Results 301 to 310 of about 5,741,184 (344)
Some of the next articles are maybe not open access.
Some Aspects of Metal Extraction
1983Metal extraction is usually referred to as hydrometallurgy and it deals with extraction of metals from acidified aqueous solutions. For this purpose the aqueous solution, that is the raffinate phase, is contacted with an organic extract phase. However, since metal ions are insoluble in organic solvents, the latter must contain a water-insoluble ...
openaire +2 more sources
Technological Aspects of Jatropha Oil Extraction
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2009The technology of the extraction process of jatropha oil from its seeds using a solvent extraction technique was studied. The extraction process was carried out at room temperature using solvent-to-solid ratios ranging from 2 to 5 L/kg in a single and two successive stages.
openaire +2 more sources
Intelligent fake reviews detection based on aspect extraction and analysis using deep learning
Neural computing & applications (Print), 2022Gourav Bathla +4 more
semanticscholar +1 more source
Some interesting aspects of the extraction of zinc [PDF]
Pure and Applied Chemistry, 1969 Abstract
openaire +1 more source
Aspect extraction and classification for sentiment analysis in drug reviews
Journal of Intelligence and Information Systems, 2022Mostafa Imani, S. Noferesti
semanticscholar +1 more source
A mixed unsupervised method for aspect extraction using BERT
Multimedia tools and applications, 2022G. Chauhan +3 more
semanticscholar +1 more source
Quality aspects of traditional and industrial Kava-extracts
Phytomedicine, 2003An aqueous decoction of Piper methysticum has been used since centuries of Pacific Island at social religious-ceremonial and social events without hepatotoxic side effects in contrast to the speculation on industrial Kava preparations. It was assumed that the traditional non-alcoholic drink contains a spectrum of other constituents compared to the ...
D. Loew, Gerhard Franz
openaire +3 more sources
Towards jointly extracting aspects and aspect-specific sentiment knowledge
Proceedings of the 21st ACM international conference on Information and knowledge management, 2012In this paper, we aim to jointly extract aspects and aspect-specific sentiment knowledge from online reviews, where the sentiment knowledge refers to the aspect-specific opinion words along with their aspect-aware sentiment polarities. To this end, we propose a Joint Aspect/Sentiment model (JAS). JAS detects aspect-specific opinion words by integrating
Zheng Lin +4 more
openaire +2 more sources
Coupling Global and Local Context for Unsupervised Aspect Extraction
Conference on Empirical Methods in Natural Language Processing, 2019Aspect words, indicating opinion targets, are essential in expressing and understanding human opinions. To identify aspects, most previous efforts focus on using sequence tagging models trained on human-annotated data.
Ming Liao +5 more
semanticscholar +1 more source
Extraction instrumentale difficile : Aspects obstétricaux
2011L’extraction instrumentale reste un mode d’aide a l’expulsion frequent. En France, 12 % des naissances se font par voie basse instrumentale, 4,8 % par ventouse, 3,7 % par forceps et 3,5 % par spatules. L’extraction instrumentale doit etre sans danger pour la mere et le fœtus, a condition de respecter certaines regles et de ne faire que des applications
F. Sergent +4 more
openaire +2 more sources