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Articles 1621 - 1650 of 18793
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New Imidazolidindionedioximes And Their Pt(Ii) Complexes: Synthesis And Investigation Of Their Antitumoral Activities On Breast Cancer Cells, Emrah Karahan, Tuğba Gençoğlu Katmerli̇kaya, Emel Önal, Aydan Dağ, Ayşe Gül Gürek, Vefa Ahsen
New Imidazolidindionedioximes And Their Pt(Ii) Complexes: Synthesis And Investigation Of Their Antitumoral Activities On Breast Cancer Cells, Emrah Karahan, Tuğba Gençoğlu Katmerli̇kaya, Emel Önal, Aydan Dağ, Ayşe Gül Gürek, Vefa Ahsen
Turkish Journal of Chemistry
Breast cancer is one of the most common types of cancer worldwide and has the most lethality ratio for females among all cancers. Although current cancer therapeutics have made considerable advancements, there is still room for improvement in terms of efficacy. Many anticancer drugs have a risk of causing serious adverse effects due to their non-specific cytotoxic effects on both tumor and healthy cells. New therapeutics might have a greater ability to kill cancer cells, reduce the volume of tumors, and improve overall therapy response rates. Herein, we report the efficient synthesis and characterization of three amphi vic-dioximes and their …
Synthesis Of 3-Methyl-3-Buten-1-Ol By Supercritical Co2 In Coordination With Hzsm-5 Catalyzed Formaldehyde-Isobutene Prins Reaction, Hang Yuan, Gui-Ping Cao, Hui Lv
Synthesis Of 3-Methyl-3-Buten-1-Ol By Supercritical Co2 In Coordination With Hzsm-5 Catalyzed Formaldehyde-Isobutene Prins Reaction, Hang Yuan, Gui-Ping Cao, Hui Lv
Turkish Journal of Chemistry
The reaction solvent and catalyst play an essential role in the Prins reaction for the synthesis of 3-methyl-3-buten-1-ol (MBO) from formaldehyde and isobutene. The reactivity of the solid base catalyzed Prins condensation reaction by formaldehyde and isobutene in supercritical CO2 was investigated using CsH2PO4 modified HZSM-5. We finds that the alkaline sites of the alkali-loaded catalyst can extract the α-H on isobutene to generate olefin carbon negative ions, while the supercritical CO2 with weak Lewis acidity can activate formaldehyde to carbon positive ions, which can combine more easily with the carbon negative isobutene to react, thus improving the reactivity of …
Magnetic Solid-Phase Extraction Technique Based On Fe3o4@Coppy-Pth Nanocomposite For Extraction Of Cobalt, Chromium, And Nickel Prior To Determination By Micro-Sample Injection System-Flame Atomic Absorption Spectrometry In Alcoholic And Nonalcoholic Beverages, Meli̇ke Küçüksakalli, Qamar Salamat, Buket Ti̇reli̇, Şükrü Gökhan Elçi̇
Magnetic Solid-Phase Extraction Technique Based On Fe3o4@Coppy-Pth Nanocomposite For Extraction Of Cobalt, Chromium, And Nickel Prior To Determination By Micro-Sample Injection System-Flame Atomic Absorption Spectrometry In Alcoholic And Nonalcoholic Beverages, Meli̇ke Küçüksakalli, Qamar Salamat, Buket Ti̇reli̇, Şükrü Gökhan Elçi̇
Turkish Journal of Chemistry
A novel Fe3O4@coPPy-PTH nanocomposite-based sorbent was prepared via in-situ oxidative polymerization using Fe3O4 nanoparticles with spherical and flower-like morphologies of thiophene and pyrrole as the feedstocks. The synthesized nanocomposite utilized sensitive extraction and determination of the metal ions Co(II), Cr(III), and Ni(II) without a chelating agent, followed by a micro-sample injection system-flame atomic absorption spectrometer (MIS-FAAS). The composition and morphology of Fe3O4@coPPy-PTH nanocomposite were characterized by advanced spectroscopic and imaging techniques like SEM and FT-IR. SEM observations showed the size of Fe3O4 nanoparticles changed from 30 nm to 120 nm in diameter after the copolymer (PPy-PTH) coating. The Fe3O4@coPPy-PTH nanocomposite …
Β-Ketoenamine-Linked Covalent Organic Framework For Efficient Iodine Capture, Onur Büyükçakir
Β-Ketoenamine-Linked Covalent Organic Framework For Efficient Iodine Capture, Onur Büyükçakir
Turkish Journal of Chemistry
Exploring the materials that effectively capture radioactive iodine is crucial in managing nuclear waste produced from nuclear power plants. Herein, a β-ketoenamine-linked covalent organic framework (bCOF) was reported as an effective adsorbent to capture iodine from both vapor and solution. bCOF's high porosity and heteroatom-rich skeleton offer a notable iodine vapor uptake capacity of up to 2.51 g g-1 at 75 oC under ambient pressure. Furthermore, after five consecutive adsorption-desorption cycles, the bCOF demonstrates a high reusability performance with a significant iodine vapor capacity retention. The adsorption mechanism was also investigated using various ex-situ structural characterization techniques, and these mechanistic …
Lacoo3 Is A Promising Catalyst For Dry Reforming Of Benzene Used As A Surrogate Of Biomass Tar, Başar Çağlar, Deni̇z Üner
Lacoo3 Is A Promising Catalyst For Dry Reforming Of Benzene Used As A Surrogate Of Biomass Tar, Başar Çağlar, Deni̇z Üner
Turkish Journal of Chemistry
Tar build-up is one of the bottlenecks of biomass gasification process. Dry reforming of tar is an alternative solution if oxygen chemical potential on the catalyst surface is at sufficient levels. For this purpose, an oxygen donor perovskite, LaCoO3, was used as a catalyst for dry reforming of tar. To circumvent the complexity of the tar and its constituents, benzene molecule was chosen as a model compound. Dry reforming of benzene vapour on the LaCoO3 catalyst was investigated at temperatures of 600, 700, 800 °C, at the CO2/C6H6 ratios of 3, 6, 12 and at space velocities of 14000 and …
Synthesis And Characterization Of New Hexahydroquinoline Derivatives, Evaluation Of Their Cytotoxicity, Intracellular Ros Production And Inhibitory Effects On Inflammatory Mediators, Ezgi̇ Pehli̇vanlar, Deni̇z Arca Çakir, Sonia Sanajou, Hülya Tezel Yalçin, Terken Baydar, Pinar Erkekoğlu, Hani̇fe Avci, Rahi̇me Şi̇mşek
Synthesis And Characterization Of New Hexahydroquinoline Derivatives, Evaluation Of Their Cytotoxicity, Intracellular Ros Production And Inhibitory Effects On Inflammatory Mediators, Ezgi̇ Pehli̇vanlar, Deni̇z Arca Çakir, Sonia Sanajou, Hülya Tezel Yalçin, Terken Baydar, Pinar Erkekoğlu, Hani̇fe Avci, Rahi̇me Şi̇mşek
Turkish Journal of Chemistry
Inflammation is a response to injury and infection in the organism. It can be categorized as acute and chronic inflammation. Chronic inflammation is the underlying cause of many diseases such as Alzheimer's, diabetes, rheumatoid arthritis, atherosclerosis and cardiovascular diseases. Recent studies have proven the anti-inflammatory properties of 1,4-dihydropyridines (1,4-DHPs) and its derivatives, which have many biological properties including calcium channel blockers. The structures of the synthesized compounds were elucidated by IR, 1H-NMR, 13C-NMR and HRMS methods. The cytotoxic properties of the compounds were determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) method in 3T3 cell line. Among the 15 compounds, the three compounds …
Identification Of Blood At Simulated Crime Scenes Using Silver Nanoparticles With Sers, Uğur Köroğlu, Necdet Sağlam, Uğur Tamer, Ramazan Akcan, İsmai̇l Hakki Boyaci, Eylül Evran
Identification Of Blood At Simulated Crime Scenes Using Silver Nanoparticles With Sers, Uğur Köroğlu, Necdet Sağlam, Uğur Tamer, Ramazan Akcan, İsmai̇l Hakki Boyaci, Eylül Evran
Turkish Journal of Chemistry
Analysis of substances and samples obtained from the crime scene are very important in solving forensic cases. In order to determine the variables involved in a crime and to expedite the investigation process, especially the rapid analysis of body fluids in a small quantity and within an environment containing diverse components is necessary. For this reason, it is of great importance to analyse biological fluids with rapid, non-chemical contamination, non-destructive, low-cost and accurate techniques. In recent years, with advancements in laser technology, spectroscopic methods have been introduced as an analytical technique in forensic medicine and chemical studies. This study focuses …
Synthesis And Photooxygenation Of 3-(P-Substituted Phenyl)-3a,8a-Dihydro-4h-Cyclohepta[D]Isoxazoles: Facial Selectivity, Mahi̇re Emel Olgun, Abdullah Menzek, Ertan Şahi̇n, Yasi̇n Çeti̇nkaya
Synthesis And Photooxygenation Of 3-(P-Substituted Phenyl)-3a,8a-Dihydro-4h-Cyclohepta[D]Isoxazoles: Facial Selectivity, Mahi̇re Emel Olgun, Abdullah Menzek, Ertan Şahi̇n, Yasi̇n Çeti̇nkaya
Turkish Journal of Chemistry
Two 3-(p-substituted phenyl)-3a,8a-dihydro-4H-cyclohepta[d]isoxazoles were synthesized by 1,3-dipolar cycloaddition of the corresponding nitrile oxides with cycloheptatriene. Two endoperoxides were synthesized as facially selective and single products in high yields (93-95%) from the reactions of isoxazole derivatives with singlet oxygen. The exact configurations of the endoperoxide with a methyl group in the phenyl ring and the diol synthesized from it were confirmed by X-ray analysis. To elucidate the mechanism, the formation energy of the endoperoxide was investigated by simulations using the software package Gaussian 09 and density functional theory calculations via the M06-2X/6-311+G(d,p) level method in dichloromethane. The results were consistent with …
Corrigendum To “Polybrominated Methoxy- And Hydroxynaphthalenes” [Turkish Journal Of Chemistry 40 (2) 2016 332-346 ], Kiymet Berki̇l Akar, Osman Çakmak, Tuncay Tunç
Corrigendum To “Polybrominated Methoxy- And Hydroxynaphthalenes” [Turkish Journal Of Chemistry 40 (2) 2016 332-346 ], Kiymet Berki̇l Akar, Osman Çakmak, Tuncay Tunç
Turkish Journal of Chemistry
This corrigendum is to address an issue regarding the manuscript’s previous publication. The authors have regrettably noticed that the incorrect version of the figure and crystal data was used in the original published version of this paper. To rectify this oversight and ensure the accuracy of the published work the correct figure and data are included for your reference.
Link to the original article: https://journals.tubitak.gov.tr/chem/vol40/iss2/11/
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Production, Purification, And Specificity Serologically Determination Of Immunoglobulin-Y (Igy) From Chicken Eggs Against Clostridium Tetani Toxoid, Kürşat Teti̇k, Bariş Sareyyüpoğlu
Production, Purification, And Specificity Serologically Determination Of Immunoglobulin-Y (Igy) From Chicken Eggs Against Clostridium Tetani Toxoid, Kürşat Teti̇k, Bariş Sareyyüpoğlu
Turkish Journal of Veterinary & Animal Sciences
Tetanus is a life-threatening bacterial disease of humans and many animal species caused by the neurotoxin tetanospasmin (TeNT) produced by Clostridium tetani. Antitoxins obtained from horses and humans are primarily used to treat this disease. However, there are several clinical side effects and disadvantages associated with the use of these antitoxins. Current techniques for diagnosing tetanus use monoclonal antibodies produced in mice. These antibodies have several advantages, such as homogeneity and specificity. In contrast, a notable feature of polyclonal antibodies, especially egg yolk antibodies (IgYs) extracted from poultry, is that they can be generated in greater quantities than mammalian antibodies …
Investigation Of Using Natural Deep Eutectic Solvents (Nades) For Extraction Of Bioactive Compounds From Aronia Melanocarpa Fruit, Melek Zor
Turkish Journal of Agriculture and Forestry
In this study, for the extraction of polyphenolic compounds found in high amounts in aronia fruit, three different extraction methods (classical, ultrasound, ultrasonic), three different traditional solvents (water, ethanol, acidified 80% methanol) as well as five different natural deep eutectic solvents (NADES) were used. Color indices as L*, a*, b*, C* and H° values, total phenolic, total flavonoid, total monomeric anthocyanin, total antioxidant capacity (DPPH, ABTS and FRAP assays) and phenolic compounds of aronia fruit extracts were analyzed. There were significant differences in the measured parameters depending on the extraction method and solvent type. Extracts in ultrasound extraction and classical …
Characterization And Bioremediation Potential Of Heavy-Metal Resistant Bacteria Isolated From Agricultural Soil, Kheira Dahnoun, Fatima Djadouni, Badiaa Essghaier, Chahnez Naccache, Nadia Zitouna, Salwa Zehdi-Azouzi, İsmai̇l Bayyi̇ği̇t, Hijran Rafiyeva Latif, Maha Mezghani-Khemakhem, Hedia Bourguiba
Characterization And Bioremediation Potential Of Heavy-Metal Resistant Bacteria Isolated From Agricultural Soil, Kheira Dahnoun, Fatima Djadouni, Badiaa Essghaier, Chahnez Naccache, Nadia Zitouna, Salwa Zehdi-Azouzi, İsmai̇l Bayyi̇ği̇t, Hijran Rafiyeva Latif, Maha Mezghani-Khemakhem, Hedia Bourguiba
Turkish Journal of Agriculture and Forestry
Heavy metal pollution is a major environmental issue that has a negative impact on soil quality and food security. As a result, heavy metal removal or remediation from hazardous sites has become mandatory. Bioremediation based on microorganisms is a promising method to remediate heavy metal-contaminated areas due to its eco-friendly, cost-effective, and highly efficient characteristics. This study aimed to isolate, identify and characterize rhizospheric bacteria able to resist, reduce, and detoxify heavy metals (chromium [Cr], nickel [Ni], and aluminum [Al]) from agricultural soil. Two isolates were chosen due to their high level of heavy metal resistance and could serve as …
Biostimulant-Mediated Cellular Repair By Improving Antioxidant Dynamics And Osmoregulation Against Metal Stress In Canola, Hina Kanwal, Iram Shoaib, Ali Noman, Muhammad Faisal Maqsood, Rashda Naheed, Omar Mahmoud Alzoubi, Mohamed Hashem, Rehab Elnour, Fahad Mohammed Alzuaibr, Noreen Khalid, Muhammad Kashif Irshad, Muhammad Aqeel
Biostimulant-Mediated Cellular Repair By Improving Antioxidant Dynamics And Osmoregulation Against Metal Stress In Canola, Hina Kanwal, Iram Shoaib, Ali Noman, Muhammad Faisal Maqsood, Rashda Naheed, Omar Mahmoud Alzoubi, Mohamed Hashem, Rehab Elnour, Fahad Mohammed Alzuaibr, Noreen Khalid, Muhammad Kashif Irshad, Muhammad Aqeel
Turkish Journal of Agriculture and Forestry
Global crop yield and growth are severely impacted by hazardous heavy metal contamination of the soil and water. This study examined the effects on a range of physiological, biochemical, and morphological parameters of two canola (Brassica napus L.) cultivars, Punjab (V1) and Super (V2), when they were subjected to three different levels of cadmium (Cd) stress (0, 1.5, and 2.25 mM) and foliar application of biostimulant, i.e., Moringa leaf extract (MLE). Plants in V1 (Punjab) collect more Cd in both their aerial and subterranean sections than in V2 (Super).The morphological and physiological indicators showed a substantial (p < 0.05) deterioration as a result of the Cd buildup. Ascorbic acid and malondialdehyde (MDA) and hydrogen peroxide (H2O2) were considerably (p < 0.05) elevated under Cd stress. V1 has considerably higher H2O2 values than Super (V2), which suggests that oxidative stress levels there are higher. Additionally, the activity of some antioxidant enzymes, such as catalase and peroxidase (65 and 40%, respectively), were reduced by a higher concentration of Cd (2.25 mM). V2 demonstrated stronger antioxidant defence mechanisms than V1, as seen by a 115% rise in POD activity, a 70% increase in shoot fresh weight, and a 49% increase in amino acids following MLE spray. Despite this, the V2 was still able to withstand Cd. Under Cd stress, foliar treatment of MLE increased both kinds' yield, growth, biochemical, and physiological characteristics. The findings indicated that applying MLE foliar spray can improve crop productivity and lessen the impacts of metals on B. napus L.
Qtl Mapping For Fatty Acid Composition In Olive Oil Using A High-Density Genetic Map Based On Snp Markers, Ali̇ Can Kaya, Meryem İpek, Ahmet İpek, Mehmet Ali̇ Gündoğdu, Nesri̇n Aktepe Tangu, Sevi̇n Teoman Duran, Murat Şeker, Mustafa Akbulut
Qtl Mapping For Fatty Acid Composition In Olive Oil Using A High-Density Genetic Map Based On Snp Markers, Ali̇ Can Kaya, Meryem İpek, Ahmet İpek, Mehmet Ali̇ Gündoğdu, Nesri̇n Aktepe Tangu, Sevi̇n Teoman Duran, Murat Şeker, Mustafa Akbulut
Turkish Journal of Agriculture and Forestry
Olive (Olea europaea L.) is an evergreen tree species that grows naturally in regions with Mediterranean climates. Its oil and fruits are commercially valuable. Olive oil contains high levels of omega-9 (oleic acid). Because the high percentage of oleic acid makes olive oil deterioration-resistant, the development of olive varieties containing high oleic acid is one of the major goals of olive breeding programs. Therefore, this study aimed to determine quantitative trait loci (QTL) affecting fatty acid composition of olive oil. Thus, early selection of olive genotypes with a high oleic acid content can be possible. For the determination of QTLs …
Legal Regime Of The Application Process For Gmo Products In Türkiye, Ünal Yildiz, Özgür Temi̇z, Kami̇l Hali̇loğlu, Nesri̇n Yildiz
Legal Regime Of The Application Process For Gmo Products In Türkiye, Ünal Yildiz, Özgür Temi̇z, Kami̇l Hali̇loğlu, Nesri̇n Yildiz
Turkish Journal of Agriculture and Forestry
In Turkiye, in accordance with EU harmonization laws, Biosafety Act No. 5977 entered into force on 18.09.2010. The basic legislation regarding the application process is composed of the Biosafety Act, Regulations on Genetically Modified Organisms and Their Products, and Regulations on Working Procedures and Principles of Biosafety Board and Committees. Biosafety legislation foresees a special application procedure for GMO food, food products, feed, and other products. The application regulated in the Biosafety Law is a special administrative procedure in nature. The primary objective of this study is to explain the legal regime of this application procedure. While explaining this issue, …
Determination Of Dry Matter Yield, Some Morphological Characteristics And Rootworm Infestation In Local Sainfoin Populations, Zeynep Gül, Mustafa Tan
Determination Of Dry Matter Yield, Some Morphological Characteristics And Rootworm Infestation In Local Sainfoin Populations, Zeynep Gül, Mustafa Tan
Turkish Journal of Agriculture and Forestry
Sainfoin (Onobrychis sativa L.) is a valuable forage plant which is drought resistant and has good nutritional value. However, for a long time, some rootworms that damage sainfoin have caused a decrease in its cultivation areas. As a result of many studies, a variety resistant to rootworms has not been developed yet. Local populations are of great importance in the studies to develop resistant varieties. This research was planned to determine the hay yield, forage quality, morphological characteristics and rootworm infestation of local sainfoin genotypes from 6 different villages in Erzurum province of Türkiye. The research was established in 2017 …
Quantitative Variation Of Phenolic Compounds In Different Tissues Of Pistachio(Pistacia Vera L. Cv. Uzun) Associated With Alternate Bearing, Müjgan Güney, Muhammet Ali̇ Gündeşli̇, Murat Güney, Nesi̇be Ebru Kafkas, Sali̇h Kafkas, Zeynep Ergün
Quantitative Variation Of Phenolic Compounds In Different Tissues Of Pistachio(Pistacia Vera L. Cv. Uzun) Associated With Alternate Bearing, Müjgan Güney, Muhammet Ali̇ Gündeşli̇, Murat Güney, Nesi̇be Ebru Kafkas, Sali̇h Kafkas, Zeynep Ergün
Turkish Journal of Agriculture and Forestry
Alternate bearing is a common challenge in horticultural plants, leading to irregular yield in successive years. The potentialrole of phenolic compounds in regulating this phenomenon, however, is not well understood. This study aimed to investigate thepotential role of phenolic compounds in alternate bearing in pistachio trees by analysing samples from different parts of the “Uzun”cultivar over two consecutive years. Seven phenolic compounds (gallic acid, p-coumaric acid, caffeic acid, ferulic acid, chlorogenic acid,catechin, and quercetin) were analysed using high-performance liquid chromatography at 10-day intervals. Significant variations wereobserved in the levels of certain phenolic compounds between “ON” and “OFF” years, suggesting a …
Developing Micropropagation Protocol For Black Mulberry (Morus Nigra L.), Merve Özkul, Nevzat Sevgi̇n, Mehmet Özkul, Neelam Prabha Negi, Sadi̇ye Peral Eyduran, Bi̇rsen Yilmaz, Melekşen Akin
Developing Micropropagation Protocol For Black Mulberry (Morus Nigra L.), Merve Özkul, Nevzat Sevgi̇n, Mehmet Özkul, Neelam Prabha Negi, Sadi̇ye Peral Eyduran, Bi̇rsen Yilmaz, Melekşen Akin
Turkish Journal of Agriculture and Forestry
This study aims to develop a suitable micropropagation protocol for black mulberry, which cannot be easily clonally propagated like other mulberry species. Clonal propagation of this species is gaining importance due to its health benefits and utilization in pharmacology. The effects of culture media and cytokinin types on micropropagation of Morus nigra L. were investigated. Single-axillary bud explants grown on MS, DKW, and NRM containing 0.25 mg/l benzyl adenine (BA) plus 0.01 mg/l indole-3-butyric acid (IBA) were compared to cultures grown on NRM with thidiazuron, metaTopolin (mT) or BA at 1.25, 2.5, 5.0 or 7.5 mg/l plus 0.01 mg/l IBA. …
Biostimulation Effect On Crithmum Maritimum L. Root Development In Controlled Environment, Stefano Zenobi, Marco Fiorentini, Biagio Di Tella, Vesna Milanovic, Andera Marcelli, Luigi Ledda, Paola Antonia Deligios, Lucia Aquilanti, Roberto Orsini
Biostimulation Effect On Crithmum Maritimum L. Root Development In Controlled Environment, Stefano Zenobi, Marco Fiorentini, Biagio Di Tella, Vesna Milanovic, Andera Marcelli, Luigi Ledda, Paola Antonia Deligios, Lucia Aquilanti, Roberto Orsini
Turkish Journal of Agriculture and Forestry
Biostimulants can find application in sustainable agriculture contexts as they are regarded as inputs with minimal environmental impact. Microbial inoculants, when applied to the root systems of certain plant species, confer physiological and morphological benefits to the entire plant. In the present study, we focused on some morphometric parameters of the root system of two Crithmum maritimum L. spontaneous populations (Mediterranean and Atlantic). We compared the effects of two different (for number of strains) biostimulants on the weight, length, diameter and number of tips on the root system. The experiment was conducted within two types of controlled environments: i) an …
Evaluation Of Turkish Shallot Genetic Resources For Morphological, Biochemical And Sensory Properties, Gülay Beşi̇rli̇
Evaluation Of Turkish Shallot Genetic Resources For Morphological, Biochemical And Sensory Properties, Gülay Beşi̇rli̇
Turkish Journal of Agriculture and Forestry
Shallots, a subspecies of onion, are considered the gourmet onion and are preferred especially in French and Asian cooking. Its unique taste and aroma especially being caramelized through heat treatment increases its importance for boutique restaurants and niche tables. This study examined the morphological, biochemical, and sensory properties of seven generatively (GMSY-2, GMSY-3, GMSY-4, GMSY-5, GMSY-6, GMSY-7, GMSY-8) and one vegetatively propagated (GMSY-1) shallot genotypes in 2021 and 2022. Sixteen morphological and fifteen biometric features of UPOV were used in characterization. Total phenolic content, total antioxidant capacity, and total monomeric anthocyanin and pyruvic acid contents were determined as biochemical markers. …
Identification And Extraction Method Of Fragrant Pear Based On Image Detection Under Internet Of Things Applications, Peng Zhou, Huan Wnag, Pengwei Zhang, Shengzhi Liu, Wei Cehn, Weihang Zhao, Bingyu Cao
Identification And Extraction Method Of Fragrant Pear Based On Image Detection Under Internet Of Things Applications, Peng Zhou, Huan Wnag, Pengwei Zhang, Shengzhi Liu, Wei Cehn, Weihang Zhao, Bingyu Cao
Turkish Journal of Agriculture and Forestry
With the continuous development of society, agricultural production technology is also improving. Due to the continuous improvement of economic level, the quality of life has also put forward higher requirements, the quality of agricultural products has gradually received more people’s attention. In the picking and sorting process of traditional fragrant pear, the quality control process is not perfect, and the identification and extraction method is not mature enough. In the complex environment of insufficient light or shade of branches and leaves, the pear picking work cannot quickly and accurately locate the target fruit. Therefore, the traditional identification and extraction methods …
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
A New Approach: Ordinal Predictive Maintenance With Ensemble Binary Decomposition (Opmeb), Ozlem Ece Yurek, Derya Birant
A New Approach: Ordinal Predictive Maintenance With Ensemble Binary Decomposition (Opmeb), Ozlem Ece Yurek, Derya Birant
Turkish Journal of Electrical Engineering and Computer Sciences
Predictive maintenance (PdM), a fundamental element of modern industrial systems, employs machine learning to monitor equipment conditions, estimate failure probabilities, and optimize maintenance schedules. Its core objective is to enhance equipment reliability, extend lifespan, and minimize costs through data-driven insights by enabling efficient maintenance scheduling, reducing downtime, and optimizing resource allocation. In this paper, we propose a novel ordinal predictive maintenance with ensemble binary decomposition (OPMEB) method for the PdM domain, considering the hierarchical nature of class labels reflecting the machine's health status, including categories like healthy, low risk, moderate risk, and high risk. The proposed OPMEB method was validated …
Enrichment Of Turkish Question Answering Systems Using Knowledge Graphs, Okan Çi̇ftçi̇, Fati̇h Soygazi̇, Selma Teki̇r
Enrichment Of Turkish Question Answering Systems Using Knowledge Graphs, Okan Çi̇ftçi̇, Fati̇h Soygazi̇, Selma Teki̇r
Turkish Journal of Electrical Engineering and Computer Sciences
Recent capabilities of large language models (LLMs) have transformed many tasks in Natural Language Processing (NLP), including question answering. The state-of-the-art systems do an excellent job of responding in a relevant, persuasive way but cannot guarantee factuality. Knowledge graphs, representing facts as triplets, can be valuable for avoiding errors and inconsistencies with real-world facts. This work introduces a knowledge graph-based approach to Turkish question answering. The proposed approach aims to develop a methodology capable of drawing inferences from a knowledge graph to answer complex multihop questions. We construct the Beyazperde Movie Knowledge Graph (BPMovieKG) and the Turkish Movie Question Answering …
Ensemble Learning For Accurate Prediction Of Heart Sounds Using Gammatonegram Images, Sinam Ashinikumar Singh, Sinam Ajitkumar Singh, Aheibam Dinamani Singh
Ensemble Learning For Accurate Prediction Of Heart Sounds Using Gammatonegram Images, Sinam Ashinikumar Singh, Sinam Ajitkumar Singh, Aheibam Dinamani Singh
Turkish Journal of Electrical Engineering and Computer Sciences
The analysis of heart sound signals constitutes a pivotal domain in healthcare, with the prediction of imbalanced heart sounds offering critical diagnostic insights. However, the inherent diversity in cardiac sound patterns presents a substantial challenge in predicting imbalanced signals. Many scientific disciplines have focused a great deal of emphasis on the problem of class inequality. We introduce an ensemble learning approach employing a convolutional neural network model-based deep learning algorithm to effectively tackle the challenges associated with predicting imbalanced heart sound signals. We use a Gammatone filter bank to extract relevant features from the heard sound signal. Our approach leverages …
Detection And Classification Of Unauthorized Use Of Irrigation Motors In Agricultural Irrigation, Önder Ci̇velek, Sedat Görmüş, Hali̇l İbrahi̇m Okumuş, Orhan Gazi̇ Kederoglu
Detection And Classification Of Unauthorized Use Of Irrigation Motors In Agricultural Irrigation, Önder Ci̇velek, Sedat Görmüş, Hali̇l İbrahi̇m Okumuş, Orhan Gazi̇ Kederoglu
Turkish Journal of Electrical Engineering and Computer Sciences
The decarbonisation of electricity generation requires the real-time monitoring and control of grid components in order to efficiently and timely dispatch demand. This highly automated system, known as the Smart Grid, relies on smart or sensor-equipped distribution network components to optimise energy flow and minimise losses. However, energy theft, a major obstacle to efficient resource utilisation, poses a significant challenge to achieving this goal. This study proposes and evaluates a real-time telemetry and control system designed to mitigate energy theft in agricultural irrigation applications. The system increases energy efficiency by tracking the energy use in agricultural irrigation. The key challenge …
A New Dynamic Classifier Selection Method For Text Classification, İsmai̇l Terzi̇, Alper Kürşat Uysal
A New Dynamic Classifier Selection Method For Text Classification, İsmai̇l Terzi̇, Alper Kürşat Uysal
Turkish Journal of Electrical Engineering and Computer Sciences
The primary objective of employing multiple classifier systems (MCS) in pattern recognition is to enhance classification accuracy. Dynamic classifier selection (DCS) and dynamic ensemble selection (DES) are two purposeful forms of multiple classifier systems. While DES involves the selection of a classifier set followed by decision combination, DCS opts for the choice of a single competent classifier, eliminating the necessity for classifier combination. As a consequence, DCS methods exhibit superior efficiency in terms of processing time and memory usage compared to DES methods. Moreover, a substantial performance gap exists between the performance of Oracle and both DES and DCS methods. …