bluuebunny/crossref_metadata_2025_split huggingface dataset:
The synthesis and characterization of rare-earth hydroxide as a processed result of monazite sand
Authors: Samin  , Setiawan Kurnia , Anggraini Mutia , Sunanti Susanna Tuning 
Published: February 2020

Abstract
The synthesis and characterization of rare-earth hydroxide as a processed result of monazite sand have been carried out. The synthesis and characterization of rare-earth hydroxide resulting from monazite sand processing are necessary to support the pilot plant activity of rare earth hydroxide produced in the Center of Nuclear Mines Technology BATAN. Rare-earth hydroxide is produced through several stages of the process, namely decomposition of monazite sand with NaOH at 140 °C, partial dissolution with HCl at 80 °C, uranium and thorium deposition, and rare-earth hydroxide deposition with NH4OH. The rare-earth precipitate was dried in an oven at 110 °C. The rare-earth hydroxide produced is characterized and certified. The rare-earth hydroxide powder is homogenized, then a homogeneous test, stabilization test, and characterization test are conducted. In the evaluation of data obtained the rare earth hydroxide that has been homogeneous, stable, contains the minerals of perovskite (La0.9Sr0.1CrO3), villiaumite (NaF), calcium aluminum silicate (CaAl2Si2O8), bredigite (Ca13.5B0.3Mg1.8Mn0.4Si9O32) and cesium sodium uranium chloride (CsNaUCL6). Certificate of parametric test results in rare-earth hydroxide from 10 laboratories accredited with statistical methods obtained 8 rare earth elements, ie Ce: (27.670 ± 3.004) %, La: (13.846 ± 1.503) %, Nd: (8.447 ± 0.816) %, Y: (1.667 ± 0.140) %, Pr: (6.254 ± 0.286) %, Sm: (1.496 ± 0.330) %, Gd: (0.994 ± 0.211) % and Dy: (0.172 ± 0.005) %. Compared with the rare earth hydroxide product of Myanmar, in the rare earth hydroxide the result from Indonesian monazite sand, Pr content higher, but for Ce, La, Nd contents is lower.
In-situ battery measurement of LiFePO4 cathode during charge mechanism using x-ray diffraction
Authors: Hutamaningtyas Evangelin , Sudaryanto  , Sugeng Bambang , Honggowiranto Wagiyo , Kartini Evvy 
Published: February 2020

Abstract
Lithium-ion batteries (LIB) as one of the essential rechargeable energy storage for supporting renewable technologies is currently a big issue. It is important to understand the mechanism of lithium-ion batteries in order to improve more durable batteries, long cyclable ability and better efficiency. This work aimed to use in-situ X-ray diffraction (XRD) as a powerful technique for acquiring a fundamental understanding of structure and phase transformations of lithium-ion battery during charge mechanism. The battery consists of LiFePO4 as cathode and graphite as anode material. The results show that some new Bragg peaks occur at 2θ of 39.97° and 47.26°. These indicate a phase transformation occurred from LiFePO4 to FePO4 during the charging mechanism. It can be concluded that in-situ XRD is a powerful tool to understand the phase transformation of lithium-ion batteries during the charging mechanism.
The current status of the internet reactor laboratory kartini research reactor for distance learning especially for higher education
Authors: Taxwim  , Hidayat U S , Susanto T H , Subchan M , Sugianto E , Anugerah A F , Aufani N , Baskoro Z , Satria R , Karsono W 
Published: February 2020

Abstract
The Kartini Reactor has been operating safely since March 1979 and has been used for research, education and training. Specifically for education and training, it has been utilized for online reactor physics practicum methods by utilizing the Kartini Reactor. This activity aims to enable students to learn and practice about nuclear reactors with distance learning methods, it adopts from the IAEA program under the name Internet based Reactor Laboratory (IRL). IRL is a physics reactor learning method using the internet that is used in distance learning with the reactor physics experiment guide (Protocol) which is already in regular practice (on site). IRL activities began in 2012 from the results of the reactor workshop at NCSU-America which has operated the IRL, then implemented at the Kartini reactor. IRL was first introduced at the International Youth Nuclear Summit in Jakarta in 2014 and introduced reactor operations to find out the dynamics of the operation of the Kartini reactor in collaboration with Adisutjipto College of Technology (STTA). Then continued collaboration between Center for Accelerator Science and Technology (PSTA) Yogyakarta, Center for Empowerment of Informatics and Nuclear Strategic Area (PPIKSN-BATAN) and Polytechnic Institute of Nuclear Technology (STTN-BATAN). Through the IAEA expert mission in 2017, the IRL system works properly, although limited in three protocols which are reactor operation, power calibration, and fuel temperature reactivity coefficient. The IRL program was last tested for distance learning for FMIPA-UGM students in 2019, it has shown a good performance and we agreed to continue the IRL program as one of the student practicum activities.
Determination of internal and external hazard index of natural radioactivity in well water samples
Authors: Purnama D.S , Damayanti T 
Published: February 2020

Abstract
Well water is an environmental component that is always used by people but is vulnerable to contaminated. The impact of the contamination of water bodies could cause danger to human health. Water pollution could be caused by radioactivity that exceeds recommended limits. Source of radionuclide pollutants in water bodies could be caused by the operation of nuclear facilities. Analysis of radioactivity has been carried out on several samples of well water near the TRIGA 2000 reactor facility, followed by calculating the internal and external hazard index of radiation dose. The results of the analysis using a gamma spectrometer show that the radionuclides contained in well water samples are not fission products, but they are Ra-226, Bi-214, Pb-214 and K-40 in the form of natural radionuclides. The highest radioactivity in the sample was 5.808 Bq/L from K-40 and the lowest was 0.103 Bq/L from Bi-214. The internal and external hazard index has been determined where the internal hazard index was 0.013-0.023 while the external hazard index was 0.006-0.012 which is below the maximum hazard index value based on UNSCEAR which is ⩽ 1. So, based on the results of this study on the radioactivity parameters show that well water is still safe to be used.
Determination of radioactivity discharge limit to the atmosphere on Bandung nuclear area
Authors: Chussetijowati J , Seno H 
Published: February 2020

Abstract
The determination of radioactivity discharge limits to the atmosphere on Bandung Nuclear Area has been carried out. The purpose is that these values can be used to control the discharge of radioactivity from the TRIGA 2000 reactor stack and the labeled compounds and radiometry laboratory stack in the Area to the atmosphere. The determination method is using PC-CREAM software, assuming the discharge of radioactivity from the stack to the atmosphere occurs under normal conditions and occurs only once. The source terms discussed are radionuclides I-131 and Cs-137, while several the other source terms that were not discussed also contribute to this determination. The initial discharge limits of radioactivity I-131 and Cs-137 from the reactor stack of 4.46E-03 Bq/h and 1.26E+05 Bq/h respectively, while I-131 from the laboratory stack of 2.23E-02 Bq/h. The dose constraint for community members at a distance of 1000 m from the Area is set at 0.15 mSv/y. The parameter needed is source term, reactor building volume, the air flow rate in the reactor stack, stack height, angle and distance between the two stacks, meteorology, topographic roughness, and radionuclide pathway to the community. The result of the calculation obtained the discharge limits of radioactivity for I-131 and Cs-137 from the reactor stack of 7.07E-05 Bq/h and 2.00E+03 Bq/h respectively; and I-131 from the laboratory stack of 3.53E-04 Bq/h.
Blood pressure monitoring system: real time-continuous and noninvasive-electronic, based on magnetic dipole moment of the proton spin of hydrogen atoms in the blood
Authors: Jati B M E , Utomo A B S , Maruto G , Utomo Y R 
Published: February 2020

Abstract
This research is motivated by the fact that blood pressure monitoring devices currently available cannot be integrated practically with other electronic health monitoring devices. The research is aimed to obtain a real time-continuous and noninvasive-electronic blood pressure monitoring system with a magnetic coil technique. This technique is a simplified form of the nuclear magnetic resonance (NMR) technique because the induced EMF that is obtained does not involve resonance but rather by sudden population changes and relaxation of the magnetic dipole moments of the proton spin of hydrogen atoms in the blood, both when systole and diastole. The benefit of this research output is that it can obtain noninvasive-electronic blood pressure monitoring devices, and the monitoring process does not interfere with blood flow in the branchial artery samples, so that the monitoring equipment can be integrated with other health monitoring equipment practically. The methodology of this research was carried out by placing a sample arm between two poles of a permanent magnet with a magnitude (7,300±200) gauss and his or her hand inside the receiver coil (involving 2,000 turns), after going through a 500 times voltage gain an induction EMF (in volts) was displayed on digital storage oscilloscope screen. This is done when the sample is relaxed (17 volts is obtained), shortly after jogging (26 volts), and the relaxed state a few moments later (12 volts). The result is that the induced EMF signal enlarges and widens shortly after jogging but slides back when the sample return to relaxed. It was concluded that this blood pressure monitoring equipment of the magnetic-coil technique could be used as a blood pressure monitor.
Radiation shielding design requirement in the proton energy measurement facility at DECY-13 cyclotron
Authors: Silakhuddin S , Suharni S , Wibowo K 
Published: February 2020

Abstract
The DECY-13 cyclotron is expected to produce a maximum energy of protons beam of 13 MeV. For testing the proton energy, a device for measuring photon energy using a stacked copper foil activation technique is currently being constructed. The activation caused the collision of a proton with copper foils and reactions of 63Cu(p,n)63Zn and 65Cu(p,n)65Zn have happened. These nuclear reactions produce neutron and gamma radiations; therefore, a study of radiation safety aspects is required to protect the hazard in the experiment of proton energy measurement. The study consists of designing for shielding construction based on radiation safety criteria and mainly determining the thickness of the shielding. The shielding material was portland cement concrete of K500 with a density of 2.3 gr/cm3. By setting a safe maximum dose rate of 50 mSv/year in the position of 350 cm from the neutron radiation source and the proton beam current was taken 1 μA, the required minimum thickness of concrete shielding was 110 cm.
Development of single sphere spectrometer with gold foil detector for neutron spectrometry
Authors: Rasito  , Bunawas  
Published: February 2020

Abstract
We developed a single sphere spectrometer (SSS) with a gold foil detector for neutron spectrometry. The detector of SSS is seven gold foil with 11 mm diameter and 0.18 mm thickness, which is placed in the polyethylene sphere of 30 cm diameter. The response of the detector was calculated for neutron in energy range 1×10−9 MeV up to 1 × 102 MeV using the Monte Carlo method by the MCNPX code system. The calculations were done based on the input of the SSS geometry model, source radiation, and fluence tally models. The validation of this SSS response was done with measure the neutron spectra from 252Cf standard source at the neutron calibration laboratory of the Center for Technology of Radiation Safety and Metrology, National Nuclear Energy Agency, and compared with Bonner Sphere Spectrometer (BSS) LiI(Eu). Based on this comparison, it was known that the SSS Au foils measurement differs from the BSS LiI(Eu) by about 1%.
Analysis of heat transfer at electron beam machine 300 kV/20 mA laboratory
Authors: Arifudin Latif , Saefurrochman  , Suprapto  , Sutadi  
Published: February 2020

Abstract
Experimental and theoretical analysis of heat transfer at Electron Beam Machine (EBM) Laboratory in Center for Accelerator Science and Technology, National Nuclear Energy Agency (BATAN) are required to understand the heat transfer phenomena. The BATAN’s EBM is a typical 300 kV/20 mA. The room where EBM is based has to be set up according to the laboratory standard to perform at an optimum level. This work aims to evaluate if the installed two air conditioners with a total cooling capacity 160,000 Btu/hr inside the laboratory are sufficient to reach a temperature of 20 °C and atmospheric relative humidity (RH) from 45% to 55%. The laboratory was stacked up with brick, tinted glass window, aluminum door, and rolling door with a total volume of 836 m3. The experiment was performed in cloudy weather for six days from 8:00 a.m. to 4:00 p.m. and the data of temperatures at each spot were taken every one hour. There were three conditions of this experiment, air conditioner running with laboratory lamps set to be off, air conditioner running with laboratory lamps set to be on, and air conditioner running with laboratory lamps set to be on and insulating 10.5 m2 rolling door with 50 mm Styrofoam respectively every two days. The result showed that for the first condition, the average temperature of laboratory and atmospheric relative humidity (RH) was 22.5 °C and 59%, respectively. In the second condition, the average temperature of laboratory and atmospheric relative humidity (RH) was 21.9 °C and 65% respectively, whereas, in the third condition, the average temperature of laboratory and atmospheric relative humidity (RH) were 19.9 °C and 49% respectively. This result indicates that adding thermal insulation such as Styrofoam inside the building helps the air conditioners to reach its targeted temperature and RH.
Determination of TRIGA 2000 reactor parameters for NAA absolute methods
Authors: Kurniawati S , Atmodjo DPD , Adventini N , Kusmartini I , Syahfitri WYN , Sari DK , Damastuti E , Lestiani DD , Santoso M 
Published: February 2020

Abstract
Neutron Activation Analysis (NAA) is a nuclear analytical technique for elemental analysis that has been widely applied in various fields such as environment, industry, health and food. It has high specificity and sensitivity for the analysis of elements with very low concentrations up to the picogram order. In Indonesia, NAA technique was developed in BATAN that has a research reactor as a neutron source. Relative method of NAA that uses the multi-elements standard as a comparison is widely used in Indonesia. At present, BATAN is developing an absolute method k0-NAA that has several advantages such as faster and more economics due to the reduction of multi-elements standard dependence. BATAN k0 Utility (BAkUL) beta version software has also been developed for data processing of the absolute methods. k0-NAA requires reactor parameters (α and f) as well as detector parameters for data analysis. The parameter f is the ratio of the thermal neutron flux to the epithermal whereas α is the epithermal spectrum deviation parameter from the 1/E distribution. The aim of this study is to measure parameters a and f using the triple bare monitor method by irradiating simultaneously Au and Zr without Cd cover. Measurement of reactor TRIGA 2000 parameters (α and f) were carried out at the irradiation positions CT1-1 and G17-2, and the results for α and f parameters at the CT1-1 irradiation position were -0,100 and 8.22 respectively, while at the G17-2 position was - 0.087 and 13.8. Each irradiation position has different α and f values so it is necessary to determine the reactor parameters for other irradiation positions. The measurement results α and f can be used for the next samples irradiation and as a database to support the application of the k0-NAA method in Center for Applied Nuclear Science and Technology (PSTNT) BATAN.
Determination of Marketing Strategies on Telecommunication Industry Using Analytic Hierarchy Process (AHP)
Authors: Fhilya C , Lesnussa YA , Ilwaru V Y I 
Published: February 2020

Abstract
The community’s need for telecommunications services is inseparable from everyday life. With the existing sophistication, the people of Ambon City want access to information that is diverse, easy, fast, and reliable. PT. Telkom Indonesia Tbk., Ambon is one of the state-owned companies engaged in telecommunications. To compete in the development of internet-based access and tehnology, PT. Telkom Indonesia Tbk., Ambon must make promotional programs that are attractive, informative, communicative, affordable, persuasive, and memorable. Using the Analytic Hierarchy Process method results in a presentation on the priority of promotional programs, namely, Promotion on Radio (17.9%), Festival (13.7%), Door To Door Marketing (12.9%), Open Table (12.7%), Website Promotion (11.2%), Advertise “add lips” on Radio (11.1%), Install Billboards (8.8%), Promotions with Banners (6.5%), and Advertisements in Newspapers (5.2 %).
Analysis of Tectonic Earthquake Characteristics in The Province of Nusa Tenggara Barat Indonesia and Its Surroundings
Authors: Wattimanela H J , Latupeirissa S J 
Published: February 2020

Abstract
The type of earthquake that is most often felt in Indonesia is tectonic earthquakes. This type of earthquake is caused by the movement of the earth’s crust due power generated by tectonic plate shifts. Province of Nusa Tenggara Barat is one of the earthquake prone areas in Indonesia. In this research, we will analysis of tectonic earthquakes characteristics in Province of Nusa Tenggara Barat by descriptive statistics concept approach and analysis type of data distribution earthquakes 2018. The Data used are tectonic earthquakes 2018 in Province of Nusa Tenggara Barat of Indonesia and sourced from the USGS earthquake catalog. The results of this study can be used as a reference for the Government of Indonesia and Province of Nusa Tenggara Barat in disaster mitigation planning in Province of Nusa Tenggara Barat.
Theoretical Analysis Properties of Gold Nanoparticles Resulted by Bioreduction Process
Authors: Roddu A K , Wahab A W , Ahmad A , Taba P , Sutapa I W 
Published: February 2020

Abstract
Analysis of the properties of gold nanoparticles produced through the bioreduction process using Abelmoschus esculentus leaves was carried out. The gold bioreduction process was carried out using Abelmoschus esculentus leaf extract mixed with stirring. Gold nanoparticles formed can be known from the color change of the yellow solution to the color purple. The gold nanoparticles produced were analyzed using XRD to determine the properties of the nanoparticles produced. The results of the analysis using XRD obtained four diffractograms as a characteristic of gold nanoparticles at an angle of 2θ: 37.82, 44.06, 64.42, and 77.53. Based on the calculation, the average size of the nanoparticles and the average size of the lattice length were 31.90 nm and 73.79 nm, respectively. The strain and stress values of gold nanoparticles produced were 4.8 × 10−5 and 12.57 MPa. In addition, the resulting crystal tends to have a crystal array with the Miller index (311). The energy density of gold nanoparticles is 3.35 KJ/m3.
Computational Study of Anthocyanin as Active Material in Dye-Sensitized Solar Cell
Authors: Maahury M F , Martoprawiro M A 
Published: February 2020

Abstract
Computational calculations for anthocyanin (anthocyanidin-3-monoglucoside) compounds were performed to get structure and electronic properties from the three of anthocyanin which has potential as active material in the dye-sensitized solar cell. The calculations use Density Functional Theory (DFT) with B3LYP functional and 6-31G(d) for ground state geometry optimization and Time Dependent-Density Functional Theory (TD-DFT) for excited states single point calculation. All the calculations were conducted in the gas phase. Geometry optimization calculations show that structures of anthocyanin compounds are not planar. Single point calculation for excited states shows absorption wavelength is shorter than experimental data, with a difference between 7.3% to 8.3%. The density of HOMO-LUMO is spread only on anthocyanidin part. The LUMO density of the three compounds is mostly in the anchoring group. In terms of excitation energy from the composition of excitation and distribution of HOMO-LUMO, cyanidin-3-monoglucoside shows better potency as active material in dye-sensitized solar cells.
Functional Properties and Chemical Composition of Dried Surimi Mackerel (Scomberomorus Sp) With Different Cryoprotectants and Drying Methods
Authors: Kolanus J P M 
Published: February 2020

Abstract
Dried surimi is a form of surimi that has undergone drying process will be added to food as a food additive. Dried surimi must have a high nutritional content and a good functional properties. This research aims to analyze the functional properties and chemical composition of dried surimi with different cryoprotectants and drying method. This research consisted of sample preparation; making of wet and dried surimi then characterizing. Data analysis was performed descriptively. To determine the difference in significance between each treatment data were analyzed using ANOVA. The results of the analysis showed that the value of protein solubility ranged from 38.38 to 52.26%; water absorption 1.00 to 1.93%; kamba density 0.40 to 0.66%; viscosity 2.57 to 69.83 cP; water content 6.01 to7.35% and protein content 85.35 to 85.57%. The results of ANOVA of dried surimi showed that the type of cryoprotectant has a very significant effect on protein solubility; drying method and cryoprotectant type have very significant effect on water absorption and water content and drying method has very significant effect on protein content. Dried Surimi is classified as fish protein concentrate type A, with yield ranges from 26.3 to 40.2%.