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Synthesis, spectroscopic properties, crystal structures, antioxidant activities and enzyme inhibition determination of Co(II) and Fe(II) complexes of Schiff base
No full textConsidering the importance of metal complexes in the development of medical science, two different Schiff base Fe(II) and Co(II) metal complex compounds were synthesized with Schiff base obtained through the condensation of 1-(4-aminophenyl)ethanone with 2-hydroxy-3-methoxybenzaldehyde. The reactions of the ligand with Co(II) and Fe(II) metal ions enabled six coordination compounds with octahedral geometries. The novel metal complexes were characterized by IR, elemental analyses, magnetic susceptibility, mass spectra, UV–Vis, thermogravimetry–differential thermal analysis (TGA–DTA) and X-ray diffraction analysis. The antioxidant properties of the new compounds were investigated using different in vitro assays. Moreover, enzyme inhibition of derivatives complexes against carbonic anhydrase I and II isoenzymes (CA I and II) and acetylcholinesterase (AChE) was evaluated. The best inhibitor complex for CA I and II isoenzymes was the Fe(II) complex with Ki values of 52.83 ± 11.52 and 63.34 ± 8.88, respectively. © 2019, Springer Nature B.V
Multi-criteria decision-making in the location selection for a solar PV power plant using AHP (vol 129, pg 218, 2018)
No full textWOS: 000509460000017
VEGETATIVE COMPATIBILITY GROUPS AND PATHOGENICITY OF VERTICILLIUM DAHLIAE ISOLATES FROM STRAWBERRY PLANTS IN ERZURUM AND ERZINCAN PROVINCES, TURKEY
No full textWOS: 000509426700053This study was conducted in order to investigate the vegetative compatibility groups (VCGs) and the pathogenicity of Verticillium dahliae isolates from strawberry plants in Erzurum and Erzincan provinces during 2008-2010. As a result of isolations, two hundred two V. dahliae isolates were isolated from strawberry plants. The vegetative compatibility groups of the isolates were determined using nitrate-nonutilizing (nit) mutants. A total of 881 mutants were produced from the isolates, and classified as nit1 (781 mutants) and nitM (100 mutants). As a result of complementation test with international tester isolates, 148 isolates were assigned to VCG2B, 32 isolates to VCG4B and 13 isolates to VCG2A, whereas 9 isolates were incompatible with tester isolates. Pathogenicity experiments were tested on strawberry (cv. Fern) by the root-tip method. It was identified that VCG2A isolates were more aggressive than VCG4B and VCG2B isolates. This is the first report of VCGs of V. dahliae isolates from strawberry plants in Turkey.Department of Scientific Research Project Management of Ataturk University [BAP-2010/52]This article was prepared from a part of the first author's PhD thesis and supported by Department of Scientific Research Project Management of Ataturk University (Project number is BAP-2010/52). Abstract of a part of this publication is presented at the 1st International Conference on Food Agriculture and Animal Sciences (ICOFAAS 2018) in Turkey
An ethnobotanical research in Sanliurfa central district and attached Villages (Turkey)
No full textWOS: 000504883300001The objective of present study is to identify the plants traditionally utilized by local communities, who reside at the rural areas attached to Central District of Sanliurfa located in Southeast Anatolia Region, for various purposes, and to reveal the significant of such use in terms of ethnobotany. The study conducted in this respect identified 137 taxa of 87 genera from 47 families (86 species, 34 sub-species, and 17 varieties), 21 of them are cultigens. 1 taxon is from Terfeziaceae of Ascomycota division of Fungi kingdom, while the others are from Gymnospermae and Angiospermae sub-division of Spermatophyte division from the Plantae kingdom. In general, local community utilizes taxa identified in field of study as follows: 56 taxa as food, 37 as medicinal purposes, 5 for belief, 5 for pests, 4 as household goods, 3 as seasoning, 3 as ornaments, 3 as cosmetics, 2 as beverages, 2 as knick-knack, 2 as fuel, 2 as building materials, 1 as dulling, 1 as canopy, 1 as aphrodisiac, 1 as clarifying, 1 as repellent, 1 as doddle, 1 as preventive and 1 as aroma. Moreover, 11 taxa are not utilized, but 7 of them are known by their local names and 4 with their harmful effects.Harran University Scientific Research CommitteeHarran University [13152]We hereby acknowledge Harran University Scientific Research Committee (Project No: 13152) for offering financial support and Hakki Sazak, Survey Technician, for drawing the map of the study area
Examination of different reading strategies with eye tracking measures in paragraph questions [Paragraf sorularında farklı okuma stratejilerinin göz izleme metrikleriyle incelenmesi]
No full textThis study aims at investigating the effects of two different test-taking strategies on reading achievement, dwell time, fixation counts and number of regressions on area of interests (AOIs) of the multiple choice reading comprehension questions with different type and difficulty levels. In this true experimental study, 28 subjects are randomly assigned into two groups. While subjects in stem first strategy (S-FS) group read the question stem first, subjects in paragraph first strategy group (P-FS) read paragraph first. Results of this study show that dwell time, fixation counts, and number of regressions on question stem AOIs in the S-FS group are significantly higher than the P-FS group. As a result, contrary to the common recommendations in practice, reading the question stem first provides no advantage in terms of reading achievement and dwell time as expected. Moreover, the S-FS significantly increases dwell time, fixation counts, and number of regressions on question stem AOIs. © 2020, Hacettepe University. All rights reserved
Chemical constituent and radical scavenging antioxidant activity of Anthemis kotschyana Boiss
No full textPubMed: 32028798Phenolic content and antioxidant activity of Anthemis kotschyana Boiss. var. discoidea (A. kotschyana) were reported in this study. The ethanol extract of Anthemis kotschyana (EEA) and the water extract of Anthemis kotschyana (WEA) were prepared and used for biochemical analyses. Radical scavenging antioxidant capacities of EEA and WEA were evaluated by DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging method. Another goal of the study was to evaluate the phenolic compositions of A. kotschyana by liquid chromatography and tandem mass spectrometry (LC-MS/MS). Rhamnetin (5.484 ± 0.020 ppm; µg/g extract) and quinic acid (2.251 ± 0.012 ppm; µg/g extract) were identified as major two compounds in the plant sample. This study will be a scientific base for further studies about A. kotschyana for plant biochemistry and plant-based pharmacological industry. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group
Self-referenced hydrogen nanosensor based on SPP resonator system
No full textThis paper presents a numerical study of a nanoscale hydrogen gas sensor based on a surface plasmon polariton resonator system. The system consists of two resonators, one with a silver-core and the other with a palladium-core, and a side-coupled access waveguide. In this study, an effective method for eliminating inhibitory detection parameters in hydrogen gas detection is proposed. With a sensitivity of 350 pm/% hydrogen, the proposed structure and the method should lead to future studies investigating more compact, cost-effective, practical and accurate hydrogen detection technology. © 2020 Elsevier B.V
Insecticidal effects of some essential oils against Tribolium confusum (du Val.) and Acanthoscelides obtectus (Say), (Coleoptera: Tenebrionidae and Bruchidae) adults
No full textIn this study, insecticidal effects of the essential oils obtained from plants Ocimum basilicum L., Rosmarinus officinalis L. and Artemisia dracunculus L. on confused flour beetle (Tribolium confusum du Val., 1863 (Coleoptera: Tenebrionidae)) and bean weevil (Acanthoscelides obtectus (Say), 1831 (Coleoptera: Bruchidae)) adults were tested in laboratory conditions. In this context, T. confusum and A. obtectus adults were exposed to essential oils at 10 and 20 µL/petri doses for 24, 48, 72 and 96 h. All of the essential oils used in the study caused mortalities at different rates in two application doses but end of the 96 h all mortality rates were obtained similar (O. basilicum 98.3%, R. officinalis 98.3%, A. dracunculus 93.3% against T. confusum adults; O. basilicum 100%, R. officinalis 100%, A. dracunculus 100% against A. obtectus adults). It was determined that the effects of essential oils on A. obtectus adults were greater than T. confusum adults. Especially when the dosage was 20 µL, the death rate increased up to over 95% after 96 h for all types. The mortality rates increased with increasing exposure period at the 48, 72 and 96 h. in all applications. The results of the study suggest that essential oils from O.basilicum and R.officinalis could have a potential as control agents against A. obtectus and T.confusum adults under storage conditions. © 2020, African Association of Insect Scientists
Analysis of macro nutrient related growth responses using multivariate adaptive regression splines
No full textStrawberry micropropagation is generally based on Murashige and Skoog mineral salts, and many cultivars grow well on this medium. However, the diverse species found in germplasm collections often do not thrive, which indicates a need to optimize the mineral nutrients. In this study, Multivariate Adaptive Regression Splines (MARS), was employed to predict shoot quality, multiplication, and leaf color responses of three strawberry species in response to the major tissue culture nutrients by generating functional associations. MARS is a non-parametric approach that can be used to deal with continuous and categorical data without requiring the strict distributional assumptions of the basic linear models. The MARS algorithm is capable of capturing non-linear patterns between the input and target variables. NH4NO3, CaCl2·2H2O, MgSO4·7H2O, KNO3 and KH2PO4 were tested in a range of 0.5 × to 3 × MS medium, within a computer-generated optimal design that consisted of 32 treatment combinations. The plant responses were affected by all of the major salts tested and the genotype factor. Multivariate Adaptive Regression Splines captured the significant factors and their interactions to predict optimal major salts suitable for all three strawberry species: 3300 mg L-1 NH4NO3, 862.4 mg L-1 CaCl2, 1110 mg L-1 MgSO4, 3439 mg L-1 KNO3, and 329.8 mg L-1 KH2PO4. This study identified the major nutrient needs of the three strawberry species and provides an alternative statistical technique for tissue culture data analyses. © 2020, Springer Nature B.V
The rate of Cu doped TiO2 interlayer effects on the electrical characteristics of Al/Cu:TiO2/n-Si (MOS) capacitors depend on frequency and voltage
No full textIn order to determine the surface states (Nss), series resistance (Rs), and (Cu:TiO2) interlayer effects on the electrical characteristics of the Al/Cu:TiO2/n-Si metal oxide semiconductor (MOS) capacitors, both capacitance (C) and conductance (G) values were measured for frequency ranges of 10 kHz–1 MHz and ±5 V voltage ranges. In addition, to know Cu doping concentration effect on the MOS capacitor, the Al/Cu:TiO2/n-Si was fabricated with various rates Cu:TiO2 interlayer (5, 10, 15%) grown on n-Si susbtrate by spin-coating. The increase in capacitance via decreasing frequencies was attributed to the existence of Nss and their relaxation time. The frequency dependent diffusion potential (Vd), doping of donor atoms (Nd), Fermi energy (EF), barrier height (?b) and depletion layer width (Wd) values were extracted from the linear part of reverse bias C- 2-V curves. While the value the Rs decreased with increasing frequency, the Nss values increased for the three MOS capacitors. The profiles of Nss and Rs depending on voltage were also plotted by Nicollian-Brews methods and using high-low frequency (CHF-CLF) capacitance, respectively. The mean values of Nss for three capacitors were found at about 1012 eV- 1cm- 2 as suitable electronic devices. The lower values of the Nss can be attributed to passivation effect of Cu:TiO2 interlayer. © 2020 Elsevier Lt