Text mining, also known as knowledge discovery from text, and document information mining, refers to the process of extracting interesting patterns from very large text corpus for the purposes of discovering knowledge. Text mining is an interdisciplinary field involving information retrieval, text understanding, information extraction, clustering, categorization, visualization, database technol...

the essential oil from flowering aerial parts of nepeta macrosiphon boiss. growing wild in kermanshah province, iran, was analyzed by gc/ms. this essential oil was prepared by a modified likens-nickerson’s simultaneous distillation-extraction (sde) method. forty-five compounds consisting 95.1% of the total components were identified from the oil obtained with a yield of 0.1%w/w. among them, spa...

Using GC-MS the volatile composition of Jasonia glutinosa D. C., was studied by comparing two different methods for the isolation of a volatile fraction: distillation from the fresh plant in order to obtain the essential oil, and direct thermal desorption (DTD). Compared with essential oil extraction the main advantages of the DTD technique are the smaller sample amount required, and the increa...

This year we took part in the genomic information retrieval and information extraction tasks, as well as the named page and topic distillation searches. In carrying out the last two tasks, we made use of link anchor information and document content in order to construct Web page representatives. This type of document representation uses multi-vectors to highlight the importance of both hyperlin...

This paper addresses the task of providing extended responses to questions regarding specialized topics. This task is an amalgam of information retrieval, topical summarization, and Information Extraction (IE). We present an approach which draws on methods from each of these areas, and compare the effectiveness of this approach with a query-focused summarization approach. The two systems are ev...

This paper describes the application of multivariable sequential relay autotuning techniques to a pilot scale distillation system under industrial DCS monitoring and control environment. Implementation aspects arising in any realistic industrial environment are fully discussed such as the architecture for on-line communication and information extraction as well as valve hysteresis and backlash ...

Stable isotopic analysis of water in plant, soil, and hydrological studies often requires the extraction of water from plant or soil samples. Cryogenic vacuum extraction is one of the most widely used and accurate extraction methods to obtain such water samples. Here, we present a new design of a cryogenic vacuum extraction system with 18 extraction slots and an innovative mechanism to aerate t...

Objective The aim is to verify our earlier suggestion which accounted for the dynamics of volatile compounds extraction from herb Prunella vulgaris (PV) using steam distillation. Then, anti-oxidative property PV explored.
 Methods Because we suggested that inefficient distillation was due obstruction a mass in flow path, used hydro tried eliminate this obstacle. We GC-MS characterize extra...

A comparative study of ultrasound-assisted extraction (UAE) and hydro-distillation was performed for fast extraction of estragole from tarragon (Artemisia dracunculus L.) dried leaves. Several influential parameters of the UAE procedure in the extraction of estragole (type of solvent, extraction cycles, solvent to material ratio, irradiation time and particle size) were investigated an...

After crawling and keyword indexing, the next wave that has made a significant impact on Web search is topic distillation: analyzing properties of the hyperlink graph for enhanced ranking of Web pages in response to a query. Hyperlink induced topic search (HITS) and PageRank (used in Google) are two examples. The linear algebra involved in HITS and PageRank is standard, but selecting the releva...