Results 21 to 30 of about 349,509 (342)

Comprehensive Analysis of the Copper Exchange Implemented in Ammonia and Protonated Forms of Mordenite Using Microwave and Conventional Methods

Molecules, 2019
This article presents the results of a comprehensive study of copper-exchanged mordenite samples prepared from its ammonia and protonated forms (Si/Al = 10) using two different ion exchange methods: conventional and microwave (MW)-assisted.
Marina G. Shelyapina, Ekaterina A. Krylova, Yurii M. Zhukov, Irina A. Zvereva, Inocente Rodriguez-Iznaga, Vitalii Petranovskii, Sergio Fuentes-Moyado   +6 more
doaj   +1 more source

Effect of Zinc Oxide Nanoparticles on Mechanical, Thermal and Biodegradability of Gelatin-Based Biocomposite Properties Films [PDF]

علوم و تکنولوژی پلیمر, 2019
Hypothesis: The basic limitation of biopolymers compared to the petroleum-based polymers is their weak physical and mechanical properties. In recent years, efforts have been made to properly incorporate nanoparticles into the polymer to reduce the ...
Sahar Eshagh, Mohammad Hossein Abbaspour-Fard, Mohammad Tabasizadeh, Fereshteh Hosseini   +3 more
doaj   +1 more source

Influence of class F fly ash and silica nano-micro powder on water permeability and thermal properties of high performance cementitious composites

Science and Engineering of Composite Materials, 2013
This paper investigates the influence of class F fly ash and silica nano-micro powder on water permeability and thermal properties of high performance concrete (HPC) as one of the most important cementitious composites.
Jalal Mostafa
doaj   +1 more source

Galactic Archeology with RAVE and TGAS [PDF]

Proceedings of the International Astronomical Union, 2017
AbstractThe 5th RAVE data release is based on 520,781 spectra (R ≈ 7500 in the CaT region at 8410 - 8795Å) of 457,588 unique stars. RAVE DR5 provides radial velocities, stellar parameters and individual abundances for up to seven elements and distances found using isochrones for a considerable subset of these objects.
Steinmetz, Matthias, collaboration, the RAVE   +1 more
openaire   +3 more sources

In situ synthesis, crystal structures, topology and photoluminescent properties of poly[di-μ-aqua-diaqua[μ3-4-(1H-tetrazol-1-id-5-yl)benzoato-κ4O:O,O′:O′′]barium(II)] and poly[μ-aqua-diaqua[μ3-4-(1H-tetrazol-1-id-5-yl)benzoato-κ4O:O,O′:O′]strontium(II)]

Acta Crystallographica Section E: Crystallographic Communications, 2020
Two alkaline-earth coordination compounds, [Ba(C8H4N4O2)(H2O)4]n, (I), and [Sr(C8H4N4O2)(H2O)3]n, (II), from the one-pot hydrolysis transformation of benzoyl chloride and the in situ self-assembled [2 + 3] cycloaddition of nitrile are presented.
Mohamed Abdellatif Bensegueni, Aouatef Cherouana, Hocine Merazig   +2 more
doaj   +1 more source

Thermal Properties of Wood-Plastic Composites Prepared from Hemicellulose-extracted Wood Flour [PDF]

علوم و تکنولوژی پلیمر, 2013
Hemicellulose of Southern Yellow Pine wood spices was extracted by pressurized hot water at three different temperatures: 140°C, 155°C and 170°C. Compounding with PP (polypropylene) was performed by extrusion after preparing wood flour and sieving to ...
A.A. Enayati, O. Hosseinaei, S. Wang, S.A. Mirshokraie, M. Tajvidi   +4 more
doaj   +1 more source

Transient Global Amnesia (TGA): Sex-Specific Differences in Blood Pressure and Cerebral Microangiopathy in Patients with TGA [PDF]

Journal of Clinical Medicine, 2022
Transient global amnesia (TGA) is defined by an acute memory disturbance of unclear aetiology for a period of less than 24 h. Observed psychological, neuroanatomical and hormonal differences between the sexes in episodic memory suggest sex-specific differences in memory disorders such as TGA.
Rogalewski, Andreas, Beyer, Anne, Friedrich, Anja, Zuhorn, Frédéric, Klingebiel, Randolf, Woermann, Friedrich G., Oertelt-Prigione, Sabine, Schäbitz, Wolf-Rüdiger   +7 more
openaire   +2 more sources

Thermal properties and morphology of polypropylene based on exfoliated graphite nanoplatelets/nanomagnesium oxide

Open Engineering, 2018
Polypropylene/exfoliated graphite nanoplatelet (xGnP) composites reinforced with 2 wt.% nano-magnesia (n-MgO) have been successfully fabricated using an injection moulding machine.
Alateyah A. I.
doaj   +1 more source

Lignin Quantification of Papyri by TGA—Not a Good Idea [PDF]

Molecules, 2021
Papyri belong to the oldest writing grounds in history. Their conservation is of the highest importance in preserving our cultural heritage, which is best achieved based on an extensive knowledge of the materials’ constituents to choose a tailored conservation approach. Thermogravimetric Analysis (TGA) has been widely employed to quantify cellulose and
Florian Bausch, Dickson D. Owusu, Paul Jusner, Mario J. Rosado, Jorge Rencoret, Sabine Rosner, José C. del Río, Thomas Rosenau, Antje Potthast   +8 more
openaire   +4 more sources

Prospect and Potential of Adansonia digitata L. (Baobab) Bast Fiber in Composite Materials Reinforced with Natural Fibers. Part1: Fiber Characterization

Journal of Natural Fibers, 2021
Sustainability and environmental consciousness directed attention toward research and innovation in the field of natural fiber composites. Baobab (Adansonia digitata L.) is tropical tree of the silk-cotton family that is native to Africa. The aim of this
Hafiz A. Eltahir, Weilin Xu, Xin Lu, Chen Li, Lipei Ren, Jiaxin Liu, Mohammed Awad Abedalwafa   +6 more
doaj   +1 more source