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Leaching of lanthanide and yttrium from a Central Appalachian coal and the ashes obtained at 550-950℃

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Journal of Rare Earths 2022年第5期40卷 807-814,I0005页

作者： Ronghong Lin Yee Soong Bret H.Howard murphy J.Keller Elliot A.Roth Ping Wang Evan J.Granite U.S.Department of Energy National Energy Technology Laboratory626 Cochrans Mill RoadP.O.Box 10940PittsburghPA15236United States Keylogic Systems.Pittsburgh PA15236United States

In this work,we investigated leaching of lanthanide and yttrium(REY) from a Central Appalachian coal and its ashes obtained at 550-950℃ with the main purpose of understanding the impact of ashing temperature on REY leachability in water,ammonium sulfate,and hydrochloric *** is found that the coal contains a negligible amount of water-soluble REY,less than 1% ion-exchangeable REY,and about 28% of HCl-soluble *** leads to dramatic changes in REY leachability in both ammonium sulfate and hydrochloric acid solutions,which is believed to be related to transformation and redistribution of organically-associated REY in coal during the ashing *** temperature significantly affects REY leaching from coal ashes;higher ashing temperature results in lower REY leachability in both *** minerals may play a significant role in changing the leachability of REY after *** addition,the results also suggest that the organic matter in the coal is relatively enriched in heavy REY.

关键词： Acid leaching Cation exchange Coal Coal ash Rare earth elements Yttrium

JUMPING INSTABILITIES IN THE POST-BUCKLING OF A BEAM ON A PARTIAL NONLINEAR FOUNDATION

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Acta Mechanica Solida Sinica 2013年第5期26卷 500-513页

作者： Yin Zhang Kevin D murphy State Key Laboratory of Nonlinear Mechanics (LNM) Institute of Mechanics Chinese Academy of Sciences Department of Mechanical Engineering University of Connecticut

Mode jumping is an instability phenomenon in the post-buckling region, which causes a sudden change in the equilibrium configuration and is thus harmful to structure. The con- figuration of a partial elastic foundation can directly induce mode coupling from the buckling stage and through the whole post-buckling region. The mode coupling effect due to the configuration of partial foundation on mode jumping is investigated and demonstrated to be an important factor of determining mode jumping. By properly choosing the partial elastic foundation configuration, mode jumping can be avoided.

关键词： instability mode jumping tertiary jumping buckling beam elastic foundation

Tensionless contact of a finite circular plate

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Acta Mechanica Sinica 2012年第5期28卷 1374-1381页

作者： Yin Zhang Kevin D.murphy State Key Laboratory of Nonlinear Mechanics(LNM) Institute of MechanicsChinese Academy of Sciences Department of Mechanical Engineering the University of Connecticut

A general formulation is developed for the contact behavior of a finite circular plate with a tensionless elastic foundation. The gap distance between the plate and elastic foundation is incorporated as an important parameter. Unlike the previous models with zero gap distance and large/infinite plate radius, which assumes the lift-off/separation of a flexural plate from its supporting elastic foundation, this study shows that lift-off may not occur. The results show how the contact area varies with the plate radius, boundary conditions and gap distance. When the plate radius becomes large enough and the gap distance is reduced to zero, the converged contact radius close to the previous ones is obtained.

关键词： Tensionless contact Elastic foundation Plate Lift-off

VLF/LF Electromagnetic Emissions Predict an Earthquake

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Open Journal of Earthquake Research 2022年第2期11卷 31-43页

作者： Manana Kachakhidze Nino Kachakhidze-murphy Natural Hazards Scientific-Research Center Georgian Technical University Tbilisi Georgia

The present consolidated paper represents the VLF/LF (very low frequency/low frequency) electromagnetic radiation as the earthquake’s true precursor. The search is mainly carried out on the basis of a theoretical model of the generation of electromagnetic emissions during the earthquake preparation period and earthquake prediction methodology. It is shown that this parameter is capable of describing the fault formative process in the focal area. Besides, VLF/LF electromagnetic radiation frequency analysis gives the possibility simultaneously to determine all necessary three characteristic parameters (magnitude, epicenter, time of occurring) for incoming earthquake prediction with great precision.

关键词： Electromagnetic Emissions Earthquake Precursor Prediction

Tensionless contact of a finite beam:Concentrated load inside and outside the contact zone

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Acta Mechanica Sinica 2013年第6期29卷 836-839页

作者： Yin Zhang Kevin D.murphy State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of Sciences Department of Mechanical Engineering University of ConnecticutStorrsCT 06268USA

For a finite beam with a nonzero gap distance, an asymmetric concentrated load can be either inside or outside of the contact zone. A new governing equation is given for the case of a concentrated load outside the contact zone. By numerically solving the left-side and right-side contact lengths of the beam, a criterion is established to determine whether the concentrated load is inside or outside the contact zone. A more general approach on the tensionless contact of a beam is thus presented.

关键词： Tensionless contact Lift-off Beam

Congenital cutaneous mastocytosis mistaken for non-accidental injury

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Pediatric Investigation 2023年第3期7卷 218-219页

作者： Emma Porter Cynthia Heffron Lesley Ann murphy Cathal O’Connor Department of Dermatology South Infirmary Victoria University HospitalCorkIreland Department of Pathology Cork University HospitalCorkIreland INFANT Research Centre University College CorkCorkIreland

To the editor:A previously well male infant presented to his general practitioner(GP)for his routine 6-week *** parents reported the presence of tan-brown lesions since *** marks were uniform in color,were present on the trunk,scalp,and face,and were not overlying bony *** GP was concerned that these lesions represented bruising as a manifestation of non-accidental injury(NAI),and arranged an urgent review at our pediatric department.

关键词： routine injury editor

Uterine receptivity and the plasma membrane transformation

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Cell Research 2004年第4期14卷 259-267页

作者： Christopher R murphy Department of Anatomy and Histology The University of Sydney NSW 2006. Australia

This review begins with a brief commentary on the diversity of placentation mechanisms, and then goes on to examine the extensive alterations which occur in the plasma membrane of uterine epithelial cells during early pregnancy across species. Ultrastructural, biochemical and more general morphological data reveal that strikingly common phenomena occur in this plasma membrane during early pregnancy despite the diversity of placental types-from epitheliochorial to hemochorial, which ultimately form in different species. To encapsulate the concept that common morphological and molecular alterations occur across species, that they are found basolaterally as well as apically, and that moreover they are an ongoing process during much of early pregnancy, not just an event at the time attachment, the term ’plasma membrane transformation’ is suggested which also emphasises that alterations in this plasma membrane during early pregnancy are key to uterine receptivity.

关键词： uterine epeithelial cells membrane tranformation.

Mechanochemical preparation and structural characterization of Ta-doped chlorapatite nanopowders

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Progress in Natural Science:Materials International 2016年第6期26卷 546-554页

作者： Bahman Nasiri-Tabrizi Wan Jefrey Basirun Belinda Pingguan-murphy Advanced Materials Research Center Materials Engineering DepartmentNajafabad BranchIslamic Azad University Department of Chemistry Faculty of ScienceUniversity of Malaya Department of Biomedical Engineering Faculty of EngineeringUniversity of Malaya

Nanocrystalline tantalum-doped chlorapatite（Ta-doped ClA） was successfully synthesized using a facile mechanochemical method. In the absence of the dopant, milling for 3 h led to the formation of a poorly crystalline hydroxyapatite, while in its presence of the Ta dopant, Ta-doped ClA nanopowders were produced as a result of an oncoming reaction. The results indicated that lattice micro-strain, crystallite size, crystallinity level, phase percentage and hexagonal lattice constants of the substituted apatite nanopowders were dramatically affected by the doping concentration. The a-axis and unit cell volume increased with the increase in the doping concentration, owing to the ionic radius difference of Cl;and OH;ions. From the TEM observations, the doped powders consisted of nanoneedles with a mean size of 60 ± 20 nm in length and 14 ±4 nm in width.

关键词： Mechano-synthesis Structural features Lattice constants XRD-Rietveld refinement Ta-doped ClA

Forest use suitability:Towards decision-making-oriented sustainable management of forest ecosystem services

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Geography and Sustainability 2023年第4期4卷 414-427页

作者： Goran Krsnik Keith MReynolds Philip murphy Steve Paplanus Jordi Garcia-Gonzalo JoséRamón González Olabarria Forest Science and Technology Centre of Catalonia(CTFC) Ctra Sant Llorençde Morunyskm 2Solson1Lleida 25280Spain US Department of Agriculture Forest Service Research3200 SW Jefferson WayCorvallisOR 97331USA InfoHarvest Inc.SeattleWA 98165USA Mountain View Business Group 428 Flying Orchid DrSan MarcosTX 78666USA Joint Research Unit CTFC-AGROTECNIO Ctra Sant Llorençde Morunyskm 2Solson1Lleida 25280Spain

Management of forest lands considering multi-functional approaches is the basis to sustain or enhance the provi-sion of specific benefits,while minimizing negative impacts to the *** a desired management itinerary to a forest depends on a variety of factors,including the forest type,its ecological characteristics,and the social and economic needs of local communities.A strategic assessment of the forest use suitability(FUS)(namely productive,protective,conservation-oriented,social and multi-functional)at regional level,based on the provision of forest ecosystem services and trade-offs between FUS alternatives,can be used to develop management strategies that are tailored to the specific needs and conditions of the *** present study assesses the provision of multiple forest ecosystem services and employs a decision model to identify the FUS that sup-ports the most present and productive ecosystem services in each stand in *** this purpose,we apply the latest version of the Ecosystem Management Decision Support(EMDS)system,a spatially oriented decision support system that provides accurate results for multi-criteria *** evaluate 32 metrics and 12 as-sociated ecosystem services indicators to represent the spatial reality of the *** to the results,the dominant primary use suitability is social,followed by protective and ***,final assignment of uses is not straightforward and requires an exhaustive analysis of trade-offs between all alternative options,in many cases identifying flexible outcomes,and increasing the representativeness of multi-functional *** assignment of forest use suitability aims to significantly improve the definition of the most adequate management strategy to be applied.

关键词： Forest ecosystem services Decision making Forest use suitability Multi-objective management Geospatial analysis