IN-FLIGHT EXPOSURE TO COSMIC RADIATION ALONG SOME COMMERCIAL AIRLINE ROUTES TO AND FROM NIGERIA

2017 ◽  
Vol 15 (1) ◽  
pp. 57-69
Author(s):  
O O ALATISE ◽  
A A ADEPOJU
Keyword(s):  
Effective Dose ◽  
Radiation Protection ◽  
Cosmic Radiation ◽  
Ground Level ◽  
Radiation Doses ◽  
Human Beings ◽  
The Earth ◽  
Commercial Airline ◽  
Additional Level ◽  
Airline Crews

The study of “external” radiation called cosmic radiation that strikes the earth from anywhere beyond the atmosphere is of great importance in radiation protection. All human beings are exposed to an uncontrollable amount of cosmic radiation on the ground level. Those who travel in space, airline crews and frequent flyers are exposed to additional level of cosmic radiation during their trip but unfor-tunately many of them are not aware of this. This workcalculates the exposure of aircrews and fre-quent flyers to cosmic radiation during travel along some air routes to and from Nigeria. The effective dose was computed using a dedicated software CARI 6M, developed by US FAA.The study focuses on the significance of the in-flight exposure, assessment and estimation of in-flight exposure using the dedicated software and some ways of controlling the exposures so that airline crews and frequent flyers are not exposed to fatal levels of radiation.It was observed that the cosmic radiation doses re-ceived by passengers and crew members on board on flights from Lagos Nigeria to countries in Amer-ica were more than what they received en-route countries in Asia.

A Software for Estimating Cosmic Radiation Exposure of Aircraft Crew

2013 ◽  
Vol 684 ◽  
pp. 234-237
Author(s):  
Qian Li ◽  
Shi Feng Zhang ◽  
Ying Jin Feng ◽  
Wei Ru Chen
Keyword(s):  
Effective Dose ◽  
Radiation Source ◽  
Cosmic Radiation ◽  
Radiation Doses ◽  
Three Dimension ◽  
Dose Rates ◽  
The Matrix ◽  
Ionization Radiation ◽  
Effective Radiation ◽  
Basic Standard

To estimate Radiation doses received onboard aircraft to protect aircrew in accordance with the basic standard on ionization radiation protection and radiation source safety of China, we has developed a software called CARD used to calculate the effective radiation doses. A three dimension matrix is kernel part of the CARD, in the matrix preserves information about effective dose rates of cosmic radiation for retrieval is constructed. The data of matrix are based on results of simulation and measurements. The comparisons between the calculated effective dose using this tool and using CARI-6 respectively for various flights are carried out. The present analysis shows that for the cosmic radiation, this software is sufficient to ensure a precision on the dose estimate of flight.

Application of radioactive substances in research in nuclear medicine: current trends and radiation exposure to the study subjects

2001 ◽  
Vol 40 (04) ◽  
pp. 116-121 ◽  
Author(s):  
E.-R. Schwarz ◽  
B. Bauer ◽  
D. Noßke ◽  
A. Erzberger ◽  
G. Brix ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Radiation Exposure ◽  
Effective Dose ◽  
Radiation Protection ◽  
Fold Increase ◽  
Human Beings ◽  
Aim Analysis ◽  
Diagnostic Studies ◽  
Radioactive Substances ◽  
Federal Institute

SummaryAim: Analysis of the application of radioactive substances in research in the field of nuclear medicine in human beings and of the resulting radiation exposure to study subjects. Methods: Assessment of applications for approval submitted in accordance with Paragraph 41 of the Radiation Protection Ordinance, evaluated by the Federal Office for Radiation Protection together with the Federal Institute for Pharmaceuticals and Medical Products, within the period from 1997 to 1999. Results: The focus of the studies on the diagnostic application of radioactive substances in medicine evaluated has, since 1998, shifted from oncological to neurological and psychological aspects, while, at the same time, the number of PET studies increased constantly. The proportion of healthy study subjects included in the diagnostic studies increased from 7 to 22%. The number of therapeutic applications of radioactive substances has, since 1997, undergone a three-fold increase, and in the process of this, the focus of attention lay within the area of radioimmuno-therapy and endovascular brachy-theropy. The effective dose was, among up to 49% of the investigated healthy study subjects higher than 5 mSv, and among up to 6% of these subjects was at levels of over 20 mSv. Up to 22% of the patients received, within the scope of diagnostic studies, an effective dose of between 20 and 50 mSv. An exceeding of the 50 mSv limit occurred among up to 3% of the patients. Conclusions: In spite of the increasing numbers of PET applications, conventional nuclear medicine has maintained its importance in the field of medical research. Further developments in the areas of radiochemistry and molecular biology led to an increase in the importance of radio-immuno therapy. The evaluation of new radiopharmaceuticals and the extension of basic biomedical research, resulted in an increase in the proportion of healthy study subjects included in the studies. The radiation exposure among subjects resulting directly from the studies showed, for the period of evaluation, an overall trend towards reduction.

Calculation of Cosmic Radiation Exposure on Flights with Computer Program

2013 ◽  
Vol 336-338 ◽  
pp. 2261-2264
Author(s):  
Ying Jin Feng ◽  
Wei Ru Chen ◽  
Qian Li ◽  
Shi Feng Zhang
Keyword(s):  
Computer Program ◽  
Radiation Exposure ◽  
Radiation Protection ◽  
Cosmic Radiation ◽  
Radiation Doses ◽  
Function Structure ◽  
Flight Data ◽  
Effective Doses

The computer program CARD for used to calculate cosmic radiation doses of aviation route is developed by CAUC. In this paper the function, structure and run principle of CARD is presented. for management of radiation protection, according to the flight data of routes the cosmic radiation effective doses of every year received by the flight personnel during 2001 to 2011 were calculated with software CARD. The results obtained that calculated with CARD were compared with the data calculated using the CARI-6 and measured, respectively. The CARD results and CARI6, and measured agree within 10%.

STUDY OF ENVIRONMENTAL AWARENESS AMONG SENIOR SECONDARY SCHOOL STUDENTS IN RELATION TO THEIR GENDER AND ACADEMIC STREAM

2015 ◽  
Vol 3 (2) ◽  
pp. 262-265
Author(s):  
Dr.Navdeep Kaur
Keyword(s):  
Environmental Education ◽  
Natural Resources ◽  
Large Scale ◽  
Human Life ◽  
Environmental Awareness ◽  
Human Beings ◽  
School Students ◽  
The Earth ◽  
Stages Of Learning ◽  
The Masses

Since its evolution environment has remained both a matter of awe and concern to man. The frontier attitude of the industrialized society towards nature has not only endangered the survival of all other life forms but also threatened the very existence of human life. The realization of such potential danger has necessitated the dissemination of knowledge and skill vis-a-vis environment protection at all stages of learning. Therefore, learners of all stages of learning need to be sensitized with a missionary zeal. This may ensure transformation of students into committed citizens for averting global environment crisis. The advancement of science and technology made the life more and more relaxed and man also became more and more ambitious. With such development, human dependence on environment increased. He consumed more resources and the effect of his activities on the environment became more and more detectable. Environment covers all the things present around the living beings and above the land, on the surface of the earth and under the earth. Environment indicates, in total, all of peripheral forces, pressures and circumstances, which affect the life, nature, behaviour, growth, development and maturation of living beings. Irrational exploitation (not utilization) of natural resources for our greed (not need) has endangered our survival, and incurred incalculable harm. Environmental Education is a science, a well-thought, permanent, lasting and integrated process of equipping learning experiences for getting awareness, knowledge, understanding, skills, values, technical expertise and involvement of learners with desirable attitudinal changes about their relationship with their natural and biophysical environment. Environmental Education is an organized effort to educate the masses about environment, its functions, need, importance, and especially how human beings can manage their behaviour in order to live in a sustainable manner.  The term 'environmental awareness' refers to creating general awareness of environmental issues, their causes by bringing about changes in perception, attitude, values and necessary skills to solve environment related problems. Moreover, it is the first step leading to the formation of responsible environmental behaviour (Stern, 2000). With the ever increasing development by modern man, large scale degradation of natural resources have been occurred, the public has to be educated about the fact that if we are degrading our environment we are actually harming ourselves. To encourage meaningful public participation and environment, it is necessary to create awareness about environment pollution and related adverse effects. This is the crucial time that environmental awareness and environmental sensitivity should be cultivated among the masses particularly among youths. For the awareness of society it is essential to work at a gross root level. So the whole society can work to save the environment.

Religion in the Age of the Anthropocene

2019 ◽  
Author(s):  
Arianne F. Conty
Keyword(s):  
Social Sciences ◽  
Climate Change ◽  
Natural Sciences ◽  
Human Beings ◽  
Risks And Benefits ◽  
Human Exceptionalism ◽  
The Earth ◽  
Contemporary Christian ◽  
Genesis 1 ◽  
Forms Of Life

Though responses to the Anthropocene have largely come from the natural and social sciences, religious responses to the Anthropocene have also been gaining momentum and many scholars have been calling for a religious response to complement scientific responses to climate change. Yet because Genesis 1:28 does indeed tell human beings to ‘subdue the earth’ monotheistic religions have often been understood as complicit in the human exceptionalism that is thought to have created the conditions for the Anthropocene. In distinction to such Biblical traditions, indigenous animistic cultures have typically respected all forms of life as ‘persons’ and such traditions have thus become a source of inspiration for ecological movements. After discussing contemporary Christian efforts to integrate the natural sciences and the environment into their responses to the Anthropocene, this article will turn to animism and seek to evaluate the risks and benefits that could ensue from a postmodern form of animism that could provide a necessary postsecular response to the Anthropocene.

Radiation exposure of the staff at the therapeutic and diagnostic nuclear medicine department

2008 ◽  
Vol 47 (04) ◽  
pp. 175-177 ◽  
Author(s):  
J. Dolezal
Keyword(s):  
Nuclear Medicine ◽  
Radiation Exposure ◽  
Effective Dose ◽  
Radiation Protection ◽  
Annual Effective Dose ◽  
Protection Measures ◽  
Professional Groups ◽  
Personal Dosimetry ◽  
The Mean ◽  
Administered Activity

SummaryAim: To assess a radiation exposure and the quality of radiation protection concerning a nuclear medicine staff at our department as a six-year retrospective study. Therapeutic radionuclides such as 131I, 153Sm, 186Re, 32P, 90Y and diagnostic ones as a 99mTc, 201Tl, 67Ga, 111In were used. Material, method: The effective dose was evaluated in the period of 2001–2006 for nuclear medicine physicians (n = 5), technologists (n = 9) and radiopharmacists (n = 2). A personnel film dosimeter and thermoluminescent ring dosimeter for measuring (1-month periods) the personal dose equivalent Hp(10) and Hp(0,07) were used by nuclear medicine workers. The wearing of dosimeters was obligatory within the framework of a nationwide service for personal dosimetry. The total administered activity of all radionuclides during these six years at our department was 17,779 GBq (99mTc 14 708 GBq, 131I 2490 GBq, others 581 GBq). The administered activity of 99mTc was similar, but the administered activity of 131I in 2006 increased by 200%, as compared with the year 2001. Results: The mean and one standard deviation (SD) of the personal annual effective dose (mSv) for nuclear medicine physicians was 1.9 ± 0.6, 1.8 ± 0.8, 1.2 ± 0.8, 1.4 ± 0.8, 1.3 ± 0.6, 0.8 ± 0.4 and for nuclear medicine technologists was 1.9 ± 0.8, 1.7 ± 1.4, 1.0 ± 1.0, 1.1 ± 1.2, 0.9 ± 0.4 and 0.7 ± 0.2 in 2001, 2002, 2003, 2004, 2005 and 2006, respectively. The mean (n = 2, estimate of SD makes little sense) of the personal annual effective dose (mSv) for radiopharmacists was 3.2, 1.8, 0.6, 1.3, 0.6 and 0.3. Although the administered activity of 131I increased, the mean personal effective dose per year decreased during the six years. Conclusion: In all three professional groups of nuclear medicine workers a decreasing radiation exposure was found, although the administered activity of 131I increased during this six-year period. Our observations suggest successful radiation protection measures at our department.

Living within Limits

1993 ◽  
Author(s):  
Garrett Hardin
Keyword(s):  
Population Control ◽  
Human Beings ◽  
Population Problem ◽  
The Earth ◽  
The Commons ◽  
Garrett Hardin ◽  
The Individual ◽  
Free Flow Of Information ◽  
Flow Of Information ◽  
Original Thinker

We fail to mandate economic sanity, writes Garrett Hardin, "because our brains are addled by...compassion." With such startling assertions, Hardin has cut a swathe through the field of ecology for decades, winning a reputation as a fearless and original thinker. A prominent biologist, ecological philosopher, and keen student of human population control, Hardin now offers the finest summation of his work to date, with an eloquent argument for accepting the limits of the earth's resources--and the hard choices we must make to live within them. In Living Within Limits, Hardin focuses on the neglected problem of overpopulation, making a forceful case for dramatically changing the way we live in and manage our world. Our world itself, he writes, is in the dilemma of the lifeboat: it can only hold a certain number of people before it sinks--not everyone can be saved. The old idea of progress and limitless growth misses the point that the earth (and each part of it) has a limited carrying capacity; sentimentality should not cloud our ability to take necessary steps to limit population. But Hardin refutes the notion that goodwill and voluntary restraints will be enough. Instead, nations where population is growing must suffer the consequences alone. Too often, he writes, we operate on the faulty principle of shared costs matched with private profits. In Hardin's famous essay, "The Tragedy of the Commons," he showed how a village common pasture suffers from overgrazing because each villager puts as many cattle on it as possible--since the costs of grazing are shared by everyone, but the profits go to the individual. The metaphor applies to global ecology, he argues, making a powerful case for closed borders and an end to immigration from poor nations to rich ones. "The production of human beings is the result of very localized human actions; corrective action must be local....Globalizing the 'population problem' would only ensure that it would never be solved." Hardin does not shrink from the startling implications of his argument, as he criticizes the shipment of food to overpopulated regions and asserts that coercion in population control is inevitable. But he also proposes a free flow of information across boundaries, to allow each state to help itself. "The time-honored practice of pollute and move on is no longer acceptable," Hardin tells us. We now fill the globe, and we have no where else to go. In this powerful book, one of our leading ecological philosophers points out the hard choices we must make--and the solutions we have been afraid to consider.

scholarly journals Radon Activity Concentrations in Natural Hot Spring Water: Dose Assessment and Health Perspective

2021 ◽  
Vol 18 (3) ◽  
pp. 920
Author(s):  
Eka Djatnika Nugraha ◽  
Masahiro Hosoda ◽  
June Mellawati ◽  
Untara Untara ◽  
Ilsa Rosianna ◽  
...  
Keyword(s):  
Public Health ◽  
Effective Dose ◽  
Radiation Protection ◽  
Water Samples ◽  
Hot Springs ◽  
Hot Spring ◽  
Annual Effective Dose ◽  
Spring Water ◽  
Dose Assessment ◽  
West Java

The world community has long used natural hot springs for tourist and medicinal purposes. In Indonesia, the province of West Java, which is naturally surrounded by volcanoes, is the main destination for hot spring tourism. This paper is the first report on radon measurements in tourism natural hot spring water in Indonesia as part of radiation protection for public health. The purpose of this paper is to study the contribution of radon doses from natural hot spring water and thereby facilitate radiation protection for public health. A total of 18 water samples were measured with an electrostatic collection type radon monitor (RAD7, Durridge Co., USA). The concentration of radon in natural hot spring water samples in the West Java region, Indonesia ranges from 0.26 to 31 Bq L−1. An estimate of the annual effective dose in the natural hot spring water area ranges from 0.51 to 0.71 mSv with a mean of 0.60 mSv for workers. Meanwhile, the annual effective dose for the public ranges from 0.10 to 0.14 mSv with an average of 0.12 mSv. This value is within the range of the average committed effective dose from inhalation and terrestrial radiation for the general public, 1.7 mSv annually.

Thinking technology for the Anthropocene: encountering 3D printing through the philosophy of Gilbert Simondon

2017 ◽  
Vol 24 (4) ◽  
pp. 539-554 ◽  
Author(s):  
Tom Roberts
Keyword(s):  
3D Printing ◽  
Human Beings ◽  
Anthropogenic Change ◽  
Technological Processes ◽  
The Earth ◽  
The Social ◽  
Human Thinking ◽  
The Moment ◽  
Gilbert Simondon ◽  
Do So

The notion that the Earth has entered a new epoch characterized by the ubiquity of anthropogenic change presents the social sciences with something of a paradox, namely, that the point at which we recognize our species to be a geologic force is also the moment where our assumed metaphysical privilege becomes untenable. Cultural geography continues to navigate this paradox in conceptually innovative ways through its engagements with materialist philosophies, more-than-human thinking and experimental modes of ontological enquiry. Drawing upon the philosophy of Gilbert Simondon, this article contributes to these timely debates by articulating the paradox of the Anthropocene in relation to technological processes. Simondon’s philosophy precedes the identification of the Anthropocene epoch by a number of decades, yet his insistence upon situating technology within an immanent field of material processes resonates with contemporary geographical concerns in a number of important ways. More specifically, Simondon’s conceptual vocabulary provides a means of framing our entanglements with technological processes without assuming a metaphysical distinction between human beings and the forces of nature. In this article, I show how Simondon’s concepts of individuation and transduction intersect with this technological problematic through his far-reaching critique of the ‘hylomorphic’ distinction between matter and form. Inspired by Simondon’s original account of the genesis of a clay brick, the article unfolds these conceptual challenges through two contrasting empirical encounters with 3D printing technologies. In doing so, my intention is to lend an affective consistency to Simondon’s problematic, and to do so in a way that captures the kinds of material mutations expressive of a particular technological moment.

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