bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of stresses and fatigue life of the bolts of the briquetting press’s working system
Authors: Sołtysiak R 
Published: December 2024

Abstract
The working systems of the briquetting press machine are subject to loads that vary over time resulting from the briquetting process. The main components of these working systems have a specified fatigue life and after working a certain number of hours, they are destroyed and in order to continue using the briquetting press machine, these parts must be replaced with new ones. For example, when it comes to the fatigue life of the compacting sleeve, briquetting press manufacturers most often specify the minimum durability of 2 000 hours in the technical documentation of the machine. However, these are not the only elements that are subject to fatigue damage. For example, the bolts that fasten the hydraulic compacting system in order to increase the density of the produced briquettes play a very important role. This paper presents a hybrid method of calculating bolts used in an example operating system of a briquetting press machine. The calculations include, among others, determining the forces in the bolts using standard formulas, as well as mapping the shape of the existing briquetting press’s working system in the CAD program and carrying out FEM calculations to determine the stresses, among others, in the bolts. Taking into account the calculated stress ranges and the “Eurocode 3: Design of steel structures - Part 1-9: Fatigue” standard, the fatigue life of the bolts was determined. The use of the calculation procedure presented in this paper will enable future designers to select bolts for a specific fatigue life.
Magnetic Basement Modeling at Karimata Strait Using MagB_Inv
Authors: Ramadhani R A , Bijaksana S , Fajar S J , Alifna R , Ibrahim K , Suryanata P B , Harlianti U 
Published: December 2024

Abstract
Indonesia is a country with abundant natural resources, such as tin, which is associated with granite rocks. Granite can be found under sedimentary rocks as basement rock. The depth of the magnetic basement will provide a value that indicates the location or presence of granite rock. This research is expected to be possible to identify the depth of the magnetic basement in the Karimata Strait area and obtain a relationship between the results of magnetic basement modeling using the MagB_Inv program and the regional geological structure in the Karimata Strait area. Based on magnetic anomaly data used, digitization was carried out to obtain contour maps using ArcMap and gridding using Oasis Montaj. Then do the calculation of the average depth estimate using the Radially Averaged Power Spectrum (RAPS) and magnetic basement modeling using MagB_Inv. Depth values that vary from 3.2 to 6.3 km, with average of 4.5 km, indicate significant undulation in the west-east direction. Meanwhile, in the north-south direction, the depth undulation tends to be less significant. According to geological modeling, there is an indication of a basin known as the Bangka Basin, and the magnetic basement in the study area is granite.
Numerical simulation of convective closed-loop geothermal heat extraction from an idle geothermal well in eastern Indonesia
Authors: Brilian Vincentius A. , Khasani  , Adityatama Daniel W. , Tanbar Fefria 
Published: December 2024

Abstract
A geothermal resource typically experiences a production decline caused by exploitation activities. Once the power generation from the resource reaches its subeconomic threshold, the production activities might be abandoned, and the production wells are converted into idle wells. However, idle geothermal wells still have thermal energy from the geofluid inside the wellbore that could be extracted to extend the economic lifetime of the well. In this study, a convective closed-loop geothermal (CLG) heat extraction system from an idle geothermal well is developed. It is performed through numerical simulation using COMSOL to calculate and optimize the rate of heat extraction. Convective CLG systems offer the advantage of having higher heat transfer rates than conductive CLG systems in hot dry rocks. In the numerical model, a hypothetical idle geothermal well is created based on the typical conditions of geothermal fields in eastern Indonesia with a depth of 500 m and a bottom hole temperature of 190°C. A closed-loop coaxial borehole heat exchanger (BHE) is inserted into the wellbore to extract the geofluid’s heat by injecting water as the working fluid into the BHE’s annulus. The numerical model results suggest that the optimized BHE could extract up to 185.48 kW of thermal energy.
Thermodynamic Analysis of Organic Rankine Cycle Systems for Small Scale Power Plants Using Low Enthalpy Fluids with Aspen Hysys V8.8 Simulation Software
Authors: Herianto  , Asmorowati Dewi 
Published: December 2024

Abstract
Failed geothermal exploration wells can be used as mini power plants with a binary organic rankine cycle system. The FA-2 well was chosen as the research object because it has a temperature of 102 °C and a pressure of 8 bar which can use a low enthalpy turbine. The methodology of this paper includes several stages in utilizing unproductive exploration wells as small-scale power plants with organic rankine cycle systems, which include brine fluid analysis, selection of working fluids, simulation of thermodynamic processes with Hysys V8.8 software. The working fluid that has been heated in the heat exchanger moves to the turbine to generate electricity. For this case, propane was chosen because under the pressure conditions in the heat exchanger, propane can still pass its critical temperature until it becomes superheated. The thermodynamic cycle planning starts from the outlet of the feed pump and uses pressure and temperature assumptions to make it easier to understand. By using propane working fluid, it is hoped that the optimum output of electrical power will be obtained.
Evaluation of Settling Pond For Handling Coalmine Wastewater at Jetty of Kertapati, PT Bukit Asam Tbk, Palembang, South Sumatera
Authors: Citra Dewi M , Waylani A , Suparno  , Les Sihombing A P 
Published: December 2024

Abstract
PT Bukit Asam Tbk Kertapati is a coal loading and unloading place and a coal stockpile. Before coal is loaded onto a barge or vessel, coal will usually be in the stockpile. The condition of the stockpile is in an open place that is directly related to weather conditions, especially when it rains. Coalmine wastewater is generated from the mining industry, coal processing, operational activities, and rainwater runoff. The contents in the coalmine wastewater include Total Suspended Solid (TSS), an increase in the degree of acidity resulting in a decrease in the pH value of the water, and the presence of metal content (Fe) and manganese content (Mn). The management of coalmine wastewater must be carried out by providing a setting pond and adequate coalmine wastewater management facilities, including drainage channels and coalmine wastewater treatment systems, to achieve efforts to protect the environment. The final result of wastewater disposal is the quality standards set by the local government. The drainage channel owned by PTBA Kertapati is trapezoidal with different lengths and dimensions, with an area owned by PTBA Kertapati of 6.4 ha divided into three catchment areas, including catchment area one with an area of 2.9 ha will be channeled to Settling Pond A, with the length of the drainage channel divided into three parts and different maximum channel discharge. Furthermore, catchment area two, with an area of 1.3 ha, will be channeled to Settling Pond B with a drainage channel length of 290 m, while catchment area three, with an area of 2.2 ha, will be channeled to settling pond C with a drainage channel length of 660 m with different maximum channel discharge. Settling Pond is one of the mine support facilities that functions as a shelter and a place for managing coalmine wastewater until the water has met environmental quality standards before flowing into the Musi River. Therefore, there is a need for optimal handling in the management of coalmine wastewater to reduce TSS values and normalize pH in settling pond by using alum and lime to meet the environmental quality standards of wastewater at PT Bukit Asam Tbk Kertapati Palembang.
Simulation study analysis of the normal five-spot model and inverted five-spot polymer injection on X field
Authors: Hadita Aflian , Dwi Amelia Putri Veni , Muharto Ruri , Erfando Tomi 
Published: December 2024

Abstract
Increasing oil production has become the main focus in the oil and gas industry, so various methods are needed to increase oil recovery after production has decreased, one of which is polymer injection. The X field is located in Indragiri Hulu Regency. It has passed the secondary recovery stage, with an estimated oil-in-place reserve of 328,542.4 MSTB, recoverable reserve of 170,426.5 MSTB, recovery factor of 51.9%, and cumulative oil production of 135,856.8 MSTB. One of the activities that need to be carried out in chemical injection is to choose the right and efficient production-injection well pattern to be applied in the field. Therefore, a reservoir simulation study compared the normal and inverted five-spot patterns using variations in polymer concentrations of 500ppm, 1000ppm and 1500ppm and injection rates of 4000bpd, 5000bpd and 6000bpd. This study aims to determine the best scenario based on the largest oil recovery factor that can be applied to the X Field by looking at the cumulative change in oil obtained and the water cut. The simulation results show that the maximum cumulative oil value in the inverted five-spot model with a concentration of 1500 ppm and an injection rate of 6000 bpd is 69757.4 bbl, and the minimum water cut value in the inverted five-spot model with a concentration of 1500 ppm and an injection rate of 6000 bpd is 94.81 %. While the maximum value of cumulative oil in the normal five-spot model with a concentration of 1500 ppm and an injection rate of 6000 bpd is 310241bbl, and the minimum water cut value in the normal five-spot model with a concentration of 1500 ppm and an injection rate of 6000 bpd is 92.78%. This study shows that the higher the polymer concentration used, the higher the cumulative oil increase, followed by the higher water cut reduction, so the selection of the right polymer concentration is very important to increase oil recovery in the X field.
Tool, Collaborator, or Participant: AI and Artistic Agency
Authors: Cross Anthony 
Published: December 2024

Abstract
Artificial intelligence is now capable of generating sophisticated and compelling images from simple text prompts. In this paper, I focus specifically on how artists might make use of AI to create art. Most existing discourse analogizes AI to a tool or collaborator; this focuses our attention on AI’s contribution to the production of an artistically significant output. I propose an alternative approach, the exploration paradigm, which suggests that artists instead relate to AI as a participant: artists create a space for interaction with the AI algorithm by way of their prompts, thereby allowing them to explore the way that the algorithm ‘sees’ and ‘represents’. AI art practised in this fashion bears a striking resemblance to contemporary conceptual and participatory art. Viewing AI art in this way has implications for the appreciation of style in AI art; concerns about novelty and originality; and the assignment of artistic credit and copyright.
Geographic disparities impacting oral vaccine performance: Observations and future directions
Authors: Burke Rachel M , Ramani Sasirekha , Lynch Julia , Cooper Laura V , Cho Haeun , Bandyopadhyay Ananda S , Kirkwood Carl D , Steele A Duncan , Kang Gagandeep 
Published: December 2024

Abstract
Oral vaccines have several advantages compared with parenteral administration: they can be relatively cheap to produce in high quantities, easier to administer, and induce intestinal mucosal immunity that can protect against infection. These characteristics have led to successful use of oral vaccines against rotavirus, polio, and cholera. Unfortunately, oral vaccines for all three diseases have demonstrated lower performance in the highest-burden settings where they are most needed. Rotavirus vaccines are estimated to have &gt;85% effectiveness against hospitalization in children &lt;12 months in countries with low child mortality, but only ~65% effectiveness in countries with high child mortality. Similarly, oral polio vaccines have lower immunogenicity in developing country settings compared with high-resource settings. Data are more limited for oral cholera vaccines, but suggest lower titers among children compared with adults, and, for some vaccines, lower efficacy in endemic settings compared with non-endemic settings. These disparities are likely multifactorial, and available evidence suggests a role for maternal factors (e.g. transplacental antibodies, breastmilk), host factors (e.g. genetic polymorphisms—with the best evidence for rotavirus—or previous infection), and environmental factors (e.g. gut microbiome, co-infections). Overall, these data highlight the rather ambiguous and often contradictory nature of evidence on factors affecting oral vaccine response, cautioning against broad extrapolation of outcomes based on one population or one vaccine type. Meaningful impact on performance of oral vaccines will likely only be possible with a suite of interventions, given the complex and multifactorial nature of the problem, and the degree to which contributing factors are intertwined.
The Concept of International Law Reform and the Case of Negotiated Settlements in Foreign Bribery Matters
Authors: Ivory Radha 
Published: December 2024

Abstract
The concept of reform is present in its absence in the literature on international law-making and legal theory. The international legal system is subject to pressures for change. Its actors respond to those pressures with projects for legal improvement. Scholars comment on those malfunctions and attempted fixes, some elaborating general frameworks for appraisal, others conceiving of transnational law-making processes and yet others deconstructing the very discourse of international legal progress. However, as a group, international lawyers have baulked at the concept of reform. That aversion has been attributed to our discipline’s defensive posture and the international legal system’s lack of machinery for efficiently replacing outdated principles and rules. ‘Reform’ implies an admission of deficit and an orderly and authoritative change process that would not seem to be in keeping with typical pathways of legal change beyond the state. This article seeks to reverse that trend by proposing a two-part concept of international law reform. The procedural part of this concept enables legal scholars to discern and describe instances of quasi-legislative change in the international legal space. The substantive part prompts them to select and apply criteria for assessing the merits of a particular textual change or proposal. The resultant concept of international law reform is necessary, I argue, in a legal system that lacks centralized legislative processes and comprehensive rules for demarcating and legitimating authoritative normative developments. Through a detailed case study from international anti-corruption law, the article shows how international law reform is an essential framework for analysis.
Geocultural Power in the Red Sea Region
Authors: Bachmann Jan , Ashagrie Bizusew , Kuyumcuoğlu Ozan , Schierenbeck Isabell 
Published: December 2024

Abstract
In this research note, we argue that traditional geopolitical and geoeconomic arguments that seek to make sense of growing engagements between countries of the Middle East and the Horn of Africa often ascribe little significance to notions of culture and history that underpin the narratives of collaborations that have developed across the Red Sea. To address this shortcoming, we turn to the concept of geocultural power—understood as the mobilization of cultural and historical attributes, both symbolic and material, in the pursuit of foreign policy agendas—as a particularly useful heuristic for making sense of the wealth of historical and cultural claims invoked in foreign policymaking in the Red Sea region. We illustrate the utility of the concept through a short discussion of geocultural narratives related to Ethiopia's shifting relations with the Gulf States and Turkey's increasing engagement in the Horn of Africa. While the research note's primary contribution is to outline a research agenda for using the lens of geocultural power, we also argue that states are not the sole arenas in which geopolitical claims are formulated. Hence, future studies should examine how geocultural claims encounter affirmation, contestation, and subversion in different societal arenas.
Light limitation enhances microbiome competitiveness and reduces microbial network stability in coastal waters
Authors: Wang Can , Wang Hualong , Zhang Chuyu , Liu Feilong , Lian Kaiyue , Li Yi , Zhang Honglei , Wang Bo , Liu Qian , Kan Jinjun , McMinn Andrew , Wang Min 
Published: December 2024

Abstract
Light plays a crucial role in microbiomes, maintaining the amount and transfer of primary productivity and directing ecosystem functioning. Coastal microbiomes are frequently exposed to light-limited conditions, but how their community organization is affected remains unclear. This study aimed to investigate the assembly, association and functional activity of coastal microbiomes (both prokaryotes and eukaryotes) in response to low light. Results presented here show that light limitation reduces the diversity, phylogenetic distance and niche breadth of microbiomes and increases dispersal limitation, especially for microeukaryotes. A reduced proportion of photosynthetic microbes under light-limited conditions, suggests that decreased primary production and carbon input would further alter microbial composition and physiology. Reduced microeukaryotic diversity could enhance the influence of deterministic processes on the community assembly of microbiomes under light-limited conditions. Under light-limited conditions, deterministic processes structure the assembly of microeukaryotes, whereas the assembly of prokaryotes is mostly driven by stochastic processes. Light limitation weakens prokaryotic relations and intensifies microeukaryotic relations. Compositional and functional inefficiency and inefficient element cycling across microbial loops ultimately destabilize the light-limited ecosystems. The metatranscriptomic analysis identified that light deprivation reduces the expressions of genes involved in photosynthesis, nutrient utilization, oxidative phosphorylation, and biosynthesis of antibiotics, but enhances the expressions of genes related to the secretion system, purine metabolism and the citrate cycle. These results provide important insights into how microbiomes alter their composition and co-occurrences in light-limited environments.
Control of coffee canker associated with Pseudomonas coronafaciens pv. garcae using a cocktail integrating two virulent polyvalent bacteriophages encapsulated in nanoparticles: in planta studies
Authors: Silva Erica C , Rodrigues Lucas M R , Destefano Suzete A L , Guerreiro Filho Oliveiro , Braghini Masako T , Baldo Denicezar Â , Oliveira José M , Vila Marta M D C , Balcão Victor M 
Published: December 2024

Abstract

Aims
In this study, we report the use of two novel lytic polyvalent phages as a cocktail in in planta assays and their efficacy in the control of bacterial halo blight (BHB) caused by Pseudomonas coronafaciens pv. garcae (Pcg) in coffee plants.

Methods and results
Phages were isolated from samples of coffee plant leaves collected at two different locations in Brazil. Both phages belong to the class Caudoviricetes and present myovirus-like morphotypes, and both exhibited specificity to their host, Pcg strain IBSBF-158. The two phages were encapsulated in chitosan-coated Ca-alginate nanoparticles, which demonstrated promising performance, promoting reductions in disease severity ranging from 66.83% to 83.37%, depending on the timing of application relative to infection. Both phages were somewhat susceptible to the effects of abiotic factors when in free form, with solar radiation seriously negatively impacting their lytic activity. However, nanoencapsulation of both phages as a lytic cocktail within chitosan-coated Ca-alginate nanoparticles proved successful in fully stabilizing both phages from the deleterious action of UV radiation.

Conclusions
Application of such lytic nanoparticles in pre- and post-inoculated coffee seedlings in in planta greenhouse assays proved successful in controlling the phytopathogen responsible for BHB of coffee, Pcg, with a significant decrease in the progression of the disease. The results suggest that lytic nanoparticles may become an effective and sustainable strategy for coffee BHB control, as an alternative to conventional approaches relying on chemical (copper hydroxide or oxychloride or kasugamycin hydrochloride) or biological agents, but more studies are needed in the field to confirm this. The phage protection system developed represents a potential alternative treatment for bacterial plant diseases with minimum damage to the environment.
New insights into the origin and phylogeny of Niphargidae (Crustacea: Amphipoda), with description of a new species and synonymization of the genus Niphargellus with Niphargus
Authors: Stoch Fabio , Citoleux Jacques , Weber Dieter , Salussolia Alice , Flot Jean-François 
Published: December 2024

Abstract
The intriguing origin and distribution of subterranean amphipods of the family Niphargidae, particularly in north-western Europe and the British Isles, were heavily influenced by Pleistocene glaciations, which obscured most ancient events. The discovery of a new species in Brittany (described herein as Niphargus quimperensis sp. nov.) that is closely related to two tiny endemic species of the British Isles (one ascribed to the genus Niphargus and the other to Niphargellus), along with further collection of specimens of Niphargellus in Europe, allowed the construction of a comprehensive molecular phylogeny and a new time-calibrated tree of the family Niphargidae.
The discovery of Niphargus quimperensis sp. nov. confirmed the position of its clade as sister to all other niphargids. Moreover, phylogenetic analysis demonstrate that the genus Niphargellus is polyphyletic and must be treated as a junior synonym of Niphargus. Finally, we propose that the colonization of continental freshwater by the marine ancestors of Niphargus may have occurred in north-western Europe during the opening of the North Atlantic in the Late Cretaceous, whereas the split of Niphargus quimperensis sp. nov. from the other representatives of its clade may have been related to the isolation of Brittany from the British Isles in the Early Miocene.