bluuebunny/crossref_metadata_2025_split huggingface dataset:
Village classification index prediction using geographically weighted panel regression
Authors: Ningrum A S , Rusgiyono A , Prahutama A 
Published: June 2020

Abstract
Village classification index is a certain status of the achievements of village development activities. In measuring the achievement of village classification index, it needs to be made in several time periods and must concern to the spatial effects because the geographical conditions of each village are diverse. It is necessary to study the variables that affect the village classification index in several time periods. Statistical methods that used in overcome the spatial effects of panel data type is Geographically Weighted Panel Regression (GWPR), which is a combination of Geographically Weighted Regression (GWR) models and panel data regression. This study focused on the establishment of GWPR model with fixed effects using fixed bisquare kernel on the village classification index in Batang Regency, 2015-2018. The results of this study indicate that the fixed effect model GWPR differ significantly on panel data regression model, and the model generated for each location will be different from one another. In addition, all independent variables namely the community economy, security and order, and community participation in development have a significant effect on the village classification index for all villages with R-square value of 0.3952.
Efficiency nonminimally supported design for three parameters weighted exponential model
Authors: Widiharih T , Mukid M A , Mustafid  
Published: June 2020

Abstract
The weighted exponential distribution function has a specific curve shape, the curve from zero reaches to the maximum point then down, and at a certain time it is relatively constant tends to zero. This function can be used to describe the growth curve model. Minimally supported design is a design with the number of supported design equal to the number of parameters in the model. Locally D-optimal design for the weighted exponential model is minimally supported design with uniform weight. The standardized variance of D-optimal design is less than or equal to the number of parameters and maximized the standardized variance at the supported designs. We propose an alternative design by adding one supported design. Nonminimally supported design is obtained from supported design of D-optimal design plus one supported design in three ways, by adding one of them, by adding the average of them or by adding one supported design around them. We compare nonminimally supported designs in terms of efficiency, standardized variance, and propose a design that is efficient and practically convenient for practitioners.
Weakly compact linear operators on space of Dunford integral function
Authors: Solikhin S , Hariyanto S , Sumanto Y D , Aziz A 
Published: June 2020

Abstract
This study discussed the integral of Dunford and compact linear operator on space of Dunford integral function. For each f which is Dunford integral on [a,b] is defined as an operator DL
by DL
(x
*) = x
*
f, for each x
* ∈ X
* This study resulted that the operator DL
is both a continuous linear operator and weakly compact operators. Then, it was defined as the adjoint of the operator

D

L

*

by

D

L

*

(
h
)
(

x

*

)
=

∫

a

b

h

D

L

(

x

*

)

each h ∈ (L
1)* The adjoint operator

D

L

*

is continuous and weakly compact linear operators.
Globally stability analysis of the mathematical model in the IMTA system by using the energy-Casimir method
Authors: Triyana E , Widowati  , Putro S P 
Published: June 2020

Abstract
Despite its benefits, fish farming has a potential impact on the water environment, such as algae bloom, fish death, and eutrophication. Integrated Multi-Trophic Aquaculture (IMTA) is designed to address environmental problems to reduce the excess of unfed pellets and fish feces under the cage. Mathematical modeling was built to describe a phenomenon in chemical, physical, and biological processes during the operation of IMTA to form a mathematical formula. The phenomenon was explained by the dynamic system, which is a method to describe, model, simulate and analyze dynamical systems. The model analyzed the interactions between nitrogen and phosphate concentrations and phytoplankton during the operation of IMTA. The model was a non-linear system of linear differential equations with three variables. Analysis of global stability is carried out at equilibrium points based on the Lyapunov stability theory using by Energy-Casimir method. Determine equilibrium point and Casimir functions of the dynamical systems, then assume that the Casimir functions are linearly independent. Find the value of the G matrix, then calculate the Lyapunov function with a positive definite value and test the validity of the Lyapunov function.
Characterization of citronella grass essential oil of Cymbopogon winterianus from Batang region, Indonesia
Authors: Kusumaningrum H P , Zainuri M , Endrawati H , Purbajanti E D 
Published: June 2020

Abstract
The needs of herbal medicine tend to increase because of their little side effect and complications. Citronella oil has been under an attention due to progressive need for new biochemical effects to establish a novel production from this essential oil. The chemical properties of essential oil of Citronella grass from Batang Indonesia, distilled from leaves and shoots of Cymbopogon winterianus were found to be within the specifications set by Indonesia National Standart for Essential Oil. The result of GC-MS analysis showed 30 component with the major components of essential oil: Isopulegol, Tricyclo[5.2.1.0(1,5)]decane, LINALOOL L, Butanoic acid, Citronellyl acetate, Geranyl acetate, and Elemol. Comparison with commercial citronella oil showed different concentrations in the essential oil of Citronella grass from Batang Indonesia. Essential oil of Citronella grass from Batang Indonesia was also showed antimicrobial and dermatophic activity according to PASS analysis.
Preparation and characterization of lignin nanoparticles from rice straw after biosynthesis using Lactobacillus bulgaricus
Authors: Rismawati R , Nurdin I A , Pradiptha M N , Maulidiyah A , Mubarakati N J 
Published: June 2020

Abstract
Lignin is the most abundant aromatic natural polymer and comprises about 25% of straw biomass. Nanolignin biosynthetic production method is a simple method and safely better than chemical or physical methods. It has an interest in using lignin in more advanced applications. In particular, lignin-based nanoparticles could find potential application use in functional surface coatings, nano glue, drug delivery, microfluidic devices, and food additive. This study aimed to optimize Lactobacillus bulgaricus in nano lignin synthesis, the effect of the incubation period and freeze-drying on the quality of the nanolignin. Lignin particles were biosynthesized using rice straw and Lactobacillus bulgaricus in a dark place with a temperature of 37°C for 24 hours, 48 hours, and 72 hours. Lignin nanoparticle was characterized using Fourier Transformer Infrared Spectroscopy (FTIR), Particle Size Analyzer (PSA), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX). Theresults indicated that nano lignin has a spherical and amorphous shape. The average size of particles is 101.6 nm with an incubation period of 24 hours, 57.2 nm with an incubation period of 48 hours, and 276.9 nm with an incubation period of 72 hours. The incubation periods affect the size and shape of nanolignin and also show that the lignin chemical structure is within the nanoparticle formation process. Samples using freeze-drying enable have natural antibacterial compounds and have phenolic fragments containing recommended for nano preservatives.
The test anti-inflammatory activity of infusing Bryophyllum pinnatum (Kalanchoe pinnata) leaves (Kalanchoe pinnata) on edema in mice leg thigh male swiss webster
Authors: Sudirman M S , Monica  
Published: June 2020

Abstract
Research to know the effect of anti-inflammatory of infuse bryophyllum pinnatum (Kalanchoe pinnata) against edema on leg thigh Swiss Webster male mice and to see relationships increased concentrations with increased anti-inflammatory effect. This research was conducted in the Science Laboratory, Faculty of Fisheries, Agriculture, and Biology of the Bangka Belitung University. The method: The animals test that used were 25 Swiss Webster male mice were divided into 5 groups, namely group I: negative control (aquadest), group II: positive control (aspirin), group III, IV, V given infuse bryophyllum pinnatum (Kalanchoe pinnata) with concentrations 20%, 40%, and 80%. This research uses a method by injecting acetic acid in mice thigh. The measured data is a murine thigh volume for 3 hours using a caliper. Data analysis using the Kruskal-Wallis, the results showed that there were no significant differences as a value greater than 0.05 is 0.533. This suggests that increasing the concentration did not give a considerable influence on the volume of edema thigh male mice Swiss Webster. From the Mann Whitney test between the concentration of 20%, 40%, 80%, and negative controls showed that the difference in significance because of the value of significantly less than 0,05. This shows that there is a potential infusion of leaves bryophyllum pinnatum (Kalanchoe pinnata) towards healing leg edema in the thigh swiss webster male mice.
Gold imprinted adsorption based on eugenol
Authors: Djunaidi M C 
Published: June 2020

Abstract
Synthesis of Ionic Imprinted Polymer (IIP)-Au have been carried out using polyeugenoxy acetate (PA) as the base polymer. IIP is formed through the transfer of a basic polymer with a metal template which is then crosslinked with ethylene glycol dimethacrylate (EGDMA) and the release of the metal template using acid. Non Imprinted Polymers are also synthesized for use as a comparison. Polymerization of up to IIP and NIP was carried out using infrared spectrophotometers and SEM-EDX. IIP and NIP are used to determine the rate and capacity of adsorption through kinetics and adsorption isotherms studies. Adsorption selectivity tests were carried out on a mixed metal solution system Au(III)/Cd(II), Au(III)/Pb(II), and Au(III)/Fe(III). The amount of adsorbed metal ions is calculated based on the remaining metal ions in the solution measured using atomic absorption spectroscopy. The results of the adsorption of Au(III) metal ions in IIP and NIP followed the second-order pseudo and isotherm followed Langmuir. adsorption capacity in IIP-PA is (28,305 mg/g), and NIP-PA adsorption capacity is (45,080 mg/g). IIP adsorption selectivity is greater than NIP in binary solutions in the order of Au(III)/Cd (II)> Au(III)/Pb(II)> Au(III)/Fe(III).
Preliminary study of auto catalytic palm oil hydrolysis into fatty acid through hydrothermalysis process
Authors: Yulianto M E , Amalia R , Paramita V , Nisa Q A K 
Published: June 2020

Abstract
This research aims to carry out the production of fatty acids through hydrothermal autocatalytic hydrolysis of palm oil. The production of commercial fatty acids is the hydrolysis of crude palm oil which is carried out using the Colgate-Emery process. This process is considered to be less efficient because the hydrolysis time is quite long, the conversion is relatively low and the product purification load is more complex in the presence of an acid catalyst. Hydrothermal autocatalytic hydrolysis is a liquid phase reaction which is maintained at a temperature of 100-374°C under certain pressure or referred to as subcritical water Research on the forming of fatty acids through autocatalytic hydrolysis of palm oil in a hydrothermal reactor was investigated experimentally. The research variables varied were temperature and reaction time. To conclude, as the reactor temperature increases and the hydrothermal reaction time is longer, the number of acids obtained increases, meaning that the fatty acids produced through the autocatalytic reaction get bigger.
Removal of Pb2+ metal ion using electrolysis system of Fe(s)/NaCl(aq), Pb(NO3)2(aq)//H2O(aq)/C(s)
Authors: Suyati L , Efendi D , Gunawan G , Haris A , Widodo D S 
Published: June 2020

Abstract
Lead2+ is very dangerous heavy metal for the environment due to its toxicity and it requires a serious handling. A more efficient and effective method for handling is electrolysis using electrocoagulation. This method provides an electric current to the system, a redox reaction occurs followed by a coogulation process, which then absorbs Pb2 + metal ions to form flocculants. the study covered electrocoagulation of artificial waste containing Pb2+, characterization of functional groups and compounds contained in flocculants. The two compartment reactor was used. It consisted of an anode (iron) and cathode (graphite) parts separated by a salt bridge. The anode was filled with 0.1M NaCl electrolyte solution, artificial waste of Pb(NO3)2. The cathode contained H2O. Potential was set in the range of 1-6 V. Then the filtrate at the anode was analyzed by AAS and the precipitate was characterized by FTIR and SEM EDX. The results showed Pb metal waste was removed 43.2% by electrocoagulation method at a maximum voltage of 6 V. FITR result shows Fe-O in the wave numbers of 1117 and 111.99 cm−1 and Pb-O in the wave numbers of 482.22 and 474.82 cm−1. SEM analysis shows that the morphology has slightly changes. Elements contained by EDX analysis of the floc are iron, lead, oxygen, silica and sodium.
Designing computer-assisted problem-based learning (CAPBL) environment for performance analysis of isolation forest algorithm
Authors: Hastuti R D , Waspada I , Wirawan P W , Bahtiar N 
Published: June 2020

Abstract
Anomaly detection is important applied in various fields of application to determine errors in the system. By detecting it can minimize losses on the system. Anomaly detection can be done using several algorithms. One such algorithm is the Isolation Forest algorithm. Isolation Forest Algorithm is an efficient and effective algorithm in detecting anomalies. Isolation Forest has better performance than other algorithms in terms of execution time, especially in large datasets. Although the Isolation Forest algorithm has many advantages, there are still very few tools that provide this algorithm. One tool that provides the Isolation Forest algorithm is Scikit Learn. However, using special tools such as Scikit Learning requires sufficient time and experience to be able to manage the features of the tool. Thus, in this study the authors developed a web-based application that is used to assist users in assisting and improving the performance of Isolation Forests by using sample data sets, setting the parameters of Isolation Forests, visualization, and evaluation. This application was developed using the waterfall process model and CAPBL concept. In determining the features of the application, an analysis of features is based on the CAPBL concept with the business process of CRISP-DM. The software testing result shows that this application is fit to be used as a new solution to facilitate users who want to learn and analyze the performance of Isolation Forest.
Portable machine with android application display for measuring CO and HC of vehicle exhaust gas
Authors: Supriyono H , Anton S , Fadlilah U , Harismah K 
Published: June 2020

Abstract
Two main pollutant components produced by vehicle exhaust gas are hydrocarbon (HC) and monoxide carbon (CO). At the car service center, these two gasses are measured using a commercial instrument called as automotive emission analyzer (AEA). However, this instrument is not practicable for personal daily used. Problems that would be discussed in this publication involving how to design and build a simple and portable instrument for measuring HC and CO gasses. The objective of the published research is to measure HC and CO gasses and then displayed them in the Android-based smartphone. In the designing and building step, MQ-2 and MQ-7 sensors were used to detect HC and CO gasses respectively. The produced data of MQ-2 and MQ-7 sensors were processed and calculated using Arduino and then the results were sent to be displayed in the Android-based smartphone. The result showed that MQ-2, MQ-7 with Arduino was successfully implemented for building portable HC and CO measuring instruments. When compared to commercial AEA, the measurement resulted from the developed instrument has an average error of 2 ppm for HC and 0.0075% for CO.
Effectiveness of Psidium guajava to increase hemoglobin and hematocrit levels of third trimester in pregnancy
Authors: Chunaeni S , Lusiana A , Martanti L E 
Published: June 2020

Abstract
A decrease in one or more parameters of red blood cells: hemoglobin concentrate, hematocrit or the total amount of red blood cells is called anemia. Coverage of iron supplements programme in Indonesia has not reached the goals, so additional supplements are needed to increase hemoglobin and hematocrit levels. Test results showed that on 100 mg red Psidium guajava contained vitamin C as much as 12,3 mg and 79,9 mg on white Psidium guajava. This study used quasi experiment, pre and posttest design. Hemoglobin and Hematocrit levels were analyzed using a photometer automated hematology analyzer, with research carried out for 7 days. The results showed an increase in Hemoglobin levels in respondents given red Psidium guajava at 0,3 gr/dl and in respondents given white Psidium guajava at 0,6 gr/dl. Hematocrit levels in respondents given red Psidium guava decreased by 0,35% and 0,25% in respondents given white Psidium guava. Wilcoxon test shows there is an increase in Hemoglobin levels but there is no effect on Hemotocrit levels with responden given red and white Psidium guajava. By using Mann Whitney test, p value of 0,303 was obtained, which means there was no differences in respondents given red and white Psidium guajava. Clinical conclusion is white Psidium guajava is better on improving the value of hemoglobin levels and helps the absorption of iron in pregnant women’s third trimester.
Combination of flood models with weather research and forecast based on extreme rainfall for hazard mitigations
Authors: Gernowo R , Widodo C E , Yatunnisa A A , Kurrotaa’yun H 
Published: June 2020

Abstract
Semarang city in central java Indonesia has a strategic location as the capital of Central Java Province and developed into the fifth largest metropolitan city in Indonesia. The city of Semarang, which is traversed by the north coast route (pantura) is often flooded during the rainy season. This is because the intensity of rainfall is high and some areas in the city of Semarang are rob areas so that when there is a tide of sea water this area will be flooded. The combination of the Flood model and the weather prediction model will illustrate future conditions. The results showed that the prediction of flood distribution based on rainfall for a period of 10 years. With the flood model the period pattern of rainfall intensity values obtained is processed into a relationship graph between the duration of rain in minutes with the intensity of rain in the return period of 2 years, 5 years, 10 years and 25 years. The rainfall intensity value obtained will then be used to determine the peak discharge value
Hybrid devices for quantum nanophotonics
Authors: Pierini S , D’Amato M , Joos M , Glorieux Q , Giacobino E , Lhuillier E , Couteau C , Bramati A 
Published: June 2020

Abstract
Photons have been identified early on as a very good candidate for quantum technologies applications, as carriers of quantum information, either by polarization encoding, time encoding or spatial encoding. Quantum cryptography, quantum communications, quantum networks and quantum computing are some of the applications targeted by the so called quantum photonics. Nevertheless, it was also clear at an early stage that bulk optics for handling quantum states of light would not be the best option for these technologies. More recently, single photons, entangled photons and quantum light in general have been coupled to integrated approaches coming from classical optics in order to meet the requirements of scalability, reliability and efficiency for quantum technologies. In this article, we describe our recent advances using elongated optical nano-fibers. We also present our latest results on nanocrystals made of perovskites and discuss some of their quantum properties. Finally, we will discuss the general steps necessary in order to couple these nanoemitters efficiently with our photonic platform, based on taperd optical nanofibers.
Monitoring peppermint washout in the breath metabolome by secondary electrospray ionization-high resolution mass spectrometry
Authors: Lan Jiayi , Gisler Amanda , Bruderer Tobias , Sinues Pablo , Zenobi Renato 
Published: June 2020

AbstractIn this study, a secondary electrospray ionization-high resolution mass spectrometer (SESI-HRMS) system was employed to profile the real-time exhaled metabolome of ten subjects who had ingested a peppermint oil capsule. In total, six time points were sampled during the experiment. Using an untargeted way of profiling breath metabolome, 2333m/zunique metabolite features were determined in positive mode, and 1322 in negative mode. To benchmark the performance of the SESI-HRMS setup, several additional checks were done, including determination of the technical variation, the biological variation of one subject within three days, the variation within a time point, and the variation across all samples, taking allm/zfeatures into account. Reproducibility was good, with the median technical variation being ∼ 18% and the median variation within biological replicates being ∼ 34%. Both variations were lower than the variation across individuals. Washout profiles of compounds from the peppermint oil, including menthone, limonene, pulegone, menthol and menthofuran were determined in all subjects. Metabolites of the peppermint oil were also determined in breath, for example, cis/trans-carveol, perillic acid and menthol glucuronide. Butyric acid was found to be the major metabolite that reduce the uptake rate of limonene. Pathways related to limonene metabolism were examined, and meaningful pathways were identified from breath metabolomics data acquired by SESI using an untargeted analysis.
Effect of temperature on water vapor sorption on commercial desiccant and rice husk-CaCl2 composite desiccant
Authors: Puri A A , Warsiki E , Rahayuningsih M 
Published: June 2020

Abstract
Many efforts have been made to control the moisture in the package by the addition of the active ingredients which absorb this moisture. In the modern retail, moisture or water vapor absorber, known as desiccant has been widely used to extend the shelf life of the food product. Composite desiccants comprising the high active ingredient has been developed to improve the performance of single absorber material in absorbing and controlling moisture in the food package. The purpose of this research was to observe the effect of temperature storage in moisture sorption of commercial desiccants (silica gel and active clay) comparing to the composite desiccant of rice husk-CaCl2. This research proved that the sorption ability of these desiccants were different, and it was influenced by the temperature of the storage. The results showed that rice husk-CaCl2 composite dessicant possessed the highest absorption capacity especially at temperature of 40 °C with value of 1.2342 g H2O/g desiccant for 7 days of storage. The increase of temperature has been resulted on increasing absorption rate (k), for example, rice husk-CaCl2 composite dessicant, the k value was 0.2587 g H2O/g desiccant/day at 30 °C, 0.7828 g H2O/g desiccant/day at 40 °C and 0.9562 g H2O/g desiccant/day at 50 °C. It looks that the moisture absorption followed pseudo second order for all treatment with R2 at 99% for almost all treatments.