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Synergistic effect between silicone‐containing macromolecular charring agent and ammonium polyphosphate in flame retardant polypropylene

25-10-2014 | Xuejun Lai, Changyu Yin, Hongqiang Li, Xingrong Zeng, Journal of Applied Polymer Science, 2014

ABSTRACT A novel silicone‐containing macromolecular charring agent (Si‐MCA) was synthesized via polycondensation, and it was combined with ammonium polyphosphate (APP) to flame retard polypropylene (PP). The results showed that Si‐MCA exhibited a good synergistic effect with APP in flame ...

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Mass spectrometric de novo sequencing of natural non‐tryptic peptides: comparing peculiarities of collision‐induced dissociation (CID) and high energy collision dissociation (HCD)

24-10-2014 | Tatyana Yu. Samgina, Egor A. Vorontsov, Vladimir A. Gorshkov, Konstantin A. Artemenko, Roman A. Zubarev, Albert T. L ..., Rapid Communications in Mass Spectrometry, 2014

RATIONALE Mass spectrometry has shown itself as the most efficient tool for the sequencing of peptides. However, de novo sequencing of novel natural peptides is significantly more challenging in comparison with the same procedure applied for the tryptic peptides. To reach the goal in this case ...

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Sulfur‐Impregnated Core–Shell Hierarchical Porous Carbon for Lithium–Sulfur Batteries

24-10-2014 | Fei‐Fei Zhang, Gang Huang, Xu‐Xu Wang, Yu‐Ling Qin, Xin‐Chuan Du, Dong‐Ming Yin, Fei Liang, Li‐Min Wang, Chemistry - A European Journal, 2014

Abstract Core–shell hierarchical porous carbon spheres (HPCs) were synthesized by a facile hydrothermal method and used as host to incorporate sulfur. The microstructure, morphology, and specific surface areas of the resultant samples have been systematically characterized. The results ...

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Energies, Vol. 7, Pages 6837-6855: A New System to Estimate and Reduce Electrical Energy Consumption of Domestic Hot Water in Spain

24-10-2014 | Gutierrez-Escolar, Alberto ; Castillo-Martinez, Ana ; Gomez-Pulido, Jose M.; Gutierrez-Martinez, Jose-Maria ; Stapic ..., Energies, 2014

Energy consumption rose about 28% over the 2001 to 2011 period in the Spanish residential sector. In this environment, domestic hot water (DHW) represents the second highest energy demand. There are several methodologies to estimate DHW consumption, but each methodology uses different inputs and ...

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Ultrahigh-Resolution Differential Ion Mobility Separations of Conformers for Proteins above 10 kDa: Onset of Dipole Alignment?

23-10-2014 | Alexandre A. Shvartsburg, Analytical Chemistry, 2014

Biomacromolecules tend to assume numerous structures in solution or the gas phase. It has been possible to resolve disparate conformational families but not unique geometries within each, and drastic peak broadening has been the bane of protein analyses by chromatography, electrophoresis, and ion ...

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Carbon Financing of Household Water Treatment: Background, Operation and Recommendations to Improve Potential for Health Gains

23-10-2014 | James M. Hodge; Thomas F. Clasen, Environmental Science & Technology, 2014

Household water treatment (HWT) provides a means for vulnerable populations to take charge of their own drinking water quality as they patiently wait for the pipe to finally reach them. In many low-income countries, however, promoters have not succeeded in scaling up the intervention among the ...

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mFES: A Robust Molecular Finite Element Solver for Electrostatic Energy Computations

23-10-2014 | I. Sakalli; J. Schöberl; E. W. Knapp, Journal of Chemical Theory and Computation, 2014

We present a robust method for the calculation of electrostatic potentials of large molecular systems using tetrahedral finite elements (FE). Compared to the finite difference (FD) method using a regular simple cubic grid to solve the Poisson equation, the FE method can reach high accuracy and ...

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Study on the solid phase extraction and spectrophotometric determination of cobalt with 5-(2-benzothiazolylazo)-8-hydroxyquinolene

21-10-2014 | Author(s): Alaa S. Amin, Arabian Journal of Chemistry, 2014

Publication date: November 2014 Source:Arabian Journal of Chemistry, Volume 7, Issue 5 Author(s): Alaa S. Amin A highly sensitive, selective and rapid method for the determination of cobalt based on the rapid reaction of cobalt(II) with 5-(2-benzothiazolylazo)-8-hydroxyquinolene BTAHQ and ...

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High-Precision Temperature Determination of Evaporating Light-Absorbing and Non-Light-Absorbing Droplets

21-10-2014 | G. Derkachov; D. Jakubczyk; M. Woźniak; J. Archer; M. Kolwas, Journal of Physical Chemistry B, 2014

Models describing evaporation or condensation of a droplet have existed for over a century, and the temporal evolutions of droplet radius and temperature could be predicted. However, the accuracy of results was questionable, since the models contain free parameters and the means of accurate ...

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The negligible chondritic contribution in the lunar soils water [Earth, Atmospheric, and Planetary Sciences]

21-10-2014 | Alice Stephant; François Robert, Proceedings of the National Academy of Sciences current issue, 2014

Recent data from Apollo samples demonstrate the presence of water in the lunar interior and at the surface, challenging previous assumption that the Moon was free of water. However, the source(s) of this water remains enigmatic. The external flux of particles and solid materials that reach the ...

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