bluuebunny/crossref_metadata_2025_split huggingface dataset:
Prior Thromboembolic Disease and Assisted Reproductive Therapy
Authors: Jacobsen Anne Flem , Sandset Per Morten 
Published: July 2021

AbstractAssisted reproductive therapy (ART) increases the risk of venous thrombosis (VT) by 2- to 4-fold, whereas pregnancy increases the risk by 5- to 10-fold. Women with a history of VT undergoing ART are often suggested thromboprophylaxis. The literature is scarce and international guidelines are lacking. We made a review of the literature and base our suggestions primarily on expert opinions. We suggest women with a prior VT to use low-molecular-weight heparin as thromboprophylaxis starting from ovarian stimulation, throughout pregnancy, and 6 weeks postpartum. Assessment of VT risk should be done prior to ART. Adjustment of treatment to minimize the thrombotic risk, such as preventing ovarian hyperstimulation syndrome, single-embryo transfer, cryopreservation, and transfer of frozen embryos instead of fresh embryo in high-risk women, is suggested. Women with previous arterial thrombosis should continue aspirin during ART treatment, pregnancy, and postpartum.
Emotion regulation of social exclusion: a cross-cultural study
Authors: He Zhenhong , Muhlert Nils , Elliott Rebecca 
Published: July 2021

AbstractSocial exclusion is harmful to basic human needs. Emotion regulation represents a potential coping strategy. As culture can influence how people react and regulate their emotions, this study examined whether emotional reaction and regulation in response to social exclusion differ between individualistic and collectivistic cultures. A total of 80 college students, half White (n = 40, recruited in Manchester, UK) and half East Asian (n = 40, recruited in Shenzhen, China) viewed social exclusion pictures expressed by same-race or other-race characters. Both groups of participants viewed these pictures under no-reappraisal (passive viewing) and reappraisal (reinterpretation) conditions. Participants rated their vicarious negative emotional experience after each picture presentation. Results showed that both White and East Asian participants expressed greater negative emotion and showed stronger emotion regulation effects when facing own-race social exclusion, i.e., the “own-race bias”. In addition, White participants were more capable of regulating the negative emotions elicited by social exclusion compared to East Asian participants. Findings highlight the importance of considering the role of culture in emotional reaction to and emotion regulation of social exclusion, which may help the development of appropriate interventions across diverse populations.
Predictions of COVID-19 Spread by Using Supervised Data Mining Techniques
Authors: Awadh Wid Akeel , Alasady Ali Salah , Mustafa Hadeel Ismail 
Published: July 2021

Abstract
In the wake of the outbreak of the new coronavirus, the countries in the world have fought to combat the spread of infection and imposed preventive measures to compel the population to social distancing, which led to a global crisis. Important strategies must be studied and identified to prevent and control the spread of coronavirus COVID-19 disease 2019. In this paper, the effect of preventive strategies on COVID-19 spread was studied, a model based on supervised data mining algorithms was presented and the best algorithm was suggested on the basis of accuracy. In this model, three classifiers (Naive Bayes, Multilayer Perceptron and J48) depended on the questionnaires filled out by Basra City respondents. The questionnaires consisted of 25 questions that covered fields most related to and that affect the prevention of COVID-19 spread, including demographic, psychological, health management, cognitive, awareness and preventive factors. A total of 1017 respondents were collected. This model was developed using Weka 3.8 tool. Results showed that quarantine played an important role in controlling the spread of the disease. By comparing the accuracy of the algorithms used, the best algorithm was found to be J48.
Analysis of shoreline changes using the bilko method on landsat imagery in Karawang regency (1999-2019)
Authors: Arum Y P 
Published: July 2021

Abstract
Karawang Regency is one of the districts in Indonesia which has the longest coastal area, with a length of 76.42 km and an area of around 1,168.85 km2 of coast. The dominant process that occurs on the coast of Karawang Regency is abrasion and the coastline retreating between 50-300 meters in a direction. The purpose of this study was to determine the extent of shoreline changes that occurred in Karawang Regency using multi-time Landsat imagery with a tidal approach. The result Changes in the shoreline were more dynamic during the period 1999 - 2009 with an abrasion area of 8611954m2 and an accretion of 5471645m2. This is because during that period, there were two different types of tides, where in 1999 there was a mixed-semidiurnal (Double Leaning), while in 2009 the tide was mixed-diurnal (Leaning Tunggal). Then for the period 2009 - 2019, there was the same type of tide, namely the mixed-diurnal type tide (Leaning Tunggal), which caused the detected coastline to experience slight changes. Each segment experienced different line changes in each study period due to variations in slope, land cover, and river estuary morphology.
Synthesized and characterization nanosized synthesis Fe3O4powder from natural iron sand
Authors: Syahida A N , Sutanto H , Alkian I , Irianti F D D , Wibowo A A , Priyono P 
Published: July 2021

Abstract
This study aims to synthesize Fe3O4 nanoparticles from natural iron sand as a starting material. The synthesis process was carried out by the coprecipitation method at a synthesis stirring rate of 270 rpm. Fe3O4 nanoparticle samples’ characterization process was carried out using scanning electron microscopy - energy dispersive X-ray (SEM-EDX), which produced a particle size of 10.76nm, and the Fe content of the sample was 60.96%. Characterization using X-ray diffraction resulted in a crystal size of 12.49 nm and a magnetite phase (Fe3O4) content of 48%. XRD characterization also showed the presence of another phase peak of NH4Cl. NH4Cl contaminants can be degraded by repeated washing using distilled water. This study proves that this synthesis can degrade other elements in natural iron sand to produce Fe3O4 nanoparticles.
Characterization structure of Fe3O4@PEG-4000 nanoparticles synthesized by co-precipitation method
Authors: Irianti F D D , Sutanto H , Priyono P , Wibowo A A , Syahida A N , Alkian I 
Published: July 2021

Abstract
Magnetic nanoparticles (Fe3O4) from natural iron sand with PEG-4000 have been successfully synthesized by the co-precipitation method. Natural iron sand was from Kulon Progo beach. Extraction of natural iron sand was separated with a magnet permanent as a precursor. The result of extraction was dissolved by acid chloride (HCl) solution. Precipitation process has been finished after added ammonium hydroxide (NH4OH) solution and added polyethylene glycol (PEG)-4000. This solution was dried until it formed a black precipitate. Magnetic nanoparticles were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray (EDX), and Fourier Transform Infra-Red (FTIR). The quantitative and qualitative analyzes on XRD were using the Profex 4.2.0 application and Joint Committee Powder on Diffraction Standards (JCPDS) No. 19-0629, respectively. Fe3O4 nanoparticles were successfully formed as indicated by the bonding of Fe-O. The results obtained in this study were the crystalline size of 11-13 nm with lattice parameters of 8.3758 Å for Fe3O4 and 8.3589 Å for Fe3O4 added with PEG. Fe nanoparticles were more dominant with wt% above 65%, which was confirmed by the EDX results. The addition of PEG mass resulted in the smaller crystallite size of the nanoparticles.
The effect of 6 hours stirring time on natural iron sand base on magnetics Fe3O4 nanoparticle by sonification
Authors: Wibowo A A , Sutanto H , Priyono P , Syahida A N , Irianti F D D , Alkian I 
Published: July 2021

Abstract
In this research, ferrite magnetic nanoparticles (Fe3O4) from natural iron sand have been synthesized by co-precipitation technique with varying stirring time and sonification process. The purpose of this study was to determine the effect of 6 hours of synthesized magnetic nanoparticles (MNPs) on the resulting crystal size. The different structures and properties of the synthesized Fe3O4 nanoparticles were investigated using X-Ray Diffraction (XRD), Scanning electron microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and Energy Dispersion X-ray (EDX), respectively. XRD and SEM produced mean crystal sizes over the range of 13.93 nm and particle sizes of 14.8 nm. The EDX test explained that the Fe3O4 compound was successfully formed at 6.00 KeV. FTIR showed the element content of Fe-O at 555 cm-1. This study’s results indicate the MNPs synthesis process at 6 hours and the sonification process can produce Fe3O4 nanoparticles with a minimum size at the optimal time compared to synthesis at 8 hours, 7 hours, and 5 hours.
Online monitoring of water pollution level based on dissolved oxygen (DO) and biochemical oxygen demand (BOD) using wireless sensor system
Authors: Sugiharto W H , Ghozali M I , Suryono S , Susanto H , Budihardjo M A 
Published: July 2021

Abstract
In the case of water pollution, including the sea, rivers, lakes, and reservoirs, usually when measuring the parameter of Dissolved Oxygen (DO) and Biochemical Oxygen Demand (BOD) values exceeds the pollution level. Online and continuous monitoring is essential to monitor water conditions so that if there is pollution, it can be immediate handling. Wireless sensor network technology becomes part of the Internet of Things makes it possible for online data acquisition from several node stations that are spread in monitoring locations. This paper purpose the online BOD dan DO data acquisition continuously builds with combine the wireless sensor system and database replication concept. From implementing a database replication method for online monitoring of water pollution level, database replication continuously ensures consistency and prevents redundant data between node sensor station and server database, and provides reliable information on the www website.
Modification of the analyzer on electrooptics for cooking oil quality testing
Authors: Sugito H , Utomo G N , Firdausi K S , Sumariyah S , Khumaeni A 
Published: July 2021

Abstract
The importance of cooking oil for human consumption makes cooking oil needs to be aware of its quality. This research aims to design electrooptic devices by making modifications to the analyzer. The results of the ink design are used to test the quality of cooking oil. The method used in this tool is based on the electrooptical properties of cooking oil. Because the optical properties or the polarization angle used as an indicator of the quality of cooking oil is relatively very small, it is necessary to modify the analyzer on the existing electrooptics to avoid parallax errors and increase the effectiveness in measurement. Modifications were made by adding a stepper motor as an actuator, gears that intersect with certain radius ratios, and an ATMega 328P microcontroller for data controller and processing. in the cooking oil quality test, it can be distinguished oil that has expired and is still suitable for consumption based on the average value of the change in the polarization angle.
PV/T solar collector performance evaluation: generation of fuzzy rules by using weighted subsethood-based algorithm
Authors: Khalili N N W , Othman M , Bakar M N A , Abdullah L , Ramli N 
Published: July 2021

Abstract
A photovoltaic/thermal solar collector operates efficiently if the surrounding conditions are in a favorable state; where the factors or parameters such as solar radiation, ambient temperature, photovoltaic collector temperature and air mass flow rates are taken into consideration to ensure the performance of the collector achieves optimum level. Dependency on surrounding conditions limited the width of analysis that could be done on the factors affecting the performance of the solar collector. This study aims to generate fuzzy rules for solar collector performance evaluation. Experiments on the performance of a single passage air photovoltaic/thermal solar collector have been carried out, and a set of membership functions representing all significant factors has been generated. Then fuzzy rules of forecasting were developed using a weighted subsethood-based algorithm to predict the efficiency of the photovoltaic/thermal solar collector. In this fuzzy time series application, the concept of fuzzy rule-based systems was embedded to generate fuzzy if-then rules. The results showed that the PV/T solar collector performance with changes in parameters could be predicted based on the fuzzy rules that have been generated, and thus further could be used to determine the optimum factors conditions required to achieve optimum collector performance without having to carry out experiments.
Integrated survey to identify potential groundwater aquifers in Jabungan Semarang using geoelectric and microtremor methods
Authors: Yuliyanto G , Nurwidyanto M I 
Published: July 2021

Abstract
The morphology of the Jabungan Village area has relatively steep land conditions. In lithology, this area has a layer of soil composed of sandstone, claystone, and limestone. Based on direct observations in the field, it was found difficult to obtain clean water that could be used for consumption. The water available and used by the majority of residents is shallow well water, which is not of very good quality. There is only one deep well with a depth of 68 meters but according to residents, the water that is channeled to these houses smells unpleasant and feels oily. To detect the potential of ground water in this area, the geoelectric method is integrated using the microtremor method. Geoelectric measurements were made at 3 location points while microtremor measurements were carried out at 9 location points. Based on geoelectric resistivity and microtremor measurements, it can be concluded that the potential of subsurface water sources is below the JAB3 path or near Point 9 microtremor with soil layers composed of sand layers with resistivity values of 0.43-4.64 ohm-meter at depth > 70 meters with Vs value of 840 m/s with a Poisson’s ratio value > 0.3, the more eastward the greater the value.
Spintronic terahertz emission from Ni/Pt bilayer grown on MgO
Authors: Ferrolino J P , Cabello N I , De Los Reyes A , Mag-Usara V K , Afalla J P , Bardaloza H , Verona I C , Talara M , Kitahara H , Somintac A , Salvador A , Tani M , Estacio E 
Published: July 2021

Abstract
Spintronic THz emission from Ni/Pt bilayer grown on MgO is reported based on the novel THz emitter using metallic structures. The Ni metal was deposited first on a MgO substrate and capped with a thin Pt metal via electron beam deposition. The THz emission data was obtained using a standard terahertz time-domain spectroscopy setup using a Ti: sapphire laser excitation source. Initial measurements were done using 800nm excitation with 7 mW and 185 mW pump powers under upward and downward magnetic field orientations. Polarity reversal of the terahertz signal was observed upon changing the orientation of the magnetic field. Maximum amplitude was found at 0.5 THz with bandwidth up to ~6 THz. A saturation fluence of 85.04 mJ/cm2 was calculated from the pump fluence-dependence plot of the THz peak-to-peak signal. The results are consistent with the spintronic THz emission due to the inverse spin-Hall effect and provide insights for future development and optimizations.
Image quality radiographic testing on the making of trabeculae genu phantom by using ingredients surfactant
Authors: Sofyan M , Hidayati A O 
Published: July 2021

Abstract
Exposure to radiation can be dangerous for the body. Hence why we need an effort to minimalize the effects of radiation received, especially for students and lectures during practicum that uses source of radiation. One of the efforts that can be done is to use phantom radiology so that there is no need to expose living things. Previous research has done to make phantom radiology by using gypsum instead of human bones and acrylic as a substitute for soft tissue (human flesh). However, this research still has a shortage which is trabeculae cannot be formed in the phantom produced. The purpose of this study was to determine whether the surfactant solution could be used to form trabeculae in phantom genu by using in the concentration of surfactants with a ratio of 2: 1. The research was conducted in three stages, namely designing the genu phantom and trabecular phantom, printing genu phantoms and trabeculae, and conducting radiographic quality tests of genu phantom. Trabeculae in phantom genu have been successfully made with a water and surfactant ratio of 2:1. Radiographic quality tests showed good detail, sharpness and contrast. The presence of trabeculae and soft tissue is apparent. Surfactants with a ratio of 2:1 can be used to form trabeculae on phantom genu with good quality in radiographic test results.
Determination of effective dose distribution on the target volume of cancer and organ at risk using MCNPX
Authors: Wardaya A Y , Setiawati E , Arianto F , Richardina V , Almareanta R , Margiantono A 
Published: July 2021

Abstract
One method of therapy in cancer is Brachytherapy. which is by implanting radioactive radiation that emits gamma into the target organ. Because brachytherpy will also provide radiation doses to healthy organs around it so before doing therapy it is better to do the simulation first so that the dose received is the maximum target and the dose received by healthy organs in the vicinity (organ at risk) is minimal. The purpose of this study was to determine the distribution of the absorption dose in liver cancer with radiation source γ 103 Pd using MCNPX. In this study the target organ used was liver (liver cancer). Organs at Risk in liver cancer are the right lung, kidney and pancreas. One way to simulate this is to use Monte Carlo N Particles eXtended (MCNPX). In this study used 103Pd radioactive. the variation in the number of seeds used is from 10 to 70 seeds with an increase of 10. The 103Pd activity used is 2x10−3Ci. The results of the MCNPX simulation show that the effective dose is directly proportional to the number of seeds used. Effective doses in the liver are 0.101 to 0.699 Sv. in the right lung 0.032 to 0.229 Sv. in the kidney 0.0005 to 0.0039 Sv and in the pancreas 0.0001 to 0.0149 Sv. If in the liver the percentage of effective dose is 100%.then the distribution of effective dose percentage in the right lung is 34.67%.kidney 0.63% and pancreas 1.06%. The percentage of the effective dose distribution is relatively safe because it is still below 75%.
Analysis of flip angle (fa) toward image anatomical information in sagital t2* w merge: (study of knee joint magnetic resonance imaging in anterior cruciate ligament tear case)
Authors: Dartini D , Deofantri A , Kurniawan A N , Sulistiyadi A H , Handoko B D 
Published: July 2021

Abstract
The sagital T2* W MERGE sequence is a sequence in Magnetic Resonance Imaging (MRI) examination of the knee joint in the radiology department of Panti Rapih Hospital Yogyakarta. The value of Flip Angle (FA) on the T2 * W MERGE sequence will affect to anatomical information. The right FA can produce good image contrast of fluid and tissue. This study aims to find out the relationship between FA variations toward anatomical information and to determine the the optimum FA. Ten patients with Anterior Cruciate Ligament (ACL) Tear were scaned by 1.5 Tesla MRI using Sagittal T2 * W MERGE with five flip angle variations: 150, 200, 250, 300, and 350. The anatomical informations were assesed by two qualified radiologists in ACL Tear, Posterior Cruciate Ligament (PCL), Quadriceps Tendon, Joint Effusion, and Hoffa Fat Pad. Data were analyzed by Cross Tabulation, Spearman Rank test and Freadman test. Result showed that there was a significant correlation (p-value < 0,05) between flip angle value to anatomical information (correlation value was -0.55), increasing the FA will reduce the clarity of the anatomical image. Based on Freadman test results, the highest mean rank of image information was 3.89 obtained by FA 200.
Molecular and phylogenetic analysis of inulinase-producing yeast isolated from nira siwalan (Borassus flabellifer) based on ITS sequences
Authors: Maryati D A , Wijanarka  , Ferniah R S 
Published: July 2021

Abstract
Inulinase (E.C. 3.2.1.7) is an enzyme capable hydrolyze inulin to be a fructose monomer, which is widely used in various fields, especially the food industry. This enzyme can be found in various plant species and can be produced by microorganisms such as bacteria, yeast, and fungi. Previous research has succeeded in isolating the potential yeast of inulinase from nira siwalan (Borassus flabellifer), named N1. This research purpose to identify molecularly the yeast inulinolytic N1 and its kinship with other species based on internal transcribed spacer (ITS) rDNA sequences. The stages in this research are yeast DNA extraction using the chelex method, DNA amplification with primers ITS 4 and ITS 5, electrophoresis, sequencing analysis, and construction of the phylogenetic tree. Phylogenetic trees are reconstructed using the neighbor-joining method based on their evolutionary relationship. The results of DNA isolation showed that the concentration of yeast DNA was 495.8 ng/ μl and purity of 2,12. The PCR product from the ITS fragment amplification produced a band size of ± 510 bp. The results of molecular identification and phylogenetic analysis showed that the N1 yeast isolate was closely related to Candida parapsilosis (MK638869.1) originating from India with a homology of 99.45%.
The anatomic response of the mangrove vegetation due to the changing in land functions
Authors: Prihastanti E , Hastuti E D , Haryanti S , Purnomo S P 
Published: July 2021

Abstract
The mangrove forest in Indonesia have transformed into conservation area, tourist objects, and fishponds, causing the environmental changing. The purposes of this research are to find out the condition of the environment, the varieties of the species and the anatomy of the leaves. The locations of this research are determined based on the Karimun Java in December 2019. The locations are conservation area in Menjangan Besar Island, fishpond area in Kemujan Island and Mangrove Tracking area. The environment parameters such as temperature, pH, DO, TDS, and salinity. Photomicrograph is used to check stomata. The data are analyzed descriptively. The environmental conditions in those three locations have different condition, except temperature. The species found in Menjangan Island are A.marina and R.stylosa, the species found in Kemujan fishpond are C.tagal, R.apiculata and E.agallocha meanwhile the species found in tracking Kemujan are C.tagal, R.apiculata, R.stylosa and L.racemosa. The result of the observation towards the anatomy of the leaves in those three locations has not showed responses to the environment stress, but the condition of the environment in the fishpond showed the rising in salinity level. Therefore, it is suggested to grow Avicennia because it is more adaptable towards high level of salinity.