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Link, Michael F.,Kim, Jounghwa,Park, Gyutae,Lee, Taehyoung,Park, Taehyun,Babar, Zaeem Bin,Sung, Kijae,Kim, Pilho,Kang, Seokwon,Kim, Jeong Soo,Choi, Yongjoo,Son, Jihawn,Lim, Ho-Jin,Farmer, Delphine K. Elsevier 2017 Atmospheric environment Vol.156 No.-
<P>A vehicle fleet representative of passenger vehicles driven in the Seoul Metropolitan Region was investigated for primary emissions and secondary chemistry. Exhaust was photochemically oxidized in a flow reactor to determine the ammonium nitrate (NH4NO3) aerosol formation potential from vehicles of gasoline, diesel and liquid petroleum gasoline (LPG) fuel types. Secondary formation of aerosol NH4NO3, was larger than primary emissions for all vehicle fuel types except diesel, for which negligible secondary NH4NO3 production was observed. Although diesel vehicles emitted more primary nitrogen oxides than other vehicle types, ammonia emitted from gasoline and liquid petroleum gasoline fuels types limited the secondary production of NH4NO3. The results suggest that gasoline and liquid petroleum gasoline vehicles with three-way catalysts could be an important source of ammonia for NH4NO3 aerosol formation in ammonia-limited environments, including the Seoul Metropolitan Region. (C) 2017 Published by Elsevier Ltd.</P>
Link, J.M.,Yager, P.M.,Anjos, J.C.,Bediaga, I.,Castromonte, C.,Machado, A.A.,Magnin, J.,Massafferri, A.,de Miranda, J.M.,Pepe, I.M.,Polycarpo, E.,dos Reis, A.C.,Carrillo, S.,Cuautle, E.,Sá,nchez Elsevier 2009 Physics letters: B Vol.681 No.1
<P><B>Abstract</B></P><P>Using data from FOCUS (E831) experiment at Fermilab, we present a model independent partial-wave analysis of the <SUP>K−</SUP><SUP>π+</SUP> S-wave amplitude from the decay <SUP>D+</SUP>→<SUP>K−</SUP><SUP>π+</SUP><SUP>π+</SUP>. The S-wave is a generic complex function to be determined directly from the data fit. The P- and D-waves are parameterized by a sum of Breit–Wigner amplitudes. The measurement of the S-wave amplitude covers the whole elastic range of the <SUP>K−</SUP><SUP>π+</SUP> system.</P>
Establishing Greener Products and Manufacturing Processes
Linke, Barbara,Huang, Yu-Chu,Dornfeld, David 한국정밀공학회 2012 International Journal of Precision Engineering and Vol.13 No.7
Today producers are becoming more responsible for their products, not only because of legal requirements but also to gain a competitive edge, as consumers are increasingly considering the broader impacts of their purchases. As a result, companies are beginning to address the ecological impacts of products and manufacturing processes in addition to the economic considerations. The environmental impact of products can be reduced during manufacturing, e.g. by greener processes, greener process chain, or leveraging manufacturing. This paper reviews actual research on greening products and production at the University of California, Berkeley and lays the foundation for future research directions. The present research includes approaches to enhance Life Cycle Assessment Methods, understand the life cycle of different products, improve manufacturing processes and revise supply chain decisions. Leveraging manufacturing implies higher environmental burden in the production phase can be offset with much larger eco-efficiency in the product use phase. The described approaches present ongoing work and will support sustainable production practices.
Establishing Greener Products and Manufacturing Processes
Barbara Linke,Yu-Chu Huang,David Dornfeld 한국정밀공학회 2012 International Journal of Precision Engineering and Vol. No.
Today producers are becoming more responsible for their products, not only because of legal requirements but also to gain a competitive edge, as consumers are increasingly considering the broader impacts of their purchases. As a result,companies are beginning to address the ecological impacts of products and manufacturing processes in addition to the economic considerations. The environmental impact of products can be reduced during manufacturing, e.g. by greener processes, greener process chain, or leveraging manufacturing. This paper reviews actual research on greening products and production at the University of California, Berkeley and lays the foundation for future research directions. The present research includes approaches to enhance Life Cycle Assessment Methods, understand the life cycle of different products,improve manufacturing processes and revise supply chain decisions. Leveraging manufacturing implies higher environmental burden in the production phase can be offset with much larger eco-efficiency in the product use phase. The described approaches present ongoing work and will support sustainable production practices.