Research of component composition and catalitic reactivity of metallurgical industry slag

The article deals with the research of component composition and catalitic reactivity of metallurgical waste products. The slags component composition was investigated by X-ray fluorescence analysis. The slag stuff has been modified with alkali (NaOH) and mineral acids (HNO3, H2SO4, HCI and H3PO4), and their catalytic reactivity in the catalytic decomposition of ethyl alcohol and hydrogen peroxide has been determined for the first time. The revealed catalytic reactivity of the slag staff for the decomposition of ethyl alcohol and hydrogen peroxide indicates the need for a more detailed research and development of an industrial non-ferrous waste treatment technology

Oxidized Starch/CMC based Biofilm: Synthesis and Characterization

Starch-based biopolymers, derived from renewable resources, offer a sustainable alternative to plastic packaging. They are biodegradable, versatile, and increasingly cost-effective, though challenges remain in improving their properties. This research centered on developing a biodegradable biofilm from oxidized corn starch and carboxymethylcellulose, using succinic anhydride as a crosslinker. The biofilm’s mechanical strength, water absorption, and biodegradability were evaluated and compared to a commercial biopolymer. The biofilm exhibited a strength of 0.78 MPa, absorbed 0.21% water, and had a biodegradability rate of 0.008%. These findings suggest that the biofilm has significant potential for industrial applications, particularly in the biofilms and bioplastics sector. This study contributes to the ongoing global efforts to create sustainable alternatives to conventional plastic packaging, a critical aspect of environmental preservation. The promising characteristics of the synthesized biofilm indicate its potential to significantly influence the future of packaging materials. This research marks a progressive step in the pursuit of sustainable packaging solutions

Nonketotic hyperglycinemia: case report

Nonketotic hyperglycinemia is а гаге autosomal recessive metabolic encephalopathy usually presenting in the neonatal period. It is an inborn error of glycine metabolism caused by deficiency in the glycine cleavage system and characterized by the accumulation of glycine in all body tissues. We introduced a newborn presented on the third day of life with hypotonia, poor feeding, apnea and coma. We performed extensive investigations before reaching the diagnosis including metabolic screen, electroencephalography, and magnetic resonance imaging. We discuss the importance of early recognition of symptoms, using selective metabolic screen to have a clear prognosis. It also helps in genetic counseling and prenatal diagnosis can be offered at the subsequent pregnancy.Некетотическая гиперглицинемия (НКГ) - редкая форма аутосомно-рецессивной метаболической энцефалопатии, вызванная дефектом глицин-расщепляющей ферментной системы, приводящим к накоплению глицина во всех тканях организма. Мы приводим клиническое наблюдение младенца, который на третьи сутки жизни развил мышечную гипотонию, апноэ и кому. Для подтверждения диагноза мы использовали селективный биохимический скрининг, а также данные нейровизуализации и электроэнцефалографии. В статье обсуждается важность ранней диагностики для определения прогноза заболевания, а так же для получения возможности пренатальной диагностики последующих беременностей в семье

Modification of nanostarch by citric acid

The negative impact of waste on the environment is growing with the declining oil reserves. Therefore, the attention to usage of green products and the green economy has grown worldwide. One manifestation of this is the growing demand for biomaterials. Starch is a biopolymer with large reserves of raw materials and chemical modification of its structure allows to obtain new materials. In this paper, we present the results of the experimental investigations on modifying of nanostarch with citric acid. Alcohol precipitation method was used for synthesis of nanostarch. The dispersion of the obtained nanostarch was studied by UV spectroscopy. The chemical structure of the modified nanostarch film was studied by FTIR spectroscopy. According to the results of FTIR, it was found that a new ester bonds are formed. Surface morphology was studied by scanning electron microscope and it was found that 0.1 g of film is completely soluble in water in 360 seconds according to the kinetics of water solubility. Key words: nanostarch film, citric acid, FTIR, natural polymer.