The presence of uranium-containing wastes from large provinces in the Republic Kazakhstan significantly complicates ecological situation, causing damage to soil and hydrosphere due uncontrolled spread volumes natural waters contaminated with radionuclides. They are usually utilized by sorption method; however, use synthesized materials is limited their high price, minerals low characteristics. ...

The boom in technological advances recent decades has led to increased demand for rare earth elements (REEs) (also known as metals) across various industries with wide-ranging industrial applications, including the clean energy sector, but some environmental, economic, and social footprint concerns. This paper reviews complexities of production, consumption, reuse or recovery REEs, presenting c...

Vertical specialization (VS) trade, trade in goods that incorporate imported inputs, has grown rapidly since the 1960s. While the share of trade in inputs has not increased, the types of inputs traded have shifted from raw materials to manufactured parts. I argue that declining trade costs are an important explanation for these facts. I present a three stage vertical specialization trade model,...

This study investigated effects of mature compost on gaseous emissions during composting using pig manure amended with corn stalks. Apart from a control treatment, three treatments were conducted with the addition of 5% (wet weight of raw materials) of mature compost: (a) mixing raw materials with mature compost at the beginning of composting; (b) covering raw materials with mature compost thro...

The name "ginseng" is collectively used to describe several plant species, including Panax ginseng (Asian/Oriental ginseng), P. quinquefolius (American ginseng), P. pseudoginseng (Pseudoginseng) and Eleutherococcus senticosus (Siberian ginseng), each with different applications in traditional medicine practices. The use of a generic name may lead to the interchangeable use or substitution of ra...

A rapid method for the determination of chondroitin sulfate in raw materials was developed. The samples were finely powdered, dissolved in water, and injected directly into the liquid chromatograph. The method used a C18 column, a wavelength of 195 nm, and a mobile phase containing octane sulfonic acid. The method gave results that were slightly different from those generated by atitrimetric me...

Irradiation of food raw materials has a double effect. Firstly, actually for which the irradiation is carried out, destruction of microorganisms is provided to increase the shelf life of products. Secondly, radiation has a danger from the point of view of the effect on the raw materials and products based on it, causing chemical transformations of constituent components by the mechanism of radi...