bluuebunny/crossref_metadata_2025_split huggingface dataset:
Radiocarpal Contact Pressures Are Not Altered after Scapholunate Ligament Tears
Authors: Huddleston Hailey P. , Kurtzman Joey S. , Levy Kenneth H. , Connors Katherine M. , Hayes Westley T. , Koehler Steven M. 
Published: July 2021

Abstract
Background The scapholunate interosseous ligament (SLIL) couples the scaphoid and lunate, preventing motion and instability. Prior studies suggest that damage to the SLIL may significantly alter contact pressures of the radiocarpal joint.
Questions/Purposes The purpose of this study was to investigate the contact pressure and contact area in the scaphoid and lunate fossae of the radius prior to and after sectioning the SLIL.
Methods Ten cadaveric forearms were dissected distal to 1-cm proximal to the radiocarpal joint and a Tekscan sensor was placed in the radiocarpal joint. The potted specimen was mounted and an axial load of 200 N was applied over 60 seconds.
Results Sectioning of the SLIL did neither significantly alter mean contact pressure at the lunate fossa (p = 0.842) nor scaphoid fossa (p = 0.760). Peak pressures were similar between both states at the lunate and scaphoid fossae (p = 0.301–0.959). Contact areas were similar at the lunate fossa (p = 0.508) but trended toward an increase in the SLIL sectioned state in the scaphoid fossa (p = 0.055). No significant differences in the distribution of contact pressure (p = 0.799), peak pressure (p = 0.445), and contact area (p = 0.203) between the scaphoid and lunate fossae after sectioning were observed.
Conclusion Complete sectioning of the SLIL in isolation may not be sufficient to alter the contact pressures of the wrist.
Clinical Relevance Injury to the secondary stabilizers of the SL joint, in addition to complete sectioning of the SLIL, may be needed to induce altered biomechanics and ultimately degenerative changes of the radiocarpal joint.
Access to electricity and digital inclusion: evidence from mobile call detail records
Authors: Houngbonon Georges V. , Le Quentrec Erwan , Rubrichi Stefania 
Published: July 2021

AbstractDespite significant progress in mobile connectivity, a large number of individuals in Sub-Saharan Africa are at risk of being left behind, especially those living in rural areas and women. In this paper, we use an original data set of mobile call detail records from Senegal and exploit variations across plausibly similar rural municipalities to assess the impact of access to electricity on mobile connectivity. We find that access to mobile connectivity for rural users, measured by mobile telephony subscriptions or smartphone ownership, increases with access to electricity, with a stronger impact for women. The impact on usage is also positive, but stems from the increased volume of incoming communications: rural mobile users with access to electricity do not place more calls than those with limited access; rather, they receive more calls and text messages from urban areas, especially those with higher living standards. These findings suggest that access to electricity can be a significant driver of digital inclusion in Sub-Saharan Africa.
Introduction to the Symposium
Authors: Quinn Kevin M. 
Published: July 2021

AbstractThis issue of theJournal of Law and Courtsfeatures articles devoted to measuring the personality traits of US Supreme Court justices. In this brief comment, I attempt to do the following. First, I briefly summarize Hall et al. (2021) and Black et al. (2021). Here I pay special attention to some of the methodological issues that give rise to the disagreement between these authors. Second, I provide some general thoughts on the enterprise of attempting to measure personality traits of US Supreme Court justices. While I am generally skeptical of the utility of such an enterprise, I could be convinced of its value. Accordingly, I attempt to lay out what a skeptic like myself would like to see in order to be convinced of the intellectual value added of work in this area.
How State Judicial Selection Methods May Influence Views of US Supreme Court Nominees
Authors: Krewson Christopher N. , Owens Ryan J. 
Published: July 2021

AbstractWe examine whether state judicial selection methods influence people’s evaluations of US Supreme Court nominees. We find that people from appointing states use nominee characteristics in their evaluations differently than people in electing states. Those from appointing states appear to be more concerned with traditional legal factors, while people from electing states appear to be slightly less concerned with them. Although the importance varies from characteristic to characteristic, state judicial selection system has a broad role in shaping how people evaluate judicial nominees. These findings counsel further research on judicial institutions and the public’s expectations of judges.
Geoelectrical survey and groundwater chemical analysis in Sumowono Groundwater Basin
Authors: Putranto T T , Susanto N , Pangestuti D R 
Published: July 2021

Abstract
Sumowono groundwater basin is an inter-regency groundwater basin located in Central Java Province. The administrative areas are Semarang Regency, Temanggung Regency, and Kendal Regency. Hilly regions dominate the study area. This study aims to identify the subsurface lithology and analysis of the water type of groundwater samples. The methods were geoelectrical survey using Schlumberger array and physical and chemical of groundwater samples analyses from dug wells and springs. The results of the geoelectrical survey conduct five types of lithology with the resistivity value from 0 to more than 190 Ωm. They are claystone, tuff, tuffaceous sandstone, sandstone, and breccia. The chemical properties of groundwater samples indicate that the pH has a range from 6.4 to 7.27 with electrical conductivity (EC) from 71.6 to 511 µS/cm. Moreover, the Total Dissolved Solids (TDS) start from 45.8 to 327 mg/L. The water types are Mg2+-Ca2+-HCO3
−Cl-, Ca2+-Mg2+-HCO3
--Cl-, Ca2+-Mg2+-HCO3
-, Ca2+-HCO3
--Cl-, Ca2+-Mg2+-HCO3
--SO4
2-, and Ca2+-HCO3
--SO4
2-.
The complete bouguer anomaly changes in 2019 after explosive eruption of merapi in 2010
Authors: Indriana R D , Nurwidyanto M I 
Published: July 2021

Abstract
Merapi is the most active volcano in Central Java and even in Indonesia. Previous research in 1988,1998,2011 by using the gravity method shows an increasing amount of magmas, which are observed from changes in the dimensions of the magma chamber. The aim of this research is to observed the gravity changes nearby summit area after big eruption in 2010. In this research the summit area was close because of the activity of Merapi. The results of further studies in 2019 showed a large anomaly increase of 2 to 5 mGal in the southeast to the southwest. Gravity data in the peak area has not yet been acquired due to the high activity of Merapi. The subsurface interpretation related to changes in the dimensions of the magma reservoir cannot be done, but it can be expected increasing of mass at the southeast of Merapi towards the peak. The increasing amount of mass cause Merapi eruption in 2020.
Selective mine plan based on coal quality distribution of Batu Ayau formation, Murung Raya-Central Kalimantan
Authors: Qadaryati N , Hapsari R A , Hidajat W K 
Published: July 2021

Abstract
Coal quality, which eventually controlling coal’s behavior during preservation, combustion, and other forms of utilization, are defined by the depositional environment in which the peat was formed. Batu Ayau Formation is a well-known coal-bearing formation of Barito Basin and has been thoroughly explored. The aim of this study, which differs from previous studies, is to figure out the correlation of depositional environment to the coal quality of Batu Ayau Formation and anticipate the less desired coal quality from being mined. The depositional environment is determined through the stratigraphic section compared to Horne model, supported by coal facies determination using Tissue Preservation Index (TPI) vs Gelification Index diagram. Ash and sulphur content (weight %) data from 4 seams are integrated to the lithostratigraphic column. The coal quality distribution is defined from good correlation. The coal-bearing depositional environment of the studied area is transitional – upper delta plain. The ash content is ranging in 5.20-8.64wt% and total sulphur is ranging in 0.34-1.28%. The position of depositional environment that is closer to open marine, which is dipping westward, is preferable in terms of quality. Hence, coal on the center part of the research has preferable coal quality to be mined.
Synthesis and magnetic properties of ferromagnetic W-type hexaferrite by mechanical milling route
Authors: Priyono  , Nurhasanah I , Subagio A , Suseno J E , Sutanto H 
Published: July 2021

Abstract
The W-type Barium hexaferrite particle have been successfully synthesized by mechanical milling route. The formation of phase BaFe16Co2O27 through two-stage mechanism which starts with the formation of BaFe19O19. The synthetic result is tested by X-ray Diffraction (Cu(Kα) to determine a structure and formation phase. The magnetic characteristic is tested by permeagraph in saturating field up to 1.5 Tesla. The synthetic result shows that the partial substitution of Fe2+ ions with Co2+ ions influence the change in magnetic properties particularly coercivity. W-hexaferrite has a promising potential in microwave absorption application in the future especially in the range at 8 Ghz to 9,0 GHz.
A study of relative dissociation energy through electro-optics effect as a potential tool for evaluation of cooking oil quality
Authors: Septiani A , Utomo G N , Sumariyah  , Richardina V , Sugito H , Azam M , Soesanto Q M B , Firdausi K S 
Published: July 2021

Abstract
The electro-optics effect is a potential tool to observe and evaluate different oil quality. In this research, we study relative dissociation energy through the electro-optics effect to evaluate vegetable oil quality. Some vegetable cooking oil samples with different quality were placed in an external potential difference between parallel plates to obtain the electro-optical characteristics by measuring the polarization change using red pointer laser (650 nm). The empirical values of dissociation energy was obtained by fitting experimental data of the average polarization changes per unit potential difference with Lenard-Jones potential formula under the assumption that the interaction between molecules is a Vander Waals interaction. The results show that the average change in polarization is proportional to Lenard-Jones potential energy. An important result showed that a good oil quality is indicated by relatively high dissociation energy. Reducing the oil quality leads to increasing relative dissociation energy. This provides electro-optics as a very potential method in differentiating various cooking oil qualities and new perspective of interacting linear polarized light with oil molecules.
Design of overloading detection systems on vehicles using adruino
Authors: Rohim M Z , Wijayanti E , Murti A C 
Published: July 2021

Abstract
Developing countries such as Indonesia are currently continuously conducting development activities in the economic sector. The role of transportation facilities is very important. The reason is that economic movement is not only centered on one particular area but also reaches out and involves other regions. Distribution of goods and services requires safe and convenient transportation and good road infrastructure. In practice, many heavy vehicles carry a very excessive transport load. This is due to the large distribution needs of goods to minimize operational costs. The negative impacts of overloading include the risk of accidents and road damage. This study aims to use a prototype method by utilizing the implementation of a load control system using a proximity sensor run by Arduino Uno. This concept utilizes proximity sensors to regulate transportation loads according to the standards of the Republic of Indonesia and monitor violations in real-time. The results of the study resulted in a prototype capable of detecting overload based on load height and suspension changes for loads.
The acceleration of water absorption time in natural silk fabrics (Bombyx Mori) irradiated with positive and negative corona plasma discharges at atmospheric pressure
Authors: Muhlisin Z , Nugraha M K , Rahmawati I , Arianto F , Umiyati N A K , Triadyaksa P 
Published: July 2021

Abstract
This study aims to examine the acceleration of water absorption time in natural silk fabric irradiated with negative and positive corona plasma discharge generation at atmospheric pressure. The point-to-plane electrode configuration is made by one hundred point electrodes, equally distributed, in a 10 x 10 square plane and a plane electrode made of copper. The positive plasma discharge is generated by connecting the point electrodes to a high voltage power supply. In contrast, the negative plasma discharge is generated by connecting the power supply to the plane electrode. During the plasma discharge irradiation, the dyeing natural silk (Bombyx Mori) samples are placed on the plane electrode with varying irradiation duration and electrode spacing. Identification of irradiation effects on the fabrics was made using water drop test and SEM (Scanning Electron Microscope). Increasing the electrode’s gap improves the stability of the corona discharge by reducing the discharge current. Moreover, longer irradiation time results in faster water absorption due to a significant interaction between the torn fabrics and water, especially at a broader electrode gap. In conclusion, both positive and negative corona plasma discharges irradiation alters water absorption time, with longer irradiation time results in faster water absorption by samples.
Effect of variations in milling speed with high energy milling treatment on surface area of biochar material
Authors: Subagio A , Umiati N A K , Kholil M A , Ratih S D , Purbalisa W , Wahyuni S , Paputri D M W 
Published: July 2021

Abstract
Biochar is a renewable and abundant carbon source and is useful for increasing food security and plant diversity in areas with poor soil conditions, lack of organic matter, lack of water availability and chemical fertilizers. Biochar micro porous structure can be produced from corncob material which inherits the architecture of raw materials. To increase the surface area of the biochar material, high energy milling treatment was carried out in this study by varying the speed of milling in the same milling time. Milling time is carried out at 3 hours with milling speeds varying of 300, 500 and 700 rpm. The samples were characterized by X-ray diffraction, scanning electron microscope (SEM), particle size analyser (PSA), and surface area analysis - Brunauer, Emmett and Teller (SAA-BET). The test results show that at speed of 300, 500 and 700 rpm it has produced biochar with a particle size of 947,9; 868,5 and 799,2 nm, respectively. While the SAA-BET test has produced a surface area of 10.115; 15.889 and 18.303 m2/g. This study describes an increase of surface area when compared without milling treatment which has a surface area of 7917 m2/g.
Analysis of landslide in Bungkah, Sepakung, Banyubiru using ground shear strain method and shear wave profile from HVSR method
Authors: Yuliyanto G , Nurwidyanto M I 
Published: July 2021

Abstract
In Bungkah, Sepakung, Banyubiru there was a landslide several times Monday to Thursday, 17 to 20 October 2017 which occurred due to the high intensity of rain in the region within 2 consecutive days. The landslide material was able to close the road that became access to local residents’ settlements. Besides that, in Bungkah, there is a resident’s house made of permanent walls that are curved on the wall due to ground movement while the house next to it does not occur. To analyze these phenomena, a single station microtremor method is used, namely the HVSR analysis with amplification values and dominant ground frequency of the curves obtained can be used to determine the peak ground acceleration and seismic vulnerability index which can then be used to analyze ground shear strain value or the ability of the soil layer to stretch and shift when receiving elastic wave propagation. Based on the ground shear strain value, Bungkah has values ranging from 10−3 to 10−1, the phenomenon that will occur is landslides with the dynamic nature of the soil included in the category of soil or rock collapse. Based on the results of frequency and amplitude inversion, the profile of Vs is obtained to the depth that can accurately image the shape of the slip surface from landslide that occurred in October 2017. The sensitivity of Vs to the presence of fluid imaged an accumulation of water below the landslide limit. The mechanism of land movement in the Bungkah hamlet is a rotational slide avalanche type. The movement of the soil which causes the curvature of the walls of one of the permanent houses in Bungkah due to the existence of a vertical soil layer with very low Vs which is directly bordered by massive Vs. The boundary of this layer may be cavity or cavity. The existence of a massive layer in the east of the area makes no continuity of soil movement to the east.
Correlation of Vp/Vs ratio against the resistivity value to determine the aquifers presence estimation in jetak sub-village, getasan sub-district, Semarang regency
Authors: Yulianto T , Sasongko D P , Yulianto G , Indriana R D , Setyawan A , Widada S 
Published: July 2021

Abstract
Jetak Sub-Village, Getasan Sub-District, Semarang Regency, was an area that had found difficulty in getting clean water because it was not located in the groundwater basin area. The correlation between the Horizontal to Vertical Spectral Ratio (HVSR) and the Resistivity method could be used to determine the estimation of the aquifer’s presence. Based on the interpretation of the correlation results of the HVSR model using the Vp/Vs ratio against the rock resistivity value showed the presence of shallow aquifers at a depth of between 20-50 m below the earth’s surface in the sandstone layer. Sandstone based on HVSR at a location that has a Vp/Vs ratio of 1.8-2.3 and in resistivity modeling had a value of 21.1ohm-m. These results indicated that the aquifer is not a groundwater aquifer that can be used for needs during the dry season.
Determining the hydrothermal flow media using seismicity properties in Kaliulo geothermal field, Semarang, Central Java, Indonesia
Authors: Harmoko U , Gernowo R , Yuliyanto G 
Published: July 2021

Abstract
Geothermal system requires specific geological condition that allow deep circulation of ground water to extract heat from the heat source. Faults and fractures play a major role in the localization and evolution of hydrothermal flow on several scales. The research aim was to obtain the permeability pattern of hydrothermal fluid base on response of micro seismic waves to subsurface structures. In one dimensional structure, average Horizontal to Vertical (H/V) spectral ratios can be assumed to measure the ellipticity of fundamental mode Rayleigh wave. Hence the shape of H/V ratios can be used to estimate the shear-wave velocity profile. The poisson’s ratio value of the hot spring corresponds to the physical properties of rock containing fluids. The thickness of the sand deposit and the soft layer indicated in the hot spring zone. We interpreted that we have warm springs in the research area comes up by the fracture or fault zone and permeable zone of sand soil. The mixing waters flow to the earth’s surface through the structure.
Estimation of landslide prone zones around the Semarang Fault based on by combining the slope stability analysis and HVSR microtremor methods
Authors: Irham M N , Yulianto T , Yuliyanto G , Widada S 
Published: July 2021

Abstract
Morphologically the City of Semarang consists of Downtown and Uptown Semarang. Downtown Semarang which is composed of alluvial deposits and sandstone of the Damar Formation. Uptown Semarang composed of conglomerate of the Damar Formation, claystone of the Kalibiuk Formation, volcanic breccia of the Kaligetas Formation, volcanic breccia of Ungaran Volcano, Andesite igneous rock, and Basalt igneous rocks. Upper Semarang is hilly, some of which have steep slopes, especially on the Semarang Fault Zone. This condition makes the area frequent landslides. To find out the zone that is prone to landslides in the area around the Semarang Fault, slope stability analysis and microtremor measurements were performed. Slope stability analysis was carried out at 7 points using the bishop method based on slope, specific gravity, internal shear angle and soil cohesion. The acquisition by microtremor method was carried out at 9 trajectories that were estimated to pass through the Semarang Fault, then from the Horizontal to Vertival Spectral Ratio (HVSR) curves obtained was carried out an inversion to obtain the shear wave velocity profile on the trajectory. From the two methods of analysis found several locations with potential landslides, namely in the area of Mangun Harjo in the east of the study area, Karangrejo in the middle of the study area and Sadeng in the west of the study area.
Development and evaluation of a computer based test for anatomy radiographic course examination
Authors: Indrati R , Sulistiyadi A H , Mulyati S , Daryati S , Setyawan B 
Published: July 2021

Abstract
The assessment of the anatomical radiography course is to measure the student’s ability to identify anatomy on radiographic images. Conventional paper tests have used radiographic images. The limitations of this method are the number of radiographic films and the time-consuming assessment process. This study aimed to develop a computer-based test (CBT) to multiply the instruments, store pictures, and speed up the assessment time. The CBT software can reproduce radiographic images using digital files and a feature to add overlay markers. The placement of markers is done intuitively via a user interface with drag and drop motion recognition. The CBT software also provides features for instrument bank, instrument selection and management for exams, a relational database for examinee identities and exam entries, and automatic grading. CBT development uses the Waterfall Software Life Cycle (SDLC), with black-box testing using the normal value equivalent partition method. The CBT usability test was carried out by measuring user perceptions (5 administrators and 60 students) and comparing them with conventional methods at the 95% significance level. Research time decreased significantly during instrument preparation and the assessment process. User perceptions show that 76% of students and 85% of managers give positive assessments. There is no difference between conventional and CBT assessments with a p-value = 0.067 (p-value > 0.05) so that CBT is very potential to be used as a substitute for conventional paper-based tests in examining anatomical radiography courses.