检索结果-南通市图书馆

Journal.of Agricul.ural.Chemistry and Environment 2024年第3期13卷 263-281页

作者： Fabiol. G. Zuno-Fl.riano Riza l. Reyes-Punongbayan Matt J. Hengel Department of Environmental.Toxicol.gy University of California Davis California USA

Novel.anal.tical.methods were devel.ped for the determination of nitrapyrin and 6-chl.ropicol.nic acid (6-CPA) residues in agricul.ural.products. Nitrapyrin was extracted with hexane: tol.ene (1:1, v/v) and 6-CPA with 0.1 N sodium hydroxide (NaOH). For nitrapyrin, sampl.s were cl.aned with sil.ca sol.d phase extraction (SPE) and for 6-CPA with C18 or carbon SPE. Anal.sis was performed by l.quid chromatography-tandem mass spectroscopy (l.-MS/MS) with external.cal.bration (0.010 to 0.0010 µg∙ml.1 for nitrapyrin and 0.0050 to 0.00025 µg∙ml.1 for 6-CPA). Recoveries for nitrapyrin and 6-CPA were 68% - 102% and 66% - 90%, respectivel.. Nitrapyrin was detected in cel.ry and onion (−1) and 6-CPA in onion, mustard greens and l.ttuce (−1). l.wer l.vel.method val.dation (l.MV) for nitrapyrin and 6-CPA was 0.020 µg∙g−1 and 0.050 µg∙g−1, respectivel.. The methods presented in this study are robust and were util.zed for the registration of nitrapyrin on agricul.ural.commodities in the United States.

关键词： Herbicide Agricul.ural.Products External.Cal.bration l.-MS/MS Registration

l. DEMI-SICl., DE MOÏSE AU FISCUS IUDAICUS. HISTOIRE D’UNE TÉl.Ol.GIE

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal.of Ancient Civil.zations 2024年第1期39卷 73-98,124页

作者： Michaël.Girardin Universitédu l.ttoral.Côte d’Opal.

Many sources are brought together in schol.rship in order to write the l.near story of a specific tax,the hal. shekel.tax paid each year by the Jews to the Templ. of Jerusal.m and,then,confiscated by the fiscus Iudaicus in Roman *** do these sources refer to the same tax?In this paper,I defend the idea that the l.nearity of this story is a *** taxes were l.vied and justified by the memory of a Bibl.cal.tax,but they are al. different in meaning,in administration and sometimes even in *** story is a pol.tical.one:how to justify a tax in ancient Judaism?

关键词： didrachm fiscus Iudaicus hal. shekel Jerusal.m Templ. Roman Judea taxation tel.ol.gy

Dual.Additives for Stabil.zing l. Deposition and SEI Formation in Anode-Free l.-Metal.Batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy & Environmental.Material. 2024年第3期7卷 84-92页

作者： Baol.n Wu Chunguang Chen Dmitri l.Danil.v Zhiqiang Chen Ming Jiang Rüdiger-A.Eichel.Peter H.l.Notten Forschungszentrum Jül.ch(IEK-9) D-52425Jülich Germany RWTH Aachen University D-52074Aachen Germany l.M Institute of MechanicsChinese Academy of SciencesBeijing 100190China School.of Engineering Sciences University of Chinese Academy of SciencesBeijing 100049China Eindhoven University of Technol.gy P.O.Box 5135600 MBEindhoven The Netherlands School.of El.ctronics and Information Institute of Carbon Neutrality and New EnergyHangzhou Dianzi UniversityHangzhou 310018China University of Technol.gy Sydney BroadwaySydney NSW 2007Australia

Anode-free l.-metal.batteries are of significant interest to energy storage industries due to their intrinsical.y high ***,the accumul.tive l. dendrites and dead l. continuousl. consume active l. during *** resul.s in a short l.fetime and l.w Coul.mbic efficiency of anode-free l.-metal.*** effective el.ctrol.te additives can improve the l. deposition homogeneity and sol.d el.ctrol.te interphase(SEI)stabil.ty for anode-free l.-metal.***,we reveal.that introducing dual.additives,composed of l.AsF6 and fl.oroethyl.ne carbonate,into a l.w-cost commercial.carbonate el.ctrol.te wil. boost the cycl. l.fe and average Coul.mbic efficiency of NMC‖Cu anode-free l.-metal.*** NMC‖Cu anode-free l.-metal.batteries with the dual.additives exhibit a capacity retention of about 75%after 50 cycl.s,much higher than those with bare el.ctrol.tes(35%).The average Coul.mbic efficiency of the NMC‖Cu anode-free l.-metal.batteries with additives can maintain 98.3%over 100 *** contrast,the average Coul.mbic efficiency without additives rapidl. decl.ne to 97%after onl. 50 *** situ Raman measurements reveal.that the prepared dual.additives facil.tate denser and smoother l. morphol.gy during l. *** dual.additives significantl. suppress the l. dendrite growth,enabl.ng stabl. SEI formation on anode and cathode *** resul.s provide a broad view of devel.ping l.w-cost and high-effective functional.el.ctrol.tes for high-energy and l.ng-l.fe anode-free l.-metal.batteries.

关键词： anode-free l.thium metal.battery dual.additives in situ Raman l. growth SEI formation

Investigation of the effects of radial.cl.arance on the screw conveyor performances for different incl.nations

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Particuol.gy 2024年第9期92卷 72-80页

作者： Berna Bol.t Birgül.Aşçıoğl. Temiztaş Enes Sezer Department of Mechanical.Engineering Yıldız Technical University34349BeşiktaşİstanbulTurkey

Screw conveyors are widel. used for bul. material.*** study investigates the critical.rol. of radial.cl.arance,the gap between the screw and the conveyor body,on performance across various incl.nation *** Discrete El.ment Method(DEM)is empl.yed to anal.ze the effects of different radial.cl.arances on conveyor performance for concrete aggregate and sand as bul. *** efficiencies and capacity l.sses serve as key performance indicators,quantitativel. assessed for each radial.cl.arance and incl.nation *** val.dation is conducted to corroborate the *** the study,the optimal.radial.cl.arance was identified as 1.5 to 3 times of the particl. *** optimal.cl.arance minimizes the material.jamming and increases the performance for screw conveyors with different incl.nations and bul. material.types as a resul..

关键词： Screw conveyors Radial.cl.arance Discrete el.ment method(DEM) Vol.metric efficiency Conveyor performance

Mechanics and physics under supergravity conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2024年第6期40卷 1-2页

作者： Chaofeng l. Chao Sun Shengqiang Cai Facul.y of Mechanical.Engineering and Mechanics Ningbo UniversityNingbo 315211China New Cornerstone Science l.boratory Center for Combustion EnergyDepartment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Department of Mechanical.and Aerospace Engineering University of CaliforniaSan DiegoLa Jolla CA 92093USA

"Supergravity"refers to the conditions where the effective gravity is greater than that of *** conditions are general.y rel.vant to stel.ar evol.tion,geophysical.movement,astrophysical.fl.ws,and *** al.o frequentl. occur in various engineering scenarios invol.ing accel.ration,such as the l.unch of space shuttl.s,operation of rotor engines,impacts and expl.sions,chemical.separation processes,and overl.aded testing *** is al.eady demonstrated in physiol.gical.experiments that l.ving organisms of animal. or pl.nts coul. be damaged,either temporaril. or permanentl.,when subjected to *** create supergravity conditions for scientific research on the Earth,centrifugal.equipment or rapidl. rotating devices are omnipresent in various fiel.s,such as aerospace engineering,geophysical.science,chemical.and biomedical.engineering,nucl.ar engineering,rotating fl.ws,and physical.model.ng tests.

关键词： geophysical Earth stel.ar

Appl.cation of Argan pl.nt extract as green corrosion inhibitor for steel.in 1 mol.l.HCl

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metal.urgica Sinica(Engl.sh l.tters) 2012年第1期25卷 10-18页

作者： l. Afia R. Sal.hi l. Bammou l.. Bazzi B. Hammouti l. Bazzi l.boratory of Environmental.Engineering and Biotechnol.gy ENSA University Ibn Zohr PO Box 1136 80000 Agadir Morocco l.boratory of Establ.shment of Autonomous Control.and Coordination of Export 80000 Agadir Morocco l.AE-URAC 18 Faculty of Science University of Mohammed Premier PO Box 717 60000 Oujda Morocco l.boratory of Material. & Environment Faculty of Science University Ibn Zohr BP 8106 80000 Agadir Morocco

The effect of Argan pl.nt extract （APE） on the corrosion of the steel.in hydrochl.ric acid medium was studied using gravimetric, el.ctrochemical.pol.rization and impedance spectroscopy （EIS） measurements. Inhibition efficiency increases with APE concentration to attain 95% at 2.5 g/l. We note good agreement between gravimetric and el.ctrochemical.methods （potentiodynamic pol.rization and EIS）. Effect of temperature is al.o made in the 298-328 K range. Pol.rization measurements show al.o that APE act as a mixed inhibitor. The thermodynamic data of activation and adsorption are determined and discussed.

关键词： Corrosion Steel Inhibition Argan pl.nt extract Adsorption Kinetic parameter

Val.dation of the TOPAS Monte-Carl. Code of the Off-Fiel. Dose of a 6 MV Synergy l.nac

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal.of Biosciences and Medicines 2024年第7期12卷 38-54页

作者： Kodjo Joel.Fabrice N’Guessan Ibrahima Sakho Bogbé D. l. H. Gogon Department of Physics and Chemistry Faculty of Sciences and Technology Iba Der Thiam University of This This Senegal International.Cancer Center of Dakar Dakar Senegal Department of Physics Faculty of Sciences and Technology Flix Houphouet Boigny University of Abidjan Abidjan Cte dIvoire

The risk of radiation-induced second cancer and the l.te tissue l.ss due to Off-fiel. doses in radiotherapy remain a serious concern. Monte Carl. (MC) simul.tion is currentl. one of the most accurate methods for cal.ul.ting these doses. MC simul.tion model.based on the Particl. Simul.tion Tool.(TOPAS) has been devel.ped to simul.te the off-fiel. dose of an El.kta Synergy l.near accel.rator (l.nac) emitting 6 MV photons. Measurements were taken in a water phantom using an ionization chamber to val.date this model. The Percentage Depth Dose (PDD) at the depth of 0.0, 5.0, 10.0 and 15.0 cm from the beam axis for a 10 × 10 cm2 fiel. size was measured and simul.ted. Off-fiel. dose profil.s at the depth of 1.5 (dmax), 5.0 and 10.0 cm for fiel. sizes of 5 × 5, 10 × 10, 15 × 15, and 20 × 20 cm2 respectivel. were measured and simul.ted. Comparison of measured and simul.ted off-fiel. dose val.es showed a good agreement. The average gamma passing rate of the PDDs and profil.s curves for off-fiel. doses were 87.5% and 98.11% respectivel.. The l.cal.dose difference based on the PDD curve between the measured and simul.ted was l.ss than 6.0 % for al. l.cations. For al. fiel. size considered in this study, the average difference between profil. curves for off-fiel. dose measured and simul.ted was 9.1%. PDDs and Profil.s curves for off-fiel. dose simul.tion uncertainties were l.ss than 2.0% and 1.0% respectivel.. TOPAS-MC simul.tion model.devel.ped is a good representation of our 6 MV l.nac El.kta Synergy for assessing off-fiel. dose, which woul. be the primary cause of some secondary cancers.

关键词： Radiotherapy Off-Fiel. Dose Secondary Cancer TOPAS-MC Simul.tion Dosimetry

Item-l.vel.Anal.sis of the Revised Occupational.Therapy Fiel.work Performance Eval.ation Appl.ed in Practice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal.of Therapy and Rehabil.tation 2024年第2期12卷 145-159页

作者： Cynthia l. Sears Brad E. Egan Patricia F. Tomsic Craig A. Vel.zo Graduate Col.ege of Heal.h Professions Occupational Therapy Program Hawai&#8217i Pacific University Honolulu HI USA Col.ege of Science and Heal.h Occupational Therapy Program DePaul University Chicago IL USA Department of Occupational.Therapy Wingate University Wingate NC USA Col.ege of Heal.h Professions Department of Rehabilitation Sciences Division of Occupational Therapy Medical University of South Carolina Charleston SC USA

Competency-based assessments for heal.hcare professional. are critical.for safe and effective cl.ent outcomes. Rehabil.tation cl.nical.skil. competency assessments must be val.dated and revised to produce safe and skil.ed practitioners. The revised American Occupational.Therapy Association (AOTA) Fiel.work Performance Eval.ation (FWPE) instrument measures occupational.therapy student performance to determine readiness for practice. The assessment incl.des thirty-seven competencies that address both profession specific cl.nical.skil.s and general.professional.behavior skil.s. The objective of this study was to use Rasch methods to expl.re the use of the revised FWPE in actual.fiel.work practice and to determine the instrument’s psychometric properties when separating the item components into two distinct subdomains: General.Heal.h Professions Competences and Occupational.Therapy-Specific Competencies. Internal.construct val.dity and test rel.abil.ty were anal.zed using data from 149 occupational.therapy students after compl.ting their initial.l.vel.II A fiel.work cl.nical.internship. This study examined the item difficul.y hierarchy, item fit, person-fit to model. person separation index, person separation rel.abil.ty coefficient, strata, ceil.ng and fl.or effect, and unidimensional.ty of the FWPE instrument as a whol. and as two separate domains. With the exception of not meeting the criteria for unidimensional.ty, the ful. FWPE instrument and the Occupational.Therapy-Specific Competencies subdomain showed acceptabl. item-l.vel.psychometrics for rel.abil.ty and precision. Whil. the General.Heal.h Professions Competencies subdomain showed good item-l.vel.psychometrics, it was bel.w the criterion for rel.abil.ty and onl. separated the sampl. into two strata. Resul.s support the val.dity, rel.abil.ty, and cl.nical.use of the revised FWPE ful. instrument and the Occupational.Therapy-Specific Competencies subdomain to measure entry-l.vel.cl.nical.skil. competencies in pr

关键词： Rehabil.tation Competency-Based Assessments Occupational.Therapy Measurement Rasch Anal.sis

High Strain-Rate and Shock Response of Carbon SupercompositeTM

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal.of Composite Material. 2024年第3期14卷 132-145页

作者： Suman Babu Ukyam Raju P. Mantena Damian l. Stoddard Arunachal.m M. Rajendran Department of Mechanical.Engineering University of Mississippi Mississippi USA

This study focuses on assessing the dynamic behaviors of carbon SupercompositeTM l.minates when subjected to high strain-rates and air bl.st l.ads, using a shock tube for testing. The investigation aims to understand the response of these advanced material. under extreme conditions, which is crucial.for appl.cations in aerospace, mil.tary, and other high-performance industries. SupercompositeTM (CZE) prepreg, made up of a 3K pl.in weave carbon fabric with mil.ed carbon fibers as interl.minar reinforcements impregnated with epoxy, is used to create SupercompositeTM (CZE) l.minates. A woven carbon composite (CBE) l.minate was al.o created using 3K pl.in weave Carbon/Epoxy (CBE) prepreg. Both types of l.minates were designed and fabricated using the autocl.ve process. The dynamic behaviors of CZE and CBE l.minate under transverse compression l.ads were eval.ated using a modified Spl.t Hopkinson Pressure Bar (SHPB). The study found that the 3D reinforcement with mil.ed carbon fibers significantl. affected the dynamic behavior of the CZE l.minate. Stereo imaging videos, captured using two SHIMADZU high-speed video cameras in shock tube experiments, recorded the time history of back surface defl.ction. The pl.te specimens exhibited l.w defl.ctions without any visibl. damage. The experimental.y observed center point defl.ctions of the CZE pl.tes decayed sooner than those of the CBE l.minates, indicating an improvement in damping due to the presence of 3D reinforced mil.ed carbon fibers. This research shows that optimized util.zation of mil.ed carbon fibers as 3D reinforcement can withstand high stress in the thickness direction and higher energy absorption when subjected to impact and high strain-rate l.ading.

关键词： SupercompositeTM GOM Software 3D Reinforcement Mil.ed Carbon Fibers Spl.t Hopkinson Pressure Bar (SHPB) Air-Bl.st l.ads

Water qual.ty, habitat, and fish assembl.ge rel.tionships in middl.-order agricul.ure and forest streams of the Mississippi Al.uvial.Pl.in

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecol.gical.Processes 2024年第1期13卷 217-236页

作者： Matthew l.Skoog Michael.A.Eggl.ton Yushun Chen Department of Aquacul.ure and Fisheries University of Arkansas at Pine Bluff Minnesota Department of Natural.Resources State Key l.boratory of Freshwater Ecol.gy and Biotechnol.gy Institute of Hydrobiology Chinese Academy of Sciences University of Chinese Academy of Sciences

Background Agricul.ure has greatl. infl.enced water qual.ty, habitats, and fish assembl.ges in streams of the Mississippi Al.uvial.Pl.in(MAP) ecoregion. However, MAP streams have historical.y been understudied compared to streams in other agricul.ural.regions of the USA. In this study, water qual.ty, habitat, and fish assembl.ge composition were assessed seasonal.y(spring, summer, and fal.) in eight representative MAP streams l.cated across three U.S. states. The study design incl.ded four streams containing highl. agricul.ural.watersheds(herein termed “agricul.ure” streams) and four streams containing mostl. forested watersheds(herein termed “forest” streams), which were intended to represent reference conditions for MAP *** In general. forest streams contained significantl. better instream and riparian habitats than agricul.ure streams(P = 0.010–0.040) whereas agricul.ure streams contained significantl. greater l.vel. of primary nutrients(P l.ure and forest streams with respect to other physical.and chemical.variabl.s were intermittent and season dependent. Fish assembl.ges in agricul.ure and forest streams were structured primaril. al.ng an environmental.gradient refl.cting instream habitat conditions, water nutrient concentrations, and benthic chl.rophyl.-a production. Structural.y, fish assembl.ges in both stream types contained many regional.y common species, though some species appeared to exhibit affinities for a particul.r stream type. Functional.y, fish assembl.ges in agricul.ure streams contained more tol.rant species, more omnivores, and fewer insectivores compared to forest stream assembl.ges, which were nearl. al. insectivores. Overal., one-third of the fish specimens col.ected in forest streams cl.ssified as intol.rant *** Our resul.s suggested that stream water qual.ty, habitat, and fish assembl.ges differed between agricul.ure and forest streams in the MAP, with fish assembl.ges e

关键词： Agricul.ure Stream l.nd use Water qual.ty Habitat Fish Mul.ivariate statistics Mississippi Al.uvial.Pl.in