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1.188 Aktuelle Fachpublikationen zum Thema temperature

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Molecules, Vol. 20, Pages 6488-6503: Copolymers of Vinyl-Containing Benzoxazine with Vinyl Monomers as Precursors for High Performance Thermosets

10.04.2015 | Takeichi, Tsutomu ; Thongpradith, Soulideth ; Kawauchi, Takehiro, Molecules, 2015

A benzoxazine containing a vinyl group (P-4va) was prepared by the reaction of phenol, 4-vinylaniline, and paraformaldehyde. A differential scanning calorimetry (DSC) study revealed that ring-opening polymerization of the benzoxazine and chain polymerization of the vinyl group occurred in the ...

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IJMS, Vol. 16, Pages 7960-7975: Synthesis of Spongy-Like Mesoporous Hydroxyapatite from Raw Waste Eggshells for Enhanced Dissolution of Ibuprofen Loaded via Supercritical CO2

09.04.2015 | Ibrahim, Abdul-Rauf ; Li, Xiangyun ; Zhou, Yulan ; Huang, Yan ; Chen, Wenwen ; Wang, Hongtao ; Li, Jun, International Journal of Molecular Sciences, 2015

The use of cheaper and recyclable biomaterials (like eggshells) to synthesize high purity hydroxyapatite (HAp) with better properties (small particle size, large surface area and pore volume) for applications (in environmental remediation, bone augmentation and replacement, and drug delivery ...

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Energies, Vol. 8, Pages 2701-2713: Melting Behavior and Thermolysis of NaBH4−Mg(BH4)2 and NaBH4−Ca(BH4)2 Composites

08.04.2015 | Ley, Morten B.; Roedern, Elsa ; Thygesen, Peter M. M.; Jensen, Torben R., Energies, 2015

The physical properties and the hydrogen release of NaBH4–Mg(BH4)2 and NaBH4−Ca(BH4)2 composites are investigated using in situ synchrotron radiation powder X-ray diffraction, thermal analysis and temperature programmed photographic analysis. The composite, xNaBH4–(1 − x)Mg(BH4)2, x = 0.4 to ...

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Molecules, Vol. 20, Pages 6033-6047: Ring-Opening Graft Polymerization of Propylene Carbonate onto Xylan in an Ionic Liquid

07.04.2015 | Zhang, Xueqin ; Chen, Mingjie ; Liu, Chuanfu ; Zhang, Aiping ; Sun, Runcang, Molecules, 2015

The amidine organocatalyst 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) is an effective nucleophilic catalyst. Biocomposites with tuneable properties were successfully synthesized by ring-opening graft polymerization (ROGP) of propylene carbonate (PC) onto xylan using DBU as a catalyst in the ionic ...

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Entropy, Vol. 17, Pages 2025-2038: A Method to Derive the Definition of Generalized Entropy from Generalized Exergy for Any State in Many-Particle Systems

07.04.2015 | Palazzo, Pierfrancesco, Entropy, 2015

The literature reports the proofs that entropy is an inherent property of any system in any state and governs thermal energy, which depends on temperature and is transferred by heat interactions. A first novelty proposed in the present study is that mechanical energy, determined by pressure and ...

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Entropy, Vol. 17, Pages 2039-2061: Experimental and Thermoeconomic Analysis of Small-Scale Solar Organic Rankine Cycle (SORC) System

07.04.2015 | Baral, Suresh ; Kim, Dokyun ; Yun, Eunkoo ; Kim, Kyung Chun, Entropy, 2015

A small-scale solar organic Rankine cycle (ORC) is a promising renewable energy-driven power generation technology that can be used in the rural areas of developing countries. A prototype was developed and tested for its performance characteristics under a range of solar source temperatures. The ...

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Sensors, Vol. 15, Pages 8009-8019: Sensing Features of Long Period Gratings in Hollow Core Fibers

03.04.2015 | Iadicicco, Agostino ; Campopiano, Stefania, Sensors, 2015

We report on the investigation of the sensing features of the Long-Period fiber Gratings (LPGs) fabricated in hollow core photonic crystal fibers (HC-PCFs) by the pressure assisted Electric Arc Discharge (EAD) technique. In particular, the characterization of the LPG in terms of shift in resonant ...

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IJMS, Vol. 16, Pages 7535-7550: Enzymatic Synthesis of Magnetic Nanoparticles

03.04.2015 | Kolhatkar, Arati G.; Dannongoda, Chamath ; Kourentzi, Katerina ; Jamison, Andrew C.; Nekrashevich, Ivan ; Kar, Archa ..., International Journal of Molecular Sciences, 2015

We report the first in vitro enzymatic synthesis of paramagnetic and antiferromagnetic nanoparticles toward magnetic ELISA reporting. With our procedure, alkaline phosphatase catalyzes the dephosphorylation of l-ascorbic-2-phosphate, which then serves as a reducing agent for salts of iron, ...

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IJMS, Vol. 16, Pages 7520-7534: A New Series of Kinked Liquid Crystals: 2-(6-Alkoxynaphthalen-2-yl)-6-methoxyquinolines

02.04.2015 | Chia, Win-Long ; Liu, Chih-Wei, International Journal of Molecular Sciences, 2015

A new series of 2-(6-alkoxynaphthalen-2-yl)-6-methoxyquinolines (nO-NpQOMe, n = 3–8) liquid crystal compounds, a linear molecular structure with two kinks, were synthesized using a short two-step reaction with overall yields between 43% and 58%. Spectral analyses were in accord with the expected ...

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IJMS, Vol. 16, Pages 7428-7444: Thermoresponsive Interplay of Water Insoluble Poly(2-alkyl-2-oxazoline)s Composition and Supramolecular Host–Guest Interactions

02.04.2015 | R. de la Rosa, Victor ; Nau, Werner M.; Hoogenboom, Richard, International Journal of Molecular Sciences, 2015

A series of water insoluble poly[(2-ethyl-2-oxazoline)-ran-(2-nonyl-2-oxazoline)] amphiphilic copolymers was synthesized and their solubility properties in the presence of different supramolecular host molecules were investigated. The resulting polymer-cavitand assemblies exhibited a ...

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