Synthesis of 6, 12-Dihydro-1, 4, 7, 10-tetrahydroxy-5, 6, 11, 12-tetraaza naphthacene
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چکیده
منابع مشابه
Running head : Ecological effects of zoning 1 2 3 4 5 6 7 8 9 10 11 12
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متن کاملSynthesis of new polyurethanes based on 5, 6, 7, 8 – tetrabromo – 2, 3 – dihydro – 1, 4 – phthalazine dione
In this work, 5,6,7,8-Tetrabromo-2,3-dihydro-2,3-bis(2-hydroxyethyl)phthalazine-1,4-dione is synthesized by the reaction of 5,6,7,8-tetrabromo-2,3-dihydrophthalazine-1,4-dione with 2-bromoethanol in the presence of triethylamine. The obtained monomer was polymerized with different diisocyanates, including hexamethylenediisocyanate (HMDI), tolylene-2,4-diisocyanate (TDI), isophoronediisocyanate ...
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40 A global coupled climate model representative of the current generation of models is 41 shown to simulate most first order aspects of El Niño events, their teleconnections over 42 North America, and the associated observed patterns of extremes in present-day climate. 43 Future El Niño teleconnection patterns over the U.S. are projected to shift eastward and 44 northward due in part to the di...
متن کامل1 2 3 4 5 6 7 8 Perception of sinewave vowels 9 10 11
46 There is a significant body of research examining the intelligibility of sinusoidal replicas of 47 natural speech. Discussion has followed about what the sinewave speech phenomenon might 48 imply about the mechanisms underlying phonetic recognition. However, most of this work has 49 been conducted using sentence material, making it unclear what the contributions are of 50 listeners’ use of l...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1959
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.80.5_569