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Convective dynamics of traveling autocatalytic fronts in a modulated gravity field

28-10-2014 | Dezso Horvath; Marcello Antonio Budroni; Peter Baba; Laurence Rongy; Anne De Wit; Kerstin Eckert; Marcus J. B. Hause ..., Physical Chemistry Chemical Physics, 2014

When traveling in thin solution layers, autocatalytic chemical fronts may be deformed and accelerated by convective currents developing because of density and surface tension gradients related to concentration and thermal gradients across the front. On earth, both buoyancy and Marangoni related ...

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Wireless Electrosampling of Heavy Metals for Stripping Analysis with Bismuth-Based Janus Particles

24-10-2014 | Hanna Sopha; Jérome Roche; Ivan Švancara; Alexander Kuhn, Analytical Chemistry, 2014

In this contribution, a wireless method for the electrolytic sampling of heavy metals at special bismuth-modified particles is presented. For the first time, glassy carbon beads were asymmetrically modified with bismuth using bipolar electrochemistry. The resulting chemically asymmetric beads, ...

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Local Supersaturation Dictated Branching and Faceting of Submicrometer PbS Particles with Cubic Growth Habit

23-10-2014 | Mingzhu Liu; Mei Leng; Dan Liu; Fanglin Chen; Chengyu Li; Cheng Wang, Inorganic Chemistry, 2014

Hierarchical cubelike submicrometer PbS particles consisting of truncated octahedrons, cuboctahedrons, and cubes were prepared in ethylene glycol solution under favorable high mole ratio of thiourea (Tu) to Pb(AC)2 (RS/Pb) via a pumping process. A qualitative analysis based on the classical ...

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Materials, Vol. 7, Pages 7145-7156: Co-Precipitation of YAG Powders for Transparent Materials: Effect of the Synthesis Parameters on Processing and Microstructure

22-10-2014 | Palmero, Paola ; Traverso, Rebecca, Materials, 2014

The fabrication of transparent polycrystalline Y3Al5O12 (YAG) is still a challenge, requiring the achievement of highly pure and fully dense, homogeneous materials. An important role is played by the powder characteristics: pure, fine and unagglomerated powders are essential for achieving full ...

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Time- and Concentration-Dependent Reactivity of Cys, Hcy, and GSH on the Diels–Alder-Grafted 1,3,5-Tris Conjugate of Calix[6]arene To Bring Selectivity for Cys: Spectroscopy, Microscopy, and Its Reactivity in Cells

22-10-2014 | V. V. Sreenivasu Mummidivarapu; Deepthi S. Yarramala; Karuna Kumar Kondaveeti; Chebrolu P. Rao, The Journal of Organic Chemistry, 2014

Herein we report the synthesis and characterization of 7-oxanorbornadiene (OND)-appended 1,3,5-tris conjugate of calix[6]arene (L2). L2 has been shown to exhibit selective reactivity toward cysteine (Cys) over homocysteine (Hcy) and glutathione (GSH) under stoichiometric conditions. The ...

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pH-Responsive Anionic Wormlike Micelle Based on Sodium Oleate Induced by NaCl

22-10-2014 | Hongsheng Lu; Qianping Shi; Zhiyu Huang, Journal of Physical Chemistry B, 2014

A pH-responsive anionic surfactant wormlike micellar system induced by NaCl has been developed. In this work, the anionic surfactant, sodium oleate (NaOA) solutions, transforms from low-viscosity fluid into high-viscoelastic solution induced by NaCl of 200 mM to 350 mM concentration. According to ...

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Full factorial experimental design applied to oxalic acid photocatalytic degradation in TiO2 aqueous suspension

21-10-2014 | Author(s): N. Barka , M. Abdennouri , A. Boussaoud , A. Galadi , M. Baâlala , M. Bensitel , A. Sahibed-Dine , ..., Arabian Journal of Chemistry, 2014

Publication date: November 2014 Source:Arabian Journal of Chemistry, Volume 7, Issue 5 Author(s): N. Barka , M. Abdennouri , A. Boussaoud , A. Galadi , M. Baâlala , M. Bensitel , A. Sahibed-Dine , K. Nohair , M. Sadiq Full factorial experimental design technique was used to study ...

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Adsorption of Proteins at the Solution/Air Interface Influenced by Added Nonionic Surfactants at Very Low Concentrations for Both Components. 2. Effect of Different Surfactants and Theoretical Model

21-10-2014 | V. B. Fainerman; M. Lotfi; A. Javadi; E. V. Aksenenko; Yu. I. Tarasevich; D. Bastani; R. Miller, Langmuir, 2014

The influence of the addition of the nonionic surfactants dodecyl dimethyl phosphine oxide (C12DMPO), tetradecyl dimethyl phosphine oxide (C14DMPO), decyl alcohol (C10OH), and C10EO5 at concentrations between 10–5 and 10–1 mmol/L to solutions of β-casein (BCS) and β-lactoglobulin (BLG) at a fixed ...

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Interactions between a Series of Pyrene End-Labeled Poly(ethylene oxide)s and Sodium Dodecyl Sulfate in Aqueous Solution Probed by Fluorescence

21-10-2014 | Shaohua Chen; Jean Duhamel; Baoliang Peng; Masuduz Zaman; Kam C. Tam, Langmuir, 2014

The interactions between a series of poly(ethylene oxide)s covalently labeled at both ends with pyrene pendants (PEO(X)-Py2, where X represents the number-average molecular weight of the PEO chains and equals 2K, 5K, 10K, and 16.5K) and an ionic surfactant, namely, sodium dodecyl sulfate (SDS), ...

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Luminescence Color Tuning of PtII Complexes and a Kinetic Study of Trimer Formation in the Photoexcited State

20-10-2014 | T. Kayano, S. Takayasu, K. Sato, K. Shinozaki, Chemistry - A European Journal, 2014

Abstract We investigated the luminescence properties and color tuning of [Pt(dpb)Cl] (dpbH=1,3‐di(2‐pyridyl)benzene) and its analogues. An almost blue emission was obtained for the complex [Pt(Fmdpb)CN] (FmdpbH=4‐fluoro‐1,3‐di(4‐methyl‐2‐pyridyl)benzene), modified by the introduction of F and ...

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