نتایج جستجو برای: زیولیت itq
تعداد نتایج: 304 فیلتر نتایج به سال:
Since 1950s, the world marine fish resources have suffered the serious over-fishing. The marine resources subsequently have been in great danger. Quite diverse management regimes are used to regulate the fisheries globally. Among them, the individual transferable quota (ITQ) system is claimed to achieve the sustainable fisheries. The report is to explore the Icelandic ITQ system carefully. This...
در این پایان نامه از روش شبیه سازی دینامیک مولکولی برای مطالعه ی نفوذ مولکول های دی سولفید کربن در زئولیت itq-7 با کد isv و فرمول شیمیایی si64o128 استفاده شده است. دینامیک مولکولی روشی برای شبیهسازی رفتار ترمودینامیکی مواد در سه فاز جامد، مایع وگاز با استفاده از نیروها، سرعتها و مکان ذرات است. در بین این عوامل، نیرو مهمترین عامل است. در شبیهسازی دینامیک مولکولی کلاسیک، نیرو از پتا...
A new germanosilicate zeolite (denoted as ITQ-53) with extra-large pores has been synthesised using tri-tertbutylmethylphosphonium cation as the organic structure directing agent (OSDA). Rotation electron diffraction (RED) was used to identify ITQ-53 from an initially-synthesised sample containing impurities, and to solve its structure. The structure was refined against PXRD data of pure ITQ-53...
Most existing learning to hash methods assume that there are sufficient data, either labeled or unlabeled, on the domain of interest (i.e., the target domain) for training. However, this assumption cannot be satisfied in some real-world applications. To address this data sparsity issue in hashing, inspired by transfer learning, we propose a new framework named Transfer Hashing with Privileged I...
• Avelino Corma's group at the Instituto de Catálisis y Peroleoquímica, seed of Tecnología Química (ITQ). The beginnings ITQ in Valencia, creating a way doing science. From laboratory to industry, some success stories. Basic science applied solve real industrial problems, one founding pillars ITQ. ITQ, multidisciplinary approach research field zeolites.
A multi-dimensional extra-large pore silicogermanate zeolite, named ITQ-54, has been synthesised by in situ decomposition of the N,N-dicyclohexylisoindolinium cation into the N-cyclohexylisoindolinium cation. Its structure was solved by 3D rotation electron diffraction (RED) from crystals of ca. 1 μm in size. The structure of ITQ-54 contains straight intersecting 20 × 14 × 12-ring channels alon...
ITQ regulation relies on a decentralized market mechanism and a single price to allocate access to a stock of fish. The resulting allocation will not be fully efficient if the stock being allocated is heterogeneous or if there are potential gains from centralized coordination of harvesting effort. If stocks are heterogeneous in their density, location, or unit value during the season, harvester...
This paper summarizes activities and results from the quality assessment project ITQ, “Quality certification of IT support at work”, which was performed by Swedish researchers in close co-operation with trade unions in 1999-2002. The ITQ project is part of a network, UsersAward, which continues to work for the goal to develop and maintain a strategy for good software products on the work floor ...
The approach of the atomic pair distribution function (PDF) technique to study the structure of nanocrystalline materials is considered and successfully applied to V2O5.nH2O xerogel and Cs intercalated inside the pores of the zeolite ITQ-4. We find that V2O5.nH2O is an assembly of almost perfect bi-layers of VO5 units encapsulating the water molecules. Inside the nanopores of ITQ-4 the cesium i...
An ITQ system that relies on a single price to allocate harvest rights will not be fully efficient unless the stock in question is uniform in terms of its economic value. Variations in the location or density of portions of a stock can give rise to corresponding variations in value, leading harvesters to compete for the best portions of the stock. The size of the waste that can arise from this ...
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