bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research and Prospect on Key Technologies of Indoor Positioning Based on Visible Light Communication
Authors: Cao Yong , Zheng Yifan , Wang Xiao , Liu Yanbo , Liu Yi 
Published: January 2022

Abstract
Indoor positioning has become a research hotspot because of its important application value in industrial production and daily life. Traditional wireless positioning technologies such as Wi Fi and Bluetooth are difficult to achieve high-precision indoor positioning due to electromagnetic interference and multipath effect. The modulated white LED can not only meet the needs of lighting, but also transmit the location information to achieve high-precision indoor positioning. This paper first introduces several modulation methods commonly used in visible light positioning system, compares the characteristics of different modulation methods, and proposes a modulation method suitable for visible light positioning; Then, two demodulation methods of the visible light positioning system are introduced and discussed; After that, several visible light location algorithms are introduced, and the performance of each algorithm is analyzed in detail; Finally, the problems in visible light positioning are discussed and prospected.
Cable Temperature Alarm Threshold Setting Method Based on Convolutional Neural Network
Authors: Wang Lei , Niu Lin , He Xingwang , Guan Meng , Li Hongbo , Ma Zhiguang 
Published: January 2022

Abstract
Power cable is used more and more in the power network, and its significance to the safety and stability of the power network is increasingly prominent. Especially in the urban power grid, the high voltage cable is related to the normal production and life of the city. Because of the particularity of the laying environment, it is very difficult to find and eliminate the fault points once the cable faults occur, which seriously affects the reliability of the power grid. Currently, 25% of cable faults are caused by elevated cable temperature, so it is important to set the cable temperature alarm threshold accurately. In this paper, a method of setting temperature alarm threshold using convolutional neural network is proposed. Experiments show that this method is 60% more accurate than other methods.
Residue from coal combustion for plastic soil improvement
Authors: Gallardo Amaya R J , Coronel Rojas J , Cely Calixto N J 
Published: January 2022

Abstract
The combustion of coal in Hoffman-type furnaces generates ash as one of the process residues. This research seeks to make use of this residue to improve plastic subgrade soils in tertiary roads, considering that in Colombia a large percentage of these are not paved. A soil with high plasticity has been selected to make mixtures with ash dosages that vary from 0% to 15% with respect to the dry weight of the soil. To determine the variation of the physical and mechanical properties of the soil-ash mixtures tests of consistency limits, compaction tests, and California bearing ratio were carried out. The results showed that the mixture in which 12% of the coal combustion residue is added to the soil, as a percentage for the dry weight of the soil, has a better physical behavior and bearing capacity than the soil in its natural state. obtaining an increase of up to 75% in the California bearing ratio.
Manufacture of reinforced nano metal melt aluminum sponges for oil collection in spill from water sources
Authors: Perez-Rangel N Y , Florez-Solano E , Espinel-Blanco E 
Published: January 2022

Abstract
At present, it is necessary to use various materials to manufacture parts used in different fields such as industry, food, automotive, aviation, etc. Depending on the purpose of the part is the manufacturing process and the materials used, the most widely used material is aluminum, for its mechanical properties and low strength/weight ratio, aluminum is one of the most demanded materials, you can find various manufacturing processes, by casting, molding, injection and machining, This last process is developed by separating materials in the form of fragments, so that the required parts can be created, the chips are completely discarded, causing environmental contamination. This research aims to recover aluminum chips produced in the metal processing workshop and machine tool laboratory of the Universidad Francisco de Paula Santander, Seccional Ocaña, Colombia, to create a metal sponge of aluminum that will also allow nano-reinforcement with carbon nanotubes under special conditions for the collection of petroleum or petroleum derivatives when environmental impacts occur on water sources, in this way, the use of aluminum chip will help protect the environment and the metal sponge will reduce the risk that oil and its derivatives will generate environmental impact reflected by the spill in water sources.
HEXITEC 2 × 2 tiled hard X-ray spectroscopic imaging detector system
Authors: Jowitt L. , Wilson M. , Seller P. , Angelsen C. , Wheater R.M. , Cline B. , Schöne D. , Lauba F. , Goede M. , Ball R. , Verhoeven M. , Gottseleben G. , Boone M.N. , Van Assche F. , Veale M.C. 
Published: January 2022

Abstract
HEXITEC is a spectroscopic imaging X-ray detector technology
developed at the STFC Rutherford Appleton Laboratory for X-ray and
γ-ray spectroscopic imaging applications. Each module has
80 × 80 pixels on a 250 μm pixel pitch, and
has been implemented successfully in a number of applications. This
paper presents the HEXITEC 2 × 2 detector system, a tiled
array of 4 HEXITEC modules read out simultaneously, which provides
an active area of 16 cm2. Systems have been produced
using 1 mm thick Cadmium Telluride (CdTe) and 2 mm thick Cadmium
Zinc Telluride (CdZnTe) sensor material. In this paper the system
and data processing methods are presented, and the performance of
the systems are evaluated.

The detectors were energy calibrated using an 241Am
sealed source. Three types of charge sharing correction were applied
to the data-charge sharing addition (CSA), charge sharing
discrimination (CSD), and energy curve correction (ECC) which
compensates for energy lost in the inter-pixel region. ECC recovers
an additional 34 % of counts in the 59.5 keV peak in CdTe
compared to the use of CSD; an important improvement for
photon-starved applications. Due to the high frame rate of the
camera system (6.3 kHz) an additional End of Frame (EOF) correction
was also applied to 6.0 % of events to correct for signals that
were readout whilst the signal was still forming. After correction,
both detector materials were found to have excellent spectroscopic
performance with a mean energy resolution (FWHM) of 1.17 keV and
1.16 keV for CdZnTe and CdTe respectively. These results
successfully demonstrate the ability to construct tiled arrays of
HEXITEC modules to provide larger imaging areas.
Predation behaviour of Myopopone castaneae SMITH ants against some insect larvae in the laboratory
Authors: Salim M N , Marheni  , Bakti D 
Published: January 2022

Abstract

Myopopone castaneae ants are known to be predators of the larvae of Oryctes rhinoceros. These ants attack their prey alive by biting and stinging them to death before the hemolymph fluid is consumed. Despite the minimal information available, these ants have the potential to prey on 2.8 - 3 larvae for a period of 5 days. Therefore, the purpose of this research was to evaluate the predation behavior of M. castaneae ants against several types of insect larvae in the laboratory. This investigation was performed at the pest laboratory, Faculty of Agriculture, North Sumatra University from May to July 2020. The results showed the fastest prey time of 2-3 days on 3 Omphisa fuscidentalis larvae, while the longest was observed against Rhynchophorus ferrugineus species, at 3 larvae for 6-7 days. In addition, the typical predation behavior and symptoms include the presence of scars and gradual blackening on the cuticles. Moreover, ants tend to carry their offspring to the dead larvae of O. rhinoceros and R. ferrugineus, while O. fuscidentalis is conveyed to the nest for consumption by the colony.
Growth responses of maize-soybean intercropping system and its potential for cattle feed in Bali
Authors: Sari A R K , Dharmawan R , Yasa I M R , Kamandalu A A N B , Aryawati S A N , Hidayah I N , Sutresna I N 
Published: January 2022

Abstract
There had been a 2.145 ha fields transition in Bali which had a major impact on the loss of food production. However, there was raise in the population annually, therefore it disrupts local food security. Effort to raise the effectiveness and agricultural productivity areas through changing cropping system from monoculture to intercropping. This study aimed to find out the growth responses of maize and soybean crops cultivated by monoculture and intercropping planting systems and its carrying capacity for cattle feed. The study was arranged using a randomized block design with 3 treatments and 3 replications, namely: T1: Bima 20 URI VUB maize seeds in monoculture (40cm x 20cm x 80cm; 1 seed/hole or 70cm x 40cm x 100cm; 2 seeds/hole); T2: Anjasmoro, Deja 2 and Devon soybean VUB seeds in monoculture system (40cm x 20cm; 2-3 seeds/hole); T3: maize-soybean intercropping; Maize (2 rows; 40cm x 12.5; 2 seeds/hole); Soybeans (4 rows; 30cm x 10cm; 2-3 seeds/hole); both distance: 40cm. Data collected were growth performance, yield components and yield capacity of both maize and soybean crops also competition and profit value of maize and soybeans crops cultivated by intercropping planting system. The results showed that monoculture maize crops cultivated by monoculture planting system were better than it intercropped with soybean crops in terms of growth parameters. However, intercropping maize and soybean were produced greater yield components on cobs number, cobs and grains weight than monoculture (P<0.05), except grains weight per cobs. The monoculture soybean plant in growth, components and yield parameters were greater than intercropping (P>0.05). The ATER, LER, RCC, CR, and AYL values were 3.24; 1.28; -2.69; 4.58; -0.098 on maize and 2.52; 0.84; 1.82; 0.21; -0.158 on soybean. Those result was followed by carrying capacity in intercropping system by 30% usage can be used for 1.804 AU meanwhile 40% usage was sufficient for 1.353 AU. Intercropping system can be recommended to farmers to increase growth responses of maize-soybean and its potential carrying capacity for cattle feed.
Application of local microbes increases growth and yield of several local upland rice cultivars of Southeast Sulawesi, Indonesia
Authors: Wijayanto T , Boer D , Aco A , Mu’min N , Khaeruni A , Asniah  , Rahni N M , Hisein W S A , Arsyad M A , Mudi L , Satrah V N , Karimuna L 
Published: January 2022

Abstract
Rice is the major food commodity in Indonesia and many other countries, as the main source of carbohydrate. Rice production must be increased continuously to meet food needs, one of which is by utilizing largely available dry land areas. Two important factors required to increase rice production on marginal soils are the use of high-production adaptive varieties and biological agents. It is necessary to conduct research on the application of local microbes to the cultivation of upland rice cultivars, with the aim to determine the best genotypes and/or suitable microbes. This research was carried out at the Research Field and laboratories of Faculty of Agriculture, University of Halu Oleo, from April 2020 to April 2021. The first tested factor was biological agents (local microbes), consisting of three levels, namely: without microbes (M0), the fungus Trichoderma sp. (M1), and the bacteria Pseudomonas sp. (M2). The second factor was the upland rice cultivar, which consisted of five levels, namely: V1 (Tinangge cultivar), V2 (Enggalaru cultivar), V3 (Bakala cultivar), V4 (Momea cultivar), and 1 nasional variety, namely V5 (Inpago-12 variety), as check variety. The research results showed that the interaction between local microbes Trichoderma sp. (M1) and Pseudomonas sp. (M2) on Tinangge (V1) and Momea (V4) cultivars gave a better effect on crop production. The best cultivar based on the growth and yield variables was generally obtained from the Momea cultivar (V4), although in many variables it was not significantly different from the Tinangge cultivar (V1). These cultivars could be further studied and possibly developed for promising cultivars in Kendari areas.
Effect of rumen degradable protein and sulfur supplementation on in vitro digestibility and ruminal fermentation
Authors: Rosmalia A , Astriani  , Sahroni W P , Permana I G , Despal  
Published: January 2022

Abstract
The availability of nitrogen and sulfur in the rumen should be synchronized to generate microbial protein synthesis. This study aimed to evaluate rumen degradable protein and sulfur supplementation on in vitro digestibility and ruminal fermentation. The experimental design was a 4 x 3 factorial randomized block design. Factor 1 was RDP levels (%CP) (R1= 60%; R2= 55%; R3= 50%; R4= 45%), and factor 2 was sulfur supplementation (S1= 0%; S2= 0.1%; S3= 0.2%). Data were analyzed with ANOVA followed by the Duncan test. The result showed that sulfur supplementation improved DMD and OMD without changes in rumen pH. NH3 concentration was influenced by RDP levels. Treatment R1 had the highest NH3 concentration (7.03 mM). There was an interaction of two factors on total VFA concentration. The combination of R1 and S2 resulted in the highest total VFA concentration than others. The total bacteria population increased with increasing RDP levels. Protozoa population was affected by RDP levels and sulfur supplementation. This study concluded that a combination of 60% RDP and 0.2% sulfur supplementation resulted in the best ration to improve ruminal fermentation and digestibility.
Evaluation of nutritive values and digestibility’s cacao( Theobroma cacao L.) pod husk fermented with lingzhi mushroom (Ganoderma lucidum) at different concentration and incubation time
Authors: Hidayat T , Al-Majid F , Wajizah S , Usman Y , Samadi  
Published: January 2022

Abstract
Cacao pod husk has been widely utilized as animal feed. The purpose of this study is to evaluate nutritive values and digestibility of fermented cacao pod husk with different concentration and incubation time. A completely randomized factorial design consisting two factors; lingzhi mushroom concentration (K1 = 7,5%; K2 = 15%) and incubation time (L1 = 15 d; L2 =30 d; L3 = 45 d) was employed in this study (n=3 replicates). Proximate analysis was performed to determine nutritive values of fermented cacao pod husk. Fermented samples were then subjected to an in vitro digestibility with rumen fluid and McDougall’s buffer mixture. The results of study reveal that cacao pod husk fermented with the concentration of 15% at 15d and 30 d significantly increased (P<0.05) crude protein content but not for other parameters. Dry and organic matter digestibility of cacao pod husk fermented with 7.5% of lingzhi mushroom at 45 d significantly improved (P<0.05) in vitro dry and organic matter of treatment. In conclusion, cacao pod husk fermented with different concentration and incubation time was able to improve the nutritive values and in vitro digestibility of cacao pod husk.
Green environment: Effects of acetate buffer on cellulose production by Acetobacter xylinum 0416 in fermented static cultivation
Authors: Hishammuddin N , Radzun K A , Syafiq M H , Rahman S A , Bahari S A , Osman S , Abu F , Zakaria M N 
Published: January 2022

Abstract
Bacterial cellulose (BC) white leathery pellicle produced from fermentation process of Acetobacter xylinum has many advantages such as high-water holding capacity, high porosity and high purity compared to plant cellulose. However, one of the BC application problems in industry is its low bio-cellulose productivity. The significant decrease of BC production can be effected by the reduction of pH culture due to production of by-product, gluconic acid during the static fermentation process. Therefore, the production of BC pellicle would be improved efficiently by controlling the pH of BC static cultivation. Bio-cellulose dry weight was at the greatest in acetates of 5.66 g/L while the dry weight derived from BC is 2.72 and 2.56 g/L in Control and Hestrin and Schramm (HS). The acetate buffered medium can be completed in a static fermentation method which can improve BC film production effectively.
Performance, carcass traits, and relative organ weight of broiler supplemented by guanidinoacetic acid: A meta-analysis
Authors: Hardiyanto Y , Jayanegara A , Mutia R , Nofyangtri S 
Published: January 2022

Abstract
Guanidinoacetic acid (GAA) is formed by the arginine and glycine that are catalysed by arginine:glycine amidinotransferase in the kidney. In the liver, GAA is methylated by s-adenosyl methionine and converted to creatine, then deposited into muscle as energy supply. This meta-analysis was done by integrating 20 articles from various journals. Supplementation doses ranged from 0 to 8000 ppm/kg feed. The mixed model methodology was employed with GAA level and broiler strain as fixed effects and studies as random effects. The results showed that increasing GAA level improved average daily gain day 0-21 and reduced feed conversion ratio day 0-35 (P<0.05). A higher GAA also accompanied by decreasing relative liver weight (P<0.05). GAA supplementation did not affect average daily feed intake and percentage of carcass traits (carcass, legs, breast, wings, drum, thigh) and other parameters such as abdominal fat, gizzard, heart, bursa, thymus and spleen (P>0.05). It was concluded that supplementation of GAA improved the performance of broilers.
Physicochemical properties of particulate matter (PM2.5) from the steel industry in Indonesia
Authors: Ermawati R , Setiawati I , Irwinanita  , Ariani A 
Published: January 2022

Abstract
Particulate matter (PM) as one of the pollutants in the atmosphere needs to be studied. PM has physical and chemical characteristics and is called physicochemical properties. These properties vary depending on the source of the PM. PM samplers are used for air sampling to characterize some fine particles (PM2.5). The PM2.5 samples have collected from four sampling sites in the steel industry in Cilegon, Indonesia. The sampling sites are the main gate, the hot strip mill, the billet post, and the hot blast plant. The sampling period was four months. The physicochemical properties analysed are morphology, elements content, heavy metals, and particle size. The instruments used to analyse were Scanning Electron Microscopy (SEM) and Energy Dispersive Spectrometry (EDS), Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES), and Particle Size Analyzer (PSA). The morphology of PM2.5 detected varied, but the elements and the most elements found were F and C particles. The metals concentration was below the Indonesia Regulation. While the average particle size analysed was below 2,500 nm. The physicochemical properties of PM2.5 are affected by the type of production process in the industry.
Utilization of areca nut (Arecha chatechu L.) extract for tannin based colorimetric indicator in smart packaging
Authors: Yanti N R , Andika M , Maulida S , Riani  , Sulaiman I , Erfiza N M 
Published: January 2022

Abstract
Areca nut contains tannin which has a great potential to apply as natural colour agent in food industries. Tannin offers specific colour and alter its colour due to environmental sensitivity. This study aims to fabricate a tannin-based colour indicator from areca nut in smart packaging in the form of a strip type and to characterize the indicator at different storage conditions and at various pH solutions. The indicators were synthesized using filter paper (No.1 and No.42) soaked in a solution with 1, 3, and 5% areca nut ethanolic extract. Then the indicators were stored at room temperature and 4-7°C for 10 days, then their Red Green Blue (RGB) coefficient values were measured. Characterization of the indicators at pH 3-10 were also determined by RGB coefficient. The results showed that the indicator stored at 4-7°C had more stable RGB coefficient than the indicator stored at room temperature indicated the indicator was influenced by the temperature factor. The indicator offered a potential to be used as a sensor on packaging of temperature sensitive foods. The indicator using Whatman paper No.42 with 1% of extract steadily decreased in RGB coefficient and changed its colour to darker in basic pH solution while the indicator with other treatments had unstable alteration RGB coefficient and colour.
An overview of potential production of bio-lubricant in Indonesia
Authors: Mairiza L , Zuhra  , Khadafi M , Muhibbul  , Budiman I , Yunardi Y 
Published: January 2022

Abstract
The European Union’s embargo on Indonesian crude palm oil (CPO) has resulted in excess of domestic palm oil reserves. The embargo has resulted in a build-up of domestic CPO due to the fact that the majority of Indonesia’s CPO production is exported overseas. The CPO price has dropped in recent months as a result of CPO overstock. On the other hand, as a by-product of rice production, Indonesia produces millions of tons of rice bran. The bran is treated more as waste than a resource for raw material to produce valuable products, such as bran oil. The need for lubricants in Indonesia is expected to rise as the number of cars and industries grows. As a result, some lubricant requirements must be met through importation because domestic manufacturing is insufficient. Palm oil and bran oil are both excellent candidates for conversion into biolubricants. This paper looks at the possibility of biolubricant production in Indonesia using alternate raw materials rather than petroleum-based sources. The paper begins by detailing the country’s lubricant demand, then moves on to the probable availability of biolubricant raw materials in Indonesia, and finally to the biolubricant process production method.
Sustainability cultivation and traditional conservation of taro diversity in Bogor Indonesia
Authors: Maretta D , Sobir  , Helianti I , Purwono  , Santosa E 
Published: January 2022

Abstract
Fresh taro and its processed products have been produced in Bogor for decades. It has become a popular commodity from this city and evoked an image of Bogor. The essential component of this issue is the sustainability of taro farming, and farmers are the major preserver who has primary decision-making in agricultural management. It assumes there were unusual agricultural practices that promote the long-term viability of taro cultivation. Farmers’ consideration of taro cultivation and their on-farm activities were observed, and the impacted-on sustainability was studied. We surveyed 30 taro farmers in 8 districts Bogor with a rapid rural appraisal and field observation to validate the obtained data and plant diversity analysis. The result showed that taro has provided more income for farmers, and they prefer an intercropping approach in taro farming. Seed availability was the main consideration of farmers in cultivating this plant consistently for a long time. The seed rotation by seed sharing between farmer’s communities was the mechanism of seed exchange and spread of taro cultivars. There was also found the diversity of taro that divided into three groups similarities and simply to distinguish by the plant stature, color of petioles and corms cross-section.