bluuebunny/crossref_metadata_2025_split huggingface dataset:
Gembili (Dioscorea esculenta) tube modification via hydrogen peroxide oxidation
Authors: Bahlawan Z A S , Damayanti A , Arif Majid Nur , Herstyawan A , Hapsari R A 
Published: February 2020

Abstract
Dioscorea esculenta or known as gembili in Indonesian is a tuber that can grow easily in almost tropical areas. Gembili is one of the important food sources in the tropical regions. It contains 22.44% carbohydrate which makes it very potential to be developed into tuber flour. This study aims to improve the quality of gembili flour by assessing the effect of several parameters such as oxidation time, the ratio of slurry, and agent concentration on swelling power level. The optimum condition of the oxidation process was at the ratio of slurry 10% with 2% of H2O2 concentration and 60 min operation time that presented the swelling power level of 7 (g/g). Therefore, this swelling power of gembili flour complies with American wheat standards.
Cancerous object detection using morphological region-based active contour in ultrasound images
Authors: Nugroho Anan , Hidayat Risanuri , Adi Nugroho Hanung , Debayle Johan 
Published: February 2020

Abstract
Ultrasound is widely utilized in radiological screening to achieve early cancer investigations. Alongside this utilization, the need of object detection and segmentation techniques highly increases as crucial procedure of computer aided diagnosis tool. In addition, the industrial revolution 4.0 also demands automation and digitization in every technological development including computer aided diagnosis systems. This paper presents a morphological region-based active contour called MoRbAC to automatically detect the cancerous objects. Global level set active contour is initially employed to quick segment all objects in the whole image. Inhomogeneity in ultrasound images will lead to erroneous segmentation result. Hence, several morphology operations are taken to enhance it. The cancerous objects are then specifically detected by comparative calculation of area similarity. The proposed MoRbAC was tested in the real ultrasound images of breast and thyroid which validated by manual ground truth localization. Measurements of overlapping and disagreement regions are applied as quantitative indexes to demonstrate its performance. Average values of each validation has achieved i.e accuracy 98.58±0.89%, sensitivity 89.58±7.69%, specificity 99.58±0.11%, precision 95.58±2.77%, similarity 92.36±4.67%. In conclusion, the high performance of MoRbAC indicates its potential for practical applications in ultrasound computer aided diagnosis.
Master Data Management Planning: A Case Study of Flight Information System at PT Angkasa Pura I (Persero)
Authors: Putra R I P , Nurahman J P , Yana R R , Winarno H , Hidayanto A N , Harahap N C 
Published: February 2020

Abstract
The flight information system used for flight data management at PT Angkasa Pura I (Persero) uses several applications that have different features. This results in inconsistent values that affect data quality due to absence of single master data source. Therefore, this study aims to provide recommendations to PT Angkasa Pura I (Persero) regarding the planning of master data management for flight information system according to its business processes. Master data management planning is carried out using the key user interview method, analyzing the database schema of each application, analyzing IT policy documents, and using the framework of the Data Management Body of Knowledge (DMBOK). The research succeeded in producing the needs of master data management at PT Angkasa Pura I (Persero) using collaborative methods and transaction hub architecture patterns. The results of this master data management plan are expected to help PT Angkasa Pura I (Persero) in managing and managing flight data so that there are no more inconsistent data between applications and can improve data quality.
A simulation study of parameters influencing microwave heating of seaweed (Eucheuma cottonii)
Authors: Hakim A R , Handoyo W T , Prasetyo A W 
Published: February 2020

Abstract
Currently, the process of drying seaweed has been using conventional technology, utilizing sunlight directly. It depends on weather conditions when the rainy season arrives, the drying process will take longer time even 3-4 days. The longer duration of drying causes seaweed’s quality degenerate. Previous studies have proved that drying materials use microwave energy can reduce processing time significantly. Heat transfer and electromagnetic field effect on seaweed drying in a microwave oven were studied using a three-dimensional simulation. The parameters observed included variations of power microwave (400, 500, and 600 W), seaweed thickness (3, 5, 7 cm), and waveguides position (top and side). Variation of magnetron energy in microwave heating is affecting the electromagnetic field’s value and changing seaweed temperature. As increasing received energy from the magnetron, seaweed temperature and electromagnetic field are ascending. Seaweed that is heated in 3 cm thickness results rising temperature higher than 5 cm and 7 cm thickness. Waveguide located at the top cavity is generating electromagnetic field value higher than it located at the side cavity. As verification method, heating fresh seaweed use microwave oven was resulting similar pattern both electromagnetic field and temperature. The lowest moisture content of seaweed is achieved at the treatment of 600 watt magnetron energy and 3 cm thickness of seaweed.
Electric power saving optimization simulation for the comfort of classroom lighting
Authors: Hangga Arimaz , Apriaskar Esa , Muanifatin Nisa Alim , Apriliyanto Muchlisin , Afandi Mohamad 
Published: February 2020

Abstract
Classroom lighting is one of the essential factors in learning process for students in a university. There are two types of lighting available to apply inside a classroom, i.e., natural and artificial lightings. This research aims to simulate classroom lighting management technology concerning Indonesia National Standard SNI 6197:2001 using Dialux software. The simulation result shows that the applied artificial lighting inside E11-210 room had not followed the standard yet, in 350 lux. The existence of both artificial and natural lightings has made E11-210 room were excessive in light intensity, despite successfully obeying the standard. This paper uses lamp power modification to optimize the light intensity efficiently without to infringe the standard. This paper also presents the potential benefit of implementing power modification in saving electricity usage costs for 56.94%.
Automated trash collector design
Authors: Othman Hirdy , Iskandar Petra Mohammad , Chandratilak De Silva Liyanage , Caesarendra Wahyu 
Published: February 2020

Abstract
The objective of this paper is to study, analyse and investigate the main contributor of plastic pollution which has become the world major infamous problem nowadays, and to explain our platform design which aim to help in reducing the issue of floating trash. Annually, more than 2 million tonnes of plastics have been tossed to water body and eventually washed away to the sea. Not just living marine organisms become targets and carrier of harmful viruses but some of marine animals suffer a direct mortality after plastic ingestion. Numerous negative impacts of plastic pollution to the environment and the society had been identified. This study shall include the methodology; classification of trash cleaning systems as well as the efforts to tackle this problem. Static and dynamic systems have been categorized to distinguish their effectiveness. As for this paper, the proposed design will be focusing on dynamic system which is fully autonomous. It is a multi-functional design which incorporated with different types of sensors. This paper also emphasizes the novelty and uniqueness of the proposed design as compared to existing ones; in terms of architecture and its functionality.
Comparison analysis of expanded polystyrene system (eps) and polyvinyl chloride (pvc) pipe as platform material of floating buildings in the coastal areas of Semarang
Authors: Pratiwi Adi Henny , Imam Wahyudi Slamet , Singgih Sudarmono Catur , Caqqul Islam Mochammad 
Published: February 2020

Abstract
The impact of tidal floods in the coastal area of Semarang greatly disrupts people’s activities and damages settlements and infrastructure buildings. Floating building is one of the alternative solutions to overcome the rising sea level. This study aims to compare 2 (two) floating housing material platforms, namely EPS (Expanded Polystyrene) and PVC (PolyVinyl Chloride). The analysis method of floating structure platform was carried out by using various indicators, namely, the uplift generated, the stability and costs. Based on the findings of the analysis, the uplift platform to bear building loads on the water surface showed a value of 0.2 ton / rod for Ø10 inches PVC pipes and 4 meters in length. Then, the uplift capacity of 0.9 tons / sheet was for EPS Styrofoam with dimensions of 2 m x 1 m x 0.5 m. The stability level of floating buildings on water was indicated by the high value of spectrum that was +3.23 m for PVC and +3.61 m for EPS. To support the loads of 54.01 tons, the comparison of material expenses and installation of PVC materials required a cost of IDR. 561, 561, 350.00; meanwhile EPS material cost IDR. 40, 420, 000.00.
Microstructural and tribological characterization of niobium boride coating produced on AISI 1020 steel via multicomponent boriding
Authors: Krelling A P , Almeida E A S , da Costa C E , Milan J C G 
Published: February 2020

Abstract
Niobium boride coating was produced on AISI 1020 steel by multicomponent boriding process. Boriding treatment at1000 °C for 4 h was followed by thermo-reactive diffusion technique at 1000 °C for 6 h under argon atmosphere. Microabrasive wear tests were carried out using SiC abrasive particles at slurry concentrations of 0.5 and 1.0 g cm−3. Normal loads of 0.49 and 0.98 N were used. NbB and Nb5B6 phases were identified by XRD analysis. The niobium boride coating thickness was 2.0 ± 0.5 μm and its hardness was 1360 ± 200 HK0.01. Owing to the presence of a porous region on the niobium/iron boride layers the abrasive wear resistance decreased comparing to the borided and untreated AISI 1020 steel. Rolling abrasion was the main wear mechanism observed.
Effect of bottom micro-crystalline diamond (MCD) layer and top nano-crystalline diamond (NCD) layer onto the tribological behavior of (MCD/NCD) bilayer film
Authors: Luo Yijie , Ma Li , Li Liang , Chen Yubo , Zhou Kechao , Yi Mingkun , Deng Biao , Yang Haohui , Xia Xin , Hua Tengyu , Yin Dengfeng , Wei Qiuping 
Published: February 2020

Abstract
In this study, a comparative study of a series of (MCD/NCD) bilayer films with different MCD grain sizes and NCD layer thickness deposited on cemented tungsten carbide (WC-Co) flat substrates was conducted by changing the deposition time. Tribological behaviors of these diamond films were evaluated by using a reciprocal tribometer without lubrication. In friction test against Si3N4 balls, the (3hMCD/6hNCD) bilayer film showed the lowest coefficient of friction (0.059) and wear rates of counterpart balls (1.75 × 10−6 mm3 N−1 m−1) because of its lowest surface roughness and higher sp2 content. This work provides a guide to choose suitable (MCD/NCD) bilayer basic structure in multilayer diamond film for getting a fine diamond film with low roughness and great tribological performance for different applications.
Temperature effect on propylene polymerization behavior over Ziegler-Natta catalyst with different cocatalyst systems
Authors: Pongchan Thanyaporn , Praserthdam Piyasan , Jongsomjit Bunjerd 
Published: February 2020

Abstract
This study focused on the effect of temperature in propylene polymerization behaviors up on different cocatalysts employed. It revealed that triethylaluminum (TEA) exhibited higher activity than tri-n-octylaluminum (TnOA) with the optimal temperature of 60 °C, whereas the over reduction of catalyst occurred at 70 °C. However, at low temperature (ca. 50 °C), the mixed cocatalysts (TEA + TnOA) gave the highest activity among the sole cocatalyst. This can be attributed to the occurrence and stabilization of proper Ti oxidation state (Ti3+) form as proven by the electron spin resonance (ESR) with the combination of cocatalysts. In addition, temperatures and types of cocatalyst did not have significant effects on morphology and crystallinity of polymer.
The effect of thermoplastic starch on the properties of polypropylene/high density polyethylene blend reinforced by nano-clay
Authors: Hammache Yassine , Serier Aicha , Chaoui Saliha 
Published: February 2020

Abstract
Polypropylene (PP) and high density polyethylene (HDPE) was melt-blended in pairs at a constant of 80:20 (mm) compositions; this blend is prepared by one-step reactive extrusion in a single-screw extruder. The present study aims to investigate the effect of thermoplastic starch (TPS) on the properties of PP and HDPE blend. This later has been investigated in the absence and presence of maleic anhydride grafted polyethylene (PE-g-MA), and reinforced by nano-clay. All the blends/nano-bio-composites were prepared in an internal mixer. The results indicates changes in the blends in terms of morphological, Mechanical, Thermal, structural and rheological properties. However, the different blends and nano-bio-composites were studied by means of Thermogravimetry (TG), Differential scanning calorimeter (DSC), Melt flow index (MFI), Izod impact (unnotched) tests, Scanning Electron Microscopy (SEM) and x-ray diffraction (XRD).
Effect of mixed halide contents on structural, electronic, optical and elastic properties of CsSnI3−xBrx for solar cell applications: first-principles study
Authors: Shakil M , Akram Arfan , Zeba I , Ahmad Riaz , Gillani S S A , Gadhi M Asghar 
Published: February 2020

Abstract
In this study, structural, electronic, optical and elastic properties of CsSnI3−xBrx perovskites are investigated by full potential linearized augmented plane wave method (FP-LAPW) with exchange correlation functionals GGA-PBE and GGA-mBJ as implemented in Wien2k. The calculated structural parameters for all compositions are in good correlation with literature. The band structures and density of states (DOS) are calculated by GGA which indicated that all these alloys have direct band gap. Furthermore, the band gaps are also calculated by employing modified Beck-Johnson’s (mBJ) exchange potential. The obtained band gaps with this method are found to be improved as compared to GGA. The calculated optical parameters show that these materials have the competency for light absorption and to retain it. These characteristics make them promising materials for solar cell applications. The elastic constants have also been calculated which revealed that all these compounds have ductile nature. The mixed halide contents are pioneered in this study and therefore, no data is in hand for estimation.
165 Prior Fracture Physical Dependence, Co-Morbidity and One-Year Survival of HIP Fracture Patients; Data from A HIP Fracture Registry in Sri Lanka
Authors: Abeygunasekara Thilina , Lekamwasam Sarath , Lenora Janaka , Alwis Gayani 
Published: February 2020

Abstract

Introduction
Hip fractures are associated with high mortality and morbidity. Many factors, before and after fracture, are linked with the survival of hip fracture patients. We analyzed the association between the one-year mortality and co-morbidity and physical dependence before fracture.

Methods
We used follow up data of Hip fracture registry maintained since September 2017. All patients with incident fragility hip fracture admitted to a tertiary care center in the Southern province of Sri Lanka were included and followed up. Information on co-morbidity (Age-adjusted Charlson co-morbidity index) was collected from previous records and interviews of patients and relatives. Barthel index-Sinhala version was used to collect information on physical dependence one week before fracture.

Results
Of 180 patients (149 women) followed up, 33 died within one year (mortality rate = 18%). Patients who survived were younger (mean age 75.6 vs 83.4ys, p &lt; 0.001) and had lower co-morbidity (mean Age adjusted Charlson co-morbidity index 4.9 vs 6.3, p &lt; 0.001) and higher Barthel index before fracture (97.4 vs 94.2, p = 0.001) when compared with those who died. Areas under curve (AUC) in the ROC analysis were 0.77 (SE 0.04, p &lt; 0.001) for age, 0.79 (SE 0.04, p &lt; 0.001) for co-morbidity and 0.67 (SE 0.05, p 0.003) for Barthel index.

Conclusions
Age, co-morbidity and prior fracture physical dependence are significantly associated with one-year survival of fragility hip fracture patients. This information can be used in early identification of patients who need special attention during the post-fracture follow up.
High differentiation in functional traits but similar phenotypic plasticity in populations of a soil specialist along a climatic gradient
Authors: Matesanz Silvia , Ramos-Muñoz Marina , Blanco-Sánchez Mario , Escudero Adrián 
Published: February 2020

AbstractBackground and AimsPlants experiencing contrasting environmental conditions may accommodate such heterogeneity by expressing phenotypic plasticity, evolving local adaptation or a combination of both. We investigated patterns of genetic differentiation and plasticity in response to drought in populations of the gypsum specialist Lepidium subulatum.MethodsWe created an outdoor common garden with rain exclusion structures using 60 maternal progenies from four distinct populations that substantially differ in climatic conditions. We characterized fitness, life history and functional plasticity in response to two contrasting treatments that realistically reflect soil moisture variation in gypsum habitats. We also assessed neutral genetic variation and population structure using microsatellite markers.Key ResultsIn response to water stress, plants from all populations flowered earlier, increased allocation to root tissues and advanced leaf senescence, consistent with a drought escape strategy. Remarkably, these probably adaptive responses were common to all populations, as shown by the lack of population × environment interaction for almost all functional traits. This generally common pattern of response was consistent with substantial neutral genetic variation and large differences in population trait means. However, such population-level trait variation was not related to climatic conditions at the sites of origin.ConclusionsOur results show that, rather than ecotypes specialized to local climatic conditions, these populations are composed of highly plastic, general-purpose genotypes in relation to climatic heterogeneity. The strikingly similar patterns of plasticity among populations, despite substantial site of origin differences in climate, suggest past selection on a common norm of reaction due to similarly high levels of variation within sites. It is thus likely that plasticity will have a prevalent role in the response of this soil specialist to further environmental change.
Who was the greatest of all-time? A historical analysis by a complex network of professional boxing
Authors: Tennant Adam G , Smith Chase M L , Chen C Jotam E 
Published: February 2020

Abstract
This study seeks to examine and compare boxers throughout history creating a pound-for-pound list of the different fighters. A PageRank algorithm was utilized to rank the boxers from the network to determine a list of the top 10 fighters from 1897 to 2019. Two data sets were utilized, a truncated subset and a larger data set, to explore the impact of network size on the rank of boxers. Additionally, the researchers systematically varied the damping factor of the PageRank algorithm to determine the effects on the rankings. A discussion of the results includes a comparison of journalistic rankings and those from a points-based system from the respected boxing website BoxRec.
Longitudinal Association Between Sodium and Potassium Intake and Physical Performance in Older Adults
Authors: Lana Alberto , Struijk Ellen A , Ortolá Rosario , Rodríguez-Artalejo Fernando , Lopez-Garcia Esther 
Published: February 2020

Abstract

Background
Aging is associated with a progressive difficulty to maintain ion regulation, which might impair the capacity for muscle contraction. Thus, the aim of this study was to examine the association between 5-year changes in dietary intake of sodium and potassium and changes in physical performance among older adults.

Methods
We performed a prospective study with 868 participants from the Seniors-ENRICA cohort. Diet was measured with a validated diet history and physical performance was measured with the Short Physical Performance Battery (SPPB), both in 2012 and 2017. Analyses were performed with linear regression models adjusted for sociodemographic variables, lifestyle, and morbidity, using changes in the intake of sodium and potassium and changes in the sodium/potassium ratio during follow-up as independent variables, and the continuous change in the SPPB score as the dependent variable.

Results
Over 5 years of follow-up, a 1 SD increase in sodium intake (ie, 0.73 g/d) was associated with a 0.13 (95% confidence interval [CI]: 0.26–0.01) points reduction in the SPPB score, while a 1 SD increase in potassium intake (ie, 0.70 g/d) was associated with a 0.19 (0.05–0.34) points increment in the score. In addition, a 1 SD increase in the sodium-to-potassium ratio (ie, 0.30) was associated with worse SPPB (−0.58 [−0.95 to −0.21]). Participants who adhered to dietary recommendations for minerals at baseline but became noncompliant during follow-up decreased their result in the SPPB.

Conclusion
An increase of dietary sodium intake, a decrease of potassium intake and the resulting increment in the sodium-to-potassium ratio were prospectively associated with worse physical performance in older adults.