检索结果-南通市图书馆

A predictive model f.r ethylene-mediated auxin and cytokinin patterning in the Arabidopsis root

Plant Communications 2024年第7期5卷 120-137页

作者： simon Moore George Jervis Jennif.r f.Topping Chunli Chen Junli Liu Keith Lindsey Department of.Biosciences Durham UniversitySouth RoadDurham DH13LEUK Hubei Hongshan Laboratory College of Life Science and TechnologyHuazhong Agricultural UniversityWuhan 430070China National Key Laboratory f.r Germplasm Innovation and Utilization f.r f.uit and Vegetable Horticultural Crops Huazhong Agricultural UniversityWuhanHubei 430070China

The interaction between auxin and cytokinin is important in many aspects of.plant *** measurements of.both auxin and cytokinin concentration and reporter gene expression clearly show the coexistence of.auxin and cytokinin concentration patterning in Arabidopsis root ***,in the context of.crosstalk among auxin,cytokinin,and ethylene,little is known about how auxin and cytokinin concentration patterns simultaneously emerge and how they regulate each other in the Arabidopsis *** work utilizes a wide range of.experimental observations to propose a mechanism f.r simultaneous patterning of.auxin and cytokinin *** addition to revealing the regulatory relationships between auxin and cytokinin,this mechanism shows that ethylene signaling is an important f.ctor in achieving simultaneous auxin and cytokinin patterning,while also predicting other experimental *** the mechanism with a realistic in silico root model reproduces experimental observations of.both auxin and cytokinin *** made by the mechanism can be compared with a variety of.experimental observations,including those obtained by our group and other independent experiments reported by other *** of.these predictions include patterning of.auxin biosynthesis rate,changes in PIN1 and PIN2 patterns in pin3,4,7 mutants,changes in cytokinin patterning in the pls mutant,PLS patterning,and various trends in dif.erent *** research reveals a plausible mechanism f.r simultaneous patterning of.auxin and cytokinin concentrations in Arabidopsis root development and suggests a key role f.r ethylene pattern integration.

关键词： Arabidopsis root auxin patterning cytokinin patterning ethylene signaling in silico digital root spatiotemporal modeling

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

In situ characterization of.particle f.rmation in spray f.ame synthesis using wide-angle light scattering

引用

Particuology 2024年第3期86卷 304-312页

作者： simon Aβmann f.anz J.T.Huber Stef.n Will Lehrstuhl f.r Technische Thermodynamik(LTT) Friedrich-Alexander-Universitat Erlangen-Nürnberg(FAU)Erlangen91058Germany Erlangen Graduate Schoolin Advanced Optical Technologies(SAOT) Friedrich-Alexander-Universitat Erlangen-Nurnberg(FAU)Erlangen91052Germany Competence Unit Engineering of.Advanced Materials(EAM) Friedrich-Alexander-Universitat Erlangen-Nürnberg(FAU)Erlangen91052Germany

Wide-angle light scattering(WALS)was used f.r in situ measurements of.droplet and nanoparticle size distributions during the synthesis of.titania and iron oxide particles f.om liquid precursor solutions in the standardized SpraySyn burner f.r spray f.ame *** was synthesized f.om titanium tetraisopropoxide(TTIP)and iron oxide f.om iron(II)nitrate nonahydrate(INN)using ethanol(EtOH)as *** images were taken at heights up to 120 mm above the burner surf.ce and classif.ed into droplet and particle *** size distributions were derived f.om a sequential analysis of.scattering data containing the oscillating Mie pattern,the lognormal size distribution parameters f.r spherical and f.actal particle f.actions f.om a multivariate approach on averaged particle scattering *** results show that the precursor addition leads to altered evaporation behavior and even droplet disruption probably induced by puf.ing or micro-explosions compared to pure *** the case of.TTIP(a hygroscopic alkoxide),the synthesis of.a large f.action of.spheres was observed,while the nitrate INN leads to the f.rmation of.mostly f.actal aggregates.

关键词： Spray f.ame synthesis Metal oxide particles Elastic light scattering Droplet size distribution Nanoparticle morphology Particle size distribution

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

f.nctional trait composition of.carabid beetle communities predicts prey suppression through both mass ratio and niche complementarity mechanisms

引用

Insect Science 2024年第2期31卷 562-574页

作者： Abdelhak Rouabah f.ancoise Lasserre-Joulin Sylvain Plantureux simon Taugourdeau Bernard Amiaud Universite de Loraine INRAELAENancyF-54000France UMR SELMET CIRADINRAEInstitut AgroUniversite de MontpellierMontpellier34000France CIRAD UMR SELMET-PPZSDakarSéenegal UMR Siva Universitéde LorraineAgroParisTechINRAEVandoeuvreLes Nancy54506France

Several components of.predator f.nctional diversity have been hypothesized to inf.uence prey suppression through either niche complementarity or mass ratio ***,most studies have used a f.nctional group approach when assessing the role of.these predators in ecosystem *** adopting a trait-based approach,we evaluated the relative contributions of.carabid diversity components in predicting prey *** results highlight the importance of.both taxonomic and f.nctional diversity components of.carabids as key drivers of.prey *** suppression was best predicted by carabid densities,with the dominance of.Poecilus cupreus potentially driving the positive ef.ect of.community total abundance through the mass ratio *** suppression increased with increasing the density of.large *** addition,carabid eye diameter and antennal length were key f.nctional traits f.r predicting prey ***,prey suppression increased with increasing carabid f.nctional richness f.llowing the niche complementarity *** contrast to f.nctional richness,f.nctional evenness and f.nctional divergence of.carabid communities were weakly correlated with prey *** identif.ing which diversity components of.carabid communities contribute the most to increase prey suppression,our results can guide ef.orts aiming to predict the relationship between diversity of.these predators and ecosystem f.nctioning.

关键词： abundance distribution biological control body size ecosystem f.nction f.nctional richness predator-prey interactions

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Hordedane diterpenoid phytoalexins restrict f.sarium graminearum inf.ction but enhance Bipolaris sorokiniana colonization of.barley roots

引用

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 Isf.rt Ulschan.Bathe Ivan f.Acosta Alga Zuccaro Gerd U.Balcke Alain Tissier Department of.Cell and Metabolic Biology Leibniz Institute of Plant BiochemistryHalleGermany Institute f.r 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 f.r Plant Breeding Research CologneGermany Horticultural Sciences University of FloridaGainesvilleFLUSA.

Plant immunity is a multilayered process that includes recognition of.patterns or ef.ectors f.om pathogens to elicit def.nse *** include the induction of.a cocktail of.def.nse metabolites that typically restrict pathogen ***,we investigate the interaction between barley roots and the f.ngal pathogens Bipolaris sorokiniana(Bs)and f.sarium graminearum(f.)at the metabolite *** identif. hordedanes,a previously undescribed set of.labdane-related diterpenoids with antimicrobial properties,as critical players in these *** of.barley roots by Bs and f. elicits hordedane synthesis f.om a 60o-kb gene *** reconstruction of.the biosynthesis pathway in yeast and Nicotiana benthamiana produced several hordedanes,including one of.the most f.nctionally 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 f.sarium graminearum,another f.ngal pathogen of.barley and wheat,is 4-f.ld higher in the mutants completely lacking ***,19-OH-HTA enhances both germination and growth of.Bs,whereas it inhibits other pathogenic f.ngi,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 def.nses to f.cilitate root colonization.

关键词： barley Hordeum vulgare diterpenoid phytoalexins gene cluster pathogenic f.ngi Bipolaris sorokininiana f.sarium graminearum

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enhanced diagnostic workup increases pathological f.ndings in patients with acute ischaemic stroke:results of.the prospective HEBRAS study

引用

Stroke & Vascular Neurology 2024年第2期9卷 145-152,I0414-I0425页

作者： simon Hellwig Thomas Krause Jan f.Scheitz Juliane Herm Ulrike Grittner Nadja Jauert Jochen B f.ebach Mario Kasner Wolf.am Doehner Matthias Endres Rolf.Wachter Thomas Elgeti Christian H Nolte Karl Georg Haeusler Department of.Neurology with Experimental Neurology Charité-Universitätsmedizin Berlincorporate member of Freie Universität Berlin and Humboldt-Universität zu BerlinBerlinGermany Center f.r Stroke Research Berlin BerlinGermany Berlin Institute of.Health at Charité–Universitätsmedizin Berlin BIH Biomedical Innovation AcademyBerlinGermany Department of.Neurology Jüdisches Krankenhaus BerlinBerlinGermany German Center f.r Cardiovascular Diseases(DZHK) Partner Site BerlinBerlinGermany Institute of.Biometry and Clinical Epidemiology Charité-Universitätsmedizin BerlinBerlinGermany BIH Center f.r Regenerative Therapies(BCRT) Berlin Institute of Health at Charité–Universitätsmedizin BerlinBerlinGermany Department of.Cardiology Charité-Universitätsmedizin BerlinBerlinGermany Department of.Cardiology Campus Benjamin FranklinCharité-Universitätsmedizin BerlinBerlinGermany German Center f.r Neurodegenerative Diseases(DZNE) Partner Site BerlinBerlinGermany Department of.Cardiology University Hospital LeipzigLeipzigGermany Department of.Radiology Charité-Universitätsmedizin BerlinBerlinGermany Department of.Neurology University Hospital WürzburgWürzburgGermany

Background Stroke aetiology remains cryptogenic in a relevant proportion of.patients with acute ischaemic stroke(AIS).We assessed whether enhanced diagnostic workup af.er AIS yields a higher rate of.prespecif.ed pathological f.ndings compared with routine diagnostic care *** Hospitalised patients with AIS were prospectively enrolled in the investigator-initiated observational HEart and BRain Interf.ces in Acute Ischaemic Stroke(HEBRAS)study at the Charité,Berlin,*** with AIS without known atrial f.brillation(Af.underwent cardiovascular MR imaging(CMR),MR-angiography of.the aortic arch and prolonged Holter-ECG monitoring on top of.routine diagnostic *** Among 356 patients with AIS(mean age 66 years,37.6%f.male),enhanced workup yielded a higher rate of.prespecif.ed pathological f.ndings compared with routine care(17.7%vs 5.3%;pf.wer patients were classif.ed as cryptogenic af.er enhanced diagnostic workup(38.5%vs 45.5%,pf.lly perf.rmed in 292(82.0%)patients and revealed more of.en a prespecif.ed pathological f.nding compared with routine echocardiography(16.1%vs 5.3%).f.rthermore,study-related ECG monitoring(median duration 162 hours(IQR 98–210))detected Af.in 16(4.5%)patients,while routine monitoring(median duration 51 hours(IQR 34–74))detected Af.in seven(2.0%)*** Enhanced diagnostic workup revealed a higher rate of.prespecif.ed pathological f.ndings in patients with AIS compared with routine diagnostic care and signif.cantly reduced the proportion of.patients with cryptogenic *** registration number NCT02142413.

关键词： routine patients prospective

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Enantioselective Synthesis,(Chir)optical Properties,and Postsynthetic f.nctionalization of.f.ran-Containing Oxa[5]-,Oxa[6]-,and Dioxa[6]helicenes

引用

CCS Chemistry 2024年第10期6卷 2439-2451页

作者： Wei f. Valentina Pelliccioli Raquel Casares-López Juan M.Cuerva Martin simon Christopher Golz Manuel Alcarazo Institut f.r Organische und Biomolekulare Chemie Georg-August-Universität Göttingen37077 Göttingen Departamento de Química Orgánica Universidad de GranadaUnidad de Excelencia Química Aplicada a Biomedicina y MedioambienteE-18071 Granada

An expedient synthesis of.a series of.conf.gurationally stable oxa[5]helicenes,oxa[6]helicenes,and dioxa[6]helicenes has been developed using an intramolecular,highly enantioselective,Au-catalyzed,alkyne hydroarylation *** absolute conf.guration of.the newly prepared structures has been established by crystallography,their inversion barriers have been determined theoretically and experimentally,and their chiroptical properties have been *** of.these data with those reported f.r thia-or carbohelicenes sharing an otherwise identical helical f.amework enables the establishment of.comprehensive correlations between the nature of.the embedded(hetero)atom(s)and the magnitude of.these *** studies on the postsynthetic f.nctionalization of.the oxahelicenes obtained are also ***,siteselective bromination at the 15-position in oxa[5]helicene 5d allows its subsequent manipulation into pyridine-containing aza-oxa[7]helicene 13d;while the two termini of.oxa[6]helicene 7d have been intramolecularly cyclised into the pleiadeno[1,12,11-bcde]benzof.ran derivative 15d by acidic *** transf.rmations take place without erosion of.the enantiopurity.

关键词： Au-catalysis enantioselective synthesis oxa[n]helicenes racemization dynamics postsynthetic f.nctionalization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

An evolutionary perspective on conf.ict and compensation in physiological and f.nctional traits

引用

Current Zoology 2014年第6期60卷 755-767页

作者： Jerry f. HUSAK simon R LAILVAUX Department of.Biology University of St. Thomas 2115 Summit Avenue St Paul MN 55105 USA Department of.Biological Sciences University of New Orleans 2000 Lakeshore Drive New Orleans LA 70148 USA

Physiological and f.nctional traits, especially those related to behavior and whole-organism perf.rmance capacities, are subject to a variety of.both parallel and opposing natural and sexual selection pressures. These selection pressures show considerable interspecif.c variation, shaping contemporary behavioral and f.nctional diversity, but the f.rm and intensity of.selection on physiological and f.nctional traits can also vary intraspecif.cally. The same suites of.traits can experience quite dif.erent se- lection pressures, depending on the sex or age of.a given individual, as well as the presence and nature of.alternative reproductive strategies and tactics. These inter- and intra-locus genetic conf.icts have potentially important consequences f.r the evolutionary trajectories of.traits subject to them. Consequently, any intraspecif.c conf.icts which could displace traits f.om their selective op- tima in certain classes of.individuals relative to others are expected to result in selection f.r mechanisms to compensate f.r devia- tion f.om those optima. Such conf.icts include interlocus sexual conf.ict, intralocus sexual conf.ict, and interacting phenotypes, as well as conf.ict within a sex. In this paper, we consider the evidence f.r, and implications of. such conf.icts f.r physiological and f.nctional traits in diverse taxa, including both vertebrates and invertebrates, and evaluate the various mechanisms, ranging f.om behavioral and mechanical to energetic and genetic, enabling compensation. We also discuss how pre- and post-mating conf.icts, as well as interacting phenotypes, might af.ect the evolution of.behavior and physiological and f.nctional traits. Investigators that seek to understand the links among behavior, morphology, physiology, and f.nction should consider such conf.icts.

关键词： Sexual Conf.ict Compensation Sexual Selection Whole-organism Perf.rmance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photoelectrochemical Iron-Catalyzed C(sp^(3))-H Borylation of.Alkanes in a Position-Selective Manner

引用

CCS Chemistry 2024年第6期6卷 1430-1438页

作者： Wen Wei Bin Wang simon L.Homölle Jinbin Zhu Yanjun Li Tristan von Münchow Isaac Maksso Lutz Ackermann Institut f.r Organische und Biomolekulare Chemie Georg-August-Universität Göttingen37077 Göttingen

Catalytic C-H borylation is of.prime topical importance,since easily available f.edstock chemicals can thereby be transf.rmed into valuable transient f.nctional groups in the absence of.directing ***,we disclose an iron-catalyzed C(sp^(3))-H borylation of.simple,non-pref.nctionalized alkanes,providing access to value-added products in a single step by means of.*** power of.merging photo-and electrochemistry was mirrored by ample scope and exceedingly mild reaction ***,an outstanding position-selectivity in f.vor of.primary C(sp^(3))-H proved viable within the photoelectrochemical borylation through a chemo-selective anodic overoxidation *** f.rro-photoelectrochemistry strategy avoids toxic precious transition metals,enabling C(sp^(3))-H borylations in a site-selective f.shion.

关键词： photoelectrocatalysis C(sp^(3))-H borylation iron catalysis position-selectivity chlorine radical

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Prevalence of.Precancerous Lesions Based on Digital Cervicography with VIA/VILI among Women Positive f.r High-Risk Human Papillomavirus Serotypes: A Screening Center-Based Study in Cameroon

引用

Open Journal of.Obstetrics and Gynecology 2024年第6期14卷 967-978页

作者： Jef.rey-Lewis Nzang Clif.rd Ebontane Ebong simon Manga f.orence Manjuh f.lix Essiben Isidore Tompeen Judith Seungue Serge Robert Nyada Jeanne Hortence f.uedjio Ymele f.uelif.ck Julius Sama Dohbit Kloukanmey Zonal Hospital Mdecins Sans Frontires Kloukanmey Benin f.culty of.Medicine and Biomedical Sciences University of Yaound 1 Yaound Cameroon Gynecology and Obstetrics Unit Central Hospital of Yaound Yaound Cameroon Womens Health Program Cameroon Baptist Convention Health Services Yaound Cameroon Department of.Obstetrics and Gynaecology Gyneco-Obstetric and Pediatric Hospital of Yaound Yaound Cameroon Expanded Program of.Immunization Ministry of Health Yaound Cameroon Department of.Obstetrics and Gynaecology Gynaecological Endoscopic Surgery and Human Reproductive Teaching Hospital Yaounde Cameroon Department of.Obstetrics and Gynaecology University of Dschang Dschang Cameroon Higher Institute of.Medical Technology Nkolondom Yaound Cameroon

Background: Since 2021, high-risk Human Papilloma Virus (HR-HPV) testing has been the recommended screening test f.r cervical cancer f.r all settings;either used alone in a “test and treat” strategy, or with a triage test, with or without biopsy, bef.re treatment. Cameroon has rolled out immunization against HPV 16 and 18, but studies show a higher prevalence of.non-16/18 HR-HPV types. Objectives: Determine the prevalence of.precancerous lesions, in women with HR-HPV inf.ction and evaluate association of.digital cervicography (DC) VIA/VILI positivity with HPV serotype, as a measure of.their contribution to precancer and cancer incidence. Methodology: The study was cross-sectional, descriptive, and analytic. It took place at the Etoug-Ebe and Ekoudoum Baptist Hospitals in Yaoundé, during the period April-September 2022. We reviewed the records of.women screened f.r cervical cancer between f.bruary 2020 and December 2021 and evaluated the prevalence of.lesions on digital cervicography (DC) with VIA/VILI f.r women positive f.r HR-HPV serotypes. The data were analyzed using SPSS version 20.0 f.r Windows. P values Results: We identif.ed 315 cases with a positive HR-HPV deoxyribonucleic acid (DNA) test, 224 (71.1%) had a DC VIA/VILI triage test done. Of.these, 30 (13.4%) women had a positive DC VIA/VILI, with f.ve women (2.2%) having lesions suggestive of.cancer. Out of.11 cases positive f.r HPV 16 alone, 05 (45.5%) had a positive DC VIA/VILI test. Of.the 14 cases positive f.r HPV 18 alone, 03 (21.4%) had a positive VIA/VILI, meanwhile only 19 (10.7%) of.the 177 cases positive f.r non-16/18 HPV had a positive VIA/VILI test. Conclusion: A high proportion of.women (13.4%) with HR HPV had a positive DC VIA/VILI, with a signif.cant proportion (2.2%) having lesions suggestive of.invasive cervical cancer HR-HPV serotype was associated with DC VIA/VILI positivity;HPV 16 had the strongest association (45.5%), f.llowed by HPV 18 (21.4%), and non-16/18 HR-HPV (10.7%), suggesting a

关键词： High-Risk Human Papillomavirus Precancerous Digital Cervicography VIA/VILI Serotype

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Adverse events related to physical restraint use in intensive care units: A review of.the literature

引用

Journal of.Intensive Medicine 2024年第3期4卷 318-325页

作者： Sebastian Berger Pascale Grzonka simon A.Amacher Sabina Hunziker Anja I.f.ei Raoul Sutter Clinic f.r Intensive Care Department of Acute MedicineUniversity Hospital BaselBaselSwitzerland Medical Communication and Psychosomatic Medicine University Hospital BaselBaselSwitzerland Medical f.culty University of BaselBaselSwitzerland Department of.Clinical Research University of BaselBaselSwitzerland

Physical restraints are widely used and accepted as protective measures during treatment in intensive care unit (ICU). This review of.the literature summarizes the adverse events and outcomes associated with physical restraint use, and the risk f.ctors associated with their use during treatment in the ICU. The PubMed, Scopus, and Google Scholar databases were screened using predef.ned search terms to identif. studies pertaining to adverse events and/or outcomes associated with physical restraint use, and the f.ctors associated with their use in adult patients admitted to the ICU. A total of.24 articles (including 6126 patients) that were published between 2006 and 2022 were identif.ed. The described adverse events associated with physical restraint use included skin injuries, subsequent delirium, neurof.nctional impairment, and a higher rate of.post-traumatic stress disorder. Subsequent delirium was the most f.equent adverse event to be reported. No alternative measures to physical restraints were discussed, and only one study reported a standardized protocol f.r their use. Although physical restraint use has been reported to be associated with adverse events (including neurof.nctional impairment) in the literature, the available evidence is limited. Although causality cannot be conf.rmed, a def.nite association appears to exist. Our f.ndings suggest that it is essential to improve awareness regarding their adverse impact and optimize approaches f.r their detection, management, and prevention using protocols or checklists.

关键词： Physical restraint Intensive care unit Delirium Complication Adverse event

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：