bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magnetic Basement Relief Modelling Using the Magb_Inv Program in South of The Makassar Strait Area
Authors: Alifna R , Bijaksana S , Fajar S J , Ramadhani R A , Ibrahim K , Suryanata P B , Harlianti U 
Published: December 2024

Abstract
Indonesia is located between three large plate confluences: Indo-Australian, Eurasian, and Pacific. The activity of the three plates will affect the orientation and distribution of geological structures such as formation of faults and basins, in this case, the research was conducted in the South Makassar Strait and includes two basins, namely the Makassar Basin and Spermonde Basin. Magnetic method used in research to provide magnetic modeling information in the region study. This method works based on the measurement of susceptibility variations on the earth’s surface caused by differences in anomalies in the surrounding area. Data used in research, namely magnetic anomaly data obtained from the ESDM geoportal and bathymetry data research area. In this research, magnetic basement relief modeling was carried out using MATLAB based MagB_Inv program. The initial parameters that affect the result of the study are inclination and declination, contrast magnetization, wavenumber range selection, and initial depth estimation. Depth estimation Initial results were obtained using the radial average power spectrum (RAPS) method. The results of this study in the form of basement depth in the range of 5.5 km to 8.9 km. According to geological conditions, there is a decrease in the basement to the southeast in 3D modeling caused by a fault Spermonde Basin Flat.
An Integrated Approach to Economic Analysis of EOR Projects: EOR Screening to Optimization of Field Development Scenario
Authors: Daniati Arik , Syihab Zuher , Yasutra Amega , Bhakti Setiawan Muhammad 
Published: December 2024

Abstract
Conducting a comprehensive evaluation for framing enhanced oil recovery (EOR) projects poses challenges during the initial stages. There is no evaluation that can provide a precise quick-look assessment that can be applied in a field. This study aims to implement an integrated EOR analysis workflow using the Pertamina’s in-house PertaEOR-lite© software in the “ADP” field. A predictive model developed by the US DOE was used to perform reservoir performance prediction based on the most suitable EOR method. Economic evaluation was performed to determine the NPV, IRR, and POT values, while sensitivity analysis and risk assessment were conducted using the Monte Carlo simulation. The optimal scenario was determined using stochastic optimization methods on fields with different pattern areas and the number of infill wells. Based on the EOR screening, chemical injection of Miscellar Surfactant+Polymer was selected as the most suitable EOR method. The economic indicators determined through sensitivity analysis are primarily influenced by technical factors such S
or, and VDP. Additionally, economic variables such as oil prices, investment, and injection costs. The results showed that the best EOR development scenario was to be 8 patterns with an area of 28 acres each, no additional infill wells required, 8 injectors from converted producers. This scenario produces an NPV of K.USD 6,309, an IRR of 48.9%, and a POT of 2.8 years. The study’s novelty is in its integrated approach. Further analysis is necessary to determine decision quality and obtain the best decision prior to field implementation project.
Fault Delineation On Syntetic Seismic 3D Data Using Artificial Intelligence
Authors: Febriarta Bondan , Priyono Awali 
Published: December 2024

Abstract
Fault delineation is a crucial process for exploring stratigraphic structure and reservoir properties from seismic data. It plays a vital role as faults often offer valuable insights into the accumulation and migration paths of geological resources. As the size of seismic data increases, fault picking becomes a laborious task, demanding high accuracy from interpreters. Automation is essential to expedite this process and minimize human subjectivity in fault picking. To automate this task, we employ deep learning algorithms, particularly convolutional neural networks (CNNs). In this research, we utilize a 3D U-Net architecture known as FaultSeg3D, with a focal loss function for the training process. The dataset comprises 220 pairs of synthetic data, including 200 pairs for train/test and 20 pairs for validation. Results from the training process indicate a converging loss function curve, with values of 0.0154 for training and 0.0308 for testing. This convergence signifies the success of the training process. Quantitatively, fault delineation estimates from the CNN model demonstrate favorable values based on performance metrics, including precision, recall, and F-1 score, on validation data—approximately 0.6, 0.9, and 0.75, respectively. Each of these value was obtained from testing on validation data. Qualitatively or visually, the fault delineation estimates on validation data using the CNN model outperform the variance attribute. The resulting fault delineation estimate from the CNN model appears more continuous, with fewer inaccuracies compared to the variance attribute. Considering the excellent performance metrics when applied to synthetic data, this potential could be promising to continue with its application to field data which can be carried out for further research.
The Interpretation of Subsurface Structure Beneath Banda Api Volcano Inferred from Gravity Data
Authors: Ahmady F N , Santoso D 
Published: December 2024

Abstract
Indonesia has 127 active volcanoes along subduction zone, one of them is Mount Banda Api. As active volcano which is surrounded by the sea, volcanic eruption may trigger destructive tsunami in the adjacent coastline. Several geological studies had been conducted to understand the history of volcanic eruption based on the surface mapping. However, in order to further interpretation regarding subsurface activity of the volcano geophysical data is needed. Therefore, the purpose of this study was to understand the subsurface structure of Mount Banda Api based on the interpretation of gravity data. The Complete Bouguer anomaly are acquired by PSDMBP in 2016. The complete Bouguer anomaly range is 130-200 mgal with low values located on the Banda Api volcano and high anomalies on Neira Island and Lonthoir Island. Then 2D spectral analysis is conducted to estimate the depth of regional dan residual anomaly and determine the optimal Moving Average (MA) windows to conduct regional-residual separation. Furthermore, the residual anomaly and background density of 2.63 g/cc was used to interpret the subsurface structure beneath the volcano by conducting forward modelling 2,5 D. The resulting model shows that the low anomaly in the study is estimated as a response to the presence of magma at the bottom of Mount Banda Api-Neira.
Utilizing the Gravity Method for Initial Estimation of CO2 Storage Capacity in Supat Field, South Sumatera
Authors: Adhiatha Herlambang Kevin , Iskandarsyah  , Aulia Valencia Ayunda 
Published: December 2024

Abstract
Carbon Capture and Storage (CCS) technology is one of the solution to global warming. CCS is a method that involves separating CO2 from industrial and energy sources, transferring it to storage, and isolating it from the atmosphere for long periods of time. The Supat Field, South Sumatra is one of the mature oil and gas fields that could be used for CO2 storage in Indonesia. The gravity method is used to determine how much volume of CO2 can be stored in the Talang Akar Formation, Supat Field. By utilizing residual anomaly gravity data and the combination of Occam and Singular Value Decomposition (SVD) inversion method, it is possible to model in three-dimensions and estimate the volume of CO2 that can be stored in the field. The Talang Akar Formation is dominated by sandstone with interconnected porosity. The effective volume can then be calculated by multiplying the bulk volume by the range of sandstone porosity (15-30%), which can be known via gravity method. The Complete Bouguer Anomaly Map provides a range of Bouguer anomaly values between 42 mGal to 46 mGal. Based on the spectrum analysis graph, the anomaly depth limit is 2.0996 kilometers below the surface, while the residual anomaly depth limit is 0.9524 kilometers below the surface. The anomaly separation technique used is Polynomial Trend Surface Analysis with the order used is first order. The effective volume of CO2 that can be stored in the Supat Field ranges from 1.73 to 4.42 km
3.
Earthquake relocation and deformation analysis on the Mentawai segment of the Sumatra subduction zone
Authors: Aulia A N , Jatnika J , Arisa D , Ramdhan M , Patria A , Handayani L 
Published: December 2024

Abstract
The Mentawai segment, which is located on the western coast of Sumatra, Indonesia, is characterized by the convergence of the Indo-Australian Plate and the Sunda Plate. The complex interactions between these two tectonic plates have given rise to numerous earthquakes and deformations. After the devastating earthquake (Mw 7.8) in 2010 followed by a tsunami, this segment remains locked and has the possibility to produce a great earthquake. This study aims to determine precise earthquake locations and analyze the pattern of seismic distribution along with the deformation analysis from continuous GPS observations to understand the plate dynamics. We use the earthquake catalog data from the Agency for Meteorology, Climatology and Geophysics (BMKG) of the Indonesian earthquake network during the time period April 2009-December 2021. To improve the accuracy of the hypocenter, we relocated 1,130 events consisting of 10,994 P- and 3,414 S-wave phases and update the minimum 1-D velocity model simultaneously using the Joint Hypocenter Determination Method. Our results show that the intense seismicity occurred at a depth of less than 50 km. At deeper depths, the earthquake is distributed along the subducting plate to a depth of ~200 km in north and ~250 km in the south. Our findings strongly support the inference that the plate interface lies at a depth of 20 km. This conclusion is substantiated by the sharp increase in seismic velocity at that particular depth, which is indicative of a significant boundary between distinct geological layers. Furthermore, our investigation has uncovered a prominent aseismic zone beneath the forearc basin, situated approximately 100 km away from the trench line. The plate velocity derived from continuous GPS observations confirmed the stable movement of subducting Indo-Australian place towards the Sunda plate along the Mentawai segment. Finally, the results of this study are addressed to conduct further three-dimensional velocity inversion studies.
Source Analysis of April 2, 2023, Magnitude 5.6 Flores Sea Earthquake North of Bima, Sumbawa, Indonesia
Authors: Najib Syami Muqtadir Muhammad , Sianipar Dimas , Suardi Iman , Wandono W. , Daniarsyad Gatut , Daryono D. 
Published: December 2024

Abstract
The seismotectonic setting and the potential of significant earthquakes from the Flores Sea region in eastern Indonesia are not well understood. On April 2, 2023, a magnitude 5.6 earthquake occurred north of Bima (Sumbawa), specifically under the Flores Sea. This area has a complex tectonic setting with a Flores back-arc thrust and some local active faults. Our study aims to analyze the source mechanism of this earthquake using moment tensor inversion and hypocenter relocation methods. We utilized five (5) three-component regional BMKG seismic stations for the moment tensor inversion and analyzed aftershocks within one month following the main event for hypocenter relocation purposes. Our findings indicate that the earthquake was generated by an unidentified fault segment with a strike-slip mechanism, either an N/NW-S/SE west-dipping fault segment or an E-W north-dipping fault segment. Through hypocenter relocation, we found that aftershocks were oriented directly to the N/NW-S/SW north of the Flores Thrust fault zone. We interpreted that this earthquake was not directly associated with the activity of the Flores Thrust system. This study can help update our understanding of the active fault system around the Flores Sea and as a constraint to support seismic hazard mitigation.
Stability analysis of open stope #20 in sill pillar #2840 based on mining frame 134 using numerical, empirical, and analytical approaches at the Big Gossan Mine
Authors: Maulana A I , Prassetyo S H , Wattimena R K , Sjadat A , Hamman J P E 
Published: December 2024

Abstract
Sill pillar #2840 has been identified as an economical reserve and is therefore planned to be mined. Stope #20 is one of 69 stopes in the sill pillar that will be mined. The stope is about 540m from surface. Mining activities that are far from the surface will cause stress redistribution. A geotechnical analysis was required to observe the stability condition of the open stope. The stability can be calculated by considering the induced stress around the open stope. The calculation of the Factor of Safety (FS) will be carried out using a numerical approach with Rocscience’s RS2 software using the Generalized Hoek-Brown failure criterion for hard rock and the Mohr-Coulomb failure criterion for paste fill, an empirical approach using a Modified Stability Number (N’) (Potvin, 1988) to calculate the stability of hard rock around the open stope, and an analytical approach using the Limit Equilibrium Equation (Mitchell, 1991) to calculate the stability of the paste fill around the open stope. The results of the approaches will be verified by the Sakurai chart. Based on the approaches, stope #20 in sill pillar #2840 is in stable condition to be mined.
Peer assessment as an exam prerequisite in undergraduate mathematics teaching: experiment and practical advice
Authors: Reddiger Maik , Scherfner Mike 
Published: December 2024

Abstract
In undergraduate STEM education mathematics-focused courses pose a major obstacle towards degree completion for many students not majoring in the subject. This may be addressed by providing regular, individual feedback on student work, yet many, especially smaller institutions lack the respective financial resources. One of the most promising approaches to this problem is peer assessment (PA), which has indeed been shown to be more effective in facilitating student learning than assessment by teaching staff. In this quasi-experiment we explore the practical scenario of employing PA as a grading tool in the context of an exam prerequisite in an undergraduate mathematics class. Not only does the exam prerequisite incentivize students to participate, but the use of PA in this context also alleviates ethical concerns that accompany its use as a grading tool. Both groups were composed of first semester computer science students ($n_{0} = 24$, $n_{\textrm{PA}} = 26$). For the PA group the exam prerequisite consisted of weekly assignments over the course of the semester, whereas students in the control group had to pass a single written test to be admitted to the exam two weeks later. An increase of $23.1\%$ (or $8.7$ percentage points) in the exam passing rate of the PA group was observed, though plausibly participant number was too low to reach statistical significance ($p =.370$). We also found a positive correlation between scores in the PA process and exam performance ($r =.55$, $p =.007$). Student opinions on the intervention were generally favorable. In a true experiment the time spent on managing the PA process should be measured. Advice for the use of PA as an exam prerequisite is also provided here.
Lateral Brow-Eyelid Contour After Traditional Blepharoplasty Versus Blepharoplasty With Brassiere Sutures Using Three-Dimensional Imaging
Authors: Novaes de Figueiredo Rassi Marisa , Veronese de Almeida Bruna , Limongi Roberto Murillo 
Published: December 2024

Purpose:
This study aims to compare the lateral brow-eyelid contour following traditional blepharoplasty versus blepharoplasty with brassiere sutures using 3D imaging.

Methods:
This prospective, randomized, comparative, parallel-group trial involved 56 female patients with dermatochalasis. Patients with an odd number of letters in their first names underwent traditional upper blepharoplasty (group A), while the rest underwent blepharoplasty with orbicularis oculi muscle fixation (group B). All procedures were performed by a single surgeon. Postoperative 3D photographs were standardized in a three-quarter view and analyzed using textured overlays.

Results:
In traditional blepharoplasty, 64.5% of patients exhibited flatter eyelid contours with shorter lower convexity. In contrast, the brassiere suture group showed increased convexity above and below the eyelid crease and increased tarsal platform show in 60% of patients.

Conclusion:
The authors recommend preserving and repositioning fat in upper blepharoplasty for its safety and aesthetic benefits.
Comparison of accuracy and axial length acquisition success rate by three types of swept-source OCT-based biometers
Authors: Kato Yukihito , Ayaki Masahiko , Tanaka Yoshiki , Tamaoki Akeno , Sakai Yukihiro , Ichikawa Kei , Ichikawa Kazuo 
Published: December 2024

Purpose:
To compare three biometers equipped with swept-source optical coherence tomography (OCT), including ARGOS (OCTB1), IOLMaster 700 (OCTB2), and Anterion (AS-OCTB). The primary aim was to assess the axial length (AL) acquisition success rates, and secondary aims included comparing parameters obtained from the three devices and evaluating postoperative refractive prediction errors.

Setting:
Chukyo Eye Clinic, Nagoya, Japan.

Design:
Retrospective observational study.

Methods:
The study included patients undergoing preoperative assessments for cataract surgery using the three biometers. The AL acquisition success rates and parameters obtained from the three devices were compared and the postoperative refractive prediction errors (defined as the difference between subjective refractive error and predicted refractive error) were assessed at one month after surgery.

Results:
The study included 361 eyes from 361 patients. The AL acquisition success rates for all patients were 100.0% (n=361) (OCTB1), 98.6% (n=356) (OCTB2), and 96.7% (AS-OCTB) (P < .0001), and those for nuclear sclerosis of grade 4 or higher were 100.0%, 87.8%, and 87.8%, respectively (P = .007). The AL of mature cataract was measurable only with OCTB1 using the enhanced retina visualization mode. Although there were significant differences in parameters obtained on the three devices, there were no significant differences in postoperative refractive prediction errors.

Conclusions:
OCTB1 demonstrated the highest AL acquisition success rate and was able to measure AL even in eyes with dense or mature cataract. AS-OCTB using a wavelength of 1300 nm showed lower AL acquisition success rates compared to the other two devices probably due to reduced light transmission through the vitreous body.
A case of renal cell carcinoma with tumor thrombus extension into the right atrium
Authors: Whiting Adrian , Shah Nairuti , Zucker Jordan , Gill Manroop , Sachsenmeier Eliot , Singh Paramvir , Ahmed Kinza , Upadhyay Rutul , Bender Michael 
Published: December 2024

Introduction:
Over the last half-century, mortality from renal cell carcinoma (RCC) has seen a dramatic reduction, while 5-year survival rates have reached an all-time high (34% to 75%).

Case presentation:
A 77-year-old female with Stage 4 RCC (cT3c, cN1, cM1) presented with acute onset chest and back pain. Imaging revealed interval enlargement of a left renal mass with propagation of tumor thrombus (TT) throughout the left renal vein, intrahepatic and suprahepatic inferior vena cava (IVC) with extension into the right atrium (RA). The patient successfully underwent a high-risk open left nephrectomy with caval thrombectomy, retroperitoneal lymph node dissection, and atrial thrombectomy.

Discussion:
Approximately 1% of RCC cases involve the right atrium, and radical nephrectomy with vena caval thrombectomy remains the most effective treatment for cavoatrial TT, with 5-year survival rates between 30% and 72%. While patients with renal vein involvement have better survival rates than those with IVC involvement, advanced TT cases (Types III and IV) often require extracorporeal circulation. Though the patient understood the prognosis of her RCC, discussing the risks of a complex procedure versus not intervening was challenging. Despite a typical median survival of 12 months for level IV tumor thrombus (TT), she remains stable 28 months post-surgery.

Conclusion:
Although the five-year survival rate for renal cell carcinoma (RCC) has increased from 34% to 75%, the disease still adversely affects patients’ quality of life. A multidisciplinary approach is essential when managing metastatic RCC, particularly involving the heart. Despite the associated risks, surgical intervention is more effective in prolonging life by preventing sudden cardiac death due to embolic events.
The Impacts and Consequences of Sexually Transmitted Infections in the United States
Authors: Allan-Blitz Lao-Tzu , Klausner Jeffrey D. 
Published: December 2024

Abstract
Millions of people in the United States are affected by sexually transmitted infections (STIs) every year, with profound consequences for the individual, their community, and society at large. In this review, we aim to summarize the epidemiology of four STIs: C. trachomatis, N. gonorrhoeae, T. pallidum, and HSV, and to highlight the consequences of those infections among individuals and the healthcare system. Untreated N. gonorrhoeae, C. trachomatis, T. pallidum, or HSV infection can result in female infertility, stillbirth, premature birth, and low birth weight. As many as 10% of incident HIV infections among men who have sex with men in the United States have been attributed to either N. gonorrhoeae or C. trachomatis infection. In one year in the United States, incident C. trachomatis infection resulted in $824 million lifetime medical costs and a loss of 1,541 lifetime quality-adjusted life years (QALYs) among men and 111,872 among women, while incident N. gonorrhoeae infection led to $323 million in lifetime medical costs, and a loss of 386 QALYs among women and 12,112 among men. Incident T. pallidum infection in one year resulted in $206 million in medical costs and a loss of 13,349 QALYs among both men and women, while genital herpes led to $107 million in medical costs and a loss of 33,100 QALYs. STI-attributable infertility alone resulted in more than $190 million in direct medical costs. Cumulatively, STIs lead to substantial financial costs to individuals and the health system, as well as long-term reductions in quality of life.
18F-FDG PET/CT Revealed Bone Infarction as the Cause of Unexplained Fever
Authors: Chen Xueqi , Li Qian , Fu Zhanli 
Published: December 2024

Abstract
An 18F-FDG PET/CT was conducted on a 44-year-old man with a history of dermatomyositis and avascular necrosis of left femoral head, due to a fever of unknown origin. The scan revealed patchy and cloudy high densities within the medullary cavities of bilateral distal femur and proximal tibia, exhibiting peripheral high 18F-FDG avidity. Subsequent MRI confirmed bone infarction.
Cutaneous T-Cell Lymphoma Masquerading as Leishmaniasis Via 18F-FDG PET/CT
Authors: Singh Prakash , Khandelwal Yogita , Mishra Vineet , Yadav Shiwangi 
Published: December 2024

Abstract
Cutaneous T-cell lymphomas (CTCLs) characterized by infiltration of the skin of T-cell lymphocytes represent an uncommon and rare subset of extranodal non-Hodgkin lymphomas. Primary CTCL, not otherwise specified, is among the most important subtypes of CTCLs characterized by rapid cutaneous dissemination and systemic involvement. Herein, we present a case of primary CTCL, not otherwise specified, diagnosed via 18F-FDG PET/CT after initial misdiagnosis of cutaneous leishmaniasis.