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505 results for “Compound”

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Research ArticleOpen accessEvery word in the titleCharacterization, Concentrations and Emission Rates of Volatile Organic Compounds from Two Major Landfill Sites in KuwaitMohammad AlAhmad, Marwan Dimashki, Abdallah Nassour, Michael NellesProblem statement: The emission of pollutants from landfill sites in Kuwait is of major concern due to the associated adverse environmental and health impacts. There are 18 landfill sites in Kuwait which are contributing to the emission of atmospheric pollutants including; methane, carbon dioxide and Volatile Organic Compounds (VOCs). Approach: Determine the concentration and composition of VOCs in LFG emissions … …American Journal of Environmental Sciences, Vol. 8, Issue 1 · 17 Feb 2012 · 7,980 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Different Exogeneous Compounds on Biosorption of EndosulfanDeepika Dave, A. K. DikshitProblem statement: Organochlorine pesticide endosulfan is widely used as a replacement for DDT and dieldrin in many parts of the world. Presence of residual pesticides in the water, air and soil environment was confirmed since 1960s. Such Persistent Organic Pollutants (POPs) are of concern because of their long-term subtle effects on hormones, the immune system and reproduction. Therefore, it becomes … …American Journal of Environmental Sciences, Vol. 7, Issue 3 · 11 Jul 2011 · 7,205 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleProfiling of Phenolic Compounds of Somatic and Reproductive Tissues of Agave Durangensis Gentry (Agavaceae)Norma Almaraz-Abarca, Elí Amanda Delgado-Alvarado, Vicente Hernández-Vargas et al.Problem statement: In Durango, Mexico, mescal is elaborated from wild plants of Agave durangensis. This species shows a high morphological variability within and among populations, what makes its taxonomic delimitation a hard task. Approach: In this study the pollen and foliar phenolic compositions of Agave durangensis were analyzed by HPLC/DAD with the aim of determining the significance of phenol profiles … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 7,746 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAntitussive Activity Directed Isolation of Compounds from Onosma hispidumShahina Naz, Rafeeq A. Khan, Rahmanullah Siddiqi, Syed A. SayeedThe chemical investigation of the ethanolic extract of the root bark of Onosma hispidum following antitussive activity directed isolation led to the isolation of 4-hydroxy-3-methoxy cinnamic acid (mCA) and 4-hydroxy-3-methoxy benzoic acid (mBA) which have been reported for the first time in this species. Antitussive activity of the compounds was evaluated by reduction in frequency of cough induced by SO2 … …American Journal of Pharmacology and Toxicology, Vol. 1, Issue 1 · 31 Mar 2006 · 7,326 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDetermination of A.C. Impedance Spectroscopic and Cyclic Voltammetric Behavior of Some Heterocarbonyl Compounds in Both Aprotic and Aqueous MediaFarouk A. RashwanThe electrochemical behavior of eosin, isatin and alloxan in aqueous KNO3 and NaClO4 solutions on the Hanging Mercury Drop Electrode [HMDE] and in aprotic DMF and CH3CN on the Pt-disk electrode at 298 K was investigated using the Cyclic Voltammetry (CV) and the Electrochemical Impedance Techniques (EIS). In the CV experiment, the electroreduction of eosin in both aqueous and non-aqueous … …American Journal of Applied Sciences, Vol. 2, Issue 7 · 31 Jul 2005 · 6,667 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of GA3 and Shading on the Growth and Content of Artemisinin Compound in Leaf of Artemisia (Artemisia annua L.) Grown on the Medium Land of Karanganyar, IndonesiaYuni Kusumodewi, Usman Siswanto, Samanhudi, Ahmad YunusMalaria is still becomes a concern for the government of Indonesia, since this disease has affected many people. Artemisia annua L. is an aromatic plant that destroys malarial parasites, lowers fever and of which the secondary metabolite is artemisinin. Enhanced production of the artemisinin content in the whole plant is desirable. This experiment was conducted in Karanganyar, Indonesia 900m asl. … …American Journal of Applied Sciences, Vol. 14, Issue 10 · 1 Nov 2017 · 8,011 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleZerumbone: A Natural Compound with Anti-Cholinesterase ActivityAhmad Bustamam, Siddig Ibrahim, Adel S. Al-Zubairi et al.Herbal dugs could be a new source for inhibitors of acetyl cholinesterase (anti-AChE), the key enzyme in the breakdown of acetylcholine and a new talented approach for the cure of elderly neurologically associated disorders such as Alzheimer’s disease (AD). Zerumbone (ZER) is sesquiterpene from the edible plant, Zingiber zerumbet which is known to possess tremendous biological activities. In this study, … …American Journal of Pharmacology and Toxicology, Vol. 3, Issue 3 · 30 Sep 2008 · 9,646 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleLeast Absolute Deviation Regression and Least Squares for Modeling Retention Indices of Set Compounds Food and Pollutants of the EnvironmentFatiha Mebarki, Khadija Amirat, Salima Ali Mokhnach, Djellol MessadiConsidering the importance of the statistical analysis of regression in modeling based separately on study for Quantitative structure retention indices on Carbowax 20 M (ICw20M) and OV-101 columns (IOV-101) relationships (QSRR) are determined for 114 pyrazines. The detection of influential observations for the standard least squares regression model is a problem which has been extensively studied. Least Absolute Deviation regression … …American Journal of Applied Sciences, Vol. 14, Issue 5 · 5 Jun 2017 · 7,431 accessesView PDFCite
Review ArticleOpen accessEvery word in the titleBiotechnological Approaches for Production of High Value Compounds from Bread WasteSaima Haroon, Anu Vinthan, Leonardo Negron et al.A growing global population has led to an increasing demand for food processing industries and consequently the generation of large amounts of food waste. This problem has intensified due to slow progress in the development of effective waste treatment and disposal strategies. Food waste such as bread waste is a reservoir of complex carbohydrates, proteins and lipids which have the … …American Journal of Biochemistry and Biotechnology, Vol. 12, Issue 2 · 14 Jun 2016 · 8,206 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAntimicrobial Activities of Unconventional Compounds against Some Bacteria Associated with Skin Infections in Humans, Sheep and GoatsIman Shabana, Amira El-AdlyBacterial skin infections are a common problem encountered in clinical practice and causing great economic losses for sheep and goats producers. Increasing multidrug resistance of pathogens paves the way for reconsidering alternative medicine. The present study was carried out to explore the antibacterial activities of different volumes; 5, 25, 50 and 100 µL of gold nanoparticles (NPS) and the aqueous … …American Journal of Applied Sciences, Vol. 13, Issue 1 · 11 Jan 2016 · 8,029 accessesView PDFCite