bluuebunny/crossref_metadata_2025 huggingface dataset:
The pragmatics of ‘light nouns’ in Besemah
Authors: McDonnell Bradley
Published: June 2020

Perhaps the most widely discussed aspect of the NP in western Austronesian languages is the relative clause, which is described in terms of its syntactic relation to the noun it modifies. It is expressed by a ‘relativizer’ and a so-called ‘gap’ in the modifying clause that is co-referential with the head noun. One western Austronesian language that appears to be quite different in this regard is Besemah, a little-described Malayic language of southwest Sumatra. This is because constructions analogous to relative clauses in Besemah are best described as Noun Modifying Constructions (NMC) following studies of similar phenomena in other languages, most notably Japanese. Like Japanese, Besemah NMCs most often occur with a so-called ‘light’ head noun, which has a general, abstract meaning, such as ‘thing’, ‘situation’, etc. This paper shows that NMCs headed by a closed class of light nouns serve a number interactional functions, including formulating reference to discourse entities that are recognizable to participants, elaborating upon discourse entities in increments, jointly working out the identity of a referent in other-initiations of repair, and constructing story beginnings with unattached light nouns among others. I argue that the semantically-bleached nature of light nouns and the ‘loose’ (pragmatically-determined) relationship between the light head noun and modifying elements allow speakers to construct NMCs that fit local contexts and serve various interactional purposes.
NP clustering in Mandarin conversational interaction
Authors: Tao Hongyin
Published: June 2020

Noun phrases (NPs) have traditionally been analyzed as a phrasal level unit with hierarchical internal structures as well as syntactic roles in larger syntactic units. In this chapter, I examine NP-related patterns at the discourse level. Using Mandarin conversation data, this chapter focuses on multiple NPs that cluster as adjacent turn constructional units. The patterns identified include: (1) deictic forms supported by gestures for mutual gaze and joint attention; (2) repeated (first person singular) pronouns for mitigation of conflicting stance and self-distancing; (3) diverse NP forms for step-wise reference identification or elaboration; (4) joint production of multiple NPs to display shared stance or mutual orientation; and (5) lists of multiple items for persuasion, exemplification, and clarification as well as for affiliative stance or mutual orientation. As these patterns go beyond the realm of clausal level syntax with demonstrable interactional effects, they are taken to show that there is discourse-level grammar, or grammar-in-interaction, to be accounted for when syntactic notions such as NPs are examined in context, and interactional discourse-based constructions, though non-conventional at times, raise important questions about the shape, formation, and dynamic nature of interaction and grammar.
Final /n/ Deletion in Ghayeni Persian: Opacity in Harmonic Serialism and Parallel Optimality Theory
Authors: Jam Bashir , Razmdideh Pariya , Naseri Zohreh Sadat
Published: June 2020

This paper explores the application and non-application of final /n/ deletion in Ghayeni Persian. In this dialect, final /n/ deletion is a productive phonological process whose application in different domains and environments is affected by several opaque counterbleeding and counterfeeding interactions as well as bleeding. This research presents new empirical data about these aspects which could be of general theoretical interest. It is also an attempt to make a contribution to current debate in phonological opacity. In so doing, it adopts Harmonic Serialism (HS) to accommodate counterbleeding opacity. It offers an analysis to survive a pitfall challenging HS in handling counterbleeding opacity in derived words. With regard to counterfeeding opacity, it adopts Parallel Optimality Theory (POT) using Local Constraint Conjunction (LCC). It discusses how POT and HS in particular could treat opaque interactions in Ghayeni dialect. In addition, this paper argues that a candidate which undergoes the same process twice in the same step could also be included in HS’s gradualness condition.
Solution to the Fokker–Planck Equation with Piecewise-Constant Drift*
Authors: Cheng Bin , Chen Ya-Ming , Deng Xiao-Gang
Published: June 2020

We study the solution to the Fokker–Planck equation with piecewise-constant drift, taking the case with two jumps in the drift as an example. The solution in Laplace space can be expressed in closed analytic form, and its inverse can be obtained conveniently using some numerical inversion methods. The results obtained by numerical inversion can be regarded as exact solutions, enabling us to demonstrate the validity of some numerical methods for solving the Fokker–Planck equation. In particular, we use the solved problem as a benchmark example for demonstrating the fifth-order convergence rate of the finite difference scheme proposed previously [Chen Y and Deng X Phys. Rev. E 100 (2019) 053303].
Tuning of Magnetic Properties of α-RuCl3 Single Crystal by Cr Doping*
Authors: Yuan Yu-Jie , Li Cheng-He , Tian Shang-Jie , Lei He-Chang , Zhang Xiao
Published: June 2020

We study the influence of Cr doping on magnetic properties of α-RuCl
3
single crystals in detail. With increasing Cr content, the c-axial lattice parameter increases gradually, implying that the Cr doping may weaken the interlayer interactions. The magnetism of Ru
1 – x

CrxCl
3
single crystals evolves from a long-range AFM order to a possible spin-glass state with Cr doping. The appearance of a possible spin-glass state can be explained by the introduction of FM interaction by Cr
3+
ions, which competes with the AFM interaction between Ru
3+
ions. Moreover, the larger magnetic moment of Cr
3+
ion with S = 3/2 than Ru
3+
ion with J
eff = 1/2 also results in a monotonic increase of the effective moment of Ru
1 – x

CrxCl
3
single crystal.
Magnetic skyrmion annihilation by quantum mechanical tunneling
Authors: Vlasov Sergei M , Bessarab Pavel F , Lobanov Igor S , Potkina Mariia N , Uzdin Valery M , Jónsson Hannes
Published: June 2020

Magnetic skyrmions are nano-scale magnetic states that could be used in various spintronics devices. A central issue is the mechanism and rate of various possible annihilation processes and the lifetime of metastable skyrmions. While most studies have focused on classical over-the-barrier mechanism for annihilation, it is also possible that quantum mechanical tunneling through the energy barrier takes place. Calculations of the lifetime of magnetic skyrmions in a two-dimensional lattice are presented and the rate of tunneling compared with the classical annihilation rate. A remarkably strong variation in the onset temperature for tunneling and the lifetime of the skyrmion is found as a function of the values of parameters in the extended Heisenberg Hamiltonian, i.e. the out-of-plane anisotropy, Dzyaloshinskii–Moriya interaction and applied magnetic field. Materials parameters and conditions are identified where the onset of tunneling could be observed on a laboratory time scale. In particular, it is predicted that skyrmion tunneling could be observed in the PdFe/Ir(111) system when an external magnetic field on the order of 6T is applied.
Investigation on plasma structure evolution and discharge characteristics of a single-stage planar-pulsed-inductive accelerator under ambient fill condition*
Authors: Li Xiao-Kang , Che Bi-Xuan , Cheng Mou-Sen , Guo Da-Wei , Wang Mo-Ge , Yang Yun-Tian
Published: June 2020

The physical process of a single-stage planar-pulsed-inductive accelerator is investigated. Measurements include the waveforms of circuit current, capacitor voltage, plasma radiation intensity, and temporal plasma structure photos captured by a high-speed camera. Experiments are conducted under static ambient fill condition using argon as propellant. Varied values of capacitor voltage and gas pressure are compared. Further discussions quantify the EM interaction between circuit and plasma, as well as their energy deposition and current sheet acceleration. Based on the results of experiments, physical mechanisms of the initial ionization phase and the following acceleration phase are analyzed theoretically.
Medical image processing using python and open cv
Authors: Widodo C E , Adi K , Gernowo R
Published: June 2020

This paper presents the implementation of the Python programming language and the Open CV library in medical image processing. Medical images play an important role in identifying diseases and detecting whether organs are functioning properly. Image processing related to medical images is an active research field where various techniques are used to facilitate diagnosis and various image processing techniques can be used. In this study, image processing was performed including image preprocessing, histogram equalization, smoothening, erosion, and dilation. The use of python was chosen because this programming language is open source with a lot of available resources. The open CV library is also available free of charge and provides tons of image processing functions. The software can also be installed in a small Raspberry Pi computer and low electrical power usage making it very suitable as an efficient resource of the medical image processing system.
Interaction between madden-julian oscillation and monsoon related to big floods over south sulawesi in january 2019
Authors: Hermawan E , Harjana T , Ridho A , Maulana T
Published: June 2020

Study of interaction between MJO and Monsoon and their impact on the extreme rainfall over the Maritime Continent (MC) until now not yet fully understood due to the limitation of data observation. However, there many techniques to derive the extreme rainfall from the satellite data, especially for GSMap (Global Satellite Mapping of Precipitation) that already designed with good spatial-temporal resolution. In this study, we have investigated the interaction between MJO and Asian Monsoon when they are interactive simultaneously. By taking the Makasar city as a sample of big floods over South Sulawesi dated January 22, 2019, we found a good agreement between MJO, Monsoon, and their impact on the extreme rainfall in that time. We applied four techniques, namely; temporal, spatial, Hovmoller, and PSD (Power Spectral Density), respectively. Then, we found the MJO in phases 4 and 5 were responsible for the occurring of big rainfall over South Sulawesi. For this reason, we suspect the development of the MJO index model, especially for phases 4 and 5 when passing over South Sulawesi is very important for the next investigation.
Merapi observed gravity anomaly changes in 2019
Authors: Rina D I , Irham M N
Published: June 2020

Volcano disasters are one of the natural disasters that often occur in Indonesia, one of which is Merapi. The impact of the periodic eruption of Mount Merapi is a major threat to the safety of the population periodically. The large eruption cycle of Merapi Volcano occurred in 1587, 1672, 1768, 1822, 1849, 1872, 1930, 1961 and 2010. The results of the 1988,1998 and 2011 studies showed the increasing number of magmas which can be observed from the dimensions of the magma chamber. The structure changes are predicted from phreatic eruptions in 2013, 2014 and 2016, whereas in 2018 and 2019 occurrence of pyroclastic flow. The research of gravity changes used observed gravity anomaly in 2019 as the first step of time-lapse Merapi activity analysis. The number of observation points was 100 with reference to the same position in 2011. The results of observed gravity anomaly changes are increasing mass in the summit area and decreasing mass in the southeast, west and the north of research areas on the elevation of 500 m to 1400 m.
The contribution of fatty acids composition of soybean oil on natural and electro-optics polarization
Authors: Rahmawati A , Firdausi K S , Sugito H , Azzam M , Richardina V , Susanto Q M B
Published: June 2020

A study of light polarization as a new alternative test of cooking oil quality today provides an advantage in biophysics and other fields. In this research, we determined the relation between polarization and fatty acids composition of soybean oil. The light source was a green pointer laser with λ = 532 nm, and the electro-optics polarization was produced through high DC voltage 0-9 kV across the sample. The results show that natural polarization and electro-optics polarization give different physical meanings in relation to oil fatty acid composition. The natural polarization informed that the increasing polarization was caused by increasing poly-unsaturated acids and saturated acids in asymmetric triglyceride molecules. It was accompanied by the decreasing polarization due to the increasing monounsaturated in symmetric triglyceride molecules. While the electro-optics polarization described that all fatty acids contribute to the increasing polarization due to increased induced dipole from all acids.
Horizontal gradient analysis of gravity data for subsurface fluid flow identification (case study: cilincing, north jakarta)
Authors: Hertiansa R P , Rosid M S
Published: June 2020

Jakarta is a large city with a 10.37 million population. Most of the clean water needs are provided via groundwater. This might be a problem for some areas with groundwater conditions such as brine, or even salty water. The salt-water issue in Jakarta is not uncommon. Many researchers have conducted their studies on this topic from many perspectives. They are all divided into 2 main general conclusions, saltwater happens because of intrusion and saltwater is there because it is connate water. This study aims to give a new perspective on understanding the salt-water issue. Methods used for this study are gravity measurement to get a horizontal gradient value. The other is groundwater well sampling to measure the value of pH, salinity, conductivity, and water table elevation. These methods will be comprehensively interpreted to get the direction of subsurface fluid flow. Results from salinity and conductivity of groundwater show more salinity and conductivity in the North direction and less on the South one. Gravity data and the geological map also suggest that there is a fluid flow coming from North East to South West. All of these methods used in this study have come to one conclusion, there is water flowing from the sea to the land, therefore there is a most likely saltwater intrusion on the region where this study is conducted.
Relationship between environmental knowledge understanding towards conservation attitudes of Earth Hour Semarang volunteers
Authors: Ripa’i M , Purwanto A P
Published: June 2020

Humans and the environment are an inseparable part. Increasing of human activities and their negative characters cause environmental damage and pollution accelerate. The purpose of this study is to determine the relationship of understanding environmental knowledge towards conservation attitudes of Earth Hour Semarang volunteers. This research is a quantitative study using a descriptive correlation research design with cross sectional approach. The population in this study was 22 active volunteers from earth hour Semarang and observed using valid questionnaires. Sampling used non-probability sampling techniques with saturated sampling (census). From the research conducted, it was found that there was a significant relationship between the understanding of environmental knowledge towards conservation attitudes of Earth Hour Semarang volunteers with p value = 0.019 (α <0.05) and had a relationship strength of 0.497 or in the category of strong relationships.
Characterization of the radiosensitization effect of pulsed laser ablated-gadolinium
Authors: Paramita S A , Nurhasanah I , Khumaeni A , Arifin Z
Published: June 2020

Nanomedicine is a field of medical treatment research that has developed rapidly in recent years for the diagnosis and treatment of cancer. New strategies in nanomedicine are to improve cancer diagnosis and therapy at the cellular and molecular level. Materials that are often used for nanomedicine are metal-based gadolinium. This research presents a preliminary study of the radiosensitization properties of gadolinium nanoparticles colloid. Gadolinium nanoparticle colloid was synthesized using a pulsed laser ablation method in pure water. The gadolinium nanoparticle colloid was characterized using a Scanning Electron Microscope and UV-Vis Spectrophotometer. Radiosensitization properties of gadolinium nanoparticles colloid were examined based on the decomposition of x-ray irradiated methylene blue. The results show that gadolinium nanoparticle colloid consists of a spherical shape particle and has a bandgap energy of 5.76 eV. Gadolinium nanoparticle colloid possessed radiosensitization properties with a dose enhancement factor in the range of 1.51-1.54.
Low-temperature process for green tea drying using zeolite adsorption integrated fluidized bed dryer
Authors: Handayani S U , Paramita V , Yulianto M E , Siswanto A P
Published: June 2020

This work studied the optimization of low-temperature drying by using a laboratory scale and applied it on the pilot plant scale of fluidized bed dryer integrated with zeolite adsorption. The drying time was observed regarding the airflow rate, temperature and zeolite-tea leave ratio. The green tea leaves moisture content was specified gravimetrically until constant weight can be obtained. Applying 70°C as the drying temperature, the green tea leave is secure for a faster drying rate and can be avoided from the catechin epimerization and thermal degradation. Applying 0.40 m/s as airflow rate can remove the water surface faster than 0.50 m/s of airflow rate, although it needs a longer time to drag out the inner moisture content of the solid. The pilot-plant scale required longer time (40 minutes) on the first falling rate period than laboratory scale (30 minutes), although it gave faster second falling rate period at the same airflow rate (0.50 m/s), temperature (70° C) and zeolite-tea leave ratio (25:75).
Growth of collagen-nanosilver (Co-AgNP) biocomposite film with electrospinning method for wound healing applications
Authors: Subagio A , Umiati N A K , Gunawan V
Published: June 2020

Silver nanoparticles (AgNP) are classified as metal-based nanoparticles and have received considerable attention among researchers in the application of wound healing, due to their physicochemical and biological properties. In this research silver nanoparticles (AgNP) will be combined with collagen to collagen-nanosilver (Co-AgNP) grown by electrospinning method into nanofiber film. The optimum parameter of the electrospinning process using an electric voltage of 25 kV at a spray distance of 20 cm becomes based on the process growth of Co-AgNP film. By using PVA as an electrospun polymer, the collagen-nanosilver composite (Co-AgNP) can be grown into a film that can be used as a wound dressing.
3D modeling of subsurface jiwo fault around gantiwarno sub-district, klaten district, central java using the magnetic method
Authors: Yulianto T , Irham M N , Sasongko D P , Widada S
Published: June 2020

The Yogyakarta and Klaten earthquake on May 27, 2006, which caused around 5700 people to become victims (from the district of Klaten in 2000 and around 5000 from the Special Region of Yogyakarta). Some earth experts believe that the earthquake was caused by the activities of the Opak Fault in Yogyakarta and the Jiwo Fault in Klaten. That is because the biggest victims are indeed located around the two fault lines. This study aims to map the existence of the Jiwo Fault in Gantiwarno District and surrounding Klaten Regency by magnetic methods. The study area was conducted at an estimated location as the Jiwo Fault with an area of about 20 km x 20 km. Data collecting of total earth magnetic field data in this study using the Proton Precession Magnetometer, while the coordinates of the data collection point are measured with GPS Garmin III Plus. In this study, 150 points were successfully measured. Total magnetic field data is then corrected daily variations and IGRF corrections. The corrected magnetic field data was an inversion of 3D modeling using oasis montaj software. Based on the modeling of the total magnetic field data and the results of the geological survey it was concluded that the dominant geological structure is the fault trending southwest-northeast to west-east, which is interpreted as the Jiwo Fault. Based on the results of 3D modeling using oasis montaj software that began to be seen at a depth of 500 m, it began to be seen clearly at a depth of 1000 m to a depth of 3400 m below sea level is still clearly visible.
Pictures on the second homotopy module of the group from Kronecker product on the representation quaternion group
Authors: Zakiya A M , Yanita Y , Arnawa I M
Published: June 2020

This paper discusses pictures on the second homotopy module of the group from the Kronecker product on the representation quaternion group. It needs three notions to construct the second homotopy module, which is the presentation of the group, word, and spherical picture. In this paper, it has used the presence of a group that is obtained from the group Kronecker product on the representation of the quaternion group. This presentation has four generators and five relations. Based on this presentation, we got word, and then a picture can be drawn. It uses van Kampen Lemma to construct the picture and operation on picture to obtain a spherical picture. It has presented pictures with one and all of the generators in the presentation of the group. It has used relations in the presentation of a group to make the picture become a spherical picture. We conclude that the spherical picture, which becomes generators built all pictures.
The first fundamental group of Kronecker quaternion group
Authors: Adrianda A , Yanita Y
Published: June 2020

This paper discusses the first fundamental group from the identity graph of the group derived from the Kronecker product of the group quaternion representation. This group is called the Kronecker quaternion group. The purpose of this paper is to show the elements of the first fundamental group of the Kronecker quaternion group. A graph is needed to determine the first fundamental group. In this case, an identity graph is used; that is, graphs obtained from the Kronecker quaternion group. From this identity graph, it’s computed how many directed graphs can be made. The elements of the first fundamental group are the equivalence classes of paths in the directed identity graph that begin and end by a particular vertex. It is shown that the number of equivalence classes of paths for any fundamental group obtained from the identity graph is one plus the number of a completed graph K
3 in the identity graph of the Kronecker quaternion group.
Village classification index prediction using geographically weighted panel regression
Authors: Ningrum A S , Rusgiyono A , Prahutama A
Published: June 2020

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

In 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

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.
Smart sensor based distillation for fractionating citronella oil: current research challenges
Authors: Wahyudi D , Noor E , Setyaningsih D , Djatna T , Irmansyah
Published: June 2020

Citronella oil is one of the essential oils derived from the leaves and stem of lemongrass (Cymbopogon nardus). At present, most of the lemongrass oil industry in Indonesia is still in the form of upstream industries which only provide crude purified oils with low purity for export with a fairly low sales value. Technology in improving the purity of citronella oil needs innovation in following the development of the industrial revolution 4.0. This article presents an overview of the research opportunities in the development of distillation for fractionating citronella oil referring to automation of optimization processes in the vacuum fractional distillation accompanied by inspection of the quality of essential oil isolation run in the line process based on smart sensors integrated in a computer program. The combination technique of quality control of essential oils in line process system combined with the optimization technique of the vacuum fractional distillation process has not been studied by advanced researchers. Therefore, this study has a state of the art process engineering and smart sensor-based quality control systems that can be developed for strengthening the Indonesian citronella oil industry.