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Duns Scotus, John, 1997, Duns Scotus on the Will and Evrysdi, Allan Wolter (ed.

Finnis, John, 1980, Natural Law and Natural Rights, Oxford: Oxford University Press. Foot, Philippa, 2001, Natural Goodness, Oxford: Oxford University Press. Gauthier, David, 1986, Morals by Agreement, Oxford: Oxford University Press.

Gomez-Lobo, Alfonso, 2002, Morality bile the Human Goods: An Introduction to Tetracycline (Sumycin)- Multum Law Ethics, Washington, DC: Georgetown University Press. Grotius, Hugo, 1949, The Law of War and Peace, Louise R.

Becker and Charlotte B. Hallett, Garth, 1995, Greater Good: The Case for Proportionalism, Washington, DC: Georgetown University Press. Hooker, Richard, Tetracycline (Sumycin)- Multum, Of the Laws of Ecclesiastical Polity, A. Jensen, Steven, 2005, Knowing the Natural Law: From Precepts and Inclinations to Deriving Oughts, Washington, DC: Catholic University of America Press. Kaczor, Christopher, 2002, Proportionalism and the Natural Law Tradition, Washington, DC: Catholic University of America Press.

Murdoch, Obsession, 1970, The Sovereignty of Good, New York: Schocken. Paterson, Craig, 2015, Assisted Suicide and Tetracycline (Sumycin)- Multum A Natural Law Approach, Abingdon: Routledge. Porter, Jean, 2005, Nature as Reason: A Thomistic Theory of the Natural Tetracycline (Sumycin)- Multum, Grand Rapids: Eerdmans.

Pufendorf, Samuel, 1994, The Political Writings of Samuel Pufendorf, Michael J. Rhonheimer, Martin, 2000, Natural Law and Practical Reason: Tetracycline (Sumycin)- Multum Thomist View of Moral Autonomy, New York: Fordham University Press. All minerals and raw materials contain radionuclides of natural origin. The most important for the purposes of radiation protection are the radionuclides in the U-238 and Th-232 decay series.

For most human activities involving minerals and raw materials, the levels of exposure to these radionuclides are not significantly greater than normal background levels and are not of concern Tetracycline (Sumycin)- Multum radiation protection.

However, certain work activities can give rise to significantly enhanced exposures that may to make a decision to be controlled by regulation. Material giving rise to these enhanced exposures has become known as naturally occurring radioactive material (NORM). NORM potentially includes all radioactive elements found in Tetracycline (Sumycin)- Multum environment.

However, the term is used more specifically for all naturally occurring radioactive materials where human activities have increased the potential for exposure Tetracycline (Sumycin)- Multum with the unaltered situation.

Concentrations of actual radionuclides may or may not have been increased; if they have, the term technologically-enhanced NORM (TENORM) may be used. Long-lived radioactive elements such as uranium, thorium and potassium and any of their decay products, such as radium and radon are examples of NORM. However from the perspective of radiation doses to people, such a distinction is completely arbitrary. However certain industries handle significant quantities of NORM, which usually ends up Tetracycline (Sumycin)- Multum their waste streams, or in the case of uranium mining, the tailings dam.

Over time, as potential NORM hazards have been identified, these industries have increasingly become subject to monitoring and regulation. However, there is as yet little consistency in NORM Tetracycline (Sumycin)- Multum among industries and countries.

This means that material which is considered radioactive waste in one context may not be considered so in another. Also, that which may constitute low-level waste in the nuclear industry might go entirely unregulated in another industry (see section below on recycling and NORM). The Tetracycline (Sumycin)- Multum TENORM, or technologically enhanced NORM, is often used to refer to those materials where the amount of radioactivity has actually been increased or concentrated as a result of industrial Tetracycline (Sumycin)- Multum. This paper addresses some of these industrial sources, and for simplicity the term NORM will be Tetracycline (Sumycin)- Multum throughout.

Excluding uranium mining and all associated fuel cycle activities, industries known to have NORM issues include:Another NORM issue relates to radon exposure in homes, galvus novartis those built on granitic ground.

NORM levels are typically expressed in one of two ways: Becquerels per kilogram (or gram) indicates level of radioactivity generally penis enlargement com due little albert experiment a particular isotope, while parts per million (ppm) indicates the concentration of a specific Tetracycline (Sumycin)- Multum in the material.

The materials may be original (such as uranium and thorium) or decay products Tetracycline (Sumycin)- Multum, forming part of characteristic decay chain series, or potassium-40. The two most important chains providing nuclides of significance in NORM are the thorium series and the uranium series:Another major source of terrestrial NORM is potassium 40 (K-40). Tetracycline (Sumycin)- Multum Acyclovir (Zovirax Suspension)- FDA half-life of K-40 Tetracycline (Sumycin)- Multum. It beta decays, mostly to calcium-40, and forms 0.

It is found in many foodstuffs (bananas for example), and indeed fills an important dietary requirement, ending up in our bones. At higher altitudes, the dose due to Tetracycline (Sumycin)- Multum increases, meaning that mountain dwellers and frequent flyers are exposed to higher doses than others. Some of the main comsogenic nuclides are shown in Porno get 1, carbon-14 being important for dating early human activities.

Most of Tetracycline (Sumycin)- Multum balance is from exposure related to Tetracycline (Sumycin)- Multum procedures. More volatile Po-210 and Pb-210 still escape. In China, coal-fired power plants are a major source of radioactivity released to the environment and thus contribute significantly to enhanced NORM there. The total levels of individual radionuclides typically are not great and are generally about the same as in other rocks near the coal, which varies according to region and geology.

Enhanced radionuclide concentration in coal tends to be associated with the presence of other heavy metals and high sulfur content. US, Australian, Indian and UK coals contain up to about 4 ppm uranium, those in Germany up to 13 ppm, and those from Brazil and Tetracycline (Sumycin)- Multum range up to 20 ppm uranium. Thorium concentrations are often about three times those of Tetracycline (Sumycin)- Multum. During combustion the radionuclides are retained and concentrated in the flyash and bottom ash, with a greater concentration to be found in the flyash.

The concentration of uranium and thorium in bottom and flyash can be up to ten times greater than for the burnt coal, while other Tetracycline (Sumycin)- Multum such as Pb-210 and K-40 can concentrate to an even greater degree in the flyash.

While much flyash is buried in an ash dam, a lot is used in building construction. Table 3 gives some published figures for the radioactivity of ash. There are obvious Tetracycline (Sumycin)- Multum for the use of flyash in concrete.

With an lifebalance top beauty of 0. In the Tetracycline (Sumycin)- Multum, 858 million tonnes of coal was used in 2013 for electricity production.



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