Başlık için listeleme
Toplam kayıt 1022, listelenen: 875-894
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Spatio-temporal changes in surface water quality and sediment phosphorus content of a large reservoir in Turkey
(Elsevier, 2020)The Keban Dam Reservoir, located on the Euphrates River, is the second largest reservoir of Turkey. Water quality of this reservoir is of great importance because it is widely used for recreation, aquaculture production, ... -
Spatiotemporal variations, health risks, pollution status and possible sources of dissolved trace metal(loid)s in the Karasu River, Turkey
(Elsevier, 2021)The Karasu River is the main tributary of the Euphrates River, which is the longest river in Southwest Asia. Domestic and industrial wastewater discharges, agricultural practices and mining activities in the basin can cause ... -
St. John's Wort (Hyperıcum Perforatum L.) Flower Based Carbon/Graphene Quantum Dot Structure Productıon And Characterızatıon For Bıoımagıng And Drug Delıvery Systems
(2021-11-02)In this study, it was aimed to obtain carbon and graphene quantum dot structures from St. John's Wort (Hypericum perforatum L.) flowers, originating from the city of Hatay. Hypericum perforatum L. flower sample was subjected ... -
Stability regions in time delayed two-area LFC system enhanced by EVs
(TÜBİTAK / Türkiye Bilimsel ve Teknik Araştırma Kurumu / Scientific and Technical research Council of Turkey, 2022)With the extensive usage of open communication networks, time delays have become a great concern in load frequency control (LFC) systems since such inevitable large delays weaken the controller performance and even may ... -
Stationarity Test of Renewable Energy Consumption with Fractional Frequency Fourier Unit Root Test: Evidence from BRICS-T Countries
(Bahadır Fatih Yıldırım, 2021)Countries consume large amounts of coal, oil, and natural gas due to the energy structure dominated by fossil fuels worldwide. For this reason, the rate of renewable energies in countries or country groups in general is ... -
Stock simulation with stochastic models: An Application In Istanbul Stock Exchange
(Malatya Turgut Özal Üniversitesi, İşletme Ve Yönetim Bilimleri Fakültesi, 2020)Financial markets are the markets where price changes are experienced depending on the instant changes. That’s why, recent studies focus on constant time stochastic models to model stock prices. Geometric Brownian Motion ... -
Strateji Krizi Yener Mi?
(İktisadi Kalkınma ve Sosyal Araştırmalar Derneği, 2021)Ocak 2020 ayından itibaren dünyayı kasıp kavuran Covid-19 pandemisi ve ekonomik sonuçlarının göz önünde olduğu, havacılık sektöründe pek çok şirketin küçülmeye gittiği ya da iflas ettiği dönemde, düşük ücretli havayollarından ... -
Stratejik Liderlik Kavramı, Özellikleri, Yetkinlikleri ve Stratejik Liderlik Davranışının İşletmelere Sağladığı Katkılar
(Malatya Turgut Özal Üniversitesi, 2021)Günümüzde işletmeler etkili rekabetin olduğu, değişim ve gelişimin yaşandığı bir çevrede faaliyet göstermektedirler. Teknolojide, çalışanların istek ve ihtiyaçlarında ve hayatın diğer birçok alanında meydana gelen hızlı ... -
Stream inputs to lake Hazar (Eastern Anatolia-Turkey)
(Gheorghe Asachi Technical University of Iaşi, 2019)Lake Hazar is one of the largest and deepest lakes in the Eastern Anatolia Region of Turkey. It is an outstanding natural resource and famous for its blue, clear, deep and alkaline waters. However, a drastic decrease in ... -
Stress And Fluid Restriction Before Anesthesia İnduction, İnvestigation Of The Effects Of The Patient’s Clinic, Endocrine Responses, And The Level Of The Nesfatin-1
(2021-05-15)Background/Aim: Preoperative fasting, fluid restriction and stress trigger many hormonal responses, one of which is the newly described Nefsatin-1. It has important effects on energy metabolism and stress. In this study, ... -
Structural and magnetic characterisation of Co substituted Ni2MnSb Heusler alloy: effect of cobalt substitution on magnetism and Curie temperature
(Taylor and Francis Ltd., 2021)In this study, Ni2-xCo x MnSb full-Heusler alloys (1.00 ≤ x ≤ 1.75) were prepared by arc melting process, and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), and SQUID. The L21 crystal structure ... -
Structural and magnetic properties of Ni2-xCoxMnSb (x: 0.00, 0.25, 0.50 and 1.00) Heusler alloys: The relationship between Curie temperature and lattice parameter
(Elsevier, 2019)Ni2-xCoxMnSb Heusler alloys were fabricated by arc melting process. The endothermic/exothermic reactions with increasing temperature were determined by DTA analysis and it was found that the chancing Co concentration in ... -
Structural, spectroscopic, dielectric, and magnetic properties of Fe/Cu co-doped hydroxyapatites prepared by a wet-chemical method
(Elsevier, 2022)In this study, the effects of Cu and Fe additives on the structural, dielectric, magnetic, thermal and morphology of hydroxyapatite (HAp) samples were investigated and reported in detail for the first time. The prepared ... -
A study about excellent xanthine oxidase inhibitory effects of new pyridine salts
(Springer, 2021)A series of pyridine salts were synthesized containing vitamin B3 (niacin), isonicotinonitrile, and non-substituted pyridine fragment from reactions of 1,3-dibromopropane, 1,4-dibromobutane, and 4,4′-bis(chloromethyl)-1, ... -
A Study on Chen-like Inequalities for Half Lightlike Submanifolds of a Lorentzian Manifold Endowed with Semi-Symmetric Metric Connection
(Malatya Turgut Ozal University, 2020)In this paper, Chen-like inequalities of a half lightlike submanifolds of a real space form N(c) with constant sectional curvature c, equipped with semi-symmetric metric connection are established and some important ... -
A Study on Foods That Boost The Immune System During The Covid-19 Pandemic
(Malatya Turgut Ozal University, 2020)The coronavirus (COVID-19) has spread rapidly across the world and been declared a pandemic by the World Health Organization. One of the ways to combat COVID-19 and other infectious diseases is to boost the immune system. ... -
A study on Optical Applications of Silk Fibroin Biomaterial
(2020)Silk fibroin (SF) is a natural substitute used in biological medicine for its good biocompatibility and biodegradability. Compared to other easily degradable (biodegradable) materials, they exhibit excellent properties, ... -
A study on the investıgation of improvement in coal liquefaction product efficiency
(Eskişehir Teknik Üniversitesi, 2019)The aim of this study is to improve the yields of Malatya-Arguvan lignite liquefaction products (char, preasphaltene, asphaltene, oil-gas). For this purpose, the liquefaction experiments of coal which was firstly raw and ... -
A study on the optoelectronic parameters of 4-chloromethyl-7-hydroxy coumarin in various solvents and concentrations
(Türkiye Kimya Derneği, 2021)A coumarin derivative, namely 4-chloromethyl-7-hydroxy coumarin (CMEHC), was synthesized in order to test the concentration and solvent effect on its optical properties. The spectral characterization of this compound was ... -
A survival classification method for hepatocellular carcinoma patients with chaotic Darcy optimization method based feature selection
(Elsevier, 2020)Survey is one of the crucial data retrieval methods in the literature. However, surveys often contain missing data and redundant features. Therefore, missing feature completion and feature selection have been widely used ...