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International j.urnal of Sediment Research 2007年第1期22卷 1-15页

作者： R. A. KUHNLE D. G. WREN j. p. chambers Dr.Research Hydraulic Engineer National Sedimentation Laboratory U. S. Department of Agriculture Agricultural Research Service Oxford Mississippi 38655 USA Senior Research Scientist National Center for Physical Acoustics University of Mississippi University Mississippi 38677 USA

Collection of samp.es of susp.nded sediment transp.rted by streams and rivers is difficult and exp.nsive. Emerging technologies, such as acoustic backscatter, have p.omise to decrease costs and allow more thorough samp.ing of transp.rted sediment in streams and rivers. Acoustic backscatter information may be used to calculate the concentration of susp.nded sand-sized sediment given the vertical distribution of sediment size. Therefore, p.ocedures to accurately comp.te susp.nded sediment size distributions from easily obtained river data are badly needed. In this study, techniques to p.edict the size of susp.nded sand are examined and their ap.lication to measuring concentrations using acoustic backscatter data are exp.ored. Three methods to p.edict the size of sediment in susp.nsion using bed sediment, flow criteria, and a modified form of the Rouse equation yielded mean susp.nded sediment sizes that differed from means of measured data by 7 to 50 p.rcent. When one samp.e near the bed was used as a reference, mean error was reduced to about 5 p.rcent. These errors in size determination translate into errors of 7 to 156 p.rcent in the p.ediction of sediment concentration using backscatter data from 1 MHz single frequency acoustics.

关键词： Susp.nded sediment Grain size Acoustic backscatter Concentration errors

p.oblems, p.tentials and future of industrial crystallization

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Frontiers of Chemical Science and Engineering 2013年第1期7卷 1-8页

作者： j. Ulrich p. Frohberg Center for Engineering Science Thermal Process Engineering Martin Luther University Halle-Wittenberg D-06099 Halle (Saale) Germany

This review discusses imp.rtant research develop.ents and arising challenges in the field of industrial crystallization with an emp.asis on recent p.oblems. The most relevant areas of research have been identified. These are the p.ediction of p.ase diagrams; the p.ediction of effects of imp.rities and additives; the design of fluid dynamics; the p.ocess control with p.ocess analytical technologies （p.T） tools; the p.lymorp. and solvate screening; the stabilization of non-stable p.ases; and the p.oduct design. The p.tential of industrial crystallization in various areas is outlined and discussed with p.rticular reference to the p.oduct quality, p.ocess design, and control. On this basis, p.ssible future directions for research and develop.ent have been p.inted out to highlight the imp.rtance of crystallization as an outstanding technique for sep.ration, p.rification as well as for p.oduct design.

关键词： industrial crystallization p.tentials and future p.oduct design

A statistical study of the interdep.ndence of solar wind p.rameters

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Chinese j.urnal of Astronomy and Astrop.ysics 2009年第4期9卷 485-493页

作者： Shollykutty j.hn p. j. Kurian Dep.rtment of p.ysics St Joseph’s CollegeAlappuzha.Kerala-688012 India p.ysics Research Centre St.Berchmans’ CollegeChanganacherry Kerala-686101 India

Correlation analysis of solar wind p.rameters, namely solar wind velocity, p.oton density, p.oton temp.rature and mean interp.anetary magnetic field （IMF） from the ACE sp.cecraft data near Earth, was done. To our best knowledge, this study is a novel one since we consider here only the p.rameters inside the solar wind, including the mean IMF and, hence, the solar wind is a self consistent system. We have p.op.sed a Multip.e Linear Regression （MLR） model for the p.ediction of the resp.nse variable （solar wind velocity） using the p.rameters p.oton density, p.oton temp.rature and mean IMF measured as daily averages. About 60% of the observed value can be p.edicted using this model. It is shown that, in general, the correlation between solar wind p.rameters is significant. A deviation from the p.ediction at the solar maximum is interp.eted. These results are verified by a grap.ical method.

关键词： solar wind-statistical model-correlation-solar wind p.rameters

Relative toxicity of three wheat herbicides to two sp.cies of Coccinellidae

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Insect Science 2010年第5期17卷 434-438页

作者： j. p. Michaud German Vargas Dep.rtment of Entomology Kansas State University Hays Kansas USA

On the High p.ains of the USA, herbicides sp.cific for broad-leaf weeds are regularly ap.lied to winter wheat in the early sp.ing, sometimes late enough to coincide with the colonization of fields by cereal ap.ids and their natural enemies. We tested the toxicity of three such herbicides, Ally （Dup.nt）, Rave （Syngenta） and 2,4-D ester （generic）, to neonate larvae of two coccinellid sp.cies imp.rtant in cereal ap.id biocontrol, Coleomegilla maculata DeGeer and Hip.odamia convergens Gurrin-Mrneville. Top.cal treatment of larvae with 2,4-D resulted in 25% and 60% mortality in the two sp.cies, resp.ctively, with surviving C. maculata larvae exp.riencing a 5% increase in develop.ental time. No significant effects were noted for the other two materials, save for a 2.5% increase in develop.ental time for C. maculata larvae exp.sed to Rave. No material caused significant mortality in either sp.cies when larvae were fed on p.ey （Schizap.is graminum Rondani） treated with herbicide 24 h earlier, although 2,4-D reduced develop.ental time slightly in C. maculata. When herbicide ap.lications are delayed enough in sp.ing to coincide with ap.id activity in wheat, farmers can reduce the risk of disrup.ing biological control by selecting an alternative to 2,4-D.

关键词： 2,4-D Coleomegilla maculata dicamba Hip.odamia convergens Schizap.is graminum thifensulfuron methyl

Treating amyotrop.ic lateral sclerosis with allogeneic Schwann cell-derived exosomal vesicles: a case rep.rt

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Neural Regeneration Research 2025年第4期20卷 1207-1216页

作者： p.scal j.Goldschmidt-Clermont Aisha Khan George j.msheleishvili p.tricia Graham Adriana Brooks Risset Silvera Alexander j.p.Goldschmidt Damien D.p.arse W.Dalton Dietrich Allan D.Levi j.mes D.Guest Miller School of Medicine University of MiamiMiamiFLUSA Stem Cell Institute Miller School of MedicineUniversity of MiamiMiamiFLUSA The Miami p.oj.ct to Cure p.ralysis Miller School of MedicineUniversity of MiamiMiamiFLUSA Alzady International LLC MiamiFLUSA Neurological Surgery Miller School of MedicineUniversity of MiamiMiamiFLUSA

Schwann cells are essential for the maintenance and function of motor neurons,axonal networks,and the neuromuscular *** amyotrop.ic lateral sclerosis,where motor neuron function is p.ogressively lost,Schwann cell function may also be ***,imp.rtant signaling and p.tential trop.ic activities of Schwann cell-derived exosomal vesicles have been *** case rep.rt describes the treatment of a p.tient with advanced amyotrop.ic lateral sclerosis using serial intravenous infusions of allogeneic Schwann cell-derived exosomal vesicles,marking,to our knowledge,the first instance of such *** 81-year-old male p.tient p.esented with a 1.5-year history of rap.dly p.ogressive amyotrop.ic lateral *** initial diagnosis,the p.tient underwent a combination of generic riluzole,sodium p.enylbutyrate for the treatment of amyotrop.ic lateral sclerosis,and *** p.tient volunteered to p.rticip.te in an FDA-ap.roved single-p.tient exp.nded access treatment and received weekly intravenous infusions of allogeneic Schwann cell-derived exosomal vesicles to p.tentially restore imp.ired Schwann cell and motor neuron *** confirmed that cultured Schwann cells obtained from the amyotrop.ic lateral sclerosis p.tient via sural nerve biop.y ap.eared imp.ired(senescent)and that exp.sure of the p.tient’s Schwann cells to allogeneic Schwann cell-derived exosomal vesicles,cultured exp.nded from a cadaver donor imp.oved their growth cap.city in *** a p.riod of observation lasting 10 weeks,during which amyotrop.ic lateral sclerosis Functional Rating Scale-Revised and p.lmonary function were regularly monitored,the p.tient received weekly consecutive infusions of 1.54×1012(×2),and then consecutive infusions of 7.5×1012(×6)allogeneic Schwann cell-derived exosomal vesicles diluted in 40 mL of Dulbecco’s p.osp.ate-buffered *** of the infusions were associated with adverse events such as infusion reactions(allergic or otherwise)or

关键词： allogeneic amyotrop.ic lateral sclerosis exosomes infusion neuromuscular j.nction Schwann cell

Oxygation Enhances Growth,Gas Exchange and Salt Tolerance of Vegetable Soybean and Cotton in a Saline Vertisol

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j.urnal of Integrative p.ant Biology 2009年第7期51卷 675-688页

作者： Surya p. Bhattarai David j. Midmore Centre for p.ant and Water Science Department of Molecular and Life SciencesCentral Queensland University

Imp.cts of salinity become severe when the soil is deficient in oxygen. OxygaUon （using aerated water for subsurface drip.irrigation of crop. could minimize the imp.ct of salinity on p.ants under oxygen-limiting soil environments. p.t exp.riments were conducted to evaluate the effects of oxygation （12% air volume/volume of water） on vegetable soybean （moderately salt tolerant） and cotton （salt tolerant） in a salinized vertisol at 2, 8, 14, 20 dS/m ECe. In vegetable soybean, oxygation increased above ground biomass yield and water use efficiency （WUE） by 13% and 22%, resp.ctively, comp.red with the control. Higher yield with oxygation was accomp.nied by greater p.ant height and stem diameter and reduced sp.cific leaf area and leaf Na^＋ and CI^- concentrations. In cotton, oxygation increased lint yield and WUE by 18% and 16%, resp.ctively, comp.red with the control, and was accomp.nied by greater canop. light intercep.ion, p.ant height and stem diameter. Oxygation also led to a greater rate of p.otosynthesis, higher relative water content in the leaf, reduced crop.water stress index and lower leaf water p.tential. It did not, however, affect leaf Na^＋ or CI^- concentration. Oxygation invariably increased, whereas salinity reduced the K^＋： Na^＋ ratio in the leaves of both sp.cies. Oxygation imp.oved yield and WUE p.rformance of salt tolerant and moderately tolerant crop. under saline soil environments, and this may have a significant imp.ct for irrigated agriculture where saline soils p.se constraints to crop.p.oduction.

关键词： cotton irrigation light intercep.ion oxygation saline soil salt exclusion stem diameter vegetable soybean

Solving the Dyson-Schwinger equation around its first singularities in the Borel p.ane

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Frontiers of p.ysics 2016年第6期11卷 25-30页

作者： Clavier, p.erre j. Bellon, Marc p. Sorbonne Universites UPMC Univ Paris 06 UMR 7589 LPTHE Paris France (GRID:grid.5805.8) (ISNI:***) CNRS UMR 7589 LPTHE Paris France (GRID:grid.4444.0) (ISNI:0000 0001 2112 9282)

The Dyson-Schwinger equation of the massless Wess-Zumino model is written as an equation over the anomalous dimension of the theory. Its asymp.otic behavior is derived and the p.ocedure to comp.te the p.rturbations of this asymp.otic behavior is detailed. This p.ocedure uses ill-defined obj.cts. To solve this, the Dyson-Schwinger equation is rewritten for the Borel p.ane. It is shown that the ill- defined p.ocedure in the p.ysical p.ane can be ap.lied in the Borel p.ane. Other results obtained in the Borel p.ane are stated and the p.oof for one result is described.

关键词： Dyson-Schwinger equation Wess-Zumino model Borel transform

Factors Affecting Distribution of Vegetation Typ.s on Abandoned Crop.and in the Hilly-Gullied Loess p.ateau Region of China

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p.dosp.ere 2008年第1期18卷 24-33页

作者： j.AO j.-Ying j. TZANOp.ULOS p. XOFIS j. MITCHLEY Institute of Soil and Water Conservation Northwest Sci-Technology University of Agriculture and Forestry Yangling Shaanxi 712100 (China) Centre for Agro-Environmental Research Department of Agriculture The University of Reading Barley Gate PO Box237 Reading RG6 6.4 R (UK) Imp.rial College London Department of Agricultural Sciences Wye Campus Wye Ashford Kent TN25 5AH (UK) nstitute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resources Yangling Shaanxi 712100 (China)

A study was conducted in the forest-step.e region of the Loess p.ateau to p.ovide insight into the factors affecting the p.ocess of vegetation establishment,and to p.ovide recommendations for the selection of indigenous sp.cies in order to sp.ed up.the succession p.ocess and to allow the establishment of vegetation more resistant to soil *** distinctive vegetation typ.s were identified,and their distribution was affected not only by the time since abandonment but also by other environmental factors,mainly soil water and total p.in the up.er soil *** of the vegetation typ.s,dominated by Artemisia scop.ria,formed the early successional stage after abandonment while the other three typ.s formed later successional stages with their distribution determined by the soil water content and total *** can be concluded that the selection of ap.rop.iate sp.cies for introduction to accelerate succession should be determined by the local conditions and esp.cially the total p.concentration and soil water content.

关键词： abandoned crop.and Loess p.ateau soil erosion vegetation variation

Far-infrared absorp.ion studies of Be accep.ors in δ-dop.d GaAs/AlAs multip.e quantum wells

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Science China(p.ysics,Mechanics & Astronomy) 2006年第6期49卷 702-708页

作者： M. p. Halsall p. Harrison M. j. Steer School of p.ysics and Astronomy the University of ManchesterManchester M60 1QD U. K. School of Electronic and Electrical Engineering University of LeedsLS2 9JT U. K. Ep.RC Ⅲ-V Semiconductor Central Facility Department of Electronic and Electrical Engineering University of SheffieldS1 3JD U. K.

We rep.rt a far-infrared absorp.ion study of internal transitions of shallow Be accep.ors in both bulk GaAs and a series of δ-dop.d GaAs/AlAs multip.e quantum well samp.es with well thicknesses of 20,15 and 10 nm. Low temp.rature far-infrared absorp.tion measurements clearly show three p.incip.l absorp.ion lines due to transitions of Be-accep.or states from the ground state to the first three odd-p.rity excited states,resp.c-tively. Using a variational p.incip.e,the 2p.1s transition energies of quantum confined Be accep.ors are calculated as a function of the well width. It is found that the theoretical calculation of the 2p. → 1s transitions is in good agreement with the D-like line exp.ri-mental data.

关键词： shallow accep.or imp.rities,δ-dop.d,GaAs/AlAs multip.e quantum wells,far-infrared absorp.ions.

Tests of sp.ceborne rain radar retrieval algorithms by simulation

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Chinese Science Bulletin 1997年第5期42卷 402-405页

作者： j. Testud p. Amayenc Centre d' etudes des Environnements Terrestre et p.anetaires Issy-les-Moulineaux FranceCentre d' etudes des Environnements Terrestre et Planetaires Issy-les-Moulineaux France

THE rainfall rate is related statistically to the radar reflectivity, but the return p.wer of

关键词： rainfall rate sp.ceborne rain radar algorithm.