bluuebunny/crossref_metadata_2025_split huggingface dataset:
Measurement of natural (40K, 226Ra and 232Th) and anthropogenic (137Cs) gamma radiation and radiological hazard assessment in beach sand samples collected from Ao Phrao at Koh Samet in Rayong province (Thailand)
Authors: Kessaratikoon P , Choosiri N , Boonkrongcheep R , Youngchuay U 
Published: September 2019

Abstract
In the present research, the main objectives were to measure and analyze the specific activities of natural (40K, 226Ra and 232Th) radionuclides in 30 beach sand samples collected from Ao Phrao after the Rayong oil spill disaster. This huge Petroleum Authority of Thailand (PTT) oil spill occurred on July 27, 2013, in the Gulf of Thailand nearby Ao Phrao at Koh Samet in Rayong province in eastern region of Thailand. At the same time, anthropogenic (137Cs) radionuclides accumulated in the studied area was also studied and presented. High-purity germanium (HPGe) detector with a massive lead shield, some standard reference material sources and gamma spectrometry technique, were used to measure and analyze all of the experimental results. The frequency distribution of specific activities of 40K, 226Ra, 232Th and 137Cs were also evaluated and found to be the asymmetrical distribution. The median values of 40K, 226Ra, 232Th and 137Cs were 173.55 ± 67.04, 10.76 ± 1.71, 6.35 ± 0.75 and 0.24 ± 0.10 Bq/kg, respectively. Furthermore, the associated radiological hazard indices for the studied area were calculated and compared to nationally and internationally recommended values. It was found that the beach sand samples from the study area provide no excessive exposures created from the oil spill for inhabitants. Moreover, the radioactive contour maps of the investigated area were also imaged and presented in this study. The data presented in the study are importance since they create the baseline of the radiological hazard data and mapping of the investigated area in the future.
Analysis of radiological hazards from surface soils in Khong Chiam and Sirinthon districts, Ubon Ratchathani province
Authors: Jitpukdee M , Quinram P , Kranrod C 
Published: September 2019

Abstract
The radiological hazards from natural radionuclides in soil at the border area between the northeast of Thailand and Laos were studied and evaluated. The 33 surface soil samples from Khong Chiam and Sirinthon districts in Ubon Ratchathani province were collected and measured the specific radioactivity (226Ra, 232Th and 40K). The radioactivity of all soil samples was analyzed from gamma ray spectrums using hyper-pure germanium detector. The results applied for calculating the radiological hazards which were radium equivalent activity (Raeq), absorbed dose rate (D), annual effective dose equivalent (AEDEout) and external hazard index (Hex). The experimental results obtained the radioactivity concentrations in a range of 10.64 to 46.67 Bqkg−1 with average value of 22.82 ± 3.59 Bqkg−1, 6.35 to 44.72 Bqkg−1 with average value of 15.49 ± 3.57 Bqkg−1 and 31.22 to 521.57 Bqkg−1 with average value of 130.44 ± 28.46 Bqkg−1 for 226Ra, 232Th and 40K, respectively. The calculation results of Raeq, D, AEDEout and Hex showed significantly lower than the radiological hazard levels which are recommended by the United Nations Scientific Committee on the Effects of Atomic Radiation. The results of this study reveal that people can live and travel along the border area in the northeast of Thailand.
Long-term cycling of 137Cs in Pinus Kesiya at Wat Chan Thailand
Authors: Itthipoonthanakorn T , Shaw G 
Published: September 2019

Abstract
Surface soil and above-ground parts of Pinus kesiya (Three-needled pine) were collected at Wat Chan pine forest to study cycling of 137Cs. Cs-137 derived from nuclear weapons tests up to 1963 was found to have accumulated at a shallow depth (<5 cm) in the forest soil. Calculated total deposition of 137Cs was in the range of previous studies and could be used as a reference for nuclear test deposition of 137Cs fallout in northern Thailand and nearby locations. Potassium in soil does not appear to be a good indicator for long-term radiocaesium cycling. Finally, ‘available’ stable caesium (133Cs) in the soil was found to be an appropriate indicator for studying uptake of 137Cs by Pinus kesiya at Wat Chan.
Elemental composition analysis in Sangyod rice by instrumental neutron activation analysis
Authors: Kongsri S , Kukusamude C 
Published: September 2019

Abstract
Sangyod Muang Phatthalung Rice is a traditional rice variety grown in the area of Phatthalung province for more than a hundred years. Sangyod rice is the first rice variety of Thailand that has been registered as Geographical Indication (GI). It is also good rice for anyone who is searching for good health. The concentrations of nine elements (Mg, Al, Cl, As, Br, K, Mn, Rb and Zn) in Sangyod rice, locally cultivated in four districts (Pak Phayun, Tamot, Pa Phayom and Muang) in Phatthalung province, were determined using instrumental neutron activation analysis (INAA). The method validation of INAA was verified by SRM 1568a Rice Flour. All elements were found to be in a good agreement with the certified values. The results were analyzed using analysis of variance and Tukey’s HSD test. There were no statistical differences in concentrations of Mg, Al, As, Br, K and Mn in rice from four districts. The concentrations of Cl, Rb and Zn found in rice were significantly different according to the cultivation region. Therefore, Cl, Rb and Zn were good characteristic indicators for Sangyod rice that could be applied to identify the geographical origins of rice.
Determination of tritium levels in tap waters collected from various regions in Thailand using liquid scintillation counting
Authors: Rittirong A , Noithong P , Hazama R , Sakuma Y , Saenboonruang K , Sudprasert W 
Published: September 2019

Abstract
Tritium can replace a hydrogen atom in water molecules since oxygen atom can react with tritium atoms to form water molecules the same way as for hydrogen atoms, potentially posing hazardous to consumers. This study aims to measure tritium activity concentrations in tap water samples collected from different regions in Thailand, (Phayao, Srisaket, Chanthaburi, Trang and Bangkok) in November 2018. The measurements of tritium activity concentrations were carried out by using electrolytic enrichment and low background liquid scintillation counting (AccuFLEX LSC-LB7), which had a sensitivity of less than 1 Bq/L. The data results of regional distribution of a tendency were discussed according to latitudes and longitudes of the collecting location. The measured tritium concentrations in tap water were in the range of 0.41 – 0.75 Bq/L. Specifically, the results showed that the tritium activity concentrations depended on location, with the highest value obtained from a tap water sample collected from the northern part of Thailand (Phayao). The results could be used as the baseline of tritium levels in tap water in each region of Thailand before building or operating the nuclear facilities such as the first nuclear power plant, fuel reprocessing or heavy water production facilities in the future.
Development of radiation imaging system for nutrient distribution in sapling
Authors: Tuanghirunwimol P , Jitpukdee M 
Published: September 2019

Abstract
Radioactive tracer in plant commonly uses X-ray films or imaging plate for study nutrient distribution, which cause radioactive waste. We developed a real-time imaging system for radiotracer in sapling to reduce a large number of samples and radioactive waste. The main components of the developed system consist of the radiation imaging detector, the mechanical part, and the operating software. We used 4 × 4 channel array of Silicon Photomultiplier (SiPM) model ArrayC-30035-16P from SensL coupling with plastic scintillator array of 3 × 3 × 5 mm3 pixels as a radiation imaging detector. The signals from the detector were amplified and noises discriminated then transfer to the operating software on a personal computer (PC). The area scanning unit and mechanical parts were modified from MicromakeCl 3D printer with customised control board and controlled by operating software on PC interfacing via USB to RS232. Furthermore, the LabVIEW base system control software was developed to control the movement of motors in X, Y and Z directions of the mechanical control board in associated with the counting signals transferring from the developed detector board. Each counted data from the scanning process was transformed into rainbow scale image. The developed system could measure a sample with a maximum size of 300 × 300 mm2, and the precision of motors was ± 0.1 mm. The control software is able to change parameters of the time for counting, a pitch of motors and scanning area of a sample. Finally, the developed system was tested by run through the process of radiotracer in the maize sapling growth for 30 hours. The result showed satisfactory rainbow color scale image of accumulation and distribution of radioactive tracer in sapling.
Error detection sensitivity test using complex errors on three patient-specific VMAT QA systems
Authors: Thongsawad S , Srisatit S , Fuangrod T 
Published: September 2019

Abstract
The purpose of this study was to investigate error detection sensitivity for three patient-specific volumetric modulated arc therapy (VMAT) quality assurance (QA) systems (Delta4, EPID-based dosimetry, and log file) with three possible scenarios. Ten patient-specific VMAT QA were randomly selected to test their error detection sensitivities. Artificial complex errors were introduced to the original plans then the QA tests were repeated. These errors were simulated into three possible scenarios: uncertainty, miss-calibration, and worst-case scenario. For uncertainty scenario, the random errors (σ) of multi-leaf collimators (MLC) at ± 2.0 mm and gantry angle at ± 2.0 degree were introduced. The systematic errors of +2MU, and the random errors of MLC and gantry angle at ± 2.0 mm and ± 2.0 degree were applied as a miss-calibration scenario. For worst case scenario, errors were integrated between systematic and random variation of MLC and gantry angle at 2±0.5 mm and 2±0.5 degree, respectively. The dosimetric agreements between QA tests on original versus artificial error plans were determined to investigate error detection sensitivity used gamma analysis with 3%, 3 mm criteria. EPID-based dosimetry showed the most sensitive QA tool to detect three possible scenarios. Log file was the second best method, whereas Delta4 was the worst method to detect three possible scenario errors.
Preliminary study of neutron tomography performance tested by a standard specimen
Authors: Wonglee S , Pornrungruengchok W , Chulapakorn T , Channuie J , Picha R , Liamsuwan T , Khaweerat S 
Published: September 2019

Abstract
The performance of neutron tomography facility at the Thai Research Reactor TRR-1/M1 is studied. Thermal neutron beams with a flux of 106 n/cm2/s are employed to radiate on a standard sample, so-called Strip B, in the test. The neutron irradiating on samples were detected by a neutron-to-photon conversion plate. After that, the low-energy photons were guided to a charge coupled device (CCD) to obtain a digital image. During the experiment, a rotation stage was used to rotate the sample in order to measure the attenuated/scatted neutrons at different angles with respect to the sample geometry. The angle-varied images were then processed via a reconstruction software to create a 3-dimension (3D) image (tomography). The result shows that an image of 0.5 mm-diameter cadmium wire could be observed by employing our facility, but the sharpness of the 3D image is still needed to be further improved.
Investigation of differences of phenomena of diffusiophoresis and thermophoresis from aerosol deposition in modified ART Mod 2 code
Authors: Vechgama W 
Published: September 2019

Abstract
Fission product behavior assessment in containment vessel (CV) is one of the important areas in safety analyses because the CV is the final release protection. Modified ART Mod 2 code is used to study aerosol deposition phenomena in the CV. From Phébus FPT experiments, the phenomena of diffusiophoresis and thermophoresis on wet condensers were occurred in the CV. The two phenomena are recognized to be the same thing. However, this is not a universal view on these phenomena, which are evaluated separately in the modified ART Mod 2 code. In previous study on the modified ART Mod 2 calculation of Economic Simplified Boiling Water Reactor (ESBWR) and Phébus FPT experiments, there was more diffusiophoresis than thermophoresis in the case of simulating single volume of the CV while there was more thermophoresis for multiple volume case. This research aim is to conduct a ceteris paribus sensitivity analysis of representative parameters affecting diffusiophoresis and thermophoresis namely aerosol size, pressure, and gas temperature, under different nodalizations in the modified ART Mod 2 code using the Phébus FPT experiments to investigate the differences. As a result, differences of gas temperature between atmosphere and wall in single volume most affect diffusiophoresis while differences of temperature between atmosphere and wall of multiple volumes most affect thermophoresis.
Assembly project management of a suspended conveyor
Authors: Blaga F S , Stănăşel I , Pop A , Hule V , Craciun D 
Published: September 2019

Abstract
Modern manufacturing systems are characterized by the fact that they integrate various machines and work equipment, industrial handling robots, industrial robots performing technological operations (welding, riveting, painting, etc.), transfer systems (conveyors, conveyor belts, automated guided vehicle -AGV), storage systems and inspection stations. The paper presents the way in which the assembly project management of a suspended conveyor system was carried out. Critical path method was used. It has identified the assembly operations, the way they succeed in the technological process of assembly, the duration of the operations and the resources (labor force) necessary for their realization. This information has been processed through Microsoft Project resulting in critical activities (critical path), project duration, the ratio between the available and necessary resources (in the analyzed case a significant deficit of the machinist resource) and the corresponding costs. In order to solve the problem of resource requirements, two solutions were used: leveling resources and supplementing them in order to reduce the duration of critical activities. Finally, a version of the conveyor assembly project management resulted in a balance between costs and duration.
Kinematics analysis of the swash plate mechanism
Authors: Alaci S , Pentiuc R D , Ciornei F-C , Buium F , Rusu O T 
Published: September 2019

Abstract
The swash plate mechanism is one of the most exploited mechanisms from technical applications due to its constrictive simplicity. The kinematical analysis supposes establishing the motion of the plunger as function of the motion of the plate and of the constructive characteristics of the mechanism. The work presents the kinematical analysis of the mechanism performed by two methods. In the first way, the mechanism is replaced by a mechanism with lower pairs to which the Hartenberg-Denavit procedure is applied. In the second way, the definition conditions of the pair of first class, plunger-plate, are used. The results are obviously identical for the two methods but for the second approach, the labour required for the analysis is significantly reduced. The main outcome of the paper refers to the scheme of kinematical solving of a mechanism. The type of pairs should be a criterion and for the higher pairs, the use of direct condition of the structural definition is recommended.
Sustainable mobility as a result of peoples’ awareness on environmental problems generated by transport activity
Authors: Mitran G , Ilie S , Igret S V , Mihailescu S 
Published: September 2019

Abstract
The field of mobility and transport has undergone major changes in recent decades, being a close link between it and the general economic development. Taking into consideration that urban areas concentrate the most of inhabitants and socio-economic activities, the negative effects generated by the increased road traffic are present mainly in the cities, especially in their central areas. People’s involvement in awareness-raising actions on environmental issues caused by transport activity is a starting point for achieving a sustainable urban mobility system. Information and awareness of people about the link between travel behavior that they adopt and negative effects on the environment is a first step towards educating them in order to shift to sustainable mobility patterns. The paper highlights the awareness and participation component of people in the development and implementation of sustainable urban mobility plans, as an educational action for environmental protection and sustainable mobility. This concept of involving citizens is detailed within a case study.
A brief assessment of outliers and malfunctions detecting techniques with an application on lubricant condition monitoring
Authors: Grebenişan G , Bogdan S , Salem N , Negrău D C 
Published: September 2019

Abstract
Condition monitoring and machine status classification are of great practical importance in the manufacturing industry as it provides online updates on the state of the machine, avoiding loss of production and minimizing the probability of generating catastrophic damage to the machine. In this paper, the classification of conditions is based on the processing of information using wavelets based on the results of the monitoring and the data collected during such an action, measuring the characteristics of the lubricating oil over some time sufficient to produce a time series of results. In this paper, the classification system is tested and validated using observation sequences based on the maximum wavelet distribution obtained from the collected signals, monitoring the state of the lubricating oil, to define and diagnose singularities in time series.
Introduction to the research of uncertainty in logistics management
Authors: Marzantowicz Ł , Dembińska I 
Published: September 2019

Abstract
The article aims to present the assumptions and results of the first part of the initial research of logistic management in conditions of uncertainty. As a result of the research, research gaps were identified which determine further directions of research in the problem above. The presented research results were analyzed using the statistical method of Spearman and Guilford, which allowed verifying the assumptions and determining the working version of the hypothesis and the partial purpose of further research. The evaluation of the survey results confirmed the need for conducting in-depth research in recognition of uncertainty conditions at the strategic management level.
Numerical study on the effects of using different concentrations of FAME blends on the spray structure of the injection process
Authors: Motogna M S , Moldovanu D , Mariasiu F 
Published: September 2019

Abstract
The present paper takes a closer look at the injection process characteristics for different conditions when there are used different FAME blends. Using a numerical approach, this work highlights the main implications and differences in terms of geometry, structure, and physical parameters of the injected fuel spray, when alternating the used fuels. In this attempt, AVL FIRE was used as simulation software solution giving the chance to alternate the used fuels and furthermore to create a direct link between the fuel properties, internal flowing, and jet spray characteristics. Because of the environmental and economic reasons, there are a growing tendency of using biofuel blends in increasing concentrations, as ample consumption of commercial fuels. As the physical properties of the Fatty Acid Methyl Ester fuels are very different compared with conventional diesel fuel, we expect that the fuel blends between them will show different behaviors in terms of internal nozzle flowing and thus it will generate different injection characteristics, being closely related with the biofuel concentration. The main objective of this paper is to set a dependency between the used fuels, nozzle geometry, and injection parameters that should be adapted, to meet the emissions standards and to obtain a properly burning.
Restoration and PLC control of a material handling MP-9S industrial manipulator platform
Authors: Horváth P P , Erdei T I , Husi G 
Published: September 2019

Abstract
In this project, a material handling MP-9S industrial manipulator was restored and put into operation. In its starting state, the only the manipulator itself was available, without a functioning controller. As a part of the restoration, the manipulator’s mechanical structure was examined, the existing electrical connections and sensors were checked, its missing controller was replaced, and was later programmed to execute an example task. The control system was designed to flexible and able to accommodate a wide variety of controllers. In its currently realized state, the program can be observed and interacted with by the implementation of a Human-Machine Interface. These tasks and the necessary tests were completed at the robotics lab of University of Debrecen, Faculty of Engineering.
The assessment of the financial performance based upon ratios. A comparative analysis
Authors: Tudose M B , Avasilcai S 
Published: September 2019

Abstract
This study presents a comparative analysis model of the financial performance for two large companies operating in the field of production and trading of car parts. The model has as a starting point the assessment of the dynamics of liquidity, sales and profitability ratios (for a period of ten years). Based upon the preliminary results, the compound annual growth ratios were calculated and the trends (for the following seven years) were determined. All of these have made it possible to identify the performance profiles for the two companies. The study reveals that the financial performance was made more vulnerable by the insufficient cash availability (the cash reserves are not adequate for the current debt, assets and sales volume) and by the low levels of the recorded profit ratios (measured by the net profit margin, ROE and the return on shares). Although the cash and profit analysis reveals a cascade increase, the sales performance and return on equity ratios remain burdened by too high operating costs. To improve liquidity and profitability have been identified measures to meet the objective of ensuring the business sustainability.
Experimental research regarding the influence of AdBlue solution temperature on internal combustion engines pollutants
Authors: Capătă D M S , Popa M F , Burnete N , Ungureşan M L 
Published: September 2019

Abstract
The constraints related to the environment, the vehicle’s pollution, as well as the increase in the number of the registered vehicles have to lead to the development and implementation of complex systems for the treatment of exhaust gases. The pursued purpose of the given regulations and environment norms has been the decrease of the main pollutants measured at the vehicle’s exhaust pipe, that is: the nitrogen oxides, particles, carbon monoxide. This paper presents the experimental research and the results obtained on the influence of the solution AdBlue on the pollution performances – studies that have been achieved at Volvo Romania SRL. Thus, taking into consideration the evolution of the temperature of the reductant from -40°C to +40 °C, there are underlined the performances insured by SCR and the dependency of the pollutants on these temperatures, fulfilling the usual usage measures. The variations recorded for nitrogen oxides (after the catalyzer for catalytic reduction), the reductant consumption and the efficiency of SCRtransformation at different values of the AdBlue solution are being presented using graphic representations.