STER - version 8.11 (II cover page) The STER Computer System Supporting Occupational Health and Safety Management is used to manage OSH in an enterprise. This multifunctional and comprehensive tool is addressed to business owners, OHS specialists in measuring laboratories.
Cryptocurrencies (4) ISO already has a standard for physical currencies - ISO 4217. It has been in use since 1978 and contains a list of currency codes verified by the World Bank. These codes are three letters. They are used by banks around the world during financial transactions. However, the development of digital currencies is so fast that the codes cannot keep up. The ISO 4217 standard is able to allocate approx. 500 three-letter codes, while digital currencies are created and used on the Internet in thousands of separate versions.
World water resources in the face of climate change We have been observing the deepening drinking water deficit in the world for a long time. Although in the environment it is the dominant factor, only a small part is fresh water, which can be used for consumption and sanitary and hygienic purposes. It is estimated that the total fresh water reservoir on Earth is about 35 million m³. Glaciers and snow covers located in Antarctica accumulate as much as 61% of it, the remaining part is groundwater constituting about 30%, which is a source of supply of drinking water due to its very good quality. The remaining amount of fresh water is only 0.4% and includes lakes and artificial reservoirs, soil water, atmospheric water, marshes and wetlands, and river water. Rivers, despite the small volume of water, because about 0.006% of fresh water is characterized by a relatively short renewable time, in the order of only a dozen or so days, constitute the basic source of supply.