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Bulunan: 14 Adet 0.001 sn
BM Sürdürülebilir Kalkınma : Sudaki Yaşam ✕İndex Türü : SCI Expanded ✕
Koleksiyon [2]
Araştırmacılar [12]
BM Sürdürülebilir Kalkınma [9]
Fakültesi / Enstitütü [3]
Yayın Türü [1]
Yayımlanma Yılı [7]
Dil [1]
Kaynak [12]
Veri Tabanları [9]
İndex Türü [2]
Yayıncı [9]
Bölümü [5]
Ulusal/Uluslararası [1]
Konu Başlıkları [35]
Sudaki YaşamSürdürülebilir kalkınma için okyanusları, denizleri ve deniz kaynaklarını korumak ve sürdürülebilir kullanmak
Erişime Açık

No Evidence of an Elevation Effect Caused by Temperature Differences on Soil Microbial Properties in a Walnut Fruit Forest in Kyrgyzstan

Cıldız ÖSKÖNBAEVA

This study is to investigate the effect of differences in annual average temperature on soil microbial communities as caused by elevation in walnut-fruit forests in Kyrgyzstan with similar vegetation. Soil samples (n 10 per site) were collected from top- and subsoil at three elevation levels (1000, 1300 and 1600 m above sea level) with an average temperature difference of 1.3 °C between sites and analysed for soil chemical and biological properties. All soil properties showed high variability within, but most revealed no differences between elevation levels. Microbial biomass, activity and com ...Daha fazlası

Makale 2023 Mühendislik Fakültesi Journal of Soil Science and Plant Nutrition23 ( 2 ) 39 Görüntülenme
Erişime Açık

Solitary wave solutions to some nonlinear conformable partial differential equations

Ercan ÇELİK

Fractional calculus is a field that is currently used in the world’s applications in many science and engineering fields where many models are still being developed and researched. The conformable time-fractional gives the full history of this function, which is the advantage of using fractional calculus to solve physical problems. In this study, the conformable time-fractional extended (2  1)-dimensional quantum Zakharov-Kuznetsov and the time-fractional modified Korteweg-de Vries equations are investigated by using the the modified exp (−Ω(ξ))-expansion function approach. Some new prototype ...Daha fazlası

Makale 2023 Fen Fakültesi Optical and Quantum Electronics55 ( 8 ) 23 Görüntülenme
Erişime Açık

On the new hyperbolic wave solutions to Wu-Zhang system models

Ercan ÇELİK

In this study, some solitary wave solutions of the Wu-Zhang system are analyzed using the modified expansion function method and the sine-Gordon expansion method. Solitary wave solutions of this non-linear mathematical model consisting of hyperbolic and trigonometric function structures are get. Two and three dimensional, density graphics of the solitary solutions of the mathematical models are drawn by choosing the appropriate parameters. It was seen that all solution functions found as a result provide the mathematical model. In this study, Wolfram Mathematica software program was used for a ...Daha fazlası

Makale 2022 Fen Fakültesi Optical and Quantum Electronics54 ( 5 ) 123 Görüntülenme
Erişime Açık

Complex solutions to the higher-order nonlinear boussinesq type wave equation transform

Ercan ÇELİK

The higher-order nonlinear Boussinesq type wave equation describes the propagation of small amplitude long capillary-gravity waves on the surface of shallow water. Mathematical physics, shallow water waves, fluid dynamics, and fluid movement are all examples of this model. To acquire exact solutions in the form of solitary wave and complex functions solutions, we use the (m 1/G')-expansion method. These results aid mathematicians and physicians in comprehending the model's physical phenomena. This approach may be employed on different models in order to generate whole new solutions for nonline ...Daha fazlası

Makale 2022 Fen Fakültesi Ricerche di Matematica ( Published online: 06 May 2022 ) 42 Görüntülenme
Erişime Açık

Ecological Assessment of Technogenically Disturbed Soils of the Mountain Ecosystems of Kyrgyz Republic Based on the TRIAD Method

Nurzat TOTUBAYEVA | Kanatbek KOCOBAYEV | Aygül USUBALİYEVA | Ciyde TOKPAEVA

Comprehensive studies of soil contamination were performed in the area of settlement Kichi-Kemin (Kyrgyz Republic). Soils of the Kyrgyz Republic are exposed to waste (tailings) of many industrial enterprises of the mining industry not far from the village of A k-Tuz, located 145 km from the capital of Kyrgyz Republic, Bishkek, at an altitude of 2300 m above sea level. It is noted that 4.17 million tons of radioactive waste from one of the enterprises were once disposed of at four tailings in the Kichi-Kemin Valley. The main waste elements are radioactive thorium, heavy metals such as cadmium, ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Polish Journal of Environmental Studies31 ( 3 ) 63 Görüntülenme
Erişime Açık

Microbiological Diversity and Biotechnological Potential of the Soil Ecosystem of a High-Mountainous Landfill

Nurzat TOTUBAYEVA | Kanatbek KOCOBAYEV | Ciyde TOKPAEVA

Strains isolated from high mountain industrial landfills have high biotechnological potential and studying their diversity is relevant. The objective of this study was to investigate the microbial diversity of oil-contaminated soils at a high mountain mine located 4000 meters above sea level, isolated and characterized by hydrocarbon-resistant bacteria and compare the degradation efficiency of two bacterial consortia. The surface layer (0-30 cm) that consists of 10440 mg/kg hydrocarbons were used for the experiment. A bacteria group of the three genera Pseudomonas, Flavobacterium, and Rhodococ ...Daha fazlası

Makale 2019 Mühendislik Fakültesi Polish Journal of Environmental Studies28 ( 6 ) 92 Görüntülenme
Erişime Açık

Thermal and Optical Properties of In and In2O3 Nanoparticles Synthesized Using Pulsed Plasma in Water

Emil ÖMÜRZAK

We present small indium (In) nanoparticles with an average diameter of 4.5 nm synthesized by pulsed plasma in water. Slightly increased lattice constants and thermal stability of the tetragonal In are revealed by X‐ray diffraction analysis, Rietveld refinement, and thermogravimetric analysis. The highly crystalline body‐centered cubic indium oxide (In2O3) nanoparticles with an average diameter of 12 nm and various shapes (semispherical, semihexagonal, and semicubic) are obtained by annealing the as‐synthesized In nanoparticles at 450 °C. The bandgap energy of the In2O3 nanoparticles is 3.63 eV ...Daha fazlası

Makale 2018 Mühendislik Fakültesi Physica Status Solidi (A) – Applications and Materials Science215 ( 11 ) 65 Görüntülenme
Erişime Açık

Physiological and biochemical effects of nickel on rainbow trout (Oncorhynchus mykiss) tissues: Assessment of nuclear factor kappa B activation, oxidative stress and histopathological changes

Ertan ORUC

We investigated changes in nuclear factor kappa B (NFkB) activity, antioxidant responses and histopathological effects in the liver, gill and kidney tissues of rainbow trout exposed to nickel chloride (Ni). Two different concentrations (1 mg/L and 2 mg/L) were administrated to fish for 21 days. Tissues were taken from all fish for NFkB activity, histopathological examination and determination of superoxide dismutase (SOD), catalase (CAT) enzyme activity and of lipid peroxidation (LPO), and glutathione (GSH) levels. The findings of this study indicated that Ni exposure led to a significant incr ...Daha fazlası

Makale 2017 Veteriner Fakültesi Chemosphere166 105 Görüntülenme
Erişime Açık

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

Makale 2021 Fen Fakültesi Biotechnology and Biotechnological Equipment35 ( 1 ) 158 Görüntülenme
Erişime Açık

Genomic analysis of a functional haloacid-degrading gene of Bacillus megaterium strain BHS1 isolated from Blue Lake (Mavi Golu, Turkey)

Yılmaz KAYA

Purpose: Bacillus megaterium strain BHS1, isolated from an alkaline water sample taken from Mavi Golu (Blue Lake, Turkey), can grow on minimal medium containing 2,2-dichloropropionic acid. We characterized this bacterium at the genomic level. Methods: The HiSeq platform was used to carry out genome sequencing, de novo assembly, and scaffolding with strain BHS1. Next, genome data were analyzed to demarcate DNA regions containing protein-coding genes and determine the function of certain BHS1 genes. Finally, results from a colorimetric chloride ion-release assay demonstrated that strain BHS1 pr ...Daha fazlası

Makale 2021 Fen Fakültesi Annals of Microbiology71 ( 1 ) 86 Görüntülenme
Erişime Açık

Phosphorous removal from anaerobically digested municipal sludge centrate by an electrocoagulation reactor using metal (Al, Fe and Al-Fe) scrap anodes

Mehmet KOBYA

Phosphates are a major cause of eutrophication and growth of algal blooms in surface waters. The current study investigated phosphorus removal from sludge centrate effluent (SCE) of a municipal wastewater plant by packed-bed electrocoagulation (EC) reactor. Distinctively, iron (Fe), aluminum (Al) and Al-Fe hybrid scrap anodes were used. The influence of initial pHi, applied current and packed anode bed density were evaluated. Phosphorous removal efficiency of 99.99 ?as obtained at applied current of 0.20A with anode bed densities of 0.18 kg Al/m3 (pHi 5.0) and 0.48 kg Fe/m3(pHi 7.0). Optimum o ...Daha fazlası

Makale 2021 Mühendislik Fakültesi Process Safety and Environmental Protection152 69 Görüntülenme
Erişime Açık

A case study performed in Kucukcekmece Lagoon channel/Istanbul, Turkey: how the heavy metal contamination and the seasonal variations on phytoplankton composition influence water quality

İbrahim İlker ÖZYİĞİT

In this work, the experiments related to seasonal variations of phytoplankton composition and heavy metal contamination along with some water quality parameters were carried out throughout the channel, serving as a waterway between Lake Kucukcekmece and the Sea of Marmara. Considered as a Class B wetland, the lake has been stayed within the metropolitan area of Istanbul overtime. The samples from the surface water were taken monthly by using Nansen bottles at 5 sampling sites through the period of March-November. After experimental procedures, a total of 46 taxa were recorded belonging to Baci ...Daha fazlası

Makale 2021 Fen Fakültesi Desalination and Water Treatment239 100 Görüntülenme
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