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Mahmoudan Alireza Samadof Parviz Sadeghzadeh Milad Jalili Mohamad Sharifpur Mohsen Kumar Ravinder 《Journal of Thermal Analysis and Calorimetry》2021,145(3):1163-1189
Journal of Thermal Analysis and Calorimetry - Waste heat recovery systems are proposed to be an environmentally benign and a cost-effective application for efficiency improvement of energy... 相似文献
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In this work, catalytic performance of a molybdenum Schiff base complex‐supported magnetic support as a nanocatalyst was evaluated for the preparation of 2‐amino‐4H‐benzo[h]chromenes through one‐pot, three component reactions of 1‐naphthol, various aldehydes, and malononitrile under solvent‐free conditions. A promising greener and eco‐friendly method with a short reaction time, high yield of products, and simple work‐up procedure was achieved. The nanocatalyst could be easily separated and regenerated from reaction media by an external magnet and reused at least seven consecutive times with small drops in its catalytic performance. 相似文献
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New poly‐phenylenevinylenes PPVs containing 1,3,4‐thiadiazole as candidates for organic semiconductors have been theoretically studied at density functional theory (DFT) and time‐dependent DFT levels. This study has been conducted in order to investigate the geometrical and electronic properties as well as the conductivity of a series of PPV–thiophene–1,3,4–thiadiazole–thiophene (H–PhTAT–H) containing –CHO, –CH2–P(=O)(OCH3)2, and phenyl–CHO (PhCHO) terminal groups. The impact of terminal groups on the optical bandgaps, electron affinity, LUMO energy, and intramolecular reorganization energy was studied for different oligomers and for a limit polymer. The incorporation of terminal groups did not affect the chain length evolution and the vertical transition energy Evert value for a polymer limit compared with the unsubstituted oligomer (H–PhTAT–H). All studied properties showed that CHO–PhTAT–PhCHO and H–PhTAT–H oligomers can be considered as n‐type semiconductors. 相似文献
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Milad Javanmard Hossein Ali Asadi-Gharneh Pejman Nikneshan 《Natural product research》2018,32(14):1738-1743
Dog rose (Rosa canina L.) is a wild native species in Iran, with a significant genetic diversity. This plant serves as a rich source of vitamin C, anthocyanins, phenolic contents and carotenoids. Rose hips have been used in several food products, as well as perfumery and cosmetics industries. In this research, we investigate biochemical characteristics of five dog rose ecotypes (Kopehjamshid, Zarneh, Miyankish, Aghcheh and Sadeghiyeh), that were collected from the central part of Iran (Isfahan province). Amounts of vitamin C, total carotenoids, total phenolic contents, total anthocyanins, macro and micro minerals were measured. Seed oil are extracted by soxhlet method and analysed by gas chromatography. The macro and micro minerals levels in the fruit vary significantly among these regions. The results of this study demonstrate that dog rose have great diversity and can be used in breeding programmes in order to increase nutrient values as a food resource additive. 相似文献
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Wen Fu Edison P. Liang Milad Fatenejad Donald Q. Lamb Michael Grosskopf Hye-Sook Park Bruce Remington Anatoly Spitkovsky 《High Energy Density Physics》2013,9(2):336-340
Supersonic plasma outflows driven by multi-beam, high-energy lasers, such as Omega and NIF, have been and will be used as platforms for a variety of laboratory astrophysics experiments. Here we propose a new way of launching high density and high velocity, plasma jets using multiple intense laser beams in a hollow ring formation. We show that such jets provide a more flexible and versatile platform for future laboratory astrophysics experiments. Using high resolution hydrodynamic simulations, we demonstrate that the collimated jets can achieve much higher density, temperature and velocity when multiple laser beams are focused to form a hollow ring pattern at the target, instead of focused onto a single spot. We carried out simulations with different ring radii and studied their effects on the jet properties. Implications for laboratory collisionless shock experiments are discussed. 相似文献
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Milad Jahanshad Mohammadreza Manafi Seyed Mahmoud Mousavi-Safavi Seyed Saied Homami Majid Ghazanfarpour-Darjani 《Tetrahedron letters》2019,60(44):151216
A domino ring opening/cross-coupling reaction of oxiranes with terminal alkynes and aryl iodides has been developed. This transformation serves as a protocol for the synthesis of homo-alkyne ether skeletons from the readily available starting materials. The success of the reaction has dependence on catalyst/ligand system of choice. The synthesis utility of the alkyne ether skeletons in formation of chromane skeleton has also been studied. 相似文献
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In the present paper we investigate tachyonic chameleon scalar field and present the phase space analysis for four different combinations of the tachyonic potential \(V(\phi )\) and the coupling function \(f(\phi )\) of the chameleon field with matter. We find some stable solution in which accelerated expansion of the universe is satisfied. In one case where both \(f(\phi )\) and \(V(\phi )\) are exponential a scaling attractor was found that can give rise to the late-time acceleration of the universe and alleviate the coincidence problem. 相似文献