arXiv: Biological Physics最新文献

筛选
英文 中文
A phenomenological operator description of interactions between populations with applications to migration 种群间相互作用的现象学算子描述,应用于迁移
arXiv: Biological Physics Pub Date : 2012-07-12 DOI: 10.1142/S0218202512500534
F. Bagarello, F. Oliveri
{"title":"A phenomenological operator description of interactions between populations with applications to migration","authors":"F. Bagarello, F. Oliveri","doi":"10.1142/S0218202512500534","DOIUrl":"https://doi.org/10.1142/S0218202512500534","url":null,"abstract":"We adopt an operatorial method based on the so-called creation, annihilation and number operators in the description of different systems in which two populations interact and move in a two-dimensional region. In particular, we discuss diffusion processes modeled by a quadratic hamiltonian. This general procedure will be adopted, in particular, in the description of migration phenomena. With respect to our previous analogous results, we use here fermionic operators since they automatically implement an upper bound for the population densities.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"6 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123902721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 46
MOLECULAR BIOLOGY AT THE QUANTUM LEVEL: CAN MODERN DENSITY FUNCTIONAL THEORY FORGE THE PATH? 量子水平的分子生物学:现代密度泛函理论能开辟道路吗?
arXiv: Biological Physics Pub Date : 2012-07-04 DOI: 10.1142/S1793984412300063
B. Kolb, T. Thonhauser
{"title":"MOLECULAR BIOLOGY AT THE QUANTUM LEVEL: CAN MODERN DENSITY FUNCTIONAL THEORY FORGE THE PATH?","authors":"B. Kolb, T. Thonhauser","doi":"10.1142/S1793984412300063","DOIUrl":"https://doi.org/10.1142/S1793984412300063","url":null,"abstract":"Recent years have seen vast improvements in the ability of rigorous quantum-mechanical methods to treat systems of interest to molecular biology. In this review article, we survey common computational methods used to study such large, weakly bound systems, starting from classical simulations and reaching to quantum chemistry and density functional theory. We sketch their underlying frameworks and investigate their strengths and weaknesses when applied to potentially large biomolecules. In particular, density functional theory — a framework that can treat thousands of atoms on firm theoretical ground — can now accurately describe systems dominated by weak van der Waals interactions. This newfound ability has rekindled interest in using this tried-and-true approach to investigate biological systems of real importance. In this review, we focus on some new methods within the density functional theory that allow for accurate inclusion of the weak interactions that dominate binding in biological macromolecules. Recent work utilizing these methods to study biologically relevant systems will be highlighted, and a vision for the future of density functional theory within molecular biology will be discussed.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125837162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Single‐Molecule Pulling: Phenomenology and Interpretation 单分子拉力:现象学和解释
arXiv: Biological Physics Pub Date : 2012-05-22 DOI: 10.1002/9781118482568.ch14
I. Franco, M. Ratner, G. Schatz
{"title":"Single‐Molecule Pulling: Phenomenology and Interpretation","authors":"I. Franco, M. Ratner, G. Schatz","doi":"10.1002/9781118482568.ch14","DOIUrl":"https://doi.org/10.1002/9781118482568.ch14","url":null,"abstract":"Single-molecule pulling techniques have emerged as versatile tools for probing the noncovalent forces holding together the secondary and tertiary structure of macromolecules. They also constitute a way to study at the single-molecule level processes that are familiar from our macroscopic thermodynamic experience. In this Chapter, we summarize the essential phenomenology that is typically observed during single-molecule pulling, provide a general statistical mechanical framework for the interpretation of the equilibrium force spectroscopy and illustrate how to simulate single-molecule pulling experiments using molecular dynamics. Published in Nano and Cell Mechanics: Fundamentals and Frontiers, edited by H.D. Espinosa and G. Bao (Wiley, Microsystem and Nanotechnology Series, 2013), Chap. 14, pages 359–388.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124492295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Permeability of phospholipid membrane for small polar molecules determined from osmotic swelling of giant phospholipid vesicles 磷脂膜对小极性分子的渗透性由巨大磷脂囊泡的渗透性膨胀测定
arXiv: Biological Physics Pub Date : 2012-05-18 DOI: 10.1016/B978-0-12-396534-9.00010-6
P. Peterlin, V. Arrigler, H. Diamant, E. Haleva
{"title":"Permeability of phospholipid membrane for small polar molecules determined from osmotic swelling of giant phospholipid vesicles","authors":"P. Peterlin, V. Arrigler, H. Diamant, E. Haleva","doi":"10.1016/B978-0-12-396534-9.00010-6","DOIUrl":"https://doi.org/10.1016/B978-0-12-396534-9.00010-6","url":null,"abstract":"","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133208105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
A Mathematical Model for Estimating Biological Damage Caused by Radiation 辐射生物损伤估计的数学模型
arXiv: Biological Physics Pub Date : 2012-04-11 DOI: 10.1143/JPSJ.81.104004
Y. Manabe, K. Ichikawa, M. Bandō
{"title":"A Mathematical Model for Estimating Biological Damage Caused by Radiation","authors":"Y. Manabe, K. Ichikawa, M. Bandō","doi":"10.1143/JPSJ.81.104004","DOIUrl":"https://doi.org/10.1143/JPSJ.81.104004","url":null,"abstract":"We propose a mathematical model for estimating biological damage caused by low-dose irradiation. We understand that the Linear Non Threshold (LNT) hypothesis is realized only in the case of no recovery effects. In order to treat the realistic living objects, our model takes into account various types of recovery as well as proliferation mechanism, which may change the resultant damage, especially for the case of lower dose rate irradiation. It turns out that the lower the radiation dose rate, the safer the irradiated system of living object (which is called symbolically \"tissue\" hereafter) can have chances to survive, which can reproduce the so-called dose and dose-rate effectiveness factor (DDREF).","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123362682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Modeling the interactions of biomatter and biofluid 模拟生物物质和生物流体的相互作用
arXiv: Biological Physics Pub Date : 2012-01-01 DOI: 10.1142/S2010194512005193
A. Sulaiman, Badan Pengkajian, Dan Penerapan Teknologi, Bld Bppt, Jl M H Ii, Thamrin, L. T. Handoko
{"title":"Modeling the interactions of biomatter and biofluid","authors":"A. Sulaiman, Badan Pengkajian, Dan Penerapan Teknologi, Bld Bppt, Jl M H Ii, Thamrin, L. T. Handoko","doi":"10.1142/S2010194512005193","DOIUrl":"https://doi.org/10.1142/S2010194512005193","url":null,"abstract":"The internal motions of biomatter immersed in biofluid are investigated. The interactions between the fragments of biomatter and its surrounding biofluid are modeled using field theory. In the model, the biomatter is coupled to the gauge field representing the biofluid. It is shown that at non-relativistic limit various equation of motions, from the well-known Sine-Gordon equation to the simultaneous nonlinear equations, can be reproduced within a single framework.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"45 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
NONLINEAR CONFORMATION OF SECONDARY PROTEIN FOLDING 二级蛋白质折叠的非线性构象
arXiv: Biological Physics Pub Date : 2012-01-01 DOI: 10.1142/S2010194512005181
M. Januar, A. Sulaiman, L. T. Handoko
{"title":"NONLINEAR CONFORMATION OF SECONDARY PROTEIN FOLDING","authors":"M. Januar, A. Sulaiman, L. T. Handoko","doi":"10.1142/S2010194512005181","DOIUrl":"https://doi.org/10.1142/S2010194512005181","url":null,"abstract":"A model to describe the mechanism of conformational dynamics in secondary protein based on matter interactions is proposed. The approach deploys the lagrangian method by imposing certain symmetry breaking. The protein backbone is initially assumed to be nonlinear and represented by the Sine-Gordon equation, while the nonlinear external bosonic sources is represented by ϕ4 interaction. It is argued that the nonlinear source induces the folding pathway in a different way than the previous work with initially linear backbone. Also, the nonlinearity of protein backbone decreases the folding speed.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128094181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
DYNAMICAL ASPECTS OF KINOUCHI-COPELLI MODEL: EMERGENCE OF AVALANCHES AT CRITICALITY kinouchi-copelli模型的动力学方面:临界雪崩的出现
arXiv: Biological Physics Pub Date : 2011-12-27 DOI: 10.5540/DINCON.2011.001.1.0064
T. Mosqueiro, C. Akimushkin, L. Maia
{"title":"DYNAMICAL ASPECTS OF KINOUCHI-COPELLI MODEL: EMERGENCE OF AVALANCHES AT CRITICALITY","authors":"T. Mosqueiro, C. Akimushkin, L. Maia","doi":"10.5540/DINCON.2011.001.1.0064","DOIUrl":"https://doi.org/10.5540/DINCON.2011.001.1.0064","url":null,"abstract":"We analyze the behavior of bursts of neural activity in the Kinouchi-Copelli model, originally conceived to explain information processing issues in sensory systems. We show that, at a critical condition, power-law behavior emerges for the size and duration of the bursts (avalanches), with exponents experimentally observed in real biological systems.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122480447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Foundations of the Theory of Evolution 论进化论的基础
arXiv: Biological Physics Pub Date : 2011-12-01 DOI: 10.1142/9789814383080_0013
Diederik Aerts, Stan Bundervoet, M. Czachor, Bart D'Hooghe, L. Gabora, Philippe Polk, S. Sozzo
{"title":"On the Foundations of the Theory of Evolution","authors":"Diederik Aerts, Stan Bundervoet, M. Czachor, Bart D'Hooghe, L. Gabora, Philippe Polk, S. Sozzo","doi":"10.1142/9789814383080_0013","DOIUrl":"https://doi.org/10.1142/9789814383080_0013","url":null,"abstract":"Darwinism conceives evolution as a consequence of random variation and natural selection, hence it is based on a materialistic, i.e. matter-based, view of science inspired by classical physics. But matter in itself is considered a very complex notion in modern physics. More specifically, at a microscopic level, matter and energy are no longer retained within their simple form, and quantum mechanical models are proposed wherein potential form is considered in addition to actual form. In this paper we propose an alternative to standard Neodarwinian evolution theory. We suggest that the starting point of evolution theory cannot be limited to actual variation whereupon is selected, but to variation in the potential of entities according to the context. We therefore develop a formalism, referred to as Context driven Actualization of Potential (CAP), which handles potentiality and describes the evolution of entities as an actualization of potential through a reiterated interaction with the context. As in quantum mechanics, lack of knowledge of the entity, its context, or the interaction between context and entity leads to different forms of indeterminism in relation to the state of the entity. This indeterminism generates a non-Kolmogorovian distribution of probabilities that is different from the classical distribution of chance described by Darwinian evolution theory, which stems from a 'actuality focused', i.e. materialistic, view of nature. We also present a quantum evolution game that highlights the main differences arising from our new perspective and shows that it is more fundamental to consider evolution in general, and biological evolution in specific, as a process of actualization of potential induced by context, for which its material reduction is only a special case.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"344 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127124644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
Fundamental Complexity Measures of Life 生命的基本复杂性度量
arXiv: Biological Physics Pub Date : 2011-11-16 DOI: 10.1142/9789812834355_0028
A. Grandpierre
{"title":"Fundamental Complexity Measures of Life","authors":"A. Grandpierre","doi":"10.1142/9789812834355_0028","DOIUrl":"https://doi.org/10.1142/9789812834355_0028","url":null,"abstract":"At present, there is a great deal of confusion regarding complexity and its measures (reviews on complexity measures are found in, e.g. Lloyd, 2001 and Shalizi, 2006 and more references therein). Moreover, there is also confusion regarding the nature of life. In this situation, it seems the task of determining the fundamental complexity measures of life is especially difficult. Yet this task is just part of a greater task: obtaining substantial insights into the nature of biological evolution. We think that without a firm quantitative basis characterizing the most fundamental aspects of life, it is impossible to overcome the confusion so as to clarify the nature of biological evolution. The approach we present here offers such quantitative measures of complexity characterizing biological organization and, as we will see, evolution.","PeriodicalId":360136,"journal":{"name":"arXiv: Biological Physics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131683689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信