منابع مشابه
Modeling SOA from aromatics
Global modeling of secondary organic aerosol formation from aromatic hydrocarbons: highvs low-yield pathways D. K. Henze, J. H. Seinfeld, N. L. Ng, J. H. Kroll, T. -M. Fu, D. J. Jacob, and C. L. Heald Department of Chemical Engineering, California Institute of Technology, Pasadena, California, USA Aerodyne Research, Inc., Billerica, Massachusetts, USA School of Engineering and Applied Sciences ...
متن کاملContorted polycyclic aromatics.
CONSPECTUS: This Account describes a body of research in the design, synthesis, and assembly of molecular materials made from strained polycyclic aromatic molecules. The strain in the molecular subunits severely distorts the aromatic molecules away from planarity. We coined the term "contorted aromatics" to describe this class of molecules. Using these molecules, we demonstrate that the curved ...
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Fuzzy linear symmetrical bi-level programming is the most extensive problem in multi-level programming. A new method based on tolerance degree has been introduced in this paper. The method mainly concerns the modeling of complicated Supply Chain with bi-level Stackelberg structure. We analyze the reason lead to uncertainties in supply chain, summarize methods of dealing with uncertainties, and ...
متن کاملThe Performance Order of Fuzzy Numbers Based on Bi-symmetrical Weighted Distance
In this paper, a new approach is prposed for ordering fuzzy numbers based on bi-symmetrical weighted distance. The proposed method considers the bi-symmetrical weighted function and the bisymmetrical weighted distance of fuzzy numbers to rank fuzzy numbers. Some examples to compare the advantage of this approch with the existing metric index ranking methods is illustrated. The process to rank t...
متن کاملHydrocarbon Structure and Chemistry: Aromatics
Hydrocarbons are organic compounds consisting of C-C and C-H bonds. Carbon has a valence of four and thus requires four electrons or bonds to complete its octet in the neutral state. Hydrogen has a valence of one and thus requires a single electron or bond to complete its "duet" in the neutral state. Thus in hydrocarbons carbon can form neutral bonding arrangements by forming single bonds with ...
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ژورنال
عنوان ژورنال: Nature
سال: 1952
ISSN: 0028-0836,1476-4687
DOI: 10.1038/169585a0