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Conceptual comparis.n of metabolic pathways.with electronic circuits

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Journal of Bionic Engineering 2004年第3期1卷 175-182页

作者： s. Balaji s. Laks.minarayanan Lecturer-Bioinformatics School of Chemical and Biotechnology SASTRA Deemed UniversityThanjavur Tamilnadu IndiaM.Tech BioinformaticsSchool of Chemical and Biotechnology SASTRA Deemed UniversityThanjavur Tamilnadu India

An electronic circuit has.been des.gned to mimic glycolys.s. the Citric Acid (TCA) cycle and the electron trans.ort chain. Enzymes.play a vital role in metabolic pathways. s.milarly trans.s.ors.play a vital role in electronic circuits. the characteris.ics.of enzymes.in comparis.n with thos. of trans.s.ors.s.gges.s.that the properties.are analagous. Enzymes.pos.es. an active s.te into which the s.bs.rate binds. s.milarly the trans.s.or pos.es. a layer in which the recombination of holes.and electrons.takes.place. Hence the applied voltage in the circuit is.cons.dered as.the s.bs.rate. The enthalpy values.of the enzymes.are converted into volts. which is.to be applied to the circuit. ATP is.the energy s.urce in the metabolic pathway which functions.like a potential in the electronic circuit. s.me enzymes.can function only with the help of a cofactor; here modelled as.a s.itch. Us.ng all the above electronic circuit analogues. which pos.es. the s.milar characteris.ics.of the metabolic pathway cons.ituents. circuits.have been des.gned.

关键词： metabolic circuit molecular biomimetics enzyme trans.s.or

Temporary fluoride concentration changes.in groundwater in the context of impact as.es.ment in the Vaniyar s.b-bas.n, s.uth India

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Acta Geochimica 2017年第1期36卷 112-123页

作者： s. s.thees.kumar s. Venkates.aran R. Kannan Department of Geology Periyar University SalemTamil Nadu 636011 India

India＇s.s.rface water and groundwater dis.ribu- tion is.temporally variable due to the mons.on. Agriculture is.one of the dominant economic s.ctors.in India. Groundwater quality is.regularly as.es.ed to determine us.bility for drinking and irrigation. In this.s.udy, World Health Organization and Bureau of Indian s.andards.guidelines.were us.d to determine s.itability of ground- water near artificial recharge s.ructures.（ARs. with a focus.on the s.ructureg impact on groundwater quality. Ground- water res.urces.were evaluated for irrigation s.itability us.ng electrical conductivity （EC）, s.dium ads.rption ratio, the Us.s.linity Laboratory diagram, s.dium concentration, Wilcox＇s.diagram, Kelly＇s.index, and Doneen＇s.perme- ability index. EC and major ions.were tes.ed in recharge areas.at different dis.ances.from the ARs. The cons.ruction of ARs.at optimal dis.ances.along major s.reams.has.improved groundwater quantity and quality in the s.bbas.n. Before cons.ruction of ARs. fluoride concentrations.were higher; after cons.ruction, fluoride was.reduced in mos. locations. Water s.ored in the check dam and groundwater in the wells.clos.r to the s.ructure were s.itable for both drinking and irrigation purpos.s. Impact of ARs.on nearby groundwater quality was.obs.rved at Pal- lipatti, Mulayanur, Venkadas.muthram, Pudupatti, Poyyappatti, Harurl, and s.kkampatti. More dis.ant s.tes.included Pappiredipatti, Nambiyappati, Menas., Harur, Todampatti, and Adikarapatfi. Data demons.rated improved groundwater quality in the area of the ARs. Through recharge, the non-potable fluoride in the region is.reduced to the permis.ible limit for human cons.mption.

关键词： Drinking purpos.s s.linity Check dam Fluoride Dental fluoros.s

Phys.cochemical Properties.of Amino Acids.in Aqueous.Caffeine s.lution at 25, 30, 35 and 40℃

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Chines. Journal of Chemis.ry 2006年第11期24卷 1547-1553页

作者： ALI, A. s.BIR, s. s.AHJAHAN HYDER, s. Department of Chemis.ry Jamia Millia Islamia (Central University) New Delhi-11 0025 India

Dens.ty, vis.os.ty, and refractive index, for glycine, DL-alanine, L-s.rine and DL-valine have been determined in aqueous.s.lution of 0.05 mol/kg caffeine as.a function of amino acid （AA） concentration at 25, 30, 35, and 40 ℃ The dens.ty data have been us.d to compute apparent molar volume. The partial molar volume （limiting apparent molar volume） was.obtained by applying the Mas.on＇s.equation. The vis.os.ty data have been analyzed by means.of Jones.Dole equation. The values.of Falkenhagen coefficient and Jones.Dole coefficient thus.obtained are us.d to interpret the s.lute-s.lute and s.lute-s.lvent interactions. res.ectively. Hydration number was.als. computed. The trans.tion-s.ate theory was.applied to obtain the activation parameters.of vis.ous.flow, i.e., free energy of activation per mole of s.lvent, and s.lute. The enthalpy and entropy of activation of vis.ous.flow were computed for the s.s.em. Refractive index was.us.d to calculate molar refractivity of the mixtures. The res.lts.have been interpreted in the light of various.interactions.occurring between the components.of the mixtures.under applied experimental conditions.

关键词： amino acid caffeine Falkenhagen coefficient Jones.Dole coefficient molecular interactions

Phos.hate s.rption-Des.rption Characteris.ics.in Two Inceptis.ls.and an Alfis.l of Chattis.arh, India

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Pedos.here 2005年第5期15卷 611-619页

作者： A. K. DOLUI s. s. ROY Department of Agricultural Chemis.ry and s.il s.ience Institute of Agricultural Science Calcutta University 35 Bally-gunge Circular Road Kolkata 700 019 (India).Department of Agricultural Chemistry and Soil Science Institute of Agricultural Science Calcutta University 35 Bally-gunge Circular Road Kolkata 700 019 (India).

Two Inceptis.ls.and an Alfis.l of the Indravati Catchment area in Chattis.arh, India, compris.ng s.veral gradients.n phys.cal and chemical properties.were s.udied to relate phos.hate s.rption and des.rption to s.il properties. Fromthe P is.therm curve, the s.andard P requirement (s.R) of the s.ils.was.determined. Phos.hate s.rption data were als.fitted both to the Langmuir and Freundlich Equations. The mean s.rption maximum values.for three different s.il s.ries.ere: Bas.ar > Geedam > Mos.di. The fraction of added phos.hate s.rbed for the 3 s.ries.followed this.s.me trend as.id s.R; the phos.hate s.rption maximum and the maximum phos.hate buffering capacity, which were es.imated by theLangmuir is.therm; and the Freundlich cons.ant 1/n. However, phos.hate des.rption, as.well as.the maximum recoverypercent did not follow this.order. The phos.hate affinity cons.ant (K) was.als. different following the s.me progres.ionfor the 3 s.il s.ries.as.the Freundlich cons.ant K’, which meas.red s.rption s.rength. Meanwhile, an invers. order exis.edfor K and K’ vers.s.the percent des.rbed relative to the s.rbed as.well as.the maximum recovery percent. In addition,s.gnificant correlation coefficients.among s.rption parameters.of P and s.il factors.were found.

关键词： Alfis.ls Inceptis.ls phos.hate s.rption-des.rption

An extended thermo-mechanically coupled algorithm for s.mulation of s.perelas.icity and s.ape memory effect in s.ape memory alloys

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Frontiers.of s.ructural and Civil Engineering 2015年第4期9卷 466-477页

作者： s. HAs.EMI H. AHMADIAN s. MOHAMMADI High Performance Computing Laboratory (HPC Lab) School of Civil Engineering University of Tehran Tehran *** lran

Thermo-mechanical coupling in s.ape memory alloys.is.a very complicated phenomenon. The heat generation/abs.rption during forward/revers. trans.ormation can lead to temperature-dependent variation of its.mechanical behavior in the forms.of s.perelas.icity and s.ape memory effect. However, unlike the us.al as.umption, s.ow loading rate cannot guarantee an is.thermal proces.. A two-dimens.onal thermo-mechanically coupled algorithm is.propos.d bas.d on the original model of Lagoudas.to efficiently model both s.perelas.icity and s.ape memory effects.and the influence of various.s.rain rates. as.ect ratios.and boundary conditions. To implement the coupled model into a finite element code, a numerical s.aggered algorithm is.employed. A number of s.mulations.are performed to verify the propos.d approach with available experimental and numerical data and to as.es. its.efficiency in s.lving complex s.A problems.

关键词： s.ape memory alloy thermo-mechanical coupling s.perplas.icity s.ape memory effect

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Nature's.s.blime

Nature's sublime

A Numerical s.udy on the As.mmetric Water Entry of A Wedge s.ction

作者： Corrington Robert s.

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海洋工程：英文版 2004年第4期18卷 595-604页

作者： M. s. s.if s. M. Mous.viraad s. H. s.ddathos.eini Department of Mechanical Engineering Sharif University of Technology Tehran Iran Department of Mechanical Engineering Sharif University of Technology Tehran Iran Department of Mechanical Engineering Sharif University of Technology Tehran Iran

The effect of the as.mmetric water entry over a s.bmerged part of a s.ip on the hydrodynamic impact is.inves.igated numerically. A wedge body is.cons.dered and the problem is.as.umed to be two-dimens.onal. The res.lts.of s.mmetric and as.mmetric impacts.are compared. The effect is.found s.gnificant in the numerical s.mulation. The maximum hydrodynamic pres.ure at a heel angle of 10 degrees.becomes.about 95% more than that of the s.mmetric entry. The res.lt of the pres.nt work proves.the importance of as.mmetrical hydrodynamic impact loading for s.ructural des.gn of a s.ip. Bes.des. the numerical procedure is.not limited to a wedge type cros. s.ction and it is.pos.ible to apply it for any real geometry of s.ips.and high-s.eed craft.

关键词： as.mmetric water entry hydrodynamic impact

A modified neural learning algorithm for online res.s.ance es.imation in vector controlled induction drives. rotor motor

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Frontiers.in Energy 2015年第1期9卷 22-30页

作者： A. CHITRA s. HIMAVATHI s.hool of Electrical Engineering Vellore Institute of TechnologyUniversity Katpadi Vellore 632014 India Department of Electrical and Electronics.Engineering PondicherryEngineering College Pudhucherry 605014 India

Online es.imation of rotor res.s.ance is.es.en- tial for high performance vector controlled drives. In this.paper, a novel modified neural algorithm has.been identified for the online es.imation of rotor res.s.ance. Neural bas.d es.imators.are now receiving active con- s.deration as.they have a number of advantages.over conventional techniques. The training algorithm of the neural network determines.its.learning s.eed, s.ability, weight convergence, accuracy of es.imation, s.eed of tracking and eas. of implementation. In this.paper, the neural es.imator has.been s.udied with conventional and propos.d learning algorithms. The s.ns.tivity of the rotor res.s.ance change has.been tes.ed for a wide range of variation from -50% to ＋50% on the s.ability of the drive s.s.em with and without es.imator. It is.quiet appealing to s.ttle with optimal es.imation time and error for the viable realization. The s.udy is.conducted extens.vely for es.imation and tracking. The propos.d learning algorithm is.found to exhibit good es.imation and tracking capabilities. Bes.des. it reduces.computational complexity and, hence, more feas.ble for practical digital implementa- tion.

关键词： neural networks back propagation (BP) rotorres.s.ance es.imators vector control induction motor

Triangle s.ngularity enhancing is.s.in violation in B^0_s. J/ψπ~0f_0(980)

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Chines. Phys.cs.C 2018年第4期42卷 157-165页

作者： Wei-Hong Liang s. s.kai Ju-Jun Xie E. Os.t Department of Phys.cs Guangxi Normal University Guilin 541004 China Departamento de Fís.ca Teórica and IFIC Centro Mixto Universidad de Valencia-CSIC Institutos de Investigación de Paterna Aptdo. 22085 46071 Valencia Spain Ins.itute of Modern Phys.cs Chinese Academy of Sciences Lanzhou 730000 China

We perform calculations.for the Bs.→ J/ψπ0f0（980） and Bs. → J/ψπ0a0（980） reactions. s.owing that the firs. is.is.s.in-s.ppres.ed while the s.cond is.is.s.in-allowed. The reaction proceeds.via a triangle mechanis., with Bs. →J/ψK＊ K ＋c.c., followed by the decay K＊ →Kπ and a further fus.on of KK into the f0（980） or a0（980）. We s.ow that the mechanis. develops.a s.ngularity around the π0 f0（980） or π0a0（980） invariant mas. of 1420 MeV, where the π0f0 and π0a0 decay modes.are magnified and als. the ratio of π0f0 to π0a0 production. Us.ng experimental information for the Bs. → J/ψK＊K ＋c.c. decay, we are able to obtain abs.lute values.for the reactions.s.udied which fall into the experimentally acces.ible range. The reactions.propos.d and the obs.rvables.evaluated, when contras.ed with actual experiments. s.ould be very valuable to obtain information on the nature of the low lying s.alar mes.ns.

关键词： triangle s.ngularity light s.alar mes.n is.s.in violation bottom mes.n decay