Güncel Gönderiler: Makale Koleksiyonu
Toplam kayıt 72, listelenen: 41-60
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Synthesis Of Brominated Quinolines
(Yildiz Technical Univ, 2015)this study, bromination reactions of 1,2,3,4-tetrahydroquinoline by molecular bromine and aromatization reactions of brominated tetrahydroquinolines were reinvestigated. Optimal reaction conditions were established for ... -
In vitro antiproliferative/cytotoxic activity of 2,3 '-biindole against various cancer cell lines
(Tubitak Scientific & Technical Research Council Turkey, 2015)2,3'-Biindole (2) was synthesized via bromination of indole (1) with molecular bromine and underwent simultaneous dimerization. Antiproliferative and cytotoxic activity of 2 was investigated in vitro on C6 (rat brain tumor), ... -
Effect of heat treatments on the microhardness and tensile strength of Al-0.25 wt.% Zr alloy
(Elsevier Science Sa, 2015)In the present work, the effect of heat treatments on the microhardness and tensile properties of the Al-0.25 Zr (wt.%) alloy have been investigated. The Al-0.25 Zr (wt.%) alloy was melted in a vacuum furnace, and the ... -
Synthesis of novel cyano quinoline derivatives
(Pergamon-Elsevier Science Ltd, 2015)6,8-Dibromo-1,2,3,4-tetrahydroquinoline (2) and 3,6,8-tribromoquinoline (3) were converted into the corresponding cyano derivatives via copper assisted nucleophilic substitution reactions. While bromination of 6-bromo-8- ... -
Effects Of Meaningful Learning On Conceptual Perceptions Related To "Force And Motion": An Experimental Study For Pre-Service Science Teachers
(Sci Methodical Ctr-Sci Educologica, 2014)The main purpose of science education is to enable students to connect concepts with daily life and establish relations between the concepts. Thus, many implementations related to constructivism have been carried out. The ... -
A study on preschoolers' conceptual perceptions of states of matter: a case study of Turkish students
(Education Assoc South Africa, 2014)The purpose of the present study is to identify preschoolers' conceptual perceptions of states of matter, this issue that they often come across in their daily and social life. The study was designed as a qualitative case ... -
Simple and convenient preparation of novel 6,8-disubstituted quinoline derivatives and their promising anticancer activities
(Scientific Technical Research Council Turkey-Tubitak, 2013)A short and easy route is described for 6,8-disubstituted derivatives of quinoline and 1,2,3,4-tetrahydroquinoline from 6,8-dibromoquinolines 2 and 7 by various substitution reactions. While copper-promoted substitution ... -
SEM and X-Ray Diffraction Studies on Microstructures in Cu-26.04%Zn-4.01%Al Alloy
(Polish Acad Sciences Inst Physics, 2013)Due to fact that Cu-based alloys are very sensitive to the thermal treatments, in scanning electron microscopy and X-ray diffraction observations, according to the different quenching techniques Cu-26.04%Zn-4.01%Al alloys ... -
(E)-3-[(2-Methyl-4-nitrophenyl)iminomethyl]-1-benzothiophene
(Wiley-Blackwell, 2012)In the title conpound, C16H12N2O2S, the 1-benzothiophene residue and the substituted benzene ring are oriented at a dihedral angle of 53.36 (6)degrees. The molecular conformation features a short C-H center dot center dot ... -
Effects of thermal treatments on mechanical properties of Cu-24.2%Mn alloy
(Natl Inst Optoelectronics, 2012)In this work, some physical and mechanical properties of Cu-24.2%Mn (wt %) alloy have been investigated by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and compression deformation test. Austenite phase has ... -
Aqua(di-2-pyridylamine-kappa 2 N 2,N 2')(pyridine-2,6-dicarboxylato-kappa 3 O 2,N,O 6)zinc monohydrate
(Wiley-Blackwell, 2011)In the title compound, [Zn(C7H3NO4)(C10H9N3)(H2O)]center dot H2O, the ZnII atom has a distorted octahedral coordination geometry. One of the water molecules is coordinated with the ZnII ion and this molecule forms an O-H...O ... -
Effects of aging on the microstructure of a Cu-Al-Ni-Mn shape memory alloy
(Springer, 2011)The influence of aging on the microstructure and mechanical properties of Cu-11.6wt%Al-3.9wt%Ni-2.5wt%Mn shape memory alloy (SMA) was studied by means of scanning electron microscopy (SEM), transmission electron microscopy ... -
The effects of austenite phase deformation on microstructure and magnetic properties in Fe-13.4% Mn-5.2% Mo alloy
(Springer, 2011)The effects of austenite phase deformation on martensitic transformations and magnetic properties in Fe-13.4% Mn-5.2% Mo have been investigated by scanning electron microscopy, transmission electron microscopy, and Mossbauer ... -
Effect of Mn content on the austenite-martensite phases and magnetic properties in Fe-Mn-Co alloys
(Elsevier Science Sa, 2011)The influence of the Mn content on the magnetic properties and microstructure of the Fe-Mn-Co alloys has been investigated by means of scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and ... -
Development of science laboratory entrepreneurship scale
(Ekip Buro Makineleri A., 2015)The concept of entrepreneurship is a relatively recent concept introduced into educational programs and educational literature and the current study was conducted to determine the entrepreneurship characteristics possessed ... -
Determination of anticancer and antibacterial activities of disubstituted tacrine derivatives
(2019)The present study describes the biological features of disubstituted tacrine derivatives using cell proliferation andcell cytotoxicity assays. The abilities of tacrine derivatives to inhibit microbial growth and to interact ... -
6.Sınıf Fen Bilgisi ve Fen ve Teknoloji Öğretim Programlarının Karşılaştırılmalı Olarak İncelenmesi: Öğretim Öncesi Görüşler
(2008)Türkiye’de modern fen öğretim programlarının geliştirilme çalışma-larının 1960’lı yıllarda başladığı görülmektedir. Günümüze kadar bir çok fen öğretim programının uygulamaları yapılmış ve 2005-2006 öğretim yılında 4. ve ... -
Structural Characterization of 6-Bromo-5-nitroquinoline-1-oxide: A Quantum Chemical Study and XRD Investigations
(2018)The chemical properties of recently synthesized 6-bromo-5-nitroquinoline-1-oxide under a mild reaction condition by regioselective nitration of 6-bromoquinoline-1-oxide at C5 on going our research were investigated as ... -
Yaşamdaki Matematiğe Yönelik 3B Sanal Öğrenme Ortamının (MATHLIFE) Uygulanması: Deneyimler ve Zorluklar
(2017)Son yıllarda kullanımı gittikçe yaygınlaşan 3 boyutlu (3B) sanal öğrenme ortamlarının öğrencilerin öğrenmesini kolaylaştırmada güçlü bir potansiyelinin olduğu bilinmektedir. Matematik gibi öğrenilmesinde ve öğretiminde ... -
Presence of Centaurea regia Boiss. subsp. regia (Subgen. Cynaroides (Boiss. ex Walp.) Dostál, Compositae) in Turkey
(2010)Centaurea regia subsp. regia (Subgen. Cynaroides) taksonu Handel-Mazetti tarafından, Diyarbakır - Cizre arasından not edilmiş, fakat toplanmamıştır. Bu nedenle Wagenitz, bu taksonu Türkiye florasında süpheli kayıt başlığı ...