نتایج جستجو برای: raw and mineral materials
تعداد نتایج: 16890923 فیلتر نتایج به سال:
The inevitable depletion of mineral resources, the constant deterioration of the geological and mining conditions for the development of mineral deposits and the restoration of raw materials from mining waste by recycling are all urgent problems we face today. The solution to this problem may ensure: a considerable extension of raw material source; decrease of investments in opening new deposit...
Natural minerals, such as bentonite, kaolinite, biotite, vermiculite, and glauconite, which have sufficiently high performance properties in the softening of industrial waste water, cleaning heavy metals, are promising. To study physical chemical glauconites from various deposits country, samples glauconite mineral were brought Parkent, Bukhara, Karakalpak mountain reserves, their studied, comp...
Abstract The major share of raw materials needed to sustain our present lifestyle and even more importantly, required for the crucial green transition, are sourced outside Europe. European Commission aims enhance Europe's resilience strengthen domestic sourcing. Although Europe has a long tradition mining extractive activities, it is acknowledged that there several challenges achieve sourcing c...
Despite EU climate objectives and raw material needs, there is a growing concern caused by the limited direct access to primary sources supplies of valuable materials, heavy reliance on imports. Member states are encouraged design implement effective policies improve domestic materials promote green energy, thus advancing European competitiveness, particularly for high tech products, emerging i...
learning english is very popular all over the world nowadays and it is considered a high prestigious language among citizens of different societies. one of the most important materials for learning a new language are textbooks. the debate that whether learning a new language is natural and neutral or ideological and influential on people’s worldviews, has always been of great importance.
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