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Molecular Dynamics Simulation of Binary Fluorozirconate Glass ZrF_(4)·BaF_(2)

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Chinese Physics Letters 1998年第5期15卷 326-328页

Binary fluorozirconate glassZrF_(4)·BaF_(2) has been studied by molecular dynamical simulation using parameter-free Gordon-Kim *** these simulations a novel technique is employed to monitor the motion of ions,thus the structure pictures of glass and the microscopic motion mechanism of ionic conduction are clearly and directly *** glass networks commonly are formed by ZrF8,ZrF7 or ZrF6 polyhedra,cross linked by Ba-F ionic *** mean distance of the ionic nearest neighboring at 300K is about 3.90Å(Zr-Zr),3.87Å(Zr-Ba),and 1.96Å(Zr-F).The two stronger peaks of five main peaks of vibrational spectra are at about 540-600 and 460-510cm^(-1) and three weaker peaks at about 386-416,322-348,and 183-196cm^(-1).The other properties of glass:density,thermal expansion coefficient,polarization,and glass transition temperature are also examined.

关键词： zirconate glass Molecular

Combined Effects of Nb and B MicroAlloying in Molybdenum Based Ultra Low Carbon Bainitic (ULCB) Steels

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journal of Iron and Steel research International 2011年第S1期18卷 785-791页

作者： hardy Mohrbacher NiobelCon bvba 2970 SchildeBelgium

ULCB steels have a great potential for structural as well as automotive applications due to the lean alloying concept and the favorable combination of strength and *** steels are being considered as the material of choice for many advanced applications where yield strength above 500 MPa is required to reduce component *** Mo has been a key alloying element in producing such *** order to push the property envelope of ULCB steels it is interesting to combine Mo alloying with the microalloying elements Nb and *** effects between these elements bear synergies that cannot be achieved by single *** paper demonstrates how these synergies can be beneficially used in combination with appropriate processing.

关键词： grain refinement bainitic transformation precipitation hardening accelerated cooling tempering

A Strategy of Avoiding Delayed Fracture in Ultrahigh Strength Automotive Steels by Nb Microalloying

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journal of Iron and Steel research International 2011年第S1期18卷 893-897页

作者： hardy Mohrbacher NiobelCon bvba 2970 SchildeBelgium

recently the automotive industry has been confronted with the phenomenon of delayed *** phenomenon was not relevant in earlier years since the strength level of the steels was generally below a critical ***,delayed fracture is not necessarily related to an absolute strength value but rather to microstructural features as well as pre-existing micro-damage in the material that are likely to occur in ultrahigh strength *** microalloying in combination with appropriate processing can effectively help to improve the resistance against delayed fracturing in such *** paper outlines a strategy how to achieve this based on microstructural control and hydrogen trapping.

关键词： delayed fracture niobium microalloying grain refinement hydrogen trapping molybdenum alloying

Testing CVC and CKM Unitarity via Superallowed Nuclear Beta Decay

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原子核物理评论 2016年第2期33卷 207-211页

作者： j.C.hardy I.S.Towner Cyclotron Institute Texas A&M UniversityCollege Station

Superallowed nuclear beta decay between 0^+analog states is a sensitive probe of the weak interaction, with the established strength – or F t value – of each such transition being a direct measure of the vector coupling constant, GV. Each transition's F t value depends on the half-life of the parent nucleus as well as on the Q-value and branching ratio for the transition of interest. It also depends on small(~1%) transition-dependent theoretical corrections, of which the most sensitive accounts for isospin symmetry breaking. We have recently published a new survey of world superallowed-decay data, which establishes the F t values of 14 separate superallowed transitions to a precision of order 0.1% or *** results from this very robust data set yield the value of Vud, the up-down quark mixing element of the Cabibbo-Kobayashi-Maskawa(CKM) matrix, and lead to the most demanding test available of CKM unitarity. The survey results and their outcome are described, as is the current direction of experiments that focus on testing the validity of the isospin-symmetry-breaking corrections.

关键词： beta decay CKM unitarity isospin symmetry breaking

Transaction costs for collaboration in the watershed management of the Cuyahoga river Area of Concern

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regional Sustainability 2022年第2期3卷 146-156页

作者： Scott Daniel hardy Ohio Sea Grant The Ohio State UniversityColumbus43212USA

This study examines the transaction costs of collaborative watershed management in the Cuyahoga river Area of Concern(AOC)—one of the 43 geographic areas designated by the *** Canada Great Lakes Water Quality Agreement(GLWQA),where significant impairment of beneficial uses has occurred as a result of human *** Cuyahoga river is located in Northeast Ohio,the *** flows through the City of Cleveland before draining into Lake Erie—one of the five Great Lakes of North *** watershed is degraded due to municipal and agricultural discharges,streambank erosion,and contamination from urban and industrial *** research explores how a diverse group of stakeholders convened under the Cuyahoga river AOC Advisory Committee to share information,coordinate activities,agree on activities that restore beneficial uses,and support strategic management *** this study,23 semi-structured interviews with members of the advisory committee were conducted between january 28,2020 and April 20,2020,with follow-up emails and phone calls as needed to corroborate information.A review of research articles and government documents supported the interviews,including United States Environmental Protection Agency(***)and Ohio Environment Production Agency(OEPA)reports on the GLWQA and Cuyahoga river remedial Action Plans.A third source of data is from direct participant observation at quarterly meetings of the advisory committee during 2017–2020,binational AOC conferences in 2017 and 2019,and other professional events geared towards restoring the Cuyahoga river AOC in 2016–*** of this study include a set of recommendations to help guide group structure and decision-making processes,including(1)employing best available technology to organize AOC events and disseminate information;(2)supporting new members with an orientation and/or mentor to clearly define formal and informal committee rules;(3)assuring equal access to detailed information on managem

关键词： Environmental policy Watershed management Transaction costs Collaboration Sustainability Great Lakes

Simulating streamflow and water table depth with a coupled hydrological model

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Water Science and Engineering 2010年第3期3卷 241-256页

作者： Alphonce Chenjerayi GUZHA Thomas Byron hardy Department of Agricultural and Biological Engineering Southwest Florida Research and Education CenterUniversity of Florida river Systems Institute Texas State University

A coupled model integrating MODFLOW and TOPNET with the models interacting through the exchange of recharge and baseflow and river-aquifer interactions was developed and applied to the Big Darby Watershed in Ohio, USA. Calibration and validation results show that there is generally good agreement between measured streamflow and simulated results from the coupled model. At two gauging stations, average goodness of fit （ r2 ）, percent bias （ PB ）, and Nash Sutcliffe efficiency （ENS） values of 0.83, 11.15%, and 0.83, respectively, were obtained for simulation of streamflow during calibration, and values of 0.84, 8.75%, and 0.85, respectively, were obtained for validation. The simulated water table depths yielded average r2 valuesof0.77 and 0.76 for calibration and validation, respectively. The good match between measured and simulated streamflows and water table depths demonstrates that the model is capable of adequately simulating streamflows and water table depths in the watershed and also capturing the influence of spatial and temporal variation in recharge.

关键词： hydrological modeling model coupling," streamflow groundwater," TOPNET model," MODFLOW model," Big Darby Watershed

An integrated approach for dynamic traffic routing and ramp metering using sliding mode control

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journal of Traffic and Transportation Engineering(English Edition) 2018年第2期5卷 116-128页

作者： Hirsh Majid Chao Lu hardy Karim Department of Civil Engineering College of Engineering University of Sulaimani School of Mechanical Engineering Beijing Institute of Technology

The problem of designing integrated traffic control strategies for highway networks with the use of route guidance, ramp metering is considered. The highway network is simulated using a first order macroscopic model called LWr model which is a mathematical traffic flow model that formulates the relationships among traffic flow characteristics in terms of density, flow, and mean speed of the traffic stream. An integrated control algorithm is designed to solve the proposed problem, based on the inverse control technique and variable structure control（super twisting sliding mode）. Three case studies have been tested in the presence of an on-ramp at each alternate route and where there is a capacity constraint in the network. In the first case study, there is no capacity constraint at either upstream or downstream of the alternate routes and the function of the proposed algorithm is only to balance the traffic flow on the alternate routes. In the second case study, there is capacity constraint at downstream of alternate routes. The proposed algorithm aims to avoid congestion on the main road and balance the traffic flow on the alternate routes. In the last case study, there is capacity constraint at upstream of alternate routes. The objective of proposed algorithm is to avoid congestion on the main road and to balance the traffic flow on the alternate routes. The obtained results show that the proposed algorithms can establish user equilibrium between two alternate routes even when the on-ramps, located at alternate routes, have different traffic demands.

关键词： Highway traffic simulation Macroscopic model Sliding mode control Dynamic traffic routing On-ramp metering Integrated control

Bridging the microstructural evolutions from slurry to porous electrode of a lithium-ion battery

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journal of Energy Chemistry 2023年第9期84卷 329-334页

作者： Hamid Hamed Zoleikha Mirzaie Alamooti Ashutosh Agrawal jan D'Haen An hardy Mohammadhosein Safari Institute for Materials research(IMO-imomec) UHasseltMartelarenlaan 42B-3500 HasseltBelgium Energyville Thor Park 8320B-3600 GenkBelgium IMEC Division IMOMEC BE-3590Belgium

1. Introduction The porous electrodes are the crucial components of the modern electrochemical devices including lithium-ion batteries. The detailed configuration of the lithium-insertion, carbon black, and PVDF binder particles in a typical electrode of a lithium-ion cell has a significant impact on its energy and power density. A thinner electrode is desired to decrease the battery volume particularly for portable electronics and mobility applications.

关键词： density. lithium electrode

Insect(black soldier fly larvae) oil as a potential substitute for fish or soy oil in the fish meal-based diet of juvenile rainbow trout(Oncorhynchus mykiss)

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Animal Nutrition 2021年第4期7卷 1360-1370页

作者： Femi j.Fawole Shyam N.Labh Md Sakhawat Hossain Ken Overturf Brian C.Small Thomas L.Welker ronald W.hardy Vikas Kumar Aquaculture research Institute Department of AnimalVeterinary and Food SciencesUniversity of IdahoMoscowID83844USA Hagerman Fish Culture Experiment Station Aquaculture Research InstituteUniversity of IdahoHagermanIDUSA Department of Aquaculture and Fisheries University of IlorinIlorinNigeria Department of Aquaculture Faculty of FisheriesSylhet Agricultural UniversitySylhet3100Bangladesh United States Department of Agriculture Agricultural Research ServiceHagerman Fish Culture Experiment StationHagermanIDUSA

Alternative sources of fish oil(FO)are one of the major problems in aquaculture;therefore,the goal of the present study was to examine insect(black soldier fly larvae)oil(BSLO)as a potential replacer of fish/s oy oil in juvenile rainbow trout(initial average weight of 32±0.15 g)*** diets were formulated wherein FO(control diet)was completely replaced with either soybean oil(SO)or BSLO,and an additional BSLO-based diet supplemented with 1.5%bile acid(BSLO+BA)were fed to the fish for 10 *** performance of the BSLO fed group was similar(P>0.05)to that of the FO and SO fed groups,howeve r,the fish fed BSLO+BA diet registered the lowest growth(Prces did not(P>0.05)affect the major nutrient content of whole-body,however,the fatty acid composition of the muscle and liver was influenced(Prated fatty acid detected in BSLO or BSLO+BA fed trout compared to the others(Prences were observed in eicosapentaenoic acid+docosahexaenoic acid(EPA+DHA)or total n-3 polyunsaturated fatty acid(PUFA)content in muscle among the groups,whereas,the highest EPA:DHA and n-3:n-6 ratios were detected in the FO *** expression for fatty acid binding protein(fabp),fatty acid synthase(fas),and△5 desaturase in the liver was lower in FO(Pregistered the highest△6 expression(P=0.006).Supplementation of BA in the BSLO diet increased superoxide dismutase(SOD)and catalase(CAT)activities compared to the other groups(Prve as a substitute for FO and SO in rainbow trout diet without negatively impacting growth performance,whole-body composition and nutrient retention,and modulate the expression of fatty acid metabolism-related genes in rainbow trout.

关键词： Insect oil rainbow trout Growth performance Fatty acid metabolism Antioxidant enzyme