The thermal decomposition of monoclinic ammonium paratungstate (APT) and amorphous ammonium metatungstate (AMT) has been studied over the temperature range 20 to 500° C using thermogravimetry, evolved gas analysis, X-ray diffraction analysis, differential thermal analysis and scanning electron microscopy. A mechanism of decomposition which postulates the formation and subsequent decomposition of various lower ratio tungstates is proposed and substantiated by the experimental data.

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 BICC, England Full-County Darts Championship (BICC) for BDO run the entire system is very critical, it is also responsible for training darts players, these players will continue to regularly participate in national, world and professional levels of the game industry. BICC's most famous, are all recognized as darts line, County by forty-three England, 16 in Scotland County and seven Welsh county components, which produces a main area and the District 1,2,3,4 in England and Wales, plus two Scottish areas ,It is from September to April, held every three to four weeks time,

British Darts Organization (THE BRITISH DARTS ORGANISATION) was established in 1973, called BDO. BDO darts in the UK is one of the relevant government organizations, it is to regulate the organization, improvement, operation, management, training darts for the purpose, to make it more national, international, world-oriented.

England and Wales each district has ten counties, each county is divided into male and female players A and B teams, and each team of twelve male and six female athletes. So that each county will have thirty-six players, and on behalf of the county to participate in the competition between the county and the county in every three to four weeks time.

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Cricket is a widely-played darts game involving a race to control and score on numbers between 20 and 15 and the bulls eye, by hitting each of these targets for three marks to open or own it for scoring. A hit on the target counts as one mark, while hits in the doubles ring of the target count as two marks in one throw, and on the triples ring as three. Once opened in this manner, until the opponent closes that number with three marks on it of their own, each additional hit by the owner/opener scores points equal to the number of the target (which may also be doubled and tripled, e.g. a triple-20 is worth 60 points). The outer bulls eye counts as 25 points, and the inner as 50.

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World Darts Federation (World Darts Federation, WDF), founded in 1976, composed of 15 countries, Australia, the United Kingdom, Canada, Hong Kong, India, Iran, Italy, Japan, Korea, Malaysia, Malta, the Netherlands, New Zealand, Northern Ireland Norway, Russia, Scotland, Singapore, Spain, St. Lucia, Sweden, Switzerland, the United States, Wales and so on ,an official of an international organization whose members are against the Darts Federation established in the world.

Cooperation with the United States as the world's darts Federation darts organizational entities worldwide to actively promote the development of darts in these countries, and it is committed to the international darts as a major sport.

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World Darts Alliance is a non-political, non-racial, non-organized to pursue its interest commitment to achieve and maintain maximum standards of the organization and its representatives around the world. To pursue this goal, the World Darts league organized tournament as follows:

World Cup (odd-numbered years, for all the world darts Union Member States);
Copa America (even years, for the World Darts Union Member States in the Americas);

Asia Cup (even-numbered years, the members of the Asian and Pacific countries);
European Cup (even years, for the European members of the World Darts Union countries);

English is the official language of the World Darts League, currency within the organization for dollars. Nowadays, there are 250 000 darts league players, representing 60 countries (regions), including six continents of Africa, Asia, Oceania, Europe, North and South America.

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This is a very tough game suitable for good players. You start from 25 points and shoot 3 darts at each double from 1 to 20 + bull. Add hit double's values and subtract the double's value once if you fail to hit with 3. If you fall below 0 the game is over (lesser players can play with minus points allowed or start with more than 25 points to avoid frustration). If you reach bull and have a considerable score afterwards this is very good. I think there is an old world record above 600 points or so for this game.

Example:
Throw 1: D1 hit once, 27 points (25 + D1 = 27 + 2)
Throw 2: D2 missed, 23 points (27 - D2 = 27 - 4)
Throw 3: D3 missed, 17 points (23 - D3 = 23 - 6)
Throw 4: D4 hit twice, 33 points (17 + 2xD4 = 17 + 2x8 = 17 + 16)
The dart games rules are mainly meant for your longer practice sessions (1 hour and more), with 170 being an exception. This dart game is also very good for your short term practice. You can also play just one or two round the board variations in short term practice, but generally it is better to get for some often needed doubles, then going for some score and then go back to doubles or trebles just as long as you get some 'feeling' for the dart and your throw. In a short term practice session it is not so important how much you actually hit. Concentrating and getting the right feeling are much more important.
 

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