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982 articles for “Natural”
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Research ArticleOpen accessIn the abstractEco-Friendly Synthesis of Fucoidan-Stabilized Gold NanoparticlesKriengsak Lirdprapamongkol, Warangkana Warisnoicharoen, Suwicha Soisuwan, Jisnuson SvastiProblem statement: Metallic gold nanoparticles (AuNPs) are widely used in many applications including medical, pharmaceutical, diagnostics and sensors. The chemical synthesis of AuNPs normally requires synthetic materials which might cause the toxicological concerns. The use of naturally occurring materials like fucoidans for successful synthesis of AuNPs is of interests. Approach: Fucoidans as sulfated polysaccharides from marine algae Cladosiphon okamuranus (o-fucoidan) … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 9,630 accessesView PDFCite
Research ArticleOpen accessIn the abstractOrganic Alternative for Breaking Dormancy in Table Grapes Grown in Hot RegionsConsuelo Corrales-Maldonado, Miguel Angel Martinez-Tellez, Alfonso A. Gardea et al.Problem statement: In warm-winter regions, the need for intervention of chemical means to break bud rest becomes a dominant factor for maintaining economic production of table grapes. However, the problem is more acute when farmers want to grow organic table grapes in the absence of environmentally-friendly budbreak promoters. Approach: This study aimed to evaluate the effect of a mix of … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 2 · 30 Jun 2010 · 8,758 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalytical Study on Fundamental Frequency Contours of Thai Expressive Speech Using Fujisaki's ModelSuphattharachai ChomphanProblem statement: In spontaneous speech communication, prosody is an important factor that must be taken into account, since the prosody effects on not only the naturalness but also the intelligibility of speech. Focusing on synthesis of Thai expressive speech, a number of systems has been developed for years. However, the expressive speech with various speaking styles has not been accomplished. … …Journal of Computer Science, Vol. 6, Issue 1 · 31 Jan 2010 · 7,473 accessesView PDFCite
Research ArticleOpen accessIn the abstractTowards the Development of Speaker-Dependent and Speaker-Independent Hidden Markov Model-Based Thai Speech SynthesisSuphattharachai ChomphanProblem statement: Tone distortion in Thai languages can deteriorate not only the intelligibility of speech but also its naturalness. Therefore, the correctness of tone must be carefully taken into account in continuous speech synthesis. The preliminary work confronted this problem when applying HMM-based speech synthesis to Thai. Approach: This study presented a study on speaker-dependent and speaker-independent Hidden Markov Model … …Journal of Computer Science, Vol. 5, Issue 12 · 31 Dec 2009 · 6,928 accessesView PDFCite
Research ArticleOpen accessIn the abstractDrug Susceptibility and Molecular Epidemiology of Pseudomonas aeruginosa Isolated in a Burn UnitHassan Salimi, Parviz Owlia, Bagher Yakhchali, Abdolaziz Rastegar LariProblem statement: Pseudomonas aeruginosa is an opportunistic pathogen that still develops life-threatening infections in patients with immunological system defects, like burn patients, especially in developing countries. Since this bacterium is naturally resistant to many drugs and is able to get resistance to all effective antibiotics, the infection with this organism is particularly problematic condition for patients. This study was design … …American Journal of Infectious Diseases, Vol. 5, Issue 4 · 31 Dec 2009 · 6,993 accessesView PDFCite
Research ArticleOpen accessIn the abstractRocks with Asbestos: Risk Evaluation by Means of an Abrasion TestBellopede Rossana, Clerici Carlo, Marini Paola, Zanetti GiovannaNaturally occurring asbestos and asbestiform minerals can be found in metamorphic rocks and in the soil of the alluvial plains. Problem statement: The definition of the "free-asbestos rock" and the limit to consider a rock or a soil safe is still a controversial issue. American and European laws did not present any method to define the hazard of the green … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Oct 2009 · 7,672 accessesView PDFCite
Research ArticleOpen accessIn the abstractCorpus Design for Malay Corpus-based Speech Synthesis SystemTian-Swee Tan, Sh-HussainProblem statement: Speech corpus is one of the major components in corpus-based synthesis. The quality and coverage in speech corpus will affect the quality of synthesis speech sound. Approach: This study proposes a corpus design for Malay corpus-based speech synthesis system. This includes the study of design criteria in corpus-based speech synthesis, Malay corpus based database design and the concatenation … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 8,307 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Hypoglycemic Properties of BAE Maca Max PreparationEdward V. Krizhanovsky, Kamila B. Tursunova, Lim Kwong Choong, Ng Chee PingProblem statement: Considering an urgency of a question of diabetes treatment and decrease the side effects of hypoglycemic therapies, there is a necessity to elaborate a new approaches to this problem. This study was directed on estimation of possibilities of a preparation of naturally modified BAE maca max product for improvement of semeiology of diabetes and reduce the glucose level … …OnLine Journal of Biological Sciences, Vol. 9, Issue 1 · 31 Mar 2009 · 7,852 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnti-Phytopthora capsici Activities and Potential Use as Antifungal in Agriculture of Alpinia galanga Swartz, Curcuma longa Linn, Boesenbergia pandurata Schut and Chromolaena odorata: Bioactivities Guided Isolation of Active IngredientsWilart Pompimon, Jinnantina Jomduang, Uma Prawat, Samlee MankhetkornProblem statement: Plant derived fungicides are now being subjects of many research groups. These secondary metabolites have enormous potential to inspire and influence modern agrochemical research. The study aimed to investigate the antifungal activity and their potential use as fungicides in the agriculture of crude extracts and purified compounds derived from plants used in traditional medicines. Approach: Four medicinal plants … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 8,709 accessesView PDFCite
Research ArticleOpen accessIn the abstractHard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on Brassica chinensisChristian Ulrichs, Uwe Schmidt, Tanja Mucha-Pelzer et al.Problem statement: One focus in recent atmospheric pollution research is on fine Particle Matter (PM), especially as result of increasing traffic and anthropogenic activity in urban areas. Here, the impact on animal and human health has been in the center of many studies. Despite the fact that PM depositions can affect plants on the long term, there are only few … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 8,650 accessesView PDFCite