bluuebunny/crossref_metadata_2025_split huggingface dataset:
Das Paradies der Totalität: Gesamtheitstendenzen, Nominalismus und die (Anti-)Logik der Abstraktion in Hilberts Programm und dem Dadaismus
Authors: Hedley Tom 
Published: December 2024

Aufbauend auf den jüngsten Entwicklungen in der Forschung zu disziplinübergreifenden Modernismen im frühen 20. Jahrhundert positioniert dieser Artikel die zentralen Maximen des totalisierenden Gesamtkunstwerks als eine mögliche Grundlage für eine vergleichende Analyse des deutschen Dadaismus und der modernen Mathematik. Der Artikel plädiert für die Notwendigkeit, über explizite thematische Diskussionen der Mathematik in der Literatur der Moderne hinauszugehen, und identifiziert zunächst eine Berücksichtigung von Fragen zur möglichen Gesamtheit und Totalität in der modernen Mathematik – hier verkörpert durch David Hilberts formalistisches‚ Programm‛ der frühen 1900er Jahre –, als eine robustere strukturelle Parallele zu einer Strömung der Avantgarde-Kultur, die mit dem Gesamtkunstwerk verbunden ist. Dieses gemeinsame Anliegen der Totalisierung wird dann zum Ausgangspunkt für die Untersuchung der Übereinstimmung der Methoden, die in beiden Bereichen eingesetzt werden, um diesem utopischen Ziel einer absoluten, autonomen und einheitlichen Praxis zu dienen. Insbesondere mit Blick auf Ernst Cassirers Studien zu Logik und Abstraktion in Substanzbegriff und Funktionsbegriff (1910) wird argumentiert, dass die axiomatischen, nominalistischen Methoden der mathematischen Moderne in der antilogischen, antisystematischen Welle des Dadaismus der späten 1910er und frühen 1920er Jahre einen unwahrscheinlichen Verbündeten finden. Kurz gesagt, der deutsche Dadaismus und die moderne Mathematik ähneln sich in ihren programmatischen Ambitionen und in den Werkzeugen, die zur Umsetzung dieser Ambitionen eingesetzt werden. Es ist daher zu hoffen, dass diese lokalisierte, disziplinübergreifende Untersuchung am Ende Licht auf mögliche Wege zu einem mathematisch umfassenderen Verständnis der Moderne und der Avantgarde-Kultur im weiteren Sinne wirft.
Exploring the Gravitational Impact of Spring Tides on Earthquake Occurrence in Central Asia
Authors: Nekrasova Anastasia , Danabayeva Aigul , Katubayeva Assel 
Published: December 2024

Abstract
In this study, we analyzed variations in seismic activity in relation to the syzygy of the Sun, Moon, and Earth, corresponding to the semilunar or spring tide (ST) cycle. We focused on two regions within the Central Asian Orogenic Belt: the North Tien Shan region (NTSR) and the Xinjiang Uygur tectonic province (XUTP), using data from two regional earthquake catalogs. For the NTSR, we used data from the Seismological Experimental and Methodical Expedition in Almaty, Kazakhstan, covering 1 January 1970 to 31 July 2022. For the XUTP, we utilized data from the Data Management Centre of China National Seismic Network at the Institute of Geophysics China Earthquake Administration, spanning 1 January 1987 to 30 June 2019. We applied the nonparametric Kuiper’s test to evaluate cyclic variations in seismic activity, focusing on different magnitude thresholds in the regional catalog. For both regions, the original catalog as well as the catalogs of mainshocks and aftershocks were analyzed. The nearest-neighbor declustering method was employed to decompose the seismic catalogs. Kuiper’s test statistics revealed varying trends in the occurrence times for mainshocks and aftershocks during ST cycles. The test showed “the good-to-fit” to a uniform distribution for the timing of mainshocks within the ST cycle. Kuiper’s test revealed notably consistent trends in aftershock occurrence times during ST cycles with a significance level α of 0.001 or less in both regions analyzed. These results suggest a potential correlation between aftershock activity and the gravitational effects of the ST cycle. The most substantial decrease in aftershocks occurs during the micromoon ST cycle, when the distance between the Moon and the Earth exceeds 400,000 km.
Direct Waveform Inversion for Irregularly Layered Media
Authors: Liu Zhonghan , Zheng Yingcai , Zhou Hua-Wei , Hu Hao 
Published: December 2024

Abstract
Full waveform inversion is based on iterative perturbation approaches and often encounters convergence problems when the global initial model is far from the true model. As an alternative solution, our direct waveform inversion (DWI) can accurately invert for the acoustic properties of layered media without requiring a global initial model and furthermore DWI convergence is unconditional. However, previous studies of DWI focused only on inverting 1D horizontally layered media using incident plane waves. Its performance in higher dimensions is yet to be evaluated. Now, we have developed a new DWI scheme designed to invert for 2D irregularly multilayered acoustic media using point-source data. Leveraging the advantages of boundary integral equations in handling irregular layer boundaries, we derived a new wavefield representation and implemented it in our 2D DWI. We incorporated a localized imaging and inversion process for determining the geometries of the irregular interfaces. Similar to our previous 1D DWI, our new 2D DWI explicitly enforces the time–space causality property of the wavefields, retaining the key advantage of not requiring a global initial model and avoiding local minimum and cycle-skipping pitfalls. We tested our 2D DWI on two irregular layered models using explosive point sources. The results confirm that our 2D DWI can effectively and accurately invert for P-wave velocities as well as irregular subsurface geometries.
PERFIL EPIDEMIOLÓGICO DAS INTOXICAÇÕES MEDICAMENTOSAS NOTIFICADAS AO SUS, NO ESTADO DO TOCANTINS, REFERENTES AO BIÊNIO 2021-2022.
Authors: Pereira Castro Camilo Ana Beatriz , Alves de Castro Neto Antônio 
Published: December 2024

INTRODUÇÃO: Define-se intoxicação medicamentosa como uma síndrome tóxica provocada por dose de medicamento acima da terapêutica, seja por meio da injeção, inalação, ingestão ou contato com a pele e mucosas. É um efeito medicamentoso dose-dependente, que varia conforme a predisposição individual do usuário e com as várias interações enzimáticas de indução ou inibição metabólica da droga. Os envenenamentos não intencionais resultam, principalmente, da inadequação do uso, automedicação, rotulagem incorreta do fármaco, desatenção à bula e erros de posologia por profissionais. Já os intencionais têm como causa primordial o suicídio. METODOLOGIA: Estudo documental retrospectivo, com abordagens quantitativas e descritivas, realizado por meio da análise secundária do banco de dados do DATASUS e do SINITOX, sendo a população delimitada pelas intoxicações medicamentosas no biênio 2021-2022, no Estado do Tocantins, notificadas ao Sistema Nacional de Informações Tóxico-Farmacológicas – SINITOX. RESULTADOS: Durante esse período, 3601 casos de intoxicação exógena foram registrados, sendo mais prevalente a medicamentosa, responsável por, aproximadamente, 46,1%. Destes registros, 2250 ocorreram no sexo feminino, correspondendo a 62,5%. CONCLUSÃO: Dos 1662 casos totais de intoxicação medicamentosa, 760 ocorreram com a combinação das variáveis: sexo feminino, faixas etárias de 15 a 19 e 20 a 39 anos, e motivadas por tentativa de suicídio. Vale ressaltar a dificuldade em notificar e intervir nas intoxicações, devido uma facilidade de acesso aos fármacos e falha perante as políticas de vigilância sanitária e ao uso racional de medicamentos.
Completion and Stimulation Design Evolution in Tight Chalk Formations in Offshore Norway
Authors: Nozaki M. , Zwarich N. R. , Burton R. C. , Prosvirnov M. , Ruysschaert R. , Habib M. A. , Johnson L. A. 
Published: December 2024

Summary
Lower completion and acid stimulation designs for low-permeability chalk formations in a series of North Sea fields were modified from historical/legacy approaches to improve well performance for both production and injection purposes. The modifications included (1) a stimulation change from high-rate matrix acidizing to acid fracturing and (2) optimization of ball-activated sliding sleeve designs. The improvement in well performance was validated by actual productivity comparisons to offset wells. Further improvements are being developed for future extended reach wells.
A ball-activated sliding sleeve completion was chosen for a new series of improved horizontal well completions. Sleeve spacing, the number of sleeves, and port sizes were subsequently optimized for targeted stimulated lateral lengths by pipe flow modeling and limited-entry design methods. Optimization of acid fracturing designs was achieved after incorporating critical findings from various laboratory tests including rotating disk tests, acid-etched fracture conductivity tests, and gel shear history simulator tests. The new acid fracturing treatment designs were generated with the help of numerical simulations that were continuously fine-tuned based on new observations made during treatments and rigorous analysis of bottomhole injection pressures during the treatment.
As a result of the lower completion design optimization process, different-size nozzles were introduced into the sliding sleeves to treat up to five sleeves per stimulation stage with effective, limited-entry, fluid diversion. This allowed (1) use of available pumping weather windows effectively in the often-challenging North Sea offshore environment, (2) reducing or eliminating time-consuming wireline perforation runs, and (3) limiting acid exposure to mitigate ball/seat zonal isolation loss events (i.e., dissolvable balls were not always compatible with acid). The new and improved acid fracturing design enabled a reduction of the number of gel/acid cycles from five to three, which reduced stimulation cost without losing stimulation effectiveness. The new design also resulted in productivity enhancements depending on the well location within the structure. The largest performance improvement was observed in wells that were placed farther downflank, where stronger reservoir rock and lower permeabilities were found. These wells required a more intensive acid fracturing treatment to generate economical and sustainable production rates. Finally, wells that used the new stimulation techniques also tended to require a lower restimulation frequency.
This type of analysis work has not been presented previously and it optimizes lower completion for acid fracturing stimulation on a well-by-well basis. Further improvement is expected as stimulation designs and completion technology continue to evolve.
Optimizing Well Trajectories for Enhanced Oil Production in Naturally Fractured Reservoirs: Integrating Particle Swarm Optimization with an Innovative Semi-Analytical Model Framework
Authors: Shu Jin , Han Guoqing , Yue Zhenduo , Cheng Lei , Dong Ya , Liang Xingyuan 
Published: December 2024

Summary
Well trajectory optimization is a crucial component in the drilling engineering of naturally fractured reservoirs. The complex heterogeneity and anisotropy of such reservoirs significantly affect the pressure drop distribution within the well and, consequently, the oil well’s output, impacting the economic benefits of the well. Therefore, optimizing the well segment trajectory is key to efficient reservoir development. However, traditional well trajectory optimization methods primarily focus on geological structures and drilling engineering costs, often overlooking future production benefits of the oil well. This paper proposes a new method that first establishes a semi-analytical production prediction model capable of describing complex well trajectories. Although the semi-analytical model has unique advantages in well trajectory description, it typically treats the reservoir as a homogeneous entity, which complicates handling complex reservoir characteristics. To overcome this limitation, we combined optimization algorithms and neural networks to construct a framework for addressing reservoir heterogeneity (Semianalytical Model Framework for Unconventional Wells in Heterogeneous Reservoirs, USAMF-HR), enhancing the semi-analytical model’s ability to describe reservoir heterogeneity. Building on this framework, we applied the particle swarm optimization (PSO) algorithm and introduced constraints on the rationalization of initial well trajectories, as well as limits on particle movement speed and displacement, with the maximization of net present value (NPV) as the objective function, to optimize well trajectory coordinates. Through specific case analysis, the reasonableness and practicality of this method have been verified. The results show that this method can quickly and effectively plan the optimal well trajectory, significantly increasing productivity while reducing costs.
Study of Sand Transport in a Horizontal Pipeline Using Validated Computational Fluid Dynamics Simulations with Experimental Fiber-Optic Distributed Acoustic Sensing Data
Authors: Shetty R. , Tyagi M. , Sharma J. 
Published: December 2024

Summary
Sand management in wellbores is a significant challenge in the industry, notably impacting equipment integrity and operational safety—particularly in offshore oil and gas operations affected by the onset of sand production along with hydrocarbons. Recent advancements in fiber-optic sensing, especially through distributed acoustic sensing (DAS) experimental data, have enabled the continuous monitoring of sand ingress and migration. In this study, we use computational fluid dynamics (CFD) to accurately model sand transport by validating the simulations against the DAS data in a 40-ft-long, 2-in.-diameter experimental flow loop. The validation and verification (V&V) process demonstrates the CFD model’s accuracy in both steady-state and transient conditions, through predictions of key flow parameters such as sand slip velocity, sand concentration profiles, and sand arrival times against published experimental data, as well as verification of CFD methodology against similar simulation studies. Next, we used the CFD model to simulate the fiber-optic experimental DAS data for sand slurry transport in a pipe through an injection port with conditions of carrier fluid velocity = 0.93 m/s and dispersed phase (sand) particle diameter of 300 µm at a concentration of 0.001 v/v. To address uncertainties during sand production, a parametric study under transient conditions was conducted with varying boundary conditions in the CFD model. It examined fluid flow velocities at both 0.53 m/s and 0.93 m/s, below and above the critical settling velocity of the sand respectively, and the effects of varying sand particle diameters (125 µm and 600 µm).
Our research represents a significant advancement in sand management strategies, offering a robust and cost-effective tool for simulating real-world scenarios to improve operational efficiency. By providing detailed insights into flow dynamics and enabling robust predictions across various conditions, this study contributes substantially to advancing sand management strategies that could effectively mitigate operational risks and optimize sand transport in real time.
Effect of Atriplex halimus Leaf as Ecofriendly Surfactant for Demulsification of Water in Crude Oil Emulsion
Authors: Djemiat Djamal Eddine , Bouleghlem Hocine , Djemli Amar , Zoukel Abdelhalim , Ait Merzeg Farid , Berini Mohamed Rafik , Benmounah Abdelbaki 
Published: December 2024

Summary
Water-crude oil emulsion causes challenges, which the petrochemical sector solves using efficient, ecologically friendly, and cost-effective demulsifying chemicals. With this work, we aim to solve the problem of the presence of water in Algerian oil after it has left the producing well by adding a natural material, widely used in the country, as an environmentally friendly demulsifier. Atriplex halimus L. leaf ATP powder (ATP-P) and leaf extract (E-ATP) were studied. We first characterized the two biosurfactants ATP-P and E-ATP by attenuated total reflectance (ATR), X-ray diffraction (XRD), and thermogravimetry analysis (TGA). The effect of ATP-P and E-ATP on the emulsion (water/oil) was studied by Fourier transform infrared spectroscopy (FTIR) analysis, microscopic, rheological behavior, interfacial tension (IFT), and bottle tests. The results obtained show the ability of the two biosurfactants E-ATP and ATP-P to separate water, with water separation reaching 99% in 30 minutes with 500 ppm of E-ATP, while ATP-P separates 98% in 92 minutes. The mechanism of action of the two compounds as biodemulsifiers can be traced back to the rheological study, which showed a 33% reduction in emulsion viscosity at 500 ppm; ATR-FTIR analysis also shows the disappearance of carbon-carbon and carbon-oxygen bonds, responsible for the reduction in oil viscosity. A decrease in surface tension by 41.48% by adding P-ATP and 57.95% by adding E-ATP contributed to the integration of water molecules and increased separation speed. Microscopic analysis shows an increase in the volume diameter of the water droplets, more than threefold when E-ATP is added and more than twofold when ATP-P is added.
An Evaluation of the Combination of Fibers and Granules for Lost Circulation Material Applications
Authors: Henriques Cassian , Dahi Taleghani Arash 
Published: December 2024

Summary
To counter the issue of lost circulation, several types of lost circulation materials (LCMs), such as granules, fibers, and flakes, have been developed and tested in the laboratory and field. Ample research has suggested that the combination of two or more different LCMs instead of a single type leads to a better overall fracture-plugging capability. However, the design of these LCM combinations is more often aligned toward trial and error in an attempt to discover the best LCM properties rather than an in-depth and systematic engineering design that appropriately captures the physics of the problem. In this paper, a novel coupled computational fluid dynamics-discrete element method (CFD-DEM) numerical model is developed to closely assess the effect of the combination of granules and fiber LCMs for fracture plugging applications. For an effective LCM design, it is vital to take into consideration the innate particle properties of the fibers and granules as they are among the most important parameters in determining if the combination yields an improved plugging effect than if used separately. For this reason, the effects of important LCM properties such as fiber stiffness, granular particle-size distribution, and the concentration of each LCM type in the blend are investigated in a systematic parametric study. Often, due to a lack of information on the loss zone, the extent of the fracture sizes being dealt with remains unclear, and although granular LCMs by themselves portray good plugging capability in small fractures, due to size limitations, they fail to plug the wide fractures. Thus, the focus of this study is on the scenario when the fiber LCMs are the main drivers of the fracture bridging process. With the help of this study, we attempt to demystify the essential fiber and granular particle properties that in synergy would lead to the best fracture-plugging capability.
Back to the future: primitivization, barbarization, or new scenarios of human development?
Authors: Iakovleva E. L. , Grigoryev R. A. 
Published: December 2024

Objective: to analyze the current digital stage of development from the viewpoint of the social structure and manifestations of an individual in it, as the latter has acquired a new form of identity – digital nomadism. Methods: dialectical and phenomenological methods using comparative analysis. The ideas of A. A. Dydrov and R. V. Penner, G. L. Tulchinsky, M. Shpitzer, and E. L. Yakovleva served as material for theoretical understanding of the problem. Results: the analysis made it possible to identify the features of primitivization and barbarization in the modern existence of society and the electronic nomad, which began to function in the coordinate system of the two worlds. Their modus appears to be digital. At the same time, primitivization is associated with the intellectual manifestations of the electronic nomad, and barbarization is associated with their actions in the virtual space. The intersection of elements of primitivization and barbarization leads to some immoral manifestations of the electronic nomad, who allow themselves indecent deeds in the digital environment. Trying to predict the future, the authors point to the best development option associated with the cooperation of electronic nomads and robots, and the worst one, determined by the introduction of implants into the human brain. The latter scenario will make the electronic nomad fully manageable, which will be beneficial for owners of corporations and digital platforms. But there is always hope to avoid the negative option. In the situation of the electronic nomad, their gradual adaptation to the digital environment and the launch of the rationalization process will allow them to follow an optimistic path of development. Scientific novelty: due to advances in science and technology, the digitalization process is ambiguous. Despite the high level of comfort of modern civilization, the features of primitivization and barbarization appear in the existence of the electronic nomad. The authors emphasize that these characteristics are temporary in nature, associated with the society transition to a new stage of development; hence, the electronic nomad will gradually learn to function competently, work and express themselves in the digital environment. But a different outcome is also possible. In the context of the development of brain modification technologies, the electronic nomad can be integrated into a new economy, which will not allow for their development and will lead to complete isolation from the meaningfulness, awareness and reflection inherent in a self-sufficient personality. Practical significance: consists in using the research results to further study the modern stage of civilizational development associated with digitalization and the features of a new type of personality – the electronic nomad, as well as in identifying risk zones in social and individual existence in order to block or minimize them.