IV. Eurasian conference on nuclear science and its application : presentations, 31 October- 3 November 2006. Baku, Azerbaijan.

Permanent URI for this collection

https://kurumsalarsiv.tenmak.gov.tr/handle/20.500.12878/1027

Browse

Now showing 1 - 20 of 111

The investigation of availability of energy dispersive x-ray fluorescence system to observing bread staling
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Sağsöz, M. Erdem; Kotancılar, H. Gürbüz; Karaoğlu, M. Murat; Gerçekaslan, K. Emre; Erzeneoğlu, Salih Z.; 31789; Bölüm Yok
Bread staling mechanism has been investigated for a long time but, because of the mechanism of bread staling is a rather complex phenomenon, it is not entirely understood. The economic losses caused by bread staling are incredibly important for the world economy. It is generally accepted that starch reorganization is major cause of bread staling. Starch ciystallization in bread increases with time during staling. The crystallites formation due to retrogradation of starch (mainly amylopectin) has been studied by both X-ray diffraction (XRD) and differential scanning calorimetry (DSC). In this study, Ncoh/ NComp (R) intensity ratios are measured as functions of storage time with a Si(Li) detector using Am-241 annular source. The texture measurements have also been performed. Our experimental results are presented and discussed in this study.
Some electromagnetic transition properties and mixing ratios of tellurium isotopes
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Uluer, İ.; Yazar, H. R.; Bölüm Yok
IBM-2 calculation is presented for the low-lying states in the even-even 122 128Te core nucleus. We developed the projection by using the F-spin formalism from the operator of IBA-2 model over the operator of IBA-1 model space. With the help of this projection IBA-2 Hamitonian parameters are obtained and we explore the energy levels and the electric quadrupole transition probabilities B(E2;Ii -> If) and γ-ray E2/M1 mixing ratios for selected transitions. It was found that the calculated positive parity low spin state energy spectra of the even-even 122-128Te isotopes agree quite well with the experimental data.
Some electromagnetic transition probabilities and energy levels of 76Se isotope
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Uluer, İ.; Böyükata, M.; Bölüm Yok
The even-even 76Se isotope in the A~80 mass region and the general features of its structures have been investigated within the framework of the interacting boson model-II. The neutron proton version (IBM-II) of this model has previously been applied successfully to the light 76Se isotope with emphasis on the description of the 0+1, 2+1, 0+2, 2+2 and 4+1 states. The energy levels were calculated by using the NPBOS program code including the Hamiltonian parameters. The electromagnetic transition probabilities, B(E2;2+1 -> 0+1), B(E2;0+2 -> 2+1), B(E2;4+1 -> 2+1) B(E2;2+2 -> 2+1), B(E2;2+2 -> 0+1) and B(M1;2+2 -> 2+1 ), were computed by using the NPBTRN program code. Neutron-proton boson effective charges (eπ,ev) and g factors (gn,gv) were obtained by fitting to experimental values. The calculated energy levels and calculation of electromagnetic transition probabilities were compared with experimental and some previous theoretical results. It is seen that they are in good agreement. Keywords: Interacting boson model-II (IBM-II), Energy levels, B(E2) and B(M1) Electromagnetic Transition Probabilities, NPBOS and NPBTRN code.
Accelerator technology for the mankind
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Sultansoy, Saleh; Bölüm Yok
Particle accelerators technology is one of the generic technologies which is locomotive of the development in almost all fields of science and technology. According to the U. S. Department of Energy: Accelerators underpin eveiy activity of the Office of Science and, increasingly, of the entire scientific enterprise. From biology to medicine, from materials to metallurgy, from elementary particles to the cosmos, accelerators provide the microscopic information that forms the basis for scientific understanding and applications. The combination of ground and satellite based observatories and particle accelerators will advance our understanding of our world, our galaxy, our universe, and ourselves. Because of this, accelerator technology should become widespread all over the world. Existing situation shows that a large portion of the world, namely the South and Mid-East, is poor on the accelerator technology. UNESCO has recognized this deficit and started SESAME project in Mid-East, namely Jordan. Turkic Accelerator Complex (TAC) project is more comprehensive and ambitious project, from the point of view of it includes light sources, particle physics experiments and proton and secondary beam applications. At this stage, TAC project includes: • Linac-ring type charm factory • Synchrotron light source based on positron ring • Free electron laser based on electron linac • GeV scale proton accelerator • TAC-Test Facility. First part of this presentation is devoted to general status of particle accelerators around the world. The second part deal with the status of the TAC proposal.
Radiating optical stability of glass fiber waveguides
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
Azerbaijan National Academy of Science, Institute of Radiation Problems, Az 1143 In connection of importance of application vitreous Si02 (v-Si02) in the nuclear industry do not weaken attempts to receive this material with high stability to influence of radiation. The description of a method of reception of the preliminary form of glass possessing optical stability to action of radiation for manufacturing a glass fiber waveguides is submitted in work. On the basis of glass fiber waveguides various types of the gauges - acoustic, magnetic, temperature, gauges of pressure and etc., are developed. Optical fiber waveguides are used for transfer of a signal both on short and on a long distance. Transfer of a signal on short distances is carried out with use of fiber waveguides with losses much exceeding losses in waveguides on a long distance. If to accept reguirement showed to optical material for optical fibre communication lines that loss of light on working length of a wave should be less than 10 db/km for long lines and less than 50 db/km for short lines which length makes 100-300 m [1]. However, if fiber glass is maintained in conditions of radiating influence that it results in essential change of its optical characteristics and causes the raised losses of an information signal. So for example fiber glass with a core from V-Sİ02 and an environment from V-SiO2 + V-B2O3 at λ=0,82µm, value absorption coefficient α ~ 11 db/km and at a dose of an irradiation ~10(3) rad α~1000 db/km [2]. From these data follows that in a zone of an irradiation it is possible to maintain only fiber glasses subjected by rather low doses of radiations.
Radioactive wastes; some their questions of immobilization and opportunites of use
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
Development of atomic engineering is indissolubly accompanied by accumulation of huge quantity of radioactive waste (RW), in this connection there are problems as with processing RW in firm stable forms and creation of new places for their placing. In a number of the countries at the state level the specialized organizations carry out gathering, transportation and placing RW in various mountain developments, rocky breeds, shafts and etc. Alongside with it, also it is known, about use of radioactive waste products as sources of radiation [1, look work 2 and the references in it]. Radiation from radioactive substance caused a radioluminescence in crystallophosphorus and light radiation was absorbed by the photoelectronic converter with formation of a current. Here we also shall consider one of variants of use of radiation from RW with the purpose of manifacture of the electric power. However the converter of radiation from RW will be luminescing glass with optical stability action of radiation. Hence basic elements of a design of the device will be immobilized RW and optical steady glass.
The control of a dose of radiation over use of glass optical fiber waveguides
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
In radiating physics, chemisry, medicine, the nuclear industry, radiating technology, etc., there is a necessity of measurement of doses radiations in extremely wide range of their values. So for example, in radiating physics, chemistry and radiating technology rather big doses in an interval ~ 10 ÷10(8) Gy are used, where as in dosimetiy of the person where it is necessary to deal with questions biological protection, small doses in a range ~ 10(-6) ÷10(-2) Gy are used.
Formation of defects in vitreous Si02 under influence gamma-neutron (reactor) radiations
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
The vitreous dioxide of silicon (v-SiO2) is one of irreplaceable materials of constructional optics and constantly is in the center of attention of researchers. Its unique properties - high temperature of fusion, chemical stability, low dielectric losses, etc., have led to to wide use in various industries. Special interest is represented its optical and paramagnetic properties, change of these properties at operation v-SiO2 in fields of radiation, the nature and a structure of point defects.
Surface and volume diffusion of niobium atoms on wolfram surface (110)
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Imanbekov, Zh. Zh.; Imanbekova, T. D.; Bölüm Yok
Diffusion properties of niobium atoms at the surface (110) of tungsten monocrystall were studied measuring electron work function φ and Auger-electron spectroscopy. Hurst-Gauss model which considers “traps” capturing for short time the diffusing atoms was taken for description of volume diffusion of Nb atoms in W subsurface. Based on the determined coefficient DΔ for Nb volume diffusion into W, surface diffusion has been described within Fisher model in terms of “suction” of migrating atoms perpendicularly to the surface of interest.
Effect of preliminary irradiation of Karaman-Ermenek lignite on their thermal decomposition
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Çicek, F.; Eyubova, N.; Bölüm Yok
Influence of γ-irradiation of lignite from Karaman-Ermenek deposit of Turkey on its following thermal decomposition was studied. The absorbed dose of preliminary irradiation is £> = 5.4-410.4 kGy, the lignite decomposition temperature is t = 350-600°C. H2, CO, C02 and hydrocarbon gases CrC4 are identified as a products during lignite semi coking. It’s shown that the quantity of semi coke gas volume and hydrocarbon gases concentration extremely depend on the preliminary radiation dose, the maximum gas volume corresponds to the absorbed dose 20-70 kGy. This experimental fact is explained by the competition between radiation induces processes of destruction and polycondensation in the lignite organic mass.
Effective atomic numbers of polypyrrole via transmission method in the energy range 15.74-40.93 keV
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Erzeneoğlu, S.; İçelli, O.; Sağlam, M.; Durak, R.; Ateş, A.; Biber, M.; 46453; Bölüm Yok
In the present work, effective atomic numbers (Zeff) of polypyrrole have been determined for total photon interactions at energy range 15.74 - 40.93 keV from the accurately measured total attenuation coefficients, by transmission method employing a good geometry setup for characteristic Ka and Kp X-rays of Zr, Mo, Ag, In, Sb, Ba and Pr. 59.54 keV gamma rays from 241 Am (100 mCi) source were used to excite the secondary targets. Characteristic X-rays of related elements after excited have been sent on polypyrrole using as target or absorber. Possible conclusions are compared with the theoretical ones obtained using the XCOM. The polypyrrole film has been directly formed on an aluminum plate by means of an anodization process. A Pt plate was used as the cathode. Anodization process was carried out under constant current conditions of I = 1mA. The polypyrrole/Al/polypyrrole structure was fabricated by an electrolyte being held at a constant temperature of 55 °C that was composed of 0.40 M pyrrole and 0.1 M tetrabutylammoniume tetrafluoroborate. The electrolyte solution was prepared in a propylene carbonate solvent (Merck). The polypyrrole has been coated on each side of aluminum plate. The area and thickness of the A1 plate are 1 cm2 and 0.012 cm, respectively.
Labelling of tamoxifen with I-131 by iodogen method
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Müftüler, F. Z. B.; Ünak, Perihan; Teksöz, Serap; Acar, Ç.; Yolcular, S.; 34687; Bölüm Yok
Gamma radiation detectors on the base CdTe for environmental monitoring
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Bayramov, A. A.; Safarov, N. A.; Bölüm Yok
Preparing 99mTc labeled magnetite nanoparticles as drug carriers
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Medine, E. İ.; Ünak, Perihan; 162664; Bölüm Yok
Dextran coated 99mTc labeled magnetite nanoparticles were prepared in this study. Magnetite was synthesized by a coprecipitation reaction that occurs upon mixing 0.37 g FeCl3, 1.51 g FeCl24H20 with dextran T-40 (50w%, 10 ml, MW 40000). NH4OH solution (7.5% w/v) was added up to pH 10. A black magnetite precipitate was formed. Prepared magnetite nanoparticles were labeled using with 74 MBq 99mTcO4 after adding 100 µi (1 mg/ml) freshly prepared SnCl2 solution. Precipitated magnetic carrier particles were centrifuged and washed with pure water until the rinses became neutral. Labeling yield was over 96% and radiochemical purity was approximately 98%. The average size of particles was 150.2±6.1 nm.
Dielectric preperties and peculiarities of radiothermolumi nescence of compositions polypropylene-metal oxides
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Akhmedov, F. Y.; Ismailov, Y. M.; Bagirbekov, H. V.; Magerramov, A. M.; Aliyev, N. Sh.; Bölüm Yok
The given work presents the experimental data on study of temperature dependences c (T) and angle tangent of dielectric losses tgδ (T) of polypropylene (PP) and composites on the basis of beryllium oxide BeO at different components ratios as well as investigation of radiothermoluminessence (RTL) in these systems. Comparing the results on temperature dependencies of dielectric permittivity s, angle tangent of dielectric lasses tgδ and RTL spectra of the studied compositions one can say that observed low -temperature maximum in temperature dependence of electro physical parameters (Ɛ and tgδ) of composites is the result of change of polymer matrix macromolecules molecular mobility and its effect on interfacial interaction with filler. The electro active polymeric films and compositions on their basis are used as sensitive elements, dosimeters, sensors in many branches of industiy, sensor electronics, ecology, etc.[l] Therefore, the study of their electroactive dielectric, sensor properties as well as establishment of interrelation of these properties with structural peculiarities, preparation technology, filling techniques, polarization the methods are the urgent. [2] It should be noted that many properties of composite materials are determined by interfacial interaction in polymer - filler system and its mechanism understanding will allow modification or prediction of their operating characteristic. [3] The present work object was the determination of interrelation between the dielectric properties and interfacial interaction polymer-filler.
Developing of an algorithm for temperature control of TLD systems
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Camgöz, Y.; Bayburt, M.; Camgöz, B.; Bölüm Yok
Radiothermolyuminescence of the elektroaktivity composites polymer-piezokeramiks
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Kuliev, M. M.; Ismayilova, R. S.; Bagirov, M. A.; Bölüm Yok
The purpose of present work is the investigation of radiothermoluminescense (RTL) of polymer- piezoceramics composites to study structural transitions, particularities of charge stabilizations in composites dependence on degree of the filling (up to 50% vol.) and y - radiation dose (up to 3 -10(4) Gy). These researches allow to get information on intensities of relaxation processes in multiphase system. It is shown, that with increase of dose of γ- irradiation the nature of change of temperature of the first maximum Tm for PEHD and its composites significantly differs. We suppose, that this is connected with shallow impurities formed by filler particles. Actually, the activation effective energy of low temperature γ- processes decreases with increasing of filling degree. It is observed, that dependencies of intensities of low temperature maximum and values of effective density of electret charge on volume content of piezophase practically coincide.
The radiation-chemical removal of phenanthrene from aqueous solutions and moddeling of removal mechanism
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Abdullayev, E. T.; Ibadov, N. A.; Suleymanov, B. A.; Gurbanov, M. A.; Bölüm Yok
The radiolytic decomposition of phenanthrene in water solutions under y-irradiation was investigated. Phenanthrene was chosen as a prototypical PAHs because of its association with most petroleum products and as usual is produced during petroleum refining.
Determining profile of dose distribution for Pd-103 brachytherapy source
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Camgöz, B.; Yeğin, G.; Kumru, M. N.; 103959; Bölüm Yok
Radioisotope method researches of pharmaceutical preparates
(Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Khujaev, S.; Sultanov, A.; Aliev, Kh.; Nazarov, E. A.; Akobirkhodjaeva, G. S.; Bölüm Yok

Browse

Recent Submissions