نتایج جستجو برای: natural uranium

تعداد نتایج: 489999  

Journal: :Nuclear Science and Engineering 1958

2010
Kalia Moldogazieva

The legacy of uranium production threatens the environment and public security in Kyrgyzstan and neighboring countries. The key ecological problems include: pollution of the environment with radionuclides; increasing risk of RAW tailing dumps destruction due to climate change, natural disasters and anthropogenic catastrophes which are typical for mountainous and seismic regions, and large land ...

Journal: :BIO Web of Conferences 2019

Journal: :Journal of Research of the National Institute of Standards and Technology 2017

2012

The purpose of this study is to assess the response of the aquatic environment (sediment, sea water and mussels Mytilus sp.) on uranium and radium activity and concentration following the decrease of phosphate discharges from a technologically improved transhipment terminal, situated at the CroatianAdriatic coast in the port of Sibenik. The highest U activities (485±16 Bq kg" dry weight) and Ra...

1998
Chris Waltham

Since 1945 Canada has had a nuclear power industry based on reactor design which uses natural uranium and heavy water. The tortuous and improbable sequence of events which led to this situation is examined.

Journal: :Oriental journal of chemistry 2023

Uranium(U) is one of the highly toxic heavy metals and radionuclides that has become a major threat to soil health. There are two types sources Uranium in system, natural anthropogenic. Natural uranium include rock systems volcanic eruptions while anthropogenic mining activities, disposal radioactive waste, application phosphate fertilizers, etc. accumulation impacts germination, early seedling...

Journal: :آب و خاک 0
باقریفام باقریفام لکزیان لکزیان احمدی احمدی فتوت فتوت رحیمی رحیمی

abstract uranium is a radioactive heavy metal. development of nuclear industries and application of phosphate fertilizers contain uranium impurity resulted in soil contamination with uranium. a pot experiment had been conducted under controlled condition. the experiment carried out in completely randomized design with two factors, including two plants (soybean and sunflower) and six levels of u...

2008
K. Skeppström B. Olofsson

Radioactive elements occur naturally in the environment. A long-term exposure to the radioactive gas radon (Rn) can lead to lung cancer. In Sweden, 450 cases of lung cancer, mostly among smokers, are registered every year, due to inhalation of radon gas. The ultimate parent element of Rn is uranium (U), which is found in soil and bedrock in varying concentrations. U is also radioactive but caus...

2003
J. Dash

Hydrogen loading of 99.98% pure natural uranium foils (0.18 mm thick) was performed by aqueous electrolysis in order to compare with glow discharge results. Alpha, beta, and gamma specific radioactivity were measured after hydrogen loading and compared with the control. Some of the samples revealed an increase of the specific radioactivity of up to 20%. Gamma ray spectroscopy was also performed...

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