Results 11 to 20 of about 37,835 (161)
Dammarane-Type Triterpenoids from The Stembark of Aglaia argentea (Meliaceae)
Jurnal Kimia Valensi, 2018 Two dammarane-type triterpenoids, 20S,24S-epoxy-3α,25-dihydroxydammarane (1) and 3α-acetyl-20S,24S-epoxy-3α,25-dihydroxydammarane (2), have been isolated from the stembark of Aglaia argentea.
Ace Tatang Hidayat +8 more
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Low-energy binding agent for stone wool-based products [PDF]
Нанотехнологии в строительствеIntroduction. The primary objective of this study is to reduce the energy consumption involved in manufacturing mineral wool products by developing an innovative binder based on modified epoxy compounds. To achieve this objective, the potential use of
Aleksey D. Zhukov +4 more
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Scientific Reports, 2022 Bioactive compounds were extracted from a locally available brittle star; Ophiocoma dentata, collected from the Red Sea, Egypt. Two new sesquiterpenoids; 8, 11-epoxy-9(15)-himachaladiene-4-ol (O8-ophiocomane) and, 11-epoxy-9(15)-himachaladiene-4-ol (O7 ...
Shaymaa E. El Feky +7 more
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Учёные записки Казанского университета: Серия Естественные наукиThe geometry and structure of hollow fiber membranes fabricated from polysulfone by the dry-wet phase inversion method were studied with the help of scanning electron microscopy.
N. P. Bezrukov +7 more
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Journal of Pure and Applied Microbiology, 2019 Natural products are an excellent source of therapeutic products which has led to the discovery of many important drugs that play an important role in the treatment of various human diseases.
Chandra Mohan Singh Bisht +7 more
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Effect of Incorporation of Inhibitor Loaded Mesoporous Silica on the Corrosion Behavior of Epoxy Coatings [PDF]
Journal of Ultrafine Grained and Nanostructured Materials, 2013 In this research, mesoporous silica was applied as the host of corrosion inhibitor (molybdate). The loaded mesoporous silica was dispersed in an epoxy matrix. The composite was then coated on the mild steel plate.
Mahdi Yeganeh +2 more
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Molecules, 2012 The 80% ethanol extract of Alstonia yunnanensis afforded five new monoterpenoid indole alkaloids: 11-hydroxy-6,7-epoxy-8-oxo-vincadifformine (1), 14-chloro-15-hydroxy- vincadifformine (2), perakine N4-oxide (3), raucaffrinoline N4-oxide (4), and vinorine
Guobiao Liang +5 more
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Eurasian Chemico-Technological Journal, 2003 New bifunctional oligomers bearing peroxy groups have been synthesized by telomerization in one step reaction. For obtaining oligoperoxides (PO) by telomerization method, epoxide compounds will react with substances containing labile hydrogen atom. Using
M. M. Bratychak +2 more
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Kobunshi Kagaku, 1963 エピクロルヒドリンと, 酢酸・n-ブタノールおよびジシクロヘキシルアミンとの反応速度を種々の温度で求め, この反応の活性化エネルギーとエントロピーを求めた。反応生成物の分析と動力学的に求めた反応次数, および“Modified SN2”反応として推定されるエポキサイドの加水分解反応の活性化エントロピーと, この反応の活性化エントロピーとがかなり良く近似していることなどからエピクロルヒドリンと酢酸および酸触媒によるn-ブタノールとの反応は, さきにエポキサイドの酸触媒加水分解反応に対してP. E. Parker, N. S. Issacsが提唱した“Modified SN2”反応と同様の機構で進み, ジシクロヘキシルアミンとの反応は, N. B.
Hiroshi Kakiuchi, Yoshio Tanaka
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Фізика і хімія твердого тіла, 2017 The comparative analysis of definition of stress state of epoxy compounds by hydrostatic shrinkage and tensometric deformationhas been done. The results of the shrinkage coefficient depending on the selected calculation formula have been shown.Key words ...
H. O. Sirenko +3 more
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