bluuebunny/crossref_metadata_2025 huggingface dataset:
IMPROVING GROUND THERMAL VACUUM TESTING FOR SMALL SATELLITES OF THE "AIST" FAMILY
Authors:   Samara National Research University, Samara, Russia, Tkachenko Sergei I. , Salmin Vadim V. ,   Samara National Research University, Samara, Russia, Tkachenko Ivan S. ,   Samara National Research University, Samara, Russia, Safronov Sergei L. ,   Samara National Research University, Samara, Russia, Kaurov Ivan V. ,   Samara National Research University, Samara, Russia, Korovin Maksim D. ,   Samara National Research University, Samara, Russia, Ivanushkin Maksim A. ,   Samara National Research University, Samara, Russia, Volgin Sergey S. ,   Samara National Research University, Samara, Russia
Published: September 2016

The purpose of this study is to perform an analysis of the process of experimental testing of the thermal control system of the “AIST” small satellite, using the computer simulation of the satellite’s flight in the “TERM” software package. Based on the telemetry data, obtained by the Samara University satellite ground control center, actualized parameters of the ground testing process were proposed. The ground testing parameters were verified by calculation of the satellite’s panels temperatures using the “ANSYS Thermal” software system both for the initial conditions obtained from the ground testing documentation and the ones that were proposed after the analysis of the thermal flow onthe satellite.
STUDY OF OSCILLATORY PROCESSES IN THE ONE MODEL OF ELECTROCHEMICAL REACTOR
Authors:   Samara National Research University, Samara, Russia, Firstova Natalia , Shchepakina Elena ,   Samara National Research University, Samara, Russia
Published: September 2016

The paper deals with the study of the features of oscillatory processes in the electrocatalytic reaction mechanism underlying the electrochemical reactor. The conditions for the existence of several types of oscillations (small amplitude harmonic oscillations, relaxation oscillations and oscillations of transitional type) is obtained.
EXPERIMENTAL STUDY OF THE OPTICAL TRANSFER FUNCTION (OTF) AND SPECTRAL ACCURACY OF THE IMAGING HYPERSPECTROMETER BASED ON THE OFFNER SCHEME
Authors:   Image Processing Systems Institute - Branch of the Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Samara, Russia, Blank Veronika A. ,   Samara National Research University, Samara, Russia, Skidanov Roman V. ,   Image Processing Systems Institute - Branch of the Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Samara, Russia,   Samara National Research University, Samara, Russia
Published: September 2016

We deal with the imaging spectrometer based on the Offner scheme. We define the optical transfer function of the imaging spectrometer based on the Offner scheme. We define the spectrum reconstruction error for red LED.
DATA FORMATION AND PROCESSING IN FORMAL CONCEPT ANALYSIS: SUBJECTIVE ASPECTS
Authors:   Institute for the Control of Complex Systems, Russian Academy of Science, Samoilov Dmitriy E. ,   Samara National Research University, Samara, Russia, Smirnov Sergey V. ,   Institute for the Control of Complex Systems, Russian Academy of Science
Published: September 2016

The paper gives a brief overview of the subjective aspects of data formation and processing in Formal Concept Analysis. It is shown that the fundamental cognitive scaling procedure that allows a different interpretation, introduces new information into the analysis and the analysis is not correct in the general case without paying the proper attention to this information. The relationship between the objects properties that arises from the use of various types of scales and that need to be noted, is considered.
A HEURISTIC APPROACH TO THE VERIFICATION OF ISOMORPHIC GRAPHS
Authors:   Togliatti State University, Togliatti, Russia, Sayfullina Elena F.
Published: September 2016

A heuristic approach to the verification of isomorphic graphs is described in this work. The approach is a sequential verification of the graph characteristics which are invariants. The results of computational experiments are described. The aim of experiments is to determine which of the comparative sequences (for graph invariants values) are more efficient for graph isomorphism verification.
CLASSIFICATION OF TEXT DATA FROM THE SOCIAL NETWORK TWITTER
Authors:   Samara National Research University, Samara, Russia, Rytsarev Igor A. , Blagov Alexander V. ,   Samara National Research University, Samara, Russia
Published: September 2016

Social networks play an important role in the modern world, and it is important to define the important and popular topics discussed. This article deals with data collection from the social network Twitter, and further clustering and classification of the collected data.
ON THE 50TH BIRTHDAY OF PAVEL G. SERAFIMOVICH
Authors:   Samara National Research University, Samara, Russia, Kolomiets Eduard I.
Published: September 2016

The article briefly describes the scientific and pedagogical achievements of associate professor, candidate of physical and mathematical sciences Pavel Grigorievich Serafimovich.
FEATURE SELECTION IN THE EFFECTIVENESS RESEARCH OF A TRAINING PROGRAM FOR PATIENTS WITH THE ATRIAL FIBRILLATION
Authors:   Samara National Research University, Samara, Russia, Kutikova Viktoriya V. , Gaidel Andrey V. ,   Samara National Research University, Samara, Russia,   Image Processing Systems Institute, Russian Academy of Sciences, Samara, Russia, Khramov Alexander G. ,   Samara National Research University, Samara, Russia,   Image Processing Systems Institute, Russian Academy of Sciences, Samara, Russia
Published: September 2016

We investigated training therapeutic program effectiveness of the school “Stop a Stroke”, which aimed at reducing a risk of a stroke for patients with the atrial fibrillation. On the basis of two feature selection methods using a criterion of the discriminant analysis to determine the best feature subset, we concluded that patients, who trained at the school, in contrast to patients, who have not received training, take anticoagulants for a long time and have a higher level of knowledge about the atrial fibrillation.
Microseismic Wave Measurements to Detect Landslides in Bengkulu Shore with Attenuation Coefficient and Shear Strain Indicator
Authors: Farid Muhammad
Published: September 2016

It has been detected that the condition of landslides that occurred in Bengkulu Shore can change the position of the shoreline. This research aimed to: (1) calculate of shear strain (γ) and attenuation coefficient (ά) value  based on microseismic data in coastal areas that experienced landslides; (2) determine the correlation between levels of landslides with  shear strain  and attenuation coefficient value (3) determine the correlation between the shear strain and attenuation coefficient value. Microseismic data were processed and analyzed quantitatively using the Horizontal to Vertical Spectral Ratio method (HVSR) to obtain the ground vibrations resonance frequency (fo) and amplification factor (A). Shear strain value was calculated from the of fo, A and Peak Ground Acceleration (αmax) value. Peak Ground Acceleration value was calculated based on 100-year period of recorded earthquake data.  Attenuation coefficient was calculated based on the equation (2). The results of study showed that the value of shear strain in the coastal areas varied from 1.0 × 10-4 to 3.6 × 10-3,  in accordance with the conditions of landslides. The attenuation coefficient value varied from 0.005 to 0.020.  Level of landslides that occurred varied from moderate, to very severe. There was a tendency that the more severe the landslide level,  the greater the shear strain and attenuation coefficient value were.
Methods and applications of label-free cell-based systems
Authors: Wiest Joachim
Published: September 2016

Label-free monitoring of living cells is used in various applications such as drug development, toxicology, regenerative medicine or environmental monitoring. The most prominent methods for monitoring the extracellular acidification, oxygen consumption, electrophysiological activity and morphological changes of living cells are described. Furthermore, the intelligent mobile lab (IMOLA) – a computer controlled system integrating cell monitoring and automated cell cultivation – is described as an example of a cell-based system for microphysiometry. Results from experiments in the field of environmental monitoring using algae are presented. An outlook toward the development of an organ-on-chip technology is given.
Substitution of Local TiO2 on the Synthesis of Li4Ti5O12 (LTO) for Anodes Lithium Ion batteries
Authors: Priyono Slamet
Published: September 2016

Substitution of local TiO2 on the synthesis of Li4Ti5O12 for anodes lithium ion battery with solid state reaction method had been done. This study aimed to substitute raw materials TiO2 and determine the length of sintering time. Synthesis was done by mixing the raw materials like local TiO2 and LiOH.H2O in a stoichiometric then milled for 15 hours followed by calcination at a temperature of 600oC with sintering time of 2 hours for each samples. Sintering was done by varying the length of sintering time i.e. 4, 6 and 8 hours at a temperature of 850 °C. In this study the effect of sintering time on the material characteristics and performance of battery cells studied in detail. The characterization was conducted by the XRD to determine the structure and the LTO phases, SEM/EDX test to determine the morphology, surface topography and composition of all samples. PSA test was performed to determine the particle size while battery cell performance was tests with automatic charge-discharge battery cycler. From characterization found that the maximum length of time that is resistant to sintering samples 6 hours. The resulting active material has an LTO phase with spinel crystal structure simple cubic, but not produced a single phase, there are some impurity phases. The results of SEM/EDX provides irregular morphology, have pores, many impurities and varying sizes. Charge-discharge measurement showed that optimum sintering was got at 6 h which gave specific capacity about 50 mAh/g.
The role of SiC on the Desorption Temperature of Mg-based Hydrogen Storage Materials Prepared by Intensive Milling Method
Authors: Jalil Zulkarnain
Published: September 2016

Magnesium, theoretically, have the ability to absorb hydrogen in large quantities (~ 7.6 wt%). However, the kinetic reaction is very slow, thereby hindering the application of magnesium for hydrogen storage material. In this paper, we reported a series of preliminary studies on magnesium inserting with silicon carbide (2 wt%)obtain by mechanical milling method. The vibratory mill type apparatus was used for 180 hours. As the results, structural characterization by XRD showed that the crystallite size after milling for 180 hours decreased around tens nanometer. It was also found that the desorption temperature for the sample after 180 milling inform us that the material decomposed at 330°C. It can concluded that Mg catalyzed with 2 wt% of silicon carbide (SiC) can be prepared by vibratory ball milling. 
Numerical Study of Plasmon Resonance Silver Nanoparticles Coated Polyvinyl Alcohol (PVA) using Bohren-Huffman-Mie Approximation
Authors: Djuhana Dede
Published: September 2016

In this study, we have investigated the LSPR spectra of the silver nanoparticles (Ag-NPs) coated by polyvinyl alcohol (PVA) by means of a numerical study using Bohren-Huffman-Mie (BHMie) approximation. The LSPR of Ag-NPs shifted to red-shift as the diameter size of Ag-NPs and the thickness of PVA increased. The peak of the LSPR spectra exponentially increased as the thickness increased. Interestingly, there have three characteristic of the LSPR spectra, small, intermediate, and large diameter. In small diameter, the dipole resonant mode contributed to the LSPR spectra while in large diameter, the LSPR spectra originated from the quadrupole resonant mode. In contrast to intermediate diameter, the LSPR spectra originated from the competition between the dipole and the quadrupole mode. For this reason, at small and large diameter the LSPR peak has one peak and increased then until a certain thickness showed constant. Different at intermediate diameter, the LSPR peak appeared more one peak with major peak increased then until a certain thickness trend to decrease and minor peak followed at small diameter behavior.
Effect of Methylammonium Iodide (CH3NH3PbI3) Perovskite Concentration on the Performance of Perovskite Solar Cell
Authors: AL-she’irey Altaf Yahya
Published: September 2016

The effect of Methylammonium Iodide (CH3NH3PbI3) perovskites (MIP) concentration on the performance of perovskites sensitized solar cell (PSC) was studied. Three MIP concentrations, namely 0.2, 0.4, and 1.0 M were prepared. In this study PSC with a sandwich structure of ITO/TiO2/ MIP /electrolyte/ Pt film was fabricated for this purpose. It was found that power conversion efficiency (PCE) increased with the increasing the concentration of MIP, from 0.01 to 0.21 % as the concentration increase from 0.2 to 1.0 M. Photoluminescence (PL) study showed that the increase of the MIP concentration decrease therecombination of carrier in the device. Electrochemical impedance spectroscopy (EIS) analysis also shows that with the increased of MIP concentration results in the decreased of the Rct due to the improvement of the carrier transport in the devices. 
Transmission Electron Microscopy Study of Magnetic Domain of Cobalt-Samarium Thin Films Fabricated Using DC Magnetron Sputtering Technique
Authors: Amiruddin Erwin
Published: September 2016

Alloys of cobalt samarium (Co-Sm) in the form of thin films were fabricated using dc magnetron sputtering technique. The films were fabricated as a function of samarium concentration ranging from 0 to 28 at.% in order to investigate the relationship between microstructure, coercivity and magnetic domain structure. Magnetic domain structures in the films have been studied by Lorentz microscopy using transmission electron microscopy (TEM). In this technique, the TEM was operated in the defocused mode. The results show that the magnetic image of Co90Sm10 film has fairly coarse structure with magnetization ripple and the domains ranging over 200-300 nm. The domain size is much larger than the grain size of Co90Sm10 film. The “multiparticle” or interaction domains suggested that there is strong exchange coupling between the magnetization of the neighbouring grains inside each of them. The hysteresis loop for this film shows a small coercivity with high magnetization value and high loop squareness, indicating a greater proportion of magnetic material. 
Preparation and Characterisation of PVdF-LiBOB-Based Solid Polymer Electrolyte
Authors: Rina Ratri Christin
Published: September 2016

Electrolyte plays a key role in lithium-ion battery system. Safety and reliability factor was the main background of the development of solid polymer electrolyte as a substitute the conventional electrolyte in liquid form. Preparation and characterisation of a polymer electrolyte system based on lithium bis(oxalato) borate or LiBOB salt and PVdF as the host matrix has been performed. LiBOB salt and PVdF polymer were dissolved in DMAC solvent followed by solid polymer electrolyte forming by means of doctor blade method. The membranes obtained were characterised by FT-IR, XRD, and EIS. It was shown that the electrolyte exhibited higher room ionic conductivity with the increase of salt concentration, with highest conductivity value of 1.22 × 10-6 Scm-1 for 70% LiBOB concentration.

 
Effect of Co-Ti Substitution on Magnetic Properties of Nanocrystalline BaFe12O19
Authors: Handoko Erfan
Published: September 2016

The synthesis of nanocrystalline BaFe12-2xCoxTixO19 with variations of x (x = 0, 1, 2, and 3) have been investigated. The formation of polycrystalline samples that the cationic of Co2+ and Ti4+ in Co-Ti substituted Fe in BaFe12O19 ferrites structure were prepared by solid state reaction method. The crystal structure, microstructure, and magnetic properties were characterized using powder X-ray diﬀraction, scanning electron microscope (SEM) and permagraph meter, respectively. The results show that the nanocrystalline BaFe12-2xCoxTixO19 has single phase with polycrystalline structure, the grain size decrease by doping, the coercivity (Hc) and saturation magnetization (Ms) decrease with increasing Co-Ti substitutions. 
Effect of Growth Temperature on ZnO Nanorod Properties and Dye Sensitized Solar Cell Performance
Authors: Ali Umar Marjoni Imamora
Published: September 2016

Nanostructure of semiconductor materials zinc oxide (ZnO) is widely used in fabrication of solar cell devices. The performance of such devices is strongly depending on the nanostructures of the thin films used. In this paper reports the effect of growth temperature during synthesis of one-dimensional (1-D) anatase ZnO nanorod arrays through hydrothermal process facing their structure, morphology, and optical properties. The ZnO nanorod was first synthesized use the solution concentration and time fixed at 0.04M and 1 hour. The growth temperature were varied from 70, 80, 90 and 100 °C. The effect of growth temperature on the structural, morphology, and optical absorption of ZnO nanorod were studied by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and UV–vis spectroscopy. The regularity, diameters, heights, and surface densities of the ZnO nanorods were increased with the growth temperature.The optimum results of FESEM characterizations showed that the grown ZnO nanorods have diameters of 64.14 ± 8.3 nm, heights of 363.72 ± 34 nm and surface densities of 182 numbers/µm2 which was obtained at temperature of 90 ˚C. The optimum ZnO nanorod film was utilized as photo anode in dye sensitized solar cells. The DSSC yielded Jsc of 0.86 mA/cm2, Voc of 0.49 V, and FF of 38 %, resulting in PCE of 0.16 %.

 
Cyclic Voltammometry of Binderless Activated Carbon Monoliths based supercapacitor from Mixtures of Pre-carbonized of Fibers of Empty Fruit Bunches and Green Petroleum Coke
Authors: Awitdrus Awitdrus
Published: September 2016

Binderless activated carbon monoliths (BACMs) prepared from mixtured of pre-carbonized of fibers of oil palm empty fruit bunches (EFB) and green petroleum coke were used for preparing the carbon based supercapacitor cells. The symmetrical supercapacitor cells were fabricated by using two BACMs electrode prepared for each selected holding time of activation and various compression pressure. The electrochemical behavior of supercapacitor cells were measured at room temperature by using cyclic voltammetry (CV) technique. The maximum specific capacitance (Csp) of the cells values were 35.9 and 82.5 F/g for holding time of activation of 1.5 and 2 h, respectively, at the compression pressure of 7.5 metric tons. 
Performance Analysis of Solar Updraft Power Generator in Indonesia
Authors: Hafizh Hadyan
Published: September 2016

Solar updraft power generator (SUPG) is a renewable energy facility capable of harnessing the solar energy. The first large prototype of SUPG was built in 1980’s in Manzanares, Spain to evaluate the projected performance of the facility and to serve as verification tools for future power simulator development. In this paper, the performance of a solar updraft power generator is assessed using the developed mathematical model. The model is validated by comparison with experimental data of Manzanares SUPG. The validated model is then used to calculate the amount of energy produced in seven selected locations in Indonesia. The selected cities in Indonesia exhibited a higher average monthly energy production compared to those in Manzanares. In particular a site like Kupang, would generate two times the energy of the Manzanares SUPG. The power production is sufficient for the needs of this isolated area in Indonesia and has the potential to solve the energy issue.
Numerical Studies on Pinching Radius Effects to Current Densities of NX2 Plasma Focus
Authors: Nawi Nina Diana
Published: September 2016

The pinching radius of ion beams effects are observed throughout the current densities obtained in the truncated end of NX2 plasma focus anode. The numerical experiments were carried out using RADPF code operating from 11 to 14kV of applied voltage using Neon as the filling gas with range of pressure 1.0–5.0 Torr. Energy beam acquired is studied with reference of the pinch radius and current densities. The theoretical calculations are studied. The radial speed will describe the energy transferred and will contribute to the drive parameter. The pinching radius of ion beam generated from the system plays an essential role in the determination of current densities that affects the energy beam produced. The highest energy beam, 156 J obtained at 4.0 Torr, where the current densities 7.3x109 Am-2 and pinch radius 1.68mm.
Effect of Input Amplitude to Power Amplification in Various Orientation of Ring Resonator
Authors: Hairi Haryana Mohd
Published: September 2016

Photonic ring waveguide resonators have great potential applications in wavelength filtering, switching, modulation and multiplexing.  The response of coupled ring resonators can be designed by using various coupling configurations. Particularly, ring resonators can be used as wavelength filter when the wavelength fits a whole multiple times in the circumference of the ring.  In this paper, we investigate the effect of input amplitude to power amplification in four ring resonator configurations and vary the input amplitude on five different wavelengths.  With OptiFDTD Photonics Simulation Software V8.0, the results show the intensity phenomenon of filtering in optical circuit.

 
Comparison of Fabry – Perot Filter of Fiber Bragg Grating for Visible and Ultraviolet Spectra
Authors: Sutriyono Didik Puji
Published: September 2016

The use of Fiber Bragg Grating (FBG) as Fabry – Perot filter has been successfully developed for visible light and ultraviolet spectra. The characteristic of FBG is analyzed by using computational model with Transfer Matrix Method by order 2 with the coupled mode theory. The reflectivity, length of grating and bandwidth are parameters to determine the performance of FGB with laser source of 1 mW for 250 – 350 nm, ultraviolet and 380 – 780 nm, visible light. The simulation is also carried out by various grating from 0.5 cm – 9.5 cm with increment step of 1 cm. The simulation result showed that there is the filter discrepancy for maximum peak. This design of FGB can be used as a filter. Only selected wavelength is allowed to transmit the signal until the end of the optical fiber.
Left-Handed Metamaterial Structure for Side Lobe Suppression of Microstrip Array Antenna
Authors: Zulkifli Fitri Yuli
Published: September 2016

In this paper, a Left-handed Metamaterial (LHM) structure is designed for side lobe suppression of a microstrip array antenna at frequency 2.8-3.1 GHz. The LHM structure is placed at the top of the microstrip array antenna with a space or gap between them. Side lobe suppression is very important for Radar system which needs antenna with high performance of its radiation properties. The linier array microstrip antenna consists of 4x1 elements. The simulation result using CST microwave studio shows that the Side Lobe Level (SLL) has been suppressed from -8.93 dB to -15.86 dB at phi = 0 while the measurement result shows suppression from -6.6 dB to -10.75 dB. Both simulation and measurement result shows a side lobe suppression using LHM structure.
The Effect Of Boric Acid On Corrosion Of Ss 304 As Pwr Pressurizer Material
Authors: Bahar Febrianto
Published: September 2016

The pressurizer is the component in the reactor coolant system which provides a means of controlling the system pressure. The pressurizer has a function to keep the operational pressure of reactor coolant system in set point condition. For controlling primary coolant system pressure, the pressurizer has pressurizer spray, heater, safety relief valve and instrumentation to control level and pressurizer. The purpose of this study is to see the effect of boric acid, lithium hydroxide and temperature on SS 304 as PWR pressurizer material.The method that used in this research is to observe the corrosion rates of pressurizer material in several boric acid and lithium hydroxide concentration at several temperature conditions using Potentiostat. Tests were conducted in 28, 60, 80,and 100 °C in 2000, 2500, 3000 ppm boric acid and addition 2.0 and 2.5 ppm lithium hydroxide. The pressurizer material corrodes in solution containing boric acid solution. The corrosion rates increased if boric acid solution concentration and temperature also increased. The results showed that that corrosion rate for the material were very small and the highest corrosion rate occurred in 3000 ppm boric acid concentration at 80 °C ,that is 4.5913 x 10-1 mpy.The corrosion rates increased until temperature 80 °C, but increasing the temperature from 80 °C to 100 °C decreased the corrosion rates  from4.5913 x 10-1 to 4.5264 x 10-1mpy.  Lithium hidroxide addition in boric acid containing media generally decreased SS 304 corrosion rate as P W R  pressurizer material.K.
Strength Based Numerical Approach Constitutive Material Prediction Of Spot Welded Joints Of Steel
Authors: Budiarsa I Nyoman
Published: September 2016

The deformation of spot welded joints is challenging research problem due to the complex nature of the structure. One major problem is to characterize the materials properties. The elastic-plastic material parameters and the fracture parameters of materials can be readily determined when standard specimens are available, however, for a spot welded joint, standard testing is not applicable to characterize the heat affected zone (HAZ) and the weld nugget due to their complex structure and small size. This has opened up the possibility to characterize the material properties based a dual indenter method to inversely characterize the parameters of the constitutive material laws for the nugget, HAZ and the base metals. In a mixed numerical-experimental approach, the load-deformation data of the material is used as input data to a finite element (FE) model that simulate the geometry and boundary conditions of the experiment.  With indentation tests, the local plastic properties can be calculated by solving the inverse problem via finite element analysis by incrementally varying properties in 3D modeling to find a similar simulated load–displacement curve as compared with experimental one. The approach will then be used to test different welding zones and the material parameters thus predicted used to simulate the deformation of spot welded joints under complex loading conditions including tensile shear and drop weight impact tests. The evaluation based on numerical experimental data showed similar accuracy to the continuous indentation curve approach.
Proposed Testing Quality Of Silicon Nitride In Nuclear Application By Ceramography
Authors: Tirta Nindhia Tjokorda Gde
Published: September 2016

The components in nuclear  application should ensure the safety during operation. Testing and investigation should be performed to ensure the quality of every component. This report propose ceramography technique for testing of silicon nitride in nuclear application. Ceramic material is known brittle therefore not possible to hold by using vice as usual used in metal during cutting. Since ceramic is very hard, the cost for cutting, grinding and polishing required high cost due to utilization of diamond. Special techniques should be employed during observation bay using optical microscope because ceramic are not reflect the light. Ceramic is mainly known since their high chemical resistance therefore difficult to etching by using chemical solution. A unique respond of ceramic due to indentation make the indentation technique become part of ceramography. Indentation process requires a flat sample in order valid result to be obtained, and this can be achieved by special technique during grinding and polishing. This research introduce of ceramography process that was successfully done on Si3N4, from preparation of the specimen, microstructure observation, the respond on indentation, strength, and porosity investigation   The results showed that the fluorescent dye penetrant under ultra violet source of light the defect in Si3N4 was easily observed therefore is suitable to be proposed as a technique for testing the quality of silicon nitride component in nuclear application.[P1] 

 [P1]

The revised sentence and added
Evaluation Of Radionuclides Release Estimation Of Power Reactor Using Scdap / Relap
Authors: Pane Jupiter Sitorus
Published: September 2016

Incident of radiation release to the environment is important event in reactor safety analysis. Numerous studies have been conducted using various computer codes, including SCDAP/RELAP, to calculate radionuclide releases into the reactor coolant during severe accident. This paper contains description of calculation results of radionuclide release from reactor core to primary coolant system in a1000 MW PWR reactor with the aim to study behavior of radionuclide releases during severe accident. The calculations using SCDAP/RELAP was done by assuming that there has been a station black out which ends up with some vapor released into the containment. As a result, the water level in core was reduced up to a level where the core is no longer covered by water. The uncovered core heats up to certain temperature where the oxidation of the cladding started to occur.  Afterwards the oxidation generated heat made fuel melting temperature reached and as consequences the release of radionuclide to the primary coolant.  The calculations show that in parallel with the increasing of fuel temperature, the radionuclide releases into the gap through diffusion started at time of 2000seconds after initial simulation but with a neglected concentration. Subsequently at the time of 29200seconds, the temperature reached more than 1000 K and the oxidation of the Zr-cladding material occurred which accelerated the fuel temperature increase and as well as radionuclide release. At34000seconds, maximum temperature of core reached 2800 K and radionuclide release into the primary cooling system started. At this time, accumulated dissolve fission product reached amount of 74.5 kg, while the non-condensable radionuclide reached 122 kg. However, these value need to be investigated further.
Analysis On The Change In Neutronic Parameters Due To Mispositioning Of Fuel In The Ap1000 Core
Authors: Susilo J.
Published: September 2016

AP1000 on the first cycle operation uses three types of UO2 fuel enrichments that are 2.35 w/o, 3.40 w/o and 4.50 w/o. To compensate excess reactivity, AP1000 uses an Integrated Fuel Burnable Absorber (IFBA) and a PYREX absorber as additional compensator to the boric solution in the moderator. IFBA is a burnable absorber made from ZrB2 which is  integrated into the UO2 fuel. Human errors, such as fuel misposition, could happen when operators load fuel assemblies into the reactor core. For evaluating the design performance of AP1000, analysis on the change of neutronic parameters due to this fuel mispositioning need to be done. Analysis was performed on the reactor at hot zero power condition (HZP), beginning of cycle (BOC), and zero xenon condition with several cases of mispositioning between two adjacent fuels. Neutronic parameters, mainly the k-eff and power factor distribution will be derived from SRAC2006 computer code module of CITATION. One of the inputs required is fuel lattice macroscopic cross-section data, which are generated by PIJ module. These calculations performed condensation energy group of 107 into 10 groups with JENDL - 3.3 library cross section data. From the analysis, it  can be concluded that misposition of the fuel in the first cycle of AP1000 core will result in very small change to the neutronic parameters. This very small change can not reduce the performance of the core.
Analysis Of Doppler Reactivity Coefficient On The Typical Pwr-1000 Reactor With Mox Fuel
Authors: Madi Rokh
Published: September 2016

Doppler coefficient is defined as a relation between fuel temperature changes and reactivity changes in the nuclear reactor core. Doppler reactivity coefficient needs to be known because of its relation to the safety of reactor operation. This study is intended to determine the safety level of the  typical PWR-1000 core by calculating the Doppler reactivity coefficient in the core with UO2 and MOX fuels. The  typical PWR-1000 core  is similar to the PWR AP1000 core designed by Westinghouse but without Integrated Fuel Burnable Absorber (IFBA) and Pyrex. Inside the core, there are  UO2 fuel elements with 3.40 % and 4.45 % enrichment, and MOX fuel elements with 0.2 % enrichment. By its own way, the presence of Plutonium in the MOX fuel will contribute to the change in core reactivity. The calculation was conducted using MCNPX code with the ENDF/B- VII nuclear data. The reactivity change was investigated at various temperatures. The calculation results show that the core reactivity coefficient of both UO2 and MOX fuel are negative, so that the reactor is operated safely.
Sequence Analysis After Core Damage To Determine Safety Level Of The Ap1000
Authors: Sony Tjahyani D. T.
Published: September 2016

In safety analysis, one of important parameters is core damage as this occasion can cause fission products to release. In that regard, all possible sequences afterward must be analyzed in order to ensure that all events have been considered, because each sequence has different consequence. The objective of this research is to determine the probability of event sequences after core damage so safety level of AP1000 could be known. The AP1000 reactor is chosen as the research object because currently many units are under construction. In this research the accident sequences were analyzed by using event tree, and the probability of top event was calculated by fault tree analysis. Meanwhile, the failure rates of component or operator action were collected from IAEA documents and also published documents of the AP1000 from Westinghouse Inc. The analysis results show that probability of event sequences which causes fission product release is ranging from 10-2to 10-26 and the total probability is 3,48 x 10-2. Based on this analysis, it can be concluded that the AP1000 has high safety level because the probability of event sequences leading to fission product release is small. Moreover, if these results are joined with core damage probability then probability of fission product release would be less than 10-9.
Biological Screening of Eichornia crassipes against Different Pathogenic Microbes: An In Vitro Study
Authors: RehmanOng Rubina , Shahzad Aslam Muhammad , Choudhary Bashir Ahmad , Uzair Muhammad , Subhan Ijaz Abdul , Syarhabil Ahmad Muhammad ,   Department of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan,   School of Bioprocess Engineering, University Malaysia Perlis, Kompleks Pusat Pengajian, Jejawi 3, 02600 Arau, Perlis, Malaysia,   Department of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan,   Department of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan,   Department of Pharmacy, Bahauddin Zakariya University, Multan, Pakistan,   School of Bioprocess Engineering, University Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, 02600 Arau, Perlis, Malaysia
Published: September 2016

The present research is a biological screening ofEichornia crassipes(Pontederiaceae). Dichloromethane and methanol extracts of the whole plant were investigated for their antibacterial, antifungal, phytotoxic, and cytotoxic activities. The antibacterial activity was evaluated using agar well-diffusion method againstBacillus subtilis, Staphylococcus aureus, Escherichia coli, Shigella flexneri, Pseudomonas aeruginosa,andSalmonellatyphi. The antifungal activity was evaluated using the agar tube–dilution method againstCandida albicans,Candida glabrata,Aspergillus flavus,Microsporum canis,andFusarium solani. The phytotoxicity activity was determined using Lemna bioassay againstLemna minor. Brine shrimp– cytotoxicity assay was determined against brine-shrimp larvae. Dichloromethane extract exhibited significant phytotoxicity (100% growth regulation) at 1,000 μg/ml concentration againstLemna minorwhereas methanolic extracts showed moderate (75% growth regulation) phytotoxicity at the same concentration. Methanolic extract showed cytotoxicity at the highest level of dose whereas dichloromethane extract showed no activity having Etoposide as standard drug. Both of the extracts have nonsignificant antifungal and antibacterial activity.
Źródła i konsekwencje wzrostu elastyczności rynku pracy
Authors: Łucjan Izabela
Published: September 2016

The transformation of the modern world of work towards the information society,
knowledge society, have a rapid course. These transformations take on a global
character, and the most of their consequences are negative. One of them is to base
the employment process on the flexible solutions. Nowadays, neither the high level
of education, nor the high competences are not enough to give confidence in finding
employment. The contemporary labour market is characterised by unstableness,
‘elusiveness’ and, above all, flexibility. The challenge has become a flexible company,
which employs only flexible workers within the framework of flexible forms
of employment. Despite its universality, the concept of flexibility still remains inconsistent
and vaguely defined.
Prekariat – nowe zjawisko na rynku pracy w Polsce
Authors: Cymbranowicz Katarzyna
Published: September 2016

Studies of the scale of unemployment in Poland and in Europe conducted in recent
years lead to the conclusion that one of the largest and growing problems of the
modern labour market is the unemployment rate among young people. An unfavourable
phenomenon related to the problem that is increasingly appearing in public
debate is the rising unemployment of graduates. Therefore, it is important to attempt
to identify the phenomena in today's job market and one of them is the formation of
a new type of employee on the labour market, the member of the precarious class.
The analysis aims to present the origins, nature and scale of the precariat phenomenon
in Poland. The problem is described from the perspective of the labour
market position of a selected social group, i.e. young people entering the labour
market after finishing their education. The study attempted to identify factors that
affect this phenomenon and the characteristics confirming the sense of its separation
on the labour market.
Feminizacja prekariatu. Polska na tle innych krajów Europy
Authors: Polkowska Dominika
Published: September 2016

Precarity applies to people who, in order to survive, need to work in a low-quality job, which is uncertain, temporary, low-paid, with no prospect of promotion, no security and no contract. In this sense, the precariat is a category related mostly to the secondary segment of the labour market, according to the concept of a dual labour market. It is also the universal feature of Post-Fordism and the modern working conditions in which women, more often than men, are located in the ‘worst’segment of the labour market. In this context, it can be noted that since the beginning of the era of globalization, women start working particularly in those sectors that were more uncertain and unstable e.g. in services and trade. It was feminization in a double sense: there were more and more working women on the one hand, and on the other hand, the flexible jobs were undertaken usually by women. Most of these kind of jobs were precarity jobs. Precarity is combined with insecurity, which does not allow the people in this group to plan anything, and wages so low that they can’t afford a decent life. In the article I would like to prove that the threat of precariat is more probable for women than men. I present data related to precarity for Poland compared to other European countries (based on data from Eurostat and the OECD).
Funkcjonowanie samorządów pracowniczych w wybranych krajach realnego socjalizmu
Authors: Wdzięczak Janusz
Published: September 2016

The aim of the article is to present the attempts of establishing institutions of a system
of worker’s self-management in the selected countries of the so-called real socialism
system in Eastern Europe. The analysis considers three of those countries,
namely Yugoslavia, Poland and Hungary, whose experiences in participation of the
employees’ implementation were the most significant. Particular attention was paid
to the evolution of socialist regimes approach to workers’ self-management. The
paper tries to answer the question whether workers’ self-management posed a threat
to the socialist regimes persistence. The research method used in the study is an indepth
survey and analysis of literature and legal acts.
In the Margins of the Mind: Development of a Projective Research Methodology for the Study of Nursing Practice
Authors: Regan Mary , Liaschenko Joan
Published: September 2016

This article presents an original research method derived from the Thematic Apperception Test used in clinical psychology to understand human motivation and action. The research method is derived from the theory of projection, which states that humans will perceive stimuli in terms of their own expectations and motives and will credit others with their own attitudes, beliefs, traits, and dispositions. Projective techniques are one of a handful of methods that provide access to this type of knowledge since it resides below the level of consciousness. Use of this type of method in nursing research may be fruitful because of its capacity to make apparent the complex interplay between a clinician’s beliefs and the interpretation of meaning that motivates clinical action.
Croatian wine market, support policy and specific obstacles to wine exports
Authors: Lucijano Jakšić L , Njavro Mario , Hrvoje August
Published: September 2016

In this paper, analysis of Croatian wine sector in period 2006-2013 is conducted through the record of wine production, exports and imports together with Government support measures. In the light of Croatian EU membership together with opening of EU wine market and global wine market, recommendations for further discussion of support measures for small and medium winemakers are given.
Trajectories of agricultural modernization and rural resilience: some first insights derived from case studies in 14 countries
Authors: Knickel Karlheinz
Published: September 2016

In this paper, alternative trajectories of agricultural modernization and rural resilience are explored based on case studies in 14 countries. The analysis is to support discussions about the further development of agriculture at a time when the agricultural sector must respond to an increasing scarcity of natural resources, challenges like climate change, urbanization, demographic change, food security, consumer demands, distributional issues in food value chains and changing urban-rural relations. The discussion relates different trajectories of agricultural modernization to the multiple mechanisms underlying rural prosperity and resilience. The mainstream capital-intensive and technology-driven model of agricultural modernization is contrasted with more incremental, socially embedded and localised forms of development. Potential synergies between different modes of farm ‘modernization’, resilience and sustainable rural development are highlighted and a different future-oriented understanding of the term ‘modernization’ explored. The basis for the analysis are case studies in 14 countries (including Turkey and Israel). The key question asked is how actors are connecting economic, social and natural systems in the different cases and how the connections made (or not) point to different ideas about modernization. The conclusions focus on some current information needs of policy-makers: the links between different forms of farm modernization, rural development and resilience, and the implications for agricultural knowledge systems and the new European Innovation Partnerships. It is emphasized that local capacities for transdisciplinary research need to be strengthened and that more attention should be paid to addressing modernization potentials that are less mainstream. The paper seeks to foster discussions that help overcome simplistic viewpoints of what ‘modernization’ entails. It is based on an earlier review paper by Knickel, Zemeckis and Tisenkopfs (2014).
Characteristics of value based organic food chains: two cases from Slovenia
Authors: Prišenk Jernej , Borec Andreja
Published: September 2016

In the literature the value based food chains express two main characteristics: business relationships among strategic partners interacting in the supply chain are based on a written set of values and food products are differentiated from similar food products (Stevenson, 2009). To verify the first part of the definition the analysis of two organic food chains were carried out. For the analysis of business relationships and food quality communication in the food chain two different methodological approaches were used. For collecting the input data semi-structured interviews of various stakeholders were performed. The results of the analyzed case studies show the characteristics of value based food chains could be broader and more complex if some additional perspectives were considered.
Enigma Kejahatan dalam Sekam Filsafat Ketuhanan
Authors: Gultom Andri Fransiskus
Published: September 2016

Artikel ini membahas tentang problematika kejahatan dalam kaitannya dengan keberadaan Tuhan. Kejahatan yang kerap dihadapi manusia dalam hidup menjadi persoalan yang coba diruntut berdasar perspektif filsafat ketuhanan. Dalam artikel ini, adanya kejahatan yang terdapat di dalam sepanjang sejarah kehidupan manusia, menghadirkan pertanyaan mendasar tentang keberadaan Tuhan. Tuhan yang diyakini sebagai Yang Maha Baik dihadapkan dengan realita kejahatan dalam kontestasi ide filosofis. Terdapat empat tema pembahasan yang berawal dari pertanyaan-pertanyaan filosofis perihal relasi kejahatan dengan ketuhanan, yaitu: apa itu teodise? Apa itu kejahatan? Beranjak dari pertanyaan tersebut, penulis mendapati bahwa kejahatan merupakan suatu kenyataan yang disebut dengan enigma.  Kenyataan enigmatik yang dihadapi manusia dalam kehidupan tersebut memposisikan manusia sebagai subjek yang rentan (vulnerable subject) tatkala berhadapan dengan kejahatan. This article discusses about the problematics of crime in relation to the existence of God. Crimes that are often faced by humans in life have been problems that try tracing based on existence of god perspective. In this article, the crimes contained in the history of human life, presents a fundamental question about the existence of God. God is believed to be the Most Good confronted with the reality of crime in the contestation of philosophical ideas. There are four discussion themes which start from the philosophical questions regarding the relationship with Divinity crime, namely: what is it theodicy? What is crime? Moving on from these questions, the authors found that the crime is a reality called the Enigma. The fact of the Enigmatic faced by humans in the life has been positioned that humans as a vulnerable subject whenthey are dealing with crime.