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  • Study of Helium Swelling in Nitride Ceramics at Different Irradiation Temperatures 
    Dukenbayev, Kanat; Zdorovets, Maxim; Kozlovskiy, Artem (Nazarbayev University School of Engineering and Digital Sciences, 2019-08-01)
    This paper presents the results of a systematic study of helium swelling and the subsequent process of degradation of the near-surface layer of aluminum-based nitride ceramics. The samples were irradiated with 40 keV He2+ ...
  • Study of Luminescene in Noble Gases and Their Binary Mixtures Excited by the Products of 6Li(n,α)T Nuclear Reaction 
    Samarkhanov, Kuanysh; Batyrbekov, Erlan; Khasenov, Mendykhan; Barsukov, Nikolay; Gordienko, Yuriy; Ponkratov, Yuriy; Kulsartov, Тimur; Zaurbekova, Zhanna; Tulubayev, Yevgeniy; Bochkov, Vadim (The 6th International Conference on Nanomaterials and Advanced Energy Storage Systems. Institute of Batteries LLP, Nazarbayev University, and PI “National Laboratory Astana”., 2018-08-08)
    Direct conversion of nuclear particles’ energy into optical radiation opens up new opportunities in obtaining a large amount of light energy, including its most perfect form - coherent light [1-2]. Moreover, optical radiation ...
  • Study of optical properties in ZNO single crystals 
    Bhowmick, M.; Ullrich, B. (Nazarbayev University, 2013)
    We employed ZnO single crystals obtained commercially. The crystals are 99.99% pure, and fit for measurements of optical properties. Among the equipments, UV-VIS Spectrometer from PerkinElmer for TR% and RE% were used, and ...
  • Study of Peeling of Single Crystal Silicon by Intense Pulsed Ion Beam 
    Yu, Xiao; Shen, Jie; Zhang, Jie; Zhong, Haowen; Cui, Xiaojun; Liang, Guoying; Yan, Sha; Zhang, Gaolong; Zhang, Xiaofu; Le, Xiaoyun (21st International Symposium on Heavy Ion Inertial Fusion. Autonomous Organization of Education “Nazarbayev University”, 2016-07-18)
    The surface peeling process induced by intense pulsed ion beam (IPIB) irradiation was studied. Single crystal silicon specimens were treated by IPIB with accelerating voltage of 350 kV current density of 130 A/cm2. It ...
  • The study of phenolic compounds of the berries of three species of plants of the genus vaccin-ium, growing in the khanty-mansi autonomous area 
    Белова, Екатерина; Тритэк, Владислав; Шульгау, Зарина; Гуляев, Александр; Кривых, Елена; Коваленко, Людмила; Дренин, Алексей; Ботиров, Эркин (Алтайский государственный университет, 2020)
    Впервые проведено исследование химического состава полифенольных соединений плодов клюквы (Vaccinium oxycoccus L.), черники (Vaccinium myrtillus L.) и брусники (Vaccinium vitis-idaea L.), произрастающих на территории Сургутского ...
  • Study of processes of nuclear reaction energy conversion into energy of optical radiation 
    Gordienko, Yu.N.; Batyrbekov, E.G.; Khasenov, M.U.; Zaurbekova, Zh.A.; Ponkratov, Yu.V.; Kulsartov, T.V.; Barsukov, N.I.; Tulubayev, Ye.Yu.; Mukanova, A.O. (Materials Today: Proceedings, 2017-01-01)
    Abstract This paper presents the preliminary results of the reactor experiments to study the spectral-luminescent properties of gaseous mixtures (based on He, Ne and Kr noble gases). The investigated gaseous mixtures were ...
  • Study of the A+13C interaction at heavy ION acceleration DC-60 
    Mynbayev, N. A.; Goldberg, V.Z.; Nurmukhanbetova, A.K.; Rogachev, G.V.; Golovkov, M.S.; Dzubin, V.; Zdoroves, M.V.; Koloberdin, M.; Ivanov, I. (Nazarbayev University, 2013)
    In astrophysics, nuclear reactions play a great role in understanding the formation of our universe.The reaction 13C(α,n)16O is considered to be the main source of neutrons for the s process at low temperatures in low mass ...
  • STUDY OF THE ELECTRON–ATOM COLLISIONS IN DENSE SEMICLASSICAL PLASMA OF NOBLE GASES 
    Dzhumagulova, Karlygash N.; Shalenov, Erik O.; Tashkenbayev, Yerkhan A.; Ramazanov, Tlekkabyl S. (Journal of Plasma Physics, 2022)
    We present the effective optical potential of the interaction of an electron with an atom in dense semiclassical plasma of noble gases. This potential takes into account the collective screening effect and the quantum ...
  • Study of the intense pulsed electron beam energy spectrum from BIPPAB-450 
    Shen, Jie; Li, Dongyu; Yu, Xiao; Zhang, Jie; Zhong, Haowen; Liang, Guoying; Cui, Xiaojun; Qu, Miao; Yan, Sha; Zhang, Xiaofu; Zhang, Gaolong; Le, Xiaoyun (21st International Symposium on Heavy Ion Inertial Fusion. Autonomous Organization of Education “Nazarbayev University”, 2016-07-18)
    Intense pulsed particle beams have been widely used and studied as an effective method for material surface modification in the past several decades. Beihang Intense Pulsed PArticle Beams 450 accelerator (BIPPAB-450) ...
  • Study of the lithium-ion battery at low temperatures 
    Mashekova, Aiym; Nurpeissova, Arailym; Bakenov, Zhumabay; Mukanova, Aliya (The 8th International Conference on Nanomaterials and Advanced Energy Storage Systems; Nazarbayev University; National Laboratory Astana; Institute of Batteries, 2020-08)
    Nowadays, LIBs are one of the most demanded power sources due to their portability, high power and energy density. The performance of LIBs depends on ambient temperature, especially, at low temperatures. According to [1] ...
  • A study of the performance of the LSWA CO2 EOR technique on improvement of oil recovery in sandstones 
    Pourafshary, Peyman; Al-Abria, H; Mosavat, Nader; Al Hadhrami, H (ELSEVIER, 2018-07-05)
    Low salinity water is an emerging enhanced oil recovery (EOR) method that causes wettability alteration towards a favorable state to reduce residual oil saturation, while water alternating gas (WAG) is a proven EOR process ...
  • Study of the resonance α+13C interaction at low energies: Optimization of parameters of the beam shape 
    Yesenov, M.; Beznosko, Dmitriy; Duspayev, A.; Iakovlev, A. (International Conference on New Photo-detectors, 2015)
    About half of all elements heavier than iron are produced in a stellar environment through the s process, which involves a series of subsequent neutron captures and α decays. The reaction 13C(α,n)16O is considered to be ...
  • Study of the transient temperature profiles induced by changes of the welding parameters during aluminium two plate arc butt-welding 
    Urthaler, Yetzirah; Viggiani, Pedro; Payares, Carolina; Rojas-Solorzano, L. (Universidad Simón Bolívar Departamento de Mecánica (*) Departamento de Conversión de Energía, 2001)
    The numerical study and calculation of transient temperatures developing during the arc-welding process of 6063 T5 aluminum plates is presented. The mathematical model is based on the differential energy conservation ...
  • Study of the tumorigenicity of human adipose mesenchymal stem cells 
    Zauatbayeva, G.; Akhmadeyeva, Zh.; Zhylkibayev, A. (National Laboratory Astana, Nazarbayev University, 2017-09-15)
  • Study on Ablation Products of Zinc by Intense Pulsed Ion Beam Irradiation 
    Zhang, Jie; Zhong, Haowen; Ye, Zhiao; Shen, Jie; Yu, Xiao; Liang, Guoying; Cui, Xiaojun; Zhang, Xiaofu; Zhang, Gaolong; Yan, Sha; Le, Xiaoyun (21st International Symposium on Heavy Ion Inertial Fusion. Autonomous Organization of Education “Nazarbayev University”, 2016-07-18)
    As a kind of flash heat source, intense pulse ion beam can be used for material surface modification. The ablation effect has important influence on interaction between IPIB and material. Therefore, the understanding ...
  • A STUDY ON THE EFFECT OF MULTIPLE WELL SHUT-INS ON SAND PRODUCTION 
    Kozhagulova, Ashirgul (Nazarbayev University School of Engineering and Digital Sciences, 2021-02-02)
    Sand production from oil-producing wells is a severe problem in the petroleum industry, mainly associated with weak and ultra-weak unconsolidated shallow formations and is an undesirable process of producing sand along ...
  • Study the effect of gene polymorphism contribution of statin biotransformation and lipid metabolism for parameters of statin efficacy. Recruiting 
    Kozhakhmetov, S.S.; Kushugulova, A.R.; Kakimova, A.B.; Saduakhassova, S.A.; Urasova, M.S.; Khassenbekova, Zh.R.; Kozhakhmetova, S.S.; Kazhybayev, A.K.; Urazbayeva, G.S.; Tuleutayeva, G.K.; Ongarbayeva, A.E.; Beysembayeva, S.Ch.; Nurgozhin, T.S.; Zhumadilov, Zh. (National Laboratory Astana, Nazarbayev University 2016, 2016-05-11)
    Rosuvastatin is high-performance hydroxymethylglutaryl coenzyme A (HMG-CoA) reductase, which commonly used in the treatment of hyperlipidemia. It significantly reduces levels of LDL, which accompanied by a moderate increase ...
  • SUBELLIPTIC GEOMETRIC HARDY TYPE INEQUALITIES ON HALF‑SPACES AND CONVEX DOMAINS 
    Ruzhansky, Michael; Sabitbek, Bolys; Suragan, Durvudkhan (Duke University Press, 2020-04-02)
    In this paper we present L2 and Lp versions of the geometric Hardy inequalities in half-spaces and convex domains on stratifed (Lie) groups. As a consequence, we obtain the geometric uncertainty principles. We give ...
  • SUBJECT-INDEPENDENT BRAIN–COMPUTER INTERFACES BASED ON DEEP CONVOLUTIONAL NEURAL NETWORKS 
    Kwon, O-Yeon; Lee, Min-Ho; Guan, Cuntai; Lee, Seong-Whan (IEEE Transactions on Neural Networks and Learning Systems, 2020-10)
    For a brain-computer interface (BCI) system, a calibration procedure is required for each individual user before he/she can use the BCI. This procedure requires approximately 20-30 min to collect enough data to build a ...
  • SUBLINEAR AND SUBQUADRATIC ALGORITHMS FOR SVMS 
    Omarova, Gauhar (Nazarbayev University School of Engineering and Digital Sciences, 2022-05)
    Support Vector Machine (SVM) is an important supervised machine learning algorithm used for regression and classification tasks. The core idea behind this algorithm is to create a hyperplane between data points of two ...