{"title":"Some Microbiological Properties in Soil Samples Taken from Maize Grown Fields in Sanliurfa","authors":"Ç. Küçük, C. Cevheri","doi":"10.29002/ASUJSE.316782","DOIUrl":"https://doi.org/10.29002/ASUJSE.316782","url":null,"abstract":"Bu calismanin amaci, Şanliurfa’da misir tarimi yapilan tarlalardan alinan toprak orneklerinde bazi mikrobiyal ozelliklerin belirlenmesidir. Ayrica bu topraklarin bazi fiziko-kimyasal ozellikleri incelenmistir. Toprak ornekleri 0-20 cm derinliginden alinmistir. Topraklarin mikrobiyal biyomas karbon icerikleri 98.2-198.5 mg C/g kuru toprak arasinda degisiklik gostermistir. Toprak orneklerinde ureaz, katalaz, dehidrogenaz, alkalin fosfataz, β-glukosidaz enzim aktiviteleri calisilmistir. Incelenen orneklerde enzim aktiviteleri farklilik gostermistir. Incelenen toprak ozellikleri arasinda pozitif ve negatif korelasyon belirlenmistir.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82082547","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":"Antimicrobial and Antioxidant Evaluation of Fruit Extract from Cornus mas L.","authors":"D. Yiğit","doi":"10.29002/ASUJSE.329856","DOIUrl":"https://doi.org/10.29002/ASUJSE.329856","url":null,"abstract":"In this present study, water and methanol extracts of Cornelian cherry fruits (Cornus mas L.) were studied for evaluating of antioxidant and antimicrobial properties. The antioxidant properties were evaluated by determination of 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability and lipid peroxidation inhibition activity. Also total phenolic contents of the extracts were detected by Folin method. The extracts of the fruits have antioxidant potential. The DPPH radical scavenging activity was higher in water extract (36.6 %) than the methanol extract (30.6 %). Unlike, methanol extract of fruits have more activity (18.9 %) than water extract (16.7 %), also with higher phenolic compound contents. Antimicrobial activities of above extracts were also tested against 93 clinical isolates of human pathogenic strains belonging to 5 bacteria (Entorobacter aerogenes, Escherichia coli, Proteus mirabilis, Pseudomonas aeroginosa, Staphylococcus aureus) and 5 yeast species (Candida albicans, Candida glabrata, Candida krusei, Candida parapisilosis, Candida tropicalis) by diskdiffusion method. The results showed cornelian cherries are potentially rich source of antimicrobial agents. The most effective antibacterial activity was expressed by methanol and water extract of cornelian cherry fruit against S. aureus with 25 mm inhibition zone and 0.156 mg/ml Minimum Inhibitory Concentration (MIC) value. Only methanol extracts of the fruit have antifungal activity against tested human pathogen clinic isolates.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83380808","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":"Gaussian Modified Pell Sequence and Gaussian Modified Pell Polynomial Sequence","authors":"Tülay Yaǧmur, Nusret Karaaslan","doi":"10.29002/asujse.374128","DOIUrl":"https://doi.org/10.29002/asujse.374128","url":null,"abstract":"In this paper, we first define the Gaussian modified Pell sequence , for n ≥ 2 , by the relation = 2 + with initial conditions = 1 ─ i and = 1 + i. Then we give the definition of the Gaussian modified Pell polynomial sequence , for n ≥ 2 , by the relation = 2 + with initial conditions = 1 ─ xi and = x + i. W e give Binet’s formulas, generating functions and summation formulas of these sequences. We also obtain some well-known identities such as Catalan’s identities, Cassini’s identities and d’Ocagne’s identities involving the Gaussian modified Pell sequence and Gaussian modified Pell polynomial sequence.","PeriodicalId":7626,"journal":{"name":"Aksaray University Journal of Science and Engineering","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76175017","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}