Ustundag Y. | Yilmaz Urun Y.

Article | 2018 | VideoGIE3 ( 3 ) , pp.89 - 90

[No abstract available]

Toprak A. | Bozgeyik K.

Article | 2018 | Journal of the Turkish Chemical Society, Section A: Chemistry5 ( 1 ) , pp.219 - 236

This study examined protein adsorption equilibrium and kinetics on activated carbon (AC) that we obtained from coal by single-step H3PO4 activation under N2+H2O vapor at 800 °C. Surface properties, pore size distribution, and volumes of AC were determined using volumetric method with N2 adsorption at 77 K. Also, the textural properties were characterized by SEM-EDAX and XRD. The zeta potential values were measured to elucidate the electrostatic interactions between the protein and AC. The obtained AC discrete system was also used as an adsorbent for adsorbing bovine serum albumin (BSA) from aqueous solution. The effects of pH (4.0, . . .5.0, and 7.4) and temperatures (20, 30 and 40 °C) on the adsorption of BSA on AC were examined. The surface area, micropore, mesopore and total pore volumes of AC were found to be 1175 m2/g, 0.477 cm3/g, 0.061 cm3/g and 0.538 cm3/g, respectively. The optimum temperature for AC in BSA adsorption was found to be 40 °C and the pH was found to be 4.0. The highest BSA adsorption was found to be 159 mg/g and pH to be 4.0. The experimental equilibrium data were compared with the Langmuir and Freundlich models and found to be compatible with both models. The adsorption process is best described by the pseudo-first-order kinetic model. As a result, it was found out that AC obtained by single step H3PO4/N2+H2O vapor activation is an effective adsorbent for the adsorption of BSA from aqueous solution. © 2018, Turkish Chemical Society. All rights reserved Daha fazlası Daha az

Acikgoz, Bilgehan | Acikgoz, Banu | Karakoyun, Ali Riza | Yuksel, Nehir Aslan | Akca, Fatih | Akca, Ayse Semra Demir | Ayoglu, Ferruh Niyazi

Article | 2018 | KONURALP TIP DERGISI10 ( 2 ) , pp.168 - 174

Objective: Violence is one of the realities of life, and it is one of the most important social problems. Violence might be physical, sexual or emotional. Violence can occur in different ways in flirt affairs, such as rape, beat, threat, sexual harassment, and abuse of emotion. There has not been enough research carried out on the violence in flirt. In this study, it was aimed to determine the frequency and type of the violence in flirt among 5th and 6th grade students in who educated faculty of medicine. Methods: This descriptive cross-sectional study was carried out with 88 (83,8%) of 105 students in the fifth and sixth grade in F . . .aculty of Medicine of Bulent Ecevit University that accepted to participate in the study, between May and June 2014 timeline. With the questionnaire form prepared by the researchers, the socio-demographic characteristics of the students, their situation of committing violence and being exposed to violence were questioned. Results: The median age of 88 students, participated in the study, are 24 years, and 33 (37,5%) of those are male. Sixty nine (78,4%) of these students either previously flirted or were flirting at that moment. The median age of first flirts is 17 (min: 10, max: 24). Fifteen (15%) of those who flirted previously haven't exposed to violence and didn't commit violence. Ten (% 14,7) of the students were exposed to physical violence of flirt, 51 (75,0%) of those were exposed to emotional violence of flirt, and 9 (13,2%) of those were exposed to sexual violence of flirt. Regarding the students who committed violence of flirt; 16 (20,6%) of those committed physical violence, 45 (66,2%) of those committed emotional violence, 5 (7,4%) of those committed sexual violence. The violence of flirt, most frequently being exposed (33,0%) and committed (28,4%), is to talk by raising voice. Conclusion: According to datas of this study, were indicated that raising voice against partner is the most frequently being exposed violence of flirt; and emotional violence is the most frequently committed violence of flirt Daha fazlası Daha az

Ergun Y. | Ozdemir N.Y. | Guner E.K. | Esin E. | Sendur M.A. | Koksoy E.B. | Demirci N.S.

Article | 2018 | Journal of B.U.ON.23 , pp.116 - 121

Purpose: Gemcitabine is among the standard first-line agents for the treatment of metastatic pancreatic cancer. However, as the median survival with gemcitabine monotherapy is 6 months, different combinations are being studied for better, prolonged survival. In this multicenter study, we aimed to compare the results of gemcitabine monotherapy with those of gemcitabine and cisplatin combination therapy as first-line treatments for metastatic pancreatic cancer. Methods: Data of 664 patients diagnosed with metastatic pancreatic cancer between January 2007 and December 2016 from seven oncology centers in Turkey were retrospectively eval . . .uated, and 319 patients with gemcitabine alone (n=138) or gemcitabine and cisplatin combination (n=181) as first-line treatment were included. Results: The median patient age was 62 years (range 42-79), being 60 years (42-75) in the gemcitabine/cisplatin arm and 67 years (52-79) in gemcitabine alone arm. no complete response was observed in either arm, whereas partial response rates were 30.1% in gemcitabine/cisplatin arm and 15.3% in gemcitabine alone arm (p=0.001). median overall survival was 8 months (95% CI:7.7–10.2) and was significantly longer in the gemcitabine/cisplatin arm than in the gemcitabine alone arm (10 vs. 6 months, p=0.004). Conclusion: The cemcitabine and cisplatin combination therapy as first-line treatment of metastatic pancreatic cancer yields significantly prolonged survival over gemcitabine monotherapy. In patients with favorable performance conditions, the combination therapy should be preferred. © 2018 Zerbinis Publications. All Rights Reserved Daha fazlası Daha az

Acar, Bahadir | Bas, Sahin

Article | 2018 | INTERNATIONAL JOURNAL OF RENEWABLE ENERGY RESEARCH8 ( 4 ) , pp.1859 - 1867

Systems of concentrating solar energy (CPV) are photovoltaic systems that contain light-intensifying optical components. It is expected to increase performance of solar energy cell by improving sunlight intensity that falls on solar energy cell with these systems. A system of concentrating solar energy consists of a light-intensifying optical component, cell platform, also reciever, heat tank for thermal applications, main module body that consists these components as placed in approriate manner and sun tracking system. Each of these matters is still in need of research and development studies. In this study, concentrating solar sys . . .tem that is rarely prefered in practical use at area and thermoelectric generators were used together to develop a hybrid energy generating system. Thus, it has been researched the potential of energy generation as preferably less cost. Also, it has been determined that heat increase of water that is being used as cooling water can be evaluated in order to help thermal process and recovery as usable water due to potential of obtaining 30% of temperature increase from waste water. It has been found in study that concentrated solar energy cells can generate 15% more voltage and 60% more current than standard usage and three thermoelectric modules connected as series can generate average of 5,19 V of voltage and 0,47 A of current especially integrated to system on summers. On the other hand, it is predicted that this system will provide a light for similar studies because the system has no carbon emissions and sufficient energy efficiency Daha fazlası Daha az

McCollough J. | Bayramoglu M.F. | He M.

Article | 2018 | International Journal of Consumer Studies42 ( 1 ) , pp.131 - 140

It is generally considered to be safer for the environment to repair a malfunctioning product for further reuse than to dispose of it and replace it with a newly manufactured product, unless the product is being replaced with a more energy efficient alternative. However, whereas United States has long been labelled a ‘throwaway society’, this paper presents the results of an international consumer survey which demonstrates that as other nations develop with respect to GDP per Capita (Gross Domestic Product per Capita), they too start transitioning into throwaway societies. This transition then calls into account of just how environm . . .entally damaging this practice will become. © 2017 John Wiley & Sons Lt Daha fazlası Daha az

Orhan, Ersin | Kose, Mahmut | Yazan, Tolga

Article | 2018 | TURKISH JOURNAL OF CHEMISTRY42 ( 4 ) , pp.1086 - 1094

Three new photochromic compounds, 3-(2,5-dimethyl-3-thienyl)-4-(2-phenyl-5-methyl-4-thiazolyl)-l,8-naphthalimide (1-O), 2,3-bis(2-phenyl-5-methyl-4-thiazolyl)-7H-benzimidazo[2,1-a]benzo[de]isoquinolin-7-one (2-O), and 2,5-dimethyl-3-thienyl)-7H-benzimidazo[2,1-a]benzo[de]isoquinolin-7-one (3-O), were synthesized and their photochromic properties were studied. Compound 1-O was synthesized by two consecutive Suzuki coupling reactions using 2,5-dimethylthiophene-3-boronic acid and 5-methyl-2-phenylthiazole-4-boronic acid. Photochromic compounds 2-O and 3-O were prepared by multistep reactions starting with 3-iodo-4-bromo-1,8-naphthalic . . . anhydride and 2,5-dimethylthiophene3-boronic acid or 2-phenyl-5-methylthiazole-4-boronic acid. All photochromic compounds showed a color change from colorless (or light yellow) to blue-green, purple, or orange colors (depending on the nature of the structures) on exposure to UV light at 365 nm in ethyl acetate solutions. The colored solutions can be reversed to the original colorless (or light yellow) solution by exposure to visible light at 530 nm Daha fazlası Daha az

Hamed T.A. | Adamovic N. | Aeberhard U. | Alonso-Alvarez D. | Amin-Akhlaghi Z. | Auf Der Maur M. | Beattie N.

Article | 2018 | EPJ Photovoltaics9 , pp.1086 - 1094

Photovoltaics is amongst the most important technologies for renewable energy sources, and plays a key role in the development of a society with a smaller environmental footprint. Key parameters for solar cells are their energy conversion efficiency, their operating lifetime, and the cost of the energy obtained from a photovoltaic system compared to other sources. The optimization of these aspects involves the exploitation of new materials and development of novel solar cell concepts and designs. Both theoretical modeling and characterization of such devices require a comprehensive view including all scales from the atomic to the ma . . .croscopic and industrial scale. The different length scales of the electronic and optical degrees of freedoms specifically lead to an intrinsic need for multiscale simulation, which is accentuated in many advanced photovoltaics concepts including nanostructured regions. Therefore, multiscale modeling has found particular interest in the photovoltaics community, as a tool to advance the field beyond its current limits. In this article, we review the field of multiscale techniques applied to photovoltaics, and we discuss opportunities and remaining challenges. © T. Abu Hamed et al., published by EDP Sciences, 2018 Daha fazlası Daha az

Köken E. | Özarslan A. | Bacak G.

Article | 2018 | Granular Matter20 ( 2 ) , pp.1086 - 1094

In this study, the durability of railway ballast material is investigated by magnesium sulfate soundness tests. Two types of ballast aggregates, which are produced from basaltic rocks and currently used as railway ballast in such high speed railway routes in Turkey, are investigated regarding their resistance against freezing–thawing (FT) and traffic loads. Firstly, the mineralogical and physico-mechanical properties of rocks are determined. Then the degradation of investigated ballast aggregates is determined by magnesium sulfate soundness and Los Angeles abrasion (LAA) tests. The natural FT effects are simulated by magnesium sulfa . . .te soundness tests up to 40 cycles, whereas the traffic loads are represented by LAA tests up to 3000 revolutions. The ballast fouling that leads to such problems are also investigated within the scope in the present study. The degree of ballast fouling is quantified as fouling index (FI) which is determined using the crushed particles generated after LAA tests. It is concluded from laboratory studies that rock properties considered are considerably influenced by simulated FT cycles. It is also achieved from the laboratory studies that magnesium sulfate soundness and Los Angeles abrasion tests are good indicators to clarify the fragmentation mechanism of the ballast aggregate in laboratory scale. In conclusion several empirical formulas are developed to predict LAA and FI for each rock type. The proposed empirical formulas could be utilized as a pre-design tool for new railway routes in design stage provided that the investigated ballast aggregates are considered. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature Daha fazlası Daha az

Berik M. | Kartal S.K.

Conference Object | 2018 | 26th IEEE Signal Processing and Communications Applications Conference, SIU 2018 , pp.1 - 4

In this study, real-time online body detection under water was conducted using an unmanned underwater observation tool. According to the underwater position of the vehicle, data from the vehicle camera is provided to identify different body parts of a body in a real-time video stream. Here we present an approach for underwater human body detection based on the use of highly educated classifiers. The algorithm's performance in real time video shooting of the car is optimized to reduce the false positive rate by aiming to identify a corpse part of each picture frame. According to the results obtained, it was ensured that the corpse pa . . .rts were successfully detected under changing conditions with incorrect positive perception. Algorithms were developed using the Pyhton program. © 2018 IEEE Daha fazlası Daha az

Yildiz E. | Çabuk H.

Article | 2018 | Analytical Methods10 ( 3 ) , pp.330 - 337

A simple and rapid pretreatment method based on effervescent tablet-assisted dispersive liquid-liquid microextraction was introduced for the determination of three fungicides (azoxystrobin, chlorothalonil, and cyprodinil) in fruit juice samples followed by liquid chromatography-ultraviolet detection. The effervescent tablet composed of sodium dihydrogen phosphate, sodium carbonate and 1-dodecanol was prepared in a simple way. The ingredients consisting of the above three components were manually blended in an empty medicine strip and cooled in a refrigerator. Hence, an effervescent tablet was obtained within 5 min without the need f . . .or a press machine thanks to the solidification of 1-dodecanol at room temperature. In situ generation of carbon dioxide during the microextraction process enabled the dispersion of the extractant within the aqueous phase and enhanced the contact area both between phases. Under the optimized conditions, the extraction recoveries ranged from 53 to 88%. Good linearity was observed by the square of correlation coefficients better than 0.9980. Relative standard deviations were less than 4.8% for intra-day and 7.6% for inter-day precision at a concentration of 3.0 µg L-1 of each analyte. Limits of detection ranged from 0.09 (chlorothalonil) to 0.19 µg L-1 (azoxystrobin). The proposed new method was successfully applied for the analysis of three fungicides in real samples of fruit juices and satisfactory recoveries (76-104%) were achieved. © 2018 The Royal Society of Chemistry Daha fazlası Daha az

Sozen E. | Zor M. | Aydemir D.

Article | 2018 | Drvna Industrija69 ( 1 ) , pp.13 - 22

This study evaluated the effect of nano boron nitride (BN) and nano titanium dioxide (TiO2) on some physical, mechanical and thermal properties of WF/PP composites. Polyproplene as a polymer matrix and wood flour obtained from particleboards were used as reinforcing fillers to prepare the composites by using a single screw extruder. It was observed that density in all composites did not change significantly with the increasing of wood flour. It was found that BMOR and BMOE of the composites increased with the increasing of the wood flour content and nanoparticle types, while the TMOR and TMOE decreased. According to the results of t . . .hermal properties (TGA), thermal degradation of all composites was found to be lower compared with pure PP. © 2018, Journal Drvna Industrija. All rights reserved Daha fazlası Daha az