bluuebunny/crossref_metadata_2025_split huggingface dataset:
Uneven Coating Influences on Electrical Impedance of Quartz Crystal Microbalance
Authors: Sakti S P , Kamasi D D. , Nuha S A , Setiana M 
Published: January 2020

Abstract
High shear modulus coating material does not provide loading effect to the Quartz Crystal Microbalance sensor. The condition is met when the coating material was glassy and the layer was homogeneous. Polystyrene is considered as a glassy coating material when used on 10MHz Quartz Crystal Microbalance. Homogeneous and compact polystyrene coatings that are glassy can be obtained using the spin coating method. The film’s rigid condition is shown by the sensor impedance value at the series resonance frequency after coating. However, using ultrasonic spray coatings, it was known that polystyrene films are formed not as homogeneous as when coated using spin coatings. We observed that Quartz Crystal Microbalance was damped by the polystyrene film when the coating film was not evenly distributed over the sensor surface, especially on the sensor surface above the electrode. The minimum impedance of the QCM sensor increased significantly. The unevenness of the coating causes the damping effect on the QCM sensor. The minimum sensor impedance before coating was less than 15 Ohms. When the polystyrene layer was uneven, we found that the impedance increased by more than 25 Ohms. The results showed that the distribution of polymer layers on the sensor surface is one of the important factors that must be considered to avoid the effect of damping on the sensor. The measurement results showed that the sensor has a negative mass effect.
Design of E-nose as an Instrument Identification of Diseases Through the Respiratory Tract
Authors: Yakob Muhammad , Mustika Dona , Ida Ratna Nila , Rachmad Almi Putra 
Published: January 2020

Abstract
The identification of a particular illness is usually done by microscopic check-up from the phlegm, urine, blood, Rontgen, and CT-scan. This technique needs a long period, high cost, and complicated procedure. As a result, society feels reluctant to check up on their health. Thus, research of an instrument that can define and diagnose the illness easily, efficiently, and accurately is needed. This research developed a prototype of an electronic nose that consists of a gas sensor that can respond quickly the element of volatile organic through the breathing air. Principal component analysis (PCA) method is the most appropriate method to classify the type of illness visually. Therefore, this research is needed to be applied in medical instrumentation.
Measurement and Evaluation of Sound Intensity at The Medan Railway Station Using a Sound Level Meter
Authors: Indrayani  , Asfiati Sri , Riky Milza Ndruru , Rajagukguk Juniastel 
Published: January 2020

Abstract
Trains are means of transportation that are used by people to avoid traffic congestion. However, train stations are also most frequently exposed to noise. This is due to the sound intensity of the operational activities in the location. Passengers and station officers are environmental components exposed to noise. In this study, the value of sound intensity level at the railway station of Medan city is measured using Sound Level Meter. This measurement was carried out for six days. The highest sound intensity level for the train departures is 96,67 dB and for the train arrival is 96,66 dB. Meanwhile, the lowest sound intensity level of train departures is 81,41 dB and the arrival of trains is 83,75 dB. It was found that the high level of sound intensity is sourced from the friction of the wheels with the rail surface, notification speakers and train horns. The results of this study can be used to find the most appropriate solution to reduce the noise level in the railway station area.
A Proposal of Dynamic Scales for Measuring the Mass of Agricultural Products
Authors: Djamal Mitra , Satria Eko 
Published: January 2020

Abstract
The rapid development of agricultural products industry in Indonesia presents a new challenge for the industry. The high demand for agricultural products makes the industry must think to manage the plantations more effectively and efficiently. One of the problems in plantations is the process and procedure of weighing agricultural products. At this time the process of weighing agricultural products takes a long time and a long procedure. In the industry, processes and procedures for weighing agricultural products as they are today being considered inefficient. Direct weighting at the time of collection is assessed to be rapid and highly beneficial to the industry. But there is a problem when weighing is done directly. If weighing is done directly at the time of collection, then the weighing is done under dynamic conditions. To be able to solve the problems in weighing the agricultural products then proposed a study to build a dynamic weighing system that can weigh dynamically where direct weighing agricultural products can be done at the time of collection. The force transducer will measure the force applied by the weighing system and the load in the form of industrial products. Because the system works in a dynamic state, the forces acting on the force transducer can be calculated using Newton’s second law

m

k

=

(

F

a

)

−

m

t

where a is the deformation acceleration of the force transducer which is proportional to the acceleration of the weighing system, mt
is the mass of the weighted system supported by the force transducer and mk
is the mass of the product being weighed. The deformation acceleration of this force transducer is measured using a flat coil.
The Dy2O3 Effect Study on Spectroscopy and Optical Properties of PbiNaGd Glass for Optical Amplification
Authors: Situmorang R , Rahmaniar  , Panggabean D D. , Sarumaha C. , Kaewkhao J , Sunaryono  , Rajagukguk J 
Published: January 2020

Abstract
The medium glass was made from chemical compounds with the compositions (70-x) P2O5 - 10Bi2O3 - 10Na2O - 10Gd2O3 - xDy2O3 (where x = 0; 0.05; 0.1; 0, 5; 1.0; 3.0 (mol%)) which was doped by active ion xDy2O3. All of proposed chemical compounds are in the form of powder with the mass of 20 grams of mixture in an alumina crucible and prepared by melt-quenching method. The glass has been obtained with a size (3x10x10) mm3 and smoothed to get a flat surface and high transparency. Optical properties of glass samples Dy:PBiNaGd determined by measuring by absorption spectrum and spectrophotometer at area visible with different concentration. Analysis indicates eleven inhomogeneous displacement bands at various positions and intensities with hypersensitive transitions at 1274 nm (6H15/2→6F11/2). Emission spectrum in medium glass Dy:PBiNaGd is supported using excitation wavelength (λeks) 350 nm and indicated that the highest intensity is in Dy:PBiNaGd4 where there four transition band emisions are namely 4H9/2 → 6H13/2 (483 nm), 4H9/2 → 6H11/2 nm), 4H9/2 → 6H9/2 (661 nm) and 4H9/2 → 6H6/2 (750 nm).
Improved natural gas storage with adsorbed natural gas technology (ANG) using activated carbon from pineapple crown
Authors: Yuliusman  , Nasruddin  , Naf’an H I , Sinto J , Nugroho Y W , Nafisah A R , Sipangkar S P 
Published: January 2020

Abstract
Natural gas considered as alternative fuel that still has the enough availability in Indonesia. One of the utilizations of natural gas is ANG technology which based on adsorption principle. The adsorption of natural gas occurs in isotherms condition at 27 °C, 31 °C, and 35 °C and using low pressure up to 9 bar. Activated carbon were used from bio-based carbon from pineapple crown with IOD number 1337 mg/g and surface area 1190.799 m2/g which compared to commercial activated carbon with iod number 1727 mg/g. Bio-based carbon were prepared through chemical and physical activation. This study begins with making preparation for the ANG (Adsorbed Natural Gas) technology will be used, degassing process, measuring the void volume, storage capacity, and delivery capacity. The maximum storage of pineapple crown activated carbon reached 0.0397 kg/kg at 9 bars 27°C with desorption efficiency of 43.82% and commercial activated carbon reached 0.0429 kg/kg at 9 bar and 27°C and desorption efficiency of 43.82%.
A review: microbiology perspective of zika virus
Authors: Airlangga G W , Rama Wisesa I B G 
Published: January 2020

Abstract
The aim of review is to increase a quality of information about zika virus in microbiology perspective. Zika virus is an emerging-mosquio borne that was founded in Uganda 1947. Zika virus was transmitted to human in 1954 in Nigeria and first human infection in Asia were reported in Indonesia, Central Java in 1977. WHO was declared that zika virus was a global health emergency in 2016. Zika virus is flavivirus that was brought by mosquito (Aedes aegypti and Aedes albopictus). Zika virus had a several fatal effect like microencephaly and Guillain-Barre syndrome. Recently there is no medicine or vaccine for zika virus. Early diagnostic will help HCP (Health Care Professional) to provide early treatment for human infected. There was several rapid diagnotic for zika virus like ZnO nanostructure and paper disc.
Preventive effect of kefir in BALB-c (Mus musculus) induced by ovalbumin towards relative amount of B cell-Ig-E
Authors: Qosimah Dahliatul , Murwani Sri , Amri Indah Amalia , Prasetyo Dodik , Rifai Muhaimin , Kusuma Indra Darpa , Purba Olfivesen , Pranoto Yurisa Noviaji , Rahmadiani Fakhira , Sanjoyo Ayu Mahanisa 
Published: January 2020

Abstract
Food allergy or hypersensitivity is defined as “all reactions that are triggered by immune cells after food intake, including hypersensitivity type 1 reactions, mediated by IgE produced by Plasma B cells. Ig E will bind to mast cells causing degranulation and release of inflammatory products resulting in tissue damage. This study aims to determine the preventive effects of Kefir on Balb-C Mice (Mus Musculus) induced by ovalbumin on the relative number of B-Ig-E cells. The research method is a true experimental laboratory control post design only consisting of 5 treatments and 4 replications, consisting of negative control (healthy): placebo Nacl Physiological, positive control (ovalbumin at a dose of 20 μg/mice and adjuvant Al (OH)3 1000 μg on days 8 and 15 and re-induced orally with a dose of 60 mg/mice and 10 mg/mice Al (OH) 3 on the 29th day), T1, T2, T3 (kefir for 14 days with doses of 300, 600 and 900 mg / kg body weight and ovalbumin. Data on the relative amount of B+ cell-Ig E are quantitative then analyzed using the One-Way ANOVA test with a 95% confidence level to find out the differences between treatments significantly. The results showed that administration of kefir and ovalbumin to the relative number of B+ cells were not significantly different between the treatment groups while the decrease in the relative amount of IgE+ occurred in the T1 group. The conclusion shows that administration of kefir can decrease B+ cell-Ig E+ in ovalbumin-induced mice.
The preventive effect of Rome beauty (Malus sylvestris Mill) apple peel’s extract towards the malondialdehyde (MDA) levels of rat (Rattus norvegicus) stomach exposed to plumbum acetate
Authors: Ghassana D A , Marhendra A P W , Haskito A E P 
Published: January 2020

Abstract
Plumbum (Pb) is one of heavy metals that can turn into free radicals, resulting in the descent and alteration of cell structures of the stomach. Apple of Rome beauty contains high flavonoids which act as antioxidant agents by supplying hydrogen ions to the free radicals. This research utilized white rat (Rattus norvegicus) divided into 5 treatment groups, each group consisted of 4 white rats. They are negative control, positive control which were given 10 mg of Pb acetate for each rat/day in 14 days, and preventive control group which were given the extract of Rome Beauty apple peel within the dosage of 28 mg/200 g, 56 mg/200 g, and 112 mg/200 g for 21 days. The parameter observed were MDA levels of stomach. The result was then analysed with One Way ANOVA which was followed by Turkey. The result of this research exhibited the preventive group which was given Rome Beauty apple peel within the dosage of 112 mg/200 g was able to halt the increase of MDA levels significantly (p<0.05), which was 82.16 ± 1.40 μg/ml. The research concluded that Rome Beauty apple peel contain antioxidant that can prevent the damage of stomach tissue resulted by Pb acetate.
Mobile Application Development for Tourist Guide in Pekanbaru City
Authors: Nugraha N B , Alimudin E 
Published: January 2020

Abstract
Pekanbaru City is a place that has a huge tourism potential. Pekanbaru is very strong with the Malay culture that is proven that Pekanbaru has many Malay style tourism buildings. The culture of Pekanbaru city has different attraction for tourists. Various information about tourism developments, supporting facilities, tourism objects, visitor information about the locals is important information to know. However, many unknown places are worth a visit but people do not know about their existence, because of the lack of public information. The purpose of this research is to design an application on an Android smartphone for Tour Guide Pekanbaru. The system will use GPS to find the user point and can provide information about tourist attractions, hotels, restaurants and shopping so that they can use the time in Pekanbaru effectively. The recommendation would be to use the neighboring K-nearby algorithm (KNN) to determine the closest place. The result of this tour guide is the user can detail information about tourist attractions, hotels, places to eat and shopping centers in the city of Pekanbaru as desired by the user. Tourist attraction information and directions with minimal GPS accuracy error 10 meters distance and maximum error 40 meters. The speed of the application in determining the user position depends on strong network signal and the condition of the surroundings
Mental Analysis Workload on Solar Street Lighting Workers
Authors: Prabaswari Atyanti Dyah , Utomo Bagus Wahyu , Tauhida Dina 
Published: January 2020

Abstract
The workload for each scope of work has different responsibilities. The workers will face working hours, loads, remember many patterns, and frustration when doing a special task. Solar street lighting (PJU TS) installation project is affected by various risks. NASA TLX as a tool to measure the workloads. The analysis not only using NASA TLX but also using statistical testing. The Mental Demand (MD) has score 325 (the highest score) due to considerable mental activity. The Performance (P) has a score close to zero that categorized quite well. Regression and correlation analysis between mental demand and duration of work show the direction of positive relationships. More experienced makes more MD scores. That is because every PJU installation project has different criteria. The solution is bookkeeping and mind mapping regarding the type of PJU TS. Each PJU TS has the book as a guide in the field.
Web-based Encyclopedia of Nature Tourism, Religion, and Culinary in Kudus City
Authors: Listyorini Tri , Meimaharani Rizkysari 
Published: January 2020

Abstract
Kudus City is one of the cities in Central Java Province. Tourism potential in the city of Kudus is very large. Besides being known as the City of Kretek, Kudus also has religious, natural and culinary tourism which is well-known in Java. Kudus is famous with the religious tourism for the existence of Sunan Kudus and Sunan Muria’s graves. Kudus also has beautiful nature, along with the development of a very interesting time. Nature and religious tourism, Kudus specialties are well known in Indonesia. Therefore, this research produces a forum that contains information and locations for natural, religious and culinary tourism in the Kudus city. From this encyclopedia, people can search for the destination and it is equipped with a map as the closest distance guide because in this application it is connected to Google Maps API.
Web Utilization and Telegram Gateway Features for Management of Booking Make Up Services at Ulfisinta Make Up
Authors: Choiyanti Fita , Latifah Noor , Triyanto Wiwit Agus 
Published: January 2020

Abstract
Advances in information technology that is increasingly developing now has been used as a very important means to produce the information needed. WWW technology or the web as one type of service that is connected with the internet. One of the uses that require the application of web-based information technology is service in make up services. In Ulfisinta Make Up in its management, the recording of consumer data is still done manually or handwritten notes, causing misunderstanding between admins because the notes are sometimes unclear. Lack of management of consumer data if there is a booking in a period of time that is still long. The amount of proof of payment or transfer that must be stored so that it takes a long time if the data is needed again. This study aims to build an Application Management Information System for Make Up Services on Ulfisinta Make Up Web-Based with Telegram Gateway Feature which is expected to be used in the future for booking management and also a means of information to consumers to get information faster.
Flexural properties of the epoxy resin filled with single and hybrid carbon nanofillers
Authors: Glaskova-Kuzmina T , Aniskevich A , Zotti A , Borriello A , Zarrelli M 
Published: January 2020

Abstract
The aim of this paper was to estimate the effect of moisture and temperature on the flexural properties of the epoxy filled with single and hybrid carbon nanofillers (CNTs and CNFs) and to reveal the most environmentally stable NC. Water absorption at 70 °C until equilibrium moisture content and heating at 70 °C for 4 weeks were followed by freezing at -20 °C for 8 weeks. Microstructural characterization of optical images revealed homogeneous dispersion of all carbon nanofillers in the epoxy resin at microscale. Positive nanofiller effects were found for sorption, flexural and thermophysical characteristics of the epoxy resin. The most environmentally stable NC was epoxy filled with 0.1 wt. % of CNTs/CNFs hybrid, which had the lowest effect of temperature and moisture on mechanical characteristics, along with the lowest equilibrium water content and diffusivity.
Effect of annealing on the static properties of Ti-20Nb-10Ta alloy
Authors: Konushkin S V , Sergiyenko K V , Sevost’yanov M A , Nasakina E O , Sudarchikova M A , Tsareva A M , Baikin A S , Kaplan M A , Shatova L A , Kolmakov A G 
Published: January 2020

Abstract
The effect of heat treatment on the static mechanical properties of a Ti-20Nb-10Ta shape memory alloy in the form of thin wire is studied. After annealing at 600 °C for 20 minutes, a low modulus of elasticity was obtained. The best strength and ductility indicators were obtained after annealing at a temperature of 800 °C during 60 minutes.
Development of copper dispersion-strengthened composite material with increased indexes of high-temperature strength and wear resistance for thermally loaded friction pairs
Authors: Vladimirova Y O , Shalunov E P 
Published: January 2020

Abstract
The article presents the chemical composition, technology and general properties of copper dispersion-strengthened composite material developed by the authors based on Cu-AlC-O system with increased indexes of high-temperature strength and wear resistance for parts of thermally loaded friction units and, first of all, for valve guides of highly forced internal combustion engines and plungers of die-casting machines. This material containing 0.9 wt % aluminum, 0.3 wt % carbon has recrystallization temperature of 1000 oC and has higher tribotechnical properties comparing with standard materials. In particular, the wear out intensity of the developed material is 2.9 lower comparing to gray cast iron Gh 1051, which is used for valve guides. At the same time, wear of coupled element is also became 2.8 times less. The technology of new material is based on the method of reactionary mechanical alloying in the attritor, which provided the material with dispersion-strengthened subgrain structure with γ -Al2O3 reinforcing nanodisperse particles.
Experimental studying of the crack resistance for the CuAl9Mn2 alloy during growing of samples by the method of laser powder surfacing
Authors: Makarova N V , Dudko O V , Mantsybora A A , Yatsko D S 
Published: January 2020

Abstract
The paper presents the results of experimental studies of crack resistance at the fusion boundary of the base material and the built-up layer in cylindrical specimens made of CuAl9Mn2 alloy using additive technology of powder laser surfacing. The aim of the study is to analyze possible changes in the mechanical properties of the base material at the fusion boundary under the action of high temperatures. On the basis of the experimental data it is obtained that the thermal action during laser powder surfacing has not a great impact on the crack resistance of both the base material and the built-up metal.
On the analysis of energy dissipation and ratcheting during cyclic deformation of the titanium alloy VT6 (Ti-6Al-4V)
Authors: Zakharchenko K V , Kapustin V I , Shutov A V 
Published: January 2020

Abstract
The paper is focused on the analysis of deterioration of strength properties during cyclic deformation of the titanium alloy VT6, which is widely used in numerous engineering applications. A set of experimental data is obtained, regarding stress-controlled cyclic loadings with variable R-values; the influence of the mean stress on the irreversible processes is estimated. The impact of a previous loading history on ratcheting and dissipation-induced heating is clarified. The use of the obtained experimental data for creation and calibration of constitutive models is discussed.
Stochastic simulation of the micro-meso transition in the evolution process of defective structure in loaded high-strength material
Authors: Nasonov A N , Baranov V P 
Published: January 2020

Abstract
Based on synergetic principles and statistical approach, mathematical modeling of the micro-meso transition in microdefects accumulation process in loaded high-strength material has been performed. The stochastic model of submicrocracks system evolution in the material at micro level has been constructed. The computational experiment has been performed for the case of uniaxial plastic deformation of structural steel 30HGSA. Calculated submicrocracks density curves for different degree of the system non-additivity, characterizing the material structure ordering degree, have been presented and analyzed.
Quality assurance of sheets rolling on the basis of modeling the destruction process, plastic restructuring the structure of the material of the slab and the acoustic emissions parameters
Authors: Nosov V V , Shipachev A M , Palaev A G , Grigorev E V 
Published: January 2020

Abstract
The problems of modeling the fracture process under conditions of plastic restructuring of the material structure, the transformation of the strength state of the material of plastically deformable workpieces into the state of the product material, the acoustic emission assessment, which determines the defectiveness of the final product of the predisposition of the workpiece defects to development during the rolling process, are considered.
Analysis of the effect of equal-channel angular pressing on the strength and electrical conductivity of low-alloyed alloys of the Cu-Cr-Zr system
Authors: Chembarisova R G , Sarkeeva E A , Alexandrov I V , Wei Wei 
Published: January 2020

Abstract
The effect of equal-channel angular pressing (ECAP) on the strength and electrical conductivity of low-alloyed Cu-Cr-Zr alloys to identify conditions for the formation of states with high strength and electrical conductivity is considered. The increase in the content of alloying elements does not increase the strength of the alloys in the initial quenched state. After ECAP, their strength is increased by dislocations. It is shown that after ECAP of quenched samples, their specific resistances remain almost unchanged due to the increase in the length of the grain boundaries, the volume fraction of small particles of secondary phases and the segregation of alloying atoms from the matrix.