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短玻纤增强聚丙烯注射压力对微观结构和力学性能影响

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复合材料学报 2000年第4期17卷 6-10页

作者：钟明强濮阳楠益小苏 jacobs o 浙江工业大学化工学院杭州310014 Fachhochschule Leubeck

报道了短玻纤增强聚丙烯复合材料中玻纤及注射压力对材料微观结构和力学性能的影响规律。实验结果表明 :随着玻纤含量提高 ,复合材料的拉伸强度提高 ,而断裂伸长率、冲击强度和熔体流动速率则下降。注射压力提高 ,拉伸试样芯层中玻纤的... 详细信息

报道了短玻纤增强聚丙烯复合材料中玻纤及注射压力对材料微观结构和力学性能的影响规律。实验结果表明 :随着玻纤含量提高 ,复合材料的拉伸强度提高 ,而断裂伸长率、冲击强度和熔体流动速率则下降。注射压力提高 ,拉伸试样芯层中玻纤的平均取向角下降 ,取向度提高 ,因而拉伸强度增大 ,冲击强度下降。皮层结构中玻纤沿熔体流动方向高度取向。聚丙烯球晶尺寸随玻纤含量增加而变小 ,规整度也变差 ,至 40 %时 ,聚丙烯已难以形成规整的球晶结构。

关键词：短玻纤注射压力微观结构聚丙烯复合材料

原位聚合抗磨损PA6／纳米Sio2复合材料制备及其性能研究

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中国塑料 2009年第3期23卷 24-27页

作者：孟繁雪吴唯 o. jacobs M. Karczewski 华东理工大学材料科学与工程学院上海200237 Luebeck University of Applied Sciences Luebeck Germany23562

为提高聚酰胺6(PA6)的抗磨损性能,采用原位聚合法合成并制备了PA6/纳米Sio2复合材料,研究了该材料的抗磨损性能、耐热性能、力学性能和结晶性能。结果表明,原位聚合PA6/纳米Sio2复合材料具有良好的抗磨损特性,当纳米Sio2含量为1%(质量分... 详细信息

为提高聚酰胺6(PA6)的抗磨损性能,采用原位聚合法合成并制备了PA6/纳米Sio2复合材料,研究了该材料的抗磨损性能、耐热性能、力学性能和结晶性能。结果表明,原位聚合PA6/纳米Sio2复合材料具有良好的抗磨损特性,当纳米Sio2含量为1%(质量分数,下同)时,复合材料抗磨损性能最佳,该材料的热变形温度、拉伸强度、弹性模量和断裂伸长率均明显高于原料PA6;当纳米Sio2含量为3%时,复合材料热变形温度由原料PA6的64.6℃提高到130℃。采用原位聚合母料法制备的PA6/纳米Sio2复合材料同样具有理想的抗磨损性能,并可获得更好的力学性能,且可大幅降低材料制备成本。

关键词：抗磨损原位聚合聚酰胺6 纳米二氧化硅复合材料

Geochronological constraints on the metamorphic sole of the Semail ophiolite in the United Arab Emirates

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Geoscience Frontiers 2016年第4期7卷 609-619页

作者： Nick M.W.Roberts Robert J.Thomas Joachim jacobs NERC Isotope Geosciences Laboratory British Geological SurveyKeyworthNG12 5GGUK Council for Geoscience P.O.Box 572Bellville 7535South Africa University of Bergen.Department of Earth Science PB 78035020 BergenNorway Norwegian Polar Institute Fram Centre9296 TromsoNorway

The Semail ophiolite of oman and the United Arab Emirates （UAE） provides the best preserved large slice of oceanic lithosphere exposed on the continental crust, and offers unique opportunities to study processes of ocean crust formation, subduction initiation and obduction. Metamorphic rocks exposed in the eastern UAE have traditionally been interpreted as a metamorphic sole to the Semail ophiolite. However, there has been some debate over the possibility that the exposures contain components of older Arabian continental crust. To help answer this question, presented here are new zircon and futile U-Pb geochronological data from various units of the metamorphic rocks. Zircon was absent in most samples. Those that yielded zircon and futile provide dominant single age populations that are 95-93 Ma, partially overlapping with the known age of oceanic crust formation （96.5-94.5 Ma）, and partially overlapping with cooling ages of the metamorphic rocks （95 90 Ma）. The data are interpreted as dating high-grade metamorphism during subduction burial of the sediments into hot mantle lithosphere, and rapid cooling during their subsequent exhumation. A few discordant zircon ages, interpreted as late Neoproterozoic and younger, represent minor detrital input from the continent. No evidence is found in favour of the existence of older Arabian continental crust within the metamorphic rocks of the UAE.

关键词： Semail ophiolite United Arab Emirates Metamorphic sole U-Pb geochronology Zircon Rutile

Childhood Cardiovascular Risk Factors and Adult Cardiovascular Events

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四川生理科学杂志 2022年第2期44卷 53-53页

作者： David R jacobs Jr From the Division of Epidemiology and Community Health School of Public Health (D.R.J.) and the Department of Pediatrics University of Minnesota Medical School (A.R.S. J.S.) University of Minnesota Minneapolis the Division of Biostatistics and Epidemiology (J.G.W. N.Z.) and the Heart Institute (E.M.U.) Cincinnati Children’s Hospital Medical Center and the Department of Pediatrics University of Cincinnati College of Medicine (J.G.W. N.Z. E.M.U.) — both in Cincinnati the Department of Pediatrics University of Colorado School of Medicine and Anschutz Medical Campus Children’s Hospital Colorado — both in Aurora (S.R.D.) the Center for Population Health Research (J.I. N.K. C.G.M. O.T.R.) the Research Center of Applied and Preventive Cardiovascular Medicine (J.I. N.K. C.G.M. O.T.R.) and the Departments of Medicine (M.J. J.S.A.V.) and Mathematics and Statistics (N.K.) University of Turku and the Center for Population Health Research (J.I. N.K. C.G.M. O.T.R.) the Division of Medicine (M.J. J.S.A.V.) and the Department of Clinical Physiology and Nuclear Medicine (O.T.R.) Turku University Hospital Turku and the Department of Clinical Chemistry Fimlab Laboratories and the Finnish Cardiovascular Research Center and the Faculty of Medicine and Health Technology Tampere University Tampere (T.L.) — all in Finland Menzies Institute for Medical Research University of Tasmania Hobart TAS (C.G.M. A.J.V. T.D.) and the Heart Research Group Murdoch Children’s Research Institute Melbourne VIC (T.D.) — both in Australia the School of Public Health and Tropical Medicine Tulane University New Orleans (L.A.B.) the Department of Epidemiology College of Public Health University of Iowa Iowa City (T.L.B.) the Division of Public Health Sciences Wake Forest School of Medicine Winston-Salem NC (R.J.P.) and the Nuffield Department of Women’s and Reproductive Health University of Oxford Oxford United Kingdom (T.D.).

Background:Childhood cardiovascular risk factors predict subclinical adult cardiovascular disease,but links to clinical events are ***:In a prospective cohort study involving participants in the International Childhood Cardiovascular Cohorts(i3C)Consortium,we evaluated whether childhood risk factors(at the ages of 3 to 19 years)were associated with cardiovascular events in adulthood after a mean follow-up of 35 years.

关键词： Cardiovascular cardiovascular Childhood

Validation of a novel imaging approach using multi-slice CT and cone-beam CT to follow-up on condylar remodeling after bimaxillary surgery

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International Journal of oral Science 2017年第3期9卷 139-144页

作者： laura ferreira pinheiro nicolielo jeroen van dessel eman shaheen carolina letelier marina codari constantinus politis ivo lambrichts reinhilde jacobs omfs-impath research group department of imaging and pathologyfaculty of medicineuniversity of leuven and maxillofacial surgery departmentuniversity hospitals leuvenLeuvenBelgium department of oral and maxillofacial radiology university of los andessantiagochileSantiagoChile unit of radiology irccs policlinico san donato MilaneseMilanItaly department of morphology faculty of medicineuniversity of hasseltcampusDiepenbeekBelgium department of dental medicine karolinska institutetHuddingeSweden

The main goal of this study was to introduce a novel three-dimensional procedure to objectively quantify both inner and outer condylar remodelling on preoperative multi-slice computed tomography （MSCT） and postoperative cone-beam computed tomography （CBCT） images. Second, the reliability and accuracy of this condylar volume quantification method was assessed. The mandibles of 20 patients （11 female and 9 male） who underwent bimaxillary surgery were semi-automatically extracted from MSCT/CBCT scans and rendered in 3D. The resulting condyles were spatially matched by using an anatomical landmark-based registration procedure. A standardized sphere was created around each condyle, and the condylar bone volume within this selected region of interest was automatically calculated. To investigate the reproducibility of the method, inter- and intra-observer reliability was calculated for assessments made by two experienced radiologists twice five months apart in a set of ten randomly selected patients. To test the accuracy of the bone segmentation, the inner and outer bone structures of one dry mandible, scanned according to the clinical set-up, were compared with the gold standard, micro-CT. Thirty-eight condyles showed a significant （P〈o.05） mean bone volume decrease of 26.4%_ 11.4% （502.9 mm3＋ 268.1 mm3）. No significant effects of side, sex or age were found. Good to excellent （ICC〉 0.6） intra- and inter-observer reliability was observed for both MSCT and CBCT. Moreover, the bone segmentation accuracy was less than one voxel （0.4 mm） for MSCT （0.3 mm __. 0.2 mm） and CBCT （0.4 mm _ 0.3 mm）, thus indicating the clinical potential of this method for objective follow-up in pathological condylar resorption.

关键词： condylar resorption Cone-beam computed tomography mandibular condyle multi-slice computed tomography three-dimensional imaging

Comparison of Three Macroinvertebrate Sampling Methods for Use in Assessment of Water Quality Changes in Flashy Urban Streams

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Journal of Environmental Protection 2020年第8期11卷 585-609页

作者： Roger Yeardley Jr. Scott jacobs Ken Fritz William Thoeny office of Research and Development U.S. Environmental Protection Agency Cincinnati USA Pegasus Technical Services c/o U.S. Environmental Protection Agency Cincinnati USA

The unique challenges associated with sampling of macroinvertebrates in flashy urban streams create a methods gap. These streams form isolated pools for much of the year, interspersed with spates that scour and deposit excessive amounts of sediment. Commonly used stream grab sampling methods, such as nets and Hess and Surber fixed-area samplers, work well in wadable streams with perennial flow. Deployed samplers (Hester-Dendy, gravel tray) can be used in waters with or without flow. We evaluated three methods which don’t require stream flow: modified Hester-Dendy (MHD), gravel tray, and bucket (a type of cylinder grab sample method), for their potential use in bioassessment of a project involving daylighting of a 180-m culvert on Congress Run, a flashy urban tributary to Mill Creek in Cincinnati, ohio. Method efficacy was measured using three criteria: usability (level of effort and recoverability of samplers), variability, and community retrieval completeness. The bucket method required the lowest level of effort and had the highest sample recovery. The bucket sampler had the lowest variability for most metrics, including the critical metric of taxa richness, with a coefficient of variation (CV) of 20.9%. The MHD and tray samplers had taxa richness CVs of 42.9% and 53.9%, respectively. The bucket sampler also had the lowest CV (27.4%) for a multi-metric index. The bucket sampler performed best with respect to community retrieval completeness, with higher pooled and average taxa richness. The total number of taxa collected from all the replicate bucket grab samples (42) was greater than that collected by the HD and tray samplers combined (27). Multivariate analyses showed significant grouping with respect to methods and location. This study supports the bucket grab sampler method as a candidate for sampling of flashy urban streams.

关键词： Macroinvertebrate Methods Stream Urban Sampling Flow Hydrology

Genetical Genomics Dissection of Cotton Fiber Quality

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棉花学报 2008年第S1期20卷 30-页

作者： LACAPE J M jacobs J LLEWELLYN D CIRAD UMR-DAP TA70-03 Avenue Agropolis 34398 Montpellier Cedex 5 France Bayer BioScience Technologiepark 38 B9052 Gent Belgium CSIRo Plant Industry P.o.Box 1600 Canberra ACT 2601 Australia

Cotton fiber is a commodity of key economic importance in both developed and developing *** two cultivated species,Gossypium hirsutum and ***,are

关键词： QTL Genetical Genomics Dissection of Cotton Fiber Quality

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肝脏的癌前病变:分子病理学及其他

胃肠病学 1997年第4期2卷 254-255页

作者： Sudilovsky o Sun M Eshleman J Ferrel L jacobs G Tuthill R 马雄 Institute of Pathology Case Western Reserve University and University Hospitals of ClevelandCleveland OH 44106 Department of Pathology University of California Medical Center San Francisco Institute of Pathology Case Western Reserve University and University Hospitals of Cleveland Cleveland. OH 44106 Department of Pathology Cleveland Clinic Foundation Cleveland OH 44195 U.S.A

大多数肝细胞癌(HCC)发现于因病毒性肝炎、黄曲霉素或慢性酒精中毒所致的肝硬化患者。在西方国家也有很多不伴有肝硬化的肝癌患者。肝硬化的存在与否与HCC的关系尚未确定。肝细胞坏死、肝纤维化、肝细胞再生的反复演变最终导致癌变的可... 详细信息

大多数肝细胞癌(HCC)发现于因病毒性肝炎、黄曲霉素或慢性酒精中毒所致的肝硬化患者。在西方国家也有很多不伴有肝硬化的肝癌患者。肝硬化的存在与否与HCC的关系尚未确定。肝细胞坏死、肝纤维化、肝细胞再生的反复演变最终导致癌变的可能性,并不能解释43％无肝硬化性HCC的流行率。这亦就使我们更有理由认为两种独立的致病过程系由同一病因所致的可能性。

关键词：癌前病变分子病理学等位基因增生结节染色体异型增生早期肝细胞癌微小卫星病毒性肝炎肝纤维化

Blueberry and cranberry pangenomes as a resource for future genetic studies and breeding efforts

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Horticulture Research 2023年第11期10卷 96-105页

作者： Alan E.Yocca Adrian Platts Elizabeth Alger Scott Teresi Molla F.Mengist Juliana Benevenuto Luis Felipe V.Ferrão MacKenzie jacobs Michal Babinski Maria Magallanes-Lundback Philipp Bayer Agnieszka Golicz Jodi L.Humann Dorrie Main Richard V.Espley David Chagné Nick W.Albert Sara Montanari Nicholi Vorsa James Polashock Luis Díaz-Garcia Juan Zalapa Nahla V.Bassil Patricio R.Munoz Massimo Iorizzo Patrick P.Edger Department of Horticulture Michigan State UniversityEast LansingMI48824United States Department of Plant Biology Michigan State UniversityEast LansingMI48824United States Genetics and Genome Sciences Michigan State UniversityEast LansingMI48824United States Plants for Human Health Institute North Carolina State UniversityKannapolisNC United States Horticultural Sciences Department University of FloridaGainesvilleFL 32611United States Department of Biochemistry and Molecular Biology Michigan State UniversityEast LansingMI48824United States University of Western Australia Perth 6009 Australia Justus Liebig University Giessen35390 Germany Department of Horticulture Washington State UniversityPullmanWA99163United States The New Zealand Institute for Plant and Food Research Limited(PFR) AucklandNew Zealand The New Zealand Institute for Plant and Food Research Limited(PFR) PalmerstonNew Zealand The New Zealand Institute for Plant and Food Research Limited(PFR) MotuekaNew Zealand SEBS Plant BiologyRutgers UniversityNew Brunswick NJ 01019 United States Department of Viticulture and Enology University of CaliforniaDavisDavisCA 95616United States National Clonal Germplasm Repository USDA-ARSCorvallisOR 97333United States Department of Horticulture North Carolina State UniversityKannapolisNC United States MSU AgBioResearch Michigan State UniversityEast LansingMI48824United States

Domestication of cranberry and blueberry began in the United States in the early 1800s and 1900s,respectively,and in part owing to their f lavors and health-promoting benefits are now cultivated and consumed *** industry continues to face a wide variety of production challenges(*** pressures),as well as a demand for higher-yielding cultivars with improved fruit quality ***,molecular tools to help guide breeding efforts for these species have been relatively limited compared with those for other high-value ***,we describe the construction and analysis of the first pangenome for both blueberry and *** analysis of these pangenomes revealed both crops exhibit great genetic diversity,including the presence-absence variation of 48.4%genes in highbush blueberry and 47.0%genes in *** genes,those not shared by all cultivars,are significantly enriched with molecular functions associated with disease resistance and the biosynthesis of specialized metabolites,including compounds previously associated with improving fruit quality *** discovery of thousands of genes,not present in the previous reference genomes for blueberry and cranberry,will serve as the basis of future research and as potential targets for future breeding *** pangenome,as a multiple-sequence alignment,as well as individual annotated genomes,are publicly available for analysis on the Genome Database for Vaccinium-a curated and integrated web-based relational ***,the core-gene predictions from the pangenomes will serve useful to develop a community genotyping platform to guide future molecular breeding efforts across the family.

关键词： breeding cultivar crops