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Toplam kayıt 37, listelenen: 21-30
The effect of collector parameters on nanofiber yarns produced by electro yarn spinning machine with conical collector
(Taylor & Francis Ltd, 2021)
In this work, electrospun yarns were produced by a nanofiber yarn spinning machine with a conical collector. In the first part, two different polymers (PAN and PVDF-HFP) were used in nanofiber yarn spinning with two different ...
Evaluation of students' scientific process skills through reflective worksheets in the inquiry-based learning environments
(Routledge Journals, Taylor & Francis Ltd, 2020)
This study aimed to evaluate how 7th-grade students' scientific process skills changed in the inquiry-based learning environment through reflective worksheets. For this purpose, four inquiry-based activities related to ...
On the global asymptotic stability of a system of difference equations with quadratic terms
(Springer Heidelberg, 2021)
In this paper, we study the global asymptotic stability of following system of difference equations with quadratic terms: x(n+1) = A + B y(n)/y(n-1)(2), y(n+1) = A + B x(n)/x(n-1)(2) where A and B are positive numbers and ...
QUALITATIVE BEHAVIOURS OF A SYSTEM OF NONLINEAR DIFFERENCE EQUATIONS
(Editura Bibliotheca-Bibliotheca Publ House, 2021)
The paper aims to study the dynamics of a system of nonlinear difference equations x(n+1) = x(n-1)y(n) + A, y(n+1) = y(n-1)x(n) + A where is real number. We especially investigate the stability of equilibrium points, ...
Global dynamics of a higher order difference equation with a quadratic term
(Springer Heidelberg, 2021)
In this paper, we investigate the dynamics of the following higher order difference equation x(n+1) = A + B x(n)/x(n-m)(2) with A, B and initial conditions are positive numbers, and m is an element of {2, 3, ...}. Especially ...
Disaster and emergency preparedness in Istanbul museums
(Routledge Journals, Taylor & Francis Ltd, 2021)
Istanbul is a high-risk city in terms of disasters, as well as having museums hosting many cultural heritage artifacts. The purpose of this study is to analyze the preparation level of museums in Istanbul for disaster and ...
Analysis of polyacrylonitrile nanofiber yarn formation in electrospinning by using a conical collector and two oppositely charged nozzles
(Taylor & Francis Ltd, 2021)
Nanofiber production by electrospinning has become a common production method as it is an easy and flexible system producing nanofibrous webs. However, direct spinning of nanofibers into a yarn would lead to conversion of ...
Impact of Dehumidification Devices on Production Efficiency in Plastic Injection
(2021)
One of the many methods used in the production of plastic materials is plastic injection method.The plastic injection method needs equipment difficult to choose, and it is also costly. Manynegativities could be experienced ...
Alendronate-functionalized poly(amido amine) cryogels of high-toughness for biomedical applications
(Elsevier Sci Ltd, 2020)
Novel bisphosphonic acid-functionalized poly(amido amine) (PAA) macromers were synthesized through aza-Michael addition of sodium alendronate (ALE) and 5-amino-1-pentanol (AP) to N,N'-methylene bisacrylamide at two different ...
Nonlinear waves in an anti-Hermitian lattice with cubic nonlinearity
(Elsevier, 2020)
In an anti-Hermitian linear system, all energy eigenvalues are purely imaginary and the corresponding eigenvectors are orthogonal. This implies that no stationary state is available in such systems. We consider an ...