Қазақ ұлттық қыздар педагогикалық университеті / Казахский национальный женский педагогический университет
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- Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, КҮРІШ САБАНЫ МЕН МҰНАЙ ШЛАМЫН ҚОСЫП ӨҢДЕУ АРҚЫЛЫ ТҮЙІРШІКТЕЛГЕН КӨМІР АДСОРБЕНТІН АЛУ(2020-04-15)Цитирования (OpenAlex) 1Цитирования (OpenCitations) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, OBTAINING BIOCHAR FROM RICE HUSK AND STRAW(National Academy of Sciences of the Republic of Kazakhstan, 2021-02-01); С.А. КанжарThis paper presents the results of research on obtaining biochar from agricultural plant waste such as rice husk and straw. The selection of the optimal conditions for thermolysis, such as the duration and temperature of the process, has been conducted. The thermolysis products are characterized for iodine adsorption activity, cumulative water pore volume, and for bulk density. The porous structure of the obtained products has been studied by scanning electron microscopy. Based on the results of the research conducted, it has been found that biochars obtained from husk and straw with a thermolysis duration of 30 minutes have low iodine sorption characteristics and water pore volumes. With an increase in the duration of thermolysis, the sorption characteristics improve, the optimal for the husk is the thermolysis duration of 60 minutes at a temperature of 500°C, and for straw, the optimal thermolysis duration is 60 minutes at a temperature of 300°C. The best option is biochar obtained from rice straw at a duration of 60 minutes and a thermolysis temperature of 300°C, having an iodine adsorption activity of 54.61%, a cumulative water pore volume of 0.941 cm3/g and a bulk density of 169.29 g/dm3. The obtained biochars from rice husk and straw have been studied by scanning electron microscopy at 4300 and 5000 times magnification, and they have a developed porous structure. According to the literature, it is known that biochar can also be used as a renewable energy source. Research has been carried out to determine the calorific value of the obtained biochars. To compare the calorific value of rice husk, straw and the obtained biochars, their heating values have been determined on a calorimeter. The highest heating value has a biochar obtained from husk at a duration of 60 minutes and at a thermolysis temperature of 400°C with a value of 17.520 kJ/g, the optimal for biochar obtained from straw is a duration of 60 minutes and a thermolysis temperature of 400°C with a value of 16.451 kJ/g. The experimental data obtained make it possible to use the obtained biochar from rice straw in the future as a biofertilizer to improve the characteristics of soils, as well as to use biochar obtained from rice husk to produce renewable fuel.Цитирования (OpenAlex) 19Цитирования (OpenCitations) 2 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Problems of continuity of the content of the chemistry course in secondary schools and universities(National Academy of Education named after Y. Altynsarin, 2025-03-31); D.Zh. NiyazovaThe article examines the current issues of the relationship between chemistry education in secondary schools and universities. The discrepancy between the expectations of universities and the knowledge of high school graduates is introduced into the context, and key problems preventing the successful continuity of educational programs are identified. The current state of the content of the chemistry course at school and the requirements of universities for the level of training in this subject are analyzed. The authors analyze the current situation in educational programs, identifying contradictions between the requirements of universities and the level of training of high school graduates in the field of chemistry. The article examines in detail the key factors influencing the continuity of learning, such as differences in curricula, teaching methodology and evaluation criteria. The authors also offer an overview of existing methods and mechanisms for ensuring continuity and evaluate their effectiveness. The article highlights the roles of teachers, educational institutions and students in improving the coherence of educational programs, as well as provides specific recommendations for solving these problems. The article also provides an overview of the existing mechanisms for ensuring continuity and their effectiveness. Based on the study, specific recommendations are proposed to improve coordination between educational levels. The roles of teachers, educational authorities and universities in solving these problems are highlighted. In conclusion, the importance of joint efforts of all participants in the educational process to ensure high-quality training of future specialists in the field of chemistry is emphasized. - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Cadmium Complexes—A Novel Family in the Coordination Chemistry of 1,2-bis(arylimino)acenaphthenes(Multidisciplinary Digital Publishing Institute, 2025-05-02)Цитирования (OpenAlex) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, New Derivatives of Coumarin-3-carboxylic Acid Containing a Furopyridine Fragment: Synthesis and Some Properties(Pleiades Publishing, 2025-08-01)Цитирования (OpenAlex) 1Цитирования (OpenCitations) 1 - Некоторые метрики заблокированы вашиминастройками согласия
Тип записи:Публикация, Scientific and methodological foundations for teaching physicochemical analysis methods in continuous chemical education: a scoping review(Frontiers Media, 2026-09-28)