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31 articles for “chemical agents”
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Research ArticleOpen accessIn the abstractGilsonite Modified Asphalt for Use in Pavement ConstructionAliasghar Akbari Nasrekani, Mostafa Nakhaei, Koorosh Naderi et al.Properties such as durability and moisture resistance of asphalt concrete significantly improve pavement service life. When siliceous aggregate is used, then preventing moisture damage and stripping become distinctly required. Typically, stripping could be prevented by either using antistripping agents or by modifying the binders. The anti-stripping agent achieve its purpose by changing the aggregates' affinity for water through changing the … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 3 Apr 2018 · 9,387 accessesView PDFCite
Research ArticleOpen accessIn the abstractAcetylation Process and Antioxidant Activity of a Polysaccharide from Loquat (Eriobotrya japonica) LeavesYiting Xue, Xiao Ding, Ze Zhang et al.Chemical modifications of polysaccharides can provide an opportunity to obtain new agents with possible therapeutic uses. In this study, a water-soluble polysaccharide extracted from Loquat Leaves (coded LLPs) was purified by the column chromatography, which was used to investigate its acetylation process by the acetic anhydride method. The Degree of Substitution (DS) was used as the index, the effect of … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 4 · 1 Jan 2021 · 7,059 accessesView PDFCite
EditorialOpen accessIn the abstractProtecting crop species from biotic and abiotic constraints in the era of Global Change: are we ready for this challenge?Marco Landi, Giovanni BenelliReliable and affordable supply of food is of crucial importance to the progress and stability of human societies. During the last century, we have assisted to an extraordinary increase of crop yields, especially for the most widespread and consumed crop species, such as rice, wheat, corn and soybean. The Broadbalk experiment, one of the oldest continuous agronomic experiments in the … …American Journal of Agricultural and Biological Sciences, Vol. 11, Issue 2 · 4 Jun 2016 · 8,402 accessesView PDFCite
Research ArticleOpen accessIn the abstractHepatoprotective Effect of Vitamin EElias Adikwu, Brambaifa NelsonDrugs and some chemical agents are known to induce hepatotoxicity in humans which is of great concern to clinicians. Chemical agents are been screen daily for their hepatoprotective properties. Among these chemical agents is vitamin E which has drawn wide attention due to it reported hepatoprotective property as reported by researchers. This study collected and evaluated reports to ascertain the … …American Journal of Pharmacology and Toxicology, Vol. 7, Issue 4 · 15 Mar 2013 · 8,006 accessesView PDFCite
Research ArticleOpen accessIn the abstractCapability of Streptomyces spp. in Controlling Bacterial Leaf Blight Disease in Rice PlantsRatih Dewi Hastuti, Yulin Lestari, Rasti Saraswati et al.Problem statement: Bacterial Leaf Blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is the most damaging disease in lowland rice growing areas in Indonesia. Streptomyces spp. have been known as a producer of antimicrobial compounds that can be used as biocontrol agents. This study examined the ability of three promising indigenous Streptomyces isolates which were previously selected from in … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 2 · 30 May 2012 · 9,366 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiocontrol of Soil Fungi in Tomato with Microencapsulates Containing Bacillus subtilisMarcela Hernàndez-Suàrez, Francisco Daniel Hernàndez-Castillo, Gabriel Gallegos-Morales et al.Problem Statement: An option to reduce pollution by synthetic agro-chemical in root plant disease management is the use of antagonist rhizobacteria belonging to Bacillus genus, because their inhibitory properties, stimulation of plant growth and crop yield increase. Approach: This study was carried out in order to evaluate if Bacillus subtilis strains could play an antagonists role of plant pathogens and … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 6 Jun 2011 · 8,934 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis and Characterization of Organotin(IV) N-Benzyl-N-Isopropyldithiocarbamate Compounds: Cytotoxic Assay on Human Hepatocarcinoma Cells (HepG2)Normah Awang, Ibrahim Baba, Nor Syaidatul Akmal Mohd Yousof, Nurul Farahana KamaludinProblem statement: Several studies on organotin(IV) dithiocarbamate compounds have been carried out but not on the synthesis and characterization together with cytotoxic assay of organotin(IV) N-benzyl-N-isopropyldithiocarbamate compounds. Approach: Three new organotin(IV) compounds of type N-benzyl-N-isopropyldithiocarbamate have been successfully synthesized by direct reaction between secondary amine with organotin(IV) chloride using in situ method. All the compounds were characterized using elemental analysis, … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 8,098 accessesView PDFCite
Research ArticleOpen accessIn the abstractUsing Culture, Policy and Traditional Knowledge to Improve Engagement in Science CoursesLawrence K. Duffy, Catherine Hurt Middlecamp, Anna Godduhn, Cindy E. FabbriProblem statement: In our undergraduate science courses, we need to engage students by including the current issues and concerns of our students as well as recognizing the place-based context in which they learn. Including culture, policy and traditional knowledge when it intersects with a chemical principle and a challenging real world issue adds concreteness to the scientific process. Approach: Science … …American Journal of Applied Sciences, Vol. 6, Issue 8 · 31 Aug 2009 · 7,187 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis and Characterization of Gold Nanoparticles by TryptophaneAzim Akbarzadeh, Davood Zare, Ali Farhangi et al.Problem statement: Preparation and synthesis of gold nanoparticles with small size and suitable stability is very important and applicable particularly in medicine. In this study, we have prepared gold nanoparticles by chemical reduction method employing L-Tryptophane as a reducing agent for ionic gold. Approach: The gold nanoparticles are the most employed amongst the different metallic nanoparticles in the fields of … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 10,050 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Maturity Level in Laying Hen Manure by Chemical and Thermogravimetric AnalysisAlice Dall’Ara, Francesco Antolini, Laura Billi et al.This study aims at investigating maturity levels in manure from laying hens in order to encourage its agronomic re-utilization. In fact the use of unstable/insufficiently mature manure could potentially damage both soils and crops. Effective, easy to reproduce methods are needed in order to assess bio-stabilisation and maturity levels, particularly for biomass that has not undergone conventional composting. This study … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 6,542 accessesView PDFCite