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Toplam kayıt 272, listelenen: 21-30
Investigation of the impact of COVID-19 on the tourism workforce
(Edward Elgar Publishing Ltd., 2021)
Tourism sector has been adversely affected by the global efforts to keep everyone safe and healthy during the COVID-19 pandemic. Tourism businesses were among the first impacted and is claimed to need a lengthy recovery. ...
Dehydrogenation of ammonia borane by dealloyed ruthenium catalysts
(Bellwether Publishing, Ltd., 2021)
In this work, ruthenium catalysts were obtained by alloying-dealloying approach and used in the dehydrogenation reaction of ammonia borane. Ruthenium and aluminum were sputtered simultaneously and aluminum was etched from ...
Some Identities of Harmonic and Hyperharmonic Fibonacci Numbers
(Gazi Univ, 2021)
This paper is concerned with the combinatorial identities of the harmonic and the hyperharmonic Fibonacci numbers. By using the symmetric algorithm, we get some identities which improve the usual results and generalize ...
The effects of seasonal heavy-metal pollution of Ladik Lake on pike fish (Esox lucius)
(Taylor and Francis Ltd., 2021)
Ladik Lake (Samsun, Turkey) is a natural landscape under the threat of pollution because of urban, agricultural and industrial activities. In this study, accumulation of heavy metals (Al, Ba, Cr, Cu, Fe, Mn, Pb and Zn) in ...
Experimental and statistical investigation of the machining performance of wave form end mills on AISI 316L stainless steel
(Gazi Univ, Fac Engineering Architecture, 2021)
Wave form end mills with variable rake and helix angles are new in the machining industry, and limited information is available on their machining performance. In this study, the machining performance of wave form end mills ...
The Effects of Neutrophil-Lymphocyte Ratio, Platelet-Lymphocyte Ratio and Prognostic Markers in Determining the Mortality in Patients Diagnosed With Pneumonia in Intensive Care
(Galenos Publ House, 2021)
Objective: In this study, we aimed to reveal the level of predicting mortality of the Neutrophil/Lymphocyte (NLR) and Platelet/Lymphocyte Ratios (TLR) calculated in patients hospitalized with the diagnosis of pneumonia in ...
A public health problem: vitamin D status in child health follow up
(Pamukkale University, 2021)
Purpose: Vitamin D is a hormone, synthesized in the skin under the direct sunlight. Deficiency of vitamin D is a significant global problem in children. It is necessary for well growing up and development. It acts as a ...
SOME RESULTS CONCERNED WITH HANKEL DETERMINANT FOR N (?) CLASS
(Korean Mathematical Soc, 2021)
In this paper, we give some results an upper bound of Hankel determinant of H2(1) for the classes of N (alpha). We get a sharp upper bound for H-2(1) = c(3)-c(2)(2) for N (alpha) by adding z(1), z(2), ... , z(n) zeros of ...
The Effect of Preoperative Oral Intake of Liquid Carbohydrate on Postoperative Stress Parameters in Patients Undergoing Laparoscopic Cholecystectomy: An Experimental Study
(Elsevier Science Inc, 2021)
Purpose: The aim of this study is to investigate the effects of preoperative oral intake of liquid carbohydrate on postoperative stress parameters (blood glucose, insulin resistance, cortisol, noradrenaline, and adrenaline ...
Class-driven content-based medical image retrieval using hash codes of deep features
(Elsevier Sci Ltd, 2021)
Medical imaging provides the convenience of physicians to analyze the disease by providing visual data of the body parts required for clinical research and treatment. Today, increasing medical images following technological ...