منابع مشابه
Fluorine.
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Over the past decade, the most significant, conceptual advances in the field of fluorination were enabled most prominently by organo- and transition-metal catalysis. The most challenging transformation remains the formation of the parent C-F bond, primarily as a consequence of the high hydration energy of fluoride, strong metal-fluorine bonds, and highly polarized bonds to fluorine. Most fluori...
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This study attempts to isolate the underlying processing resources of visual attention from the 'cognitive supervision'-working memory, decision processes, but especially awareness-that typically accompanies their allocation. To decouple them, we used the motion aftereffect (MAE) as a passive assay of resource allocation. In our main condition, observers were presented with an adapting field, b...
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The generated resist based defects on the template in addition to the presence of particles and contaminants is critical for ultraviolet curing of nanoimprint lithographic fabrication. This procedure is proven to be suitable for advanced resist material design under the process conditions. Nanoimprint resist material containing an ultraviolet reactive fluorine surfactant was developed to modify...
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Small non-axisymmetric perturbations of poloidally diverted tokamaks create edge stochastic magnetic field lines that connect to material surfaces such as those in the divertors. Separatrix structure calculations show that the distribution of stochastic field lines on the vessel walls is closely related to the topology of homoclinic tangles formed in the perturbed system. Since these tangles pr...
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ژورنال
عنوان ژورنال: Science
سال: 2009
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.326.5957.1164-b