202 articles for “surface water”

Research ArticleOpen accessIn the abstractFormation of Post-Fire Water Repellent Layers on Nothofagus glauca (Hualo) Forests, After the Historical “Las Máquinas” Wildfire in South-Central ChilePablo A. Garcia-Chevesich, Eduardo Martínez, Alejandro García et al.The Chilean summer of 2017 was the worst wildfire season by far. Hundreds of wildfires burned a total of more than half a million hectares of forested land (native forests and forest plantations). A significant portion of the burned area was occupied by Hualo (Nothofagus glauca (Phil.) Krasser), a native forest species widely distributed in central Chile. Using the water-drop-penetration-time … …American Journal of Environmental Sciences, Vol. 15, Issue 1 · 15 Jan 2019 · 9,391 accessesView PDF Cite

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 PDF Cite

Review ArticleOpen accessIn the abstractEnvironmental Concerns and Toxicogenetic Endpoints of Priority Substances (PSs) and Contaminants of Emerging Concerns (CECs): A Comprehensive ReviewDe-Sheng Pei, Chun-Di Chen, Naima Hamid et al.Priority Substance (PSs) and Contaminant of Emerging Concerns (CECs) exhibited a wide range of environmental and public health concerns worldwide. This review summarized the documented studies related to the current surface water occurrence, spatial distribution, ecological risks and toxicity of selected PSs, such as polycyclic aromatic hydrocarbons (PAHs) and CECs, such as Di(2-Ethylhexyl) Phthalate (DEHP) and Pharmaceuticals and Personal Care … …American Journal of Environmental Sciences, Vol. 14, Issue 3 · 10 Jul 2018 · 8,393 accessesView PDF Cite

Research ArticleOpen accessIn the abstractFractionation of Organic Carbon in Arial Beel Wetland Soils of BangladeshMonera Akter Eva, Mahmudul Islam Piash, Md. Faruque Hossain, Zakia ParveenA study was conducted to determine the organic carbon fractions in the vertical sections of a benchmark wetland soil of Bangladesh (Arial Beel) and their dynamics that directly affect the biogeochemistry of soil, water and plant biomass ecosystem. Two distinctive soil series viz. Sara and Arial are characterized such as pH, moisture content, textural class, CEC, organic carbon (SOC), bulk … …American Journal of Environmental Sciences, Vol. 14, Issue 2 · 4 May 2018 · 9,139 accessesView PDF Cite

Case ReportOpen accessIn the abstractUnderstanding the Relationship between Aquaculture and Poverty: The Case of Gurudaspur, NatoreSaman Saad, Raisa Bashar, Farah Yeasmin, Nazmul Ahsan KhanAquaculture is perceived as a source of income and economic raise in several small towns and villages of Bangladesh and Gurudaspur of Natore region is no different. From the 1990s onward it brought about a great economic boost. However, in the last decade and at present, several negative externalities of this practice have started to surface, including severe water-logging (after … …American Journal of Environmental Sciences, Vol. 14, Issue 1 · 7 Feb 2018 · 9,448 accessesView PDF Cite

Review ArticleOpen accessIn the abstractNasa Selects Concepts for a New Mission to Titan, the Moon of SaturnRelly Victoria Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuNasa just has selected two new concepts for some new robotic missions, one of which aims to explore potential landing sites on Saturn’s largest moon, Titan. This first concept is named Dragonfly, which is a drone-like rotorcraft that would use the environment on Titan to fly to a number of locations to sample materials and determine surface composition to examine … …Journal of Aircraft and Spacecraft Technology, Vol. 2, Issue 1 · 19 Jan 2018 · 12,012 accessesView PDF Cite

Review ArticleOpen accessIn the abstractThere is Life on Mars?Relly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella et al.If you can live on Mars, or if there was life on this planet, it's a natural question. The population of our planet has far outstripped the boundaries from which the planet begins to overcrow. Global resources are decreasing, while their consumption is rising more and more. The world's population is growing, it needs housing, food, water, air, clothes, transport, … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 1 · 23 Dec 2017 · 8,582 accessesView PDF Cite

Research ArticleOpen accessIn the abstractInvestigation and Comparison of the Quantitative and Qualitative Frequency Distribution of the RiversVijay P. Singh, Mohsen Ghane, Kaveh Ostad-Ali-Askari et al.The entrance of pollutants from human activities to the surface water has seriously threatened the quality of water. TDS is an important qualitative parameter of water that describes the water salinity by measuring the concentration of total dissolved solids. First, using TDS and discharge data of the Cuyahoga River, Ohio, the partial and annual data sets were obtained. Then, partial … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 16 Oct 2017 · 8,495 accessesView PDF Cite

Research ArticleOpen accessIn the abstractUnder WaterRaffaella Aversa, Relly Victoria Petrescu, Antonio Apicella, Florian Ion Tiberiu PetrescuWith a 361 million square Km surface and a volume of 1370 million of cubic kilo, world seas and oceans have represented and still remain the privileged space for living species evolution. Other than being the 70% of the Earth surface, water environment, contrary to the terrestrial one where life essentially develops in 2 dimensions, is a 3D fully volume … …OnLine Journal of Biological Sciences, Vol. 17, Issue 2 · 10 Jun 2017 · 7,235 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSynthesis and Characterization of Au@TiO2 NWs and their Catalytic Activity by Water Splitting: A Comparative Study with Degussa P25Abniel Machín, María Cotto, José Ducongé et al.Different amount of gold nanoparticles (1, 3, 5, 10 wt%) were deposited on the surface of synthesized titanium oxide nanowires (TiO2 NWs) and Degussa P25 (TiO2-P25). The results evidenced the presence of small and dispersed gold particles on the surface of TiO2 NWs and TiO2-P25 and an increase in the specific surface area of all the composites. The photocatalytic activity … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 6 Jun 2017 · 8,431 accessesView PDF Cite