نتایج جستجو برای: c70 d42
تعداد نتایج: 894 فیلتر نتایج به سال:
Endohedral fullerenes, which can switch between distinct states with different geometries when triggered by external electric fields (EFs), be used as logical devices at the molecular scale. However, movement of electrons around fullerenes exerts an electrostatic shielding effect alleviates Coulomb force experienced endohedral dopants, and thus must properly evaluated for better elucidating swi...
Effects on C60 by thermal fluctuations of phonons, misalignment of C60 molecules in a crystal, and other intercalated impurities (remaining C70, oxygens, and so on) are simulated by disorder potentials. The Su-SchriefferHeeger–type electron-phonon model for doped C60 is solved with gaussian bond disorders and also with site disorders. Sample average is performed
The geometry imposed by the coordination sphere around the metal, together with the choice of the "arms" can be advantageously used to build corannulene-based molecular tweezers, which show great affinities for C60 and C70, as revealed by NMR titration experiments, mass spectroscopy, DFT calculations and the single crystal X-ray structural analysis of the compound C60 ⊂1.
یکی از مسائل مهم در زمینه صادرات گاز طبیعی از طریق خط لوله، نبودن استراتژی مشخص برای قیمتگذاری است و ارائه مکانیسم قیمتگذاری بهینه، همواره یکی از بزرگترین چالشهای قراردادهای صادرات گاز بوده است. در این مقاله یک مکانیسم قیمتگذاری مبتنی بر نظریه بازیها ارائه شده است. این مکانیسم قیمتگذاری مبتنی بر همکاری بین کشورهای تولیدکننده، مصرفکننده و انتقالدهنده گاز تدوین شده است که در صورت پایبند...
Dioxygen is one of the key molecules on Earth. It plays an essential role in the atmosphere, the hydrosphere, the geosphere and not the least the biosphere. Many physiological transformations, chemical reactions, and (bio)technological processes produce or consume O2, while anoxic species, numerous chemical syntheses, and manufacturing protocols demand its complete absence. Its extraterrestrial...
Broadband organic photodetectors (OPDs) can be integrated into various wearable devices and show great application potential in health monitoring other fields. Here, we demonstrated high-performance broadband photomultiplication-type OPDs (PM-OPDs) based on MoO3 trapping electron-assisted hole tunneling injection mechanism with small-molecule lead (II) phthalocyanine (PbPc) C70 fullerene as the...
This paper surveys the literature on group selection. I describe the early contributions and the group selection controversy. I also describe the main approaches to group selection in the recent literature; xation, assortative group formation, and reproductive externalities. Keywords: Altruism; spite; externalities; conformity; xation; signalling JEL Classi cation: C70; D03; D62; D64
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