搜索结果: 16-30 共查到“知识库 生物数学”相关记录100条 . 查询时间(1.656 秒)
A fused lasso latent feature model for analyzing multi-sample aCGH data
Cancer DNA copy number False discovery rate Mutation
2015/8/21
Array-based comparative genomic hybridization (aCGH) enables the measurement of DNA copy number across thousands of locations in a genome. The main goals of analyzing aCGH data are to identify the reg...
Variability of 21 apricot (Prunus armeniaca L.) cultivars and hybrids in selected traits of fruit and stone
apricot genotypes fruit and stone weight
2015/1/20
Weight, height, width and diameter of fruits and stones were evaluated in 21 apricot cultivars and hybrids in 1994–1997. Statistically significant differences between the measured values of traits con...
Each biological cell is surrounded by a membrane that consists of many different kinds of lipids. The lipids are mainly composed of phospholipids, which form a fluid bilayer that serves as the platfor...
The Evolutionary Genetics of Seed Shattering and Flowering Time, Two Weed Adaptive Traits in US Weedy Rice
Oryza Parallel Evolution Weeds
2015/1/5
Weedy rice is a persistent weed of cultivated rice (Oryza sativa) fields worldwide, which competes with the crop and drastically reduces yields. Within the US, two main populations of genetically diff...
含苯并噻唑基双酰胺衍生物的合成与生物活性
双酰胺 苯并噻唑 生物活性 合成
2014/1/9
以2,4-二氯苯甲酸为起始原料,设计并合成13个含苯并噻唑胺基双酰胺类化合物,其结构经1H NMR,13C NMR,IR及元素分析确证.初步生物活性测试结果表明,部分化合物有一定的抗植物病毒活性.
湘西北武陵山区毛竹叶总黄酮含量的比较
湘西北武陵山区 毛竹叶 总黄酮
2014/1/9
用乙醇超声波辅助提取法提取毛竹叶总黄酮，并以芦丁为对照，用紫外分光光度计法测定了湘西北5个县市、区（吉首市、古丈县、龙山县、花垣县、永定区）毛竹叶总黄酮质量分数.花垣县毛竹叶黄酮最高为3.49%，龙山县最低1.32%，吉首市、古丈县、永定区的分别为2.54%，3.04%，1.86%.湘西北武陵山区毛竹叶总黄酮含量存在较大的差异，花垣县的毛竹叶开发价值大.
Dyadic groups, dyadic trees and symmetries in long nucleotide sequences
genetic code alphabet dyadic group dyadic shift hypercomplex numbers dual numbers bicomplex numbers
2012/5/2
The conception of multi-alphabetical genetics is considered. Matrix forms of the representation of the multi-level system of molecular-genetic alphabets have discovered algebraic properties of this sy...
Quantifying Limits to Detection of Early Warning for Critical Transitions
early warning signals tipping point alternative stable states likelihood methods
2012/5/2
Catastrophic regime shifts in complex natural systems may be averted through advanced detection. Recent work has provided a proof-of-principle that many systems approaching a catastrophic transition m...
Identifying edge clusters in networks via edge graphlet degree vectors (edge-GDVs) and edge-GDV-similarities
Identifying edge clusters networks edge graphlet degree vectors (edge-GDVs) edge-GDV-similarities
2012/4/28
Inference of new biological knowledge, e.g., prediction of protein function, from protein-protein interaction (PPI) networks has received attention in the post-genomic era. A popular strategy has been...
Attribute Exploration of Gene Regulatory Processes
Attribute Exploration Gene Regulatory Processes Molecular Networks
2012/4/28
This thesis aims at the logical analysis of discrete processes, in particular of such generated by gene regulatory networks. States, transitions and operators from temporal logics are expressed in the...
本文应用反频次比较法在福建邵武市11块毛竹Phyllostachys heterocycla cv. pubescens林样地上调查浙江双栉蝠蛾Bipectilus zhejiangensis幼虫的空间分布格局及该虫的发生与生态环境的关系。调查结果表明： 以每株毛竹笋为单位， 通过正频次比较法分析， 浙江双栉蝠蛾幼虫在总计抽样的550株竹笋上的分布符合负二项分布。以样地为单位， 经过反频次比较法分...
Numerical analysis of a reinforcement learning model with the dynamic aspiration level in the iterated Prisoner's Dilemma
Numerical analysis reinforcement learning model
2011/1/5
Humans and other animals can adapt their social behavior in response to environmental cues including the feedback obtained through experience. Nevertheless, the effects of the experience-based learnin...
An algebraic analysis of the two state Markov model on tripod trees
algebraic analysis Markov model tripod trees
2011/1/5
Methods of phylogenetic inference use more and more complex models to generate trees from data. However, even simple models and their implications are not fully understood. Here, we investigate the tw...
TT2NE: A novel algorithm to predict RNA secondary structures with pseudoknots
algorithm predict RNA secondary structures
2010/11/15
We present TT2NE, a new algorithm to predict RNA secondary structures with pseudoknots. The method is based on a classification of RNA structures according to their topological genus. TT2NE guarantee...
Finding complex balanced and detailed balanced realizations of chemical reaction networks
Finding complex balanced detailed balanced realizations chemical reaction networks
2010/11/15
Reversibility, weak reversibility and deficiency, detailed and complex balancing are generally not "encoded" in the kinetic differential equations but they are realization properties that may imply lo...