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UC Riverside team wins EPA design contest with lawnmower exhaust aftertreatment device

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A team of University of California, Riverside Bourns College of Engineering students have won an EPA student design contest for developing an exhaust aftertreatment device that cuts CO, NO x and PM emissions from lawnmowers. The device, with the stainless steel mesh filter and catalyst support structure detached.

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HEI ACES study of lifetime animal exposure to New Technology Diesel Engine exhaust finds no lung cancer

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The first study to conduct a comprehensive evaluation of lifetime exposure to new technology diesel exhaust (NTDE)—i.e., exhaust from heavy-duty diesel engines meeting EPA 2007 and later emissions requirements—has found no evidence of carcinogenic lung tumors. Earlier post.)

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China study connects ozone pollution to cardiovascular health

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Ozone concentrations were lower than the levels capable of influencing pulmonary function, which is the main basis for current regulatory standards. The study, by a team from Duke University, Tsinghua University, Duke Kunshan University and Peking University, appears in the journal JAMA Internal Medicine.

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Study finds high exhaust temperatures within NTE operation for heavy-duty diesels with aftertreatment systems contribute to high nanoparticle concentrations

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The transient results illustrate the gradual formation of the nucleation mode particles with continuous increase in exhaust temperatures. Current 2010 USEPA emissions standards for NO x and PM are set at 0.20 The team used a MY 2007 Volvo MD11 engine compliant with USEPA 2007 emissions standards. Click to enlarge.

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First results from HEI/ACES murine study find few biologic effects from exposure to exhaust from new technology diesel engines

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Environmental Protection Agency (EPA) and the worldwide motor vehicle industry. Hallberg of the University of Texas Medical Branch, Galveston, and their colleagues. HEI is an independent, non-profit research institute funded jointly by the US. McDonald of the Lovelace Respiratory Research Institute, Albuquerque, New Mexico; Jeffrey C.

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UC Riverside team examines influence of mid-and high-level ethanol blends on pollution from GDI flex fuel vehicle

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Data presented as mean ± standard deviation, N=3. The researchers used four fuels: a baseline US EPA Tier 3 E10 fuel; one E10 fuel with higher aromatics content than the baseline E10; an E30 fuel that was splash-blended with the Tier 3 E10; and an E78 fuel. Their paper is published in the ACS journal Energy & Fuels. Yang et al.

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Study Finds Ozone Concentrations at Current Clean Air Standards Levels Can Impair Even Healthy Lungs

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Exposure to ozone at levels currently deemed safe by the NAAQS clean air standards can have a significant and negative effect on lung function, according to researchers at the University of California, Davis. The previous primary and secondary standards were identical 8-hour standards, set at 0.08 Earlier post.).

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