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You searched for: Publication Year 2015 Remove constraint Publication Year: 2015 Subject term alkadienes Remove constraint Subject term: alkadienes Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Gum Formation in Gasoline and Its Blends: A Review

Author:
Pradelle Florian; Braga Sergio L.; Martins Ana Rosa F. A.; Turkovics Franck; Pradelle Renata N. C.
Source:
Energy & Fuels 2015 v.29 no.12 pp. 7753-7770
ISSN:
1520-5029
Subject:
additives; air; alkadienes; ambient temperature; aromatic hydrocarbons; combustion; durability; ethanol; gasoline; oxygen; renewable energy sources; Brazil
Abstract:
... Gasoline is a volatile mixture of hydrocarbons that is used in spark-ignition (SI) engines. It is a complex mixture composed of olefinic, paraffinic, naphthenic, and aromatic hydrocarbons (C₄–C₁₂), among other substances in a smaller concentration. In several countries, such as Brazil, ethanol is used pure as a renewable fuel for SI engines, especially in flex fuel engines, and/or an additive to i ...
DOI:
10.1021/acs.energyfuels.5b01894

2. Ring-Closing Metathesis of Co2(CO)6–Alkyne Complexes for the Synthesis of 11-Membered Dienediynes: Overcoming Thermodynamic Barriers

Author:
Danilkina Natalia A.; Lyapunova Anna G.; Khlebnikov Alexander F.; Starova Galina L.; Bräse Stefan; Balova Irina A.
Source:
Journal of organic chemistry 2015 v.80 no.11 pp. 5546-5555
ISSN:
1520-6904
Subject:
Gibbs free energy; alkadienes; alkynes; organic chemistry
Abstract:
... The feasibility of ring-closing metathesis (RCM) as a synthetic entry to 10- and 11-membered dienediynes fused to a benzothiophene core was explored by experimental and theoretical investigations. An established sequence of iodocyclization of o-(buta-1,3-diynyl)thioanisoles followed by Sonogashira coupling to form diethynylbenzothiophenes was used to synthesize terminal benzothiophene-fused enediy ...
DOI:
10.1021/acs.joc.5b00409

3. Venom and Dufour's glands of the emerald cockroach wasp Ampulex compressa (Insecta, Hymenoptera, Sphecidae): Structural and biochemical aspects

Author:
Werner Gnatzy; Jan Michels; Walter Volknandt; Stephan Goller; Stefan Schulz
Source:
Arthropod structure & development 2015 v.44 no.5 pp. 491-507
ISSN:
1467-8039
Subject:
4',6-diamidino-2-phenylindole; Ampulex compressa; Dufour's gland; alkadienes; alkanes; bladder; droplets; epithelium; glycoproteins; insects; lipid content; lipids; microvilli; muscle fibers; polypeptides; secretion; staining; striated muscle; venoms; volatile compounds
Abstract:
... The digger wasp species Ampulex compressa produces its venom in two branched gland tubules. They terminate in a short common duct, which is bifurcated at its proximal end. One leg is linked with the venom reservoir, the other one extends to the ductus venatus. Each venom gland tubule possesses, over its entire length, a cuticle-lined central duct. Around this duct densely packed class 3 gland unit ...
DOI:
10.1016/j.asd.2015.08.008

4. The evolution of symmetrical snapping in termite soldiers need not lead to reduced chemical defence

Author:
Pavlína Kyjaková; Klára Dolejšová; Jana Krasulová; Lucie Bednárová; Romana Hadravová; Radek Pohl; Robert Hanus
Source:
Biological journal of the Linnean Society 2015 v.115 no.4 pp. 818-825
ISSN:
0024-4066
Subject:
Termitidae; alkadienes; arthropods; chemical structure; diterpenoids; evolution; head; muscles; soldier insects; tropics
Abstract:
... Termite soldiers use a multitude of defensive strategies, often combining mechanical weapons with defensive chemicals secreted from their frontal gland. In higher termites (Termitidae), both these weapons are situated in the head of the soldiers. Their simultaneous occurrence is supposed to be subjected to energetic and spatial constraints and the resulting trade‐off often leads to a full developm ...
DOI:
10.1111/bij.12540