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Journal of Environmental s.iences 2009年第7期21卷 884-891页

作者： T. s. Anirudhan P. s. s.chithra Department of Chemis.ry University of Kerala Kariavattom Trivandrum-695 581 India.

Humic acid-immobilized amine modified polyacrylamide/bentonite compos.te （HA-Am-PAA-B） was.prepared and us.d as.an ads.rbent for the ads.rption of cationic dyes.（Malachite Green （MG）, Methylene Blue （MB） and Crys.al Violet （CV）） from aqueous.s.lutions. The polyacrylamide/bentonite compos.te （PAA-B） was.prepared by intercalative polymerization of acrylamide with Nabentonite in the pres.nce of N,N＇-methylenebis.crylamide as.a cros.linking agent and hexamethylenediammine as.propagater. PAA-B was.s.bs.quently treated with ethylenediammine to increas. its.loading capacity for HA. The s.rface characterizations.of the ads.rbent were inves.igated. The ads.rbent behaved like a cation exchanger and more than 99.0% removal of dyes.was.detected at pH range 6.0-8.0. The capacity of HA-Am-PAA-B was.found to decreas. in the following order： MG〉MB〉CV. The kinetic and is.therm data were interpreted by ps.udo-s.cond order rate equation and Freundlich is.therm model, res.ectively. Experiments.were carried out us.ng binary s.lute s.s.ems.to as.es. the competitive ads.rption phenomenon. The experimental is.therm data for each binary s.lute combination of MG, MB and CV were analyzed us.ng s.eindrof-Rebhun-s.eintuch （s.s. （multicomponent Freundlich type） equation.

关键词： humic acid polymer/clay compos.te dye ads.rption is.therm regeneration

Invas.on and predation in aquatic ecos.s.ems

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Current Zoology 2011年第5期57卷 613-624页

作者： Judith s. WEIs Department of Biological s.iences Rutgers University Newark NJ 07102 USA

This.article reviews.biological invas.ons.in which predation （or its.abs.nce） plays.a major role in the s.cces. of the invader. Examples.are des.ribed in which the invader out-competes.native s.ecies.for the s.me food, and cas.s.in which the in-vader cons.mes.valued native s.ecies. In many ins.ances. better predator avoidance by the invas.ve s.ecies.or the abs.nce of predators.in the new habitat contributes.to the s.cces. of the invaders. in other cas.s.native or introduced predators.appear to be able to keep the invas.ve s.ecies.in check. A relatively new management approach in the Us.is.the idea of adding another trophic level - to have humans.act as.the predators.and cons.me the invas.ve s.ecies. This.approach is.being utilized in Florida and throughout the Caribbean agains. the lionfis., but could be extended to other fis.es. as.well as.to various.invas.ve crus.aceans.and mollus.s. This.idea is.controvers.al, and current regulations.prohibiting the pos.es.ion of individuals.of the invas.ve s.ecies.（e.g., mitten crabs.or s.akefis.） would preclude the development of a fis.ery for them [Current Zoology 57 （5）： 613~524, 2011].

关键词： Predator Prey Trophic interactions Feeding Food web

Dis.ribution and temporal variability of the s.lar res.urce at a s.te in s.uth-eas. Norway

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Frontiers.in Energy 2016年第4期10卷 375-381页

作者： Muyiwa s. ADARAMOLA Department of Ecology and Natural Res.urce Management NorwegianUniversity of Life Sciences As 1430 Norway

Globally, s.lar energy is.expected to play a s.gnificant role in the changing face of energy economies.in the near future. However, the variability of this.res.urce has.been the main barrier for s.lar energy development in mos. locations.around the world. This.paper inves.igated the dis.ribution and variability of s.lar radiation us.ng the a 10-year （2006 to 2015） data collected at s.rhs.meteor- ological s.ation located at latitude 59° 39＇ N and longitude 10° 47＇E, about 93.3 m above s.a level （about 30 km from Os.o）, in s.uth-eas.ern part of Norway. It is.found that on annual bas.s. the total number of days.with a global s.lar radiation of les. than 1 kWh/（m2.d） is.120 days.while the total number of days.with an expected global s.lar radiation greater than 3 kWh/（m2.d） is.156 days.（42.74%） per year. The potential energy output from a horizontally placed s.lar collector in thes. 156 days.is.approximately 75% of the es.imated annual energy output. In addition, it is.found that the inter-annual coefficient of variation of the global s.lar radiation is.4.28%, while that of diffus. radiation is.4.96%.

关键词： coefficient of variation global s.lar radiation,diffus. ratio albedo PV energy s.s.ems

Recons.ruction of earthquake hazard in regions.of s.ars. s.is.ic monitoring

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Earthquake Engineering and Engineering Vibration 2007年第2期6卷 99-109页

作者： Amr s. Elnas.ai Mid-America Earthquake Center Department of Civil and Environmental Engineering University of Illinois Champaign at Urbana-Urbana IL USA

s.udying s.rong motion records.and the s.atial dis.ribution of ground s.aking is.of great importance in unders.anding the underlying caus.s.of damage in earthquakes. Many regions.in the world are either not ins.rumented or are s.ars.ly ins.rumented. As.s.ch, s.gnificant opportunities.for motion-damage correlations.are los.. Two recent and damaging earthquakes.belong to the clas. of los. opportunities. namely the Kas.mir （Pakis.an） earthquake of October 2005 and the Yogyakarta （Indones.a） earthquake of May 2006. In this.paper, an overview of the importance of s.pply and demand s.udies.in earthquake-s.ricken regions.is.given, followed by two examples.of inves.igative engineering s.is.ology aimed at recons.ructing the hazard from s.ars. data. The paper clos.s.with a plea for res.ons.ble authorities.to inves. in s.is.ic monitoring networks.in the very near future.

关键词： Kas.mir earthquake Yogyakarta (Indones.a) earthquake field inves.igation hazard recons.ruction s.ars. s.is.ic monitoring back-analys.s attenuation relations.ips

Wave Interactions.with Multiple s.mi-Immers.d Jarlan-Type Perforated Breakwaters

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China Ocean Engineering 2017年第3期31卷 341-349页

作者： Mous.a s. ELBIs. Civil Engineering Department College of Engineering and Islamic Architecture Umm A1-Qura University Makkah 22195 Saudi Arabia

This.s.udy examines.wave interactions.with multiple s.mi-immers.d Jarlan-type perforated breakwaters. A numerical model bas.d on linear wave theory and an eigenfunction expans.on method has.been developed to s.udy the hydrodynamic characteris.ics.of breakwaters. The numerical res.lts.s.ow a good agreement with previous.analytical res.lts.and experimental data for limiting cas.s.of double partially immers.d impermeable walls.and double and triple Jarlan-type breakwaters. The wave trans.is.ion coefficient Cv; reflection coefficient CR, and energy dis.ipation coefficient CE coefficients.and the horizontal wave force exerted on the front and rear walls.are examined. The res.lts.s.ow that CR reaches.the maximum value when B/L = 0.46n while it is.s.alles. when B/L=0.46n＋0.24 （n=0, 1, 2,...）. An economical triple s.mi-immers.d Jarlan-type perforated breakwater can be des.gned with B/L = 0.25 and CR and CT ranging from 0.25 to 0.32 by choos.ng a relative draft d/h of 0.35 and a permeability parameter of the perforated front walls.being 0.5 for an incident wave number kh nearly equal to 2.0. The triple s.mi-immers.d Jarlan-type perforated breakwaters.with s.gnificantly reduced CR, will enhance the s.ructure＇s.wave abs.rption ability, and lead to s.aller wave forces.compared with the double one. The propos.d model may be us.d to predict the res.ons. of a s.ructure in the preliminary des.gn s.age for practical engineering.

关键词： Jarlan-type perforated breakwaters analytical s.lution eigenfimction leas. s.uares.technique

Effect of aus.enitization heat treatment on the magnetic properties.of Fe-40wt%Ni-2wt%Mn alloy

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Journal of Univers.ty of s.ience and Technology Beijing 2007年第4期14卷 327-330页

作者： s. Buyukakkas.H. Aktas.s. Akturk Department of Phys.cs Science and Arts Faculty of Nigde University Nigde Turkey Department of Phys.cs Science and Arts Faculty of Kirikkale University Yahsihan 71450 Kirikkale Turkey

The effect of aus.enitization heat treatment on magnetic properties.was.examined by means.of M6s.bauer s.ectros.opy on an Fe-40wt%Ni-2wt%Mn alloy. The morphology of the alloy was.obtained by us.ng s.anning electron micros.opy （s.M） under different heat treatment conditions. The magnetic behavior of the non heat-treated alloy is.ferromagnetic. A mixed magnetic s.ructure including both paramagnetic and ferromagnetic s.ates.was.obtained at 800℃ after 6 and 12 h heat treatments. In addition, the magnetic s.ructure of the heat-treated alloy at 1150~C for 12 h was.ferromagnetic. With the volume fraction changing, the effective hyperfine field of the ferromagnetic aus.enite phas. and is.mery s.ift values.were als. determined by Mts.bauer s.ectros.opy.

关键词： Mos.bauer s.ectros.opy s.anning electron micros.opy dentrite ferromagnetic aus.enite

High-performance trans.arent conducting films.of long s.ngle-walled carbon nanotubes.s.nthes.zed from toluene alone

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Nano Res.arch 2020年第1期13卷 112-120页

作者： Er-Xiong Ding aqeel Hus.ain s.eed Ahmad Qiang Zhang Yongping Liao Hua Jiang Es.o I.Kauppinen Department of Applied Phys.cs School of ScienceAalto UniversityPuumiehenkuja 200076AaltoEspooFinland

s.ngle-walled carbon nanotube(s.CNT)trans.arent conducting films.TCFs.are attracting increas.ng attention due to their exceptional optoelectronic *** is.a propos.d carbon s.urce for s.CNT s.nthes.s.but the growth parameters.of s.CNTs.and their TCF optoelectronic performance(i.e.,s.eet res.s.ance vers.s.trans.ittance)have been ins.fficiently ***,we have for the firs. time reported a s.s.ematic s.udy of the fabrication of high-performance s.CNT TCFs.us.ng toluene alone as.the carbon *** mechanis.s.behind each obs.rved phenomenon were elucidated us.ng optical and micros.opy *** optimizing the growth parameters.high yields.of s.CNT TCFs.exhibiting a cons.derably low s.eet res.s.ance of 57Ω/s. at 90%trans.ittance were *** competitive optoelectronic performance is.mainly attributable to long s.CNT bundles.mean length is.41.4μm)in the ***,a chirality map determined by electron diffraction dis.lays.a bimodal dis.ribution of chiral angles.divided at 15°,which is.clos. to both armchair and zigzag *** s.udy paved the way towards.s.aled-up production of s.CNTs.for the fabrication of high-performance TCFs.for indus.rial applications.

关键词： s.ngle-walled carbon nanotubes trans.arent conducting films toluene floating catalys. chemical vapor depos.tion

Plant Cell Wall Matrix Polys.ccharide Bios.nthes.s

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Molecular Plant 2009年第5期2卷 840-850页

作者： Ajay Pal s. s.ndhu Gurs.arn s. Randhawa Kanwarpal s. Dhugga Crop Genetics.Res.arch and Development Pioneer Hi-Bred International Inc. A DuPont Company 7300 NW 62nd Avenue Johnston IA 50131 USA Department of Biotechnology Indian Institute of Technology Roorkee-247667 Uttarakhand'India

The wall of an expanding plant cell cons.s.s.primarily of cellulos. microfibrils.embedded in a matrix of hemicellulos.c and pectic polys.ccharides.along with s.all amounts.of s.ructural and enzymatic proteins. Matrix polys.ccharides.are s.nthes.zed in the Golgi and exported to the cell wall by exocytos.s. where they intercalate among cellulos. microfibrils. which are made at the plas.a membrane and directly depos.ted into the cell wall. Involvement of Golgi glucan s.nthes.s.in auxin-induced cell expans.on has.long been recognized; however, only recently have the genes.corres.onding to glucan s.nthas.s.been identified. Biochemical purification was.uns.cces.ful becaus. of the labile nature and very low abundance of thes. enzymes. Mutational genetics.als. proved fruitles.. Expres.ion of candidate genes.identified through gene expres.ion profiling or comparative genomics.in heterologous.s.s.ems.followed by functional characterization has.been relatively s.cces.ful. s.veral genes.from the cellulos. s.nthas.-like （Cs.） family have been found to be involved in the s.nthes.s.of various.hemicellulos.c glycans. The us.fulnes. of this.approach, however, is.limited to thos. enzymes.that probably do not form complexes.cons.s.ing of unrelated proteins. Nonconventional approaches.will continue to incrementally unravel the mechanis.s.of Golgi polys.ccharide bios.nthes.s.

关键词： Biofuels cell wall Cs. Golgi hemicellulos. membrane biochemis.ry.

PRECIPITATION OF s.PHAs. IN AN 8090 Al-Li ALLOY

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Trans.ctions.of Nonferrous.Metals.s.ciety of China 1992年第3期2卷 77-82页

作者： Zheng Ziqiao Hori s. Central s.uth Univers.ty of Technology Changsha 410083China Os.ka Univers.ty Japan

The precipitation of s.phas. in an 8090 Al-Li alloy under various.aging conditions.was.inves.igated by trans.is.ion electron *** res.lts.s.ow that a s.all quantity of s.precipitates.precipitated on the grain and s.bgrain boundaries.for the s.ecimens.aged to peak hardnes. during s.ngle *** working prior to aging promoted the wides.read precipitation of s.phas. becaus. of increas.ng dis.ocation *** natural aging the vacancies.bound by Li atoms.were releas.d and formed dis.ocation loops.s.precipitates.preferentially nucleated and grew on the dis.ocation loops.

关键词： Al-Lialloys s.phas. aging precipitation

A parametric s.udy of the hydrodynamic roughnes. produced by a wall coating layer of heavy oil

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Petroleum s.ience 2017年第1期14卷 155-166页

作者： s. Rus.d R. s. s.nders Department of Chemical and Materials.Engineering University of Alberta Edmonton AB Canada

In water-lubricated pipeline trans.ortation of heavy oil and bitumen, a thin oil film typically coats.the pipe wall. A detailed s.udy of the hydrodynamic effects.of this.fouling layer is.critical to the des.gn and operation of oil-water pipelines. as.it can increas. the pipeline pres.ure los. （and pumping power requirements. by 15 times.or more. In this.s.udy, a parametric inves.igation of the hydrodynamic effects.caus.d by the wall coating of vis.ous.oil was.conducted. A cus.om-built rectangular flow cell was.us.d. A validated CFD-bas.d procedure was.us.d to determine the hydrodynamic roughnes. from the meas.red pres.ure los.es. A s.milar procedure was.followed for a s.t of pipe loop tes.s. The effects.of the thicknes. of the oil coating layer, the oil vis.os.ty, and water flow rate on the hydrodynamic roughnes. were evaluated. Oil vis.os.ties.from 3 to 21300 Pa s.were tes.ed. The res.lts.s.ow that the equivalent hydrodynamic roughnes. produced by a wall coating layer of vis.ous.oil is.dependent on the coating thicknes. but es.entially independent of oil vis.os.ty. A new correlation was.developed us.ng thes. data to predict the hydrodynamic roughnes. for flow conditions.in which a vis.ous.oil coating is.produced on the pipe wall.

关键词： Pipeline trans.ortation - Heavy oil Wallfouling Lubricated pipe flow CFD s.mulation