Acta Natura et Scientia最新文献

{"title":"The Effect of Using Wheat Protein as a Protein Source on Some Blood Parameters in Juvenile Sea Bass (Dicentrarchus labrax) Feeds","authors":"S. Akin, M. Bulut","doi":"10.29329/actanatsci.2022.351.08","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.08","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"IA-16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126557625","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}

{"title":"Calculation of Residual Stress in Ships by the Method of the Fresnel Approximation","authors":"Semi̇h Öztürk, M. Kurt","doi":"10.29329/actanatsci.2022.351.07","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.07","url":null,"abstract":"C T Predictive maintenance techniques are developed to help determine the condition of in-service equipment in order to predict when maintenance should be performed. There is a need for cost-performance effective approaches and methods for predictive maintenance that can make non-destructive on-site measurements to predict residual stress-induced critical faults in large metal structures, such as ships. In this study, an optical method based on the calculation of the non-destructive surface magnetic permeability coefficient is proposed for monitoring the residual stress distribution in AISI4040 and DUPLEX materials. In our proposed new method for determining theoretically the residual stress at the joint site of large plates in ships, the Lorentz-Drude model and the Fresnel approximation were used. Our results show that the new optical technique proposed in this study is sufficient and thriving for the determination of residual stresses in large","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114178626","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}

{"title":"Length-Weight and Length-Length Relationships of the Scorpaena Species (Actinopteri: Scorpaenidae) in Izmir Bay (Aegean Sea of Turkey)","authors":"B. Bayhan, B. Taylan, O. Heral","doi":"10.29329/actanatsci.2022.351.06","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.06","url":null,"abstract":"C T In this study, 173 specimens of Scorpaena porcus (n=50), Scorpaena elongata (n=20), Scorpaena scrofa (n=101 ), Scorpaena notata (n=2) were obtained from commercial fishermen in the Aegean Sea between 2017 and 2019. The length-weight relationships were determined for S. porcus, S. scrofa and S. elongata as W=0.0119TL 3.182 , W=0.0176TL 3.004 and W=0.0656TL 2.579 , respectively. Negative allometry was found for S. scrofa and S. elongate , whereas positive allometry was present for S. porcus. However, with less than 5 individuals S. notata showed maximum, minimum, and mean total length and weight values. S. notata (2 individuals) had a mean total length and weight of 15.7-16.6 cm and 72.31-93.26 g. The results also demonstrated that the length-length relationships were strongly correlated for all Scorpaena species","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134578524","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}

{"title":"Determination of Antimicrobial Activities of Essential Oils of Different Thyme Species Grown in Çanakkale Conditions","authors":"Seniiha Ruken Pirinççioğlu, B. Izci","doi":"10.29329/actanatsci.2022.351.05","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.05","url":null,"abstract":"Turkey is one of the leading countries in the trade of medicinal and aromatic plants due to its geography, and while exporting many medicinal plants, it also imports many plants. Thyme is often used as a spice in meat, fish and many other dishes due to its aromatic properties. It is a scientific fact that the essential oils in thyme have a strong antimicrobial effect. Thymol, which gives the distinctive smell of thyme, is an advanced antimicrobial agent. For this reason, it is recommended by many scientists to use thyme in the preservation of ready-made foods and disinfection of foods. It is an important plant for the country's economy, as it is an important medicinal aromatic plant and meets a large part of the thyme used in the world. Thyme, which is obtained by collecting from nature and cultivating in our country, has been an important research topic for scientists and many positive results have been obtained and continue to be achieved. This research was carried out at Çanakkale Onsekiz Mart University Faculty of Agriculture in 2021 in order to reveal the effect of essential oils obtained from 3 different thyme grown in Çanakkale conditions on 4 different bacteria. As research material, essential oils of Izmir thyme (Origanum onites), Istanbul thyme (Origanum vulgare) and medical thyme (Thymus vulgaris) were obtained by hydro-distillation method, and the anti-bacterial activities of these essential oils were determined against the determined bacteria Pseudomonas aeruginosa, Staphylococcus aureus, Enterobacter cloacaurmicium, Salmonella typhimurium. The antimicrobial activities of essential oils were determined by the disc diffusion method. As a result, according to the data obtained from all thyme essential oils, while all of them showed an antimicrobial effect on bacteria, the most antimicrobial activity was seen in O. onites and O. vulgare essential oils, while the least antimicrobial activity was seen in T. vulgaris essential oil. It showed the best activity in Origanum vulgare, especially on S. aureus (42 mm) and S. typhimurium (39 mm) bacteria. In the study, T. vulgaris had low activity against P. aeruginosa with an inhibition diameter of 19 mm. Pirinççioğlu & İzci (2022) Acta Natura et Scientia 3(1), 44-50 45 Çanakkale Koşullarında Yetişen Farklı Kekik Türlerinin Esansiyel Yağlarının Antimikrobiyal Aktivitelerinin Belirlenmesi M A K A L E B İ L G İ S İ Makale Geçmişi Geliş: 10.01.2022 Düzeltme: 18.04.2022 Kabul: 18.04.2022 Çevrimiçi Yayımlanma: 08.06.2022 Anahtar Kelimeler: Kekik Thymus Origanum Esansiyel yağ Antimikrobiyal Bakteri Ö Z E T Türkiye bulunduğu coğrafya itibariyle tıbbi ve aromatik bitkilerin ticaretinde dünyada söz sahibi ülkelerinden birisi olup, birçok tıbbi bitkinin ihracatını yaparken, beraberinde birçok bitkinin de ithalatını gerçekleştirmektedir. Kekik genellikle aromatik özelliklerinden dolayı et, balık ve diğer birçok yemekte baharat olarak kullanılmaktadır. Kekikte bulunan esansiyel yağların güçlü antimikrobiyal ","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114314701","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}

{"title":"Age and Growth Parameters of African Catfish (Clarias gariepinus Burchell, 1822) From Asi River, Turkey","authors":"E. Şimşek, Zeynel Abi̇di̇n Gözler, O. Samsun","doi":"10.29329/actanatsci.2022.351.04","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.04","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124385250","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}

{"title":"First Observations on the Stomach Contents of Devil Firefish, Pterois miles (Bennett, 1828) in the Gulf of Antalya, Turkey","authors":"Raziye Tanrıverdi, M. Gökoğlu, J. Korun","doi":"10.29329/actanatsci.2022.351.03","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.03","url":null,"abstract":"C T The present study examined stomach contents of 35 individuals of Pterois miles (Bennett, 1828) captured using scuba diving gears in Antalya Gulf. Total length and total weight in the specimens of P. miles collected from the Gulf of Antalya were 13.1-35.2 c m (mean±SD; 19.98±4.40) and 36.88 - 456.6 g (mean±SD; 103.82±91.29), respectively. The dominant prey were fish (IFO=106.67%, IP=59.38%) and the rest were crustaceans (IFO=53.33%, IP=40.63%). It was determined that P. miles was carnivorous and predominantly piscivorous. This study is the first to show how kind of consumption preys P. miles obtained from the Gulf of Antalya. The result of this study strengthens the existing knowledge on the consumption preys of devil firefish in the eastern Mediterranean. The distribution of this species continues in the Turkish Seas. The fishery and consumption of lionfish should be improved. The development of a lionfish fishery could provide a management tool to ameliorate impacts to coastal ecosystems of the","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124421770","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}

{"title":"Asymmetric Reflection of Shocks in Baltic Dry Index to Istanbul Freight Index","authors":"Ayhan Salar","doi":"10.29329/actanatsci.2022.351.02","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.02","url":null,"abstract":"Since the maritime freight markets have inelastic supply structures in the short run, freight is considered an indicator of trade volume. Freight rates can rise rapidly when fleet utilization is high, as supply, which does not increase in the short run due to time of ship building, cannot respond to increases in demand. In this sense, the relationships between the relevant freight indices can be examined in order to determine the regional reflections of global commercial developments. The aim of this study is to examine the effects of the shocks in Baltic Dry Index (BDI), which is an indicator of dry bulk trade in the global sense and considered as a leading indicator of the world economy by many researchers, on Istanbul Freight Index (ISTFIX), which is an indicator of trade in the Mediterranean and Aegean in the regional sense. The dataset covers the period between 31.12.2007 and 19.02.2018, and consists of 524 weekly observations. Asymmetric causality test is used in order to reveal relationship between variables. According to the findings, a significant causality relationship was determined only from negative shocks in BDI to negative shocks in ISTFIX. This situation shows that the contraction in global trade is immediately reflected in the ISTFIX region, while the expansion in trade is not immediately reflected.","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130509787","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}

{"title":"An Important Forage Source for Animals: Small Grain Pastures","authors":"A. Gökkuş, Hülya Hanoğlu Oral","doi":"10.29329/actanatsci.2022.351.01","DOIUrl":"https://doi.org/10.29329/actanatsci.2022.351.01","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132306130","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}

{"title":"Fish Consumption Preferences and Habits in Babaeski and Demirköy Districts of Kırklareli","authors":"Serkan Tozakçı, M. Bulut","doi":"10.29329/actanatsci.2021.350.12","DOIUrl":"https://doi.org/10.29329/actanatsci.2021.350.12","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130968097","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}

{"title":"Effects of Annual Grass with the Mixtures of Legume on Agronomic Growth of Plants","authors":"F. Alatürk, A. Gökkuş, Baboo Ali","doi":"10.29329/actanatsci.2021.350.11","DOIUrl":"https://doi.org/10.29329/actanatsci.2021.350.11","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133888117","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}