bluuebunny/crossref_metadata_2025_split huggingface dataset:
On the experiment and design of the Tachi-Miura polyhedron’s radial load-bearing capacity
Authors: Ma Ye 
Published: March 2023

Abstract
Recent research has yet to note the structural performance of the radial direction. This paper experimentally verified the factors influencing the TMP’s radial load-bearing capacity and designed the new intermediate layer patterns for the radial extension. The methodology first assumed the axial motion of TMP as the approaching among sections. Based on the analysis, the relationship among the parameters was revealed according to the experiments, which marked the TMP as a high-performance structure. The results proved the positive correlation between the axial pre-compression and the radial load-bearing capacity where the folding angle has reached the value range of the self-locking state. The new intermediate layer patterns were correspondingly designed to substantiate the hypothesis regarding the specific parts. The overlapped triangular facets and the concave vertex have enhanced the radial load-bearing capacity. The combination of the relevant parameters and the spatial attributes expands the application scope of the TMP configuration.
Process optimization and property of Ti-Al-Cr-Nb coating on titanium alloy surface by laser in-situ synthesis
Authors: Chen Ting Ting , Shi Yong Jun 
Published: March 2023

Abstract
Ti-6Al-4V alloys are popular structural materials for the production of critical components. However, its poor surface properties, such as friction and high-temperature oxidation, further limit its application scope. Ti-Al-Cr-Nb coating was deposited on the Ti-6Al-4V alloy through laser cladding. The tendency of cracks was low when the laser energy density was 14.33-8.19 kw · s · cm
−2, the corresponding effective process parameters were the laser power of 1600-1800 W matching the scanning speed of 4-6 mm/s. Due to the formation of Ti3Al intermetallic compound phase, and the lattice distortion caused by adding a small amount of Cr and Nb playing a role in solid solution strengthening, average vickers hardness of the coating was about 583.3 HV0.1, which was about 1.7 times that of the substrate.
Multi-domain united link adaptation technique in high-throughput satellite communication system
Authors: Liu Haike , You Yang , Shi Lifeng , Zhang Huajiian 
Published: March 2023

Abstract
Under the condition of using the same frequency resources, the communication capacity of high-throughput satellites is tens or even hundreds of times higher than that of traditional satellites. Compared with traditional satellites, high-throughput satellites have a large capacity, high speed, and anti-interference characteristics. However, the high-throughput satellite communication link using Ku/Ka-band is vulnerable to weather factors such as rain attenuation, so the system should have a control mechanism to achieve fade countermeasures. The existing methods include transmission power adjustment, mod cod adaptive adjustment, carrier symbol rate adjustment, etc. In this paper, various technical means are comprehensively used to compare and analyze the effect of combined control and propose a multi-domain united link adaptation technique to optimize link availability and resource utilization.
Simulation and data analysis of a fission time projection chamber based on Monte Carlo method
Authors: Zhang J. , Xiao J. , Sun J. , Chen H. , Peng T. , Zheng P. 
Published: March 2023

Abstract
In this study, we use Monte Carlo method to conduct
simulation research on a time projection chamber (TPC) which used
for fission cross-section measurement. Based on Garfield, SRIM,
COMSOL and other platforms and software, we explore the physical
process during its actual operation, and analyze the simulation
data. We carry out α particle track measurement experiments
with U-235 ultra-thin target, and the measured results are in good
agreement with the simulation results. This paper focuses on the
simulation and reconstruction of particle tracks at different
emission angles, and introduces the concept of ballistic deficit to
correct the experimental measurement results. The corrected 2D
distribution of particle track length and energy is closer to the
theoretical model than the uncorrected distribution.
The influence of solar variability on Atlantic basin tropical cyclones: a 10-year study
Authors: Syed Zaiful Hamzah S N A , Johari N I , Hamidi Z S , Shariff N M 
Published: March 2023

AbstractThe Sun is a dynamic celestial body that changes as the universe progresses through space and time. The Sun is by far the most important driving force of the climate system. This paper aims to study the impact of solar variability on our planet’s extreme weather, namely tropical cyclones in the Atlantic basin. From the year 2010 to 2020, we have analyzed the trend of Thermosphere Climate Index (TCI) values, Tropical Cyclone (TC) counts, and its maximum wind speeds. The r value presented by the Pearson’s correlation coefficient confirms a strong anti-correlation relationship of -0.719 between the TCI value and TC count. Meanwhile, the observed cyclone wind speed shows a moderately strong negative correlation with TCI values, with an r value of -0.520. The seasonal fluctuations in TCs are believed to be caused by a shift in thermal energy within the thermosphere.
Petrography of quartz sandstone in Nanggulan formation at Sermo area, Kulon Progo Regency, Daerah Istimewa Yogyakarta, Indonesia: implications on provenance and basin origin
Authors: Rizqi A F , Sastrawiguna G I 
Published: March 2023

Abstract
Provenance can be used to determine how the sedimentary rock formed, as reflected in the mineral composition of lithology as the composition of sedimentary minerals. The Research area is located in the Hargowilis area, Kokap district, Kulon Progo Regency, Daerah Istimewa Yogyakarta Province. This Study uses a surface geological mapping method supported by laboratory analysis in the form of petrographic analysis. Based on the analysis of the sandstone provenance in the study area, the results show the research area is included in the Recycled orogenic provenance zone, foreland uplift sub-zone to continental block provenance with a dominant quartz percentage (92%). The tectonic setting in the research area was controlled by an orogenous process during the Eocene showing that the analysis is very relevant to the provenance in the research area which shows the source of recycled rock due to the orogenous process which is then deposited in the basins formed as a result of the process.
Preparation of biofertilizer blend from banana peels along with its application in agriculture and plant microbial fuel cell
Authors: Sogani M , Sonu K , Syed Z , Rajvanshi J 
Published: March 2023

Abstract
Bananas comprise essential nutrients which can be used for a variety of purposes. This study aims at the preparation of a bio-stimulating fertilizer from banana peels. Different physical and chemical characterizations of the extracted biofertilizer were performed. The biofertilizer extracted from banana peels was applied to a black gram crop grown in a plant microbial fuel cell (PMFC). According to the results, an increase in the dose of banana peel extract to the black gram crop caused the germination rate to increase. After 7 days of planting, the germination rate of the black gram crop improved from 12% (control without biofertilizer) to 100% (20 ml/l of biofertilizer). The maximum power density recorded in PMFC employed with biofertilizer was 260 mW/m2 which was 2.65 times higher than the control. Higher biomass was also obtained with the addition of biofertilizer in PMFC within 60 working days which in turn led to higher generation of bioelectricity.
Characteristic of asphalt emulsion modified with natural rubber latex
Authors: Kamal M I A M , Arshad A K , Ahmad J , Shaffie E , Rais N M , Grover S , Guyot X 
Published: March 2023

Abstract
Polymer modified asphalt emulsions offer superior performance and lifespan as compared to conventional asphalt emulsions or hot mix asphalt surface treatments, as well as reduced life cycle costs. This study’s objective was to examine the characteristics of latex-modified asphalt emulsions using a range of tests, including those for softening point, penetration, ductility, viscosity and solubility. In order to determine the optimal latex modified asphalt emulsion, latex was added into emulsion type CSS-1hP at various ratios ranging from 1 to 9 percent, with 2 percent interval while 0 percent serving as the control. From the experiments described, the best latex modified asphalt emulsion measurement was selected using a decision matrix analysis. Decision Matrix Analysis was performed to determine that asphalt emulsion with 5 percent latex is the best choice since it offers the highest quality polymer modified asphalt emulsion.
The green paving block made from the broken lightweight concrete brick: the preliminary study
Authors: Singthong Y , Nusit K , Subsomboon K 
Published: March 2023

Abstract
Presently, construction the building walls with lightweight concrete blocks in Thailand is very popular; however, lightweight concrete blocks are easily damaged during transportation to the construction sites. The waste generated from damaged lightweight concrete blocks requires proper management with an additional budget. Reusing the broken lightweight concrete block as aggregate for the concrete paving block is one of the waste management alternatives. Therefore, this research aims to evaluate the characteristics of concrete paving block made by broken lightweight blocks. The tests required by the Thai Industrial Standards Institute were followed in the research. The replacement percentages of the broken block by mixture weight equivalent to 0%,10%,20%, and 30% were employed to reduce the virgin-coarse aggregate used for concrete paving block manufacturing. The test results revealed that the compressive strength of the concrete paving block reduced by 0.06 ksc at every 1% of replacing the virgin aggregate by broken lightweight block. Moreover, the water absorption of the concrete paving block increased with the rise in amount of broken lightweight blocks. These might be caused by the porous cement mortar adhered on the broken lightweight blocks. Therefore, the modification of broken lightweight blocks is required prior to employ this waste as the aggregate for concrete paving block mixture.
Building YoloV4 models for identification of rock minerals in thin section
Authors: Pratama B G , Qodri M F , Sugarbo O 
Published: March 2023

Abstract
Rock mineral identification is a costly and time-consuming task using conventional methods of testing physical and chemical properties, especially in the petrographic laboratory. A comprehensive identification model for three rock minerals in sedimentary rocks based on the YoloV4 model is available as a solution. The models predict rock minerals by calculating the pixels and the weights that have been trained previously. First, the YoloV4 models and framework were built. Then, a total of 44 manually labelled thin section images (sedimentary rocks thin section) were used to create the model to detect minerals accurately. The MAP and loss results showed that the parameters of the minerals detection model in PPL are 11% and 1.19, respectively. Meanwhile, The MAP and loss results of XPL are 19% and 1.18, respectively. Finally, Identification of rock minerals using deep learning algorithms is a very promising idea especially the YoloV4 model can build a comprehensive detection of rock samples in thin sections effectively.
Design and documentation as attributes to waste generation at construction sites
Authors: Moeis A A A , Che Ahmad A , Tharim A H A , Othman N 
Published: March 2023

Abstract
Rapid demand of housing and infrastructure development in Malaysia had result in more construction and consequently increase the construction waste. Construction waste takes major impact to the environmental if there is no proper management of construction waste from earliest point of waste generated until waste disposal. Thus, it is important to identify attributes influencing construction waste generated at construction sites. This study aims to determine design and documentation as attributes of construction waste generation. This study was conducted at Putrajaya, Malaysia. Putrajaya was selected because this city is pioneer in urban development in measuring and promoting green development activities in Malaysia. Quantitative study using questionnaire survey was conducted at construction sites in Putrajaya. A total of 21 respondents from the construction sites have returned the survey. Using relative importance index (RII) as the analysis tools, this study determined that the design and documentation are waste generation attributes at construction sites. Findings of this study could assist more comprehensive study in determining the attributes of waste generation at construction sites.
Data stories and dashboard development: a case study of an aviation schedule and delay causes
Authors: Salleh S S , Shukri A S , Othman N I , Saad N S M 
Published: March 2023

Abstract
In this case study, five key processes in modelling a data story of aviation data patterns during COVID-19 have been executed. It started with the collection of secondary data from relevant sources. Data inspection, transformation, and preparation activities, including data cleaning, filtering, and sampling, are all included in this work. Iterative exploratory data analysis (EDA) has been conducted to determine the pattern of each independent attribute, followed by an assessment after the data story is modelled and integrated on a dashboard. The questionnaire has been distributed and the visuals were assessed by giving respondents a few tasks to interpret stories based on their comprehension. The result shows that the data stories have been interpreted in a similar narrative by all the respondents. The overall mean score is 4.71, and this significantly shows that the respondents agree and strongly agree that the visual objects help in communicating patterns and stories. The overall process gives researchers experience and guidelines for future work. Overall, the objectives of the study have been met. Nevertheless, it gives researchers a lot of experience in interpreting data, cleansing and transformation, analysis, modelling the visualisation by selecting suitable charts, and integrating the objects together into a dashboard.
Effect of milling time variation on TiTaVWCr HEA powder as nuclear material on microstructure and mechanical properties by a mechanical alloying method
Authors: Sutrisna  , Prasetiyo A B , Kartikasari R , Aziz I 
Published: March 2023

Abstract
TiTaVWCr HEA alloy is a refractory material that is often used as nuclear material. This research uses powder material and milling using the mechanical alloy method. This research aimed to determine the microstructure and mechanical properties of the TiTaVWCr HEA alloy milling process for 4 h, 8 h, 16 h, and 24 h. Tests were carried out using XRD spectra and Secondary Electron Microstructure-Energy Dispersive Spectroscopy (SEM-EDS) to determine the characteristics of the material and its microstructure. The results showed that the HEA model with low milling (4 h and 8 h) microstructure distribution was not uniform, and there was agglomeration in certain areas. After milling was increased to 16 hours, the distribution of elements became uniform, but oxides appeared on Ti became in the formation of Ti-O. The hardness value shows that the longer the milling time, the higher the hardness. This phenomenon is related to the increase in grain dimension, and dislocation density.
Efficiency enhancement of dye-sensitized solar cell with PVdF-HFP:MPII:NaI quasi-solid-state electrolyte
Authors: Zakaria P N M , Saaid F I , Raffi A A M , Noor I S M , Woo H J , Tan W 
Published: March 2023

Abstract
Quasi-solid-state polymer electrolyte (QSSPE) based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) was prepared using sodium iodide (NaI) salt, 1-methyl-3-propylimidazolium iodide (MPII) ionic liquid, propylene carbonate (PC) and 1,2-dimethoxyethane (DME) plasticizers. This paper discusses the effects of using a binary mixture of large (MPII) and small (NaI) cation alkaline salts on enhancing the performance of DSSCs with gel polymer electrolytes. The amount of NaI was varied while the other components were kept constant to study the dependence of dye-sensitized solar cell (DSSC) performance on NaI amount. The incorporation of NaI in PVdF-HFP-MPII-PC-DME has enhanced the efficiency of DSSC. DSSC with 0.6 M MPII and 0.4 M NaI showed the highest efficiency of 4.16 % and short circuit current density (J
sc) of 13.63 mAcm−2. Additionally, the roles of TBP and GuSCN as co-additives in the electrolytes were also discussed in this paper. The presence of 4-tert-butylpyridine (TBP) and guanidine thiocyanate (GuSCN) further enhanced the efficiency from 4.16 to 6.95 %.
Investigation of mechanical, microstructure, and corrosion properties of duplex stainless steel joint for natural gas processing facilities
Authors: Pamuji D S , Hakim M L , Sutrisna  , Novianto  
Published: March 2023

Abstract
Duplex stainless steel is an exotic material known for its excellent corrosion resistance and mechanical properties due to the presence of a two-phase structure that is quite balanced between ferrite and austenite, making it one of the top choices for the oil and gas industry. In this paper, we will discuss the process and investigation of the welding results of the A/SA 790 UNS 31803 duplex pipe joint which is connected using the gas tungsten arc welding (GTAW) process for gas purification process applications. The welding process and qualification is based on the ASME BPVC Sec code. IX was then tested to obtain information on the characteristics of the mechanical properties, microstructure, and corrosion resistance of the resulting joints. Heat input in the welding process is a crucial factor that determines the equilibrium of the ferrite and austenite phases which then correlates with the mechanical properties and corrosion resistance of the joint. Based on the microstructural analysis, there was a decrease in the ferrite phase in the weld metal, but it was still within the required limits. Furthermore, the results of the mechanical properties test showed that the tensile strength of the joint was greater than the tensile strength of the base metal and no open discontinuity was observed in the bending test. The corrosion test showed no signs of pitting corrosion with a weight loss value of 1.7 g/m2.
Numerical analysis of the influence iron type on Von Mises Stress and safety parameters for compost processing machine frame construction
Authors: Prasetiyo A B , Sekarjati K A , Sutrisna  
Published: March 2023

Abstract
The installation of other engine parts, such as the engine, transmission, shaft, blade, and cover, includes the engine frame. The engine frame must be developed and constructed with the strength to support other components. The building of the waste processing machine frame with variants of square tube type and angle bar type will be analyzed in this study, with a focus on the analysis of von Mises’s stress and safety aspects. Using Solidworks software, finite element analysis is the research methodology used. The examination of the waste processing machine’s frame modelling using square tubes and angular bars yielded maximum von Mises stress values of 3.77e+7 N/m2 and 3.162e+4 N/m2, respectively. The maximum deformation values for the square tube iron and angular bar used in the modelling analysis of the waste processing machine frame are 2,499e+1mm and 9,725e+1mm, respectively . and 8.5 and 1 is the required minimum safety factor value for modelling the frame of a waste processing machine made of square tube iron. The safety factor value of 2-3 is the primary criterion for a suitable design. It is safe and advised to utilize the waste processing machine frame made of square tube iron for this purpose.
Lithium Extraction Method from Geothermal Brine to Find Suitable Method for Geothermal Fields in Indonesia: A Review
Authors: Suud Esty Mustika , Suryantini  , Mubarok Muhammad Zaki 
Published: March 2023

Abstract
Lithium has become an essential metal for modern industries. Specifically, the growth of battery-based electric vehicles will demand much more lithium shortly. Many studies have been conducted to find the sources of lithium; one of them is geothermal brine. Indonesia has enormous geothermal resources; some fields have lithium content that can potentially be extracted. Various methods in the extraction process of lithium from the geothermal brine have been developed, both on laboratory and pilot projects. Conventionally, solar evaporation has been used to concentrate lithium from brine, but it takes a long time and depends on the weather. Thus, a more rapid and selective process is desired to fulfill the market demand and avoid weather constraints. This paper reviews the lithium extraction from the geothermal brine by direct extraction methods using solvent extraction, adsorption and ion exchange, membrane, and electrodialysis. The study is based on a desktop study and aims to summarize the knowledge, method, technology, and techniques of lithium extraction from geothermal brine that has already been used and to find out which extraction method is suitable for the Indonesian geothermal field. Multiple-stages solvent extraction from geothermal brine well X in Dieng performed by the authors demonstrated a lithium extraction efficiency of 94% and indicated an opportunity to be further investigated to extract lithium from the Dieng geothermal brine.
Assessing capacity to deploy direct air capture technology at the country level – an expert and information entropy comparative analysis
Authors: Izikowitz David , Li Jia , Wang Eryu , Zheng Biao , Zhang Yuquan W 
Published: March 2023

Abstract
An ever-dwindling carbon budget, resulting in temperature rise of 1.5 °C above pre-industrial levels projected between 2030–2035, has generated a necessity to explore climate mitigation technologies such as direct air capture (DAC). DAC typically involves the use of materials and energy to capture CO2 directly from the atmosphere. However, DAC technologies remain a long way from the necessary level of development and scale needed to move the needle on carbon removal and mitigating against climate change. This study conducts a country-level analysis using an expert elicitation and an information entropy method, with a weighted group of variables identified from existing literature as necessary to develop and deploy low-temperature, electrochemical and high-temperature DAC technologies. Here we show that: (1) adopting the expert survey variable weighting, USA, Canada, China and Australia are best positioned to deploy the various DAC technologies; (2) the information entropy approach offers a broadly similar result with traditionally developed nations being best positioned, in addition to land rich countries, to deploy DAC technologies; (3) a comparatively developed policy and financing environment, as well as low carbon energy supply would raise a country’s DAC capacity; (4) developing countries such as China have significant potential to deploy DAC, owing to a well-rounded position across variables. These results produce wide-ranging policy implications for efforts to deploy climate mitigation technologies through the development of a multilateral, coordinated mitigation and carbon dioxide removal deployment strategy.