Individual and combined effects of α-Pinene and a native diatomaceous earth product on control of stored product beetle pests

Atay Turgut,Alkan Mustafa,Ertürk Sait,Toprak Umut 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.4

The development of alternatives to chemical insecticides has been an attractive topic in stored product pest management due to the limited number of options. This study examined the individual and combined activities of two promising eco-friendly alternatives, the diatomaceous earth product Detech® and the plant-based essential oil α-pinene, against Sitophilus granarius (L.), S. zeamais Motschulsky, 1855 (Coleoptera: Curculioni dae), Tribolium confusum Jaquelin Du Val, 1868 (Coleoptera: Tenebrionidae) and Rhyzopertha dominica (Fab ricius, 1792) (Coleoptera: Bostrichidae) under laboratory conditions. Individual and combined insecticidal effects of Detech® and α-pinene were evaluated by their direct application to wheat or maize. Complete mor tality against S. granarius, R. dominica, and T. confusum occurred at 2 days with 10 and 15 ppm of α-pinene, while 15 ppm of α-pinene produced 100% mortality after 3 days of exposure for S. zeamais. The highest mortality with Detech® was 38.6% at 21 days using 500 ppm for S. zeamais, while it was 51.7 % against S. granarius, and 72.7 % against R. dominica. Detech® did not show any significant activity against T. confusum at any application level. Combined applications of Detech®+α-pinene demonstrated the highest mortality on R. dominica (40.4% mor tality), S. zeamais (27.9%), and S. granarius (18.5%), while no significant effect was found on T. confusum (1.1%). Overall, α-pinene was more effective than Detech® against all four tested beetles species. Combined applications led to reduced mortality.

Use of borosilicate glass waste as a fluxing agent in porcelain bodies

Çag˘ atay Koca 한양대학교 세라믹연구소 2012 Journal of Ceramic Processing Research Vol.13 No.6

Porcelain is a material produced from kaoline, quartz and potassium-feldspar. Recently, research of new materials, for example non-hazardous wastes, that are able to replace traditional fluxing agents without changing the process or quality of the final products has been realized. The aim of this investigation is to study the possibility of the use of borosilicate glass waste powder for manufacturing porcelain. The borosilicate glass waste was added partially and fully in replacement of potassiumfeldspar. Samples were fired in an electric furnace with a heating rate of 10 ο C minute-1 at 1000, 1100, 1200 and 1300 ο C for periods of 1, 2, 3 and 5 hours. The sintered samples were characterised by XRD (X-ray diffraction) and SEM (scanning electron microscopy). Sintering activation energies were determined based on the bulk density results. With 0, 5, 10, 15 and 25 wt.% glass waste additions, the apparent activation energies were calculated to be 166, 110.73, 109.85, 65, 43 kJ/mol, respectively. It was found that the sintering activation energy decreased with an increase in the waste glass addition.

The new Turkish early childhood teacher education curriculum: a brief outlook

Tulay Atay-Turhan 서울대학교 교육연구소 2009 Asia Pacific Education Review Vol.10 No.3

This article aims to describe and reflect on the new early childhood teacher education curriculum in Turkey. The new curriculum is part of a large-scale reform agenda to improve education at all levels. The article begins with a brief history of early childhood education and early childhood teacher education in Turkey. Then, the needs for the curriculum revision and major characteristics of the revised curriculum are discussed. The article concludes with brief discussion about the innovations and suggestions for future research dealing with the implementation and effectiveness of the revised curriculum.

GLOCAL SCHOOLS OF TURKEY:FROM RURAL AREAS TO GLOBAL STAGE

Erhan Atay 한국교육행정학회 2011 한국교육행정학회 학술연구발표회논문집 Vol.2011 No.2

Soft Power Antidote to Clash of Civilizations: The Case of Turkey-originated Volunteer Movement

( Erhan Atay ) 한국행정학회 2010 한국행정학회 학술발표논문집 Vol.2010 No.-

Building a Lung and Ovarian Cancer Data Warehouse

Canan Eren Atay,Georgia Garani 대한의료정보학회 2020 Healthcare Informatics Research Vol.26 No.4

Objectives: Despite the collection of vast amounts of data by the healthcare sector, effective decision-making in medicalpractice is still challenging. Data warehousing technology can be applied for the collection and management of clinical datafrom various sources to provide meaningful insights for physicians and administrators. Cancer data are extremely complicatedand massive; hence, a clinical data warehouse system can provide insights into prevention, diagnosis and treatmentprocesses through the use of online analytical processing tools for the analysis of multi-dimensional data at different granularitylevels. Methods: In this study, a clinical data warehouse was developed for lung cancer data, which were kindly providedby the United States National Cancer Institute. Lung and ovarian cancer data were imported in specific formats andcleaned to remove errors and redundancies. SQL server integration services (SSIS) were used for the extract-transform-load(ETL) process. Results: The design of the clinical data warehouse responds efficiently to all types of queries by adopting thefact constellation schema model. Various online analytical processing queries can be expressed using the proposed approach. Conclusions: This model succeeded in responding to complex queries, and the analysis of data is facilitated by using onlineanalytical processing cubes and viewing multilevel data details.

Use of Thixoforming as a Manufacturing Method for Metallic Composites

Hüsnügül Yilmaz Atay,David Aišman,Hana Jirková,Mária Behulova,Bohuslav Mašek 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.9

Thixoforming is one of the members of the family of semi-solid forming processes. It is possible to obtain complex shapeof materials by this method and unconventional microstructures can be achieved due to its thixotropic properties. However,in this study thixoforming was used not only as forming method but also as a manufacturing method. Metallic compositeswere manufactured by a process of integration of powder metallurgy and semi-solid production technique. The mixture ofCo72.5B15Si12.5alloy and Fe powders become partially melted, compressed mechanically in semi-solid state and filled intricatecavities. Without changing alloy structure, it could be possible to reinforce it with Fe powders. Moreover, the final shapeof the product could be achieved at the same time. Prior to the process, Co72.5B15Si12.5alloy obtained in the form of stickwas characterized by X-ray diffraction (XRD), scanning electron microscopy–energy dispersive spectroscopy (SEM–EDX),differential thermal analysis-thermogravimetry (DTA-TG), light microscope and micro-hardness machine. The stick wasmilled to get alloy powders and they were blended with iron. Characterization of the structures of the composite materialwas performed. It was concluded that the heating process of iron and alloy powders provides the formation of compact metalmatrix composites.

Does the Use of Rocuronium-Sugammadex Instead of Succinylcholine in Electroconvulsive Therapy Affect Seizure Duration?

Oflezer Ceyhan,Atay Özge,Kaşdoğan Zümrüt Ela,Özakay Gülay,İpekçioğlu Derya,Bahadır Hakan 대한신경정신의학회 2022 PSYCHIATRY INVESTIGATION Vol.19 No.10

Objective We compared retrospectively the seizure variables of electroconvulsive therapy (ECT) patients after administration of rocuronium-sugammadex or succinylcholine as a muscle relaxant with propofol anesthesia.Methods The sample comprised 134 ECT patients. The mean age was 33.6±10.48 years. Anesthesia induction was provided with propofol one mg kg-intravenously (IV) followed by succinylcholine 0.5 mg kg^-1 IV (n=68) (Group S) or rocuronium 0.3 mg kg^-1 IV (n=66) (Group R). For patients who were given rocuronium, reversal of the residual neuromuscular block was accomplished with sugammadex (1.5 mg kg^-1 IV). First session seizure variables were compared between the two groups. We also presented the clinical outcome with Clinical Global Impression-Improvement (CGI-I) and overall adverse effects.Results EEG seizure durations in Group R (55.09±36.11 s) and Group S (47.00±26.33 s) were comparable and were not significantly different (p=0.432). The clinical efficacy of ECT measured by CGI-I in both groups was comparable (p=0.075). There were no major complications or death during or after ECT.Conclusion The results of this study show that the use of rocuronium-sugammadex as a neuromuscular blocker instead of succinylcholine during ECT with propofol anesthesia produces similar results in terms of seizure variables and clinical outcomes.

Predictive Role of Acute Phase Reactants in the Response to Therapy in Patients with Chronic Hepatitis C Virus Infection

( Ayten Oguz ),( Ahmet Engin Atay ),( Adnan Tas ),( Gulseren Seven ),( Mehmet Koruk ) 대한소화기학회 2013 Gut and Liver Vol.7 No.1

Background/Aims: Biochemical parameters and acutephase proteins (APPs) may provide complementary data in patients with chronic hepatitis C (CHC). We aimed to evaluate the predictive role of APPs in the response to antiviral therapy. Methods: Forty-five patients underwent antiviral therapy. Serum ferritin, C-reactive protein (CRP), transferrin, albumin, alpha-1 acid glycoprotein (A1AG), and alpha-2 macroglobulin (A2MG) levels were examined at the initial evaluation and at the 4th, 12th, and 48th weeks. HCV RNA levels were examined at the initial evaluation and at the 12th and 48th weeks. Results: Ferritin, transferrin, A1AG, and A2MG levels were significantly higher in the patient group (p<0.05). CRP, ferritin, A1AG, and A2MG levels were significantly increased from baseline to the 4th week (p<0.05). The responders and nonresponders to antiviral therapy had insignificantly but remarkably different levels of CRP, ferritin, transferrin, A1AG, A2MG, and alanine aminotransferase (ALT) both at the initial evaluation and at the 12th week. Conclusions: Variations in ferritin, A1AG, A2MG, albumin, CRP, and transferrin levels are not alternatives to virological and biochemical parameters for predicting an early response to therapy in patients with CHC. However, the investigation of ALT levels and hepatitis C virus RNA in combination with acute-phase reactants may provide supplementary data for evaluating responses to antiviral therapy. (Gut Liver 2013;7:82-88)

The Effects of Extensive Reading on Turkish Learners’ L2 Reading/Writing Performance and Foreign Language Self-Concept

Melda Yılmaz,Derin Atay,Mustafa ER 아시아영어교육학회 2020 The Journal of Asia TEFL Vol.17 No.1

This study investigates the impact of extensive reading (ER) program, which integrates extensive reading with in-class follow-up writing activities, on Turkish EFL learners’ L2 reading/writing and foreign language self-concept (FLSC). In this research, conducted in a Turkish university, experimental design was used and the experimental group was exposed to ER for six weeks different from the control group. Data was collected by means of L2 reading and writing tests and Foreign Language Self-concept Scale (FLSCS) (Er, 2007) given at the beginning and at the end of the intervention, and by means of focus group interviews carried out with 10 randomly chosen experimental group students. Analyses of the data showed a significant difference between control and experimental groups regarding their L2 reading and writing performance. The difference between the groups’ FLSC was found to be insignificant, though within group analyses indicated that ER affected the students’ FLSC positively. Qualitative data, interviews, supported the quantitative data and revealed that the project also improved students’ motivation and self-confidence as well as various aspects of L2 language ability and fostered their positive self images as EFL learners. The insights gained from the study provide important implications for English language teaching programmes in EFL context.