Environmental Science

Assessing the Lateral Erosion of Main Meandering Rivers in the Mid-Central Part of Vietnam

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Until now, predicted methods of lateral erosion of rivers have been not much, especially that are still have not been completed any scientific base. Nonetheless that the article try to test and apply the method of power equilibrium (semi-empirical method) to assess the lateral eroded rate of the mid-downstream of main rivers in the midcentral part of Vietnam as Gianh River, Nhat Le River, Thach Han River, Huong River, Thu Bon River, Tra Khuc River and Ba River. Through research results, they show of almost rivers have the rate of lateral erosion alternated from moderate (2-5 m/year) to strong (5-10 m/year). In particularly, Nhat Le River where commonly weak lateral erosion (<2 m/year) occurs. In addition, the erosion activity are strongly differentiated by space-time and completely depends on the morphological characteristics of river channel, soil composition and ground structure of riverbanks and hydrology – hydraulic regime of each river section. These gathered results are suitable for our field investigation for the in research rivers in period 2012-2015. We propose applying method for wide alluvial anabranching rivers in the mid-central part of Vietnam.  To know more click:



#Nanotechnology in Agroecosystem: Implications on Plant Productivity and its Soil #Environment

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Compared to conventional or other contaminants, nanoparticles pose some new environmental challenges for scientists and environmentalists worldwide. Nanotechnology will leave no field untouched including agriculture by its ground breaking scientific innovations. So far, the use of nanotechnology in agriculture has been mostly theoretical, but it has begun to have a significant effect in the main areas of the food industry. Nanoparticles finding great potential as delivery systems to specific targets in living organisms and is being used in medical sciences. In plants, the same principles can be applied for a broad range of uses, particularly to tackle phytopathological infections, nutrition supplement and as growth adjuvant.

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New tools aiding storm prediction, increasing ship navigational safety in Gulf of Mexico

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Texas, Louisiana, Mississippi, Alabama and Florida may be more prepared than ever, thanks to some new tools that are enhancing the capabilities that provide the foundation of the Gulf of Mexico Coastal Ocean Observing System (GCOOS). These tools — GPS Continually Operating Reference Systems (CORS) and Physical Oceanographic Real-Time System (PORTS®) — are being put into place through local, state and federal partnershipsand are providing better and more accurate information about the Gulf that will help with storm prediction and aid in ship navigation. The new CORS stations are being funded by the National Oceanic and Atmospheric Administration’s National Geodetic Survey and put into place through the newly formed Gulf Coast Spatial Reference Consortium, a partnership among the Conrad Blucher Institute for Surveying and Science at Texas A&M University-Corpus Christi, Louisiana State University’s Center for Geoinformatics, the University of Southern Mississippi’s Mississippi Spatial Reference Center and the Alabama Department of Transportation. The consortium provides Global Navigation Satellite System (GNSS) data consisting of carrier phase and code range measurements in support of three dimensional positioning, meteorology, space weather and geophysical applications along the Gulf of Mexico.

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A new look at urbanization’s Environmental impact

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A research team  has developed a technique for quick, simple and cost-effective mapping of worldwide urban growth and its environmental impact.Over the decade between 2000 and 2010, the population of New York City grew 4.8 percent while Shanghai’s increased by 65.6 percent. By 2030, the world’s urban population will increase by another 2 billion. The extent and impact of such rapid urbanization have received relatively little scientific study, particularly in China, where the percentage of the population living in cities rose from 20 to 50 percent during the last 20 years.But a new technique to gather information has been developed by Yifang Ban, professor of Geoinformatics at KTH, and her colleagues at Tsinghual University/UC Berkeley, University of Pavia, the German Aerospace Center and Nanjing University. The team combines satellite images from the present and past to create new pictures that reveal the difference a decade or more of growth makes in an urban region.The method incorporates synthetic aperture radar (SAR), a technology that is completely impervious to bad weather and clouds, time of day, smog, dust storms and other factors that can interfere with information gathering.

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Bioremediation of Tannery Wastewater Using Immobilized Marine Microalga Tetraselmis sp.: Experimental Studies and Pseudo-Second Order Kinetics

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The removals of pollutants (nitrate, silicate, chromium and sulphide) from tannery wastewater were studied in batch experiments using marine microalgae. In this study five different microalgae species were used, out of these Tetraselmis sp. was found to be the most promising one. This species was further studied by employing several factors like variation in pH, retention time, algal cell density and beads density in order to understand the effect of biosorption on the pollutants. The higher biosorption percentage was achieved with a short retention time, while the sorption capacity of the algal cell density increased with the rise in the concentration of pollutants.

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First Record of the Reef Fish, Lesson’s Thick Lip Plectorhinchus lessonii (Cuvier 1830) (Family: Haemulidae) from Andaman and Nicobar Islands, India

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This paper reports the occurrence of Lesson’s thick lip Plectorhinchus lessonii (Cuvier 1830), for the first time from the Andaman and Nicobar Islands, India. Two specimens were collected from the mangrove creek of Burmanallah in South Andaman, and identified as Plectorhinchus lessonii. This species was known so far from Western Pacific and southeastern Indian Ocean up to Australia and Philippines. The present report extends the distributional range of Plectorhinchus lessonii beyond Australian waters to Andaman waters.

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