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Found: 14 Piece 0.001 sn
Publication year : 2021 ✕Publisher : Taylor & Francis ✕
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Functional profiling of bacterial communities in Lake Tuz using 16S rRNA gene sequences

Yılmaz KAYA

The 16S rRNA amplicon sequencing technique is a key aspect of studies of microbial communities but does not provide direct evidence of a community

Article 2021 Fen Fakültesi Biotechnology and Biotechnological Equipment35 ( 1 ) 158 Views
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Synthesis of Smart Food Packaging from Poly (Gelatin-co-Dimethyl Acrylamide). Citric Acid-Red Apple peel Extract

Nahit AKTAŞ

A novel and smart hydrogel was synthesized from N, N dimethyl acrylamide (DMAAm), gelatin, and citric acid (CA) red apple peel extract (RApE) to be utilized as a multi-functional food packaging material. The p(Gelatin-co-DMAAm)/CA-RApE was prepared through a redox polymerization technique in film form in petri dishes. Mechanical and water resistance of the p(Gelatin-co-DMAAm)/CA-RApE was improved by the addition of citric acid and N, N, methylenebisacrylamide (MBA) as cross linker. The characterization of p(Gelatin-co-DMAAm)/CA-RApE was carried out by Fourier transform infrared spectroscopy (F ...More

Article 2021 Mühendislik Fakültesi Soft Materials19 ( 1 ) 130 Views
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Economic Impacts of Bt (Bacillus thuringiensis) Cotton

İbrahim İlker ÖZYİĞİT

In recent years, high-yield production has gained importance due to the decrease in agricultural fields in the world and the rapid increase in the population. Cotton is an important source of income for farmers worldwide and is an important crop, especially for the textile industry. Bt-cotton technology, which entered our lives in 1996, has been quickly adopted in many developed and developing countries. It has been shown to provide advantages in many areas. In particular, the economic growth is gaining importance every year. Additionally, it has also brought an environmentally friendly soluti ...More

Article 2021 Fen Fakültesi Journal of Natural Fibers19 ( 12 ) 73 Views
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Lemna minor, a hyperaccumulator shows elevated levels of Cd accumulation and genomic template stability in binary application of Cd and Ni: a physiological and genetic approach

İbrahim İlker ÖZYİĞİT

In this study, to determine whether having potential to be used as hyperaccumulator for Cd and Ni, numerous experiments were designed for conducting assessments for physiological and genotoxic changes along with defining possible alterations on mineral nutrient status of Lemna minor L. by applying Cd-Ni binary treatments (0, 100, 200 and 400 mu M). Our study revealed that there were increases in the concentrations of B, Cr, Fe, K, Mg, and Mn whereas decreases were noticed in the concentrations of Na and Zn and the levels of Ca were inversely proportional to Cd-Ni applications showing tendency ...More

Article 2021 Fen Fakültesi International Journal of Phytoremediation23 ( 12 ) 93 Views
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Polyaniline-coated charcoal ash: a novel high-capacity adsorbent for removal of thiocyanate ions from aqueous solutions

Mehmet KOBYA

Removal of thiocyanate (SCN-), which is widely used in many industrial processes is of concern due to this toxicity. In this work, the potential of polyaniline-coated charcoal ash (PANI-CCA) as a low-cost and efficient adsorbent was evaluated in order to remove thiocyanate ions from aqueous solution. Morphologies and chemical composition of the PANI-CCAhave been examined by using scanning electron microscopy and X-ray fluorescence spectrometry (XRD). Batch experiments were performed to examine the effects of operating conditions such as pH (6.0-10.0), ash dosage (0-0.30 g/50 ml), initial dye c ...More

Article 2021 Mühendislik Fakültesi International Journal of Environmental Analytical Chemistry103 ( 16 ) 59 Views
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Potential human health risks of toxic/harmful elements by consumption of Pseudevernia furfuracea

Ali ASLAN

The potential human health risks of some toxic/harmful elements related to the consumption of Pseudevernia furfuracea (L.) Zopf. were investigated. The toxic/harmful elements (cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), manganese (Mn), nickel (Ni), and zinc (Zn)) were determined in P. furfuracea. According to the analysis result, the maximum (max.) toxic/harmful element value was 62 +/- 3.1 mg/kg for Mn and minimum (min.) value was 0.19 +/- 0.01 mg/kg for Cd. The estimated daily exposure doses (EDEXDs) for men, women and children were dietary (bread) > dietary (tea) > dermal. For diet ...More

Article 2021 Fen Fakültesi International Journal of Environmental Health Research32 ( 9 ) 44 Views
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Electromagnetic characterization of strong-coupled Omega-type bianisotropic metamaterials using the state transition matrix method

Mehmet ERTUĞRUL

A feasible extraction procedure is proposed to retrieve the diagonal tensor elements of the permittivity and permeability, and the magnetoelectric coupling coefficient of Omega-type biansiotropic metamaterials (MMs). The procedure is based on the state transition matrix approach and uses non-iterative closed-form expressions between constitutive parameters and scattering (S-) parameters to achieve such determination using S-parameters for normal incidence and oblique incidence of TE and TM modes (a desirable feature from practical point of view). S-parameter simulations of a bianisotropic MM s ...More

Article 2021 Mühendislik Fakültesi Waves in Random and Complex Media ( Published online: 22 Jul 2021 ) 55 Views
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Exploring Landscape Archaeology and UAV-Based Survey in the Kochkor Valley, Kyrgyzstan

Kubatbek TABALDİYEV

From the earliest archaeological investigations along Central Asia's Tien Shan range, researchers have noted the diversity of highland communities and their participation in complex subsistence, exchange, and political systems. However, landscape archaeological approaches that might address socio-economic integrations have been limited by discontinuous, sometimes skewed datasets. Here, we present the results of UAV-based survey at Kok-Sai, an upland alluvial slope in the Kochkor Valley of north-central Kyrgyzstan, in which we identified more than 900 archaeological features in a 380 ha study a ...More

Article 2021 Edebiyat Fakültesi Journal of Field Archaeology47 ( 1 ) 134 Views
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Assessment of pollution at the former uranium waste dumpsite near kaji-Say Village/Kyrgyzstan: a genetic and physiological investigation

İbrahim İlker ÖZYİĞİT | Bermet KIDIRALİYEVA | Kadırbay ÇEKİROV | Gülbübü KURMANBEKOVA | Nurzat ŞAYKİYEVA

Kyrgyzstan still suffers from the past practices of radioactive industry operated by the Soviet Union that caused significant impact on ecosystems in this region, especially related with storage of uranium in inadequate conditions. There are at least 50 abandoned sites used as radioactive waste dumps in the country. Due to the pressure of natural and anthropogenic reasons, the structural foundations of mine waste dumps are gradually losing their integrities. Here, particular interest of our research is to reveal current state of radioactive contamination and to make evaluation on the radiologi ...More

Article 2021 Fen Fakültesi Journal of Radiation Research and Applied Sciences14 ( 1 ) 118 Views
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Development of onion oil-based organo-hydrogel for drug delivery material

Nahit AKTAŞ

Agar and Glycerol (AG) based Organo-hydrogels containing different cross-linkers and different amounts of Onion Oil were prepared in order to examine the in vitro release of the antibiotic drug Ceftriaxone and the anti-carcinogenic drug Carboplatin. At preparation of the organo-hydrogels was used free radical polymerization technique in the emulsion media. As a control group, Agar-Glycerol (AG) gel and Agar-Glycerol (p (AG-m) and p (AG-g)) hydrogels were synthesized. When balance swelling rates of organo-hydrogels were examined, different swelling behaviors were observed in different solvent e ...More

Article 2021 Mühendislik Fakültesi Journal of Dispersion Science and Technology44 ( 5 ) 69 Views
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Morphological variation, genetic diversity and phylogenetic relationships of Hypericum triquetrifolium Turra populations from Tunisia

İbrahim İlker ÖZYİĞİT

Hypericum triquetrifolium Turra is an ecologically, medicinally and economically important species in Tunisia. Thirty-six Hypericum individuals sampled from 6 northern Tunisian locations were investigated for their diversity and relationships using 10 inter-simple sequence repeats (ISSR) markers and 10 morphological features at vegetative stage. The phylogenetic analysis, using 308 bp of sequenced ITS1 region, identified the Hypericum individuals as H. triquetrifolium that clustered with members of genus Hypericum section 9, 9a, 9b and 27, in agreement with the previous molecular classificatio ...More

Article 2021 Fen Fakültesi Biotechnology and Biotechnological Equipment35 ( 1 ) 51 Views
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Deciding Heavy Metal Levels in Soil Based on Various Ecological Information through Artificial Intelligence Modeling

İbrahim İlker ÖZYİĞİT

The aim of this paper is to decide on heavy metal levels based on ecological parameters by effectively eliminating common disadvantages such as high cost and serious time-consuming laboratory procedures via an effective artificial intelligence approach. Therefore, this study is hinged on an artificial intelligence technique, ANN, because of its low cost and high accuracy in overcoming the mentioned limitations and obstacles in the determination process of the amounts of elements. The ANNs have thus been employed to determine essential heavy metals, such as Fe, Mn, and Zn depending on Ca, K, an ...More

Article 2021 Fen Fakültesi Applied Artificial Intelligence36 ( 1 ) 85 Views
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