Xem 1-20 trên 1165 kết quả Compounds
  • Texture, nutritive values and volatile compounds of Lentinula edodes, Pleurotus ostraetus and Pleroutus sajor-caju mushrooms were determined. The volatiles have been found out with an estimation approach by carrying out gas chromatography and mass spectrophotometer (GS–MS) Library Catalogue comparison. Neither regular increase nor decreases were observed for the values of texture, moisture, ash and protein values of L. eddoes.

    pdf7p the_eye_1991 18-09-2012 16 5   Download

  • (BQ) Part 2 book "Essential chemistry atoms, molecules, and compounds" has contents: The elements, chemical reactions - making molecules, chemical bonds; common compounds, uncommon results.

    pdf81p bautroibinhyen20 06-03-2017 6 5   Download

  • GLAXOWELLCOME Actifed viên nén : hộp 24 viên. Actifed syrup : chai 60 ml. Actifed Compound Linctus : chai 60 ml. Actifed DM : chai 60 ml.

    pdf5p thaythuocvn 27-10-2010 62 4   Download

  • Mapping and classification of chemical compound names are important aspects of the tasks of BioNLP. This paper introduces the architecture of a system for the syntactic and semantic analysis of such names. Our system aims at yielding both the denoted chemical structure and a classification of a given name. We employ a novel approach to the task which promises an elegant and efficient way of solving the problem. The proposed system differs significantly from existing systems, in that it is also able to deal with underspecifying names and class names. ...

    pdf9p hongphan_1 15-04-2013 28 4   Download

  • In this article, compound processing for translation into German in a factored statistical MT system is investigated. Compounds are handled by splitting them prior to training, and merging the parts after translation. I have explored eight merging strategies using different combinations of external knowledge sources, such as word lists, and internal sources that are carried through the translation process, such as symbols or parts-of-speech. I show that for merging to be successful, some internal knowledge source is needed.

    pdf9p bunthai_1 06-05-2013 32 4   Download

  • Hiểu Compound chuyển nhượng C # không cho phép bạn khai báo bất kỳ nhà khai thác giao người dùng định nghĩa. Tuy nhiên, một nhà điều hành phân công hợp chất (như + =) là luôn luôn đánh giá về điều hành liên quan của nó (ví dụ như +).

    pdf1p golly_tit 11-08-2010 40 3   Download

  • Research on the discovery of terms from corpora has focused on word sequences whose recurrent occurrence in a corpus is indicative of their terminological status, and has not addressed the issue of discovering terms when data is sparse. This becomes apparent in the case of noun compounding, which is extremely productive: more than half of the candidate compounds extracted from a corpus are attested only once. We show how evidence about established (i.e.

    pdf8p bunthai_1 06-05-2013 19 3   Download

  • Translating compounds is an important problem in machine translation. Since many compounds have not been observed during training, they pose a challenge for translation systems. Previous decompounding methods have often been restricted to a small set of languages as they cannot deal with more complex compound forming processes. We present a novel and unsupervised method to learn the compound parts and morphological operations needed to split compounds into their compound parts.

    pdf10p hongdo_1 12-04-2013 24 2   Download

  • There are several theories regarding what influences prominence assignment in English noun-noun compounds. We have developed corpus-driven models for automatically predicting prominence assignment in noun-noun compounds using feature sets based on two such theories: the informativeness theory and the semantic composition theory. The evaluation of the prediction models indicate that though both of these theories are relevant, they account for different types of variability in prominence assignment. ...

    pdf5p hongdo_1 12-04-2013 24 2   Download

  • Splitting compound words has proved to be useful in areas such as Machine Translation, Speech Recognition or Information Retrieval (IR). Furthermore, real-time IR systems (such as search engines) need to cope with noisy data, as user queries are sometimes written quickly and submitted without review. In this paper we apply a state-of-the-art procedure for German decompounding to other compounding languages, and we show that it is possible to have a single decompounding model that is applicable across languages. ...

    pdf4p hongphan_1 15-04-2013 21 2   Download

  • We present an algorithm for automatically disambiguating noun-noun compounds by deducing the correct semantic relation between their constituent words. This algorithm uses a corpus of 2,500 compounds annotated with WordNet senses and covering 139 different semantic relations (we make this corpus available online for researchers interested in the semantics of noun-noun compounds). The algorithm takes as input the WordNet senses for the nouns in a compound, finds all parent senses (hypernyms) of those senses, and searches the corpus for other compounds containing any pair of those senses.

    pdf8p hongvang_1 16-04-2013 16 2   Download

  • There is little consensus on a standard experimental design for the compound interpretation task. This paper introduces wellmotivated general desiderata for semantic annotation schemes, and describes such a scheme for in-context compound annotation accompanied by detailed publicly available guidelines. Classification experiments on an open-text dataset compare favourably with previously reported results and provide a solid baseline for future research.

    pdf6p hongvang_1 16-04-2013 23 2   Download

  • Brominated compounds have received much attention recently because their toxic effects, including teratogenicity, carcinogenicity and neutrotoxicity, have been observed, in particular the brominated diphenyl ethers (Darnerud et al., 2001; Linda S. et al. 2003; Peter Alexander et al. 2003, Juliette Legler et al. 2003). The environmental behavior and fate of many brominated compounds are thought to be similar to those of chlorinated pollutants in the environment

    pdf7p uocvong02 24-09-2015 9 2   Download

  • During the last decades, dozens of compounds have been isolated from Mallotus apelta. These compounds which are classified under the categories viz. terpenoids, steroids, flavonoids, cumarino-lignoids, cembrane diterpenoids, and benzopyranoids. They were known to exhibit interesting biological activities. The phytochemical investigations revealed that malloapelta B which was the major component of M. apelta, showed strong NF-B and NFAT transcription factor inhibitory and cytotoxic activities. Numerous studies on the synthesis of some derivatives of malloapelta B were carried out.

    pdf11p uocvong03 24-09-2015 8 2   Download

  • Angelica sinensis (OLiv.) Diels ("Danggui") belongs to the family Umbelliferae. Its rhizomes are reputed to have marked restorative, antianaemic and haemagogic properties. From ethyl acetate and butanol extracts of rhizomes of this plant 8 nitrogen-containing compounds (1-8) have been isolated. Their structures were elucidated by means of MS and NMR spectroscopic methods as 5-oxo-proline, 5-oxo-prolin-ethylester, nicotinamide, tryptophane, perlolidine, 1,2,3,4-tetrahydro-1-methyl- -carboline-3-carboxylic acide, adenosine and uridine.

    pdf6p uocvong04 24-09-2015 9 2   Download

  • The effect of some organic compounds on the activity of chitinase from Serratia marcescens has been investigated. Among these compounds, 1,10-phenanthroline was found to be an inhibitor and ethanol - an activator of the chitinase activity; -’ dipyridyl and Zn2+ do not take any effect on the chitinase activity. In this investigation, the dissociation constant of an chitinase-metalic ion complex (K1) and the inhibition constant (K2) have been estimated with K1 = 0.1 mcM and K2 = 2.667 mM.

    pdf5p uocvong04 24-09-2015 9 2   Download

  • The automatic interpretation of noun-noun compounds is an important subproblem within many natural language processing applications and is an area of increasing interest. The problem is difficult, with disagreement regarding the number and nature of the relations, low inter-annotator agreement, and limited annotated data. In this paper, we present a novel taxonomy of relations that integrates previous relations, the largest publicly-available annotated dataset, and a supervised classification method for automatic noun compound interpretation.

    pdf10p hongdo_1 12-04-2013 15 1   Download

  • There are some sorts of ‘Preposition + Noun’ combinations in Farsi that apparently a Prepositional Phrase almost behaves as Compound Prepositions. As they are not completely behaving as compounds, it is doubtful that the process of word formation is a morphological one. The analysis put forward by this paper proposes “incorporation” by which an No is incorporated to a Po constructing a compound preposition. In this way tagging prepositions and parsing texts in Natural Language Processing is defined in a proper manner. ...

    pdf7p hongvang_1 16-04-2013 20 1   Download

  • We propose a novel method for automatically interpreting compound nouns based on a predefined set of semantic relations. First we map verb tokens in sentential contexts to a fixed set of seed verbs using WordNet::Similarity and Moby’s Thesaurus. We then match the sentences with semantic relations based on the semantics of the seed verbs and grammatical roles of the head noun and modifier. Based on the semantics of the matched sentences, we then build a classifier using TiMBL.

    pdf8p hongvang_1 16-04-2013 16 1   Download

  • This paper proposes a principled approach for analysis of semantic relations between constituents in compound nouns based on lexical semantic structure. One of the difficulties of compound noun analysis is that the mechanisms governing the decision system of semantic relations and the representation method of semantic relations associated with lexical and contextual meaning are not obvious.

    pdf4p bunbo_1 17-04-2013 20 1   Download


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