В монографии изложены задачи построения несущей способности свай в сухих грунтах в квазистатической и динамической постановках. На практике широко распространено использование динамического метода определения несущей способности свайных фундаментов для различного рода грунтов.

Учебное пособие предназначено для бакалавров 1-3 курсов технических и экономических вузов, а также магистрантам и преподавателям вузов. В данном пособии изложен специальный курс по «Операционному исчислению» на основе интегрального преобразования Лапласа и его приложений к решению обыкновенных линейных дифференциальных уравнений, линейных интегральных уравнений типа свертки и краевых задач математической физики. Учебное пособие в полной мере обеспечивает студентов раздаточным материалом и дает возможность приобрети навыки самостоятельной работы, что является одним из основных моментов в услоовиях кредитной системы обучения.

Правовые основы безопасности жизнедеятельности и защиты окружающей среды для студентов-бакалавров специальности 5В073100 «Безопасность жизнедеятельности и защиты окружающей среды» являются основополагающими обширными знаниями по законодательству Республики Казахстан, которые включают в себя нормативно-правовую базу в области безопасности и охраны труда, чрезвычайных ситуаций, Гражданской обороны, промышленной и пожарной безопасности, защиты окружающей среды. Данное учебное пособие предназначено для специальности «Безопасность жизнедеятельности и защиты окружающей среды», для специалистов по безопасности и охране труда, предупреждению чрезвычайных ситуаций, промышленной и пожарной безопасности; по защите окружающей среды. Рекомендовано студентам всех специальностей КазНТУ имени К.И.Сатпаева для справочной информации по дипломному проектированию в части «Безопасность и охрана труда".

Плиты и пластины являются самыми распространенными элементами любой конструкции. В данном пособии даны краткие сведения по теории упругости, численным методам и представлен алгоритм расчета пластин и жестких плит методом конечных элементов, приведены примеры расчета для плоской задачи тонких пластин и для расчета жестких плит. Учебно-методическое пособие рекомендовано магистрантов, бакалавров, инженеров-проектировщиков в области строительных конструкций.

The article discusses the different factors that contribute to the success of youth entrepreneurship projects. The research conducted was a systematic review of various research articles that involved the use of keywords such as "youth entrepreneurship", "youth entrepreneurship success", and "entrepreneurial intention". The systematic review helped in categorizing the factors into major groups or areas of influence that affect the success of youth entrepreneurship. These factors have been categorized into five groups based on their role in the creation of such projects. The groups include young entrepreneurs, government, business environment, educational organizations, and the financial sector. Each group consists of 7 to 10 factors that impact the development and successful implementation of a young entrepreneur's project. Although the government, educational organizations, financial sector, and business environment are all important factors that affect young entrepreneurs, a recent review has shown that it is also important to study the personal characteristics of these individuals. This is because many of the traits that lead to success in entrepreneurship develop at a young age, before someone even begins their entrepreneurial journey. The article aims to build a list of important factors based on the group “young entrepreneurs “ and role in the project's creation. Using the fuzzy analytic hierarchy method, the article identifies the crucial factors for the development of youth entrepreneurship projects in the "Young Entrepreneur" group. These factors include cognitive capital, non-cognitive capital, human capital, entrepreneurial intentions, family support/help in running the business, and availability of a business plan. © 2024, Budapest Tech Polytechnical Institution. All rights reserved.

Due to the need to achieve the principles of sustainable development and to understand the processes of formation of phytocenoses in areas that were adversely affected by the industrial impact, this study assessed the condition of the Grachevsky uranium mine (Kazakhstan), which underwent conservation procedures about 25 years ago. The purpose is to determine the level of water quality and phytocenosis of the shores of the reservoir accumulating natural effluents from reclaimed dumps and anthropogenic sites of a uranium mine, as well as quality indicators and toxicology. The assessment included a qualitative research method (analysis of documents) to determine agro-climatic conditions and empirical methods of collecting information. The authors studied the intensity of ionizing radiation of the gamma background of the water surface of the reservoir (and sections of the shoreline and territories adjacent to the reservoir), and hydrochemical parameters of the waters of the reservoir, and performed a description of the botanical diversity. The vegetation cover of the sections of the reservoir shore is at different stages of syngenesis and is represented by pioneer groupings, group thicket communities, and diffuse communities. Favorable ecological conditions for the settlement and development of plants develop within the shores of the reservoir. The intensity levels of ionizing radiation do not exceed the maximum permissible levels and practically do not affect the formation of phytocenoses. An anthropogenically modified dry meadow with the participation of plants typical of the steppe zone has been formed on the floodplain terrace. Concerning the indicators of quality and toxicology of this reservoir, the water can be used for household and drinking purposes under the condition of prior water treatment. It can be concluded that a high level of natural purification of the reservoir waters occurred within twenty years after the reclamation of the uranium mine. © 2024, Instituto Internacional de Ecologia. All rights reserved.

Mining activities generate significant waste that poses serious environmental challenges, emphasizing the urgent need for effective waste management strategies. Mining waste, such as tailings, pyritic materials, ore residues, and metallurgical by-products, is rich in metals and metal oxides (e.g., Mg, Fe, and Al species) that can serve as catalytic active sites or supports. This intrinsic property highlights its potential for application as heterogeneous catalysts. In recent years, there has been growing interest in utilizing mining waste for catalytic applications, sparking preliminary studies that explore its catalytic capacities and mechanistic roles across various processes. This review consolidates recent advancements in employing mining waste as catalysts, focusing on their characterization, preparation methods, and catalytic performance in diverse reactions. These include dry and steam reforming, wastewater treatment processes (e.g., Fenton, photo-Fenton, peroxymonosulfate activation, electrochemical methods, and ozonation), environmental remediation (e.g., denitrification, carbon monoxide oxidation, and carbon dioxide reduction), and other chemical transformations (e.g., esterification, acetylation, and hydrodeoxygenation). Furthermore, the review discusses key challenges and critical considerations for advancing research in mining waste-based catalysts. © 2025 The Royal Society of Chemistry.

Abstract: A solid waste from zinc production, zinc plant residue (ZPR) is a valuable resource for the recovery of zinc (Zn), lead (Pb), and silver (Ag). However, the ferritic structure of ZPR makes it difficult to leach these metals. Here, in order to increase the reactivity of the ZPR, mechanical activation using a high-energy ball mill was used. The sample mechanically activated for 15 min was subjected to two-stage leaching with the hydrochloric acid (HCl) solution. At the 1st stage, 74% of Zn was recovered from mechanically activated ZPR sample into the solution under the following conditions: 1 M HCl, 120 min leaching duration, liquid-to-solid ratio (L : S) of 4, the temperature of 25°C, and a rotation speed of 600 rpm. At the 2nd stage, 56% of Pb and 53% of Ag were recovered from the leaching residue, under the following optimized conditions: 8 M HCl, 120 min leaching duration, liquid-to-solid ratio (L : S) of 20, the temperature of 25°C, and a rotation speed of 600 rpm. Сonceptual flow-diagram of the zinc, lead and silver selective recovery from ZPR is proposed herein. © 2022, Allerton Press, Inc.

Рассмотрены конструктивные особенности и обобщен опыт использования на строительно-монтажных работах сопоставимых по техническим параметрам стреловых самоходных и башенных передвижных кранов. Дано технологическое обоснование для выбора технических решений по изменению грузовых характеристик монтажных машин. Показана возможность изменения этих характеристик. Для расширения технтогических возможностей кранов предложены схемы использования дополнительных устройств. Приведены результаты разработки перспективных конструкций грузозахватных устройств для подъема, и перемещения штучных грузов с помощью гидроманищтторов, а также создания внутренних захватов для кантования, подъема и транспортировки рулонных материалов. Определены области рационального применения предлагаемых технических решений..Монография предназначена для студентов вузов, обучающихся по специальности 5В071300 - "Транспорт, транспортная техника и технологии", а также может быть полезна студентам строительных и других специальностей, магистрантам, научным и инженерно-техническим работникам.

The study is devoted to structure and mechanical properties of a diamond composite used for manufacturing of cutting tools applied in a wide range of technological fields. The sample tools were fabricated by cold-pressing technology followed by hot-pressing in vacuum of the 51Fe–32Cu–9Ni–8Sn matrix mixture with diamond bits, both in absence and presence of nano-VN additives. It was demonstrated that without VN addition, the diamond–matrix interface contained voids and discontinuities. Nanodispersed VN added to the matrix resulted in the formation of a more fine-grained structure consisting of solid solutions composed of iron, copper, nickel, vanadium and tin in different ratios and the formation of a tight diamond–matrix zone with no visible voids, discontinuities and other defects. Optimal concentrations of VN in the CDM matrix were found achieving the maximum values of nanohardness H = 7.8 GPa, elastic modulus E = 213 GPa, resistance to elastic deformation expressed by ratio H/E = 0.0366, plastic deformation resistance H3/E2 = 10.46 MPa, ultimate flexural strength Rbm = 1110 MPa, and compressive strength Rcm = 1410 MPa. As-prepared Fe–Cu–Ni–Sn–VN composites with enhanced physical and mechanical properties are suitable for cutting tools of increased durability and improved performance. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.