Category: EARTH SCIENCE

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Accumulation of Am-241 by the Submerged Macrophyte Elodea canadensis and Assessment of Radionuclide Toxicity with Direct and Indirect Effects

A submerged macrophyte of the Yenisei River, Elodea canadensis, was used to study the microdistribution of the artificial radionuclide 241Am among different components of the plant. The total amount of 241Am added to the experimental system was 1850±31 Bq/L. The total amount of 241Am accumulated by the plants was 182 Bq per sample, or 758±385…
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August 25, 2020 0

An Illustrated Study on Mapping of Soil Erosion Zones of Meghadrigedda Catchment, Visakhapatnam, India for Conservation– A Geospatial Approach

Geography and Earth Science Vol.3 Meghadrigedda, a non-perennial drainage system is one of the major water resources of Vishakhapatnam city located in the northern coastal region of Andhra Pradesh, India. It traverses through the hilly terrain of Eastern GhatMobile Belt (EGMB) characterized by khondalitic rock formations. Excessive siltation scenario aggravated due to soil erosion in…
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August 25, 2020 0

Geology of Evaporite Sulfate Deposits in Late Paleozoic Rocks of Wang Saphung Area, Loei Province, Thailand

The evaporite sulfate deposits in Loei-Wang Saphung (LWS) area of northeastern Thailand is a small evaporite sediment deposit with up to 50 m thick gypsum-anhydrite beds. The evaporite deposits are overlain by cross-laminated and fine-grained siliciclastic and carbonate rocks of the Carboniferous to Permian ages. This study documents some characteristics of the deposits, including lithologies,…
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August 25, 2020 0

Impact of Untreated Liquid Waste Disposal on Water Quality in a Tropical Region

The discharge of untreated liquid waste into the River Atta-dea makes its assessment of water quality indicators necessary with its associated human health implications and ecological management. Our study was therefore carried out to investigate the influence of untreated liquid waste on the physicochemical and microbiological parameters of the Atta-dea stream under different seasons in…
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August 25, 2020 0

Scientific Research: Biosorption and Chemical Precipitation of Lead Using Biomaterials, Molecular Sieves, and Chlorides, Carbonates, and Sulfates of Na & Ca

Lead, a heavy metal, is a wellknown contaminant in water and has been reported to cause serious health implications to humans, animals, and plants. One of the processes for heavy metal remediation of contaminated water is chemical precipitation. In this present work, chemical precipitation of lead from a contaminated aqueous matrix by chlorides, carbonates, and…
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August 25, 2020 0

Critical Study of the Diversity and Abundance of Nematodes in Pollution Prone Urban and Rural Areas of Thiruvananthapuram District in Kerala, South India

Nematodes represent a very abundant group of soil organisms in the food web and are important for soil quality. In the present study, the diversity of nematodes in the soils of urban and rural areas of Thiruvananthapuram District was noted and their densities calculated. Different categories of land use areas (coastal area, sewage disposal area,…
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August 25, 2020 0

Preliminary Risk Assessment Posed by Formaldehyde Residues in Clothing to Vietnamese Consumers: Critical Observation

The assessment of potential health risks posed by formaldehyde in clothing to consumers is of increasing concern worldwide. Because of this, it is necessary to develop an exposure model that can realistically mimic clothes wearing conditions. This study aims to preliminarily develop a health risk assessment model for formaldehyde in clothing, and then to assess…
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August 25, 2020 0

Advanced Study on Phytoattenuation of Soil Metal Contamination: The Effects of Plant Growth Relgualtors (GA3 and IAA) by Employing Wetland Macrophyte Vetiver and Energy Plant Sunflower

Phytoattenuation, a novel green remediation concept, has been successfully demonstrated while employing vetiver and biostimulator (gibberellic acid GA3 and indol-3-acetic acid IAA) to gradually mitigate soil Cu levels. The effectiveness of stimulator GA3 and IAA was in the descending sequence GA3> IAA. Biostimulator has been demonstrated plant growth enhancement and been employed for agricultural operation.…
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August 25, 2020 0

Reverse-Osmosis Desalination of Water Powered by Photo-Voltaic Modules: Recent Study

The rising of the world’s population leads automatically to the rising of water demand. As a consequence the lack of drinking water increases. Currently, approximately 1.2 billion people globally (one-sixth of the world’s population) do not have access to adequate clean water. Since a large part of the world’s population is concentrated in coastal areas,…
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August 25, 2020 0

Numerical Modeling of the Transformation of Global Gas Flows in the Earth’s Atmosphere over the Course of a Year: Global Perspective

A mathematical model, developed earlier in the Polar Geophysical Institute, is applied to investigate the transformation of global gas flows in the Earth’s atmosphere over the course of a year. The model is based on the numerical solution of the system of gas dynamic equations. The mathematical model produces three-dimensional distributions of the gas dynamic…
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August 25, 2020 0