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exposure thorium term

exposure thorium term - truncovi.cz

exposure thorium term indriveproject. Health Effects Following Long term Exposure to Thorium Dusts The likely threshold is the lowest value of thorium and dust lung burden of the miners suffering from pneumoconiosis stage 0+ (table 3) Table3 Likely threshold for lung burden from thorium containing dusts in the induction of stage O+ pneumoconiosis Likely threshold Workshop Miners Study may help ...

[PDF] Effects Following Long-term Exposure to Thorium ...

Thorium is present at 0.04%. Since 1982, we have been investigating the relationship between thorium lung burden and health effects on miners of this mine. The purpose of our investigation is to answer the following questions. How much inhaled thorium is deposited in the lungs of miners after long-term exposure?

exposure thorium term - judopromo.be

Exposure may be short-term acute exposure of intermediate duration or long-term chronic Thorium nuclear fuel Tidal Energy Titanium dioxide nanoparticles . Thorium and Thorium Dioxide Reference Module in . Discovered in 1829 thorium CASRN 7440-29-1 is a naturally occurring radioactive metal with no stable isotopes It is about as abundant as lead ...

Effects Following Long-term Exposure to Thorium Dusts . A ...

Corpus ID: 19237638. Effects Following Long-term Exposure to Thorium Dusts . A Fourteen-year Follow-up study in China @inproceedings{Xing2000EffectsFL, title={Effects Following Long-term Exposure to Thorium

Health effects following long-term exposure to thorium ...

There is a difference in cancer rates between those who have long-term exposure to dust containing thorium (in which carcinogenic ThO(2) and SiO(2) exist) and thoron progeny and those who have not.

Health effects following long-term exposure to thorium ...

A twenty-year follow-up study was carried out at Baiyun Obo Rare-earth Iron Mine in China, This mine has been mined since 1958. Its ore contains 0.04% of ThO 2 and 10% of SiO 2 . The purpose of this study is to investigate possible health effects in dust-exposed miners following long-term exposure to thorium-containing dusts and thoron progeny.

XA0300669 Health Effects Following Long-term Exposure

2003-7-2 · Health Effects Following Long-term Exposure to Thorium Dusts. A Fourteen-year Follow-up study, in China Chen Xing an, Cheng Young e, Zhen Rong Laboratory of Industrial Hygiene, Ministry of Public Health. P.O.Box 8018, Beijing, 100088, China INTRODUCTION A fourteen-year follow-up study was carried out at Baiyan Obo Rare-earth

Effects Following Long-term Exposure to Thorium Dusts . A ...

Effects Following Long-term Exposure to Thorium Dusts . A Fourteen-year Follow-up study in China @inproceedings{Xing2000EffectsFL, title={Effects Following Long-term Exposure to Thorium Dusts . A Fourteen-year Follow-up study in China}, author={Chen Xing and C. Young and Zhen Rong}, year={2000} } Chen Xing, C. Young, Zhen Rong; Published 2000

A 20-year follow-up study on the effects of long-term ...

A 20-year follow-up study on the effects of long-term exposure to thorium dust,陈兴安,程永娥,肖慧娟,邓芸辉,冯志良,陈莲,韩轩茂,杨英杰,董智华,甄荣-Chinese Medical Journal2003年第05期杂志在线阅读、文章

A 20-year follow-up study on the effects of long-term ...

2004-1-8 · Objective The purpose of this study is to investigate the possible effects of long-term exposure to dust containing thorium and thoron progeny dust-exposed miners. Methods A negative, high voltage, exhaled thoron progeny measurement system was ...

Exposure Thorium Term

Health Effects Following Long-term Exposure to Thorium. 2005-5-3 Health Effects Following Long-term Exposure to Thorium Dusts. A Fourteen-year Follow-up study in China Chen Xing an, Cheng Young e, Zhen Rong Laboratory of Industrial Hygiene, Ministry of Public Health.

exposure thorium term - lemoulindescomperes.fr

Thorium decays relatively slowly and emits alpha radiation which cannot penetrate human skin. Hence exposure to small amount of thorium is considered safe. The decay products of thorium include radium and radon which are dangerous radionuclides. Exposure to thorium containing dust can cause lung cancer, blood cancer, and liver or pancreas diseases.

Health effects following long-term exposure to thorium ...

Health effects following long-term exposure to thorium dusts: a twenty-year follow-up study in China - Volume 39 Issue 4

Health Effects Following Long-term Exposure to Thorium ...

2005-5-3 · Health Effects Following Long-term Exposure to Thorium Dusts. A Fourteen-year Follow-up study in China Chen Xing an, Cheng Young e, Zhen Rong Laboratory of Industrial Hygiene, Ministry of Public Health. P.O.Box 8018, Beijing, 100088, China INTRODUCTION A fourteen-year follow-up study was carried out at Baiyan Obo Rare-earth Iron Mine in China ...

Health effects following long-term exposure to thorium ...

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

Toxicological Profile for Thorium

2019-9-25 · The most likely sources of exposure of the general population to thorium are from inhalation of air and ingestion of food and drinking water containing thorium. Workers are

Thorium - Cancer-Causing Substances - National Cancer ...

2 天前 · Thorium is a naturally occurring radioactive metal that is found in soil, rock, and water. It is formed by the radioactive decay of uranium. Minerals such as monazite, thorite, and thorianite are rich in thorium and may be mined for the metal. Thorium has

A 20-year follow-up study on the effects of long-term ...

A 20-year follow-up study on the effects of long-term exposure to thorium dust,陈兴安,程永娥,肖慧娟,邓芸辉,冯志良,陈莲,韩轩茂,杨英杰,董智华,甄荣-Chinese Medical Journal2003年第05期杂志在线阅读、文章

Thorium Exposure Drives Fatty Acid and Metal Transfer

2021-4-9 · Thorium (Th) waterborne exposure induced bioaccumulation in biofilms and a reduction in fatty acids (FAs) such as C20:2n-6. The Th-exposed biofilm

A 20-year follow-up study on the effects of long-term ...

A 20-year follow-up study on the effects of long-term exposure to thorium dust 下 载 在线阅读 收 藏 导出 分享 摘要: Objective The purpose of this study is to investigate the possible effects of long-term exposure to dust containing thorium and thoron progeny ...

Exposure Thorium Term - modevakcentrumcreatief.nl

Exposure Thorium Term. Thorium . Isotopes. Naturally occurring thorium is composed of one isotope: 232 Th. Thirty radioisotopes have been characterized, with the most abundant and/or stable being 232 ...

exposure thorium term - lemoulindescomperes.fr

Thorium decays relatively slowly and emits alpha radiation which cannot penetrate human skin. Hence exposure to small amount of thorium is considered safe. The decay products of thorium include radium and radon which are dangerous radionuclides. Exposure to thorium containing dust can cause lung cancer, blood cancer, and liver or pancreas diseases.

Health effects following long-term exposure to thorium ...

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

Metals and Controls Corp. Thorium and Welding

2019-4-29 · White Paper Metals and Controls Corp. Thorium and Welding Exposure Model April 8, 2019 Page 3 of 9. This is a working document prepared by NIOSH’s Division of Compensation Analysis and Support (DCAS) or its contractor for use in discussions

Health Effects Following Long-term Exposure to Thorium

2015-3-30 · long-term exposure to thorium-containing dusts (carcinogens are ThO2 and SiO2) and thoron progeny. This is the first evidence in humans of the carcinogenicity after long-term inhalation of thorium-containing dusts and thoron progeny. The total person-years of observation for the dust-exposed miners and the controls were 62712 and 34672 ...

THORIUM NITRATE HAZARD SUMMARY WORKPLACE

2012-1-25 · * Thorium Nitrate can irritate the skin causing a rash or burning feeling on contact. * Exposure to Thorium Nitrate can irritate the eyes, nose, and throat. Chronic Health Effects The following chronic (long-term) health effects can occur at some time after exposure to Thorium Nitrate and can last for months or years: Cancer Hazard

Long-term health effects of thorium compounds on

Long-term health effects of thorium compounds on exposed workers: the complete blood count

Atmospheric thorium pollution and inhalation exposure in ...

2016-12-1 · Exposure to radionuclide thorium (Th) has generated widespread public concerns, mainly because of its radiological effects on human health. Activity levels of airborne 232 Th in total suspended particulate (TSP) were measured in the vicinity of the largest rare earth mine in China in August 2012 and March 2013. The mean activity concentrations of 232 Th in TSP ranged from 820 μBq m − 3 in a ...

Health effects following long-term exposure to thorium ...

A fourteen-year follow-up study was carried out at Baiyan Obo Rare-earth Iron Mine in China. It has been operating for forty one years. It's ore contains ThO2 at a percentage of 0.04. The purpose of this study is to investigate the possible health effects of 2903 d

Thorium - an overview | ScienceDirect Topics

Thorium is poorly absorbed from both the lung and digestive tract, and 70% of the thorium reaching the blood is translocated to the bone, 4% to the liver, and 16% to all other organs and tissues of the body. Thorium accumulates in the liver, spleen, lymph nodes, and bone marrow, leading to long-term exposure with a diversity of cells.