检索结果-南通市图书馆

Carbon Turnover in a Crop Rotation Under Free Air CO_2 Enrichment (FACE)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2005年第6期15卷 728-738页

作者： H. j. WEIGEL A. PACHOLSKI S. BURKART M. HELAL O. HEINEMEYER B. KLEIKAMP R. MANDERSCHEID C. FRüHAUF G. F. HENDREY K. LEWIN j. nagy Institute of Agroecology Federal Agricultural Research Centre (FAL) Bundesallee 50 38116 Braunschweig (Germany). German Weather Service Agriculture Department Kreuzweg 25 65366 Geisenheim (Germany) Earth Systems Sciences Division Brookhaven National Laboratory Building 490D P.O. Box 5000 Upton NY 11973 (USA)

Mostly based on assumptions derived from controlled-environment studies, predicted future atmospheric CO2 concentrations [CO2] are expected to have considerable impacts on carbon （C） turnover in agro-ecosystems. In order to allow the in situ examination of C-transformations in the plant-soil system of arable crop rotations under future [002], a free air carbon dioxide enrichment （FACE） experiment （550 μmol mol^-1 CO2） was started at Braunschweig, Germany in 1999. The crop rotation under investigation comprised winter barley, a cover crop （ryegrass）, sugar beets and winter wheat. Assessments of CO2 effects included the determination of above- and belowground biomass production, measurements of canopy CO2- and H2O- fluxes, soil microbial biomass and in situ soil respiration. The results obtained during the 1st crop rotation cycle （3 years） showed that for the selected crops elevated [CO2] entailed significant positive effects （P 〈 0.05） on aboveground （6%-14% stimulation） and belowground biomass production （up to 90% stimulation）, while canopy evapotranspiration was reduced. This resulted in increased soil water content. Also, depending on crop type and season, high CO2 stimulated in situ soil respiration （up to 30%）, while soil microbial biomass did not show significant respouses to elevated [CO2] during the first rotation cycle.

关键词： agroecosystems carbon elevated CO2 FACE soil

Ranking parameters in urban energy models for various building forms and climates using sensitivity analysis

在线全文

学校读者我要写书评

暂无评论

Building Simulation 2023年第9期16卷 1587-1600页

作者： Aysegul Demir Dilsiz Kaitlynn Ng j.rôme Kämpf Zoltan nagy Department of Civil and Architectural Engineering and Construction Management University of WyomingLaramie WYUSA Intelligent Environments Lab Department of CivilArchitectural and Environmental EngineeringThe University of Texas at AustinAustin TXUSA Energy Informatics Group Idiap Research Institute1920 MartignySwitzerland

Urban Building Energy Modelling(UBEM)allows us to simulate buildings’energy performances at a larger ***,creating a reliable urban-scale energy model of new or existing urban areas can be difficult since the model requires overly detailed input data,which is not necessarily publicly *** calibration is a necessary step to reduce the uncertainties and simulation results in order to develop a reliable and accurate *** to the concerns over computational resources and the time needed for calibration,a sensitivity analysis is often required to identify the key parameters with the most substantial impact before the calibration is deployed in ***,we study the sensitivity of uncertain input parameters that affect the annual heating and cooling energy demand by employing an urban-scale energy model,*** goal is to determine the relative influence of each set of input parameters and their interactions on heating and cooling loads for various building forms under different ***,we conduct a global sensitivity analysis for annual cooling and heating consumption under different climate *** upon this,we investigate the changes in input sensitivity to different building forms,focusing on the indices with the largest Total-order ***,we determine First-order indices and Total-order effects of each input parameter included in the urban building energy *** also provide tables,showing the important parameters on the annual cooling and heating demand for each climate and each building *** find that if the desired calibration process require to decrease the number of the inputs to save the computational time and cost,calibrating 5 parameters;temperature set-point,infiltration rate,floor U-value,*** U-value and roof U-value would impact the results over 55%for any climate and any building form.

关键词： global sensitivity analysis Sobol’method urban energy modeling building stocks energy modelling parameter screening Sobol’indices sustainable urban planning

Behavior of transporting pipeline sections without and with hydrogen exposure based on full-scale tests

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Welding 2024年第3期33卷 14-24页

作者： Nóra nagy j.nos Lukács Institute of Materials Science and Technology Faculty of Mechanical Engineering and InformaticsUniversity of MiskolcMiskolc 3515Hungary

Pipeline transport of hydrogen is one of today’s economic and environmental *** order to find safe and reliable application of both existing gas and build new pipelines,it is essential to carry out tests on full-scale pipeline section,including the potentially more dangerous places than the main pipe,the girth *** the investigations,pipeline sections of P355NH steel with girth welds were prepared and exposed to pure hydrogen at twice the maximum allowable operating pressure for 41 ***,full-scale burst tests were carried out and specimens were cut and prepared from the typical locations of the failed pipeline sections for mechanical,and macro-and microstructural *** results obtained were evaluated and compared with data from previous full-scale tests on pipeline sections without hydrogen *** results showed differences in the behavior of pipeline sections loaded in different ways,with different characteristics of the materials and the welded j.ints,both in the cases without hydrogen exposure and in the cases exposed to hydrogen.

关键词： gas transporting pipeline full-scale pipeline test complex loading condition hydrogen exposure safety factor

GREEN BUILDING MATERIALS:A REVIEW OF STATE OF THE ART STUDIES OF INNOVATIVE MATERIALS

在线全文

学校读者我要写书评

暂无评论

j.urnal of Green Building 2017年第4期12卷 141-161页

作者： P.De Luca I.Carbone j.B.nagy Department of Ingegneria per l’Ambiente ed il Territorio ed Ingegneria Chimica University of CalabriaRendeItaly Department of Ingegneria Civile University of CalabriaRendeItaly

***is paper presents a comprehensive survey of the latest international publications(2012-2017)regarding innovative and environmentally sustainable materials that reduce the production of *** is recognised that world construction is responsible for substantial amounts of harmful *** particular,the survey collected data on new sustainable solutions and innovative materials,such as cement,wood,glass and ceramics that are essential to minimize the environmental impact of buildings on the ecosystem and to reduce the consumption of natural resources.erefore,the paper’s intent is to give an overview of the current state of the art and research in theeld of bio-building,gathering information on the environmental impacts of these innovative materials and listing the benets that can be obtained with their *** findings of this study support the growing importance of grecn building as a componcnt of the whole construction market and provide a benchmark against which to mcasure futurc changes in the industry over time.

关键词： innovative materials sustainable materials bio-building green building

Thermal Reversion of Plant Phytochromes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2020年第3期13卷 386-397页

作者： Cornelia Klose Ferenc nagy Eberhard Schafer Institute of Biology II University of Freiburg79104 FreiburgGermany Institute of Plant Biology Biological Research CentreTemesvari krt.626726 SzegedHungary

Phytochromes are red/far-red reversible photoreceptors essential for plant growth and *** signaling is mediated by the physiologically active far-red-absorbing Pfr form that can be inactivated to the red-absorbing Pr ground state by light-dependent photoconversion or by light-independent thermal reversion,also termed dark *** the term“dark reversion”is j.stified by historical reasons and frequently used in the literature,“thermal reversion”more appropriately describes the process of light-independent but temperature-regulated Pfr relaxation that not only occurs in darkness but also in light and is used throughout the *** reversion is a critical parameter for the light sensitivity of phytochrome-mediated responses and has been studied for decades,often resulting in contradictory *** reversion is an intrinsic property of the phytochrome molecules but can be modulated by intra-and intermolecular interactions,as well as biochemical modifications,such as *** this review,we outline the research history of phytochrome thermal reversion,highlighting important predictions that have been made before knowing the molecular *** further summarize and discuss recent findings about the molecular mechanisms regulating phytochrome thermal reversion and its functional roles in light and temperature sensing in plants.

关键词： phytochrome phyA phyB thermal reversion dark reversion in vivo spectroscopy

Effect of quantum therapy on pork quality

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

j.urnal of Zhej.ang University-Science B(Biomedicine & Biotechnology) 2011年第11期12卷 892-899页

作者： Martin BODNáR j.zef nagy Peter POPELKA Beáta KORéNEKOVá j.n MAANGA Alena nagyOVá Private Veterinary Clinique Kremnická 9040 11 Kosicethe Slovak Republic Department of Food Hygiene and Technology University of Veterinary Medicine and Pharmacy in KosiceKomenského 73041 81 Kosicethe Slovak Republic Department of Environment Veterinary Legislation and EconomicsInstitute of Forensic and Public Veterinary MedicineUniversity of Veterinary Medicine and Pharmacy in KosiceKomenského 73041 81 Kosicethe Slovak Republic

In this study the impact of quantum therapy on meat quality of slaughtered pigs was *** this purpose the pigs were treated with different doses of magnet-infrared-laser(MIL) *** were divided into four groups according to radiation doses(4096,512,and 64 Hz,and control without application),which were applied in the lumbar area of musculus longissimus dorsi(loin) at various time intervals prior to the slaughter(14 d,24 h,and 1 h).Animals were slaughtered and the meat quality was evaluated by determining of pH value(1,3,and 24 h post slaughter),drip loss,colour,and lactic acid and phosphoric acid *** therapy can be used in various fields of veterinary medicine as are surgery and orthopaedics,internal medicine,dentistry,pulmonology,gastroenterology,gynaecology,urology,nephrology,and *** results achieved showed that MIL radiation used in a short period before slaughter(1 h) can cause a change in the meat quality,as reflected by the non-standard development of pH values,increases in drip loss,and changes of meat colour.

关键词： Quantum therapy Meat quality Colour Drip loss Lactic acid pH

Kinetic parameter estimation for cooling crystallization process based on cell average technique and automatic differentiation

在线全文

学校读者我要写书评

暂无评论

Chinese j.urnal of Chemical Engineering 2020年第6期28卷 1637-1651页

作者： Feiran Sun Tao Liu Yi Cao Xiongwei Ni Zoltan Kalman nagy Key Laboratory of Intelligent Control and Optimization for Industrial Equipment of Ministry of Education Dalian University of TechnologyDalian 116024China School of Control Science and Engineering Dalian University of TechnologyDalian 116024China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027China School of Engineering and Physical Science Heriot-Watt UniversityEdinburghUK Davidson School of Chemical Engineering Purdue UniversityWest LafayetteIndiana 47907United States

In this paper,a cell average technique(CAT)based parameter estimation method is proposed for cooling crystallization involved with particle growth,aggregation and breakage,by establishing a more efficient and accurate solution in terms of the automatic differentiation(AD)*** overcome the deficiency of CAT that demands high computation cost for implementation,a set of ordinary differential equations(ODEs)entailed from CAT based discretized population balance equation(PBE)are solved by using the AD based high-order Taylor ***,an AD based trust-region reflective(TRR)algorithm and another interior-point(IP)algorithm are established for estimating the kinetic parameters associated with particle growth,aggregation and *** a result,the estimation accuracy can be further improved while the computation cost can be significantly reduced,compared to the existing *** examples from the literature are used to illustrate the accuracy and efficiency of the AD-based CAT,TRR and IP algorithms in comparison with the existing ***,seeded batch cooling crystallization experiments ofβform L-glutamic acid are performed to validate the proposed method.

关键词： Cooling crystallization Population balance model Cell average technique Parameter estimation Automatic differentiation

Catalytic behavior in propane aromatization using GA-MFI catalyst

在线全文

学校读者我要写书评

暂无评论

Chinese j.urnal of Chemical Engineering 2017年第12期25卷 1863-1870页

作者： Alfredo Aloise Enrico Catizzone Massimo Migliori j.nos B.nagy Girolamo Giordano University of Calabria Department of Environmental and Chemical Engineering Via P. Bucci 1-87036 Rende CS Italy

Ga-Al-MFI samples were synthesized in hydrothermal conditions from gels of composition 1.08CH3NH2- 0.134TPABr-1SiO2-xAl2O3-yGa2O3-40H2O at 175 ℃ for 7 days, with x = 0.005 and 0.0025, y = 0.005, 0,010 and 0.020. The samples were characterized by XRD, BET measurements, thermal analysis （TGA-DTA） atomic absorption and high resolution solid state MAS 27Al and 71Ga NMR measurements. The aromatization of propane was studied as catalytic test. The activity and selectivity of the catalysts were determined for benzene, toluene and xylenes on the one hand and for methane and ethane on the other hand. The most active sample was obtained with the highest Ga/AI ratio. For this sample, the BTX selectivity obtained by aromatization was always higher than the hydrocracking selectivity leading to methane and ethane. The relative amount of toluene was higher than that of benzene and ofxylenes. The samples were deactivated by coke formation that was revealed more severe for the most active sample,

关键词： Propane aromatization Gallium ZSM-5 Coke formation Catalyst deactivation

Real-world challenges for multi-agent reinforcement learning ingrid-interactive buildings

在线全文

学校读者我要写书评

暂无评论

Energy and AI 2022年第4期10卷 161-170页

作者： Kingsley Nweye Bo Liu Peter Stone Zoltan nagy Intelligent Environments Laboratory Department of CivilArchitectural and Environmental EngineeringThe University of Texas at Austin301 E.Dean Keeton St.ECJ 4.200Austin78712-1700TXUSA Department of Computer Science The University of Texas at Austin2317 SpeedwayGDC 2.302Austin78712-1700TXUSA

Building upon prior research that highlighted the need for standardizing environments for building controlresearch, and inspired by recently introduced challenges for real life reinforcement learning (RL) control, herewe propose a non-exhaustive set of nine real world challenges for RL control in grid-interactive buildings(GIBs). We argue that research in this area should be expressed in this framework in addition to providing astandardized environment for repeatability. Advanced controllers such as model predictive control (MPC) andRL control have both advantages and disadvantages that prevent them from being implemented in real worldproblems. Comparisons between the two are rare, and often biased. By focusing on the challenges, we caninvestigate the performance of the controllers under a variety of situations and generate a fair comparison.

关键词： Grid-interactive buildings Benchmarking Reinforcement learning