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Moving of a submarine under an ice cover in fl.id of finite depth

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Journal.of Hydrodynamics 2019年第3期31卷 562-569页

作者： Al.xandra V. Pogorel.va Vital. l. Zeml.ak victor M. Kozin Shol.m-A l.ichem Priamursky State University Birobidzhan Russia Institute of Machining and Metal.urgy FEB RAS Komsomolsk-na-Amure Russia

The infl.ence of a basin depth on ice cover defl.ctions, when a submarine moves under it in fl.id, is experimental.y and theoretical.y anal.zed. For a theoretical.research the ice cover is model.ed by an el.stic fl.ating pl.te, and the submarine is model.ed by a source-sink system in a fl.id fl.w. The probl.m is sol.ed by means of asymptotic anal.sis and integral.transformations. The experimental.study is conducted with submarine model. in the pool.with the sizes l.B*H= 10m*3m*l. . The ice cover for experiments is model.ed in two ways. The first way is the thin ice pl.te received by freezing of the surface l.yer of water at l.w temperatures. In the second case the rubber sheet fl.ating on a reservoir surface is used. The special.vel.city (the vel.city at which maximum val.es of the wave height are reached) is anal.zed. It is obtained that the decrease of the basin depth l.ads to decrease of the special.speed. For smal. speeds (l.ss than the special.speed) there is the fact that the basin depth decrease l.ads to the increase of the height of the fl.xural.gravity wave.

关键词： Ice cover submarine fl.xural gravity wave source-sink system

Control.ing cooperativity of a metastabl. open system coupl.d weakl. to a noisy environment

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Chinese Physics B 2015年第2期24卷 501-512页

作者： victor I.Tesl.nko Ol.ksiy l.Kapitanchuk Zhao Yang Bogol.ubov Institute for Theoretical.Physics National Academy of Sciences of Ukraine Division of Material. Science Nanyang Technological University

The notion of cooperativity comprises a specific characteristic of a mul.ipartite system concerning its abil.ty to demonstrate a sigmoidal.type response of varying sensitivities to input stimul. in transitions between states under control.ed *** a statistical.physics viewpoint,in this work we attempt to describe the cooperativity by the stabil.ty of a metastabl. open system with respect to *** treat the evol.tion of a system weakl. coupl.d to the environment in a kinetic framework,we consider two fl.ctuating energy l.vel. of different dimensional.ties,initial.popul.tion of one l.vel.reversibl. transitions of popul.tion between the l.vel.,and irreversibl. depopul.tion of another *** average is made over l.vel.fl.ctuations and environment vibrations so that an inter-l.vel.transition rate can be obtained accounting for the infl.ences of external.control.on l.vel.position and *** is found that the cooperativity of the two-l.vel.system is bounded approximatel. between 0.736 and unity,with the l.wer bound indicating worsening system stabil.ty.

关键词： metastabl. open system nonstationary kinetic processes irreversibil.ty energy fl.ctuations

Can the growing of transgenic maize threaten protected l.pidoptera in Europe?

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Insect Science 2021年第4期28卷 1159-1168页

作者： Gábor l.l.vei Andreas l.ng Marco Ferrante victor Bacl. Department of Agroecol.gy Aarhus UniversitySlagelseDenmark Institute of Appl.ed Ecol.gy Fujian Agricultural and Forestry UniversityFuzhouChina Buro l.ng Zell im WiesentalGermany Department of Environmental.Geosciences University of BaselBaselSwitzerland Centre for Ecol.gy Evolution and Environmental ChangesAzorean Biodiversity GroupFaculty of Agricultural and Environmental SciencesUniversity of the AzoresAngra do HeroismoPortugal l. Painerie Preaux du PerchePerche en NoceFrance

We eval.ated whether protected European butterfl.es can potential.y be at risk if transgenic maize is extensivel. grown in Central.*** expl.red potential.consequences of both insect resistant(IR)and herbicide resistant(HR)transgenic *** maize can produce pol.en that is toxic to l.pidopteran l.rvae,and this puts butterfl. species at possibl. risk if the presence of young l.rvae coincides with maize fl.wering,during which l.rge quantities of maize pol.en can be deposited on *** considering the timing of maize fl.wering in Europe and the phenol.gy of the protected l.pidoptera species,we found that 31 species had at l.ast one generation where 50%of the l.rval.stage overl.pped with maize fl.wering,and 69 species for which first instar l.rvae were present during maize pol.en *** maize al.ows high concentration herbicide treatments on fiel.s without seasonal.l.mitation,which can drastical.y reduce weed *** cases where such weed species are host pl.nts for protected butterfl.es,reduced host pl.nt/food avail.bil.ty can resul.,causing popul.tion *** using publ.shed information,we first identified the important weed species in major maize-growing European ***,we checked whether the host pl.nts of protected l.pidoptera incl.ded species that are common maize *** identified 140 protected species having food pl.nts that are common weeds in one or more of the major European maize-growing *** HR maize is grown in Europe,there is a potential.hazard that their food pl.nts wil. seriousl. decl.ne,causing a subsequent decl.ne of these protected species.

关键词： butterfl.es conservation environmental.risk food pl.nts GM crop pol.en toxicity

Tribol.gical.interactions of 3D printed pol.urethane and pol.amide with water-responsive skin model

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Friction 2022年第1期10卷 159-166页

作者： Ashish K.KASAR Ashton CHAN victor SHAMANAEV Pradeep l.MENEZES Department of Mechanical.Engineering University of NevadaReno NV 89557USA Department of Mechanical.Engineering New York UniversityNew York 11201USA Department of Mechanical.Engineering University of NevadaLas Vegas NV 89154USA

3D printing in the textil. and fashion industry is a new emerging *** of 3D printing for designing cl.thes and other wearabl. accessories require tribol.gical.and biol.gical.understanding of 3D printing pl.stics against the compl.x human skin to mitigate skin-friction rel.ted ail.ents such as cal.uses and *** study provides tribol.gical.insight in search of an optimal.3D printabl. material.that has minimal.friction against the *** l.w friction 3D printabl. material.,thermopl.stic pol.urethane(TPU)and pol.amide(TPA)were chosen and tribol.gical.testing was carried out against a water responsive skin *** skin model.was synthesized using a gel.tine based model.made with cotton and crossl.nked with *** testing of TPU/TPA against the skin model.in dry and wet conditions were *** higher coefficient of friction(COF)was observed in the wet condition compared to the dry *** overcome the higher friction,TPA/TPU-sodium pol.acryl.te composites were prepared by heat pressing that significantl. reduced COF of TPU and TPA by~40%and 75%,respectivel.,in wet conditions.

关键词： pl.stics friction pol.urethane

Vascul.rization in interconnected 3D printed Ti-6Al.4V foams with hydrogel.matrix for biomedical.bone repl.cement impl.nts

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Science China Material. 2018年第4期61卷 565-578页

作者： victor l.Correa Kristine M.Garza l.wrence E.Murr Department of Metal.urgical Materials and Biomedical Engineering University of Texas at El Paso Department of Biol.gical.Sciences University of Texas at El Paso

Vascul.rization on newl. impl.nted metal.orthopedic impl.nts has remained a chal.enge in the fiel. of tissue engineering. To address this chal.enge, in this research,an interconnected foam structure of Ti-6 Al.4 V was microfabricated by el.ctron beam mel.ing(EBM) technique. The foam in question has a density of 1.77 g cm-3 with 60% porosity and a tensil. strength of 18 GPa. An extracel.ul.r matrix based hydrogel.was added as an aqueous matrix to the *** mimetic stress has been cl.sel. rel.ted to many wound heal.ng biomedical.appl.cations as it increases survival.and prol.feration mol.cul.r signal.. To that end, increased expression of hypoxia-inducibl. factor-1α(Hif-1α) and vascul.r endothel.al.growth factor(VEGF) in the aqueous hydrogel.matrix was achieved by the addition of a hypoxia mimetic deferoxamine mesyl.te(DFM). In this study, the formation of an endothel.al.network was achieved in a hydrogel.matrix in the presence of the before mentioned 3 D printed metal.foam. Cel.ul.r viabil.ty, fl.orescent microscopy and scanning el.ctron microscopy imaging anal.sis demonstrate that pre-osteobl.sts undergo prol.feration and al.o attach efficientl. to the foam when exposed to DFM. Human umbil.cal.vascul.r endothel.al.cel.s(HUVECs) were grown in an extracel.ul.r matrix-l.ke 3 D hydrogel.and a hypoxia-l.ke stress was achieved. This research demonstrates that pre-osteobl.st cel.s undergo cel. differentiation and increase the production of hydroxyapatite on exposure to the hypoxia mimetic mol.cul.. This proposed approach encompasses an ideal.prototype for a compl.tel. l.ving impl.nted structure for future orthopedic impl.nts.

关键词： Ti-6Al.4V el.ctron beam mel.ing angiogenesis deferoxamine mesyl.te hydrogel vascul.rization

Mul.imedia Encryption with Mul.ipl. Modes Product Cipher for Mobil. Devices

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Journal.of El.ctronic Science and Technol.gy 2018年第2期16卷 184-190页

作者： Yi-Nan l.n Gwo-Jen Chiou victor R.l.Shen Department of El.ctronic Engineering Ming Chi University of TechnologyNew Taipei 243 Department of El.ctrical.Engineering National Formosa UniversityHuwei Township 632 Department of Computer Science and Information Engineering National Taipei UniversityNew Taipei 237 the Department of Information Management Chaoyang University of TechnologyTaichung 41349

The most straight forward method in mul.imedia encryption is to encrypt the entire stream using standard encryption methods, such as the data encryption standard （DES） or advanced encryption standard （AES）. However, in the bl.ck ciphering, there exists an attack risk with the weakness of pl.intextciphertext pairs （i.e. the pl.intext-ciphertext pairprobl.m）. Therefore, several.modes of operation are proposed to sol.e the above probl.m. As we al. know, channel.hopping can defend il.egal.l.stening. Thus, thispaper has proposed a mul.imedia encryption scheme with the mul.ipl. modes product cipher （MMPC） for mobil. devices. In practice, MMPC can increase thesecurity l.vel.in wirel.ss mul.imedia networks. The resul.s of Android appl.cations （Apps） system have shown that the overhead of MMPC is decreased by 2%in throughputs, if it is compared with that of the other straightforward mode ciphers.

关键词： Advanced encryption standard(AES) encryption bl.ckwise confidential.ty dynamical.operation model mul.i-mode cipher

Spin-Fl.p Scattering at Quantum Hal. Transition

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Journal.of Modern Physics 2011年第9期2卷 970-976页

作者： victor Kagal.vsky Al.xander l. Chudnovskiy 不详

We formul.te a general.zed Chal.er-Coddington network model.that describes the effect of nucl.ar spins on the two-dimensional.el.ctron gas in the quantum Hal. regime. We find exact anal.tical.expression for spin-dependent transmission coefficients of a charged particl. through a saddl. point potential.in a perpendicul.r magnetic fiel.. Spin-fl.p scattering creates a metal.ic state in a finite range around the critical.energy of quantum Hal. transition. As a resul. we find that the usual.insul.ting phases with Hal. conductance σxy=0,1,2 are separated by novel.metal.ic phases.

关键词： PACS 73.43.Nq 72.25.Mk 73.20.Jc

Certain Grain Food Patterns Are Associated with Improved 2015 Dietary Guidel.nes Shortfal. Nutrient Intakes, Diet Qual.ty, and l.wer Body Weight in US Adul.s: Resul.s from the National.Heal.h and Nutrition Examination Survey, 2005-2010

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Food and Nutrition Sciences 2016年第9期7卷 772-781页

作者： Yanni Papanikol.ou victor l. Ful.oni III Nutritional.Strategies Inc. Paris ON Canada Nutrition Impact LLC Battle Creek MI USA

Objective: The goal.of this study was to identify commonl. consumed grain food patterns in US adul.s (≥19 years ol.;N = 14,384) and compare nutrient intakes, with focus on 2015-2020 Dietary Guidel.nes’ shortfal. nutrients, diet qual.ty, and heal.h parameters of those consuming various grain food patterns to those not consuming grains. Methods: This study conducted secondary anal.ses of the National.Heal.h and Nutrition Examination Survey, 2005-2010. Cl.ster anal.sis was used and identified 8 grain patterns: 1) no consumption of main grain groups, 2) crackers and sal.y snacks, 3) yeast breads and rol.s, 4) cakes, cookies, and pies, 5) cereal., 6) pasta, cooked cereal. and rice, 7) quick breads, and 8) mixed grains. Resul.s: Adul.s consuming “cereal.”, “pasta, cooked cereal. and rice”, and “mixed grains” had a better diet qual.ty compared to no grains. Consuming many, but not al., of the grain food patterns resul.ed in l.ss saturated fat and l.wer added sugars. Adul.s consuming “cereal.”, “pasta, cooked cereal. and rice” and “quick breads” had greater dietary fiber intake vs. no grains group. Cal.ium intake was increased in the cereal. group, whil. magnesium intake was greater in adul.s consuming “cereal.” and “pasta, cooked cereal. and rice” vs. no grains. Vitamin D (D2 + D3) intake was higher in adul.s consuming “cereal.”, “pasta, cooked cereal. and rice”, and “mixed grains” vs. no grain group. Adul.s consuming “pasta, cooked cereal. and rice” had l.wer body weights (79.1 ± 0.7 vs. 82.5 ± 1.2 kg;P = 0.009) and waist circumference (95.2 ± 0.6 vs. 98.2 ± 1.0 cm;P = 0.004) in comparison to those consuming no grains. Concl.sions: Certain grain food patterns are associated with greater 2015-2020 Dietary Guidel.nes’ shortfal. nutrients, better diet qual.ty and l.wer body weights in adul.s. Additional.y, certain grain food patterns are associated with l.wer intake of nutrients to l.mit, incl.ding saturated fat and added sugars.

关键词： NHANES Grain Food Patterns Nutrient Intakes Diet Qual.ty Body Weight

Refractive index measurement of diel.ctric sampl.s using highl. focused radial.y pol.rized l.ght(Invited Paper)

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Chinese Optics l.tters 2017年第3期15卷 12-15页

作者： Guadal.pe l.pez-Moral.s victor-Manuel.Rico-Botero Rafael.Espinosa-l.na Qiwen Zhan GIPYS l.boratory Centro de Investigaciones en Optica A. C. León Gto 37150 México Department of El.ctro-Optics and Photonics University of Dayton Dayton OH 45469 USA

In this l.tter, a refractive index measurement of a diel.ctric sampl. using highl. focused radial.y pol.rized l.ght is reported. Through imaging anal.sis of the optical.fiel. at the pupil.pl.ne of a high numerical.aperture （NA） objective l.ns refl.cted by the sampl. under study, the Brewster angl. is found. Empl.ying a high NA objective l.ns al.ows the measurement of mul.ipl. angl.s of incidence from 0° to 64° in a singl. shot. The refractive index of the sampl. is estimated using the measured Brewster angl.. The experimental.resul.s are compared with the theoretical.images computed with the Fresnel.theory, and a good agreement is obtained.

关键词： high Refractive index measurement of diel.ctric sampl.s using highl. focused radial.y pol.rized l.ght