نتایج جستجو برای: and gasoline

تعداد نتایج: 16828450  

2012
Meghan R. Busse Christopher R. Knittel Florian Zettelmeyer

Many consumers are keenly aware of gasoline prices, and consumer responses to gasoline prices have been well studied. In this paper, by contrast, we investigate how gasoline prices affect the automobile industry: manufacturers and dealerships. We estimate how changes in gasoline prices affect equilibrium prices and sales of both new and used vehicles of different fuel economies. We investigate ...

Journal: :Environmental science & technology 2009
Drew R Gentner Robert A Harley Angela M Miller Allen H Goldstein

On- and off-road mobile sources are the dominant contributors to urban anthropogenic volatile organic compound (AVOC) emissions. Analyses of gasoline samples from California for both summer and winter indicate significant differences in liquid fuel and vapor chemical composition due to intentional seasonal adjustments. Ambient concentrations of 55 VOCs were measured via in situ gas chromatograp...

Journal: :Environmental Health Perspectives 1993
E Reese R D Kimbrough

The acute toxicity of gasoline; its components benzene, toluene, and xylene; and the additives ethanol, methanol, and methyl tertiary butyl ether are reviewed. All of these chemicals are only moderately to mildly toxic at acute doses. Because of their volatility, these compounds are not extensively absorbed dermally unless the exposed skin is occluded. Absorption through the lungs and the gastr...

Journal: :Environmental science & technology 2013
Drew R Gentner David R Worton Gabriel Isaacman Laura C Davis Timothy R Dallmann Ezra C Wood Scott C Herndon Allen H Goldstein Robert A Harley

Motor vehicles are major sources of gas-phase organic carbon, which includes volatile organic compounds (VOCs) and other compounds with lower vapor pressures. These emissions react in the atmosphere, leading to the formation of ozone and secondary organic aerosol (SOA). With more chemical detail than previous studies, we report emission factors for over 230 compounds from gasoline and diesel ve...

2006
M. A. Medinsky

The toxicity of chemicals in mixtures such as gasoline may differ greatly from that observed when the chemicals are tested as pure compounds. For example, metabolic activation is the critical first step in the development of toxicity after exposure to benzene. Gasoline components inhibit benzene metabolism and thus reduce benzene's toxicity. The extent to which inhibition occurs depends on the ...

2014
Giovanni Micale Alfredo Pulvirenti Rosalba Giugno Alfredo Ferro

The analysis of structure and dynamics of biological networks plays a central role in understanding the intrinsic complexity of biological systems. Biological networks have been considered a suitable formalism to extend evolutionary and comparative biology. In this paper we present GASOLINE, an algorithm for multiple local network alignment based on statistical iterative sampling in connection ...

2013
S. Murugan L. M. Das A. Kuruvilla M. Crook K. Chaney A. C. Humphries

In the present study, the effects of bioethanolunleaded gasoline blends on engine performance were investigated in a spark ignition engine. Fuel containing 100% ethanol (E100), fuel blend containing 40% bioethanol by volume (E40) and 100% unleaded gasoline (E0) were tested and the test results were compared. As the result of the study, it was found that the use of unleaded gasoline and bioethan...

2004
Wen Yu América Morales

Gasoline blending is an important unit operation in gasoline industry. A good model for the blending system is beneficial for supervision operation, prediction of the gasoline qualities and realizing model-based optimal control. Gasoline blending process involves two types proprieties: static blending property and dynamic property of blending tanks. Since the blending cannot follow the ideal mi...

Journal: :International journal of occupational and environmental health 2005
William Kovarik

The author describes the controversy about the use of tetraethyl lead (TEL) as a gasoline additive. Early warnings were ignored by industry, and as leaded gasoline became more profitable, scientists willing to support industry were financed as guardians of the scientific criteria for lead's health impacts. Controversy erupted in 1924 after refinery accidents left workers dying from violent insa...

Journal: :international journal of environmental research 0

bioethanol made from lignocelluloses biomass resources, provides unique environmental, economic and strategic benefits, when compared to gasoline as automobile fuel. to be able to substitute gasoline by bioethanol, one should over come many obstacles, including the production of furfural and hydroxyl-methyl furfural, which are produced when cellulosic materials are treated in the presence of ac...

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