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空中英语教室（高级版．彭蒙惠英语） 2013年第4期 24-26页

作者： Jon Swartz Scott martin page DESIGN VICKY TSUNG

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小家——设计经典

Ergot Alkaloid Effects on Bovine Sperm Motility In Vitro

作者： (新加坡)page One编辑部

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Advances in Reproductive Sciences 2019年第1期7卷 7-15页

作者： Ryan page Toby Lester Rick Rorie Charles Rosenkrans Jr. Department of Animal Science Division of Agriculture University of Arkansas System Fayetteville Arkansas USA

Cattle in some parts of the world graze pastures that consist of tall fescue that may contain ergot alkaloid contamination. Those ergot alkaloids are associated with reduced reproductive rates in cattle. Our objective was to determine if ergot alkaloids [dihydroergotamine (DHET), ergonovine (EN), and ergotamine (ET)] directly affect bovine sperm characteristics. Spermatozoa were collected from mature Angus (n = 2) and Balancer (n = 4) bulls. Within bull, treatments were structured as a 3 × 5 factorial with three alkaloids (DHET, EN, and ET) and five concentrations of each alkaloid (0, 33, 66, 100, or 200 μM). Spermatozoa (25 × 106) were incubated (39?C) in 1 mL of modified sperm medium. Sperm motility characteristics were evaluated using CASA (Hamiliton Thorne IVOS, Beverly, MA) at 0, 3, and 6 h after initial alkaloid exposure. Initial sperm motility was (69% ± 1.1%) and declined (p = 0.01) to (35% ± 2.6%) at 6 h. Sperm motility decreased (p p perm motility and morphology, which adds to our understanding of how ergot alkaloids may hinder cattle reproductive rates.

关键词： CASA Bull Spermatozoa Toxins

Quantifying the spatial and temporal distribution of tanglehead (Heteropogon contortus) on South Texas rangelands

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Ecological processes 2018年第1期7卷 14-22页

作者： Jose M.Mata Humberto L.perotto-Baldivieso Fidel Hernández Eric D.Grahmann Sandra Rideout-Hanzak John T.Edwards Michael T.page Taylor M.Shedd Caesar Kleberg Wildlife Research Institute Texas A&M University-Kingsville700 University Blvd.MSC 218KingsvilleTX 78363USA

Introduction:Tanglehead is a grass native to southwestern US rangelands;however,its prevalence as a native invasive on South Texas rangelands has increased rapidly during the last *** areas of monotypic stands have emerged in Jim Hogg,Duval,Brooks,and Kleberg *** aim of this research is to understand the spatial and temporal dynamics of these invasions as a model for the assessment of native invasive *** specific objectives were to(1)evaluate the feasibility of classifying tanglehead using 1-m resolution imagery data,(2)assess the spatial and temporal distribution of tanglehead in relation to soil type and distance from roads,and(3)quantify the temporal and spatial distribution of tanglehead on our study *** combined remote sensing approaches with landscape metrics to quantify the spatial and temporal distribution of tanglehead in five locations across our study *** calculated the normalized difference vegetation index and combined it with the original aerial imagery to conduct an unsupervised classification with the following land cover classes:woody vegetation,tanglehead,non-tanglehead herbaceous,and bare *** type and the distance from roads were assessed to determine the relationship between these factors and tanglehead spatial ***:We were able to successfully map tanglehead using the 1-m *** image classification approach resulted in accuracies greater than 85%for all *** occurred in sandy,loamy sand,and sandy loam *** 70% of tanglehead cover occurred within the first 150 m from the edge of *** cover increased from 7.1%(SE=1.1%)in 2008 to 17.8%(SE=5.4%)in *** established,small patches of tanglehead began aggregating or coalescing with existing stands,thereby creating larger patches over larger ***:Our study has shown the value of analyzing spatiotemporal dynamics of tanglehead with remote sensing techniques and landscape metrics to improve our unders

关键词： distribution landscape sandy

Concealed post-partum haemorrhageaemor: A case report

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Open Journal of Obstetrics and Gynecology 2013年第4期3卷 381-382页

作者： Anne De Haan Noortje Van Oostrum page Geert Herman Department of Gynaecology and Obstetrics Jan Yperman Hospital Ieper Belgium

A woman with five previous normal vaginal deliveries and a history of right salpingectomy for ectopic preg-nancyhas sudden pain in term labour, with epidural analgesia. A concurrent worsening of fetal heart rate pattern with bradycardia urges quick vacuum delivery. Maternal post-partum pain and hemoglobin (Hb) drop suggest intra-abdominal haemorrhage. The combination of sudden, strong intra-partum pain and fetal distress should raise the suspicion of intra-abdominal haemorrhage. After vaginal delivery an accurate follow-up is mandatory.

关键词： Concealed Haemorrhage Rupture of Utero-Ovarian Vessels Labour

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露天矿钻机控制可吸入粉尘的新技术

矿山机械 1989年第8期17卷 36-37页

作者： Steven J.page 陈隆玉

露天矿炮孔钻机是可吸入人体的石英粉尘的罪恶之源。根据美国矿山安全和健康管理局(MSHA)的资料,钻探工及其助手吸入石英粉尘量最大,在剥离打钻时更是如此。因此,许多露天钻进作业都有严格的粉尘控制标准,即0.1～0.5mg/m^3。露天矿钻机... 详细信息

露天矿炮孔钻机是可吸入人体的石英粉尘的罪恶之源。根据美国矿山安全和健康管理局(MSHA)的资料,钻探工及其助手吸入石英粉尘量最大,在剥离打钻时更是如此。因此,许多露天钻进作业都有严格的粉尘控制标准,即0.1～0.5mg/m^3。露天矿钻机的粉尘控制有干式旋流集尘器(过滤式集尘器),和湿式除尘设备(将小量的水喷入环形风流中)。这两种方法的粉尘控制率都达95％以上。但是,两者都存在要么粉尘控制率降低,要么凿岩效率下降这一问题。为了解决这些问题。

关键词：露天矿钻机粉尘控制

Oral Lactobacillus plantarumNCIMB 8825 Inhibits Adhesion, Invasion and Metabolism of Neisseria meningitidisSerogroup B and Affords Anti-Inflammatory and Cytotoxic protection to Nasopharyngeal Epithelial Cells

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Advances in Microbiology 2014年第2期4卷 81-93页

作者： Tezera Liku Bekele page Keith Rhakimova Adelina Salisbury Vyvyan Davenport Victoria University of Southampton Southampton UK University of the West of England Bristol UK

In this study, we investigate the potential for oral Lactobacilli (LB) to afford innate protection against nasopharyngeal coloniser Neisseria meningitidis serogroup B (NmB), which causes the bulk of UK meningococcal disease. Oral isolates of L. plantarum, L. salivarious, L. casei, L. rhamnosus, L. gasseri and gut probiotic L. rhamnosus GG were assessed for their ability to suppress nasopharyngeal epithelial inflammatory responses to pathogenic NmB. The specificity of attenuation was examined using TLR 2 ligand, pam3Cys, and early response cytokine IL1β;and the mechanism of attenuation was explored using heat-killed organisms and conditioned medium. pro-inflammatory IL-6 and TNFα cytokine secretion was quantified by ELISA and associated cell death was quantified by pI staining and LDH release. NmB adhesion, invasion and metabolism were determined using standard gentamicin protection with viable counts, and bioluminescence, respectively. L. plantarum and L. salivarious suppressed IL-6 and TNFα secretions from NmB-infected epithelial cells. LB did not need to be alive and could suppress using secretions, which were independent of TLR2 or IL1β receptor signalling. L. plantarum, in particular, reduced NmB-induced necrotic cell death of epithelial monolayers. Like L. salivarious, it significantly inhibited NmB adhesion but uniquely L. plantarum abolished NmB invasion. Using bioluminescence as a reporter of pathogen metabolism, L. plantarum and its secretions were found to inhibit NmB metabolism during cell invasion assays. We conclude that oral L. plantarum and its secretions could be used to help reduce the burden of meningococcal disease by removing the intracellular nasopharyngeal reservoir of NmB.

关键词： Epithelial protection Neisseria meningitides Lactobacillus Innate Lux

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社会工作促进城市老年群体参与社区事务研究

社会工作促进城市老年群体参与社区事务研究

作者：曹云（page Cao）广西师范大学

学位级别：硕士

社会治理创新作为近几年社会和政府非常重视的课题,关于它的研究讨论主要以多方参与为核心,各学者和实践者一致认同需要打破国家一元治理的局面,以民主、参与、有限政府的形态重新塑造一个由社会治理社会的善治模式,将传统的“管理”改... 详细信息

社会治理创新作为近几年社会和政府非常重视的课题,关于它的研究讨论主要以多方参与为核心,各学者和实践者一致认同需要打破国家一元治理的局面,以民主、参与、有限政府的形态重新塑造一个由社会治理社会的善治模式,将传统的“管理”改换为“治理”,支持社会参与,包括政府、居委、家庭、居民群体、社会组织,共同作为治理主体参与到社会治理中去,而治理应该从民众的生活入手、从社区入手。目前作为社会治理创新的新路径,参与式治理在研究和实践中被越来越多的人和组织认可,参与式治理的核心在于治理主体的多元化,在于培育社区力量和培养社区社工。因此,本研究将目光聚焦于社区力量的培育和居民能力的提升,同时,随着我国老龄化程度的加深,老年群体在社区中也占据越来越大的比重,如何促进城市社区老人参与社区事务,对于培养社区力量至关重要。本文在参与式治理背景下,基于政府购买的项目支持,尝试研究特定地区中社会工作如何促进城市老年群体参与到社区事务中去。研究采用行动研究的方法开展,前期通过问卷、访谈等方式收集信息,考察老年群体参与社区事务的具体情况,最终从对老年群体社区参与的类型、内容、方式、途径、层次等各类信息的分析中总结发现,老年人参加社区事务呈现出女性多于男性,但男性却在参与中起到更重要的作用;参与内容多为娱乐性活动;基于不同年龄层次存在参与特征;老年群体在参与中存在参与层次之分等一系列的规律和特征,基于此,在结合项目目标和居民满足需求的前提下研究设想及可行性行动方案。研究结果表明,以社区领袖为核心、以组织化、项目化为运作方式对社区老年群体进行动员和培养,对促进老年群体参与社区事务的意愿和能力起到积极的作用,同时对挖掘社区领袖、培养社区老年群体公民意识也起到推动作用。因此在社会工作促进老年群体参与社区事务方面可以得出一个地方性实务模式:以社区领袖为核心的组织化参与和项目化运作。

关键词：参与式治理社会工作行动研究社区自组织社区领袖

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虚拟内存共享我有我办法

电脑 2003年第8期 45-46页

作者： page

操作系统的发展是有目共睹的，先不说我们一般DIY们比较陌生的什么O/S、Linux等等，就说我们最熟悉的微软操作系统吧，由纯粹的文字界面DOS到Windows3.11、95、97、NT、Xp、2000等，一只手都已经数不下了！而在现在的流行微软操作系统中... 详细信息

操作系统的发展是有目共睹的，先不说我们一般DIY们比较陌生的什么O/S、Linux等等，就说我们最熟悉的微软操作系统吧，由纯粹的文字界面DOS到Windows3.11、95、97、NT、Xp、2000等，一只手都已经数不下了！而在现在的流行微软操作系统中，98、2000 Server和Xp，甚至最新的2003版，各自有各自的优点，“博爱”的我当然就更是希望可以同时拥有它们了！

关键词：计算机操作系统虚拟内存共享硬盘

LionRank: lion algorithm-based metasearch engines for re-ranking of webpages

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Science China(Information Sciences) 2018年第12期61卷 65-80页

作者： p.VIJAYA Satish CHANDER Waljat College of Applied Sciences

Due to the rapid growth of the web, the process of collecting the relevant web pages based on the user query is one of the major challenging tasks in recent days. Hence, it is very complicated for the users to know the most relevant information even though various search engines are widely employed. To deal with users' trouble in identifying the relevant information from the web, we have proposed a meta-lion search engine to capture and analyze the ranking scores of various search engines and thereby, generate the re-ranked score results. Accordingly, LionRank, a lion algorithm-based meta-search engine is proposed for the re-ranking of the web pages. Here, different features like text based, factor based, rank based and classifier based features are used by the underlying search engines. In classifier based feature extraction,we have used the fuzzy integrated extended nearest neighbor(FENN) classifier to include the semantics in feature extraction. Moreover, an intelligent re-ranking process is proposed based on the lion algorithm to fuse the features scores optimally. Finally, the results of the proposed LionRank is analyzed with the web page database collected through four benchmark queries, and the quantitative performance are analyzed using precision, recall, and F-score. From the results, we proved that the proposed LionRank obtained the maximum F-score of 81% as compared with that of existing search engines like QuadRank, Outrank, Google,Yahoo, and Bing.

关键词： web technology meta-search engine feature extraction lion algorithm FENN classifier