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Effects.of s.te preparation methods.on s.il phys.cal properties.and outplanting s.cces. of coniferous.s.edlings.in boreal fores.s

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Journal of Fores.ry Res.arch 2024年第2期35卷 70-80页

作者： Aleks.y s.Ilints.v Elena N.Nakvas.na alexander P.Bogdanov Northern Res.arch Ins.itute of Fores.ry 13 Nikitova Str.Arkhangelsk 163062Russian Federation Department of s.lviculture and Fores. Management Northern(Arctic)Federal University Named After M.V.LomonosovSevernoy Dviny Emb.17Arkhangelsk 163002Russian Federation

This.s.udy as.es.ed the effect of patch s.arification and mounding on the phys.cal properties.of the root layer and the s.cces. of tree planting in various.types.of *** s.udy was.conducted on 12 fores. s.tes.in taiga fores.s.of the European part of Rus.ia.A total of 54 plots.were s.t up to as.es. s.edling s.rvival;root collar diameter,height,and heigh increment were meas.red for 240 s.edlings.to as.es. *** the rooting layer,240 s.il s.mples.were taken to determine phys.cal *** s.udy s.owed that s.il treatment methods.had no effect on bulk dens.ty and total poros.ty in Cladina ***,reduced s.il mois.ure was.noted,particularly in mounds.res.lting in increas.d *** Myrtillus.s.tes.there were increas.d bulk dens.ty,reduced s.il mois.ure,and total poros.ty in the *** treatment in Polytrichum s.tes.res.lted in reduced s.il mois.ure and increas.d aeration *** the Myrtillus.and Polytrichum s.tes.patch s.arification had no effects.on phys.cal *** Polytrichum s.tes.s.rvival rates.heights.and heigh increments.of bareroot Norway s.ruce s.edlings.in mounds.were higher than in patches.however,the s.me did not apply to *** Cladina and Myrtillus.s.tes.there was.no difference in growth for bareroot and containeris.d s.edlings.with different s.il *** conditions.and s.il types.s.ould be cons.dered when applying different s.il treatment methods.to ens.re high s.rvival rates.and s.cces.ful s.edling growth.

关键词： Boreal fores.s Mechanical s.te preparation Patch s.arification Mounding s.il properties Containeris.d s.edlings Bareroot s.edlings

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Varicocele management in the era of in vitro fertilization/intracytoplas.ic s.erm injection

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As.an Journal of Andrology 2016年第3期18卷 343-348,I0006,I0007页

作者： Piyus. Pathak Aravind Chandras.ekar Tariq s.Hakky alexander W Pas.us.ak s.ott Department of Urology Baylor College of Medicine Houston TX USA s.ott Department of Urology Kaiser Permanente Riverside Medical Center Riverside CAUSA Advanced Uro ogy At anta GA USA s.ott Department of Urology Center for Reproductive Medicine Baylor College of Medicine Houston TX USA s.ott Department of Urology Baylor College of Medicine Houston TxUSA.

Varicocele is.the mos. common s.rgically treatable caus. of male infertility, and often res.lts.in alterations.in s.men parameters. s.erm DNA damage, and changes.to the s.minal milieu. Varicocele repair can res.lt in improvement in thes. parameters.in the majority of men with clinical varicocele; data s.pporting repair in men with s.bclinical varicocele are les. definitive. In couples.s.eking fertility us.ng as.is.ed reproductive technologies.（ARTs., varicocele repair may offer improvement in s.men parameters.and s.erm health that can increas. the likelihood of s.cces.ful fertilization us.ng techniques.s.ch as.in vitro fertilization （IVF） or intracytoplas.ic s.erm injection （ICs.）, or may decreas. the level of ART needed to achieve s.cces.ful pregnancy. Male infertility is.an indicator of general male health, and evaluation of the infertile male with an eye toward future health can facilitate optimal s.reening and treatment of thes. men. Furthermore, varicocele may repres.nt a progres.ive les.on, offering an argument for its.repair, although this.is.currently unclear.

关键词： hypogonadis. Leydig cell male fertility s.rtoli cell varicocele

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The Ionic and Electron s.ream Acceleration

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Journal of Modern Phys.cs 2011年第12期2卷 1550-1552页

作者： alexander s. Chikhachev 不详

The work deals.with the s.eady flows.of ions.and electrons.coinciding in quantity and direction. The one- dimens.onal problem cons.ders.the cold ions.and electrons.characterized by the is.ntropic s.ate. The area was.defined in which the s.eed of ions.exceeds.the ion-acous.ic s.eed. The problem may be of interes. for the creation of accelerators.in which the charged particles.have to leave the accelerator in pairs.excluding the pos.ibility of charge accumulation in the accelerator.

关键词： Is.ntropic s.ate Ions Flow Electrons Flow Ion-Acous.ic s.eed

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A s.atis.ical s.udy of Magnetic Flux Emergence in s.lar Active Regions.Prior to s.ronges. Flares

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Res.arch in As.ronomy and As.rophys.cs 2024年第4期24卷 147-160页

作者： alexander s.Kuts.nko Valentina I.Abramenko Andrei A.Plotnikov Crimean As.rophys.cal Obs.rvatory p/o NauchnyCrimea298409Russia

Us.ng the data on magnetic field maps.and continuum intens.ty for s.lar Cycles.23 and 24,we explored 100 active regions.ARs.that produced M5.0 or s.ronger *** focus.on the pres.nce/abs.nce of the emergence of magnetic flux in thes. ARs.2-3 days.before the s.rong flare *** found that 29 ARs.in the s.mple emerged monotonically amids. quiet-s.n.A major emergence of a new magnetic flux within a pre-exis.ing AR yielding the formation of a complex flare-productive configuration was.obs.rved in another 24 *** 30 ARs.an ins.gnificant(in terms.of the total magnetic flux of pre-exis.ing AR)emergence of a new magnetic flux within the pre-exis.ing magnetic configuration was.obs.rved;for s.me of them the emergence res.lted in a formation of a configuration with a s.all δ-s.ns.ot;11 out of 100 ARs.exhibited no s.gnatures.of magnetic flux emergence during the entire interval of *** s.x cas.s.the emergence was.in progres. when the AR appeared on the Eas.ern limb,s. that the clas.ification and timing of emergence were not *** conclude that the recent flux emergence is.not a neces.ary and/or s.fficient condition for s.rong flaring of an *** flux emergence rate of flare-productive ARs.analyzed here was.compared with that of flare-quiet ARs.analyzed in our previous.*** revealed that the flare-productive ARs.tend to dis.lay fas.er emergence than the flare-quiet ones.do.

关键词： s.n:activity s.n:flares s.n:magnetic fields

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Inves.igation of is.tope compos.tion of nuclear fragments.with angular momentum and Coulomb effects.in peripheral ^(84)Kr+ ^(112,124)s. collis.ns.at 35 A MeV

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Nuclear s.ience and Techniques 2015年第2期26卷 111-116页

作者： Nihal Buyukcizmeci Ays.gul Ergun Hamide Imal Riza Ogul alexander s.Botvina Department of Phys.cs University of Seluk Ins.itute for Nuclear Res.arch Russian Academy of Sciences Frankfurt Ins.itute for Advanced s.udies J.W. Goethe University

New theoretical calculations.are performed to inves.igate the Coulomb proximity and angular momentum effects.on multifragmentation picture for84Kr+112,124 s. collis.ons.at an incident beam energy of 35 Me V/*** and is.topic dis.ributions.and the mean neutron-to-proton ratios.of the fragments.are reproduced within the microcanonical Markov chain calculations.on the bas.s.of s.atis.ical Multifragmentation Model. It is.s.own that the Coulomb interactions.and angular momentum effects.are very important to reproduce is.topic compos.tion of nuclear fragments.in peripheral heavy-ion collis.ons.at Fermi energies. Our res.lts.imply that it is.pos.ible to inves.igate in laboratories.the modification of s.ructure parameters.of fragments. s.ch as.the s.mmetry energy coefficient, at s.bnuclear dens.ties.in dens. environment of other s.ecies.

关键词：同位素组成库仑作用角动量核碎片 MeV 重离子碰撞库仑相互作用多重碎裂

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Can an 8^(th) grade s.udent learn point of care ultras.und?

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World Journal of Emergency Medicine 2019年第2期10卷 109-113页

作者： alexander s.Kwon s.adi Lahham John C.Fox s.ge Hill s.hool Department of Emergency Medicine UC Irvine Medical Center UC Irvine School of Medicine

BACKGROUND: Point-of-care ultras.und has.gained wides.read us. in developing countries.due to decreas.d cos. and improved telemedicine capabilities. Ultras.und training, s.ecifi cally image acquis.tion s.ills. is.occurring with more frequency in non-medical pers.nnel with varying educational levels.in thes. underdeveloped areas. This.s.udy evaluates.if s.udents.without a high s.hool education can be trained to acquire us.ful FAs. images. and to determine if an 8^(th) grade s.udent can teach peers.thes. ***: The 8^(th) grade s.udents.at a s.all middle s.hool were divided into two groups. One group received training by a certified medical s.nographer, while the other group received training by a peer 8^(th) grade s.udent trainer who had previous.y received training by the s.nographer. After training, each s.udent was.independently tes.ed by s.anning the four FAs. locations. A blinded ultras.und expert evaluated thes. images.and deemed each image adequate or inadequate for clinical ***: Eighty video image clips.were obtained. The overall image adequacy rate was.74%. The s.lenorenal window had the highes. rate at 95%, followed by retroves.cal at 90%, hepatorenal at 75%, and s.bxiphoid cardiac at 35%. The adequacy rate of the s.nographer-trained group was.78%, while the adequacy rate of the s.udent-trained group was.70%. The difference in image adequacy rate between the two groups.was.not s.gnifi cant(P-value 0.459).CONCLUs.ON: The majority of 8^(th) graders.obtained clinically adequate FAs. images.after minimal training. Additionally, the s.udent-trained group performed as.well as.the s.nographer-trained group.

关键词： Point of care ultras.und FAs. Image acquis.tion Training

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Photon-pair generation in a quadratically nonlinear parity-time s.mmetric coupler

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Photonics.Res.arch 2018年第4期6卷 I0006-I0009页

作者： DIANA A.ANTONOs.AN alexander s.s.LNTs.V ANDREY A.s.KHORUKOV Nonlinear Phys.cs.Centre Research School of Physics and Engineering Australian National University s.hool of Mathematical and Phys.cal s.iences University of Technology Sydney

Integrated nonlinear waveguide s.ructures.enable generation of quantum entangled photons. We des.ribe theoretically the effects.of s.atially inhomogeneous.los. on the creation of photon pairs.through s.ontaneous.parametric down-convers.on in quadratically nonlinear directional couplers. where photons.experience effective parity-time(PT) s.mmetric potential due to the pres.nce of optical los. in one of the waveguides. We s.ow that for los.es.below the PT-breaking thres.old, the quantum photon s.ates.can be flexibly tuned s.milarly to cons.rvative couplers. whereas.for s.ronger los.es. the correlations.between two waveguide modes.are s.ppres.ed. We als. formulate a quantum-clas.ical corres.ondence with s.m-frequency generation for fas. evaluation of device *** res.lts.can be applied for the des.gn of quantum plas.onic circuits.

关键词：非线性波导结构量子光子通讯技术

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Adaptive Moving Mes. Central-Upwind s.hemes.for Hyperbolic s.s.em of PDEs.Applications.to Compres.ible Euler Equations.and Granular Hydrodynamics

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Communications.on Applied Mathematics.and Computation 2021年第3期3卷 445-479页

作者： alexander Kurganov Zhuolin Qu Olga s.Rozanova Tong Wu Department of Mathematics.and s.s.ech International Center for Mathematics Southern University of Science and TechnologyShenzhen 518055Guangdong ProvinceChina Department of Mathematics The University of Texas at San AntonioSan AntonioTX 78249USA Mathematics.and Mechanics.Faculty Moscow State UniversityMoscow 119991Russia

We introduce adaptive moving mes. central-upwind s.hemes.for one-and two-dimens.onal hyperbolic s.s.ems.of cons.rvation and balance *** propos.d methods.cons.s. of three ***,the s.lution is.evolved by s.lving the s.udied s.s.em by the s.cond-order s.mi-dis.rete central-upwind s.heme on either the one-dimens.onal nonuniform grid or the two-dimens.onal s.ructured quadrilateral *** the evolution s.ep is.complete,the grid points.are redis.ributed according to the moving mes. differential ***,the evolved s.lution is.projected onto the new mes. in a cons.rvative *** res.lting adaptive moving mes. methods.are applied to the one-and two-dimens.onal Euler equations.of gas.dynamics.and granular hydrodynamics.*** numerical res.lts.demons.rate that in both cas.s.the adaptive moving mes. central-upwind s.hemes.outperform their uniform mes. counterparts.

关键词： Adaptive moving mes. methods Finite-volume methods Central-upwind s.hemes Moving mes. differential equations Euler equations.of gas.dynamics Granular hydrodynamics s.ngular s.lutions

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Volcanic As. in the Atmos.here and Ris.s.for Civil Aviation:A s.udy in European Cris.s.Management

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International Journal of Dis.s.er Ris. s.ience 2013年第1期4卷 9-19页

作者： David alexander Ins.itute for Ris. and Dis.s.er Reduction University College London London WC1E 6BT United Kingdom

This.paper us.s.the eruption of the Icelandic volcano Eyjafjallaj?kull in April and May 2010 as.a cas. s.udy of dis.uption to civil aviation by airborne as., with emphas.s.on ris. management as.ects. s.vere curtailment of flights.over much of Europe took place during the cris.s. which las.ed for s.ightly more than one week. More than 8.5 million pas.engers.were s.randed and commerce was.profoundly affected. The United Kingdom was.one of the wors. impacted countries.and took the lead in managing the cris.s. The paper cons.ders.elements.of the decis.on-making proces. that formed the bas.s.of the UK Government’s.emergency res.ons.. It examines.the relations.between s.ience, governance, and economi c imperatives. Phys.cal thres.olds.guiding decis.ons.to res.rict airs.ace were defined s.mewhat arbitrarily, which may have increas.d dis.uption. A damaging form of ris. avers.on prevailed at certain points.in the cris.s. Lack of preexis.ing procedures.and planning meant that the res.ons. to dynamically changing meteorological conditions.had to be improvis.d. At the s.me time, lack of integration between different modes.in the European trans.ortation s.s.em meant that had the cris.s.continued any longer there would have been s.vere problems.in moving s.randed people and commodities. as.well as.s.aring economic los.es. Eruptions.s.milar to or more s.rious.than that of Eyjafjallaj?kull are perfectly pos.ible in Europe in the not-too-dis.ant future.

关键词： Atmos.here aviation meteorological

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s.cial Vulnerability(Re-)As.es.ment in Context to Natural Hazards. Review of the Us.fulnes. of the s.atial Indicator Approach and Inves.igations.of Validation Demands

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International Journal of Dis.s.er Ris. s.ience 2019年第2期10卷 220-232页

作者： alexander Fekete Ins.itute of Res.ue Engineering and Civil Protection TH K?ln-University of Applied Sciences

While s.cial vulnerability as.es.ments.s.A)us. s.atial indicators.and indices.that have become s.ate of the art, they als. receive s.bs.antial critique. This.article analyzes. by means.of a literature review of 63 articles. if and in which as.ects.s.ch an indicator approach is.regarded as.us.ful by s.ientific s.udies. The findings.indicate a need for more res.arch on the validation and jus.ification of indicators. This.article s.pports.the conceptual development of s.A by adding to reflection about advancements.and applications. but als. s.ortcomings. The main advancement area dis.us.ed is.validation and the demand for es.ablis.ing benchmark criteria for vulnerability. Bas.d on this. longitudinal monitoring of vulnerability and validation s.udies.are conceivable bas.d on exis.ing s.A, but thes. efforts.demand more conceptual development.

关键词： Dis.s.er ris. Indicator s.lection s.cial vulnerability index Validation criteria Vulnerability indicators

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