نتایج جستجو برای: heterogenous catalyst
تعداد نتایج: 49145 فیلتر نتایج به سال:
We introduce a new method for performing and miniaturizing many types of heterogeneous catalysis involving nanoparticles. The method makes use of the plasmon resonance present in nanoscale metal catalysts to provide the necessary heat of reaction when illuminated with a low-power laser. We demonstrate our approach by reforming a flowing, liquid mixture of ethanol and water over gold nanoparticl...
This paper studies the design of pension schemes in a society where fertility is endogenous and parents differ in their ability to raise children. In a world with perfect information, a pay-as-you-go social security system is characterized by equal pensions for all but different contributions which may or may not increase with the number of children. Additionally, fertility must be subsidized a...
This paper describes a heterogeneous federated mediators architecture to support querying and cooperation activities. In a lot of situations, the data and program were recorded by different persons, at different times, in different languages, on different fields. All the difference makes the information systems’ heterogeneity. The mediation services are expected to play an important role in hel...
The functional heterogeneity of the ryanodine receptor (RyR) channels in avian cerebellum was defined. Heavy endoplasmic reticulum microsomes had significant levels of ryanodine and inositol 1,4,5-trisphosphate binding. Scatchard analysis and kinetic studies indicated the existence of at least two distinct ryanodine binding sites. Ryanodine binding was calcium-dependent but was not significantl...
Concurrent Engineering supports the cooperation of teams coming from different phases of the engineering process. Mutual understanding between these crossfunctional teams is essential for successful cooperation. One obstacle for mutual understanding is the use of different languages, notations, and representations within different phases of the engineering process. Fine-grained relationships be...
poly (n-bromosuccinimide) (pnbs) as a mild, efficient, non-acidic, polymeric and heterogeneous catalyst was applied for simple conversion of epoxides into thiiranes by treatment with kscn or (nh2)2cs at room temperature. aliphatic and aromatic epoxides converted into their corresponding thiiranes under mild conditions. all reactions proceeded in short reaction times and afforded the correspondi...
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