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Coordination chemistry of surface-associated ligands for solid-liquid adsorption of rare-earth elements

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journal of Rare Earths 2023年第1期41卷 1-18页

作者： jessica l.Hovey Timothy M.Dittrich Matthew j.Allen Department of Chemistry Wayne State University5101 Cass AvenueDetroitMI48202USA Department of Civil and Environmental Engineering 5050 Anthony Wayne DriveWayne State UniversityDetroitMIl48202USA

General guidelines for the design of ligands for the enrichment of rare-earth elements by solid-liquid adsorption are described using coordination *** properties of ligands include selectivity of metal ions based on adjustment of donor atom polarizability,denticity,and the pKarange of the binding *** selectivity of solid-phase materials for the enrichment of rare-earth ions by the ligand design guidelines is outlined,with special consideration of additional variable factors including steric hindrance,saturated binding sites,variability in speciation caused by the identity of counterions and ionic strength,and size-exclusivity in ligands stemming from differences in bite angle,preo rganization of ligands,or intraligand *** review analyzes some principles of selectivity of rare-earth elements with ligands organized by donor type from examples collected from reports published between 2009 and 2021.

关键词： Chelating ligand Coordination chemistry Solid-phase material Rare-earth element Separation Solid-liquid extraction

Semi-analytical investigation of heat transfer in a porous convective radiative moving longitudinal fin exposed to magnetic field in the presence of a shape-dependent trihybrid nanofluid

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Applied Mathematics and Mechanics(English Edition) 2024年第1期45卷 197-216页

作者： C.G.PAVITHRA B.j.GIREESHA M.l.KEERTHI Department of PG Studies and Research in Mathematics Kuvempu UniversityShankaraghatta 577451India Department of Mathematics and Statistics M.S.Ramaiah University of Applied SciencesBengaluru 560058India

The thermal examination of a non-integer-ordered mobile fin with a magnetism in the presence of a trihybrid nanofluid(Fe_3O_4-Au-Zn-blood) is carried out. Three types of nanoparticles, each having a different shape, are considered. These shapes include spherical(Fe_3O_4), cylindrical(Au), and platelet(Zn) configurations. The combination approach is utilized to evaluate the physical and thermal characteristics of the trihybrid and hybrid nanofluids, excluding the thermal conductivity and dynamic viscosity. These two properties are inferred by means of the interpolation method based on the volume fraction of nanoparticles. The governing equation is transformed into a dimensionless form, and the Adomian decomposition Sumudu transform method(ADSTM) is adopted to solve the conundrum of a moving fin immersed in a trihybrid nanofluid. The obtained results agree well with those numerical simulation results, indicating that this research is reliable. The influence of diverse factors on the thermal overview for varying noninteger values of γ is analyzed and presented in graphical representations. Furthermore, the fluctuations in the heat transfer concerning the pertinent parameters are studied. The results show that the heat flux in the presence of the combination of spherical, cylindrical, and platelet nanoparticles is higher than that in the presence of the combination of only spherical and cylindrical nanoparticles. The temperature at the fin tip increases by 0.705 759% when the value of the Peclet number increases by 400%, while decreases by 11.825 13% when the value of the Hartman number increases by 400%.

关键词： convection radiation moving longitudinal fin Adomian decomposition Sumudu transform method(ADSTM) trihybrid nanofluid magnetic field

Acetaminophen and zinc phosphide for lethal management of invasive lizards Ctenosaura similis

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Current Zoology 2011年第5期57卷 625-629页

作者： Michael l. AVERY john D. EISEMANN Kandy l. KEACHER Peter j. SAVARIE United States Department of Agriculture Wildlife Services National Wildlife Research Center Florida Field Station 2820 East University Avenue Gainesville FL 32641 USA United States Department of Agriculture Wildlife Services National Wildlife Research Center Ft. Collins CO 80225 USA

Reducing populations of invasive lizards through trapping and shooting is feasible in many cases but effective inte-grated management relies on a variety of tools, including toxicants. In Florida, using wild-caught non-native black spiny-tailed iguanas Ctenosaura similis, we screened acetaminophen and zinc phosphide to determine their suitability for effective population management of this prolific invasive species. Of the animals that received acetaminophen, none died except at the highest test dose, 240 mg per lizard, which is not practical for field use. Zinc phosphide produced 100% mortality at dose levels as little as 25 mg per lizard, equivalent to about 0.5% in bait which is lower than currently used in commercial baits for commensal rodent con-trol. We conclude that zinc phosphide has potential as a useful tool for reducing populations of invasive lizards such as the black spiny-tailed iguana provided target-selective delivery methods are developed [Current Zoology 57 （5）： 625~529, 2011].

关键词： Acetaminophen Black spiny-tailed iguana Ctenosaura similis Florida Invasive Zinc phosphide

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BOOK REVIEW

International journal of Digital Earth 2014年第3期7卷 173-174页

作者： j.l.van Genderen Department of Earth Observation Science Faculty of Geoinformation Science and Earth Observation University of Twente

Only one Earth:the long road via Rio to sustainable development,edited by *** and ***,london and New York,Routledge,Taylor&Francis Group,2012,312 pp.,(hbk),ISBN 978-0-415-54025-4 This well-written book traces the history and development of the long,and often painful,journey from the original Stockholm Summit of 1972,via the Rio Conference of 1992,to the‘RIO+20’held this year.

关键词： Rio Earth journey

COHERENT ANTI-STOKES RAMAN SCATTERING MICROSCOPY TO MONITOR DRUG DISSOlUTION IN DIFFERENT ORAl PHARMACEUTICAl TABlETS

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journal of Innovative Optical Health Sciences 2009年第1期2卷 37-43页

作者： M.jURNA M.WINDBERGS C.j.STRACHAN l.HARTSUIKER C.OTTO P.KlEINEBUDDE j.l.HEREK H.l.OFFERHAUS Optical Sciences Group MESA+Institute for Nanotechnology University of Twente The Netherlands Institute of Pharmaceutics and Biopharmaceutics Heinrich-Heine University of Düsseldorf Germany BioPhysical Engineering Group MESA+Institute for Nanotechnology University of Twente The Netherlands Centre for Drug Research University of Helsinki Finland School of Pharmacy University of Otago New Zealand

Coherent anti-Stokes Raman scattering(CARS)microscopy is used to visualize the release of a model drug(theophylline)from a lipid(tripalmitin)based tablet during *** effects of transformation and dissolution of the drug are imaged in real *** study reveals that the manufacturing process causes significant differences in the release process:tablets prepared from powder show formation of theophylline monohydrate on the surface which prevents a controlled drug release,whereas solid lipid extrudates did not show formation of *** visualization technique can aid future tablet design.

关键词： Drug release coherent anti-Stokes Raman scattering(CARS)microscopy

Patterns of trends in niveograph characteristics across the western United States from snow telemetry data

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Frontiers of Earth Science 2020年第2期14卷 315-325页

作者： S.R.FASSNACHT j.I.lÓPEZ-MORENO ESS-Watershed Science Colorado State UniversityFort CollinsCO 80523-1472USA Cooperative Institute for Research in the Atmosphere Colorado State UniversityFort CollinsCO 80523-1375USA Natural Resources Ecology laboratory Colorado State UniversityFort CollinsCO 80523-1499USA Instituto Pirenaico de Ecología CSICCampus de Aula Dei 50080Spain

The snowpack is changing across the globe,as the climate warms and *** used daily snow water equivalent(SWE)niveograph(time series of SWE)data from 458 snow telemetry(SNOTEl)stations for the period 1982 through *** indices based on amount,timing,time length,and rates were used to describe the annual temporal evolution in SWE accumulation and *** trends in these annual indices were computed over the time period for each station using the Theil-Sen *** trends were then clustered into four groups to determine the spatial pattern of SWE *** and precipitation data were extracted from the PRISM data set,due to the shorter time period of temperature measurement at the SNOTEl *** show that SNOTEl stations can be clustered in four clusters according to the observed trends in snow *** 1 stations are mostly located in the Eastern-and South-eastern most parts of the study area and they exhibit a generalized decrease in the indices related with peak SWE and snow *** stations recorded a negative trend in precipitation and an increase in *** 4 that is mostly restricted to the North and North-west of the study area shows an almost opposite pattern to cluster 1,due to months with positive trends and a more moderate increase of *** grouped in clusters 2 and 3 appear mixed with clusters 1 and 4,in general they show very little trends in the snow indices.

关键词： snow water equivalent cluster analysis SNOTEl

FINITE ElEMENT NUMERICAl SIMUlATION OF TEMPERATURE FIElD IN METAl PATTERN CASTING SYSTEM AND "REVERSE METHOD" OF DEFINING THE THERMAl PHYSICAl COEFFICIENT

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Acta Metallurgica Sinica(English letters) 2007年第3期20卷 217-224页

作者： l. Chen P.l. Wang P.N. Song j.Y. Zhang Mechanical Engineering College Tianjin University of Technology Tianjin 300191China

With the technology support of virtual reality and ANSYS software, an example on the simulation of temperature distribution of casting system during the solidification process was provided, which took the latent heat of phase change, the conditions for convection, and the interface heat transfer coefficient into consideration. The result of ANSYS was found to agree well with the test data. This research offers an unorthodox way or ＂reverse method＂ of defining the relevant thermal physical coefficient.

关键词： solidification process reverse method ANSYS software

DEFORMATION-INDUCED α2→γ TRANSFORMATION IN A HOT DEFORMED Ti-45A1-10Nb AllOY

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Acta Metallurgica Sinica(English letters) 1998年第1期11卷 19-24页

作者： j.G.Wang l.CZhang G.l.Chen H.Q.Ye Univ of Science and Technology Beijing Beijing China

High-resolution transmission electron microscope (HRTEM) was employed to investigate the deformation-induced α2→γ phase transformation phenomenon in a hot deformed Ti-45Al-10Nb alloy. Such a tronsformation can be nucleated either at α2/γ interfaces or at stacking faults on the basal planes of the α2 phase. The growth of deformation-induced γplate is accomplished by the motion of α/6 Shockley partials on alternate basal planes (0001)α2, and the α/6 Shockley partials move in coordination rather than sweep on (0001)α2 plane one by one. It appears that no atom transportation is involved in this stress-induced α2→γ transfromation.

关键词： intermetallic compound titanium aluminide Ti-45Al-10Nb alloy stress-induced phase transformation interface HRTEM

NUMERICAl SOlUTION OF UNSTEADY DENSE PHASE TRANSPORT OF PUlVERIZED COAl

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journal of Hydrodynamics 1991年第3期3卷 116-124页

作者： A.l.Ren Y.l.Ma B.H.Zhong j.M.Shi Department of Mechanics Zhejiang University Hangzhou 310027 P.R.China Shanghai Power Equipment Research Institute Shanghai 200240 P.R.China

It presents the one-dimensional unsteady dense transport equation in the tube for MHD pulverized coal feed. The simplified frictional force term introduced by liu is used in the equation. The numerical solution has been got by using MacCormack method. The results show that there exists optimal loading rate in which state velocity is not oscillation along a tube. It is well agreed with measurement, it also prevents a sediment in the tube.

关键词： Coal Handling Coal Pulverizers Computers Applications Fluid Mechanics Mathematical Models