bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of colorimetric reading out methods for radiochromic film and red radiation-sensitive poly-methylmethacrylate
Authors: Varapaskul T , Katemake P , Preda R I 
Published: September 2019

Abstract
This research is aimed to introduce and to compare 3 methods of reading out and analyzing light blue radiochromic film (BLF) dosimeter and red radiation-sensitive poly-methylmethacrylate (PMMA). The BLF and red radiation-sensitive PMMA act as a colour detector which its colour changes after being irradiated. These dosimeters are usually used in food irradiation for process control during irradiation process. The camera-based measurement in a constraint condition, scanner-based measurement with the Trichromatic Colour Analyser (TCA) software and spectrophotometer were used for obtaining colorimetric data of both dosimeters which were non-irradiated and irradiated in 5 doses: 5, 10, 15, 20 and 25 kGy. There were strong linear relationships between doses, given to BLF, and lightness (CIE L*), chroma (CIE C*) and yellowness-blueness (CIE b*) for 3 methods. For red radiation-sensitive PMMA, strong linear relationships were found between doses and redness-greenness (CIE a*) as well as CIE C* in both TCA and spectrophotometer methods. The doses and CIE L* gave strong relationship only in the spectrophotometric method.
The shielding design of the radio frequency cavity in the storage ring of the Thailand synchrotron radiation light source
Authors: Juntong N , Ruangpoonwitthaya S , Srichun S , Sittisard K , Suradet N 
Published: September 2019

Abstract
The radio frequency (RF) cavity provides an electric field in direction of electron beam in the synchrotron radiation machine to accelerate electron beam or compensate electron beam energy loss. Thailand synchrotron radiation machine has installed a second RF systems in the straight ring since August 2016. The RF cavity of the system can provide a maximum accelerating voltage of 300 kV at its accelerating gap. During the commissioning of the cavity in August 2016, there was a high radiation detected outside the shielding wall of the storage ring. The local shielding was installed for the safe operation of RF cavity at 185 kV. There will be a new insertion device installed in storage ring during a machine shutdown period in August 2018. This insertion device requires an operation of the RF cavity higher than 185 kV, which increases the radiation. The new design of RF cavity local shielding will also be installed. The radiation from RF cavity was investigated and the local shielding was designed using Mote Carlo simulations. This paper presents a detailed investigation and design of a local shielding together with a radiation survey results after the installation of shielding.
Fuel burnup analysis and fuel management for TRIGA Mark III research reactor
Authors: Tiyapun K , Tippayakul C , Wetchagarun S 
Published: September 2019

Abstract
The fundamental advantage in using Monte Carlo methods for burnup calculations is to formulate an effective optimal fuel management strategy for the TRR-1/M1 research reactor. The core management study has been performed by utilizing the essentially parameters including multiplication factor, power peaking, neutron flux and burnup calculation based on the Monte Carlo calculation. The fuel element burnup was calculated after reshuffling the reactor core. The fuel cycle length and core parameters such as core excess reactivity, neutron flux, axial and radial power factors and other parameters are determined. The core excess reactivity was calculated as a function of burnup. The maximum excess reactivity shall not exceed 6.3% Δk/k. The maximum fuel temperature shall not exceed 930 °C during steady-state operation. Typically, a core loading operated with the maximum burnup between 100 to 200 MWD depending on the utilization requirements. The thermal neutron flux in the irradiation positions is within the order of 1011 - 1013 n/cm2-sec. The study gives valuable results into the behaviour of the TRR-1/M1 research reactor and will ensure optimized utilization and operation of the reactor during its life time. It will establish the strategic planning for fuel management in the reshuffling and reloading schemes patterns and its safe implementation in the future.
Effects of Zn(II) on hydrogen peroxide-induced corrosion of stainless steel
Authors: Makjan S , Boonsri P , Channuie J , Kanjana K 
Published: September 2019

Abstract
Zinc injection has been widely applied in nuclear industry for corrosion mitigation of nuclear materials. The corrosion resistance mechanism of zinc in the presence of the radiolytic oxidizing species is complex and has not been completely understood. Without such information it is not possible to improve the protocol. In the present study, zinc effects on corrosion of 304 SS exposed to H2O2 at 200-1000 ppb for 7 and 70 hrs were investigated at room temperature using a custom-made flow setup. XRF and SEM-EDX were used to examine the chemical composition and surface morphology of the specimens. The results indicated that pitting was the dominant form of corrosion found under the experimental conditions. Zinc ions tend to help mitigate corrosion of the material via playing a significant role in oxide formation on the steel surface.
Evaluation of influence of mining cracks on reservoir leakage
Authors: Yutao Wang 
Published: September 2019

Abstract
Combined with the engineering geological conditions and the goaf occurrence of Hongyanhe Reservoir in Binzhou City, the distribution characteristics of the fissure zone in the edge of goaf were explored by field test. The influence of mining fissure on reservoir seepage were evaluated on the basis of analyzing the influence of mining fissure on rock mass integrity and seepage. The evaluation results show that the maximum leakage caused by goaf is 1004.41m3/d, which accounts for 0.87% of the designed annual runoff. As time goes on, the goaf will gradually become stable, and the leakage will decrease little by little over time. In view of the impact on coal mine production safety, it is suggested to strengthen monitoring and early warning.
Three-dimensional Visualization of Expansive Soil Channel Slope Monitoring in the Middle Route of South-to-North Water Diversion Project
Authors: MinZheng  , RuiMa  , ZuqiangLiu  
Published: September 2019

Abstract
The deformation of expansive soil canal slope in the middle route of South-to-North Water Transfer Project is obvious under the action of dry-wet cycles such as atmospheric rainfall and evaporation. By means of three-dimensional visualization, the deformation trend and characteristics of canal slope in three-dimensional on-line can provide more intuitive and clear basis for the stability evaluation and rapid disposal of canal slope. Based on the self-developed three-dimensional geographic information platform -3D GIS-Ark, this paper studies the three-dimensional visualization expression method of channel and safety monitoring information in the middle route of South-to-North Water Transfer Project, and realizes the three-dimensional model of Nanyang Expansive Soil Canal section, the visualization expression and early warning of monitoring equipment management and section monitoring information. The three-dimensional visualization results studied in this paper can provide visual decision support for engineering safety analysis, intelligent evaluation and early warning, and have significant application value in the field of engineering safety monitoring.
Optimization of Land-Saving Underground Pump Station Combining Computational Fluid Dynamics and Physical Model Experiment
Authors: Zhang Shuo , Wang Ruhua 
Published: September 2019

Abstract
Combining 3D CFD numerical simulation and physical model experiment is applied in underground pump station for saving land and energy. The pump station’s overall structure is targeted at a large analysis area. Hydraulic rectifications such as diversion plate and distribution hole are confirmed for better hydraulic conditions and distributing uniformity evidently. Based on comparing project schemes and optimal design, land is approximately saved half and head loss is reduced about fifty eight percent.
Construction technology of spherical keyway formwork with c antilever for high arch dam
Authors: Mei-rong Zhou , Xue-mei Zhang 
Published: September 2019

Abstract
High arch dam is a special and complex structure, which requires high quality of concrete pouring surface. This paper puts forward the structure system of the special cantilever spherical keyway formwork for high arch dam, through the reasonable setting and construction control of keyway panel system, support system, connecting parts and anchorage parts, the research results show that the construction quality of the special cantilever spherical keyway formwork system for high arch dam can be effectively controlled.
Study on division of groundwater function zones in Pingtan Island
Authors: Huo Yun , Li Yuxi , Li Wanglin , Zhang Chunhui , PanlinLi  
Published: September 2019

Abstract
Based on the topography, geomorphology, groundwater exploitation and other hydrogeological data of Pintan Island, the study area was divided into three levels and basic evaluation units were divided. According to the zoning principle of Technical Outline of Groundwater Function Zoning in China, and through the spatial analysis function of ArcGIS, the zoning index data was spatialized and the overlay analysis was carried out. The study area was divided into three types of first-level function zones and eight types of second-level function zones. Moreover, the groundwater function zones map of the study area was drawn. Relevant results can provide reference and basis for relevant departments to develop, utilize and protect groundwater.
Factors Affecting Bio-cemented Typical Silt from Middle and Lower Reaches of Yellow River
Authors: Zhao Yang , Ge Fei , Yang Yongxiang 
Published: September 2019

Abstract
Microbial-induced calcite precipitation (MICP) technique takes advantage of the metabolic process of bacteria bonding soil particles together with an environmentally-friendly and sustainable manner. In this study, the silt from reaches of Yellow River was used for bio-grouting. The effects of temperature, pH, inoculum size and revolving speed on urease activity were studied by single factor method for Sporosarcina pasteurii. Moreover, the effects of different nutrient concentrations on the stabilization for the typical silt were evaluated. Highest urease activity could be obtained under temperature of 32 °C, inoculum size of 5%, pH of 8 and speed of 180 r/min. Besides, higher concentration of calcium salt could generate more calcium carbonate effectively, and calcium carbonate content can reach to 261mg/g with uniaxial compressive strength of 1.7 MPa.
Application of GNSS displacement monitoring system in measurement of open sea structure
Authors: Cao Yongyong , Guan Yunfei , Li Chengchao , Hou Heyin 
Published: September 2019

Abstract
With the development of deep water port and marine engineering, more and more marine structures are located in open sea area. The measurement development of open sea area structure is restricted by abominable marine environment, no control point and difficult data transmission. Combined with the deep water offshore bucket-based breakwater, the displacement measurement technology of open sea structure is studied. The global navigation satellite system (GNSS) is built to realize real-time monitoring of bucket structure displacement. Different monitoring schemes are formulated based on the characteristics and precision of the structure in the sea conveyance floating stage, installation stage or operation stage. It is found that displacement in the structure along the axis of the breakwater is less than that perpendicular to the axis by monitoring data, and the displacement laws of horizontal displacement and settlement in each stage of the structure are obtained. It has very important guiding significance for the structure construction and post-construction stability control in open sea area.
Some Thoughts on the Establishment of Water-saving Society at County Level in Haining City
Authors: Chen Caiming , Sun Yi 
Published: September 2019

Abstract
Since Haining was listed in the first batch of counties in Zhejiang Province to build water-saving society up to the national standards, water-saving work has been carried out in all directions and from many angles, and remarkable results have been achieved. During the construction of water-saving society at County level, a series of measures such as strengthening organization and leadership, improving water resources management system, increasing investment and expanding propaganda have achieved remarkable results in water resources protection and conservation, and successfully passed the acceptance of the first batch of national water-saving society at county level organized by Zhejiang Water Resources Department. Through summing up experience, it can provide reference for the construction of water-saving society in similar areas.
Research on Digital Control and Feedback System for High Slope Excavation of Hydropower Station
Authors: Hu Chao , Chen Yuanyuan , Xu Sheng , Chen Tingcai 
Published: September 2019

Abstract
In view of the quality analysis and evaluation of high slope excavation in hydropower project, this study uses 3D laser scanning to quickly obtain the image of the excavation surface. According to the characteristics of point cloud data and slope quality evaluation indicators, the quality of excavation from multi-dimensional, the evaluation and establishment of the excavation quality feedback control system based on the construction period is established. Finally, the digital construction and control system for high slope excavation of hydropower station is developed. The engineering application proves that the method and system established in this paper can effectively improve the slope. The efficiency and precision of excavation quality control provide effective support for the scientific and refined management of slope excavation.
Study on the control effect of two different forms of side suction hoods on pollutants
Authors: Xiong Han , Peng Xiaoyong , Li Yu , Chen LiYuan 
Published: September 2019

Abstract
A suitable exhaust hood form has a great influence on the control effect of pollutants. This paper uses CFD technology to numerically simulate the airflow distribution characteristics and pollutant concentration distribution characteristics of the side hood before and after improvement. The results show that: (1) The airflow of the improved side suction hood is introduced from the front of hood to make the fresh air pass through the breathing area first and then takes away the hazardous substances, which is beneficial to the breathing health of workers. (2) When the exhaust velocity (V) is more than 3.5m/s, with the increase of the exhaust velocity, the concentration hazardous substances at each control point of the two forms of exhaust hood tends to be stable gradually. (3) When the exhaust velocity is less than 3.5m/s, the control effect of side suction hood with baffle is better than that without baffle, and the percentage of hazardous substances concentration at the same control point can be reduced by 12%-29%, or even higher.
Analysis of Deformation Characteristics of Expansive Soil Embankment under Extreme Atmospheric Action
Authors: Xiongwei Li , Baochun Zhou , Liang He , Jianqun Zhu 
Published: September 2019

Abstract
By setting extreme boundary conditions, the working behaviour of expansive soil embankment under atmospheric action is analyzed. The embankment is subjected to continuous rainstorm for 6 days after 3 months evaporation under hot weather. On the basis of fracture description, the deformation process considering infiltration is calculated. The deformation of embankment treated with lime-soil and without lime-soil is compared, and the influence of different water levels is taken into account. The results show that expansive soil embankment will produce large deformation in evaporation and rainfall environment. When expansive soil embankment is treated with lime-soil enclosure, the deformation becomes small. This treating method can effectively reduce the influence of extreme environment, and ensure the deformation of embankment stably.
Analysis of Excavation Method and Transformation of Construction Method for Highway Tunnel
Authors: Nie Yuwen , Guo Hongyan , Cui Xiangyang , Li Ke Li , Ding Hao 
Published: September 2019

Abstract
The geological conditions of tunnel entrance section are complex, and the hazards of landslide and collapse are easy to occur, which makes the selection of construction methods of tunnel entrance section particularly important before tunnel construction. Therefore, it is of great significance to study the transformation of construction methods between tunnel body section and tunnel entrance section for the safety construction of tunnel entrance section. Taking a tunnel of Meida Expressway as an example, the geological characteristics of the tunnel body and the tunnel entrance section of Meida Expressway are analyzed. Based on the comprehensive consideration of the construction period, safety and advantages and disadvantages of the construction method, the CD method is adopted to construct the tunnel outlet section. Through numerical simulation of tunnel body and outlet section, it is concluded that CD method is superior to bench method in tunnel body section, and can ensure construction safety; and the steps of conversion from bench method to CD method are summarized. Finally, through monitoring and measuring the surrounding rock and surface deformation near transition section, it is concluded that the maximum cumulative deformation at vault top is 78.6 mm, and the maximum cumulative deformation at surface is 94.6 mm, which meets the requirements of specifications and ensures the safety of the tunnel entrance. Therefore, reasonable transformation of tunnel construction method can ensure construction safety, at the same time, it can also speed up construction progress and save funds.
Analysis of strong ground motion characteristics recorded on reclaimed soil site
Authors: Pei-Xuan Liu , Xiao-Jun Li 
Published: September 2019

AbstractThis paper discusses the difference between the strong ground motion of reclaimed soil sites and those of free-field ground motion. We determine under what conditions the influence of reclaimed soil can be ignored, and the ground motion on the reclaimed soil site can be regarded as a free field. Finite element models of reclaimed soil were constructed by analyzing the actual situation of strong ground motion observation on reclaim soil sites. Using a “lumped mass explicit dynamic finite element” method, the effects of shear wave velocity and thickness of reclaimed soil on free-field ground motion are analyzed. Replacing thicker reclaimed soil with remolded soil is proposed to reduce the impact of reclaimed soil sites on the ground motion of free field sites, the effects of which are analyzed by numerical simulation. Results show that the ground motion peak and the response spectra of the reclaimed soil site are significantly different from those of the free field site. With increasing reclaimed soil thickness, the influence is more noticeable. The impact of reclaimed soil on the free-field site can be reduced with reclaimed soil being replaced by remolding soil. The conclusions provide a theoretical basis for the rational use of strong ground motion records on the reclaimed soil site and the construction of strong motion stations.
Improved Quantile Regression Analysis on Small Sample Multicollinear Time Series Measured Data
Authors: Fang Weihua , Chen Yunping , Cheng Dehu , Zhang Hui , Li Lin 
Published: September 2019

Abstract
To solve the problems of little sample, multi-collinearity and bad robust ability of normal model remaining in measured dam data in process of analysis, this paper analyzed the monitoring data of measured dam crest crown cantilever and both sides of 1/4 arch of a gravity dam in 2013 using circannual monitoring data. The research shows that quantile regression analysis method based on POD can conquer the problems above when analyzing measured dam data and excavate more safety dam information.
Mechanical Properties and Microcosmic Analysis of Undisturbed Loess in Xining Area with Different Moisture Content
Authors: Cui Jingyu , Liu Yu , Xie Banglong , Zhang Wuyu 
Published: September 2019

Abstract
Aimed at researching intact loess mechanical properties in Qinghai area, this paper analyses these parameters through consolidated and undrained triaxial tests and SEM tests, and tests results are fitted linearly. The results show the maximum deviatoric stress increases with the increase of confining pressure when loess moisture contents are same. SEM images of loess clearly illustrate the close relative between moisture content and the pore distribution. The relationship between water content and shear strength index c and φ and ratio of pore area is nearly linear. Through using moisture content parameters, loess strength and pore ratio can be deduced by fitting linearly formulation, which has certain reference significance to the local engineering construction.
Study on flow measurement method of vertical axial flow pump based on the relationship between flow and differential pressure of two points in elbow inlet passage
Authors: Zhu Xiaoming , Yu Yonghai , Zhang Wei 
Published: September 2019

Abstract
Under the support of computational fluid dynamics (CFD), a new flow measurement method for vertical axial flow pump with elbow inlet passage was put forward. In order to select suitable turbulence model to predict wall pressure in elbow inlet passage, Standard k-ε, RNG k-ε and Realizable k-ε models were used to simulate the flow field. In comparison with experimental results, the conclusion could be drawn that it is feasible to predict the wall pressure of elbow inlet passage with Realizable k-ε turbulence model. For model pump, based on the data from the model test and the numerical simulation respectively, the equations about discharge of pump and two-point differential pressure were obtained with the least square method and the results indicated that coefficients of the equations were slightly different. Based on the same numerical simulation method as model pump, the differential pressures were obtained by cloud computing with large parallel for prototype pump. In order to improve the prediction accuracy of discharge of prototype pump, a new corrected method was proposed on the condition that the relative errors about two-point differential pressures between numerical simulation and experiment for model pump were the same as those for prototype pump according to Euler similarity criterion. It is concluded that the method improves the accuracy and simplicity of flow measurement for vertical axial flow pump with elbow inlet passage and the approach to predict the flow of pump is feasible.
Quality Inspection and Evaluation of Lining of Flood Discharge Tunnel in Nam Lik 1-2 Power Station
Authors: Li Meng , Wang Heran , Feng Minghui , Li Xiulin 
Published: September 2019

Abstract
In 2015, Laos Nam Lik 1-2 power station once dealt with the defect of the flood discharge tunnel. After the flood discharge hole was emptied in 2018, it was found that the concrete was peeled off and exposed. After on-site census, radar detection, rebound and core strength testing, it is judged that the tunnel has apparent defects but does not affect the flood season operation. In order to prevent the surface concrete from being washed by the water flow and continue to expand the shedding surface, it can be repaired and strengthened after the flood season, which provides a favorable scientific basis for the operator.