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Search Results: 1 - 10 of 331071 matches for " 王翠玲 "
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磷水平对不同磷效率小麦叶绿素荧光参数的影响
,
植物营养与肥料学报 , 2010, DOI: 10.11674/zwyf.2010.0335
Abstract: 采用溶液培养方法,研究了磷水平(0、10、100、500和1000μmol/L)对不同磷效率小麦(西农979和小偃6号)幼苗基部第1叶叶绿素荧光参数与叶绿素含量的影响。结果表明,随着磷水平的增加,两小麦幼苗基部第1叶的叶绿素a荧光参数均表现出先升高后降低的趋势,不同的是小偃6号在磷水平为100μmol/L时就达到了峰值,而西农979的最大值则出现在500μmol/L磷水平下。说明小偃6号(磷高效)的光能转换效率和电子传递效率高于西农979,且受低磷胁迫的影响较小。
因子分析和数量分类在油菜种质资源遗传多样性研究中的应用
Factor Analysis and Numerical Taxonomy Applied in the Research of Germpasm Genetic Polymorphism in Brassica napus L.
 [PDF]

王道杰,, 李艳萍, 再青
Botanical Research (BR) , 2014, DOI: 10.12677/BR.2014.36027
Abstract:
应用计算机系统对87份油菜种质资源的14个性状进行了因子和聚类分析。结果表明,14个性状的变异系数值从6.02% (含油量)到96.87%(硫苷)含量,变异范围较大,表明供试材料的遗传多样性是显著的。通过相关分析表明,主花絮有效角果数是1个比较重要的性状,它与多数产量构成因子呈显著或极显著正相关,与株高、一次有效分枝部位、主花序有效长度等株型性状呈极显著正相关。采用主成分分析将14个性状归纳为6个主成分,它们占总遗传变量的80.43%。将87份材料的14个性状值标准化处理后进行聚类分析,结果将87份油菜种质资源分为5个类群,而根据4个品质性状指标进行聚类,将87份油菜种质资源分为6个类群。
Using computer systems, the factor and cluster analysis was done to 14 quality traits of 87 rapeseed germplasm resources. The results showed that the coefficient of variability of 14 agronomic traits ranged greatly from 6.02% (oil content) to 96.87% (glucosinolate content), which indicated the diversity of materials was significant. The correlation analysis shows that the effective silique of main inflorescence is an important trait. It is in significant or highly significant positive correlation with most factors of yield components, and it is in significant positive correlation with plant height, an effective branch height, effective length of main inflorescence and other plant traits. Adopting the principal component analysis, 14 traits were divided into 6 principal components, which accounted for 80.43% of total genetic variations. After 14 quality traits of 87 materials have been standardized, through cluster analysis, all materials were classified into 5 groups, but 6 groups according to 4 quality traits.
动态荷载作用下的路表响应分析
,复明,周晶
工程力学 , 2001,
Abstract: 本文建立了柔性路面结构的层状半空间粘弹性力学分析模型,并从基本方程出发,在频域推导了在动荷载作用下的路表位移响应解析表达式。通过与相关文献计算结果的对比,对方法的有效性及正确性进行了验证。数值计算表明,利用本文方法求解路表的动态响应具有简单方便、精度较高的优点。
路面结构的动态反分析
复明,,周晶
工程力学 , 2002,
Abstract: 本文建立了路面结构的层状粘弹性模型,在对FWD无损检测数值进行动态分析的基础上,采用系统识别方法对路面结构层模量数值进行了动态反分析研究。数值结果表明,反算过程稳定收敛,系统识别方法对于路面结构层模量的动态识别问题是适用的、有效的。
fwd无损检测数值的动态分析
,复明,周晶
岩石工程学报 , 1999,
Abstract: 1 引  言 *目前,高速公路事业在世界各国引起普遍重视,我国的高等级公路建设也在蓬勃发展。路面检测技术,作为公路建设与管理中的关键性、基础性技术,不仅对于检测和控制工程质量至关重要,而且决定着路网养护决策的科学性,并直接影响养路资金分配的合理性,因而在国内外也深受重视[1]。近20年来,路面的无损检测与评价技术因为具有不损害路面结构的独特优势而在国内外得到了迅速的发展。作为最重要的路面结构状况评价指标,弯沉的量测与分析技术发展十分迅速,自1953年贝克曼(benkleman)发明梁式弯沉仪以来,路面弯沉检测设备已从静力弯沉仪发展到能够模拟行车荷载作用的落锤式弯沉仪(fwd),从单点最大弯沉检
整合医学对淋巴瘤样丘疹病分型及治疗 的探讨
A discussion on classification and therapy of lymphomatoid papulosis based on holistic integrative medicine

李渊,,
- , 2017,
Abstract: 淋巴瘤样丘疹病是一种相对常见的低度恶性皮肤淋巴瘤,与原发性皮肤间变性大细胞淋巴瘤同属于 皮肤CD30阳性淋巴细胞增生性疾病。其分型主要有A、B、C、D、E和F型,还有一些特殊的临床及病理分型。 但是我们的分型越多就越困惑,因为同样的临床表现与预后,却有着如此截然不同的组织病理学特点。针对淋 巴瘤样丘疹病的治疗方法众多,但至今没有证据表明任何一种治疗方案能够减少复发的频率和数量,而且在任 何治疗中断后皮损都必然会复发。更重要的是,没有一种治疗能够有效地预防继发淋巴瘤的发生。本文通过回 顾淋巴瘤样丘疹病的文献归纳总结出目前最新的组织病理学分类,及对临床预后具有影响的分子和基因,以及 可以用来靶向治疗的分子。根据整合医学的思想,制定出一套在现有的技术水平下可以实现的、合理的且易于 操作的诊治流程。
Lymphomatoid papulosis is a relatively common low-grade malignant cutaneous lymphoma. Together with primary cutaneous anaplastic large cell lymphoma, they form the disease spectrum named CD30-positive lymphoproliferative disorders. The subtypes include type A, B, C, D, E and F basically, and some special clinical and histopathological variants. With its increasing subtypes, we are confused more and more. They might present the same clinical manifestations and prognosis while having the distinctly different histopathological features. Although many kinds of therapies for lymphomatoid papulosis are available, there are no data to support the efficacy of any given treatment scheme in diminishing the number and frequency of recurrences, and cutaneous relapses after discontinuation of any type of treatment are the rule. Even more importantly, there is no therapy that has been demonstrated to have a preventive effect on the development of a secondary lymphoma. In this article, we reviewed the research history of lymphomatoid papulosis, analyzed the basic subtypes of lymphomatoid papulosis, and introduced the molecules and genes which could affect the prognosis of disease and be useful for the targeted therapy. We formulated a diagnosis and therapy guide which is more reasonable and easier to operate from a perspective of holistic integrative medicine
不同栽培环境下桃果实香气成分的比较分析
Comparative Analysis of Aroma Components of ‘Lumi 1’ Cultivated in Different Cultivation Environments
 [PDF]

, 付喜, 肖伟, 陈修德,, , 高东升
Hans Journal of Agricultural Sciences (HJAS) , 2015, DOI: 10.12677/HJAS.2015.55025
Abstract:
以选育的毛桃新品种‘鲁蜜1号’为试材,采用顶空固相微萃取(HS–SPME)结合气相色谱—质谱(GC–MS)联用技术,测定了不同环境条件下(露天与设施栽培)桃果实香气成分。结果表明,不同栽培条件下的桃果实中香气物质种类及含量差异较大。露天条件下检测到8类26种化合物,设施条件下香气种类及含量略少,检测到5类25种化合物,没有检测到醛类、酮类、酸类化合物。其中酯类均为香气主要成分,分别占总香气含量的91.23%、84.89%。乙酸己酯含量最高,分别占72.4%和58.98%。在本实验中,共检测出7种特征香气,露天栽培条件下为7种,总含量为90.61%。设施栽培条件下仅有4种,总含量低于露天栽培,为88.26%。设施栽培条件下,果实中“果香型”酯类化合物含量减少,“青香型”醇类化合物种类及含量减少,并且缺少醛类、酸类和酮类化合物,“花香型”萜烯类化合物增加,是造成风味不足的主要原因。
The purpose of this study is to investigate the components of aroma by selecting a new variety of ‘Lumi 1’ peach fruit under distinct conditions (outdoors and greenhouse) through using Head Space Solid-Phase Microextraction (HS-SPME) and Gas Chromatography-Mass Spectrometry (GC-MS) coupled techniques. The results show that there are significant differences in the components of aroma in peach fruit under different cultivating conditions. None of aldehydes, ketones, and acids are found in both outdoor and greenhouse conditions; however, 8 categories of aroma of 26 kinds of compounds are found outdoors, which are higher than 5 categories of aroma of 25 kinds of compounds in greenhouse. The major components of aroma are esters, accounting for 91.23% and 84.89% respectively, of which the highest contents of hexylacetate are 72.4% and 58.98% respec-tively. A total of 7 kinds of characteristic aroma are found in the current study, and the content of 7 aromas outdoors is 90.61%, which is lower than 88.26% of 4 aromas in greenhouse. The main reasons for being lack of flavour in greenhouse result from the decrease of ester compounds of “fruity type”, the decrease of the categories and contents of alcohol compounds of “green type”, the lack of aldehydes, acids and flavonoids, and the increase of terpenoid compounds of “floral type”.
对综合性大学微生物学实验课的重新认识*
,陈一,
微生物学通报 , 1999,
Abstract:
老年人夫妻冲突一般特点及其与依恋的关系
倩蓉,大华,
心里发展与教育 , 2012,
Abstract: 采用开放式与封闭式问卷相结合的方式对27对60~84岁(m=69.93±5.89)的老年夫妻测查了老年人夫妻依恋风格及夫妻冲突的特点。结果表明,老年人夫妻冲突具有低频率、低强度、较低的威胁性、较高的建设性及易解决的特点;不同依恋风格的老年人夫妻冲突的强度、频率、冲突解决程度均不存在显著差异;在冲突性质上,安全型依恋风格老年人感知到的冲突建设性显著高于不安全型依恋风格个体,但其感知到的冲突威胁性无显著差异;老年夫妻对冲突的感知存在冲突知觉一致性效应。
河南省小麦全蚀病菌变种类型鉴定
,燕照,施艳,振跃
河南农业科学 , 2013,
Abstract: 为了解河南省小麦全蚀病菌的变种类型,2011年从河南省郑州、许昌、开封、周口、漯河、商丘和驻马店等地采集小麦全蚀病株,并对其所属的变种类型进行了形态学、生理学和分子生物学鉴定。经过分离、纯化,共得到74个菌株,根据形态及生理特性的测定结果,初步确定所有菌株均为禾顶囊壳小麦变种(Gaeumanomycesgraminisvar.tritici)。采用小麦全蚀病菌4个变种的特异性引物分别对菌株DNA进行PCR扩增,所有菌株均获得大约870bp的条带,进一步确定所采菌株为禾顶囊壳小麦变种。温室测定74个菌株对小麦的致病力,结果表明,河南省小麦全蚀病菌株以中强致病力为主,不同地区菌株间致病力存在显著差异。
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