Yayıncı "Pergamon-Elsevier Science Ltd" WoS İndeksli Yayınlar Koleksiyonu için listeleme
Toplam kayıt 87, listelenen: 21-40
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Effect of the specimen length on ultrasonic P-wave velocity in some volcanic rocks and limestones
(Pergamon-Elsevier Science Ltd, 2015)Ultrasonic P-wave velocity (UPV) is commonly used in different fields such as civil, mining, geotechnical, and rock engineering. One of the significant parameters which affect the UPV of rock materials is likely to be the ... -
The effect of titanium (Ti) additive on radiation shielding efficiency of Al25Zn alloy
(Pergamon-Elsevier Science Ltd, 2020)In this study, gamma ray and neutron shielding properties of Al25Zn alloy samples prepared by induction melting technique with the composition of (75-x)Al-25Zn-xTi (x = 0, 0.01, 0.1 and 1 wt %) were investigated theoretically ... -
Effects of the center of linear heating position on natural convection and entropy generation in a linearly heated square cavity
(Pergamon-Elsevier Science Ltd, 2020)Entropy generation and heat transfer caused by the natural convection in a square cavity, which is linearly heated from one of the vertical walls and uniformly cooled from the other vertical wall, is studied numerically. ... -
The electrochemical and spectroelectrochemical properties of metal free and metallophthalocyanines containing triazole/piperazine units
(Pergamon-Elsevier Science Ltd, 2016)The synthesis and characterization of novel peripherally tetra [1,2,4]-triazole substituted metal-free phthalocyanine and its metal complexes (Zn(II), Ni(II), Pb(II), Cu(II) and Fe(II)) and the investigation of electrochemical ... -
Evaluation of gamma attenuation parameters and kerma coefficients of YBaCuO and BiPbSrCaCuO superconductors using EGS4 code
(Pergamon-Elsevier Science Ltd, 2020)The levels of the coefficients of the mass attenuation (mu/rho) for YBaCuO and BiPbSrCaCuO superconductors and their contents were determined theoretically, using EGS4 simulation code and the XCOM database, and experimentally ... -
Exergetic performance comparison of air and hydrogen gas flowing through the annular curved duct
(Pergamon-Elsevier Science Ltd, 2018)The main objective of this study is to parametrically compare the exergetic performance of air and hydrogen gas flow through the curved annular duct. For this purpose, it is assumed that, i) air and hydrogen are considered ... -
Exergetic sustainability improvement potentials of a hydrogen fuelled turbofan engine UAV by heating its fuel with exhaust gasses
(Pergamon-Elsevier Science Ltd, 2016)Exergetic sustainability parameters such as, exergy efficiency, waste exergy ratio, environmental effect factor and exergetic sustainability index were investigated for an UAV having a turbofan engine for the case its ... -
Exergetic sustainability indicators for a high pressure hydrogen production and storage system
(Pergamon-Elsevier Science Ltd, 2017)This study examines the exergetic sustainability effect of PEM electrolyzes (PEME) integrated high pressure hydrogen gas storage system whose capacity is 3 kg/h. For this purpose, the indicators, previously used in the ... -
Exergo-sustainability indicators of a turboprop aircraft for the phases of a flight
(Pergamon-Elsevier Science Ltd, 2013)One of the key challenges for sustainable aviation is to reduce global and local environmental impacts. the scope of this study is analysed and discussed in detail for better understanding of sustainability performances ... -
Exergoenvironmental and exergoeconomic analyses of a vertical type ground source heat pump integrated wall cooling system
(Pergamon-Elsevier Science Ltd, 2016)In this study, exergoenvironmental, and exergoeconomic analyses of wall cooling systems fed by a vertical type of ground source heat pump integrated wall cooling system for cooling were examined experimentally and theoretically ... -
Exergy, exergoenvironmental and exergoeconomic evaluation of a heat pump-integrated wall heating system
(Pergamon-Elsevier Science Ltd, 2016)In this study, a vertical ground source heat pump wall heating system belonging to the Yildiz Renewable Energy House on the Davutpasa Campus of Yildiz Technical University was experimentally and theoretically studied. the ... -
Experimental and theoretical studies on Cu(II) complex of N,N '-disalicylidene-2,3-diaminopyridine ligand reveal indirect evidence for DNA intercalation
(Pergamon-Elsevier Science Ltd, 2016)A potential DNA intercalating Cu(II) complex ([CuL]) of the N,N'-disalicylidene-2,3-diaminopyridine ligand (H2L; dianion =L2- has been synthesized and characterized. the photophysical and the DNA binding behaviors of the ... -
Experimental investigation of coaxial impinging air jets
(Pergamon-Elsevier Science Ltd, 2018)This study experimentally investigates hydrodynamical and thermal characteristics of coaxial confined impinging turbulent air jets. Various values of the dimensionless nozzle-to-plate distances and dimensionless flowrate ... -
Experimental investigation of flow boiling in single minichannels with low mass velocities
(Pergamon-Elsevier Science Ltd, 2018)Flow boiling characteristics in a single minichannel with the aspect ratio of 2 (1.8 mm width and 0.9 mm height) are studied experimentally. Experiments are conducted for different values of the wall heat flux (in the range ... -
Experimental investigation of heat transfer characteristics and wall pressure distribution of swirling coaxial confined impinging air jets
(Pergamon-Elsevier Science Ltd, 2018)In the present study, swirling coaxial confined impinging turbulent air jets issuing from a novel designed nozzle is studied experimentally. Heat transfer characteristics and pressure distribution on the impingement plate ... -
Genetic and environmental influences on problematic Internet use: a twin study
(Pergamon-Elsevier Science Ltd, 2014)Despite many studies on the prevalence and correlates of problematic Internet use (PIU), we know little about its etiological components. Our main aim is to find out to what extent PIU is influenced by genetic and environmental ... -
Histopathological and biochemical evaluation of the effect of Paeoniflorin on the periodontium during and after periodontitis formation in rats
(Pergamon-Elsevier Science Ltd, 2019)Objectives: Appraise the effect of systemic Paeoniflorin (Pae) application on the periodontium during and after induction of experimental periodontitis in the presence of ligature and after its removal. Design: Seventy ... -
How can the digital competences of pre-service teachers be developed? Examining a case study through the lens of DigComp and DigCompEdu
(Pergamon-Elsevier Science Ltd, 2020)In this study, a training program, which aimed to develop pre-service teachers' digital competences, was designed. After the training, pre-service teachers' opinions in terms of digital competence development, how they ... -
IGECVI-special issue-Energy and exergy modeling of advance energy systems
(Pergamon-Elsevier Science Ltd, 2012)Dear Colleagues, Energy and exergy are unifying concepts that extend all sciences, and are of fundamental importance in issues of climate change and environment, and use of energy resources. Exergy analysis is a powerful ... -
The impact of higher education on unemployed Turkish people's attitudes toward gender: A multilevel analysis
(Pergamon-Elsevier Science Ltd, 2019)This study investigated the effect of college on unemployed people's attitudes toward gender in Turkey. Gender, age, income, and the number of household members were also included in the model as well as college and gender ...