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143 results for “microorganisms”
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Research ArticleOpen accessEvery word in the titleRemoval and Recovery of Uranium using Microorganisms Isolated from North American Uranium DepositsTakehiko TsurutaSome attempts were made to remove and recover uranium that may be present in nuclear fuel effluents and mine tailings using microorganisms isolated from North American uranium deposits. To establish which microorganisms accumulate the most uranium, hundreds strains of microorganisms were screened. Of these strains of microorganisms tested, extremely high uranium accumulating ability was found in some bacteria isolated from … …American Journal of Environmental Sciences, Vol. 3, Issue 2 · 30 Jun 2007 · 7,285 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBiological Activity of Methyl tert-butyl Ether in Relation to Soil Microorganisms has a Negative Environmental ImpactGholam H.S. BonjarFuel oxygenates are added to gasoline to enhance combustion efficiency of automobiles and reduce air pollution. Methyl tert-butyl ether (MTBE) is the most commonly used oxygenate because of its low cost, high-octane level and ease of blending with gasoline. However, due to its water solubility, high mobility and low biodegradability it leaches in soil subsurface at the speed of groundwater. … …American Journal of Environmental Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 6,661 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleExperimental Evidence for the Role of Natural Radioactivity in Influencing Viability of Commensal MicroorganismsMarco RuggieroTo investigate the feasibility of culturing edible microbes, classified as probiotics for human consumption, in commercially available, naturally radioactive, mineral water; to compare their viability with that of the same microbes cultured in deuterium-depleted water. A diversified array of probiotics was cultured in two different naturally radioactive mineral waters, or in deuterium-depleted water in order to assess the effects of … …American Journal of Immunology, Vol. 17, Issue 1 · 26 May 2021 · 8,741 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBehaviour of Main Microbiological Parameters And of Enteric Microorganisms During the Composting of Municipal Solid Wastes and Sewage Sludge in A Semi-Industrial Composting PlantOlfa Fourti, Naceur Jedidi, Abdenaceur HassenThis study was focused on the microbiological aspects of composting and on the behaviour of main prevalent microbial communities (non-pathogenic and selected pathogenic bacteria) during the composting process of municipal solid wastes and sewage sludge in a semi-industrial composting plant. Results showed that the dehydrogenase activity and Biomass C / Biomass N ratio showed a noticeable increase in the two … …American Journal of Environmental Sciences, Vol. 4, Issue 2 · 30 Apr 2008 · 7,306 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPromising Biocontrol Agents Against the Main Pathogens of Apple Fruit RotElvira Ismailova, Nurlan Kuldybayev, Gul Baimakhanova et al.Current study looked into how well microorganisms, both those already known and newly found, from the surface of plants in gardens in southern and southeastern Kazakhstan could fight against other harmful microbes. We evaluated the effectiveness of 16 strains of lactic acid bacteria, 11 strains from the Bacillus and Pseudomonas genera, and 7 strains of Trichoderma fungi (all sourced from … …OnLine Journal of Biological Sciences, Vol. 26, Issue 2 · 25 Aug 2026 · 864 accessesView PDFCite
Review ArticleOpen accessIn the keywordsAbout the Cyanobacteria and StromatolitesFlorian Ion Tiberiu Petrescu, Liviu Marian UngureanuStromatolites are layered biochemical accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains in biofilms (specifically microbial mats), especially cyanobacteria. Stromatolites occur widely in the fossil record of the Precambrian but are rare today. Life on Earth was born at least 3.7 billion years ago, but since then the number of living things has … …OnLine Journal of Biological Sciences, Vol. 22, Issue 1 · 17 Feb 2022 · 8,230 accessesView PDFCite
Research ArticleOpen accessIn the keywordsImpact Assessment of Soil Contamination with Antibiotics (for Example, an Ordinary Chernozem)Yuliya Viktorovna Akimenko, Kamil Shagidullovich Kazeev, Sergey Ilyich KolesnikovThe environmental behavior of antibiotics is not well known and the precise environmental risk assessment is not practical. We studied the impact antibiotics (benzylpenicillin, pharmasin and nystatin) at different concentrations (100 and 600 mg kg-1) on population densities of microorganisms and enzymatic activity of ordinary chernozems in model experiments. The applied doses of antibiotics had definite suppressing effects on population … …American Journal of Applied Sciences, Vol. 12, Issue 2 · 29 Apr 2015 · 7,852 accessesView PDFCite
Research ArticleOpen accessIn the keywordsUtilization of Eco-Feed Containing Mugwort Microorganism Compounds as a Feed Ingredient Source for Layer HensJassada Ruttanavut, Koh-en Yamauchi, Narin ThongwittayaProblem statement: Due to price hikes in feed, several strategies should be sought to reduce feeding costs. At the same time, there has been a considerable increase in environmental pollution from food waste. If food waste could be transferred into poultry diets, this would solve a great problem, helping poultry producers to reduce feeding costs, while reducing environmental problems arising … …American Journal of Animal and Veterinary Sciences, Vol. 6, Issue 1 · 26 Apr 2011 · 8,372 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAssociated Health Effects among Residences Near Jeleeb Al-Shuyoukh LandfillK. Schrapp, N. Al-MutairiProblem statement: There is growing concern about landfill adverse health effects from exposure to landfill emissions. Approach: Airborne dust samples from houses near Jeleeb Al-Shuyoukh landfill and control residences were analyzed for molds and bacteria and Volatile Organic Compounds (VOCs) each month for one year. Results: The number of mold species was greater in the residences close to Jeleeb Al-Shuyoukh … …American Journal of Environmental Sciences, Vol. 6, Issue 2 · 16 Jun 2010 · 7,619 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIncreasing Immunity in Young Cattle Through the Use of the Probiotic Preparation Lactobact-ARZMyktybaeva Raya, Alpeisov Shokhan, Kozhakhmetova Zubaira, Kyrgyzbay NazymAccording to the Kazakhstan national animal health monitoring system, the mortality rate of young farm animals ranges from 4.2% to 7.8%, with gastrointestinal diseases being the main registered condition. This study aimed to create a locally produced probiotic, formulated using a consortium of lactic acid bacteria, to enhance the immune function of young farm animals. The study utilized a newly … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 3 · 3 Dec 2025 · 2,272 accessesView PDFCite