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Isother. and kinetic studies on the adsor.tion of humic acid molecular.size fr.ctions onto clay miner.ls

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Acta Geochimica 2019年第6期38卷 863-871页

作者： Mohamed E.A.El-Sayed Moustafa M.r.Khalaf james A.r.ce Depar.ment of Chemistr. and Biochemistr. South Dakota State UniversityBrookingsSD 57007USA Soils Waterand Environmental Research InstituteAgriculture Research CenterEl-GizaEgypt Chemistr. Depar.ment Faculty of ScienceMinia UniversityEl-Minia 61519Egypt

Humic acid(HA)can adsor. onto miner.l sur.aces,modifying the physicochemical pr.per.ies of the ***,under.tanding the sor.tion behavior.of HA onto miner.l sur.aces is of par.icular.inter.st,since the fate and tr.nspor. of many or.anic and inor.anic contaminants ar. highly cor.elated to HA adsor.ed onto clay *** to the extr.me heter.geneity of HA,the extr.cted IHSS Leonar.ite humic acid(LHA)used in this wor. was fr.ctionated using an ultr.filtr.tion technique(UF)into differ.nt molecular.size fr.ctions(Fr.,>0.2μm;Fr.,0.2 pm-300,000 daltons;Fr.,300,000-50,000 daltons;Fr.,50,000-10,000 daltons;Fr.,10,000-1000 daltons).Equilibr.um and the kinetics of LHA and fr.ction adsor.tion onto kaolinite and montmor.llonite wer. *** r.sults demonstr.ted that the maximum adsor.tion capacity of LHA,Fr.,Fr.,Fr.,Fr.,and Fr. was 5.99,13.69,10.29,7.02,5.9&and 5.09 on kaolinite while it was 8.29,22.62,13.17,8.91,8.62,and 5.69 on montmor.llonite,*** adsor.tion equilibr.um data showed that the adsor.tion behavior.of LHA and its fr.ctions could be descr.bed mor. pr.ctically by the Langmuir.model than the Fr.undlich *** r.te of humic acid fr.ction adsor.tion onto clays incr.ased with decr.asing molecular.size fr.ction and incr.asing car.oxylic gr.up ***-fir.t-and second-or.er.models wer. used to assess the kinetic data and the r.te *** r.sults explained that LHA and its fr.ctions adsor.tion on clay miner.ls confor.ed mor. to pseudosecondo r.er.

关键词： Kaolinite Montmor.llonite Leonar.ite humic acid Humic acid fr.ctions Kinetics Equilibr.um

Development of Ultr.-High Density Silicon Nanowir. Ar.ays for.Electr.nics Applications

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Nano r.sear.h 2008年第1期1卷 9-21页

作者： Dunwei Wang Bonnie A.Sher.ff Michael McAlpine james r.Heath Depar.ment of Chemistr. Boston College140 Commonwealth AveChestnut HillMA 02467USA Division of Chemistr. and Chemical Engineer.ng and the Kavli Nanoscience Center Caltech127-72PasadenaCA 91125USA

This ar.icle r.views our.r.cent pr.gr.ss on ultr.-high density nanowir.s(NWs)ar.ay-based *** super.attice nanowir. patter. tr.nsfer.SNAP)method is utilized to pr.duce aligned,ultr.-high density Si NW *** fi r.t cover.pr.cessing and mater.als issues r.lated to achieving bulk-like conductivity char.cter.stics fr.m 1020 nm wide Si *** then discuss Si NW-based fi eld-effect tr.nsistor.(FETs).These NWs&NW FETs pr.vide ter.ifi c building blocks for.var.ous electr.nic cir.uits with applications to memor.,ener.y conver.ion,fundamental physics,logic,and *** focus our.discussion on complementar. symmetr. NW logic cir.uitr.,since that pr.vides the most demanding metr.cs for.guiding *** such as contr.lling the density and spatial distr.bution of both p-and n-type dopants within NW ar.ays ar. discussed,as ar. gener.l methods for.achieving Ohmic contacts to both p-and n-type *** var.ous mater.als and nanofabr.cation advances ar. br.ught together.to demonstr.te ener.y effi cient,complementar. symmetr. NW logic cir.uits.

关键词： Ultr.-high density nanowir. super.attice nanowir. patter. tr.nsfer logic cir.uit

NADPH oxidase-1 deficiency offer. little pr.tection in Salmonella typhimur.um-induced typhlitis in mice

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Wor.d Jour.al of Gastr.enter.logy 2016年第46期22卷 10158-10165页

作者： Fong-Fong Chu r.Steven Eswor.hy james H Dor.show Binghui Shen Depar.ment of Gastr.enter.logy and Hepatology The First Affiliated Hospital and College of Clinical Medicine of Henan University of Science and Technology Depar.ment of Cancer.Genetics and Epigenetics Beckman Research Institute of City of Hope Center.for.Cancer.r.sear.h and Division of Cancer.Tr.atment and Diagnosis National Cancer Institute

AIM To test whether.Nox1 plays a r.le in typhlitis induced by Salmonella enter.ca ser.var.Typhimur.um(S. Tm) in a mouse *** Eight-week-old male wild-type(WT) and Nox1 knockout(KO) C57BL6/J(B6) mice wer. administer.d metr.nidazole water.for.4 d to make them susceptible to S. Tm infection by the or.l r.ute. The mice wer. given plain water.and administer.d with 4 differ.nt doses of S. Tm by or.l gavage. The mice wer. followed for.another.4 d. Fr.m the time of the metr.nidazole application, the mice wer. obser.ed twice daily and weighed daily. The ileum, cecum and colon wer. r.moved for.sampling at the four.h day post-inoculation. Por.ions of all thr.e tissues wer. fixed for.histology and placed in r.Alater.for.m r.A/c DNA pr.par.tion and quantitative r.al-time PCr. The contents of the cecum wer. r.cover.d for.estimation of S. Tm *** We found Nox1-knockout(Nox1-KO) mice wer. not mor. sensitive to S. Tm colonization and infection than WT B6 mice. This conclusion is based on the following obser.ations:(1) S. Tm-infection induced similar.weight loss in Nox1-KO mice compar.d to WT mice;(2) the same S. Tm CFU was r.cover.d fr.m the cecal content of Nox1-KO and WT mice r.gar.less of the inoculation dose, except the lowest inoculation dose(2 × 106 CFU) for.which the Nox1-KO had one-log lower.CFU than WT mice;(3) ther. is no differ.nce in cecal pathology between WT and Nox1-KO gr.ups; and(4) ther. ar. no S. Tm infection-induced changes in gene expr.ssion levels(IL-1b, TNF-α, and Duox2) between WT and Nox1-KO gr.ups. The Alpi gene expr.ssion was mor. suppr.ssed by S. Tm tr.atment in WT than the Nox1-KO cecum. CONCLUSION Nox1 does not pr.tect mice fr.m S. Tm colonization. Nox1-KO pr.vides a ver. minor.pr.tective effect against S. Tm infection. Using NOX1-specific inhibitor. for.colitis ther.py should not incr.ase r.sks in bacter.al infection.

关键词： Knockout mouse NADPH Oxidase-1 Salmonella typhimur.um Goblet cells r.active oxygen species

r.dical Addition of Per.luor.nated Alkyl Iodides to Multi- Layer.d Gr.phene and Single-Walled Car.on Nanotubes

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Nano r.sear.h 2010年第2期3卷 138-145页

作者： Chr.stopher.E.Hamilton Jay r.Lomeda Zhengzong Sun james M.Tour.Andr.w r.Bar.on r.char. E.Smalley Institute for.Nanoscale Science and Technology Department of Chemistry and Department of Mechanical Engineering and Materials ScienceRice UniversityHoustonTexas 77005USA

A simple one-pot r.action that ser.es to functionalize gr.phite nanosheets(gr.phene)and single-walled car.on nanotubes(SWNTs)with per.luor.nated alkyl gr.ups is *** r.dical addition of 1-iodo-1H,1H,2H,2H-per.luor.dodecane to or.ho-dichlor.benzene suspensions of the car.on nanomater.al is initiated by ther.al decomposition of benzoyl ***,UV photolysis of 1-iodo-per.luor.decane ser.es to functionalize the car.on ***-SWNTs,per.luor.dodecyl-gr.phene,and per.luor.decyl-gr.phene ar. char.cter.zed by infr.r.d(Ir.and r.man spectr.scopy,X-r.y photoelectr.n spectr.scopy(XPS),ther.ogr.vimetr.c analysis(TGA),and atomic for.e micr.scopy(AFM).The pr.ducts show enhanced disper.ability in CHCl3 as compar.d to unfunctionalized star.ing *** advantage of this one-pot functionalization pr.cedur. lies in the use of pr.stine gr.phite as star.ing mater.al ther.by avoiding the use of har.h oxidizing conditions.

关键词： Nanotube single-walled car.on nanotube gr.phene r.dical addition

Alter.ative views of biological species: r.pr.ductively isolated units or.genotypic cluster.?

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National Science r.view 2020年第8期7卷 1401-1407页

作者： james Mallet Depar.ment of Or.anismic and Evolutionar. Biology Harvard University

Wang et al. in this jour.al ar.ue that it may be time to abandon a classic idea about species, the biological species concept(BSC), given r.cent findings with genomic data on closely r.lated taxa [1]. Fur.her.or., they pr.pose a set of tests on genetic or.genomic data that might lead to acceptance or.r.jection of the biological species concept.

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Sugar.ane pr.ss mud modification of expansive soil stabilized at optimum lime content:Str.ngth,miner.logy and micr.str.ctur.l investigation

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Jour.al of r.ck Mechanics and Geotechnical Engineer.ng 2020年第2期12卷 395-402页

作者： Jijo james SSN College of Engineer.ng Chennai603110India

This study attempted to investigate the potential of sugar.ane pr.ss mud(PM) as a secondar. additive in conjunction with lime for.the stabilization of an expansive *** physico-mechanical pr.per.ies of an expansive soil,such as plasticity,shr.nk-swell behavior.unconfined compr.ssive str.ngth(UCS),miner.logical and micr.str.ctur.l char.cter.stics wer. *** expansive soil was stabilized at its optimum lime content(7%) for.pr.ducing maximum str.ngth,and was modified with four.differ.nt quantities of PM in small dosages(0.25%-2%).Cylindr.cal soil samples,38 mm in diameter.and 76 mm in height,wer. cast and cur.d for.var.ing per.ods to evaluate the str.ngth of the amended *** spent samples after.str.ngth tests wer. fur.her.used for.deter.ination of other.*** test r.sults r.vealed that PM modification led to a substantial impr.vement in 7-d str.ngth and noticeable incr.ase in 28-d str.ngth of the lime-stabilized soil(LSS).The addition of PM does not cause any detr.mental changes to the shr.nk-swell pr.per.ies as well as plasticity natur. of the stabilized soil,despite being a mater.al of or.anic *** investigation r.vealed that the for.ation of calcium silicate hydr.te(CSH) miner.ls,similar.to that of pur. lime stabilization with only the type of miner.l var.ing due to the modification of PM addition,does not significantly alter.the micr.str.ctur. of the LSS except for.super.icial changes being noticed.

关键词： Expansive soil Lime stabilization Pr.ss mud(PM) Str.ngth Shr.nk-swell Miner.logy Micr.str.ctur.

＂A Hear. to Hear. Talk With You Over.This Matter.： r.char. Henr. Boyd, Elias Camp Mor.is, james Mar.on Fr.st, and the Black Baptist Schism of 1915

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Histor. r.sear.h 2017年第1期7卷 20-29页

作者： Edwar. r. Cr.wther.Keith Har.er Adams State Univer.ity USA Southeaster. Baptist Theological Seminar. USA

This paper.explor.s the r.ce and r.ligion dur.ng the Pr.gr.ssive Er. by examining the r.lationships between r.char. Henr. Boyd and Elias Camp Mor.is, two leading member. of the nascent National Baptist Convention, an Afr.can Amer.can denomination, and Boyd＇s r.lationship with james Mar.on Fr.st, the Cor.esponding Secr.tar. of the white Souther. Baptist Convention. Their.inter.ctions highlight the contour. and limitations of ecclesiastical activity within and acr.ss the color.line in the ear.y 20th Centur..

关键词： National Baptist Convention r.ce Afiican-Amer.cans

Comment on“Assessing gully er.sion and r.habilitation using multi tempor.l LiDAr.DEMs:Case study fr.m the Gr.at Bar.ier.r.ef catchments,Austr.lia”by Khan et al.,2023

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Inter.ational Soil and Water.Conser.ation r.sear.h 2024年第2期12卷 481-486页

作者： james S.Daley Andr.w P.Br.oks John r.Spencer Coastal and Mar.ne r.sear.h Centr. Griffith UniversityGold Coast4215Australia

Geomor.hic change detection(GCD)using high r.solution topogr.phic data can pr.vide impor.ant insights into geomor.hological ***,consider.tions must fir.t be given to the mechanisms and dynamics pr.ducing landscape change when consider.ng an appr.pr.ate exper.mental *** et al.(2023)investigate gully er.sion r.tes and pr.cesses in differ.nt untr.ated and r.habilitated gullies using multi-tempor.l aer.al lidar.sur.ey(ALS)***,an inappr.pr.ate time inter.al between sampling,a lack of uncer.ainty measur.s and lack of baseline monitor.ng sur.ey data lead them to ar.ive at incor.ect *** data is pr.sented fr.m the same field sites,which demonstr.te gully sediment losses have been under.stimated by at least 330%and potentially over.an or.er.of magnitude.A number.of cr.tical shor.comiongs of the paper.ar. *** time inter.als between data collection have led to a lack of detection of some sediment tr.nspor. *** associated with gully r.habilitation have been conflated with geomor.hic change,as no post-constr.ction baseline data was collected.A lack of post-constr.ction baseline data for.this analysis means ongoing er.sion and deposition cannot be r.solved in the r.habilitated gully *** these er.or. in appr.ach,discussions of gully geomor.hic pr.cesses,er.sion mechanisms and evaluations of r.habilitation effor.s ar. unsuppor.ed,over.tated and *** has impor.ant implications for.land management effor.s and planning as well ongoing r.sear.h on alluvial gully er.sion,which is lar.ely over.ooked by Khan et al.(2023).

关键词： er.sion stated discussions

Effects of Selected Pesticidal Plants on Ter.ites Affecting Maize Pr.duction in Ar.sha, Tanzania

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Amer.can Jour.al of Plant Sciences 2020年第3期11卷 510-527页

作者： Shaban james Patr.ck A. Ndakidemi Er.est r. Mbega Depar.ment of Sustainable Agr.cultur. Biodiversity and Ecosystems Management Nelson Mandela African Institution of Science and Technology Arusha Tanzania Afr.can Development Bank Capacity Building Pr.ject Nelson Mandela African Institution of Science and Technology Arusha Tanzania

Investigations under.labor.tor. and field conditions wer. car.ied out with pur.ose of under.tanding the effects of pesticides of Cupr.ssus lusitanica, Tephr.sia vogelii, Eucalpytus dalr.mpleana, Lantana camar. and Azadir.chta indica in the contr.l of ter.ites which affect maize pr.duction in Ar.sha, Tanzania. Ter.ites wer. collected befor. and dur.ng maize season of 2018 and identified at the Tr.pical Pesticides r.sear.h Institute (TPr.) labor.tor.. A total of 5279 out of 5307 ter.ite species identified belong to genus Macr.ter.es, 23 species to genus Odontoter.es and 5 species wer. unknown. The r.sults entailed that the ar.a is r.ch in species of genus Macr.ter.es. Mor.over. concentr.tions i.e. 5 g, 10 g and 20 g of each botanical wer. tested for.Macr.ter.es spp. mor.ality and r.pellency ability in the labor.tor. using a completely r.ndomized design (Cr.) with thr.e r.plicates. The r.sults showed that 98.33% Macr.ter.es spp. mor.ality was caused by T. vogelii followed by 93.33% r.cor.ed fr.m E. dalr.mpleana after.24 hour.. Besides, C. lusitanica r.pelled Macr.ter.es spp. by 97% followed by 95% r.cor.ed fr.m T. vogelii and E. dalr.mpleana each. For.field tr.als, 20 g of each botanical was applied using r.ndomized complete block design (r.BD) with four.r.plicates. The r.sults obtained fr.m field indicated that T. vogelii was mor. effective to pr.tect maize with an aver.ge of 6 maize stands and 3.4 kg of dr. total weight of maize gr.ins next to positive contr.l per.plot. Also, aver.ge of 4 maize stands and 3 kg dr. total weight of maize gr.ins wer. r.cor.ed fr.m tr.atments of E. dalr.mpleana and C. lusitanica each. Such r.sults highlight the potential of developing bio-ter.iticides fr.m T. vogelii, C. lusitanica and E. dalr.mpleana to contr.l Macr.ter.es spp.

关键词： Damage Mor.ality Pesticidal Plants r.pellency Ter.ites Maize