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Publication type : Article ✕Databases : Springer ✕
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Approximate Solution of the System of Linear Volterra-Stieltjes Integral Equations of the Second Kind

Avıt ASANOV | Kalıskan MATANOVA

A numerical solution of the system of linear Volterra–Stieltjes integral equations of the second kind has been found and analyzed using the so-called generalized trapezoid rule. Conditions for estimating the error have also been determined and justified. A solution of an example obtained using the proposed method is given.

Article 2022 Fen Fakültesi Journal of Mathematical Sciences262 ( 2 ) 56 Views
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Characterization of cereal cyst nematodes in wheat using morphometrics, SCAR markers, RFLP, and rDNA-ITS sequence analyses

Şenol YILDIZ

In this study, morphological and molecular characterizations of twenty-four Heterodera populations (cereal cyst nematodes, CCNs) collected from wheat production fields in Turkey were carried out. Light microscopy, species-specific markers, RFLP, and ITS sequencing were used to identify the nematode populations. The obtained CCN populations were identified as Heterodera avenae, H. filipjevi, and H. latipons according to the morphometric analysis, which was confirmed by the molecular techniques. The ITS region sequencing analysis confirmed the species identification, and phylogenetic analysis of ...More

Article 2023 Ziraat Fakültesi Tropical Plant Pathology48 ( 2 ) 93 Views
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Interactive effects of cold and temperate conditions on growth and biochemical content of Antarctic microalga Chlorella variabilis YTU.ANTARCTIC.001

Yılmaz KAYA

The aim of this study was to isolate and identify Antarctica microalgae collected through the National Antarctic Science Expedition and to examine the growth responses and biochemical contents of Chlorella variabilis under cold and temperate cultivation conditions in growth medium consisting of various nitrogen concentrations under different lighting cycle parameters. In this study, the Antarctic microalgae Chlorella variabilis YTU.ANTARCTIC.001, was cultivated at different temperatures of 4, 13, 20 and 27 °C in modified BG-11 medium with various concentrations of NaNO3 (0, 0.75, 1.5, 2.5 and ...More

Article 2023 Fen Fakültesi Journal of Applied Phycology35 ( 2 ) 67 Views
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Ordinary differential equations with power boundary layers

Asan ÖMÜRALİEV | Ella ABILAYEVA

The regularized asymptotics of a solution of the Cauchy problem for systems of singularly perturbed ordinary differential equations is constructed. It is shown that a power boundary layer appears in such problems in addition to other boundary layers.

Article 2019 Fen Fakültesi Journal of Mathematical Sciences242 ( 3 ) 46 Views
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Regularization of the Singularly Perturbed Cauchy Problem for a Hyperbolic System

Asan ÖMÜRALİEV | Ella ABILAYEVA

In this paper we construct the asymptotics of the solution of the Cauchy problem for a singularly perturbed hyperbolic system by using the regularization method for singularly perturbed problems of S.A. Lomov. The regularization method for singularly perturbed problems of S.A. Lomov is used for the first time to construct the asymptotic solution of a hyperbolic system.

Article 2022 Fen Fakültesi Journal of Mathematical Sciences264 ( 4 ) 70 Views
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Serum biochemical reference values of Kyrgyz donkeys (Equus asinus)

Nurcamal ÖMÜRZAKOVA

The aim of the study was to determine the some serum biochemical values of Kyrgyz donkeys and present the reference values. Fifty (50) healthy donkeys in different ages (6–24 months, 2–15 years, and > 15 years old) and gender (male and female) were clinically examined and blood samples were taken. Serum triglycerides (TG), creatine phosphokinase (CPK), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), alkaline phosphatase (ALP), total bilirubin (TBil), total protein (TP), albumin (Alb), creatinine (Creat), urea (Urea), amylase (Amy), lipase (Lip), calcium (Ca), magnesium (Mg) ...More

Article 2019 Fen Fakültesi Comparative Clinical Pathology28 ( 3 ) 70 Views
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Some hematological and biochemical reference values of the thoroughbred Appaloosa horse breeds reared in Kyrgyzstan

Metin BAYRAKTAR | Ruslan SALIKOV

The aim of this study was to determine the normal hematological and biochemical parameters of the Thoroughbred Appaloosa horse breeds which reared in Tong and Issık-Kul regions of Kyrgyzstan. Fifty-six (n  56) healthy horse breeds in different ages (0–12 months and 1–5 years) and gender (n  29 male and n  27 female) were clinically examined and blood samples were taken. Red blood cell (RBC) count, white blood cell (WBC) count, the count (#); the percentage () of the lymphocytes (lymph), monocytes (mid), granulocytes (gran); and the values of hemoglobin (HGB), hematocrit (HCT), blood clot cell ...More

Article 2019 Veteriner Fakültesi Comparative Clinical Pathology28 ( 6 ) 21 Views
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Construction, characteristics and high throughput molecular screening methodologies in some special breeding populations: a horticultural perspective

Hasan CAN | İbrahim İlker ÖZYİĞİT | Mustafa PAKSOY

Advanced marker technologies are widely used for evaluation of genetic diversity in cultivated crops, wild ancestors, landraces or any special plant genotypes. Developing agricultural cultivars requires the following steps: (i) determining desired characteristics to be improved, (ii) screening genetic resources to help find a superior cultivar, (iii) intercrossing selected individuals, (iv) generating genetically hybrid populations and screening them for agro-morphological or molecular traits, (v) evaluating the superior cultivar candidates, (vi) testing field performance at different location ...More

Article 2019 Ziraat Fakültesi Journal of Genetics98 ( 3 ) 61 Views
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Exploring of the ameliorative effects of Nerium (Nerium oleander L.) ethanolic flower extract in streptozotocin induced diabetic rats via biochemical, histological and molecular aspects

Ali ASLAN

Background: Nerium oleander L. is ethnopharmacologically used for diabetes. Our aim was to investigate the ameliorative effects of ethanolic Nerium flower extract (NFE) in STZ-induced diabetic rats. Methods: Seven random groups including control group, NFE group (50 mg/kg), diabetic group, glibenclamide group and NFE treated groups (25 mg/kg, 75 mg/kg, and 225 mg/kg) were composed of forty-nine rats. Blood glucose level, glycated hemoglobin (HbA1c), insulin level, liver damage parameters and lipid profile parameters were investigated. Antioxidant defense system enzyme activities and reduced gl ...More

Article 2023 Fen Fakültesi Molecular Biology Reports50 ( 5 ) 23 Views
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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 ...More

Article 2023 Mühendislik Fakültesi Journal of Soil Science and Plant Nutrition23 ( 2 ) 39 Views
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An app for apples: Citizen-led mapping of fire blight in Central Asia

Saykal BOBUŞOVA | Tinatin DOOLOTKELDİEVA

Fire blight, caused by the bacterial pathogen Erwinia amylovora, is a severe bacterial disease of apple and pear that can quickly destroy whole plants. In the last decade, it was also detected in Central Asia, where wild pomaceous fruit plants represent the dominant species in mid-altitude forests and constitute a critical foundation for the entire ecosystem. Efficiently informing farmers, forestry services and private persons about the instances and dangers of fire blight, the correct way to recognize the symptoms, and the methods of disease control is thus of paramount importance in a vast a ...More

Article 2023 Ziraat Fakültesi Journal of Plant Pathology ( Published online: 30 May 2023 ) 36 Views
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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 ...More

Article 2023 Fen Fakültesi Optical and Quantum Electronics55 ( 8 ) 23 Views
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