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Erratum to: “Occurrence of 2-phenylphenol in food paper packages”
Walter de Gruyter GmbH - - 2014
Lenka Votavová, Kristýna Hanušová, Lukáš Vápenka, J. Dobiáš, František Kvasnička
Abstract The original version of the article was published in Cent. Eur. J. Chem. 12(11) (2014) pp. 1162–1168. Unfortunately, the original version of this article contains some mistakes in the Tables 2 and 3. Corrected versions of the tables are presented below.
On the inverse miniemulsion copolymerization and terpolymerization of acrylamide, N, N′-methylenebis(acrylamide) and methacrylic acid
Walter de Gruyter GmbH - - 2003
Ignác Capek
AbstractThe kinetics of free-radical copolymerization and terpolymerization of acrylamide (AAm), N, N′-methylenebis(acrylamide) (MBA) and methacrylic acid (MA) in the inverse water/monomer/cyclohexane/Tween 85 miniemulsion was investigated. Polymerizable sterically-stable miniemulsions were formulated in cyclohexane as a continuous medium. Polymerizations are very ...... hiện toàn bộ
Comprehensive two-dimensional liquid chromatography — practical impacts of theoretical considerations. A review
Walter de Gruyter GmbH - Tập 10 Số 3 - Trang 844-875 - 2012
Pavel Jandera
Abstract A theory of comprehensive two-dimensional separations by liquid chromatographic techniques is overviewed. It includes heart-cutting and comprehensive two-dimensional separation modes, with attention to basic concepts of two-dimensional separations: resolution, peak capacity, efficiency, orthogonality and selectivity. Particular attention is ...... hiện toàn bộ
Aqueous phenol and ethylene glycol solutions in electrohydrodynamic liquid bridging
Walter de Gruyter GmbH - - 2011
Mathias Eisenhut, Xinghua Guo, Astrid H. Paulitsch-Fuchs, Elmar Fuchs
AbstractThe formation of aqueous bridges containing phenol and ethylene glycol as well as bisphenol-A, hydrochinone and p-cresol under the application of high voltage DC (“liquid bridges”) is reported. Detailed studies were made for phenol and glycol with concentrations from 0.005 to 0.531 mol L−1. Conductivity as well as substance and mass transfers through these ...... hiện toàn bộ
Ab initio study of hydrogen bond complexes of ring compounds containing the H2N-C=Y moiety with water
Walter de Gruyter GmbH - Tập 8 Số 5 - Trang 1117-1126 - 2010
Tao Liu, Guodong Liu, Zhangyu Yu
AbstractAb initio calculations, including natural charge population and natural resonance theory analyses, have been carried out to study the two-way effects between hydrogen bonds (H-bonds) and the intramolecular resonance effect by using the H-bonded complexes of ring compounds containing the H2N-C=Y moiety (C=Y bond is contained in the six-membered or five-membe...... hiện toàn bộ
Cấu trúc và các tính chất quang phổ của cinnamoyl pyrones và vinylogs của chúng Dịch bởi AI
Walter de Gruyter GmbH - Tập 8 Số 2 - Trang 347-355 - 2010
Dmytro A. Tykhanov, Irina I. Serikova, F. G. Yaremenko, Alexander D. Roshal
Tóm tắtPhân tích 1H-NMR và hóa lý lượng tử về độ ổn định của các tautomer của các dẫn xuất cinnamoyl pyrone và vinylogs đã được nghiên cứu. Mối quan hệ giữa cấu trúc của tautomer ổn định nhất và các tính chất quang phổ của nó đã được điều tra. Đã xác định rằng tautomer có độ ổn định cao nhất (88–100 molar %) có cấu trúc α-pyrone và thể hiện một cấu hình trans trong...... hiện toàn bộ
A silica-silver nanocomposite obtained by sol-gel method in the presence of silver nanoparticles
Walter de Gruyter GmbH - Tập 11 Số 10 - Trang 1689-1698 - 2013
Carmen Racleş, Alexandra Nistor, Maria Cazacu
Abstract Silver nanoparticles (AgNPs) were obtained by a redox reaction, using a glucose-containing cyclosiloxane as a reduction agent and stabilizer. Then the AgNPs aqueous solution was used as the reaction medium for the sol-gel process, starting from tetraethylorthosilicate (TEOS) as silica precursor. The nanocomposite material resulted (SilAg) af...... hiện toàn bộ
Mechanical, thermal and surface properties of polyacrylamide/dextran semi-interpenetrating network hydrogels tuned by the synthesis temperature
Walter de Gruyter GmbH - - 2013
Maria Valentina Dinu, Maria Cazacu, Ecaterina Stela Drăgan
AbstractThe mechanical, rheological, thermal, and surface behaviors of three polyacrylamide/dextran (PAAm/Dx) semi-interpenetrating polymer network (semi-IPN) hydrogels, prepared at 22°C, 5°C and −18°C, were investigated. The results were compared with those obtained on cross-linked PAAm without Dx synthesized under the same conditions. Hydrogels prepared at the lo...... hiện toàn bộ
Determination of 210Po content of vietnamese tobacco samples
Walter de Gruyter GmbH - Tập 12 Số 11 - Trang 1127-1132 - 2014
Tibor Kovács, Mária Horváth, Zoltán Sas, Bui Dac Dung, Tran Khanh Minh
Abstract Smoking is one of the leading causes of preventable death. In recent years, numerous countries have initiated the prohibition of smoking in restaurants, workplaces and public spaces. The Vietnamese government intends to follow the precautions against public smoking as well. Over and above the number of some hazardous chemical components foun...... hiện toàn bộ
Interfacial behavior of water bound to nitrocellulose containing residual nitric and sulfuric acids
Walter de Gruyter GmbH - - 2014
Vladimir M. Gun’ko, Waldemar Tomaszewski, Т.V. Krupska, Konstantin V. Turov, Р. Лебода, В.В. Туров
AbstractTo prepare nitrocellulose (NC), microcrystalline cellulose was treated in a mixture of nitric and sulfuric acids. Prepared NC containing a small amount of acids was studied at a different hydration degree (h = 10–1000 mg g−1) in different dispersion media (chloroform-d, acetone-d6 or their mixtures) using low-temperature 1H NMR spectroscopy. The hydration d...... hiện toàn bộ
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