Ultrasound-assisted photocatalytic decomposition of rifadin with biochar and CNT-based NiCr layered double hydroxides

Mehmet KOBYA

Modification of layered double hydroxides (LDHs) is known to be beneficial for boosting the consistent formation of reactive oxygen species (ROSs) and enhancing the photocatalytic process. Herein, a facile synthesis method for preparing carbon nanotube (CNT) and biochar (BC)-based NiCr LDH (NC) nanocomposites as a sonophotocatalyst for the efficient degradation of rifadin (RA) was provided. The formation of thin nanosheet structures of NC along with porous and nanotube structures of BC and CNT was well approved by scanning electron microscope (SEM) and high-resolution transmission electron mic ...Daha fazlası

Makale 2023 Mühendislik Fakültesi Surfaces and Interfaces36 54 Görüntülenme

A techno-economical assessment of treatment by coagulation-flocculation with aluminum and iron-bases coagulants of landfill leachate membrane concentrates

Mehmet KOBYA

Landfill leachate treatment involved with the membrane bioreactor (MBR) combined with membrane treatment via nanofiltration (NF) and/or reverse osmosis (RO) is widely used in Turkey. This treatment produces landfill leachate membrane concentrates (LLMCs) with an undesirably high concentration of contaminants. In the study, two different nanofiltration concentrates of leachate were coagulated. Coagulant dosages from 0.10 to 5.0 g of Me3/L (Me3: Al3 or Fe3), and the pH values ranged from 4.0 to 8.0 and 3.0-9.0 for Al-based and Fe-based coagulants, respectively. The most efficient pH values were ...Daha fazlası

Makale 2023 Mühendislik Fakültesi Chemosphere314 75 Görüntülenme

The Impact of Government Effectiveness on Trade and Financial Openness: The Generalized Quantile Panel Regression Approach

Sezer KAHYAOĞLU

Purpose: This paper aims to investigate the impact of government effectiveness on trade and financial openness in 35 selected countries around the globe. Design/methodology/approach: A quantitative research approach was applied in the study using the generalized quantile panel regression approach to analyze the impact of identified variables in these selected countries. Panel quantile models with high estimation performance are preferred in the presence of excessive deviations and in cases where the normal distribution is invalid. Findings/results: The empirical findings indicate that selected ...Daha fazlası

Makale 2023 İktisadi ve İdari Bilimler Fakültesi Journal of Risk and Financial Management16 ( 1 ) 19 Görüntülenme

Mixed Bacteriological Isolation Percentages from the Uterus of Cows Slaughtered due to Infertility

Ali RIŞVANLI

Background: Intrauterine mixed infections are an important problem in cattle breeding. In this study, we aimed to determine the mixed bacteriological isolation rates from the uterus of cows with clinical metritis and to reveal the relationships between the bacteria that isolated together.Methods: For this purpose, sterile swabs were taken from 490 uterus obtained from cattle slaughtered due to infertility in three slaughterhouses and used them to perform microbiological tests. After evaluating the data, it was determined that the bacterial isolation rate from uterus with clinical metritis was ...Daha fazlası

Makale 2022 Veteriner Fakültesi Advancements in Life Sciences9 ( 4 ) 9 Görüntülenme

Perfluorooctanoic acid (PFOA) removal from real landfill leachate wastewater and simulated soil leachate by electrochemical oxidation process

Mehmet KOBYA

Poly and perfluoroalkyl compounds (PFASs) are a group of chemicals that are widely used and are difficult to purify. Within this group, perfluorooctanoic acid (PFOA), known for its highly polar and strong carbon-fluorine bonds, is a frequently encountered species in surface water, drinking water, and groundwater. In this study, we investigated the efficiency of electrooxidation (EO) in PFOA removal, optimization of EO parameters, and groundwater simulation in a realistic scenario. The EO optimization experiments were performed with a boron-doped diamond (BDD) anode for different values of pH, ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Environmental Technology & Innovation28 46 Görüntülenme

Effect of somatic cell count on milk composition and some chemical properties of milk

Ali RIŞVANLI

Subclinical mastitis is a very important disease for dairy cattle farms. As a result of the deterioration of milk quality, it causes economic losses in enterprises. Milk samples of 180 cows were divided into five groups according to the somatic cell count. Some chemical properties and composition were measured in milk samples. The ratio of solid-non-fat, mineral matter, lactose, and protein decreased as the somatic cell count of the milk increased (P < 0.05). No statistical difference was observed between the fat content of milk and the level of somatic cell count (P > 0.05). Although specific ...Daha fazlası

Makale 2022 Veteriner Fakültesi Arquivo Brasileiro de Medicina Veterinária e Zootecnia / Brazilian Journal of Veterinary and Animal Science74 ( 6 ) 25 Görüntülenme

Educational Metaphors: High School Students' Perceptions of Schools in Kyrgyzstan

Kişimcan EŞENKULOVA | Kadiyan BOOBEKOVA

Focusing on the case study of post-Soviet Kyrgyzstan, this article examines high school students' perception of their schools and education by using metaphors. A total of 1433 high school students participated in this research. Based on the data that we collected from 9th and 10th grade students during field research (January - February 2020) in various regions of Kyrgyzstan and analysed students' answers about their schools. The findings show that the study's participants produced 178 metaphors about their schools. The participants used 102 positive, 108 negative metaphors and 32 metaphors fo ...Daha fazlası

Makale 2022 Edebiyat Fakültesi Sodobna PEDAGOGIKA - Journal of Contemporary Educational Studies73 ( 3 ) 19 Görüntülenme

ON OPTIMAL CONTROL OF THE INITIAL VELOCITY OF AN EULER-BERNOULLI BEAM SYSTEM

Ercan ÇELİK

In this study, we consider an optimal control problem for an Euler-Bernoulli beam equation. The initial velocity of the system is given by the control function. We give sufficient conditions for the existence of a unique solution of the hyperbolic system and prove that the optimal solution for the considered optimal control problem is exists and unique. After obtaining the Frechet derivative of the cost functional via an adjoint problem, we also give an iteration algorithm for the numerical solution of the problem by using the Gradient method. Finally, we furnish some numerical examples to dem ...Daha fazlası

Makale 2022 Fen Fakültesi Thermal Science26 ( Special Issue: 2 ) 39 Görüntülenme

H-infinity-NORM EVALUATION FOR A TRANSFER MATRIX VIA BISECTION ALGORITHM

Ercan ÇELİK

In this paper, we compute H.-norm of a transfer matrix, via bisection algorithm. The algorithm is given and applied some problems. The problems are choosen from various areas of control theory such as aircraft models and decentralized interconnected systems.

Makale 2022 Fen Fakültesi Thermal Science26 ( Special Issue: 2 ) 51 Görüntülenme

Nomadic pastoralism and interaction zones (The case of pre-Soviet Kyrgyz pastoralism)

Baktıbek İSAKOV | Cıldız URMANBETOVA

This paper re-conceptualizes the four-seasonal cycling tradition of pre-Soviet Kyrgyz pastoralism, reconsidering the existing archival and oral materials. It argues that the summer quarters (zhailoo) in nomadic cycling were core contact zones for whole clan-based Kyrgyz community in pre-Soviet time whereas, the other winter, spring and autumn quarters remained in the margins. In addition, since all small and large nomadic groups from different regions were interacting in summer quarter, practicing the common language, ceremonies and traditions, this quarter also was preventing the emergence of ...Daha fazlası

Makale 2022 Edebiyat Fakültesi Voprosy Istorii / Вопросы истории12 ( 3 ) 95 Görüntülenme

Effects of botanical gardens on student environmental perception

Hasan YILMAZ

This paper examines the role of the classroom environment in promoting student well-being and, more specif-ically, a sense of responsibility towards nature in the city. The study analyzed how indoor vs outdoor educational environments affect students' perception of events and phenomena focusing on emotional, behavioral and cognitive processes. It was conducted in the Kayakyolu Secondary School, Erzurum, Turkey with 282 students ranging in age from 11 to 14 in grades 5-8. They participated in reading a story in two distinct environments: an enclosed indoor classroom and an outdoor botanical gar ...Daha fazlası

Makale 2022 Ziraat Fakültesi Ecological Informatics73 57 Görüntülenme

A Wooly Way? Fiber technologies and cultures 3,000-years-ago along the Inner Asian Mountain Corridor

Kubatbek TABALDİYEV

Wool-focused economies yielded a pastoralist materiality that visibly shaped the lived experiences of Central Asian populations today. In this paper, we investigate the earlier application of fibers through a key mountain corridor for social interactions during Prehistory. We focus on the site of Chap 1 located in the highlands of the Tien Shan Mountains of Kyrgyzstan where researchers have found a complex agropastoral subsistence culture was established from at least ca. 3,000 BCE. The perishable materials that would have accompanied the early spread of cultural and technological traditions r ...Daha fazlası

Makale 2023 Edebiyat Fakültesi Frontiers in Ecology and Evolution10 83 Görüntülenme

Detaylı Arama

Filtreler

Koleksiyon [9]

Araştırmacılar [35]

BM Sürdürülebilir Kalkınma [17]

Fakültesi / Enstitütü [14]

Yayın Türü [10]

Yayımlanma Yılı [22]

Dil [5]

Kaynak [35]

Veri Tabanları [35]

İndex Türü [11]

İndex Türü 2 [5]

Yayıncı [34]

Bölümü [35]

Ulusal/Uluslararası [2]

Konu Başlıkları [35]

Mehmet KOBYA

Mehmet KOBYA

Sezer KAHYAOĞLU

Ali RIŞVANLI

Mehmet KOBYA

Ali RIŞVANLI

Kişimcan EŞENKULOVA | Kadiyan BOOBEKOVA

Ercan ÇELİK

Ercan ÇELİK

Baktıbek İSAKOV | Cıldız URMANBETOVA

Hasan YILMAZ

Kubatbek TABALDİYEV