نتایج جستجو برای: noble gasses
تعداد نتایج: 10362 فیلتر نتایج به سال:
We present a study of the isoelectronic Pt2Ng2F4 and [Au2Ng2F4]2+ species with noble gas atoms (Ng = Kr, Xe, Rn) acting as links bridging the two noble metal atoms. The stability of the species is investigated using several thermodynamic, kinetic and reactivity indicators. The results are compared against [AuXe4]2+, which is thermodynamically unstable in the gas phase but is stabilized in the s...
Attributing the accusation of being “shi‘r” (poetry) to the noble Qur’ān and the accusation of being a “shā‘ir” to the noble Prophet (s) were among the accusations made by the polytheists in order to reject the divinity of the Qur’ān and consequently to deny the prophetic mission of the Prophet (s). Although there have been suggested different viewpoints with regard to the intention of the poly...
The unique capacity of localized surface plasmon resonance (LSPR) offers a new opportunity to overcome the limited efficiency of semiconductor photocatalyst. Here we unravel that LSPR, which usually occurs in noble metal nanoparticles, can be realized by hydrogen doping in noble-metal-free semiconductor using TiO2 as a model photocatalyst. Moreover, its LSPR is located in infrared region, which...
......................................................................................................................................... 1 Chapter 1: Introduction ............................................................................................................... 2 1.1. Background ..........................................................................................................
Marrocchi et al. (2005) reported that low-temperature fractions of heavy noble gases were largely removed upon pyridine treatment of the Orgueil CI meteorite. As pyridine is known to induce the swelling of the macromolecular network of organic matter, they concluded that the low-temperature phase Q is macromolecular organic carbon. However, Busemann et al. (2008) showed that pyridine had no sig...
The natural or induced development of noble rot caused by the fungus Botrytis cinerea during the late stages of grapevine (Vitis vinifera L.) berry ripening is used in some traditional viticulture areas to produce high-quality wines such as Sauternes and Tokaji. In this research, we wanted to verify if by changing the environmental conditions during post-harvest withering we could induce the no...
Noble metal nanocrystals own high chemical stability, unique plasmonic and distinctive catalytic properties, making them outstanding in many applications. However, their practical applications are limited by their high cost and scarcity on the earth. One promising strategy to solve these problems is to boost their catalytic performance in order to reduce their usage amount. To realize this targ...
In-situ homogeneous dispersion of noble metals in three-dimensional graphene sheets is a key tactic for producing macroscopic architecture, which is desirable for practical applications, such as electromagnetic interference shielding and catalyst. We report a one-step greener approach for developing porous architecture of 3D-graphene/noble metal (Pt and Ag) nanocomposite monoliths. The resultin...
A study was designed to compare the color components and color stability of red wine from Noble (Vitis rotundifolia) and Cabernet Sauvignon (Vitis vinifera) at four pH levels (2.8, 3.0, 3.3, 3.8). Noble browned to a much greater extent and lost more color after 10 and 16 months than did Cabernet, and Noble did not increase in chemical age (level of polymeric anthocyanin) to nearly the extent th...
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