large scale preparation of nanoporous tio2
large scale preparation of nanoporous tio2
... Access Large- scale preparation of nanoporous TiO 2 film on titanium substrate with improved photoelectrochemical performance Beihui Tan, Yue Zhang and Mingce Long * Abstract Fabrication of three-dimensional ... A: Large- scale preparation of ordered titania nanorods with enhanced photocatalytic activity. Langmuir 2005, 21:6995–7002. 9. Wu YH, Long MC, Cai WM, Dai SD, Chen C...
Ngày tải lên: 06/05/2014, 08:55
Tài liệu Báo cáo khoa học: "Inducing Gazetteers for Named Entity Recognition by Large-scale Clustering of Dependency Relations" ppt
... a large amount of dependency relations in Web documents. To our knowledge, no one else has performed this type of clustering on such a large scale. Wikipedia also produced a large gazetteer of ... con- struction of large- scale MN clusters. We demonstrated with the IREX dataset for the Japanese NER that using the constructed clus- ters as a gazetteer (cluster gazetteer) is a...
Ngày tải lên: 20/02/2014, 09:20
A simple large scale synthesis of very long aligned silica nanowires
... production of large- quanti- ties of high-purity (no metal catalysis contamina- tion) and ultralong (millimeters) SiO 2 nanowires (most of the wires have uniform diameters of $50 nm, while some of them ... Introduction In the development of nanotechnology, nano- scale optical wires are of both scientific and tech- nological interest because of their potential appli- cations...
Ngày tải lên: 16/03/2014, 15:03
Báo cáo khoa học: "A System for Large-Scale Acquisition of Verbal, Nominal and Adjectival Subcategorization Frames from Corpora" pot
... state -of- the-art performance on all three sets. 1 Introduction Research into automatic acquisition of lexical in- formation from large repositories of unannotated text (such as the web, corpora of ... inspection of unclassifiable examples during development of the classifier. These consisted of e.g. some occurrences of phrasal verbs with complex complementation and with flexib...
Ngày tải lên: 17/03/2014, 04:20
Báo cáo khoa học: "The key role of semantics in the development of large-scale grammars of natural language" pdf
... The key role of semantics in the development of large- scale grammars of natural language Valia Kordoni Department of Computational Linguistics University of Saarland PO Box 15 11 ... Germany kordoni@coli.uni—sb.de Abstract The aim of this paper is to show how large- scale (computational) gram- mars of natural language benefit from an organization of semantics which is...
Ngày tải lên: 17/03/2014, 22:20
facile large scale synthesis of ws2 nanotubes from wo3 nanorods prepared by a hydrothermal route
... Controlled removal of the sur- factants from the mesolamellar precursors resulted in WO 3 nanorods in large quantity [26]. Recently, the synthesis of WO 3 nanorodsat a large scale [27] has been ... high yield of multiwalled WS 2 nanotubes. 2. Experimental 2.1. Synthesis of WO 3 nanorods An aqueous solution containing a mixture of 1.32 g of (NH 4 ) 10 W 12 O 41 ·7H 2 O and 2....
Ngày tải lên: 19/03/2014, 16:48
large scale synthesis of single-crystal hexagonal tungsten trioxide
... Laboratory of Photochemistry, Beijing National Laboratory for Molecular (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, PR China b Graduate school of the Chinese Academy of ... most of the previous approaches only lead to the formation of monolinic W 18 O 49 one-dimen- sional (1D) nanostructure. And the studies on 1D nanoscaled h-WO 3 are still rare...
Ngày tải lên: 20/03/2014, 13:04
Báo cáo khoa học: "Large Scale Acquisition of Paraphrases for Learning Surface Patterns" potx
... be the set of all phrases of the form Xp i Y where p i ∈ P . Let S i,X be the set of words that occur in position X of p i and S i,Y be the set of words that occur in posi- tion Y of p i . Let ... (either because of scale or data quality). Our approach on the other hand, finds surface paraphrases; it is more scalable and robust due to the use of simple POS tagging. Also, our...
Ngày tải lên: 23/03/2014, 17:20
Sustainability of an energy conversion system in Canada involving large-scale integrated hydrogen production using solid fuels
... Canadian energy market for large- scale hydrogen production, but achievement of this level of sustainability, or a higher level, requires technological improvements of some of the processes, which ... value of 0.7 is assigned to them, which is the highest value for efficiencies of all the items in the system. 4. Design: Impact of design of a process or an element on s...
Ngày tải lên: 05/09/2013, 14:58
Tài liệu The Anatomy of a Large-Scale Hypertextual Web Search Engine ppt
... involves interacting with hundreds of thousands of web servers and various name servers which are all beyond the control of the system. In order to scale to hundreds of millions of web pages, Google has ... of millions of web pages involving a comparable number of distinct terms. They answer tens of millions of queries every day. Despite the importance of large- sca...
Ngày tải lên: 24/01/2014, 20:20