Ege Üniversitesi Kurumsal Akademik Arşivi
DSpace@Ege, Ege Üniversitesi tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Acute pancreatitis occurring after COVID-19 vaccine: a case report and literature review
(SpringerNature, 2024) Kabaoglu, Ceren; Ozisik, Hatice; Kocabas, Gokcen Unal; Yurekli, Banu Sarer; Erdogan, Mehmet
BackgroundVaccines are uncommon causes of pancreatitis, and only a few case reports have described COVID-19 vaccine-related pancreatitis.Case presentationA 45-year-old male patient applied to the emergency department due to having serious abdominal pain. Pfizer-BioNTech COVID-19 vaccine, the last dose was administered 1 week ago. One week after vaccination, he experienced abdominal pain. Laboratory tests demonstrated elevated C-reactive protein, amylase, and lipase levels, and Ig G4 levels were normal. Abdominal computer tomography (CT) displayed acute edematous pancreatitis and peripancreatic inflammatory changes. The patient was diagnosed with acute pancreatitis due to the vaccine.ConclusionWe should be aware that acute pancreatitis induced by the vaccine may occur a few days or weeks after the vaccine, especially in patients who have risk factors for acute pancreatitis.
Implementation of machine learning models as a quantitative evaluation tool for preclinical studies in dental education
(Wiley, 2024) Oguzhan, Aybeniz; Peskersoy, Cem; Devrimci, Elif Ercan; Kemaloglu, Hande; Onder, Tolga Kagan
Purpose and objective: Objective, valid, and reliable evaluations are needed in order to develop haptic skills in dental education. The aim of this study is to investigate the validity and reliability of the machine learning method in evaluating the haptic skills of dentistry students. Materials and methods: One-hundred fifty 6th semester dental students have performed Class II amalgam (C2A) and composite resin restorations (C2CR), in which all stages were evaluated with Direct Observation Practical Skills forms. The final phase was graded by three trainers and supervisors separately. Standard photographs of the restorations in the final stage were taken from different angles in a special setup and transferred to the Python program which utilized the Structural Similarity algorithm to calculate both the quantitative (numerical) and qualitative (visual) differences of each restoration. The validity and reliability analyses of inter-examiner evaluation were tested by Cronbach's Alpha and Kappa statistics (p = 0.05). Results: The intra-examiner reliability between Structural Similarity Index (SSIM) and examiners was found highly reliable in both C2A (alpha = 0.961) and C2CR (alpha = 0.856). The compatibility of final grades given by SSIM (53.07) and examiners (56.85) was statistically insignificant (p > 0.05). A significant difference was found between the examiners and SSIM when grading the occlusal surfaces in C2A and on the palatal surfaces of C2CR (p < 0.05). The concordance of observer assessments was found almost perfect in C2A (kappa = 0.806), and acceptable in C2CR (kappa = 0.769). Conclusion: Although deep machine learning is a promising tool in the evaluation of haptic skills, further improvement and alignments are required for fully objective and reliable validation in all cases of dental training in restorative dentistry.
The multiple nature of CC Com: One of the ultra-short orbital period late-type contact binary systems
(Cambridge University Press, 2024) Kocak, Dolunay
The study of very short-period contact binaries provides an important laboratory in which the most important and problematic astrophysical processes of stellar evolution take place. Short-period contact systems, such as CC Com, are particularly important for binary evolution. Close binary systems, especially those with multiple system members, have significant period variations, angular momentum loss mechanisms predominance, and pre-merger stellar evolution, making them valuable astrophysical laboratories. In this study, observations of CC Com, previously reported as a binary system, and new observations from the T & Uuml;B & Idot;TAK National Observatory (TUG) and the space-based telescope TESS have revealed that there is a third object with a period of about eight years and a fourth object with a period of about a century orbiting the binary system. From simultaneous analysis of all available light curves and radial velocities, the sensitive orbital and physical parameters of the system components are derived. The orbital parameters of the components are PA=0.2206868 +/- 0.0000002 days,P-B=7.9 +/- 0.1 yr, P-C=98 +/- 5yr,e3=0.06,e4=0.44 and the physical parameters as M-A1=0.712 +/- 0.009 M-circle dot,M-A2=0.372 +/- 0.005 M-circle dot,m(B;i ')=90 degrees=0.074 M-circle dot,m(C;i ')=90 degrees=0.18 M-circle dot,R-A1=0.693 +/- 0.006 R-circle dot,R-A2=0.514 +/- 0.005 R-circle dot,L-A1=0.103 L-circle dot,L-A2=0.081 L-circle dot. Finally, theevolutionary status of the multiple system CC Com and its component stars is discussed
Modification of Waste Pumice Stone for Valorization Purposes
(Springer, 2024) Bahtiyari, Muhammed Ibrahim; Aydinlioglu, Omer; Yapar, Saadet; Korlu, Aysegul
Waste pumice stones used in denim garment finishing processes to provide a unique effect on denim garments causes highly huge environmental load considering the yearly denim production. In this study, it was aimed to reduce the solid waste load by modifying waste pumice stones and finding new areas of use. Contrary to the studies reported in the literature, the modification of waste pumice stone to achieve different structural properties enhancing the moisture adsorption capacity of the material constitutes the novelty of the study. Additionally, the effect of sodium silicate/sodium aluminate ratio on the structural properties was tested. The characterization studies of unmodified and modified waste pumice stones were achieved by the zeta potential and particle size measurements, BET, XRD, FTIR, SEM-EDX analyses and the determination of moisture adsorption/desorption features of the samples. The results of the studies revealed that the amorphous structure of the waste pumice stone was converted into cubic-shaped regular formations by the modification. Further evaluation of XRD measurements demonstrated that the modification led to the transition of amorphous structures to zeolitic structures (Zeolite A and Na-P1 phases). The formation of two different zeolitic structures was attributed to the change in the sodium silicate/sodium aluminate ratio. The results of the moisture adsorption/desorption capacity measurements showed that the modification increased the water vapour adsorption capacity of pumice stone almost 12 times. With these findings, they were identified as possible promising candidates for adsorption.
The efficacy of some endophytic fungi against primary grapevine black foot disease pathogens
(Taylor & Francis Ltd, 2024) Yildiz, Murat; Gunhan, Metehan; Savas, Nurdan Gungor; Tosun, Necip
Black foot disease (BFD), primarily attributed to taxa within the genera Dactylonectria and Ilyonectria, is a significant problem that causes serious damage worldwide in many grape and wine regions. This threat could especially be destructive in nurseries and early-stage vineyards, where it induces a decline in growth along with drying, leading to a reduction in the quality and lifespan of the grapevines. This research mainly focused on assessing the biocontrol capabilities of endophytic isolates derived from grapevine saplings, specifically Acremonium sclerotigenum and Clonostachys rosea. The study aimed to assess their effectiveness against the major pathogens responsible for BFD, including Dactylonectria macrodidyma, D. torresensis, and I. liriodendri, under laboratory and in vivo conditions. In the conducted paired culture assays, Trichoderma harzianum KRL-AG2 was employed for comparative purposes. On the 28th day of antagonistic tests, the inhibition response of A. sclerotigenum (>= 94%) and C. rosea (>90%) isolates against the three species of BFD, D. macrodidyma, D. torresensis, and I. liriodendri, reached the maximum inhibition rate. Based on the in vivo analysis conducted with 1103 P rootstocks, T. harzianum, A. sclerotigenum, and C. rosea isolates significantly reduced the disease severity and supplied notable positive effects on plant growth parameters, including root dry weight, root length, and shoot dry weight. These results suggest that these biocontrol agents have potential for the biological management of BFD.
