Yayınlar
Koleksiyondaki öğeler
- MakaleAçık Erişim2018Scopus SJRQ2Pollen morphology of Scaligeria DC. (Apiaceae) in Turkey
Baldemir, Ayse; Alan, Senol; Sahien, Aydan Acar; Paksoy, Mehmet Yavuz; Pinar, N. Munevver
In this study, the pollen morphology of all Scaligeria DC. species distributed in Turkey were studied with light and scanningelectron microscopy for the first time. The aim is to contribute to knowledge of the variation among seven Scaligeria species, which havetaxonomic problems, based on pollen morphological characteristics by population analysis. The pollen is radially symmetrical, isopolar,and tricolporate in all examined species. Pollen grains are prolate and subprolate with the polar axes ranging from 18.4 to 37 μm andthe equatorial axes from 9.8 to 30 μm. Their polar shapes are triangular, triangular to subcircular, circular to subcircular, or triangularto subtriangular. Several types of exine ornamentations have been observed on pollen by scanning electron microscopy. Numericalanalysis showed that pore structure, the ratio of P/E, and ornamentation in the polar and equatorial views are most valuable variablesfor separating the Scaligeria species. All S. lazica taxa were grouped together and S. capillifolia and S. tripartita were the external taxadue to cluster and PCA analysis.
AtıfOpenAlex13TR Dizin2
İncele - MakaleAçık Erişim2014On the exact solutions of high order wave equations of KdV type (I)
Bulut, Hasan; Pandir, Yusuf; Baskonus, Haci Mehmet
AtıfOpenAlex1İncele - MakaleYalnız künye2023Scopus SJRQ3IMPROVEMENT OF SPERM QUALITY OF THE DEPIK FISH, Rasbora tawarensis, AFTER CRYOPRESERVATION USING ANTIOXIDANT
Muchlisin, Zainal A.; Afriani, Dian; Eriani, Kartini; Hasri, Iwan; Nur, Firman M.; Maulida, Siti; Handayani, Luvi S.; Fadli, Nur; Kocabas, Filiz K.; Siti-Azizah, Moh N.
AtıfOpenAlex3
İncele - MakaleAçık Erişim2015Inverse Problem for the Quadratic Pencil of the Sturm-Liouville Equations
Panakhov, Etibar S.; Tas, Kezban; Sat, Murat
AtıfOpenAlex1İncele - MakaleAçık Erişim2021Scopus SJRQ1From subduction to strike slip-related volcanism: insights from Sr, Nd, and Pb isotopes and geochronology of lavas from Sivas-Malatya region, Central Eastern Anatolia
Di Giuseppe, Paolo; Agostini, Samuele; Di Vincenzo, Gianfranco; Manetti, Piero; Savasçin, Mehmet Yilmaz; Conticelli, Sandro
AtıfOpenAlex16İncele - BildiriYalnız künye2015An FPGA Based Power Quality Monitoring System
Yildirim, Ozal; Eristi, Belkis; Eristi, Huseyin; Ünal, Sencer; Erol, Yavuz; Demir, Yakup
In this study, a new FPGA based monitoring system has been developed for monitoring the power quality. Designed system performs the calculations of power quality parameters on real-time voltages and currents datas that are obtained from the network. FPGA devices that have recently become more popular in digital signal processing field is used in the structure of monitoring system. Designed power quality monitoring system has been established on electrical distribution panels of Tunceli University Vocational Schools. When the obtained test results are evaluated, it has been observed that the proposed power quality monitoring system is successful.
AtıfWoS1İncele - MakaleYalnız künye2015Scopus SJRQ2Survey of wild food plants for human consumption in Elazig (Turkey)
Polat, Ridvan; Cakilcioglu, Ugur; Ulusan, Musa Denizhan; Paksoy, Mehmet Yavuz
This study aims to record accumulation of knowledge on plants which are used as food by local people of Elazig that has a rich culture and a very natural environment. Field study was carried out over a period of approximately two years (2010-2011). During this period, 92 vascular plant specimens were collected. The plants were pressed in the field and prepared for identification. A total of 62 food plants belonging to 28 families were identified in the region. There is no detailed information in the literature with regard to the use of brevipes for human nutrition. It is certained that wild plants being used for nutritional purposes by human beings are also used for medicinal purposes. Highlighting the importance of flora and ethnobotanical inventory studies in terms of the protection and use of plant sources, what is required is the cultivation of endangered plant species, establishment of seedbanks for these plants, recording of their natural habitat as well as conducting studies in order to raise public awareness.
AtıfWoS57İncele - MakaleYalnız künye2015Scopus SJRQ2Survey of wild food plants for human consumption in Gecitli (Hakkari, Turkey)
Kaval, Idris; Behçet, Lutfi; Çakilcioglu, Ugur
This study aims to record accumulation of knowledge on plants which are used as food by native people of Gecitli (Hakkari, Turkey) that has a rich culture and a very natural environment. In addition, the medical uses of these plants were compiled from the literature. Study area was located on the East of Anatolian diagonal, in the Eastern Anatolia region. Field study was carried out over a period of approximately two years (2008-2010). During this period, 84 vascular plant taxa were collected. The plants were pressed in the field and prepared for identification. A total of 84 food plants belonging to 30 families were identified in the region. In the study being conducted, use of wild plants as food points out interest of people in Gecitli in wild plants. The fact that a large proportion of edible plants are also being used for medicinal purposes indicates that the use of wild plants has a high potential in the region. The present study shows that further ethnobotanical investigations are worthy to be carried out in Turkey, where most of knowledge on popular food plants are still to discover. In Turkey, the number of ethnobotanic studies is ever-increasing. However, traditional uses of many wild plants have not been recorded yet. In terms of food safety, the adverse effects that may arise due to the use of wild plants,without sufficient knowledge must be reported to the native people.
AtıfWoS45İncele - MakaleAçık Erişim2015Scopus SJRQ2On the numerical solutions of some fractional ordinary differential equations by fractional Adams-Bashforth-Moulton method
Baskonus, Haci Mehmet; Bulut, Hasan
In this paper, we apply the Fractional Adams-Bashforth-Moulton Method for obtaining the numerical solutions of some linear and nonlinear fractional ordinary differential equations. Then, we construct a table including numerical results for both fractional differential equations. Then, we draw two dimensional surfaces of numerical solutions and analytical solutions by considering the suitable values of parameters. Finally, we use the L-2 nodal norm and L-infinity maximum nodal norm to evaluate the accuracy of method used in this paper.
AtıfWoS129OpenAlex164İncele - MakaleAçık Erişim2014The investigation of some bioactive compounds and antioxidant properties of hawthorn (Crataegus monogyna subsp. monogyna Jacq)
Keser, Serhat; Celik, Sait; Turkoglu, Semra; Yilmaz, Okkes; Turkoglu, Ismail
The antioxidant and pharmacological effects of hawthorn have mainly been attributed to the polyphenolic contents. The aim of this research is to determine some bioactive compounds and antioxidant properties of hawthorn aqueous and ethanol extracts of leaves, flowers, and ripened fruits. Materials and Methods: For this purpose, antioxidant activities of extracts were assessed on DPPH center dot, ABTS center dot +, superoxide scavenging, reducing power and ferrous metal chelating activity assays and phenolic content of extracts was determined by Folin-Cioacalteu's reagent. Results: The flavonoids including rutin, apigenin, myricetin, quercetin, naringenin and kaempferol, were identified by high- performance liquid chromatography in the hawthorn extract. Conclusion: It was observed the aqueous and ethanol extracts of Crataegus monogyna subsp. monogyna fruits showed the highest activity in reducing power and metal chelating activity assays. In addition, it was determined that the aqueous flower extract showed higher flavonoid content than aqueous leaves extract. The antioxidant and pharmacological effects of hawthorn have mainly been attributed to the polyphenolic contents.
AtıfWoS47OpenAlex58İncele - MakaleAçık Erişim2015Scopus SJRQ2Synthesis, Structural Characterization and Biological Activity of Novel Cyclohexane-1,3-dione Ligands and Their Metal Complexes
Turan, Nevin; Körkoca, Hanifi; Adigüzel, Ragip; Çolak, Naki; Buldurun, Kenan
Some new Zn(II) and Cu(II) complexes [Cu(L-1)(OAc)(2)].H2O, [Cu(L-1)(NO3)H2O].NO3.3.5H(2)O, [Zn(L-1)(NO3)(2)].4.5H(2)O, [Zn(L-1)(OAc)(2)(H2O)(2)].3H(2)O, [Cu-2(L-2)(OAc)(4)].2H(2)O.2DMF, [Cu(L-2)(2)].2NO(3).1.5DMF.H2O, [Zn(L-2)(2)(NO3)(2)].DMF and [Zn-2(L-2)(OAc)(4)(H2O)(4)].5H(2)O; L-1 = 2-[2-(2-methoxyphenyl)hydrazono]cyclohexane-1,3-dione and L-2 = 2-[2-(3-nitrophenyl)hydrazono]cyclohexane-1,3-dione were synthesized and characterized by IR, H-1-NMR,C-13-NMR and ultraviolet (UV-Vis.) spectroscopy, elemental analysis, magnetic susceptibility, mass spectrometry and thermogravimetry-differential thermal analysis (TGA-DTA). The synthesized ligands and their complexes were tested for antibacterial activity against Escherichia coli ATCC 25922, Enterococcus faecalis ATCC 29212, Staphylococcus aureus ATCC 25923, and Salmonella typhimurium CCM 583. Some of complexes showed medium-level antibacterial activity against the test bacteria compared with ampicillin.
AtıfWoS20OpenAlex18İncele - MakaleYayıncıda açık erişim2015ON SOME NEW ANALYTICAL SOLUTIONS FOR THE (2+1)-DIMENSIONAL BURGERS EQUATION AND THE SPECIAL TYPE OF DODD-BULLOUGH-MIKHAILOV EQUATION
Baskonus, Haci Mehmet; Bulut, Hasan
Some new travelling wave transform methods are very important for obtaining analytical solutions of special type of nonlinear partial differential equations (NLPDEs). Some of these solutions of NLPDEs may be in the different forms such as rational function solutions, trigonometric function solutions, hyperbolic function solutions, exponential function solutions and Jacobi elliptic function solutions. These forms tell us the various properties of the NLPDEs from scientifical applications to engineering. In this research, we have studied to obtain the analytical solution of the nonlinear (2+1)-dimensional Burgers equation which is named from Johannes Martinus Burgers and the nonlinear special type of the Dodd-Bullough-Mikhailov equation introduced to the literature by Roger Dodd, Robin Bullough, and Alexander Mikhailov.
AtıfWoS20İncele - MakaleYalnız künye2016Scopus SJRQ3Essential Oil Composition of Scaligeria napiformis Native to Turkey
Baldemir, A.; Demirci, B.; Ilgun, S.; Kosar, M.; Paksoy, M. Y.
AtıfWoS3OpenAlex2İncele - MakaleYalnız künye2012Scopus SJRQ2Cyano-complexes and salts with tetracyanonickellateII and N,N-bis(2-hydroxyethyl)-ethylenediamine: synthesis, IR spectra, magnetic properties, thermal analyses, and crystal structures
Karadag, A.; Korkmaz, S. Aslan; Andaç, O.; Yerli, Y.; Topcu, Y.
Four cyano complexes, [Ni(N-bishydeten)Ni(CN)(4)](n) (c1), [Cu(N-bishydeten)(2)][Ni(CN)(4)] (c2), [Zn-2(N-bishydeten)(2)Ni(CN)(4)](n) (c3), and [Cd(N-bishydeten)(2)][Ni(CN)(4)] (c4), have been synthesized and characterized by FT-IR, elemental, and thermal analyses. The structures of c2 and c4 were determined by single-crystal X-ray diffraction studies; both structures contain isolated cations and anions. The c2 consists of [Cu(N-bishydeten)(2)](2+) with octahedrally coordinated Cu-II and diamagnetic [Ni(CN)(4)](2-), but c4 consists of [Cd(N-bishydeten)(2)](2+), in which Cd-II is eight coordinate with two tetradentate N-bishydeten and diamagnetic [Ni(CN)(4)](2-). The value of the shape measure S (degrees) indicates that the coordination geometry around Cd-II lies along D-2d [dodecahedron; (dd)], C-2v [bicapped trigonal prism; (btp)], and D-4d [square antiprism; (sap)] but close to D-2d and D-4d. Variable temperature magnetic susceptibility measurements of c1 and c2 show the presence of little antiferromagnetic interaction below 20 K. Thermal analyses reveal that first neutral N-bishydeten and then cyano ligands were liberated from the complexes.
AtıfWoS19OpenAlex16İncele - MakaleYalnız künye2016Scopus SJRQ1Survey of wild food plants for human consumption in villages of Catak (Van-Turkey)
Mükemre, Muzaffer; Behçet, Lutfi; Çakilcioglu, Ugur
This study aims to record accumulation of knowledge on plants which are used as food by native people of Catak (Van, Turkey) that has a rich culture and a very natural environment. In addition, the medical uses of these plants were compiled from the literature. Study area was located on the East of Anatolian diagonal, in the Eastern Anatolia Region. Field study was carried out over a period of approximately two years (2010-2012). During this period, 82 vascular plant taxa were collected. The plants were pressed in the field and prepared for identification. A total of 82 food plants belonging to 28 families were identified in the region. In the study being conducted, use of wild plants as food points out interest of people in Catak in wild plants. The fact that a large proportion of edible plants are also being used for medicinal purposes indicates that the use of wild plants has a high potential in the region. The present study shows that further ethnobotanical investigations are worthy to be carried out in Turkey, where most of knowledge on popular food plants are still to discover. In Turkey, the number of ethnobotanic studies is ever-increasing. However, traditional uses of many wild plants have not been recorded yet. In terms of food safety, the adverse effects that may arise due to the use of wild plants without sufficient knowledge must be reported to the native people.
AtıfWoS35İncele - MakaleAçık Erişim2013Scopus SJRQ1Effect of cooking procedures of kiymali pide, a traditional Turkish fast-food, on destruction of Escherichia coli O157:H7
Ilhak, Osman Irfan; Dikici, Abdullah; Can, Ozlem Pelin; Seker, Pinar; Öksüztepe, Gulsum; Çalicioglu, Mehmet
The objective of the present study was to obtain data about cooking time and temperature of kiymali pide in the restaurants and to investigate thermal inactivation of E. coli O157:H7 during experimental kiymali pide making. A field study was conducted in randomly selected 23 of 87 pide restaurants. Processing parameters including oven temperature, cooking period and post-cooking temperature were determined. Kiymali pide samples were prepared using ground beef filling experimentally inoculated with E. coli O157:H7 (7.6 log(10) CFU/g). Pide samples were cooked at a conventional oven at 180 degrees C for 180, 240, 270, 300 and 330 s. Results of the current study suggest that cooking kiymali pide at 180 degrees C for at least 330 s (5.5 min) may provide sufficient food safety assurance (>= 6 log(10) CFU/g) for E. coli O157:H7. (C) 2013 Elsevier Ltd. All rights reserved.
AtıfOpenAlex3İncele - MakaleYalnız künye2017Scopus SJRQ3&ITHYPERICUM EKERII&IT (HYPERICACEAE), A NEW SPECIES FROM TURKEY
Babacan, Ebru Yuce; Aytaç, Zeki; Pinar, Munevver
Hypericum ekerii Yuce & Aytac sp. nov. (Hypericaceae) is described and illustrated from Duzgun Baba Mountain in Eastern Anatolia, Turkey. The new taxon grows on volcanic rocks in Tunceli Province. It is closely related to H. capitatum Choisy s.l. an Irano-Turanian element of Anatolia. Diagnostic morphological characters were discussed. The pollen characters of threetaxa were examined by scanning electron microscopy (SEM).
AtıfWoS20İncele - Derleme MakaleYalnız künye2016Scopus SJRQ1A state of the art literature review of VIKOR and its fuzzy extensions on applications
Gul, Muhammet; Celik, Erkan; Aydin, Nezir; Gumus, Alev Taskin; Guneri, Ali Fuat
Multi criteria decision making (MCDM) is one of the research areas of operations research and management science which has widely studied by researchers and practitioners. It finds a compromise solution for evaluating and ranking alternatives from the best to the worst under conflicting criteria with respect to decision maker(s) preferences. In a compromise approach, the VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR; that means multi-criteria optimization and compromise solution) continues to be applied satisfactorily across different application areas. This paper conducts a state-of-the-art literature review to categorize, analyze and interpret the current research on VIKOR applications. It also discusses the extensions of VIKOR applied in fuzzy environments. A total of 343 papers are classified into 13 different application areas and a number of sub-application areas. Furthermore, all papers are also categorized with respect to publication year, published journal, country of origin, application type (real case study vs empirical study), and version of fuzzy sets used. This comprehensive literature review provides an insight for researchers and practitioners on VIKOR applications in terms of showing current state and potential areas for future attempts to be focused in the future. (C) 2016 Elsevier B.V. All rights reserved.
AtıfWoS252OpenAlex320İncele - MakaleYalnız künye2012Scopus SJRQ2INVESTIGATION OF COPPER CEMENTATION KINETICS BY ROTATING ALUMINUM DISC FROM THE LEACH SOLUTIONS CONTAINING COPPER IONS
Ekmekyapar, Ahmet; Tanaydin, Mehmet; Demirkiran, Nizamettin
Recovery of metallic copper from the leach solution containing copper (II) ions by cementation process using aluminum disc has been examined. Solutions obtained from the leaching of malachite in aqueous acetic acid solutions were used in the study. It was determined that the cementation rate increased with increasing solution concentration, temperature and rotating speed, and decreasing solution pH. The reaction rate fits to the first order pseudo homogeneous reaction model and is controlled by diffusion. The activation energy of this process was calculated to be 32.6 kJ/mol.
AtıfWoS27İncele - MakaleYalnız künye2013The Relationship Between the Current Account Balance and Economic Growth in Developing Countries: Panel Data Analysis
Songur, Mehmet; Yaman, Demet
This study investigates the short term causality relations between current account balance and economic growth in developing countries. For this purpose, in contrast to other studies, this study examines the causality relations of 10 developing countries with Pedroni Panel Cointegration Analysis (1999) and Panel Vector Error Correction Models (Panel VECM) for the data period of 1981-2010. The results of analysis show that between there has been long-term cointegration relation the series in examined countrie, and there has been positive causality relation from current account balance to economic growth and negative causality relation from economic growth to current account balance in long-term.
AtıfWoS1İncele
