bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quantum theory of orbital angular momentum in spatiotemporal optical vortices
Authors: Das Pronoy , Bharadwaj Sathwik , Jacob Zubin 
Published: July 2024

Abstract
Spatiotemporal Optical Vortices (STOVs) are structured electromagnetic fields propagating in free space with phase singularities in the space-time domain. Depending on the tilt of the helical phase front, STOVs can carry both longitudinal and transverse orbital angular momentum (OAM). Although STOVs have gained significant interest in the recent years, the current understanding is limited to the semi-classical picture. Here, we develop a quantum theory for STOVs with an arbitrary tilt, extending beyond the paraxial limit. We demonstrate that quantum STOV states, such as Fock and coherent twisted photon pulses, display non-vanishing longitudinal OAM fluctuations that are absent in conventional monochromatic twisted pulses. We show that these quantum fluctuations exhibit a unique texture, i.e. a spatial distribution which can be used to experimentally isolate these quantum effects. Our findings represent a step towards the exploitation of quantum effects of structured light for various applications such as OAM-based encoding protocols and platforms to explore novel light–matter interaction in 2D material systems.
Analysis and Evaluation of Earthquake Hazard Zones Based on Spatial Models for Regency Regional Development Bantul
Authors: Susri Nurhaci Dian , Setianto Agung , Wilopo Wahyu 
Published: July 2024

Abstract
Earthquakes are a natural disaster that occur frequently in Indonesia. A region susceptible to earthquakes is the Bantul district. Buildings and infrastructure could be damaged by this disaster, especially in highly populated metropolitan areas where the Bantul Regency earthquake (Mw 6.4) on May 27, 2006, resulted in significant damage.The purpose of this research is to identify the distribution of the region’s level of stability against the possibility of an earthquake occurring, as well as the degree of compatibility between the vulnerability zone and the Development Territory Unit (SWP) of Bantul district. This research uses data collection techniques by direct observation with microtremors to calculate surface peak ground acceleration (PGA) with a value of Vs.30. The regional stability weighting matrix approach is used in this study, which is governed by Minister of Public Works Regulation Number 21 of 2007 covering Guidelines for Spatial Planning in Volcanic Eruptions and Earthquake-Prone Areas. The research results for Bantul Regency have a distribution of Vs.30 values between 175 - 350 m/s which is included in the Soft Rock (SC) category with surface peak ground acceleration (PGA) values between 0.112 g - 0.418 g. The final score for Bantul Regency is 20 - 43 which falls into the stable and less stable categories. The Development Area Unit (SWP) of Bantul Regency SWP, which is in the unstable zone, is dominantly distributed around the Opak Fault. SWP II, III, IV, and V require mitigation measures when used for residential areas. Spatial planning that is in accordance with built-up and non-built zones will be able to reduce risk factors.
Landslide Susceptibility Mapping Using Weight of Evidence Method in the Purwanegara District and Surrounding Areas, Banjarnegara Regency, Central Java Province, Indonesia
Authors: Saniya Maharani Inas , Wilopo Wahyu , Hendrayana Heru 
Published: July 2024

Abstract
The research location is in the Purwanegara Subdistrict, Banjarnegara Regency, Province of Central Java. According to the Geological Agency of Indonesia, this location is a landslide-prone area, and many landslides occur yearly. Therefore, it needs a landslide susceptibility map is basic information for landslide mitigation in this area. The parameters used in this research are slope, lithology, distance from structural geology, distance from the river, land use, and rainfall. Using six parameters, the weight of evidence (WoE) method was used to develop a landslide susceptibility map. This research aims to make a zonation of landslide susceptibility in this area. The data were collected by field survey and visiting some related institutions. The landslide data used are 85 landslide events in the last three years. All data was then randomly divided into two groups: 70% as model data sets and 30% as validation data sets. The map of every parameter will be overlaid to create a landslide susceptibility zone. The Area Under Curve (AUC) method validated the final map. The result shows that landslide susceptibility zonation can be divided into four zones: very low susceptibility zone, low susceptibility zone, medium susceptibility zone, and high susceptibility zone. The very low susceptibility zone is mostly located in the north, the low susceptibility zone is mostly in the north and south, the moderate susceptibility zone is in the middle, and the high susceptibility zone is in the middle of the research’s location. The validation results of the success and prediction rates using the AUC method show an accuracy value of 0.86 and 0.82, respectively. According to the validation result, both can be classified as very good.
Mud Volcanoes and Adjacent Vegetation Adaptation in the Rembang Zone, Indonesia: An Approach for Mud Volcano Investigation
Authors: Sitinjak Eri S. , Harbowo D G. 
Published: July 2024

Abstract
The Rembang Zone is a physiographic zone located in the northern part of Java, Indonesia. Rembang zone includes the areas from Rembang to Tuban and reaches the island of Madura. Ten mud volcanoes were identified, each with varying levels of eruptive intensity. Locals have reported that newly erupted mud materials can disrupt soil fertility in the surrounding areas, leading to vegetation death. Interestingly, we discovered several types of vegetation at mud volcano sites that have adapted, survived, and supported vegetation succession in the surrounding areas. Therefore, in this study, we investigated the vegetation around mud volcanoes in the Rembang Zone and its mud characteristics. We employed Sankey diagram analysis to explore the adapted plant taxa at mud volcano sites in the Rembang Zone. Additionally, we assessed the substrate using Scanning Electron Microscopy (SEM) and conducted geochemical analyses on fluid and non-condensable gas using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Gas Chromatography Mass Spectrometry (GC-MS). The results of this study reveal that there are at least 10 potential mud volcano sites in the Rembang Zone that could be inhabited by vegetation from the Poaceae family (20%), Asteraceae (18%), Cyperaceae (15%), Fabaceae (13%), Euphorbiaceae (9%), and other plant families (2%). These plants tend to adapt to the mud volcano substrate composed of Fe (0.00-0.35 mg/L), Ca (2.9-0.16%), Na (0.02-23.7%), and Cl (13-74%). This demonstrates that vegetation around mud volcanoes in the Rembang Zone can adapt to high-salinity conditions. SEM observations revealed a high smectite content associated with limestone rock. The mud volcanoes frequently emit gases such as N2 (2.3-73%), CH4 (0-8.8%), and CO2 (17-95%), indicating a tendency to produce substrates with nearly water-boiling temperatures (45-105°C). These findings serve as a reference for further understanding the presence of vegetation around mud volcanoes, particularly for identifying the presence of other mud volcanoes through remote sensing.
Characteristics of Dioritic Intrusion at Kaligono Area, Kulon Progo Mountains, Indonesia: A Preliminary Study for Petrogenesis Implications
Authors: Dwi Astuti Nur , Dewi Titisari Anastasia , Idrus Arifudin 
Published: July 2024

Abstract
This study defines the characteristics of dioritic rock intrusion in the Kaligono area, Kulonprogo Mountains, Indonesia. Previous studies suggest the existence of porphyry deposit system in the mentioned area, hosted by the dioritic intrusion. According to the Geologic Map of Yogyakarta Quadrangle, age of the dioritic intrusion is the Miocene. Study of the intrusion characteristics is very important to gain a better understanding of the geological model associated with the deposit system. This preliminary study focused on determining petrogenesis of the dioritic intrusion. Methods carried out in this study were field data collection, petrographic analysis, and geochemical analysis using ICP-AES (Inductive Coupled Plasma-Atomic Emission Spectrometry) and ICP-MS (Inductively Coupled Plasma Mass Spectrometry) analysis. Petrography analysis showed that igneous rocks in this research area consist of dioritic rock with phorphyritic texture and oscillatory zoning. Based on its geochemical composition, the rock samples can be classified as diorite and granodiorite and calc-alkaline suites. These rocks are enriched in LILEs (Rb, Ba, Sr, and K) and depleted in HFSEs (Nb, Ti, Zr). In addition, REE shows a slight enrichment of light-REE and depletion of HREE. These patterns of the trace elements including REE show a typical pattern of calc alkaline arc. Petrographic observation and geochemical variation indicate that the magma has undergone fractional crystallization.
Geology of the Kebasen Paleovolcano in Banyumas Regency, Central Java Province, Indonesia
Authors: Taruna S Y , Setijadji L D , Akmaluddin  
Published: July 2024

Abstract
The new interpretation on geology of Kebasen district in Central Java, Indonesia which is located in the middle parts of Sunda Arc indicates the existence of a paleovolcano. This conclusion is achieved through 1:25,000 geological mapping with a focus on volcanic facies, characterization of lithology types, mineralogy, and fossil analysis, to clarify its volcanic history and paleo-environment. Laboratory analysis works on representative rock samples are done using petrography and fossil identification on calcareous sedimentary members. Our research results conclude that Kebasen paleovolcano was a composite volcano with a diameter of about 8 km, elongated in NW-SE orientation, with Kebasen city located at the SW rim of the old volcanic edifice. The volcanic history and resulting volcanic rocks consisted of two contrasting volcanic stages. The first one was explosive caldera-forming eruptions that produced thick and partly welded pyroclastic rocks, dominated by pyroclastic breccia at the lower parts and finer tuff members at the upper parts. After caldera-forming eruptions, volcanic activity was followed by effusive eruptions of basaltic to andesitic lavas that covered the caldera floor. The lavas have abundant pillow structures indicating a submarine environment, intermediate to basaltic composition, and porphyritic texture, with plagioclase and pyroxene as the most abundant phenocryst minerals. Available rock geochemistry data demonstrate that lavas have mafic to intermediate compositions, with magma affinity at the transition of calc-alkaline to tholeiitic series. Results of geomorphological and lithology association analysis conclude that the research area was part of the central to distal facies of a paleovolcano complex, with the paleo depositional environment in the open marine environment. The results of fossil analysis on calcareous sedimentary rocks between volcanic layers indicate that the age of volcanism was Early Pliocene (N18) with the paleobathymetry transitioning from upper-middle bathyal to outer–middle neritic, which were parts of the continental margin. It is concluded that Kebasen paleovolcano is a newly identified submarine caldera-type Pliocene volcano within the middle parts of the Sunda Arc in Central Java, Indonesia.
Transgression patterns of Muara Enim Formation at Tanjung Agung Village based on stratigraphic data measurements
Authors: Dwi Mayasari Elisabet , Hendra Amijaya Donatus , Akmaluddin  
Published: July 2024

Abstract
Muara Enim Formation is one of the formations which is composed in the South Sumatra Basin in the Late Miocene Epoch. It has a specific lithology which shows how the conditions of the depositional environment were the formation was deposited. The purpose of this research is to determine the pattern of transgression and regression of Muara Enim Formation. Transgression and regression patterns are used to determine how the shoreline moves. It is caused by the supply of sediment material. The finer sediment material is deposited and the smoother the movement of the material towards the land, showing the indication of transgression, and vice versa. This research uses analytical-interpretative as the method, which is using the result of sampling analysis and then interpreting how the pattern of transgression and regression are changed. This method is used to determine the physical properties of the lithology composing the Muara Enim Formation. Based on field observations on the Air Enim River, it is known that the Muara Enim Formation is composed of lithology dominated by fine grain size (claystone) to medium grain size (tuffaceous sandstone) with thin coal in several locations. Based on field outcrop (surface data) it is known that the claystone lithology is thickened to a younger layer (about 2.5 m thickness) with massive sedimentary structure. It is interpreted that the Muara Enim Formation was deposited in a transgression pattern in a depositional phase which was influenced by sediment supply factors and weak depositional currents.
Microfacies and Paleomire Reconstruction of Coal in the Tanjung Formation, Barito Basin, Kandangan Area, South Kalimantan
Authors: Sinabang P V P , Anggara F , Amijaya D H , Rahmat S B 
Published: July 2024

Abstract
The occurrence of the Tanjung Formation as a coal-bearing formation that has thick coals and is laterally distributed along in Barito Basin causes it to be well-known as one of the biggest coal-producing basins in Indonesia. The genesis of Eocene coal formed in terrestrial depositional environment influenced by freshwater and marine transgression is the uniqueness of this coal and interesting to examine maceral’s characteristic and its microfacies, and the evolution of paleomire seam AGM-B3, AGM-B4, AGM-B5, and AGM-B6 in Kandangan area by organic petrography’s analysis and coal’s chemical analysis. The result of subbituminous coal’s petrography show vitrinite is the most abundant maceral ranging from 56,.6% - 80.36% vol, liptinite (15.27% - 39.45% vol), inertinite (0.55% - 15.18% vol), and mineral matter (0.18% - 4.36% vol) which is dominated by pyrite.
Based on maceral’s assemblages, coal’s microfacies divided into four groups are (1) telovitrinite-rich group, (2) detrovitrinite-rich group, (3) telovitrinite-liptinite-rich group, (4) inertinite-rich group. The basal section of seam AGM-B6 is characterized by detrovitrinite-rich group while seam AGM-B3, AGM-B4, and AGM-B5 are characterized by telovitrinite-liptinite-rich group. The middle section only represented the inertinite-rich group in seam AGM-B3, and the top section of the coal seams, except AGM-B6, is typically represented by the telovitrinite-rich group. The vertical profile of paleomire evolution shows a repetition of topogenous mire changing into ombrogenous mire and then back to topogenous mire. The paleomire type developed includes wet forest swamp, forested peatlands, and intermittently dry forested swamp and the environmental conditions are telmatic. The correlation between paleomire’s type and coal maceral’s abundance in the Kandangan area reflects that the type of vegetation from woody plants that underwent high degradation, moderate gelification, and intensive oxidation processes triggered by a short dry season.
Signal to Noise Ratio Improvement Using Stacking Method on Shallow Refraction Seismic Data
Authors: Wijatmoko Bambang , Alfaridzi Raihan , Hendarmawan  , Rosandi Yudi 
Published: July 2024

Abstract
The improvement of signal-to-noise ratio in refraction seismic survey data is intriguing, especially when a long source-sensor distance and low energy vibration source is in use. In this work, we analyzed the effectiveness of the stacking procedure to extract geophone response signals buried under the noise level. The straight forward strategy to improve the signal quality is by doing multiple acquisition on every offset location and performing stacking procedure on the recorded data. For such activities, the sensor offset location is classified as near-offset (4-26m), middle-offset (28-50m) and far-offset (52-72m). To increase the usefulness of the proposed method, we developed the algorithm using an opensource programming language, and presented it in a step-by-step manner. We presented the procedure accompanied by the pre- and post- processing algorithm, consisting of seismic signal filtering and cross-correlation procedure in order to allow a precise determination of the first break time of the propagated seismic wave. The results give an overview on how to develop a seismic signal processing routine, as well as the possibility to improve the range of the refraction seismic instrumentation systems. The stacking procedure has a high level of significance for the middle offset. For the near offset the stacking procedure is not necessary, whereas for the far offset the large number of data is more important.
In vitro osteogenesis of hMSCs on collagen membranes embedded within LEGO®-inspired 3D printed PCL constructs for mandibular bone repair
Authors: van der Heide Daphne , Hatt Luan Phelipe , Wirth Sylvie , Pirera Maria E , Armiento Angela R , Stoddart Martin J 
Published: July 2024

Abstract
The field of bone tissue engineering aims to develop an effective and aesthetical bone graft substitute capable of repairing large mandibular defects. However, graft failure resulting from necrosis and insufficient integration with native tissue due to lack of oxygen and nutrient transportation remains a concern. To overcome these drawbacks, this study aims to develop a 3D printed polycaprolactone layered construct with a LEGO®-inspired interlocking mechanism enabling spatial distribution of biological components. To highlight its in vitro osteogenic potential, human mesenchymal stromal cells are cultured onto Bio-Gide® Compressed collagen (Col) membranes, which are embedded within the layered construct for 28 d. The osteogenic response is assessed through the measurement of proliferation, relevant markers for osteogenesis including alkaline phosphatase (ALP) activity, expression of transcriptional genes (SP7, RUNX2/SOX9) as well matrix-related genes (COL1A1, ALPL IBSP, SPP1), osteoprotegerin secretion. In vitro osteogenic differentiation results showed increased levels of these osteogenic markers, indicating the layered construct’s potential to support osteogenesis. In this study, a novel workflow of 3D printing a patient-specific LEGO®-inspired layered construct that can spatially deliver biological elements was successfully demonstrated. These layered constructs have the potential to be employed as a bone tissue engineering strategy, with particular focus on the repair of large mandibular defects.
Effect of heat treatment on microstructure of near-eutectic Al-Ni-Mn alloy, and determination of mechanical and thermoelectrical properties
Authors: Kaygısız Yusuf 
Published: July 2024

Abstract
This study examined the impact of solution heat treatment on the microstructure, mechanical characteristics, thermophysical properties, and electrical resistivity of an Al-Ni-Mn near-eutectic alloy. The investigation focused on varying temperatures and holding periods. The composition of the Al-Ni-Mn near-eutectic alloy system was chosen as Al-5.3%Ni-1.0%Mn (wt). In the non-heat-treated sample, the matrix phase (α-Al) is in equilibrium with the intermetallic Al9(Mn,Ni)2 and Al3Ni phases. The hardness value of the non-heat-treated sample (49.8 kg mm−2) increased to 70.1 kg mm−2 with 2 h of solution heat treatment at 570 °C and then 8 h of artificial aging at 180 °C. The hardness value increased by approximately 41%. TE: 651.81 °C for the non-heat-treated sample and TE:648.79 °C for the heat-treated sample. Fusion enthalpy (ΔH) value was determined as 336.79 (J g−1) for the non-heat-treated sample and 516.36 (J g−1) for the heat-treated sample. Heat Capacity (Cpl) value was found to be 0.364 J g−1.K for the non-heat-treated sample and 0.560 J g−1.K for the heat-treated sample. The electrical resistivity value of the 2 h’ solution heat-treated sample at 600 °C reached its highest value.
Key polynomials and preminimal pairs
Authors: Ershov Yu. 
Published: July 2024

The paper pertains to the theory of valued fields and is devoted to describing extensions of valuations to the field of rational functions in one variable. An efficient tool here is the notion of a key polynomial introduced by S. Maclane in 1936. With the use of the notion of a preminimal pair introduced recently, a new description of key polynomials over Henselian fields is found.
The Argument from Early Development (1)
Authors: Laurence Stephen , Margolis Eric 
Published: July 2024

Abstract
This chapter presents the first of our seven arguments for concept nativism—the argument from early development. Although this argument is often taken to be the quintessential argument for concept nativism, it is also frequently misunderstood. This chapter aims to clarify the logic of the argument and how it contributes to the overall case for our version of concept nativism. We do this by considering a selection of case studies, including the representation of faces and numerical quantity. This chapter focuses on how the argument from early development works in cases of representational abilities that are present at birth. While it may seem obvious that psychological traits that are present at birth should be taken to be innate, the link between being innate and being present at birth isn’t so simple. We explain why and how exactly the argument should be understood in light of these important complications.
The Argument from Universality
Authors: Laurence Stephen , Margolis Eric 
Published: July 2024

Abstract
This chapter presents the third of our seven arguments for concept nativism—the argument from universality. As in the previous chapters in Part IV, our discussion has a dual focus. It aims both to clarify the logic of the argument from universality and to use this argument to continue building the case for our version of concept nativism. The argument from universality has perhaps been the most central form of argument in the history of the rationalism-empiricism debate in philosophy. But it has also been widely misunderstood by empiricists from Locke to the present. This chapter addresses these misunderstandings by offering a fully developed account of how this argument works and by explaining exactly what type of support it can provide for concept nativism. The main case studies discussed focus on representations of geometrical properties, beliefs, death, and logical connectives (in particular, the concept or).
The Argument from Initial Representational Access
Authors: Laurence Stephen , Margolis Eric 
Published: July 2024

Abstract
This chapter presents the fourth of our seven arguments for concept nativism—the argument from initial representational access. Unlike the previous three arguments discussed in Chapters 8–11, this argument is relatively unknown. The central problem raised by the argument from initial representational access is to explain how a representational system that is restricted to a limited range of representational domains (e.g., to representing perceptual properties like shape, size, and colour) could break into a new foundational representational domain (e.g., come to represent time, or causality, or necessity). As in the previous chapters in Part II, our discussion has a dual focus. It aims both to clarify the logic of the argument from initial representational access and to continue building the case for our version of concept nativism. The main case studies discussed focus on representations of causation, belief, logic, modality, number, and time.