oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 207 )

2018 ( 5231 )

2017 ( 5364 )

2016 ( 5779 )

Custom range...

Search Results: 1 - 10 of 250536 matches for " 陈建敏 "
All listed articles are free for downloading (OA Articles)
Page 1 /250536
Display every page Item
抑制O~6-甲基鸟嘌呤-DNA甲基转移酶活性与肿瘤化疗关系的研究

科学通报 , 1992,
Abstract: 肿瘤细胞耐药性是化疗成功的主要障碍。近年来,随着对其形成机制的逐渐揭示,如何逆转和去除肿瘤细胞耐药的分子基础已成为肿瘤化疗研究中的一个重要方向叫。亚硝脲类药物如嘧啶亚硝脲[1-(4-amino-2-methyl-5-pyrimidinyl)methyl-3-(2-chloroethyl)-3-nitrosoureahydrochloride,ACNU]和双氯乙亚硝脲[1,3-bis-(2-chloroethyl)-1-nitrosourea,BCNU]等
三突花蛛有效活动的初步研究
,
动物学杂志 , 2004,
Abstract:
2024铝合金在干摩擦往复运动条件下的磨损图研究
张爱民,
摩擦学学报 , 2002,
Abstract: 研究了2024铝合金/45#钢摩擦副在干摩擦往复运动条件下的摩擦学特性,系统考察了载荷98~490N和速度0.083~1.167m/s范围内摩擦副材料的磨损行为;通过对磨损表面、断面以及铝在摩擦偶件的转移膜及磨屑的显微分析,建立了2024铝合金的磨损机制转变图.结果表明:2024铝合金在低速和轻载条件下的磨损机制主要是磨粒磨损和剥层磨损;而在高速重载条件下的磨损机制主要是严重熔融磨损,并伴随向偶件材料表面的大量转移
多孔质铝阳极氧化膜的结构及其摩擦学性能研究
徐洮,
摩擦学学报 , 1996,
Abstract: 多也质铝阳极氧化膜具有质硬、耐磨和抗腐蚀等诸多优点,是目前广泛的工程材料之一,籽探讨这类的摩擦学性能与其结构摧在联系,利用透射电子显微镜以因硫酸和草酸是解液中生成的多孔质铝阳极氧化的结构进行了观察分析,产对其在干摩擦下的摩擦学性能作了考察,观察发现,在选定的制膜工艺条件下,分别于硫酸和草酸电解液中生成的铝阳极氧化膜具有多孔质结构,在阳极氧化膜的中有一层由致密的氧化物质组成的“障壁层”,摩擦试验结果
基于数据库网络的护理岗位分层绩效考核体系的建立与成效分析
The Establishment and Effect Analysis of the Hierarchical Performance Evaluation System of Nursing Post Based on Database Network
 [PDF]

, 马超, 张翠萍, 舒晓, 蒲兰
Service Science and Management (SSEM) , 2016, DOI: 10.12677/SSEM.2016.52005
Abstract:
目的:通过医院的数据库网络信息化管理平台为依托,建立护理人员岗位分层绩效考核系统,提高肿瘤专科医院护理人员工作效率及服务品质。方法:根据Delphi法确定由护士工作量、工作质量、职称、年资、岗位及学历组成的护理人员层级绩效考核系统嵌入医院的HIS系统,实施对护士的层级绩效考核,比较层级绩效考核前后护士离职率、患者对护理工作满意度、护士医生对护理工作满意度、护理质量得分等情况。结果:层级绩效实施后护士离职率低于实施前(p < 0.05),护理质量检查得分高于实施前(p < 0.05),实施前后患者对护理工作满意度、护士医生对护理工作满意度均有差异有统计学意义(p < 0.05),实施前后护士护理工作绩效评价自评与他评均有差异有统计学意义(p < 0.05)。结论:基于数据网络化的护理岗位层级护理绩效管理体系,有利于提升肿瘤专科医院护理人员的工作效率及职业价值,提高医院整体管理水平及服务品质,有力促进优质护理服务的深化。
Objective: Based on the hospital database network information management platform, we establish the nursing staff post hierarchical performance evaluation system and improve the quality of service of the hospital nursing staff. Methods: According to the Delphi method which determines the workload of nurses, quality of work, title, seniority, position and degree of nursing staff level of performance appraisal system get into the hospital HIS system to appraise the implementation of performance level of nurses, level of performance assessment and nursing turnover rate, the patient to nurses the work degree of satisfaction, doctors and nurses to nurses the work degree of satisfaction and nursing quality score, etc. Results: The after implementation of the level of per-formance of nurse turnover rate is lower than before (p < 0.05); the nursing quality examination score is higher than before (p < 0.05); the implementation of the patients before and after nursing job satisfaction, doctors and nurses to nursing job satisfaction were different with statistical signi-ficance (p < 0.05); the implementation of before and after the nurses’ work performance evaluation of self rating and other rated the differences were statistically significant (p < 0.05). Conclusion: Based data networking nursing post level nursing performance management system can enhance the tumor hospital nursing staff’s work efficiency and occupation value, improve the hospital management level and service quality, and have a strong impetus to the deepening of the quality of nursing service.
70份杧果种质果实矿质元素评价与统计学分析
Assessment and Statistical Analysis of Mineral Elements in Fruits of 70 Mango Cultivars
 [PDF]

,, 邓穗生, 业渊, 高爱平
Hans Journal of Agricultural Sciences (HJAS) , 2016, DOI: 10.12677/HJAS.2016.62005
Abstract:
采用原子吸收光谱法对农业部儋州杧果种质资源圃70份杧果种质果实中的9种矿质元素(K、Ca、P、Mg、Fe、Mn、Cu、Zn和B)含量进行了测定,采用方差分析、相关分析和主成分分析方法对所测定的矿质元素进行了统计学分析。统计结果表明:杧果果肉9种矿质元素中,大量元素含量依次为K > Ca > P > Mg,微量元素含量依次为Fe > Mn > Zn > B > Cu,变异系数为Mn > Cu > Zn > Fe > B > P > Ca > Mg > K;方差分析结果表明:70份杧果种质9种矿质元素间F = 1.43,Pr = 0.0177,Pr > F,9种矿质元素含量在70份杧果种质果肉中存在显著性差异;相关性分析结果表明:矿质元素之间存在着显著和极显著的相关性,其中K和Mg之间正相关性最大,相关系数达0.663,Ca和P负相关性最大,相关系数为?0.332。
Nine mineral elements (K, Ca, P, Mg, Fe, Mn, Cu, Zn, B) in the germplasm sarcocarp of 70 mango cul-tivars which were preserved in Germplasm Repository of Mango, Danzhou city, Ministry of Agri-culture were detected using an atomic absorption spectrometer. Variance, correlation and principal component analysis methods were used to evaluate the experimental results. The statistical results showed that the macroelements of the 70 mango cultivars are K > Ca > P > Mg; the microelements are Fe > Mn > Zn > B > Cu; and the coefficients of variation are Mn > Cu > Zn > Fe > B > P > Ca > Mg > K. The variance analysis results showed that in nine mineral elements of the 70 mango cultivars, F=1.43, Pr = 0.0177, Pr > F, whose content has significant difference in the 70 mango cultivars. The correlation analysis results showed that there are significant and extremely significant correlations among mineral elements. The positive correlation between K and Mg is the most significant (r = 0.663), while the most significant negative correlation is between Ca and P (r = ?0.332).
从单分子到细胞的生物膜与膜蛋白研究--美国Purdue大学关于生物膜的研究计划简介
,孙德兰
植物学报 , 2003,
Abstract:
添加剂与铝合金的相互作用研究:Ⅱ静态反应膜和润滑机制的FTIR …
胡丽天,
摩擦学学报 , 1999,
Abstract: 用红外显微镜(FTIRmicroscope)和X射线光电子能谱(XPS)研究了静态下硫化异丁烯(SO)、亚磷酸二正丁酯(DBP)、二烷基二硫代磷酸锌(ZDDP)及十二酸(LA)以质量分数2%的比例添加到液体石蜡中与铝合金所形成的油浸反应膜的化学组成及结构,结果表明:DBP易与铝合金发生化学反应并形成主要由亚磷酸铝组成的表面膜;ZDDP在180℃下与铝合金反应形成主要含磷酸铝的表面膜;SO及LA与铝
铝质材料的摩擦学表面改进
,王安钧
摩擦学学报 , 1994,
Abstract: 在工程应用中,铝质材料是一类重要性仅次于钢铁的金属材料,但是,铝质材料作为摩擦学材料,却存在着质软,摩擦系数高,磨损大,容易拉伤且难以润滑等严重弱点,为了总结科学工作者在铝质材料的摩擦学表面改性方面的研究成果,借以推动有关工作的深入开展,对材料的各种摩擦学表面改性技术的研究进及其发展现状作了概述,其中,重点综合介绍的是本世纪八十年代新发展起来的自润滑阳极氧化铝处理技术的基本原理,处理方法和应用等。
添加剂与铝合金的相互作用研究:Ⅰ.静态反应膜及油润滑下的摩擦 …
胡丽天,
摩擦学学报 , 1998,
Abstract: 静态下分别于25℃,90℃及180℃下进行硫化异丁烯,亚磷酸二正丁酯,SO+DBP的混合物(质量比20:1),二烷基二硫代磷酸锌(ZDDP)及十二酸(LA)5种添加剂均以质量分数为2%的比例添加到液体石蜡(LP)中与铝合金进行油浸试验。用动-静摩擦系数精密测定仪评价了在铝合金表面上所形成的静态反应膜的摩擦磨损行为,并考察了上述添加剂在LP中对铝合金-钢摩擦副的润滑作用。结果表明:静态反膜的摩擦磨损
Page 1 /250536
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.