Celal Bayar Universitesi Fen Bilimleri Dergisi最新文献

Chemical Composition and Antibacterial Activities of Corylus avellana L. Bioproducts Grown in Giresun-Türkiye 绿枝香生物制品的化学成分及抑菌活性研究

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1346393

Mehmet Emin ŞEKER, Ayşegül ERDOĞAN, Emriye AY, Derya EFE, Rena HÜSEYİNOĞLU

{"title":"Chemical Composition and Antibacterial Activities of Corylus avellana L. Bioproducts Grown in Giresun-Türkiye","authors":"Mehmet Emin ŞEKER, Ayşegül ERDOĞAN, Emriye AY, Derya EFE, Rena HÜSEYİNOĞLU","doi":"10.18466/cbayarfbe.1346393","DOIUrl":"https://doi.org/10.18466/cbayarfbe.1346393","url":null,"abstract":"Hazelnut has become an important commercial product in recent years due to its worldwide applications in the pharmaceutical industry as well as in the confectionery and food industry. In addition, hazelnut shell is a waste material obtained after hazelnut harvest and mainly used as heating sources. However, its bioproducts are essentially a very important phytochemical source. In this study, the composition of phenolic compounds, carotenoids, tocopherols and fatty acids of different bioproducts of hazelnut plant were investigated. The highest phenolic compound content (2630.84 µg/g), and lutein amount (73.05 µg/g) were determined in green leafy cover. The major fatty acids were found to be as oleic acid (81.493%), linoleic acid (7.778%) and palmitic acid (6.408%), respectively. Total tocopherol concentration of hazelnut kernel was determined as 364.1 µg/g. In the present study, the antibacterial activity of hazelnut bioproducts was determined using eight pathogenic bacteria. They showed strong antimicrobial activity against the Gram (+) and Gram (-) bacteria which might be attributed to the rich phytochemical composition of hazelnut bioproducts. This work comprehensively summarized the chemical composition of hazelnut bioproducts and their antibacterial activity potential grown in Giresun-Türkiye region which had an important place in the global market.","PeriodicalId":9652,"journal":{"name":"Celal Bayar Universitesi Fen Bilimleri Dergisi","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136276616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Characterization of Polylactic Acid Based Nanofiber Loaded with Tangerine Peel (Citrus Unshiu) Essential Oil 陈皮精油负载聚乳酸基纳米纤维的制备与表征

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1333674

Tuğba GÜNGÖR ERTUĞRAL, Sevim AKÇURA

{"title":"Preparation and Characterization of Polylactic Acid Based Nanofiber Loaded with Tangerine Peel (Citrus Unshiu) Essential Oil","authors":"Tuğba GÜNGÖR ERTUĞRAL, Sevim AKÇURA","doi":"10.18466/cbayarfbe.1333674","DOIUrl":"https://doi.org/10.18466/cbayarfbe.1333674","url":null,"abstract":"Electrospinning method used in nanofiber production is an economical method applied with high voltage electricity.Essential oils obtained from natural sources have antioxidant, antimicrobial and antifungal properties and are preferred in the production of nanomaterials by electro-spinning method. In this study, tangerine peel (citrus unshiu) essential oil (TPEO) was obtained by hydro-distillation method. The major one of the 10 components of the extract detected by Gas Chromatography Mass Spectrometry (GS-MS) was D-Limonene (%77.45). The composite nanofiber was prepared with 25% TPEO and polylactic acid (PLA). Nanofibers were characterized by Scanning Electron Microscopy (SEM) and Thermogravimetric Analysis (TGA). According to the SEM results, it is seen that the essential oil is composited with prominent spheroidal structures in PLA nanofiber structure, and nanofiber diameter obtained is approximately 76.8 nm. Its decomposition temperature is about 320°C. Nanofibers obtained from tangerine peels and their antibacterial properties, can be recommended use for food preservation and medicine fields.","PeriodicalId":9652,"journal":{"name":"Celal Bayar Universitesi Fen Bilimleri Dergisi","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136279411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on the solutions of (3+1) conformal time derivative generalized q-deformed Sinh-Gordon equation (3+1)保形时间导数广义q-变形Sinh-Gordon方程解的研究

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1264314

Yeşim SAĞLAM ÖZKAN

引用次数: 0

Evaluation of Various Flexibility Resources in Power Systems 电力系统中各种柔性资源的评价

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1280545

Emir Kaan TUTUŞ, Nevzat ONAT

{"title":"Evaluation of Various Flexibility Resources in Power Systems","authors":"Emir Kaan TUTUŞ, Nevzat ONAT","doi":"10.18466/cbayarfbe.1280545","DOIUrl":"https://doi.org/10.18466/cbayarfbe.1280545","url":null,"abstract":"Variable Renewable Energy Resources (VRES), especially wind and solar power, are known for their intermittent, uncertain, and low-energy-density nature. The increasing adoption of these stochastic sources presents irregularity in the net load in the power system network; therefore, it poses a challenge to the reliable operation of power systems. Consequently, there's an increasing need for power system flexibility to cope with VRES-related challenges. Flexibility planning will therefore be a crucial aspect for power system management, particularly as the penetration of VRES continues to rise. To reach this objective, the diversification of flexibility options emerges as a promising solution. Various strategies are prominent in the literature for enhancing power system flexibility to adapt to VRES variability. These include the utilization of flexible generators, adjusting load profiles through demand-side management, integrating energy storage systems and electric vehicle batteries, developing grid infrastructure, using surplus energy for various daily applications (e.g., heating), and the implementing of curtailment practices. Demand-side management and energy storage, for example, offer valuable flexibility by allowing consumers to adjust their consumption patterns to electricity supply and demand fluctuations. Additionally, flexible generation technologies like gas turbines and combined heat and power systems provide rapid responses, aiding grid balance during high VRES output variability periods. Overall, this paper provides an overview of power system flexibility, exploring the various flexibility resources available to VRES-related challenges. Finally, this paper emphasizes the importance of continued innovation in developing new flexibility solutions to meet the growing demand for sustainable and reliable power systems.","PeriodicalId":9652,"journal":{"name":"Celal Bayar Universitesi Fen Bilimleri Dergisi","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136276609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of Pyrolysed Almond and Walnut Shells (PAS and PWS) for the Adsorption of Cationic Dye: Reusing Agro-Waste for Sustainable Development 利用热解杏仁和核桃壳(PAS和PWS)吸附阳离子染料:农业废弃物的再利用与可持续发展

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1310461

Gül KAYKIOĞLU, Nesli AYDIN

{"title":"Use of Pyrolysed Almond and Walnut Shells (PAS and PWS) for the Adsorption of Cationic Dye: Reusing Agro-Waste for Sustainable Development","authors":"Gül KAYKIOĞLU, Nesli AYDIN","doi":"10.18466/cbayarfbe.1310461","DOIUrl":"https://doi.org/10.18466/cbayarfbe.1310461","url":null,"abstract":"Agro-wastes are recognised as a carbon-rich source, which can be converted into value-added products in sustainable development. In this study, the effect of pH, contact time, initial concentration, and ionic strength were evaluated in Methylene Blue (MB) adsorption by using an activated carbon obtained from pyrolysed almond (PAS) and walnut shells (PWS). The characterisation of PAS and PWS was conducted by SEM-EDX, FT-IR and BET analysis. The removal efficiency of 6 mg/L initial MB concentration improved from 10.6% to 50.42% for PAS, when the adsorbent dose was increased from 0.5 g to 3.5 g in 1 L dye solution. It also improved from 14.8% to 48.7% for PWS, when the adsorbent dose was increased from 0.5 g to 3.5 g. The adsorption fits well with the Freundlich isotherm model and the second-order kinetic model is more favourable. In the adsorption experiments using PWS, 48% removal efficiency was obtained in the absence of NaCl. Depending on the increasing NaCl concentration, the removal efficiencies showed a decrease. 36% removal efficiency was obtained for PWS when 2500 mg/L NaCl was used. In the adsorption experiments using PAS, 40% removal efficiency was obtained in the absence of NaCl. When 500 mg/L NaCl was used, the maximum removal efficiency improved to 48%. However, with the increase in ionic strength, removal efficiencies decreased to approximately 39%. This study revealed that PAS and PWS could be used effectively instead of commercial activated carbon, which also provides an advantageous option from an economic point of view.","PeriodicalId":9652,"journal":{"name":"Celal Bayar Universitesi Fen Bilimleri Dergisi","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136271803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LC-MS/MS Analysis and Biological Activities of Methanol Extract from Sagina apetala Ard. 无瓣蒿甲醇提取物的LC-MS/MS分析及生物活性研究。

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1264511

Rabia Nur ÜN

引用次数: 0

Palladium/1,3-bis(ferrocenylmethy)imidazolinium chloride catalyst for Suzuki cross-coupling reactions 钯/1,3-双(二茂铁甲基)咪唑氯化铵铃木交叉偶联反应催化剂

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1261392

Mehmet GÜNALTAY, Hülya AVCI ÖZBEK, Funda DEMİRHAN

引用次数: 0

Modelling of the Process of Cooling the Battery of the Electric vehicles with Cabin Air-Conditioning System by means of LMS Amesim Programme 基于LMS Amesim软件的电动汽车车舱空调系统电池冷却过程建模

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1247445

Haluk GÜNEŞ

{"title":"Modelling of the Process of Cooling the Battery of the Electric vehicles with Cabin Air-Conditioning System by means of LMS Amesim Programme","authors":"Haluk GÜNEŞ","doi":"10.18466/cbayarfbe.1247445","DOIUrl":"https://doi.org/10.18466/cbayarfbe.1247445","url":null,"abstract":"In this study, a simulation on management of battery temperature, which is a significant problem for electric vehicles, has been made. Battery temperatures can reach up to 50 oC if not checked during quick charging and discharging processes. Such situation shortens the lifetime of battery and also increases the temperature inside the cabin. More importantly, they can be dangerous. LMS Amesim software and WLTC driving cycle have been used for the simulation. Three battery packages have been used in simulations. Temperature of the battery have been checked at three different ambient temperatures (25 oC, 30 oC, 35 oC). During the test, it has been enhanced to keep the battery temperature below 35 oC under all conditions. Air-conditioner of the vehicle has been used to cool the batteries. When the temperature increased, the air-conditioner automatically checked the operating cycle of the compressor and cooled the batteries by means of constant air flow. In conclusion, the simulation has kept the battery temperature at desired level at ambient temperatures of 25 oC and 30 oC. At ambient temperature of 35oC, battery temperature increased up to 35.2oC.","PeriodicalId":9652,"journal":{"name":"Celal Bayar Universitesi Fen Bilimleri Dergisi","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fenoxycarb Effects 7th instar Galleria mellonella Larvae by Triggering Extra Larval Stages 苯醚威通过触发额外幼虫期对7龄大黄蜂幼虫的影响

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2021-05-03 DOI: 10.18466/CBAYARFBE.823562

Esen Poyraz Tinartaş, Ebru Goncu, K. Koç

引用次数: 0

Frame Detection with Deep Learning 基于深度学习的帧检测

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2021-04-21 DOI: 10.18466/CBAYARFBE.693942

Metehan Yildirim, R. Sokullu

引用次数: 0