Results 41 to 50 of about 5,044 (193)
Summary Repetitive DNA is a feature of all organisms, ranging from archaea and plants to humans. DNA repeats can be seen both in coding and in noncoding regions of the genome. Due to the recurring nature of the sequences, simple DNA repeats tend to be more prone to errors during replication and repair, resulting in variability in their unit length ...
Sridevi Sureshkumar +3 more
wiley +1 more source
利用变压器的油色谱试验数据对神经网络进行训练,将训练后的神经网络用于变压器的状态诊断。同时利用遗传算法优化神经网络的结构。算例结果表明,利用遗传算法和神经网络相结合的人工智能方法可以有效地诊断变压器的状态。
戴仁昶, 赵寿生
doaj
Plant order‐level Sankey plot illustrating plant use of ethnolinguistic groups for key disease types based on organ systems and use. Each node represents the strength of its interaction or usage. ABSTRACT Many human populations rely on natural remedies for health and healing, with traditional medicinal plants playing a vital role in diverse ...
Krizler C. Tanalgo +15 more
wiley +1 more source
The population genetic structure and the pattern of distribution of Spartina alterniflora in Zhangjiang Estuary [PDF]
本文主要以福建省漳州云霄漳江口国家级红树林保护区为研究对象,利用ISSR分子标记技术分析该地区互花米草的遗传多样性,揭示该地区互花米草的种群遗传结构,同时比较了天津塘沽大桥、宁德三都湾、上海崇明东滩、珠海淇澳岛、泉州洛阳桥、广西合浦沙田港等6个互花米草种群的遗传多样性,探讨了互花米草克隆生长入侵的可能机制,为互花米草入侵管理和防治提供一定的科学依据。 从100条ISSR引物中筛选出可以扩增出清晰、重复性好的18条引物,对福建省云霄漳江口国家级红树林保护区253份材料扩增 ...
王刚
core
Intragenic PNPLA1 duplication in Labrador retrievers with nonepidermolytic ichthyosis
Background – Ichthyoses represent a heterogeneous group of cornification disorders characterised by epidermal scaling. Objectives – To describe the clinical, histopathological and genetic analysis of a Labrador retriever with nonepidermolytic ichthyosis, and the results of a Labrador retriever population screening for a newly detected PNPLA1 genomic ...
Stefan J. Rietmann +7 more
wiley +1 more source
文章简要介绍了几种现代非线性优化算法,在两级偏振控制器和时延线级联补偿器结构的基础上,采用遗传算法作为偏振模色散(PMD)补偿中的反馈控制算法进行全局最优化,使偏振度(DOP)实现最大化,实现PMD补偿。文章对遗传算法在二阶PMD补偿中的应用进行了理论分析,并且设计了以TMS320C6711DSK为核心硬件的整套控制结构。
毕辉, 李唐军, 刘向春, 王目光
doaj
Population genetic structure of Japanese anchovy (Engraulis japonicus) and Japanese Spanish mackerel (Scomberomorus niphonius) in China offshore [PDF]
鳀和蓝点马鲛是中国近海生态系统的关键种和重要的渔业经济种。目前我们对两个物种在中国近海的种群组成、基因流限制等种群遗传学属性的了解仍然不够清晰。因此,我们采集了覆盖鳀和蓝点马鲛在中国近海主要产卵场的产卵群体样品,选用微卫星为分子标记,对这个两个物种的种群遗传结构进行了进一步的分析,以期对其能有更好的理解。 首先使用“微卫星富集文库”法,分别开发了鳀和蓝点马鲛的微卫星标记。结果共获得鳀微卫星标记41个,其等位基因数的分布范围为6-36,平均为20.10;表观杂合度的分布范围为0.180-0.949 ...
林琳
core
ABSTRACT Objective To critically review the literature and synthesize evidence on the incremental yield of prenatal exome sequencing (PES) in fetuses with an apparently normal phenotype with a normal G‐banded karyotype or chromosomal microarray (CMA).
A. Sotiriadis +5 more
wiley +1 more source
大头鲤(Cyprinus pellegrini)是一种云南高原湖泊特有的国家Ⅱ级重点保护鱼类。土著种大头鲤与外来种鲤(C.carpio)的渐渗杂交在星云湖野生种群中已经广泛发生。本研究结合形态和微卫星及线粒体DNA分析检测了螺蛳铺大头鲤原种种群的遗传现状。结果显示,螺蛳铺大头鲤样本所有个体在形态上位于大头鲤与鲤的参照样本之间;在微卫星因子对应分析中也显示,其位于大头鲤与鲤的参照样本之间,但与大头鲤参照样本较为相似;在线粒体DNA分析中显示,都具有鲤的单倍型 ...
唐卫星, 陈毅峰
core
Genetic Structure Analysis of Y Chromosome STR and SNP in Population of Changshu [PDF]
Objective To provide a theoretical basis for building a Y chromosome database in specific regions by analyzing the pedigree specific core haplogroup and region specific genetic structure in Changshu.
TANG Xiao, TIAN Jun-zhe, ZHANG Yi-wei, et al
core +1 more source

