air law Articles

  • Differential impacts of smoke-free laws on indoor air quality

    The authors assessed the impacts of two different smoke-free laws on indoor air quality. They compared the indoor air quality of 10 hospitality venues in Lexington and Louisville, Kentucky, before and after the smoke-free laws went into effect. Real-time measurements of particulate matter with aerodynamic diameter of 2.5 µm or smaller (PM2.5) were made. One Lexington establishment was excluded ...

  • The mechanism and law of wellbore instability due to drill string impact in air drilling

    Due to the low density and small damping factor of gas, drill string vibration in air drilling is much more violent than that in mud. Drill string impact on wellbore wall has a vital effect on wellbore stability in many cases. However, there are few researches about drill string impact on wellbore wall so far. In this paper, the calculation model of drill string impact on wellbore wall was ...


    By Inderscience Publishers

  • Zero waste in Buenos Aires (Argentina)

    In late 2005, the City Council in Buenos Aires, Argentina unanimously passed a law, “Integral Management Of Solid Urban Waste,” a Zero Waste law. The law sets goals and milestones to reduce the volume of municipal solid waste going to landfill disposal. “The first milestone is 30 percent reduction of waste to landfill by 2010,” says Cecilia Allen of Global Alliance for Incinerator Alternatives' ...


    By BioCycle Magazine

  • Climate change law and litigation in the aftermath of Massachusetts v. EPA

    The case of Massachusetts v. EPA, decided in April 2007 by the U.S. Supreme Court, may be the most important case in the history of environmental law. The author says the Environmental Protection Agency's air program personnel are now straining to grapple with new, enormously consequential legal and policy questions in the aftermath of this ...


    By Bloomberg BNA

  • The US Clean Air Act: Improving air quality and tracking greenhouse gas emissions?

    The US Clean Air Act is a federal law designed to reduce air pollution in order to improve the nation’s overall air quality. The intent of the federal law is to identify and reduce harmful substances that weaken the stratospheric ozone layer and continue to contribute to global climate change.Many of these pollutants, refrigerant gases, or Greenhouse Gases (GHGs) can be found within companies, ...


    By Accruent

  • How to decifer government laws for refrigerant gases (R-22 HCFCs)

    Refrigerant Gas Regulations for R-22 HCFCs: How the Government Mandates Monitoring and TrackingThe U.S. Clean Air Act is a regulation that spells out the EPA's role in air quality, especially in protecting the ozone layer and the tracking and reporting of Greenhouse Gases. The Act is maintained by the House of Representatives. The Clean Air Act has had changes made in the 1990s and again in 2008 ...


    By Accruent

  • A new vision for clean air

    When President George H.W. Bush signed into law the Clean Air Act Amendments (CAAA) of 1990, he put in place a precedent-setting statute that completely revamped our nation’s approach to improving air quality. That statute was an earnest commitment to environmental protection; the comprehensive air pollution control strategy established in it provided state and local regulators with tools to make ...

  • Refrigerant Gases (R-22 HCFCs): Understanding the laws regulating them

    The US Clean Air Act is a congressional law that explains the EPA's task in protecting air quality and the ozone layer. This Act is maintained by the House of Representatives. Major amendments were passed in 1990 and several other changes were made after that with still more pending related to mandatory reporting of Greenhouse Gas (GHG) emissions.Refrigerant gases are those used in climate ...


    By Accruent

  • How California’s greenhouse gas laws can better serve disadvantaged communities

    Environmental justice advocates are working to ensure the state’s efforts to combat climate change benefit everyone — and the lessons can be applied nationwide. It was a time of year that should have been perfect. Warming temperatures marked Southern California’s gentle return to spring. The grass had shifted from drab to glowing green. The sky, which can be pale and ...


    By Ensia

  • Second law analysis of compressible flow through a diffuser subjected to constant wall temperature

    This study presents the investigation of entropy generation in compressible turbulent flow of air through a diffuser. Constant temperature boundary condition is applied at the wall. Two-dimensional solution of velocity and temperature fields are obtained using the CFD code FLUENT. Regions of high entropy generation in the diffuser have been predicted. The desired inlet expansion angle ...


    By Inderscience Publishers

  • External losses in high-bypass turbo fan air engines

    The external irreversible losses of air engines, due to equilibration of the hot and fast exhaust with the environment, are discussed based on the second law of thermodynamics. The effect of the bypass ratio on thermomechanical exergy destruction in the exhaust stream is demonstrated. The analysis gives a strong motivation for the use of high bypass turbo fan engines in modern aircraft.Keywords: ...


    By Inderscience Publishers

  • Comparison between the Chinese EIA Guidelines for Air Dispersion Modelling and the Advanced Air Dispersion Model ADMS

    According to the Environmental Protection Law of P.R. China, and the Environmental Protection Management Method on Construction Projects the Technical Guidelines for Environmental Impact Assessment (EIA) (HJ/T .1~2.3-93) have defined how environmental impact assessment should be carried out for construction projects, in terms of the general principle, methodology, contents and requirements. ...

  • Mining Emissions Effectively Monitored with Micro Pulse LiDAR Technology

    Mining operations include blasting, excavating, scraping, and sifting large amounts of dirt. These activities create dust and other emissions that are transported by air currents to surrounding areas. It is easy to say that dangerous particulate matter (PM) generated by mining should be monitored and kept to a minimum; however, it is very challenging to measure the levels of contaminants in the ...

  • Soil Air Permeability: Threshold Gradient and Anisotropy

    In this study, a triaxial confinement chamber and mass flow meter were used to measure the air permeability of compacted clayey sand specimens. Specimens were extracted at different angles with respect to the vertical direction to measure the anisotropy. The soil was compacted at high water contents below the optimum.At lower gradients, deviations from Darcy´s law were observed. Threshold ...


    By ASTM International

  • Observations of long term air entrapment affecting runoff and water table

    Air entrapment plays a significant role in controlling infiltration and observed depth to water table in shallow water table environments. The current study incorporates multi-event field measurements with varying antecedent conditions and numerical modelling, using HYDRUS-1D to quantify the variation of air pressurisation values. The observations of water table in the field data depart ...


    By Inderscience Publishers

  • War of words waged over Big Apple’s e-waste law

    A legal battle over an e-waste law enacted in New York City could have far-reaching implications throughout the United States and create a “chilling effect” on existing state programs and pending legislation, according to a leading environmental organization. That scenario, however, is being dismissed by industry trade groups representing manufacturers, retailers and distributors of electronics ...

  • Big Clear Sky – A short history of the Clean Air Act

    Major advances over 50 years have led to cleaner air and groundbreaking technology. The detrimental impact of industrialization to air quality in the United States went unchecked through federal legislation for most of the first half of the 20th Century. But following the 1948 industrial catastrophe in Donora, Pennsylvania – where a cloud of smog killed 20 and injured thousands – regulation of ...

  • Second law analysis of transient heat transfer for turbulent flow in a circular tube with baffle inserts

    This paper presents the results of an experimental investigation of transient forced convective heat transfer for turbulent flow of nine circular tubes with baffle plate inserts using different pitch to tube inlet diameter ratios and baffle orientation angles in the range of Reynolds number 3000≤Re≤20000 in the case of constant heat flux. The characteristic parameters of the tubes are: pitch to ...


    By Inderscience Publishers

  • Solutions-IES Completes First Risk-Based Remediation Under New State Law

    A former electronics manufacturing facility in North Carolina (NC) had conducted groundwater remediation since 1991 to remediate low-level chlorinated solvents.  Under RCRA, the originally approved Remedial Action Plan (RAP) recommended pump and treat (P & T with air stripping and carbon) to capture and remove the contaminants.  Upon coming on board the project, Solutions-IES ...


    By Solutions-IES

  • Passive samplers for air quality monitoring in a Brazilian university

    The aim of this paper was to evaluate the applicability of passive samplers for the monitoring and diagnosis of air pollution at Passo Fundo University, focusing on atmospheric pollutants NO 2 and O 3 . The samplers were built in accordance with already verified methodologies and were placed in several locations in the university campus, namely: energy generator, pool heating boiler, ...


    By Inderscience Publishers

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you