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Journal of rare Earths 2022年第4期40卷 652-659,I0005页

作者： Fatima El Bachraoui Zakaria Chchiyai Youssef Tamraoui Hassan El Moussaoui jones Alami Bouchaib Manoun Materials Science Energy and Nano-engineering Department(MSN)University Mohammed VI Polytechnic43150BenguerirMorocco Hassan First University of Settat FSTRayonnement-Matière et InstrumentationS3M26000SettatMorocco Materials and Nanomaterials Center Moroccan Foundation for Advanced ScienceInnovation and Research10100RabatMorocco

Structural,optical and magnetic properties are reported for new synthesized perovskite ***_(0.3)La_(0.7)Ti_(0.3)Fe_(0.7)O_(3) and Ba_(0.1)La_(0.9)Ti_(0.1)Fe_(0.9)O_(3) compositions were prepared via solid state reaction.X-ray analysis confirms that both compositions show feature of perovskite *** refinement method was used to confirm the phase formation and investigate the structure and space *** study demonstrates the formation of orthorhombic structure with Pnma space group for Ba_(0.3)La_(0.7)Ti_(0.3)Fe_(0.7)O_(3) while the composition Ba_(0.1)La_(0.9)Ti_(0.1)Fe_(0.9)O_(3) structure adopts Pbnm ***–vis spectroscopy measurements show very broad and intense UV–visible light absorption,the estimated band gap ranges between 2.07 and 2.15 *** measurements were carried out for the compositions Ba_(0.3)La_(0.7)Ti_(0.3)Fe_(0.7)O_(3) and Ba_(0.1)La_(0.9)Ti_(0.1)Fe_(0.9)O_(3).The hysteresis loops of both samples at 300 and 10 K show a strong ferromagnetic *** temperature dependent magnetization at 0.05 T under field-cooled(FC)and zero field cooled(ZFC)modes shows magnetic frustration or spin glass-like behavior.

关键词： Perovskites Co-substitution effect Phase transition Band gap Ferromagnetic Visible light absorption

Flame Structure of Methane and Kerosene Combustion with a Compact Concave Flame-Holder using the LES-pdf Method

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Journal of Thermal Science 2024年第1期33卷 222-234页

作者： WANG Fang WANG Yunfan WEI Guanyi LIU Denghuan JIN Jie jones P.William School of Energy and Power Engineering Beihang UniversityBeijingBeijing 100191China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Compact flame-holders for afterburners are an increasing requirement for modern aero ***,flame-holder design is non-trivial since high inlet temperatures,velocities,and elaborate structures induce complex turbulence,combustion,and spray coupling in modern *** this work,the LES-pdf and stochastic fields-Lagrangian particle spray methods are used to investigate methane and aviation kerosene combustion structures formed by new-type concave *** flow pattern,combustion mode,and flame structure of gaseous and liquid fuel around a concave flame-holder are analyzed,discussed,and compared with experimental *** reveal that the flame stability of a concave flame-holder is better than that of the non-concave ***,when using liquid fuel,the concave flame-holder forms a stable and compact *** results suggest concave flame-holders are a promising design for compact afterburners.

关键词： concave structure flame-holder LES-pdf spray combustion flame structure AECSC

Mr扩散加权成像可作为判别围产期死亡时间的一个标志

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国际医学放射学杂志 2015年第4期 393-394页

作者： O.J.Arthurs G.C.Price D.W.Carmichael r.jones W.Norman A.M.Taylor 郝彩仙 Department of radiology Great Ormond Street Hospital for Children NHS Foundation Trust

摘要目的应用尸检MrI(PMMr)测量围产期死亡人体器官的表观扩散系数(ADC)值,以评估死亡后人体器官的变化。方法对15例已死亡的胎儿和新生儿病例[平均(33.3±

关键词：加权成像围产期围生期 Mr 死亡时间

Impacts of timing,length,and intensity of behavioral interventions to COVID-19 dynamics:North Carolina countylevel examples

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Infectious Disease Modelling 2022年第3期7卷 535-544页

作者： Claire Quiner Kasey jones Georgiy Bobashev rTI International 3040 E.Cornwallis RoadPO Box 12194Research Triangle ParkNC27709USA

We sought to examine how the impact of revocable behavioral interventions,e.g.,shelterin-place,varies throughout an epidemic,as well as the role that the proportion of susceptible individuals had on an intervention's *** estimated the theoretical impacts of start day,length,and intensity of interventions on disease transmission and illustrated them on COVID-19 dynamics inWake County,North Carolina,to inform how interventions can be most *** used a Susceptible,Exposed,Infectious,and recovered(SEIr)model to estimate epidemic curves with modifications to the disease transmission parameter(β).We designed modifications to simulate events likely to increase transmission(e.g.,long weekends,holiday seasons)or behavioral interventions likely to decrease it(e.g.,shelter-in-place,masking).We compared the resultant curves'shape,timing,and cumulative case count to baseline and across other modified *** led to changes in COVID-19 dynamics,including moving the peak's location,height,and *** proportion susceptible,at the start day,strongly influenced their *** interventions shifted the curve,while interventions near the peak modified shape and case *** some scenarios,in which the transmission parameter was decreased,the final cumulative count increased over *** showed that the timing of revocable interventions has a strong impact on their *** same intervention applied at different time points,corresponding to different proportions of susceptibility,resulted in qualitatively differential *** estimation of the proportion susceptible is critical for understanding an intervention's *** findings presented here provide evidence of the importance of estimating the proportion of the population that is susceptible when predicting the impact of behavioral infection control *** emphasis should be placed on the estimation of this epidemic component in intervention design and decision-makin

关键词： Sars-cov-2 Public health decision-making Infection control policies

GrEENING EXISTING BUILDINGS WITH THE LEED rATING SYSTEM

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Journal of Green Building 2009年第1期4卷 41-57页

作者： Brad jones Peter Dahl John Stokes LEED AP

INTrODUCTION When considering the current situation of the built environment it becomes readily apparent that the LEED for Existing Buildings Operations and Maintenance(LEED-EBOM)rating System is the most important of all the LEED rating *** its adoption in the industry has lagged behind the better known LEED for New Construction rating *** the effort to create more efficient,healthy,and financially sound buildings,LEEDEBOM accounts for two significant classes of buildings:buildings certifi ed under the LEED rating Systems geared toward design and construction,and buildings not previously ***-EBOM is a tool to measure the impact of a building’s operations and provide a means to track performance over *** information allows stakeholders to make informed decisions about operating policies that support energy efficiency,reduced environmental impact,and comfortable spaces for the occupants of the *** article presents statistics about the existing building stock,provides an overview of the LEED-EBOM rating System,and offers examples of successful implementation strategies drawn from over a dozen projects certifi ed through the LEED-EB rating Systems.

关键词： LEED operations readily

DECISION PrOCESS FOr ENErGY EFFICIENT BUILDING rETrOFITS:THE OWNEr’S PErSPECTIVE

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Journal of Green Building 2010年第3期5卷 131-146页

作者： Birk jones Susan M.Bogus Yearout Mechanical Inc.&Graduate Student University of New Mexico. Department of Civil Engineering MSC0110701 University of New MexicoAlbuquerqueNM 87131

The process by which a building owner evaluates and decides upon energy conservation measures(ECMs)for a building retrofit is key towards achieving efficient ***,many owners rely on unsophisticated evaluation methods,which potentially limits the amount of energy reduced in the commercial *** energy in the nearly 4.9 million commercial buildings is critical because they account for approximately one fifth of the total energy consumption in the United *** their energy consumption levels will have significant impacts on energy dependency,Greenhouse Gas emissions(GHG),and operations *** decision processes of twelve private and public organizations in New Mexico were evaluated through collective case study *** processes of each organization were compared and key steps were *** the most used and critical steps were combined to create an integrated decision approach that optimizes cost savings and GHG emission *** integrated decision process involves five main steps:(1)Building Energy Data;(2)Energy Identification and Analysis;(3)Assessment;(4)Design and Planning;and(5)Approval.

关键词： sustainable buildings energy efficiency building retrofits energy conservation financial performance

VALUATION ISSUES IN A GrEENING WOrLD

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Journal of Green Building 2008年第3期3卷 42-56页

作者： Tom Loban Todd D.jones Thomson Property Tax Services

INTrODUCTION As most readers of this publication are well aware,the concept of“green building”or“sustainable development”focuses on meeting the needs of the current generation without compromising the ability of future generations to meet their own *** specifically,“green building”references the characteristics and quality of a subject property resulting from the employment of the principles and methods of sustainable construction.A significant body of research on this concept is evolving,espousing the favorable social,environmental,and economic impacts of this approach to real estate development.

关键词： own sustainable property

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Acta Mechanica Sinica 2010年第4期26卷 567-572页

作者： D.J.Colquitt A.B.Movchan I.S.jones W.Daniels Department of Mathematical Sciences University of Liverpool School of Engineering John Moores University Serco Assurance Walton House 404 The QuadrantBirchwood ParkRisleyWarringtonCheshireWA3 6GAUK

The paper presents a computational model for elastic waves in a structured weld adjacent to the free surface of an elastic solid. The main emphasis is on the interaction of waves with the micro-structure of the weld. Effects of localisation and channeling of waves are addressed. A model of a grain structure within the weld is also considered.

关键词： Macro-structured welds Waves in stratified media Dispersion Localisation

PrELIMINArY STUDY ON MAKING OF WATEr rESISTANCE WOOD FIBErBOArD

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Journal of Northeast Forestry University 1991年第2期2卷 54-60页

作者： Banks W.B. jones G.L. North Wales University North Wales University United KingdomUnited Kingdom

In the present study,described that preparation of oligoesterified wood fibre by theaddition reaction of the wood fibre with maleic anhydride(MA)and allyl glycidyl ether(AGE).Further,made of crosslinkable oligoesterified fiber board at high temperature and underhigh pressues,accompanying plasticization of the wood fibre *** product exhibitedthe high the modulus of repture in bending(MOr),good water repellency and dimesionalstability.

关键词： Wood fibre Oligoestcriflcation Fiberboard

Detailed bed topography and sediment load measurements for two stepdown flows in a laboratory flume

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International Journal of Sediment research 2022年第3期37卷 287-298页

作者： Daniel Wren roger Kuhnle Tate Mc Alpin David Abraham Keaton jones United States Department of Agriculture Agricultural Research Service National Sedimentation Laboratory U.S.Army research and Development Center Coastal and Hydraulics Laboratory

Streams and rivers, particularly smaller ones, often do not maintain steady flow rates for long enough to reach equilibrium conditions for sediment transport and bed topography. In particular, streams in small watersheds may be subject to rapidly changing hydrographs, and relict bedforms from previous high flows can cause further disequilibrium that complicates the prediction of sediment transport rates. In order to advance the understanding of how bedforms respond to rapid changes in flow rate, a series of flume experiments were performed where the flow was reduced rapidly from equilibrium *** transport rates and bed elevation data across the flume and over a 15-meter-long test section were collected during the experiments to allow detailed examination of evolving bedform dynamics. It was found that relict bedforms stopped moving completely after flow reductions, and the mode of sediment transport was shifted to small bedforms that arose rapidly over dune stoss sections throughout the test section. The changes in sediment transport with time as the sand bed adjusted to the new flow rate was found to agree with predictions based on the relations proposed in Wren et al.(2020). Wavelet analysis is used to visualize changes in length and amplitude scales during the bed transition process.

关键词： Sediment transport Bedforms Dunes Wavelets