bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on Reliability of Friction Pile Foundation with Grouting at Pile Bottom
Authors: Baohua Zhang , Kang Zhang Zhen , Peng Zheng 
Published: June 2022

Abstract
The reliability calculation model of grouting pile foundation under eccentric load was studied. JC method was used to calculate its single reliability. Considering the correlation of failure modes, the narrow limit of the reliability of grouting pile foundation was obtained.
The Effect of Shear Rate on the Shear Strength of Saturated Coal-Measure Soil
Authors: Chen Kun , Zhang Hong , Wu Can , Liao Liangjian , Zhu Rui 
Published: June 2022

Abstract
Coal-measure soil is easy to soften with water and has very poor stability. When encountering heavy rainfall, it loses strength and saturation failure occurs in a short period of time, which can easily cause instability and damage of coal-measure soil slopes, which is a great threat The traffic safety of the road. The shear strength of saturated coal-measure soil is affected by many factors. Since coal-measure soil is difficult to form samples after encountering water, the SLB-1A saturated soil triaxial tester is used to apply back pressure according to the principle of combining head saturation and back pressure saturation. Saturate. The UU test of 0.2mm/min, 0.4mm/min, 0.8mm/min, 1mm/min was applied to the sample with the confining pressure of 100kpa, 200kpa, 400kpa and 500kpa to study the resistance of the confining pressure and loading rate to the saturated coal measure soil. The effect of shear strength. Under the same shear rate, the shear strength increases with the increase of confining pressure. Under the same confining pressure and different shear rates, the shear strength changes very little and does not show regularity, because the coal-measure soil has poor structure.
A Multiple Survey Network for Super High-Rise Building
Authors: Xinjie Deng , Mingming Kou , Yin Yong 
Published: June 2022

Abstract
Super high-rise building is one kind of common modern construction mode. The increasing height makes the establishment more complex than the ordinary building’s construction and brings more risks to project management. The work of the survey includes a control survey network and construction survey, in which the majority job is setting out the accurate location and monitor the structures, supplies guarantee to project management to meet the requirements of quality, time, and budget. In this paper, a true super high-rise building case is introduced to show how a multiple survey network designed to guardian the safety and quality of the project.
Difference Analysis of Operation Stability of Vacuum Circuit Breaker in 10KV Power Distribution System
Authors: Su Jiawei , Chen Ken , Wang Qi 
Published: June 2022

Abstract
As an important part of power transmission and transformation equipment, vacuum circuit breakers have become the core device for protecting and controlling electrical lines in high-voltage electrical equipment. This paper expounds the different types of test methods for the preventive test of high and low voltage distribution rooms. Taking the 10kV high and low voltage distribution system in use as the analysis object, 37 units are randomly selected as samples, and statistical principles are used to analyze differences, extract point estimation and interval Estimating eigenvalues, judging the stability and balance of the overall operation of the vacuum circuit breaker in the power distribution system, and providing a basis for the safe use and preventive testing of the power distribution system.
Engineering application of an improved AAO process
Authors: Zhang M H , Huang Y 
Published: June 2022

Abstract
An improved AAO process was designed in this study, in which the pre-anaerobic section was prepositioned and water inlet by two-points method was utilized. A regulating section was added between the anaerobic and aerobic sections, and could be switched to anaerobic or aerobic sections as needed to enhance the performance of nitrogen and phosphorus removal. On this basis, the process was applied to the Xihai Sewage Treatment Plant Project (Phase III), aiming to the treatment of domestic sewage with a scale of 8×104 m3/d. Characteristics, mechanisms and design parameters of the process were introduced and the operation results were analyzed in this study. It could be found that the removal efficiencies of COD, NH3-N, TP and SS were 89.36%, 96.89%, 95.99% and 96.78%, respectively. All the effluent indicators meet the first-level A standard in the “Pollutant Discharge Standard for Urban Wastewater Treatment Plant” (18918-2002).
The influence of different ratio of Sn4+ and Bi3+ on n-p SnO2/α∼ Bi2O3 composite structure and its photocatalytic properties by solid phase synthesis
Authors: Qiu Taoyu , Ayitiguli  , Liu Liling 
Published: June 2022

Abstract
In this study, a novel n-p SnO2/α∼Bi2O3 composites were synthesized by the convenient and rapid in-situ solid-phase reaction synthesis. The different influence of ratios: n (Sn: Bi) = 2/1, 3/1, 1/1, 1/2 and 1/3 on the crystal shape, microstructure, specific surface area, optical absorption properties of the material and the separation ability of photocarriers were discussed. The study shows that: compared with pure SnO2, the light absorption boundary of all the composites have been widened to the visible light region, the larger the ratio of Sn in the sample, the more conducive it is to absorbing the visible light. However, greater ratio of Sn4+ ions in the sample will lead to a decrease in the separation ability of photo electrons and holes. Of which n(Sn: Bi) = 2/1 composite, photoelectrons and holes have the strongest separation ability. The Rhodamine B (Rh. B) solution can be almost completely decolorized within about 30 minutes under 400W halide light irradiation. The chemical reaction mechanism in the sample synthesis process was discussed in detail. This study not only synthesized excellent n-p SnO2/α∼Bi2O3 photocatalytic composites, but also provides references for in-situ synthesis of other semiconductors.
Design and Workspace Analysis of Drilling Arm of Mining Anchor Drilling Robot
Authors: Jun Zhang , Jiguo Wang , Qianyi Zhang , Ning Wang , Chaofan Wang , Lei Wang 
Published: June 2022

Abstract
Bolt support is the main way of underground roadway support in coal mines in China. At present, there are some problems in domestic coal mines, such as low efficiency and poor safety. In view of the above problems, a structural scheme of omni-directional multi angle automatic roof bolter is designed. Firstly, based on the D-H method, the kinematics model of the drill arm structure of the anchor drilling robot to the roof and side of the working environment is established, and the space analysis of the four drill arms is carried out; At the same time, due to the design of the drill arm of the anchor drilling robot, the left and right drill arms of the equipment extend, rotate and work at the same time. Combined with the MATLAB kinematics model, the experiment is carried out to simulate the spatial position of the end of the drill arm of the anchor drilling robot. At the same time, the research results show that the robot can quickly replace the anchor drilling arm and ensure the quality of all-round anchor drilling, and the robot can meet the requirements of all-round support.
Implementation Of Active RFIDs In Inventory Systems
Authors: Soltanirad Arshia , Ahmad Hafisoh , Yap Hoon , Ismail Hafizul A. 
Published: June 2022

Abstract
The commoditization of integrated circuits has revolutionized the world of IoT based networks. Supply chain management relies heavily on the application of passive RFID tags for inventory management. However, this technology is outdated and does not provide real-time monitoring for warehouse administration. Moreover, due to the high error rate of traditional passive RFIDs, active RFIDs are graded higher in terms of operational efficiency. The biggest challenge in the deployment of active RFIDs in inventory systems is high power consumption. The passive RFIDs were favored due to their lack of dependency on an internal power supply. The inception of low power long range radio modules has fully transformed the range of applications for active RFIDs. The long range low power active RFIDs are used to develop IoT ecosystems for the purpose of creating a smart supply chain management system. In this research, the hierarchical wireless mesh network consists of three levels; the end node, the concentrator and the gateway. The model takes advantage of low power long range radios to design a system that can monitor and track inventory in a warehouse. The unique circuit has small and compact properties that has the potential to be deployed in real life warehouses.
Investigating effect of compatibilizer on polymer blend filament from post-used styrofoam and polyethylene for fused deposition modelling
Authors: Chow H M , Koay S C , Choo H L , Chan M Y , Ong T K 
Published: June 2022

Abstract
This research produced the filament by blending the recycled polystyrene (rPS) from post-used Styrofoam and low-density polyethylene (LDPE). This study used polystyrene-grafted-maleic anhydride (PS-g-MA) as a compatibilizer to the rPS/LDPE blend. The formulated filaments were printed into specimens using a FDM printer. The visual inspection results showed that the printed specimens displayed better adhesion as the printing temperature and extrusion rate percentage increased. The addition of PS-g-MA also enhanced the adhesion of the printed layers. In terms of tensile properties, adoption of PS-g-MA also significantly improved the tensile strength and tensile modulus of the printed specimens. Furthermore, the addition of PS-g-MA increased the degree of crystallinity but it has shown no significant effect on the melting temperature. In addition, compatibilized rPS/LDPE blend samples possessed higher onset thermal degradation temperatures than the uncompatibilized rPS/LDPE blend sample, where higher onset thermal degradation temperature indicated that the material has better thermal stability. Overall, PS-g-MA was an effective compatibilizer to the immiscible rPS/LDPE blend filament where improvements of overall material properties and print quality can be observed, and especially with 5 wt% of PS-g-MA compatibilizer content, the tensile, thermal properties and print quality were improved the most.
Effect of design and material on structural rigidity of automobile wheel - an optimisation approach
Authors: Karim H , Ku P X 
Published: June 2022

Abstract
An automobile wheel plays a vital role in supporting the tyre and the entire weight of any vehicle. This study aims to examine the distribution of stress and deformation across 5-twin-spoke and multi-spoke wheel designs whilst varying lightweight materials, as well as optimise the base designs of the wheel such that they reach an optimum level. The wheel was modelled using SolidWorks, before being analyse by Finite Element Analysis software whereby aluminium and magnesium alloys were assigned. The structural rigidity of the wheel models was assessed by conducting static structural analysis and radial fatigue analysis. Changes in terms of total deformation, von-Mises and alternative stress were obtained, and tabulated. Optimisation of the wheel models was conducted by making necessary modifications to the base designs. The result shows that multi-spoke fared better than 5-twin-spoke in both analyses, and the notable weak point observed is the hub region. In term of material-wise, it was found that Magnesium AZ91D alloy generally has higher deformation, von-Mises and alternating stress than Aluminium 6061 Alloy. Future works could be focused more on conducting additional tests so that the wheel models are well-geared for road usage, such as impact and cornering fatigue tests.
Additively Manufactured Patient Specific Cranioplasty Implants with Antibacterial Properties
Authors: Nazeer Mohamed Nazran , Choo Hui Leng , Wong Yin How , Hon Hui Juen 
Published: June 2022

Abstract
Cranioplasty is the surgical procedure to repair the bone defects in the cranium. Poly(methylmethacrylate) (PMMA) is the most common used biomaterial as it showed better long-term outcomes. Cranioplasty is usually performed through in-situ forming approach. However, the heat and shrinkage and the release of unreacted monomers represent the main drawbacks. Studies also shown a rate of graft infection higher than 10% in surgical PMMA cranioplasty. To overcome these, prefabricating the implants using additive manufacturing (AM) has been proposed. The AM implants could be tailored according to the defect and reduce surgical time, blood loss and the risk of infection. However, the insufficient disinfection of the AM implants may increase the risk of infection. Therefore, the implants can be loaded with antimicrobial agents prior to the cranioplasty. This study synthesised a chemically modified PMMA that can be loaded with antimicrobial agent for AM. The PMMA was sulfonated under different sulfonation temperature, duration, and ratio of PMMA to sulfuric acid. The ionic exchange capacity and degree of sulfonation of the sulfonated PMMA (SPMMA) was determined. In the future, SPMMA with the optimal IEC and DS will be loaded with antimicrobial agent and will be evaluated using the zone of inhibition assay.
Treatment of Greywater by Using Artocarpus Heterophyllus Seeds as A Natural Coagulant
Authors: Cheng CWJ , Ismail N , Oh KS 
Published: June 2022

Abstract
In this study, Artocarpus Heterophyllus seeds is used to treat the greywater. The objectives are to characterize the functional group, zeta potential and the protein content of Artocarpus Heterophyllus seeds and to examine the performance of the seeds in treating greywater by changing the pH, coagulant dose, and mixing effect, as well as comparing them to Aluminium Sulphate (Alum). The functional groups presence in Artocarpus Heterophyllus seeds are hydroxyl group (O-H), amine group (N-H) and carboxylic group (C-O). The zeta potential of Artocarpus Heterophyllus seeds is averaged at -4.14 mV and protein concentration is at 0.294 mg/L. It was found out that Artocarpus Heterophyllus seeds work best at pH 3, 800 mg/L of coagulant dosage and 20 rpm for slow mix and 70 rpm for rapid mixing which resulted in 95.11%, 80.4% and 92.73% removal efficiencies of turbidity, COD and TSS respectively. At pH 6, 200 mg/L of alum coagulant, 40 rpm for slow mix and 150 rpm for quick mix, turbidity, COD, and TSS removal efficiencies were 90.15%, 55.35%, and 96.92%, respectively. Therefore, it shows that Artocarpus Heterophyllus seeds is a better coagulant to treat greywater compared to alum. It has the potential to replace the conventional chemical coagulant.
Experimental Investigation of Blood Mimicking Fluid Viscosity for Application in 3D-Printed Medical Simulator
Authors: Perrira Nadelyn , Shuib Anis Suhaila , Phang Siew Wei , Muda Ahmad Sobri 
Published: June 2022

Abstract
Blood mimicking fluid (BMF) is blood that accurately mimics human blood. BMF is commonly used in 3D printed medical simulators for pre-surgical planning and simulation or intraoperative orientation to assist surgeons on cardiac surgical procedures. This research aims to develop a newly formulated BMF containing polysaccharide particles via varying the percent composition of xanthan gum-starch-water-glycerol-contrast agent mixture. The viscosity of the formulated BMF is compared with human blood and observed. A total of 10 BMF samples consisting of different components and composition ratios is prepared and the viscosity of each sample is measured at shear rates ranging from 0s−1 to 1000s−1. The results are tabulated and compared with human blood. Based on the results of the experiments conducted, the addition of polysaccharide particles was found to affect the viscosity of the BMF. The BMF sample with a composition of water 59.98 vol%, glycerol 40 vol%, 0.01 wt% xanthan gum and 0.01 wt% starch shows the smallest viscosity percentage difference when compared to the viscosity of actual blood. Viscosity plateau values was found at 3.71± 0.34 mPa.s which is within the range of actual normal human whole blood viscosity.
Monte Carlo Simulation of particle production in target material linac 15, 18, and 20 MV photon beam
Authors: Yani S , Budiansah I , Rhani M F , Haryanto F 
Published: June 2022

Abstract
Target is one of the important components in a linear accelerator (linac). Target materials depend on the energy of linac so that they have different spectrums produced. This study investigates the spectrum characteristic of target material for some linacs using Monte Carlo codes. The target geometry and material simulated was collected from Varian Medical System. The simulation was carried out on two different Monte Carlo codes, namely PHITS and EGSnrc. In the simulation process, the cut-off energy of electron and photon are set in the same value at 0.521 MeV and 0.01 MeV, respectively. The SLAB geometry is implemented to model the target. The spectrum of photon and electron was collected at the end of the target. The deviation of electron and photon spectrum collected from PHITS and EGSnrc was calculated. The results show that the spectrum of photon and electron from PHITS and EGSnrc have the same trend with a deviation of more than 25%. The maximum differences between the codes were obtained at energy 0.04 MeV<E<0.3 MeV for 15 MeV sources. Differences between PHITS and EGSnrc are more than 17% in electron energy 18 and 20 MeV. The big deviation is caused by the cross-section data applied in PHITS and EGSnrc being different in some photon and electron interaction cross-sections.
Solar radiation pressure on LAPAN A1 satellite due to extreme geomagnetic storm
Authors: Pratiwi N , Herdiwijaya D 
Published: June 2022

Abstract
This study will explain about disturbance potential on the LAPAN A1 satellite caused by solar radiation pressure during an intense geomagnetic storm period. During the storm period, satellite orbital parameter is affected due to the changing of solar radiation pressure, atmospheric chemical composition, and atmospheric density. Therefore, we analyze solar radiation pressure in the period of 11-years to compare the effect at minimum phase, maximum phase, and storm period. One of the most massive geomagnetic storms happened in 2003, so we chose 2003-2013 as the data period. To calculate solar radiation pressure on satellite, it needs data of daily total solar flux from Solar Radiation and Climate Experiment satellite (SORCE). Data processing is done by using python. Then we had calculated Solar Radiation Pressure values during a year to see the effects of the storm. However, the results show that the influence of the storm was not significant. For the follow-up research, we need high-resolution data to see the effects of the storm in more detail.
Gravity data processing of field camp geophysics in Karangsambung (2005-2019)
Authors: Wahyudi E J , Laesanpura A , Aji W 
Published: June 2022

Abstract
Gravity data was collected from a previous survey in Karangsambung 2005-2019 (before the restriction of field camp activities due to the Covid-19 pandemic). Luk-Ulo Mélange Complex in the Karangsambung area has been the subject of local and regional studies for geoscience students due to the interesting exposure of outcrops that have been interpreted as product of subduction (the Indo-Australian plate under the Eurasian plate in the Late Cretaceous to Early Paleocene time). The data for this gravimetric study based on 2592 observations over an area of inside (9.1 × 9.1) square kilometers. The gravity data were observed by students in the field camps for several years and then we compile. In this work we present simple data processing and simple calculation for modeling. The Bouguer anomaly map was processed using a density estimate of 2.31 g/cc for slab-Bouguer and terrain correction/reduction. The residual anomaly map was obtained by simple calculation of trend surface analysis (second order polynomial order). The inverse model was calculated using a simple algorithm for 2.5D and the program was built by accomodate topographic variations in the study area. Slice sections (SW-NE) of residual anomalies with a length of more than 8 km were inverted to obtain the contrast density distribution as a subsurface model. The subsurface images can then be analyzed and correlated with geological surface maps in the study area. The work in this paper is mainly presented as an ilustration of simple data processing and inverse modeling, so that the outcomes of this work are: (1) Bouguer anomaly map, (2) residual anomaly map, and (3) contrast density distribution as SW-NE section in the Karangsambung area. The value of the Bouguer anomaly map from this study is in the range of 88 to 112 mGal, and the value of the residual anomaly map is in the range of -12 to 10 mGal. The contrast density distribution from the inverse model in this study is in the range of -0.3 to 0.6 g/cc.
The Study of Geomagnetic Activity from 2017 to 2020 Period
Authors: Ratnasari Elvina Ayu 
Published: June 2022

Abstract
Geomagnetic storm has been extensively studied and observed because it can interfere satellite and radio communications. Some parameters, such as Dst index, Kp index, north-south interplanetary magnetic field (Bz) and speed of solar wind (Vsw), can be used to identify the level of geomagnetic storm and assess its potential risk. Therefore, this paper provides the analysis of geomagnetic parameters and their correlation to geomagnetic activities during 2017-2020 period. The geomagnetic data, i.e. Dst, Kp, Bz, and Vsw, were obtained from the website: https://omniweb.gsfc.nasa.gov. The results indicated that some significant geomagnetic storms occurred during 2017-2020, which were shown by the sharp increase of the Dst index, which was also followed by the increase of Kp index, the increase of Vsw, and the extreme fluctuations of Bz index. Three big events occurred on May 28th 2017, September 8th 2017, and August 26th 2018, which had the Dst increase to as high as -125 nT, -124 nT, and -174 nT (< -100 nT), respectively, followed by seventeen minor storm events with Dst between -45 nT until -76 nT. The geomagnetic storm events were probably driven by earth-directed coronal mass ejection (CME) or halo CMEs or high-speed solar wind flows from coronal holes. This result was also supported with the data of flux electron detected at outer radiation belt that have been increased. It can be concluded that the north-south interplanetary magnetic field (Bz) and speed of solar wind (Vsw) have a strong correlation to geomagnetic storm events in which the increasing of Bz followed the increasing of Vsw.
Pulse Height Analyzer with Coincidence Correction
Authors: Saputra Casmika , Waris Abdul , Munir Muhammad Miftahul , Novitrian  
Published: June 2022

Abstract
A pulse height analyzer (PHA) is used to measure the frequency distribution of the signal output height of an event detector. However, the typical PHA algorithm has limitations in measurement; it cannot distinguish multiplet due to coincidence and singlet pulse. Coincidences will pile up the signals that make the pulse height value higher than it should be. Therefore, this study has developed a simple algorithm to calculate pulse height distribution with coincidence correction (PHA-CC). The developed algorithm firstly identified the coincidence pulse by considering its pulse width. The result shows that the developed algorithm could successfully distinguish multiplet and singlet pulses. The significance of pulse height distribution measured by the PHA-CC compared to regular PHA was also discussed in this paper.