as 18s rRNA *** annotation of AsVs suggested the new primer pair initially recovered 9 and 6 out of 25 genera from mock communities,respectively,outperformed other COX1 primers,but underperformed the widely used 18s NF1/18sr2b primers(16 out of 25 genera).By supplementing the COX1 database with our reference sequences,we recovered an additional 6 mock community species bringing the tally closer to that obtained with 18s *** summary,our newly designed COX1 primers significantly improved species recovery and thus can be supplementary or alternative to the conventional 18s metabarcoding.

关键词： degenerated primers DNA metabarcoding mitochondrial cytochrome oxidase c subunit I gene phylogeny ribosomal RNA gene soil nematodes

special Column on Recent Advances in PCMs as Thermal Energy storage in Energy systems

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 Thermal science 2024年第2期33卷 395-395页

作者： Mohammad Hossein AHMADI Tingzhen MING Marc A.ROsEN s.A.sHERIF Mohammad Mehdi RAsHIDI shahrood university of Technology Iran Wuhan university of Technology China university of Ontario Institute of Technology Canada university of florida USA university of Electronic science and Technology of China China

Thermal energy storage technology has the advantages of high energy storage density,small size,and high energy conversion *** is one of the key energy storage technologies and an important way to achieve carbon peaking and carbon neutrality *** change materials (PCMs) offer this opportunity to store high amount of energy and release it in the form of latent heat when needed,and therefore have the advantage of being capable to alleviate the intrinsic intermittency of renewable power production,especially in wind and solar farms.

关键词： efficiency store latent

A review:Advances in microbial remediation of trichloroethylene (TCE)

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental sciences 2010年第1期22卷 116-126页

作者： Prabhakar Pant sudhakar Pant Applied Research Center Florida International University Department of Biology St. Xavier's College

Research works in the recent past have revealed three major biodegradation processes leading to the degradation of trichloroethylene. Reductive dechlorination is an anaerobic process in which chlorinated ethenes are used as electron acceptors. On the other hand, cometabolism requires oxygen for enzymatic degradation of chlorinated ethenes, which however yields no benefit for the bacteria involved. The third process is direct oxidation under aerobic conditions whereby chlorinated ethenes are directly used as electron donors by microorganisms. This review presented the current research trend in understanding biodegradation mechanisms with regard to their field applications. All the techniques used are evaluated, with the focus being on various factors that influence the process and the outcome.

关键词： biodegradation trichloroethylene reductive dechlorination cometabolism direct oxidation

Oncologic outcomes with and without amniotic membranes in robotic-assisted radical prostatectomy:A propensity score matched analysis

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Urology 2024年第1期11卷 19-25页

作者： Jonathan Noël Daniel stirt Marcio Covas Moschovas sunil Reddy Abdel Rahman Jaber Marco sandri seetharam Bhat Travis Rogers subuhee Ahmed Anya Mascarenhas Ela Patel Vipul Patel Advent Health Global Robotics Institute CelebrationFLUSA university of Central florida College of Medicine OrlandoFLUSA Big and Open Data Innovation Laboratory University of BresciaItaly sUNY Upstate Medical university SyracuseNYUSA Kansas City university College of Medicine Kansas CityMOUSA Harvard university CambridgeMAUSA

Objective:Placement of human placenta derived grafts during robotic-assisted radical prostatectomy(RARP)hastens the return of continence and *** long-term impact on the oncologic outcomes remains to be *** objective was to determine the oncologic outcomes of patients with dehydrated human amnion chorion membrane(dHACM)at RARP compared to a matched ***:In a referral centre,from August 2013 to October 2019,599 patients used dHACM in bilateral nerve-sparing *** excluded patients with less than 12 months follow-up,simple prostatectomy,and unilateral *** with dHACM(amnio group)were 529,and were propensity score matched 1:1 to 2465 patients without dHACM(non-amnio group)and a minimum follow-up of 36 *** the time of RARP,dHACM was placed around the neurovascular bundle in the amnio *** and categorical variables in matched groups was tested by two-sample Kolmogorov-smirnov test and Fisher's exact test *** measured were biochemical recurrence(BCR),adjuvant and salvage therapy ***:Propensity score matching resulted in two groups of 444 *** incidence functions for BCR did not show a difference between the groups(p=0.3).Patients in the non-amnio group required salvage therapy more frequently than the amnio group,particularly after partial nerve-sparing RARP(6.3%vs.2.3%,p=0.001).Limitations are the absence of prospective ***:The data suggest that using dHACM does not have a negative impact on BCR in *** of cancer specific and overall survival will require follow-up study to increase our understanding of these grafts’impact on prostate cancer biology.

关键词： Prostatectomy Prostatecancer Robotic Oncology Outcome Allograft Biomaterial Dehydrated human amnionchorion membrane

O'Hare Airport roadway traffic prediction via data fusion and Gaussian process regression

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 Traffic and Transportation Engineering(English Edition) 2024年第4期11卷 721-732页

作者： Damola M.Akinlana Arindam Fadikar stefan M.Wild Natalia Zuniga-Garcia Joshua Auld Department of Mathematics and statistics University of South FloridaTampaFL 33620USA Decision and Infrastructure sciences Division Argonne National LaboratoryLemontIL 60439USA Applied Mathematics and Computational Research Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Industrial Engineering and Management sciences Northwestern UniversityEvanstonIL 60208USA Argonne National Laboratory Energy SystemsLemontIL 60439USA

This study proposes an approach of leveraging information gathered from multiple traffic data sources at different resolutions to obtain approximate inference on the traffic distribution of Chicago's O'Hare Airport ***,it proposes the ingestion of traffic datasets at different resolutions to build spatiotemporal models for predicting the distribution of traffic volume on the road *** to its good adaptability and flexibility for spatiotemporal data,the Gaussian process(GP)regression was employed to provide short-term forecasts using data collected by loop detectors(sensors)and supplemented by telematics *** GP regression is used to make predictions of the distribution of the proportion of sensor data traffic volume represented by the telematics data for each location of the ***,the fitted GP model can be used to determine the approximate traffic distribution for a testing location outside of the training *** in the transportation sector can find the results of this work helpful for making informed decisions relating to current and future transportation conditions in the area.

关键词： spatio-temporal Data fusion Gaussian process Multimodal data Airport traffic O'Hare Airport

Qos support in TDMA-Based Mobile Ad Hoc Networks

在线全文

学校读者我要写书评

暂无评论

Journal of Computer science & Technology 2005年第6期20卷 797-810页

作者： Imad Jawhar 吴杰 Department of Computer science and Engineering Florida Atlantic University Boca Raton FL 33431 U.S.A.

Mobile ad hoc networks （MANETs） are gaining a lot of attention in research lately due to their importance in enabling mobile wireless nodes to communicate without any existing wired or predetermined infrastructures. Furthermore, in order to support the growing need for multimedia and realtime applications, quality of service （Qos） support by the networking protocol is required. several important Qos parameters that are needed by such applications can be identified. They include bandwidth, end-to-end delay, delay jitter, and bit error rate. A good amount of research has been developed in this area covering different issues and challenges such as developing routing protocols that support bandwidth reservation and delay management. In this paper, the current state of research for Qos support in TDMA-based MANETs at different layers of the networking model is presented and categorized. In addition, the current issues and future challenges involved in this exciting area of research are also included.

关键词： mobile ad hoc networks (MANETs) quality of service (Qos) routing time division multiple access (TDMA)