Deli I.,Kilis Aralik University |
Caman N.,Gaziosmanpaşa University
Applied Soft Computing Journal | Year: 2015
In this work, we first define intuitionistic fuzzy parameterized soft sets (intuitionistic FP-soft sets) and study some of their properties. We then introduce an adjustable approaches to intuitionistic FP-soft sets based decision making. Finally, we give a numerical example which shows that this method successfully works. © 2014 Elsevier B.V. All rights reserved.
Avci H.,Kilis Aralik University
Fresenius Environmental Bulletin | Year: 2013
Irrigating crops with municipal and industrial wastewaters may lead to elevated concentrations of heavy metals in both soil and agricultural products which, in turn, pose human health risk concerns. Using wastewater as an irrigation resource is common in many countries, including Turkey, which has one of the lowest per capita wastewater treatment plant rates in the world. Although total concentrations of certain contaminants in wastewater are sometimes monitored, there is a significant lack of robust concentration and chemical speciation data from both irrigated soil and the crops themselves. This information is vital to better understanding the risks posed to human health in Turkey through the use of wastewater for irrigation. Gaziantep, in south central Turkey, attracts a large number of immigrants from surrounding cities and the East Anatolia Region. Irrigation with municipal and industrial wastewater in the Gaziantep area affects approximately 150,000 acres of agricultural land, much of which is used to meet local demand for fruits and vegetables. Because analytical data indicate that both field soils and plants grown in those soils have metal concentrations that are in excess of recommended maximum tolerable levels proposed by FAO/WHO, WHO/EU and Turkish Regulations, risks from food consumption may be elevated. Further research is needed to better understand the degree of metal bioaccumulation, ion speciation, and the impacts to human health associated with crops from wastewater-irrigated soils.
Yesil S.,Kahramanmaras Sutcu Imam University |
Hirlak B.,Kilis Aralik University
International Journal of Knowledge Management | Year: 2013
Knowledge sharing barriers reduce the propensity of individuals to share knowledge and produce innovation behaviour. Thus, identifying barriers and their impact on knowledge sharing and individual innovation behaviour is a potential research area to study. Considering lack of studies in the literature, this study provides further evidence regarding the implications of knowledge sharing barriers in the workplace. Data was collected from eighty three academic staff in a higher education institution and analysed with Smart PLS. The results showed that organisation related knowledge sharing barriers are negatively related to knowledge collecting and knowledge donating. The result also indicates that individual knowledge sharing barriers have negative effect on individual innovation behaviours. There was no link found in this study between knowledge sharing and individual innovation behaviour. These findings provide empirical evidence to the further development of knowledge management and innovation research, and insights regarding how to better implement knowledge sharing and foster innovation behaviour in organisations. Copyright © 2013, IGI Global.
Ozdemir M.,Kilis Aralik University
Inorganica Chimica Acta | Year: 2014
In this paper, a novel solid phase supported Schiff base ligand (L 1: MDPMP) was prepared from 2-hydroxy-5-((2-methoxyphenyl)diazenyl) benzaldehyde (L: HMDB) and silica-gel, activated with 3- aminopropyltriethoxysilane (APTES). Cu (II), Co (II), Ni (II) and Mn (II) complexes of silica-supported ligand (L1: MDPMP) were obtained. The ligand and its four metal complexes were characterized by using NMR ( 1H and 13C), FT-MIR/FIR, elemental analysis, ICP-OES, TGA and Scanning Electron Microscope (SEM). Their catalytic performances in catalytic oxidation of cyclohexane were investigated for the selective oxidation of cyclohexane under microwave power. Silica-supported L1-Cu (II) complex was observed well selective catalytic properties for the oxidation of cyclohexane to cyclohexanol and cyclohexanone. © 2014 Elsevier B.V. All rights reserved.
Delihacioglu K.,Kilis Aralik University
IEEE Antennas and Wireless Propagation Letters | Year: 2012
In this letter, a new group of elements of double and triple strips are proposed. Instead of a single perfectly conducting strip, a group of multiple strips constitutes a unit cell. In this case, the group is periodic, not the individual elements. The fraction of electromagnetic power reflected (reflectance) and transmitted (transmittance) of a new type of freestanding frequency selective surface (FSS), made of the group of elements per periodic cell, is examined theoretically for transverse magnetic (TM) polarization. The electric field integral equation (EFIE) technique with the subdomain overlapping piecewise sinusoidal (PWS) basis functions are employed to compute the unknown current coefficients induced on the metallic elements. It is observed that the spectral characteristic of single-strip FSS is enhanced by using periodic group cells. There exist transmission bands that allow full energy transfer for unequal lengths of double and triple strips. Double and triple resonances appeared in the event of unequal strip lengths. Since it is observed multiple resonances, the structure can be used in multiband antenna applications and subreflector systems. The computed results of strip FSS are compatible with the measured and calculated results in literature. © 2011 IEEE.
Avci H.,Kilis Aralik University |
Deveci T.,Kilis Aralik University
Ecotoxicology and Environmental Safety | Year: 2013
Samples of soil and food plants were collected from wastewater-irrigated fields in the vicinity of Gaziantep, in southeast Turkey, and analyzed for several trace elements (TEs). The concentrations of Co, Mo and Zn in edible portions of corn, mint and vegetables (eggplant, pepper and tomato) were 0.03-0.66, 0.1-3.2 and 8-148mgkg-1, respectively. In the edible portions of corn and mint, Cd, Cr, Cu, Ni and Pb concentrations in all samples were <0.01-0.05, 2.0-5.5, 6-47, 0.6-6.7 and 0.2-3.5mgkg-1, respectively. No single plant species had consistently high concentrations of all metals. For example, corn had the highest concentration of Zn (89mgkg-1), but the lowest concentration of Cd (<0.01mgkg-1). The maximum concentrations of some TEs in some crop samples, as well as soil samples, exceeded certain threshold values set in Turkey and other countries. For some TEs there was little difference between wastewater-irrigated and control soil concentrations. Transfer factors (TFs; plant concentration/soil concentration) were high for Cu, Zn and Mo, in comparison with the other TEs (Cd, Co, Cr, Ni and Pb). Higher uptake of certain metals may be associated with the dominant form of the element in the soil matrix. The uptake of chemicals to plant tissues is influenced by the chemical and physical characteristics of the soil and species-specific factors. Although the geochemistry of the region plays a significant role in the levels of TEs in soil and plants, bioaccumulation of metals and subsequent toxicity to plants and animals can be exacerbated by higher environmental concentrations caused by wastewater irrigation and other anthropogenic factors. © 2013 Elsevier Inc.
Dincer F.,Kilis Aralik University
Journal of Electronic Materials | Year: 2015
This study numerically and experimentally introduces and investigates H-shaped metamaterials (MTMs) with negative refractive index on the coupling effect of a split ring resonator at the microwave X-band frequencies. The proposed models, consisting of one and two H-shaped MTMs structures, are designed in X-band for modern radar applications. The MTM structures show strong resonance at a range between 8 and 12 GHz. In addition, the effective constitutive parameters are revealed by using a retrieval procedure to verify the negative refraction phenomena of the proposed models. Furthermore, in order to verify the MTM characteristics of the structures, surface current distributions are realized. It can be seen that the structures can be efficiently used for filters, radar applications and so on in a certain frequency regime. © 2015 The Minerals, Metals & Materials Society
Ozdemir M.,Kilis Aralik University
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2016
A new rhodamine-based fluorescent probe 'RhAP' was synthesized and successfully characterized using FT-IR, 13C NMR and 1H NMR spectroscopies, LC-MS/MS spectrometry and elemental analysis. The RhAP, a colorless and non-fluorescent compound, showed a selective fluorescent response and colorimetric change for Zn2 + in HEPES buffer (10 mM, EtOH:water, 2:1, v/v, pH 7.2). Upon the addition of two equivalents of Zn2 + to a solution of RhAP, a nearly 35-fold enhancement of the fluorescence intensity, with an emission maximum at 578 nm, was observed in comparison to the sensor alone under the same experimental conditions. The complex formation between RhAP and Zn2 + was found to have a 1:1 ratio based on calculations obtained from Job's plot and the mole ratio plot methods. The results showed that RhAP can be used as an effective fluorescent probe for selective detecting of Zn2 + in an aqueous medium. © 2016 Elsevier B.V. All rights reserved.
Avci H.,Kilis Aralik University
Toxicological and Environmental Chemistry | Year: 2012
By inducing elevated concentrations of certain trace metals in soil, irrigation with domestic and industrial wastewater creates a potential risk to human health. This study was conducted to assess the concentrations of the trace metals Cd, Cr, Cu, Ni, and Pb in some vegetable crops irrigated with industrial and municipal wastewater and to estimate the potential health risks of these metals to humans via the consumption of those foods (eggplant, pepper, and tomato). Vegetable samples from wastewater-irrigated fields were collected from 17 locations around Gaziantep City in Southeastern Turkey. The mean concentrations of Cd, Cr, Cu, Ni, and Pb in edible portions of eggplant, pepper, and tomato were 0.17 (0.01-0.52), 2.6 (1.4-4.8), 16 (7.41-60.54), 2.9 (0.6-6.1) and 0.70 (0.08-4.48) mg kg-1, respectively. Cr, Cu, and Ni concentrations in all the 38 vegetable samples exceeded the Food and Agriculture Organization and World Health Organization (FAO/WHO) and the World Health Organization and European Union (WHO/EU) limits, Cd concentrations in 36 samples exceeded the WHO/EU and in 14 the FAO/WHO limit, Pb concentrations in nine samples exceeded the FAO/WHO and in 24 samples the Turkish regulations. These values indicate that the consumption of vegetables irrigated with industrial and municipal wastewater may represent an important exposure pathway to humans. Monitoring of wastewater-irrigated vegetables is essential to reduce or eliminate unnecessary risks. © 2012 Copyright Taylor and Francis Group, LLC.
Ozdemir M.,Kilis Aralik University
Journal of Photochemistry and Photobiology A: Chemistry | Year: 2016
A fluorescent sensor 'RhAsP' prepared from rhodamine hydrazine and 2-hydroxy-acetophenone was designed and synthesised. The characterisation of 'RhAsP' was also accomplished by using FT-IR, 1H NMR, 13C NMR, ESI-MS, elemental analysis, fluorescence and UV/vis spectroscopy. For the purpose of investigating optical sensing behaviour of 'RhAsP' toward various metal ions including alkali, alkaline earth and transition metal ions (Na+, K+, Ag+, Ca2+, Mg2+, Cr3+, Fe3+, Hg2+, Cu2+, Pb2+, Zn2+, Fe2+, Co2+, Ni2+, Cd2+, Al3+ and Mn2+) in aqueous medium under physiological pH conditions, fluorescence and absorption spectroscopic techniques were carefully conducted. Thereby, 'RhAsP' showed both colorimetric and fluorometric selective recognition of Hg2+ from colorless to purple with a reversible 'off-on' fluorescence response. In addition, a nearly 100-fold increase in emission intensity was determined upon the addition of two equivalents Hg2+ ions. © 2015 Elsevier B.V. All rights reserved.