نتایج جستجو برای: emissions

تعداد نتایج: 65522  

2001

The Fuel Quality Standards Act 2000, which received Royal Assent on 21 December 2000, provides the framework for a national fuel quality standards regime. This legislation has been developed in response to an urgent need to address the quality of fuel currently available in Australia. New vehicle emission standards, harmonising Australian standards with international vehicle emission standards,...

Journal: :iranian red crescent medical journal 0
elaheh amini family health institute, breastfeeding research center, tehran university of medical sciences, tehran, ir iran zahra kasheh farahani family health institute, breastfeeding research center, tehran university of medical sciences, tehran, ir iran mehdi rafiee samani family health institute, breastfeeding research center, tehran university of medical sciences, tehran, ir iran hamed hamedi family health institute, breastfeeding research center, tehran university of medical sciences, tehran, ir iran ali zamani family health institute, breastfeeding research center, tehran university of medical sciences, tehran, ir iran alireza karimi yazdi family health institute, breastfeeding research center, tehran university of medical sciences, tehran, ir iran

background severe birth asphyxia (apgar < 7 at the 5th minute of birth) is recognized as a hearing loss risk factor by the joint committee on infant hearing (jcih). about half of the newborns with hearing loss do not indicate any sign and risk factor at birth. accordingly, the joint committee recommended performance of hearing screening test in 2000, especially for babies born with risk factors...

Akbari, Tahani, H. Shojaeefard, M. Etghani,

In this study the performance and emissions characteristics of a heavy-duty, direct injection, Compression ignition (CI) engine which is specialized in agriculture, have been investigated experimentally. For this aim, the influence of injection timing, load, engine speed on power, brake specific fuel consumption (BSFC), peak pressure (PP), nitrogen oxides (NOx), carbon dioxide (CO2), Carbon mon...

Journal: :The Science of the total environment 2004
A G Clarke L A Robertson R S Hamilton B Gorbunov

The emission inventory for London indicates that nearly 80% of the particulate emissions derive from vehicular sources. Most of this mass is in the form of ultrafine submicrometer particles which are of concern because of their influence on lung function. The prediction of their dispersion in the atmosphere coupled to the physical and chemical transformations which affect their size distributio...

Journal: :advances in environmental technology 0
nayereh yahyaei department of chemical engineering, shahrood branch, islamic azad university, shahrood, iran javad mousavi department of chemical engineering, gas and petroleum, semnan university, semnan, iran mehdi parvini semnan university pedram mohebi department of chemical engineering, shahrood branch, islamic azad university, shahrood, iran

one pollutant which seriously threatens water resources is dye. therefore, finding a suitable method to separate the dye in water resources is very important. an adsorption process that uses low cost adsorbents is considered as an efficient strategy for this purpose. in this study, erythrosine dye removal from an aquatic environment using natural absorbents, namely sorghum and ziziphus nummular...

Journal: :international journal of energy and environmental engineering 2011
r. g. papagiannakis

reduction of exhaust emissions is a major research task in diesel engine development in view of increasing concerns regarding environmental protection and stringent exhaust gas regulations. simultaneousreduction of nox emissions and particulate matter is quite difficult due to the soot/nox trade-off and isoften accompanied by fuel consumption penalties. towards this aim, automotive engineers ha...

Journal: :international journal of environmental research 2014
b.v. digas v.l. rozenberg a.a. kuklin

the optimization model for evaluating regional and global effects of greenhouse gases reductionpolicies named merge is an actively usable tool for studying some aspects of the problem of climate change.it is first of all destined for the quantitative estimation of emission trajectories and results of applyingabatement measures. in the paper, the emphasis is on the adaptation of the integrated a...

Journal: :international journal of environmental research 0
s. gonzález-ubierna departamento de edafología, facultad de farmacia, universidad complutense de madrid, pza. ramón y cajal s/n (ciudad universitaria), 28040 madrid, spain i. jorge-mardomingo departamento de edafología, facultad de farmacia, universidad complutense de madrid, pza. ramón y cajal s/n (ciudad universitaria), 28040 madrid, spain m.t. cruz departamento de edafología, facultad de farmacia, universidad complutense de madrid, pza. ramón y cajal s/n (ciudad universitaria), 28040 madrid, spain i. valverde departamento de edafología, facultad de farmacia, universidad complutense de madrid, pza. ramón y cajal s/n (ciudad universitaria), 28040 madrid, spain m.a. casermeiro departamento de edafología, facultad de farmacia, universidad complutense de madrid, pza. ramón y cajal s/n (ciudad universitaria), 28040 madrid, spain

this work investigates the effect of the application rate and type of sludge throughout the soilcarbon cycle in a semiarid mediterranean agro-ecosystem. we study the two-year evolution of the variouspools of soil organic and inorganic carbon and their influence on soil respiration. we applied three rates (40, 80 and 160 mg/ha) of two types of sludge –aerobically and anaerobically digested sewag...

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