1. Exposures from natural sources

1. Exposures from natural sources . 118 120 25

Annual effective doses to adults from natural sources

For this limited group, the exposures are similar to those from natural sources.

For small subgroups, occupational exposures are about five times those from natural sources.

periods of exposure to natural sources Basis

Equivalent period of exposure to natural sources

Table 1 shows typical average annual effective doses in adults from the principal natural sources.

One way of providing a perspective on the implications of man made radiation sources is to compare the resulting doses with those from natural sources.

Some sources of exposure, for example, natural sources, can be viewed as continuing at a constant level.

Because this method does not involve engineering in a tag, it can be used for proteins from natural sources.

However, there are no significant natural sources of this substance on Earth.

a Doses due to adventitious exposures to natural sources are not included.

Excluding severe accidents, the doses to the most highly exposed individuals do not exceed, and rarely approach, doses from natural sources.

From private sources.

35. All living organisms are exposed to radiation from natural sources (cosmic rays and the natural radionuclides present in all components of the terrestrial and aquatic environments) and from local, regional and global contamination arising from human activities.

Observations can be made of general levels of haze, and both meteorological and remote sensing satellite imagery show plumes or clouds of dust or smoke from extensive natural sources and, in some cases, from industrial point sources.

Both figures are of the same order of magnitude as the effective dose from a single year of exposure to natural sources.

The annual collective dose from these natural sources is estimated to be about 8,600 man Sv, with the main contribution coming from underground, non uranium mining.

REMUNERATION FROM OUTSIDE SOURCES

While 25 of the natural gas in Ukraine comes from internal sources, about 35 comes from Russia and the remaining 40 from Central Asia through transit routes that Russia controls.

The radiation from natural sources includes cosmic radiation, external radiation from radionuclides in the earth apos s crust and internal radiation from radionuclides inhaled or ingested and retained in the body.

One major exception is the large workforce exposed to enhanced levels of radiation from natural sources, for example, in parts of the extractive industries.

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ODA from all sources a

On a global basis, this accident corresponded to about 20 days apos exposure to natural sources.

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Death from natural causes.

Named natural hybrids Borneo Nepenthes natural hybrids recorded from Borneo.

Some sources define egalitarianism as the point of view that equality reflects the natural state of humanity.

Secondary sources are written accounts of history based upon the evidence from primary sources.

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Compiled from various official and UN sources.

O. Marine pollution from land based sources

estimated extrabudgetary income from external sources . 107

III. ESTIMATED COMPLEMENTARY ASSISTANCE FROM OTHER SOURCES

a Estimated, from all sources of funding.

Contributions from non government sources 188 683.0

(c) Renewable sources of energy will be included as a component of the natural capital group of indicators.

While some of these sources are natural features of the environment, others are the result of human activities.

The Council asked the Panel of Experts to include in its reports information on the various sources of financing, such as from natural resources, for the illicit arms trade.

Workers in occupations involving adventitious exposure to natural sources, such as non uranium mining, are not usually monitored and their doses are excluded from the figures in table 3.