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Influence of morse Potential on DNA Dynamics

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Chinese Physics Letters 2006年第1期23卷 65-68页

作者： ZDRAvKOvIC S sataric m. v. Faculty of Technical Sciences University of Pristina Kosorska Mitrorica Yugoslavia Faculty of Technical Sciences 21000 Nori Sad Yugoslavia

Based on the Peyrard-Bishop-Dauxois （i.e. the extended Peyrard-Bishop） model of DNA dynamics, the transversal hydrogen interaction is modelled by morse potential and the impact of the morse parameters on the DNA dynamics is investigated. In particular, we show how modulation of the signal, m.ving through the DNA chain, depends on those parameters. It is also shown that the DNA dynamics represents the interplay between dispersion and nonlinearity. Finally, we discuss the values of coupling constants κ and K.

关键词： NONLINEAR HELICOIDAL mODEL vISCOSITY BREATHER ImPACT

Impact of viscosity on DNA Dynamics

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Chinese Physics Letters 2007年第5期24卷 1210-1213页

作者： S. ZDRAvKOvIC m. v. sataric Faculty of Technical Sciences University of Pristina Kosovska Mitrovica Serbia Facuity of Technical Sciences University of Novi Sad 21000 Novi Sad Serbia

We study the influence of viscosity on DNA dynamics. By employing the nonlinear Peyrard-Bishop-Dauxois （PBD） model, it is shown that the DNA dynamics can be explained by a solution of a complex nonlinear Schrǒdinger equation （CNLSE）. This is the nonlinear Schrǒdinger equation （NLSE） with a nonlinear parameter being a complex number. We compare real and imaginary parts of this nonlinear parameter and show that the latter one should not be negligible, which means that the CNLSE should be solved numerically,

关键词： BREATHER mODEL

Non-Canonical Functions of the E2F/DP Pathway with Emphasis in Plants

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Phyton-International Journal of Experimental Botany 2021年第2期90卷 307-330页

作者： víctor A.Sánchez-Camargo Samantha Romero-Rodríguez Jorge m.vázquez-Ramos Facultad de Química Departamento de BioquímicaUniversidad Nacional Autónoma de MéxicoAvenida Universidad y CopilcoCiudad de México04510México Plant Development and(Epi)Genetics Group Swammerdam Institute for Life SciencesUniversiteit van AmsterdamAmsterdam1098XHNetherlands

The E2F/DP pathway is a widely conserved regulatory mechanism in pluricellular *** family of E2F and DP transcription factors was originally described having a role in the transition from the G1 to the S phase of the cell ***,the discovery of hundreds of possible gene targets and their involvement in many other biochemical processes,soon showed that they participated in cell development and differentiation,chromatin remodeling,DNA repair and *** E2F/DP transcription factors can act as either activators or repressors of transcription depending on their association to other regulatory proteins,particularly the retinoblastoma protein,or even depending to their protein structure that can define their *** plants the E2F/DP pathway also regulates endoreduplication,a process present along the life cycle,from organ elongation to root differentiation and *** transcription factors also help plant cells to respond to environmental disturbances such as those caused by different types of radiation,or by *** review focuses on the“so called”non-canonical functions of the E2F/DP family proteins in animal and plant cells,that are in fact essential activities that connect regulatory circuits among multiple metabolic pathways by means of their atypical functions.

关键词： E2F DP transcription factors atypical functions plant cells

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非晶和纳米晶软磁丝状样品的环向磁化过程

物理学报 2005年第7期54卷 3391-3396页

作者：李印峰尹世忠 m.v zquez Instituto de Ciencia de materiales de madrid 邢台学院物理系邢台054054

采用阻抗法测定了不同磁结构的软磁丝状样品(非晶及纳米晶合金)的环向磁导率随环向磁场强度和频率的变化.按照Chen等的理论公式计算了样品的环向磁化曲线,结果发现,这一实验原理公式对具有较大损耗的磁化过程并不适用.因此,将其发展给... 详细信息

采用阻抗法测定了不同磁结构的软磁丝状样品(非晶及纳米晶合金)的环向磁导率随环向磁场强度和频率的变化.按照Chen等的理论公式计算了样品的环向磁化曲线,结果发现,这一实验原理公式对具有较大损耗的磁化过程并不适用.因此,将其发展给出了更一般情况下的理论公式.此外,通过分析复数磁导率对环向磁场的依赖关系,确定了两类不同畴结构样品的不同的环向矫顽力机理.研究了交流频率对磁化过程的影响.

关键词：磁化过程丝状样品环向软磁非晶纳米晶合金复数磁导率矫顽力机理磁化曲线公式计算磁场强度实验原理理论公式依赖关系磁结构阻抗法畴结构频率

Nonlinear magnetoimpedance Effect in FeCoNi Ferromagnetic Tubes

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Chinese Physics Letters 2001年第9期18卷 1268-1270页

作者： G.v.Kurlyandskaya H.Yakabchuk E.Kisker N.G.Bebenin H.García-miquel m.vázquez v.O.vas′kovskiy Dpto.de Eiectricidad y Electrica Universidad del Pa vasco UPv-EHU Apdo 64448080 BilbaoSpain Institut fiir Angewandte Physik Heinrich Heine Universitat DiisseldorfUniversitatstraβe 1Bld.25.33.01.24D-40225DiisseldorfGermany Institute of metal Physics UD RAS Kovalevskaya str.18GSP-170620219 EkaterinburgRussia Dpto.de Ing.Electronica Universidad Poiitecnica de ValenciaCamino de Veras/n46022 ValenciaSpain Instituto de Ciencia de materiaies CSICP.O.Box 15528230 Las Rozas(Madrid)Spain Institute of Physics and Applied mathematics Ural State UniversityLenin Ave.51620083 EkaterinburgRussia

The very high (up to 820% of the magnetoimpedance ratio) and sensitive nonlinear giant magnetoimpedance effect has been studied in the FeCo1Ni magnetic tubes electroplated onto Cu(3%)Be nonmagnetic wirefor frequencies from 1-10mHz. Special annealing was carried out in order to induce the magnetic anisotropy. The high harmonic generation was observed and the harmonics show larger variations with the external magnetic field than the fundamental frequency. The super high sensitivity of the harmonics is promising as regards the increase of the sensitivity of magnetoimpedance sensors.

关键词： harmonics magnetic impedance

maternal undernutrition and offspring sex determine birth-weight, postnatal development and meat characteristics in traditional swine breeds

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Journal of Animal Science and Biotechnology 2018年第3期9卷 674-688页

作者： m.vázquez-Gómez C.García-Contreras L.Torres-Rovira S.Astiz C.óvilo A.González-Bulnes B.Isabel Faculty of veterinary medicine UCMMadrid Spain INIA Madrid Spain

Background: The aim of this study was to determine how maternal undernutrition during pregnancy and offspring birth-weight can affect the postnatal development of offspring under farm conditions, which may lead to consequences in its meat and carcass quality. The current study involved a total of 80 litters from Iberian sows fed a diet fulfilling daily requirements(n = 47; control) or providing 70% daily requirements(n = 33; underfed) from d 38 to d 90 of gestation when fetal tissue development begins. After birth, piglets born live were classified as low birthweight(LBW; mal birth-weight(NBW; ≥1 kg). During the growing phase, 240 control and 230 underfed pigs(50% males and females) distributed by BW category and sex were studied until the ***: At birth and weaning, there were significant differences in all morphological measures and weight between NBW and LBW piglets as expected(P valuation(P ven though control-LBW-females and LBW-males showed a catch-up growth. However, underfed pigs showed slower growth and higher feed conversion ratio than control pigs(P moreover, the average daily weight gain(ADWG) for the overall period was greater for NBW, male and control pigs than for their LBW, female and underfed pigs(P vely) and NBW pigs were slaughtered at a younger age than LBW pigs(P maternal nutritional effect caused main changes in the polar lipid fraction of liver and loin. The fatty acid composition of loin in control pigs had higher C18:1 n-9 and n-3 FA concentrations, as well as lower ∑n-6/∑n-3 ratio, than in underfed pigs(P < 0.005).Conclusions: In brief, results showed

关键词： Carcass quality Fatty acids Feed restriction Growth Iberian pigs Low birth-weight malnutrition

Brain-derived neurotrophic factor signaling in the neuromuscular junction during developmental axonal competition and synapse elimination

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Neural Regeneration Research 2025年第2期20卷 394-401页

作者： Josep Tomàs víctor Cilleros-mañé Laia Just-Borràs marta Balanyà-Segura Aleksandra Polishchuk Laura Nadal marta Tomàs Carolina Silvera-Simón manel m.Santafé maria A.Lanuza Unitat d’Histologia i Neurobiologia(UHNeurob) Facultat de Medicina i Ciències de la SalutUniversitat Rovira i VirgiliReusSpain

During the development of the nervous system,there is an overproduction of neurons and *** competition between neighboring nerve endings and synapses performing different activity levels leads to their elimination or *** have extensively studied the involvement of the brain-derived neurotrophic factor-Tropomyosin-related kinase B receptor neurotrophic retrograde pathway,at the neuromuscular junction,in the axonal development and synapse elimination process versus the synapse *** purpose of this review is to describe the neurotrophic influence on developmental synapse elimination,in relation to other molecular pathways that we and others have found to regulate this *** particular,we summarize our published results based on transmitter release analysis and axonal counts to show the different involvement of the presynaptic acetylcholine muscarinic autoreceptors,coupled to downstream serine-threonine protein kinases A and C(PKA and PKC)and voltage-gated calcium channels,at different nerve endings in developmental *** dynamic changes that occur simultaneously in several nerve terminals and synapses converge across a postsynaptic site,influence each other,and require careful studies to individualize the mechanisms of specific *** describe an activity-dependent balance(related to the extent of transmitter release)between the presynaptic muscarinic subtypes and the neurotrophin-mediated TrkB/p75NTR pathways that can influence the timing and fate of the competitive interactions between the different axon *** downstream displacement of the PKA/PKC activity ratio to lower values,both in competing nerve terminals and at postsynaptic sites,plays a relevant role in controlling the elimination of supernumerary ***,calcium entry through L-and P/Q-subtypes of voltage-gated calcium channels(both channels are present,together with the N-type channel in developing nerve terminals)contributes to red

关键词： acetylcholine release adenosine receptors axonal competition brain-derived neurotrophic factor calcium channels motor end-plate muscarinic acetylcholine receptors postnatal synapse elimination serine kinases tropomyosin-related kinase receptorB

Comparative Study on EKF Training Algorithm with Em and mLE for ANN modeling of Nonlinear Systems

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Comparative Study on EKF Training Algorithm with EM and MLE ...

Particle Filter based Neural Network modeling of Nonlinear Systems for State Space Estimation

第二十九届中国控制会议

作者： m.v Rajesh Archana R A Unnikrishnan R Gopikakaumari Govt.model Engineering College Thrikkakara(PO) Federal Institute of Science&Technology Naval Physical&Oceanographic Laboratory (DRDO-Govt.of India) School of Engineering Cochin University of Science&TechnologyCUSAT(PO)

The system identification/modeling problem looks for a suitably parameterized model,representing a given *** parameters of the model are adjusted to optimize a performance function based on error between the given process output and identified process *** linear system identification field is well established with many classical approaches whereas most of those methods cannot be applied for nonlinear *** problem becomes tougher if the system is completely unknown with only the output time series is *** has been reported that the capability of Artificial Neural Network to approximate all linear and nonlinear input-output maps makes it predominantly suitable for the blind identification of nonlinear systems,where only the output time series is *** work reported here is an attempt for modeling certain nonlinear systems using recurrent neural networks,in which the network parameters are estimated using the Extended Kalman Filtering（EKF）and an extension of the same with EKF with Expectation maximization（Em）（to alleviate the problems encountered in Kalman filtering）.The paper also compares the performance of the neural network model implemented with maximum Likelihood Estimation（mLE）,An assessment on the model performances in terms of the mean square error（mSE） and computational complexity has also been done for these algorithms.

关键词： EKF mSE Em State Space modeling RNN

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Particle Filter based Neural Network Modeling of Nonlinear S...