نتایج جستجو برای: radiation patterns

تعداد نتایج: 642282  

Journal: :Public Health of Indonesia 2023

Background: Coal production in Indonesia continues to increase meet national energy needs and export demand. Solid waste from the coal combustion process is estimated significantly. One of hazardous mining wastes TENORM, but some TENORM classified as goods with economic value. The problem this research that volume containing quite large, disposal, use, recycling has potential cause contaminatio...

Journal: :iranian journal of nuclear medicine 2004
davood beiki soraya shahhoseeini simin dadashzadeh mohammad eftekhari hoda tayebi

sodium iodide-131 is administrated for treatment of hyperthyroidism and thyroid cancer. iodine-131 has multiple routs of excretion (urine, saliva, sweat, milk, feces, exhalation) from the body. patients receiving sodium iodide-131 therapy exposes other persons and the environment to unwanted radiation and contamination. the major source of radiation dose from administration of iodine-131 is ext...

Journal: :Journal of radiosurgery and SBRT 2011
Jared Robbins Ira Wollner Samuel Ryu

Radiation recall dermatitis has been documented to occur in previously irradiated skin (within the radiation port) the administration of some chemotherapeutic agents. Clinically, it can occur weeks or months after radiation therapy, and resembles the appearance of acute radiation skin reaction. The patterns of the reaction correspond with radiation fields and skin doses. We report a case of rec...

Journal: :international journal of occupational hygiene 0
sadegh hazrati department of environmental health, school of public health, ardabil university of medical science, iran hadi sadeghi department of environmental health, school of public health, ardabil university of medical science, iran mojtaba amani department of basic science, school of medicine, ardabil university of medical science, ardabil, iran babak alizadeh irandepartment of environmental health, school of public health, ardabil university of medical science, iran hasan fakhimi department of environmental health, school of public health, ardabil university of medical science,iran soheila rahimzadeh ardabil province of health center, ardabil university of medical science, ardabil, iran.

gamma rays pose enough energy to remove electrons from atoms of absorbing material including human body and adversely affect human health. the external exposure of human beings to natural environmental gamma radiation normally exceeds that from all man-made sources combined. therefore, we monitored gamma dose rate in indoor environments and estimated corresponding annual effective dose in selec...

2017
Ah Ram Chang Won Park

PURPOSE The purpose of this study was to describe treatment patterns of radiotherapy (RT) for prostate cancer in Korea. MATERIALS AND METHODS A questionnaire about radiation treatment technique and principles in 2013 was sent to 83 radiation oncologists and data from 57 hospitals were collected analyzed to find patterns of RT for prostate cancer patients in Korea. RESULTS The number of pati...

2012
Christoph Lahtz Steven E. Bates Yong Jiang Arthur X. Li Xiwei Wu Maria A. Hahn Gerd P. Pfeifer

Environmental chemicals and radiation have often been implicated in producing alterations of the epigenome thus potentially contributing to cancer and other diseases. Ionizing radiation, released during accidents at nuclear power plants or after atomic bomb explosions, is a potentially serious health threat for the exposed human population. This type of high-energy radiation causes DNA damage i...

Journal: :Molecular biology and evolution 2003
Peter F Arndt Dmitri A Petrov Terence Hwa

Differences in the regional substitution patterns in the human genome created patterns of large-scale variation of base composition known as genomic isochores. To gain insight into the origin of the genomic isochores, we develop a maximum-likelihood approach to determine the history of substitution patterns in the human genome. This approach utilizes the vast amount of repetitive sequence depos...

2000
V. I. Alexeev E. G. Bessonov

Experiments on the generation of long wavelength edge radiation along directions nearly coincident with the axis of a straight section of the " Pakhra " synchrotron Abstract Generation of long wavelength edge radiation along directions nearly coincident with the axes of straight sections of storage rings and synchrotrons is discussed. The removal of destructive interference from the superimpose...

2006
Chatree Mahatthanajatuphat Prayoot Akkaraekthalin

A multiband double square loop antenna with fractal concept is proposed. The design is based on an initial model of fractal geometry and a double square slot antenna structure. The initial model of fractal geometry influences to the second frequency band and it will be carefully investigated. The radiation patterns of the proposed antenna are still similarly to bidirectional radiation pattern. ...

Journal: :Molecules 2011
Michal Hofer Milan Pospíšil

β-glucans are cell wall constituents of bacteria, yeast, fungi, and plants. They are not expressed in mammalian cells, but they are recognized by mammalian cells as pathogen-associated molecular patterns by pattern recognition receptors and thus act as biological response modifiers. This review summarizes data on the hematopoiesis-stimulating effects of β-glucans, as well as on their ability to...

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