Full-text resources of PSJD and other databases are now available in the new Library of Science.
Visit https://bibliotekanauki.pl
Preferences help
Polish version English version Language
enabled [disable] Abstract
Number of results

Results found: 5

Number of results on page
first rewind previous Page / 1 next fast forward last

Search results

help Sort By:

help Limit search:
first rewind previous Page / 1 next fast forward last
1
Content available remote

Wall Thickness Measurement of Pipes by Using Digital Radiography

100%
Cobanoglu M., Altinsoy N.
Acta Physica Polonica A
|
2015
|
vol. 127
|
issue 4
1261-1263
EN
One of the most important parameters in a pipeline to be monitored and measured is the wall thickness. Pipe wall thickness can vary after a certain period of time, as a result of accumulation of various chemical or physical effects. Pipe wall thickness can be monitored by the proper use of ultrasonic or radiographic inspection methods even while the plant is in operation. Only the radiographic method assures inspection without costly removal of insulation material during operation of the plant. The purpose of this study is to define the wall thickness of pipes by using digital radiography technique. The outer diameter of the studied pipes is ranging from 51 mm to 60.3 mm and wall thickness is ranging from 2.9 mm to 3.6 mm. Experiments were repeated by changing the "focal detector distance" and "pulse" parameters.
2
Content available remote

Investigation of Shielding Performance of Concretes Produced with Iron Fillings Using Betatron X-Ray Radiography

81%
Ozyurt O., Altinsoy N., Buyuk B., Fenerci E.
Acta Physica Polonica A
|
2016
|
vol. 129
|
issue 4
829-831
EN
One of the most widely used structural materials in radiation shielding is concrete. Addition of metal particulates to concrete to enhance its density can be used for gamma and X-ray shielding purposes. In this study radiation shielding performance of concrete containing different amounts of iron filling were evaluated using Betatron X-ray radiation source. For this purpose concretes were produced by adding iron filling in the ratios of 0%, 10%, 20%, 30% (in weight) to the cement. CIT/7.5 Betatron source which is a compact, circular electron accelerator, generating directional X-ray beam, was used in this study. Experiments were performed by using conventional radiography test. The results were compared with results for normal concrete. It was observed that the film density differences between the iron filling and normal concrete are in the range of about 10-60%.
3
Content available remote

Investigation of Gamma Ray and Neutron Attenuation Coefficients for Granites Produced in Turkey

81%
Ozyurt O., Altinsoy N., Buyuk B.
Acta Physica Polonica A
|
2015
|
vol. 127
|
issue 4
1268-1270
EN
In this study, shielding properties of granites which are produced in Turkey were studied for gamma ray and neutrons. Linear and mass attenuation coefficients for gamma ray were measured at 1.17 MeV, 1.33 MeV and 0.662 MeV by gamma spectrometry system containing NaI(Tl) detector. Pu-Be source was used in measuring linear neutron attenuation coefficients of the granite samples. Measurements were carried out by using narrow beam geometry by using gamma and neutron transmission technique. The gamma transmission results have been compared with winXCOM calculations and a good correspondence has been obtained.
4
Content available remote

Kinetic and Thermodynamic Behavior of Selenium on Modified Bentonite and Activated Carbon using Radiotracer Technique

52%
Tuğrul B., Erentürk S., Haciyakupoğlu S., Karatepe N., Altinsoy N., Baydoğan N., Baytaş F., Büyük B., Demir E., Gedik S.
Acta Physica Polonica A
|
2015
|
vol. 128
|
issue 2B
B-180-B-181
EN
This study was aimed to determine kinetic and thermodynamic behaviors of selenium on modified bentonite and activated carbon. Thermodynamic parameters such as enthalpy ΔH, free energy change ΔG and entropy change ΔS of selenium adsorption suggested that the adsorption of Se(IV) on activated carbon and organic-inorganic modified bentonite was exothermic and endothermic process, respectively. The experimental data fitted very well the pseudo-second-order kinetic model for both adsorbents.
5
Content available remote

Investigation for Remediation of Selenium Aqueous Environment with Using Organic Pillared Bentonite by Radiotracer Technique

42%
Tugrul A., Haciyakupoglu S., Erenturk S., Karatepe N., Baytas F., Baydogan N., Altinsoy N., Buyuk B., Orucoglu E., Demir E., Camtakan Z., Okka M.
Acta Physica Polonica A
|
2015
|
vol. 127
|
issue 4
1186-1188
EN
In this study remediation of selenium ions from aqueous solutions was investigated using organic pillared bentonite as an adsorbent. Organic pillared bentonite was produced from Resadiye (Tokat, Turkey) bentonite using hexadecylpyridinium chloride and aluminum polyoxy-cations. All the experiments were carried out by tracing with selenium radioisotope. For the production of the radioactive selenium radioisotope, selenium dioxide was irradiated in the central thimble of ITU TRIGA Mark II Training and Research Reactor at Energy Institute of Istanbul Technical University. Radioactivity measurements carried out by the gamma-ray spectroscopy system were used to determine of selenium isotope. The relative importance of test parameters like concentration of adsorbate, pH of the solution and contact time on adsorption performance of organic pillared bentonite for selenium ion was studied. Evaluation of experiments for different parameters showed possibility of remediation of selenium from aqueous media by using organic pillared bentonite.
first rewind previous Page / 1 next fast forward last
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.