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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1346393
Mehmet Emin ŞEKER, Ayşegül ERDOĞAN, Emriye AY, Derya EFE, Rena HÜSEYİNOĞLU
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.
榛子近年来已成为一种重要的商业产品,因为它在制药工业以及糖果和食品工业中得到了广泛的应用。另外,榛子壳是榛子收获后获得的废弃物,主要用作热源。然而,其生物制品本质上是一种非常重要的植物化学来源。研究了榛子植物不同生物制品中酚类化合物、类胡萝卜素、生育酚和脂肪酸的组成。绿叶盖中酚类化合物含量最高(2630.84µg/g),叶黄素含量最高(73.05µg/g)。主要脂肪酸为油酸(81.493%)、亚油酸(7.778%)和棕榈酸(6.408%)。测定榛子仁总生育酚浓度为364.1µg/g。本研究采用8种病原菌对榛子生物制品进行抑菌活性测定。它们对革兰氏(+)和革兰氏(-)细菌具有较强的抑菌活性,这可能与榛子生物制品中丰富的植物化学成分有关。本文全面综述了在全球市场占有重要地位的giresun - trkiye地区生长的榛子生物制品的化学成分及其抗菌活性潜力。
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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1333674
Tuğba GÜNGÖR ERTUĞRAL, Sevim AKÇURA
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.
静电纺丝法是一种在高压条件下生产纳米纤维的经济方法。从天然来源获得的精油具有抗氧化、抗菌和抗真菌的特性,在电纺丝法生产纳米材料中是首选的。本研究采用水蒸气蒸馏法提取陈皮精油。气相色谱-质谱法(GS-MS)检测到的10种成分中d -柠檬烯含量最高,占比77.45。以25% TPEO和聚乳酸(PLA)为原料制备复合纳米纤维。采用扫描电镜(SEM)和热重分析(TGA)对纳米纤维进行了表征。SEM结果表明,精油在聚乳酸纳米纤维结构中复合出明显的球状结构,得到的纳米纤维直径约为76.8 nm。其分解温度约为320℃。从陈皮中提取的纳米纤维及其抗菌性能,可推荐用于食品保鲜和医药领域。
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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1264314
Yeşim SAĞLAM ÖZKAN
This article is about examining the solutions of the (3+1) conformal time derivative generalized q-deformed Sinh-Gordon equation. The integration method used to reach the solutions of the equation is the generalized exponential rational function method. In this article, the process of examining the solutions goes step by step, first the basic steps of the proposed method are given, then the reduction of the equation is examined, and then the solutions are obtained by applying the method. To perceive the physical phenomena, 2D and 3D graphical patterns of some of solutions obtained in this study are plotted by using computer programming. The worked-out solutions ascertained that the suggested method is effectual, simple and direct.
本文研究了(3+1)保形时间导数广义q-变形Sinh-Gordon方程的解。求解该方程的积分方法是广义指数有理函数法。在本文中,检验解的过程是一步一步地进行的,首先给出了该方法的基本步骤,然后检验了方程的约简,最后应用该方法得到了解。为了感知物理现象,利用计算机编程绘制了部分解的二维和三维图形。计算结果表明,该方法简单、直接、有效。
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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1280545
Emir Kaan TUTUŞ, Nevzat ONAT
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.
可变可再生能源(VRES),特别是风能和太阳能,以其间歇性、不确定性和低能量密度而闻名。随着这些随机源的采用越来越多,电网的净负荷呈现出不规则性;因此,对电力系统的可靠运行提出了挑战。因此,越来越需要电力系统的灵活性来应对vres相关的挑战。因此,灵活性规划将成为电力系统管理的一个关键方面,特别是随着VRES的不断普及。为了实现这一目标,灵活性选择的多样化成为一个有希望的解决方案。为了提高电力系统的灵活性以适应VRES的可变性,各种策略在文献中都很突出。这些措施包括利用灵活发电机,通过需求侧管理调整负荷概况,整合能源储存系统和电动汽车电池,发展电网基础设施,将剩余能源用于各种日常应用(例如供暖),以及实施削减做法。例如,需求侧管理和能源储存提供了宝贵的灵活性,允许消费者根据电力供应和需求波动调整其消费模式。此外,灵活的发电技术,如燃气轮机和热电联产系统,提供快速响应,帮助电网在高VRES输出变化期间保持平衡。总体而言,本文概述了电力系统的灵活性,探讨了可用于vres相关挑战的各种灵活性资源。最后,本文强调了在开发新的灵活性解决方案方面不断创新的重要性,以满足对可持续和可靠的电力系统日益增长的需求。
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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1310461
Gül KAYKIOĞLU, Nesli AYDIN
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.
农业废弃物被认为是富含碳的来源,可以在可持续发展中转化为增值产品。本研究考察了pH、接触时间、初始浓度和离子强度对亚甲基蓝(MB)吸附性能的影响。通过SEM-EDX, FT-IR和BET分析对PAS和PWS进行了表征。在1 L染料溶液中,当吸附剂用量从0.5 g增加到3.5 g时,6 mg/L初始浓度下PAS对MB的去除率从10.6%提高到50.42%。当吸附剂用量从0.5 g增加到3.5 g时,PWS的吸附率也从14.8%提高到48.7%。吸附过程符合Freundlich等温线模型,二级动力学模型更为有利。在无NaCl的情况下,PWS的去除率可达48%。随着NaCl浓度的增加,去除率呈下降趋势。当NaCl用量为2500 mg/L时,对PWS的去除率为36%。在无NaCl的情况下,PAS的去除率可达40%。当NaCl用量为500 mg/L时,最大去除率提高到48%。然而,随着离子强度的增加,去除效率下降到约39%。该研究表明,PAS和PWS可以有效地替代商业活性炭,从经济角度来看,这也是一种有利的选择。
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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。
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1264511
Rabia Nur ÜN
This is the first study on the investigation of phenolic compounds of methanol extract (ME) of Sagina apetala and examination of its cell-based antioxidant and antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa. The determination of phenolic compounds of ME was performed by LC-MS/MS and 25 main compounds were identified. For the cell-based antioxidant activity of ME, Vero cell line (Cercopithecus aethiops kidney epithelial, Monolayer) was used as the model cell line and ME was showed 61.22% cell viability. ME, also showed insignificant antibacterial activity against both gram-positive and gram-negative bacteria. In conclusion, this study in the species provides the basic data for future studies for the species.
本文首次对无花瓣蒿甲醇提取物(ME)的酚类化合物进行了研究,并对其抗金黄色葡萄球菌和铜绿假单胞菌的细胞抗氧化和抗菌活性进行了研究。采用液相色谱-质谱联用(LC-MS/MS)法对ME中酚类化合物进行了测定,鉴定出25种主要化合物。以Vero细胞系(Cercopithecus aethiops kidney epithelial, Monolayer)为模型细胞系,ME的细胞存活率为61.22%。ME对革兰氏阳性菌和革兰氏阴性菌的抑菌活性均不显著。本研究为该物种的进一步研究提供了基础资料。
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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1261392
Mehmet GÜNALTAY, Hülya AVCI ÖZBEK, Funda DEMİRHAN
We describe here the first results of catalytic performance of in situ prepared [Pd(O2CCH3)2] / 1,3-bis(ferrocenylmethy)imidazolinium chloride involving a saturated imidazole ring were successfully employed to Suzuki cross-coupling reactions of different aryl bromides (bromobenzene, 2-bromobenzonitrile, 2-bromotoluene, p-bromobenzaldehyde, p-bromoacetophenone, p-bromoanisole, p-bromotoluene and p-bromobenzotrifluoride) with phenylboronic acid under the optimum conditions. Optimum conditions were choosed, as 24 h, 80 oC, K2CO3 as base, dioxane as solvent, 1,3-bis(ferrocenylmethy)imidazolinium chloride as auxiliary ligand. Under these optimum conditions, 2- bromobenzonitrile, p-bromoacetophenone and p- bromobenzaldehyde react with phenyl boronic acid in moderate yields 57%, 50%, and 46% respectively. Catalytic experiments showed that [Pd(O2CCH3)2] / 1,3-bis(ferrocenylmethy)imidazolinium chloride catalytic system was moderately effficent in the Suzuki cross coupling reaction of aryl bromides in dioxane.
本文首次将原位制备的[Pd(O2CCH3)2] / 1,3-二茂铁甲基咪唑氯胺在饱和咪唑环上催化不同芳基溴(溴苯、2-溴苯腈、2-溴甲苯、对溴苯甲醛、对溴苯乙酮、对溴苯甲醚、对溴甲苯和对溴苯三氟)与苯硼酸在最佳条件下的铃木交联反应的催化性能进行了研究。选择的最佳条件为:24 h, 80℃,K2CO3为碱,二氧六烷为溶剂,1,3-二(二茂铁甲基)咪唑啉为辅助配体。在此条件下,2-溴苯腈、对溴苯乙酮和对溴苯甲醛与苯硼酸的反应收率分别为57%、50%和46%。催化实验表明,[Pd(O2CCH3)2] / 1,3-双(二茂铁基甲基)咪唑氯化盐催化体系对芳基溴在二恶烷中的铃木交联反应具有中等效率。
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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
Pub Date : 2023-09-30 DOI: 10.18466/cbayarfbe.1247445
Haluk GÜNEŞ
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.
本文针对电动汽车电池温度管理这一重要问题进行了仿真研究。如果在快速充放电过程中不进行检查,电池温度最高可达50℃。这种情况缩短了电池的使用寿命,也增加了机舱内的温度。更重要的是,它们可能很危险。采用LMS Amesim软件和WLTC驱动循环进行仿真。模拟中使用了三种电池组。在三种不同的环境温度(25℃,30℃,35℃)下检查电池的温度。在测试过程中,它已得到增强,在所有条件下保持电池温度低于35℃。车辆的空调已经被用来冷却电池。当温度升高时,空调自动检查压缩机的运行周期,并通过恒定气流的方式冷却电池。综上所述,在25℃和30℃的环境温度下,模拟使电池温度保持在期望的水平。在环境温度为35oC时,电池温度升高至35.2oC。
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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
Pub Date : 2021-05-03 DOI: 10.18466/CBAYARFBE.823562
Esen Poyraz Tinartaş, Ebru Goncu, K. Koç
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引用次数: 0
Frame Detection with Deep Learning 基于深度学习的帧检测
Pub Date : 2021-04-21 DOI: 10.18466/CBAYARFBE.693942
Metehan Yildirim, R. Sokullu
{"title":"Frame Detection with Deep Learning","authors":"Metehan Yildirim, R. Sokullu","doi":"10.18466/CBAYARFBE.693942","DOIUrl":"https://doi.org/10.18466/CBAYARFBE.693942","url":null,"abstract":"","PeriodicalId":9652,"journal":{"name":"Celal Bayar Universitesi Fen Bilimleri Dergisi","volume":"140 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77960762","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
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Celal Bayar Universitesi Fen Bilimleri Dergisi
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