scholarly journals Double-layered fiber for lightweight flexible clothing providing shielding from low-dose natural radiation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seon-Chil Kim ◽  
Jun Sik Son
Keyword(s):  
Low Dose ◽  
Layered Composite ◽  
Radiation Shielding ◽  
Flight Attendants ◽  
Low Dose Radiation ◽  
Natural Radiation ◽  
Composite Yarn ◽  
Materials Used ◽  
Fiber Fabric ◽  
Dose Radiation

AbstractNatural and medical radiation are the most frequent sources of daily low-dose radiation exposure for the general public, but these radiation levels are generally acceptable. Among various occupations, aviation crew members and medical workers are exposed to high levels of radiation from scattered rays. This study focused on developing clothing for shielding aviation crew members from natural radiation during air travel. Materials were selected considering their radiation-shielding properties. A tungsten double-layered composite yarn and a polyethylene terephthalate (PET) fiber fabric containing BaSO4 were manufactured. The characteristics and shielding performances of the products were analyzed. Prototypes of a protective scarf (for shielding the thyroid gland) and apron (for shielding the torso) for flight attendants were produced. A lightweight fabric was produced that neither restricts the movement of the wearer nor causes them skin discomfort. The shielding performances of the tungsten composite and PET fiber fabrics containing BaSO4 were 0.018 mmPb and 0.03 mmPb, respectively, demonstrating low-dose shielding that may be useful for protecting aviation crew members from scattered rays. The characteristics of the developed fibers are comparable to those of materials used in clothing production; therefore, low-dose radiation-shielding clothing could be manufactured for use in aviation, medical, and other industries.

Should We Discount Low Dose Radiation Risk?

2003 ◽  
Author(s):  
Richard Peckover ◽  
Nick Priest
Keyword(s):  
Precautionary Principle ◽  
Low Dose ◽  
Radiation Risk ◽  
Low Dose Radiation ◽  
Natural Radiation ◽  
Dose Irradiation ◽  
Current Concern ◽  
The Relationship ◽  
Dose Radiation

This paper addresses four inter-related topics of current concern: (i) the relationship between man-made and natural radiation; (ii) the uncertainties in predicted consequences following low dose irradiation; (iii) the scope for using a Properly Prioritized Precautionary Principle (P4); and (iv) why unobservable effects should not be a cause of concern.

scholarly journals Development of a Lightweight Tungsten Shielding Fiber That Can Be Used for Improving the Performance of Medical Radiation Shields

2021 ◽  
Vol 11 (14) ◽  
pp. 6475
Author(s):  
Seon-Chil Kim
Keyword(s):  
Scattered Radiation ◽  
Low Dose ◽  
Radiation Shielding ◽  
Shielding Effectiveness ◽  
Tungsten Fiber ◽  
Low Dose Radiation ◽  
X Ray ◽  
Medical Institutions ◽  
X Ray Imaging ◽  
Dose Radiation

Radiation exposure in medical institutions is mainly due to low doses. Low-dose radiation mainly means scattered radiation, and such scattered radiation can be shielded with a lightweight shielding suit. In this study, the shielding performance of shielding fabrics woven by winding polyethylene (PE) yarn around a 30 μm tungsten wire was evaluated. To improve the shielding performance, an air pressure dispersion process of coating tungsten nanopowder on the fiber was developed. The radiation shielding effectiveness of the shielding fibers with and without dispersed tungsten nanopowder were compared by measuring the spatial dose inside the diagnostic X-ray imaging room of a medical institution. The results of the experiment confirmed that the fabric coated with tungsten nanopowder improved the shielding performance of the general tungsten fiber by approximately 15% and provided relatively effective low-dose radiation shielding at approximately 1.2 m of the X-ray imaging equipment. This study shows that tungsten fiber can be helpful in manufacturing lightweight shielding clothing for protection from scattered radiation in medical institutions.

scholarly journals A systematic review on the effect of low-dose radiation on hearing

2021 ◽  
Author(s):  
Srikanth Nayak ◽  
Arivudai Nambi ◽  
Sathish Kumar ◽  
P Hariprakash ◽  
Pradeep Yuvaraj ◽  
...  
Keyword(s):  
Systematic Review ◽  
Ionizing Radiation ◽  
Radiation Exposure ◽  
Low Dose ◽  
Behavioral Symptoms ◽  
National Council ◽  
Low Dose Radiation ◽  
Cochlear Function ◽  
High Frequencies ◽  
Dose Radiation

AbstractNumerous studies have documented the adverse effects of high-dose radiation on hearing in patients. On the other hand, radiographers are exposed to a low dose of ionizing radiation, and the effect of a low dose of radiation on hearing is quite abstruse. Therefore, the present systematic review aimed to elucidate the effect of low-dose ionizing radiation on hearing. Two authors independently carried out a comprehensive data search in three electronic databases, including PUBMED/MEDLINE, CINAHL, and SCOPUS. Eligible articles were independently assessed for quality by two authors. Cochrane Risk of Bias tool was used assess quality of the included studies. Two articles met the low-dose radiation exposure criteria given by Atomic Energy Regulatory Board (AERB) and National Council on Radiation Protection (NCRP) guidelines. Both studies observed the behavioral symptoms, pure-tone hearing sensitivity at the standard, extended high frequencies, and the middle ear functioning in low-dose radiation-exposed individuals and compared with age and gender-matched controls. One study assessed the cochlear function using transient-evoked otoacoustic emissions (TEOAE). Both studies reported that behavioral symptoms of auditory dysfunction and hearing thresholds at extended high frequencies were higher in radiation-exposed individuals than in the controls. The current systematic review concludes that the low-dose ionizing radiation may affect the hearing adversely. Nevertheless, further studies with robust research design are required to explicate the cause and effect relationship between the occupational low-dose ionizing radiation exposure and hearing.

Sensitization of cervical cancer cell lines to low-dose radiation by retinoic acid does not require functional p53

2005 ◽  
Vol 97 (1) ◽  
pp. 142-150 ◽  
Author(s):  
Todd D. Tillmanns ◽  
Scott A. Kamelle ◽  
Suresh Guruswamy ◽  
Natalie S. Gould ◽  
Teresa L. Rutledge ◽  
...  
Keyword(s):  
Cervical Cancer ◽  
Retinoic Acid ◽  
Cell Lines ◽  
Cancer Cell ◽  
Low Dose ◽  
Cancer Cell Lines ◽  
Cervical Cancer Cell ◽  
Low Dose Radiation ◽  
Dose Radiation
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