bluuebunny/crossref_metadata_2025_split huggingface dataset:
A mean field model for the development of renewable capacities
Authors: Alasseur Clémence , Basei Matteo , Bertucci Charles , Cecchin Alekos 
Published: November 2023

AbstractWe propose a model based on a large number of small competitive producers of renewable energies, to study the effect of subsidies on the aggregate level of capacity, taking into account a cannibalization effect. We first derive a model to explain how long-time equilibrium can be reached on the market of production of renewable electricity and compare this equilibrium to the case of monopoly. Then we consider the case in which other capacities of production adjust to the production of renewable energies. The analysis is based on a master equation and we get explicit formulae for the long-time equilibria. We also provide new numerical methods to simulate the master equation and the evolution of the capacities. Thus we find the optimal subsidies to be given by a central planner to the installation and the production in order to reach a desired equilibrium capacity.
Arterial spin labeling reveals disordered cerebral perfusion and cerebral blood flow-based functional connectivity in primary open-angle glaucoma
Authors: Wang Qian , Qu Xiaoxia , Wang Huaizhou , Chen Weiwei , Sun Yunxiao , Li Ting , Chen Jianhong , Wang Yang , Wang Ningli , Xian Junfang 
Published: November 2023

Abstract
Purpose
Primary open-angle glaucoma (POAG) is a widespread neurodegenerative condition affecting brain regions involved in visual processing, somatosensory processing, motor control, emotional regulation and cognitive functions. Cerebral hemodynamic dysfunction contributes to the pathogenesis of glaucomatous neurodegeneration. We aimed to investigate cerebral blood flow (CBF) redistributed patterns in visual and higher-order cognitive cortices and its relationship with clinical parameters in POAG, and we hypothesized that CBF changes together across regions within the same functional network.

Methods
Forty-five POAG patients and 23 normal controls underwent three-dimensional pseudocontinuous arterial spin labeling MRI to measure the resting-state CBF. Group comparisons of CBF and correlations between CBF changes and ophthalmological and neuropsychological indices were assessed. We determined CBF-based functional connectivity (CBFC) by calculating the correlations between specific regions and all other brain voxels and compared CBFC differences between groups.

Results
The patients exhibited decreased CBF in visual cortices, postcentral gyrus, inferior parietal lobule and cerebellum and increased CBF in medial, middle, and superior frontal gyri, as well as the insula. The reduced CBF in the visual cortices positively correlated with visual field defect (r = 0.498, p = 0.001) in POAG patients, while the increased CBF in the right medial frontal gyrus was negatively associated with the visual field defect (r = −0.438, p = 0.004) and positively associated with the cup-to-disc ratio (r = 0.469, p = 0.002). POAG patients showed negative connections weakening or converting to mild positive connections, as well as positive connections converting to negative connections.

Conclusions
Regional and interregional CBF properties confirmed that the aberrant brain regions extend beyond the visual pathway, including the somatosensory, emotional and cognitive networks, which highlights the importance of cerebral hemodynamic dysfunction in the pathophysiology of spreading neurodegeneration in POAG.
Preparation and characterisation of hydrotalcites colloid dispersions suitable for deacidification of paper information carriers
Authors: Jurišová Jana , Danielik Vladimír , Malečková Soňa , Guzikiewiczová Eva , Králik Milan , Vizárová Katarína , Ambrová Marta , Fellner Pavel 
Published: November 2023

AbstractHydrotalcite samples were prepared in the form of powder and/or sol under different conditions and characterised by various techniques. A suitable system of liquid carriers consisting of perfluoroheptane, isopropanol, and water (PFH-IPA-H2O) was chosen to apply HTlcs as deacidifying agents on paper. The areas of miscibility and immiscibility in the PFH-IPA-H2O system were determined at a temperature of 25 °C. The properties of HTlcs dispersed in the prepared solvent were measured. The size of the particles was determined by optical microscopy with image analysis. The average particle size ranges from 1 µm to 2 µm. The settling speed of particles in the prepared colloidal systems was monitored using turbidimetry. Sols in the mixture of solvents had uniformly dispersed particles that settled slowly. The effect of the prepared colloidal HTlcs dispersions on the properties of the paper, specifically the pH of its surface, was also tested. Hydrotalcites in the form of a sol with a ratio of magnesium to aluminium of 5:1 were found to be promising candidates for deacidification. The use of surfactant additives in the preparation of HTlcs did not positively affect the properties of the paper.
Comprehensive multi-modality treatment of thoracic aorta pseudoaneurysms: a single-center experience
Authors: Recicarova Sandra , Jonak Michael , Netuka Ivan 
Published: November 2023

Abstract
Introduction
Thoracic aorta false aneurysms (TAFA) are unexplored complications after cardiac surgery associated with significant morbidity and mortality. Therefore, the purpose of this study was to examine the clinical profiles, surgical techniques, and operative outcomes, of patients treated for TAFA at a single institution.

Methods
From 1996 to 2022, 112 patients were treated for aortic pseudoaneurysm (mean age 55 ± 14 years, 78 patients were male). In the majority of the patients (90%) TAFA developed after previous cardiovascular surgery, the most common diagnosis and surgical procedure preceding the TAFA development was an aortic dissection (52%) and Bentall procedure (47%). In the rest of the cohort, the leading cause was trauma.

Results
Sixty-one percent of patients were indicated for reintervention (surgical reoperation, endoluminal graft implantation, septal occluder implantation, coil embolization, or a combination of procedures). Overall, 52 patients had undergone cardiac reoperation. TAFA was resected and the aorta was repaired in 55% or replaced in 45%. Operative mortality was 5.7%. In postoperative follow-up, a hypoechogenic lesion encircling aortic prosthesis was present in 94%, therefore it was determined as a negative prognostic factor. The mean follow-up was 13.2 ± 19.4 years.

Conclusion
Although there is no specific approach how to prevent TAFA development, maintaining normal blood pressure and regular follow-up should be applied. More frequent follow-ups should be performed in patients with a hypoechogenic lesion encircling and aortic prosthesis. Early detection during long-term postoperative follow-up, an individually tailored approach of a multidisciplinary team is necessary for favorable treatment outcomes.
From molecular beam technologies to virtual experiments and communities
Authors: Laganà Antonio 
Published: November 2023

AbstractIn the last 50 years, the impressive results on chemical kinetics from crossed molecular beam experiments have been assisted by theoretical and particularly computational progress, among which are: (1) the design and implementation of the SIMBEX (SImulation of Molecular Beam EXperiments) procedure on parallel and distributed computers aimed at rationalizing the dynamical behavior of the investigated systems on the ab initio computed molecular interactions; (2) the establishing of theoretical and computational research and educational networks (like the Quantum Reactive Scattering and European Chemistry Thematic Network), the assembling of virtual research communities (like the meta- and the grid-chemistry ones within the Collaboration in Science and Technology (COST) initiatives to enhance synergic and cooperative work levering on highly productive platforms; (3) the participation in the management of both the Italian and the European grid infrastructures initiatives; (4) the development of molecular open science-enabled cloud services within the European Open Science Cloud (EOSC). Levering on the mentioned collaborative efforts, important open science initiatives have been implemented. The present paper illustrates a prototype model apparatus for the production of methane out of CO2 using renewable energy sources and a prosumer (producer–consumer) model for delivering online chemistry competence tests. Finally, a suggestion is made to establish networked local services of the academy for high school education.
An algorithm to improve magnetic ranging accuracy for cluster horizontal wells with narrow spacings
Authors: Diao Binbin , Gao Deli , Zhang Sen , Liu Zhe 
Published: November 2023

AbstractIn order to realize the efficient development of unconventional oil and gas, the measurement accuracy of wellbore spacing in the drilling of parallel horizontal wells is more and more required. Although the Rotating Magnet Ranging System or Magnetic Guidance Tool is used to achieve a good ranging effect in the drilling of dual horizontal wells, the position measurement of the magnetic sub leads to a large ranging error. A new ranging algorithm for the Two Sensor Packages-Rotating Magnet Ranging System is presented in this paper. The algorithm takes the magnetic signal generated by the rotation of the magnetic sub at a fixed position, the tilt measurement data of the two wells, the length of the magnetic sub, and the distance between the two fluxgate sensors as input parameters to avoid measuring the position of the magnetic sub and to reduce the influence of the degree of non-parallelism and the length of the magnetic sub. The simulation and experiment demonstrate that the inclination and azimuth angles of the two wells have a significant impact on the magnetic ranging results when the ranging well sections are not parallel and that the distance between the bottom of the drill bit and the center of the magnetic sub cannot be ignored. Moreover, the accuracy of the relative distance calculated by this new algorithm can reach 97%, and the error of direction calculation is less than 3°. Applying this algorithm in the field can successfully aid in controlling the spacing of cluster horizontal wells more accurately.
Harnessing the potential of modified cellulosic pumpkin seed hulls as affordable biosorbents for cationic dye removal from aqueous solutions: adsorption kinetics and isotherm studies
Authors: Hady Ahmed K. , Owda Medhat E. , Abouzeid Ragab E. , Shehata Hassan A. , Elzaref Ahmed S. , Elfeky Ahmed S. 
Published: November 2023

AbstractThis investigation focuses on examining the adsorption behavior of crystal violet dye on cellulose (CS) and its modified forms, including cellulose loaded with nicotinic acid (CSN) and cellulose loaded with thiourea (CST). Batch experiments were performed to analyze the adsorption process, while various characterization techniques, such as Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA), were utilized to assess the structural and morphological changes in the cellulose materials. The findings reveal that the adsorption process follows a pseudo-second-order kinetic model, indicating a chemical adsorption mechanism. Additionally, the Langmuir isotherm model suggests monolayer adsorption on cellulose surfaces. Thermodynamic analysis demonstrates that the adsorption process is spontaneous and exothermic for CS and CSN, whereas it is endothermic for CST. The characterization techniques employed provide valuable insights into the structural modifications and porous properties of cellulose materials. Overall, this study underscores the potential of modified cellulose materials to effectively remove dyes in wastewater treatment applications. Notably, thiourea-loaded cellulose CST exhibits superior adsorption capacity with removal percentages of 78.2% compared to CS and CSN, whose removal percentages were 76.45% and 76.72%, respectively, suggesting the promising role of CST in dye removal. These findings contribute to a comprehensive understanding of crystal violet dye adsorption on cellulose and its modified forms, thereby paving the way for future research on the application of modified cellulose materials in wastewater treatment processes.
Sodalite zeolitic materials produced from coal fly ash for removal of congo red dye from aqueous solutions
Authors: Abas K. M. , Fathy N. A. 
Published: November 2023

AbstractCoal fly ash (CFA) is an excellent source of silica–alumina precursor that can be used for the copious and continuous manufacturing of zeolitic materials. This study provides a novel strategy to prepare zeolitic sodalite from CFA as adsorbents for Congo red (CR) dye removal under variable conditions. Sodalite crystals (S) were prepared by a calcination of sodium–aluminum silicate derived from CFA in either absence or presence of cetyltrimethylammonium bromide (CTAB) surfactant (CTAB-S). SEM, XRD, FTIR, and N2 adsorption measurements were demonstrated. XRD results confirmed the presence of mullite and quartz as main components in CFA which converted to sodalite phases after calcination in existence of CTAB. SEM revealed that agglomerated larger particles were formed in S sample without adding CTAB, whereas smaller spherical particles aggregated together upon adding CTAB to form zeolitic structure (CTAB-S). FTIR showed the characteristic absorption bands of sodalite related to oxygen-containing Si and Al groups. Batch adsorption isotherm studies were conducted to evaluate the maximum adsorption capacities of S and CTAB-S, which were amounted to be 152.7 and 184.8 mg/g, respectively. Adsorption of CR dye was fitted with Freundlich isotherm. Kinetic results perfectly matched with pseudo-second-order model and intraparticle diffusion. Thermodynamic findings indicated that the adsorption of CR dye over both samples was endothermic and spontaneous in nature. CTAB-S sample showed the best reusable adsorbent, according to reuse experiments employing water as a desorbing agent. Overall, it can be concluded that CFA-derived sodalite can be used as an effective adsorbent for anionic dyes removal from wastewater.
Characterization of friction stir-based linear continuous joining of aluminium alloy to structural polymer
Authors: Khadka Prabilson , Varglund Sean , Akinwamide Samuel , Vilaça Pedro 
Published: November 2023

AbstractDissimilar continuous joining of lightweight metal alloys to structural polymer is a major manufacturing challenge, demanding feasible and reliable solutions. Through-slot extrusion joining (TSEJ) is a friction stir-based processing technique investigated in the manufacturing of continuous linear joints between aluminium alloy AA5754 overlapping structural polymer polyether ether ketone (PEEK). An intermediate rigid and thin titanium extrusion die protects the polymer locally from thermal degradation and promotes the formation of a continuous double hook-like feature of extruded aluminium into the polymer component along the joint path. The structure of the joint provides macro-mechanical interlocking between the joined components. A set of four tools, and other key process parameters, were investigated for process stability, tensile-shear strength, and microstructure. The best TSEJ condition is chosen for microstructural analysis via optical microscopy and scanning electron microscopy. Three distinct failure modes were identified. The best condition provided an average tensile-shear load of 110 kN/m. The tool position with bias toward the flow side of the extrusion slot shows to improve the strength of joints. The microstructural analysis along the interface of AA5754 to PEEK exhibits micro-mechanical interlocking, intercalated layers of these materials and adhesion as joining mechanisms.
Variability of temperature on the electrical properties of heterostructured CIS/Cds through SCAPS simulation for photovoltaic applications
Authors: Faremi Abass Akande , Olubosede Olusayo , Salau Ayodeji Olalekan , Adigbo Samuel Olakunle , Olubambi Peter Apata , Lawan Ezekiel 
Published: November 2023

AbstractRenewable energy research has received tremendous attention in recent years in a quest to circumvent the current global energy crisis. This study carefully selected and simulated the copper indium sulfur ternary compound semiconductor material with cadmium sulfide owing to their advantage in photovoltaic applications. Despite the potential of the materials in photovoltaic devices, the causes of degradation in the photovoltaic efficiency using such compound semiconductor materials have not really been investigated. However, electrical parameters of the materials such as open circuit voltage, short circuit current density, and fill factor have been extensively studied and reported as major causes of degradation in materials’ efficiency. Furthermore, identifying such electrical characteristics as a primary degradation mechanism in solar cells, this study work is an ardent effort that investigates the materials' electrical behavior as a cure to the degradation associated with compound semiconductor-based photovoltaic. In this study, we numerically characterized the electrical properties such as fill factor, open circuit voltage, short circuit current density, power conversion efficiency, net recombination rate, net generation rate, generation current density, recombination current density, hole current density, electrons current density, energy band diagram, capacitance–voltage, electric field strength of the heterostructured CIS/CdS compound semiconductor material using SCAP-1D. We also investigated the effect of temperature on the electrical properties of heterostructured materials. The obtained results reveal the uniformity of the total current density in the material despite the exponential decrease in the electron current density and the exponential increase in hole current density. The extracted solar cell parameters of the heterostructured CIS/CdS at 300 K are 18.6% for PCE, 64.8% for FF, 0.898 V for Voc, and 32 mA cm−2 for Jsc. After the investigation of the effect of temperature on the CIS/CdS compound semiconductor material, it was observed that the solar cell was most efficient at 300 K. The energy band gap of the CIS/CdS compound semiconductor material shrinks with an increase in temperature. The highest net recombination rate and recombination current is at 400 K, while the net generation rate and generation current density are independent of temperature. The study, on the other hand, gave insights into the potential degradation process, and utilizing the study’s findings could provide photovoltaic degradation remediation.
Correlating dry wear turning and pin-on-disc tests: a cost-effective approach to machinability evaluation for low carbon steel grades
Authors: Krahmer Daniel Martínez , Martynenko Vitaliy , Osenda Alberto Pereyra , J. Sánchez Egea Antonio 
Published: November 2023

AbstractMachinability tests play a crucial role in the metalworking industry despite their inherent cost and time requirements. This study aims to introduce a novel approach by establishing a correlation between the dry wear turning and pin-on-disc tests, potentially enabling their interchangeability. The industry is particularly interested in this challenge due to the simplified implementation and reduced costs and time compared to the conventional turning test. The correlation between the dry wear turning and pin-on-disc tests was investigated using three low carbon steel grades (12L14, 1212, and 1018) and three medium cutting speeds (150, 180, and 240 m/min). Additionally, a comprehensive cost-energy comparison is conducted to underscore the significance of identifying a laboratory test equivalent to the traditional machinability test. The obtained results reveal a strong correlation between both wear tests. Furthermore, the relative cost analysis demonstrates that the pin-on-disc test costs only 14% of the long-duration turning test, emphasizing its cost-effectiveness.
Implementation of process optimization to maximize line productivity in pharmaceutical industries
Authors: Maaboud Mahmoud R. Abd El , Kassem Sally S. , Elatriby Sherif A. , Fahim Irene S. 
Published: November 2023

Abstract
Macro Group is the largest player in Egypt’s fast-growing cosmeceutical industry founded in 2002, and Macro has about 149 stock-keeping units (“SKUs”) with a 31.4% market share in 2022. The macro group has three-ampoule products for hair, namely, Atrakta, Verdex, and Solodex with an expected forecast of 134,655 FG in 2023 and it’s expected to reach 261,000 FG in 2027. 188 working days per year in 2023 are required to manufacture the forecasted units and 365 working days to manufacture 2027 forecasted units. Through observing the production line of Atrakta, it has been noticed that the production line could be enhanced to increase the production rate, and hence, meet market demands efficiently. Therefore, this paper aims to study and investigate the Atrakta hair ampoules production line to reach the optimum line productivity and to commit to market needs. Studying the Atrakta hair ampules production line is conducted through interviews, production line observation, data collection, and modeling and simulation of the production line. Two scenarios recommending improvements to the production lines are proposed and simulated. The two scenarios differ mainly in the probability distribution of probabilistic inputs. Simulating the system with the recommended improvements for the two scenarios shows similar results of increased productivity. Simulation results of improved systems show an increase of 300% in daily production from 720 FG per day to 2176 FG per day. According to Atrakta's results, the Macro group decided to implement the same recommended improvements on the similar process of Verdex and Solodex ampoules to reach 2176 FG. The required working days to reach forecasted units in 2023 decreased from 188 to 67 days and also decreased from 365 to 132 days in 2027.

ArticleHighlights

The primary pack items are decreased, and secondary pack of ampoules SKUs has been changed to avoid bottlenecks.

The change of primary and secondary pack plays a significant role in increasing the productivity 3 times for the non-sterile ampoules production unit.

The increasing of production capacity decreased the required working days in 2023 till 2027.
Spatiotemporal Variations of Intermediate‐Depth Earthquakes Before and After 2011 Tohoku Earthquake Revealed by a Template Matching Catalog
Authors: Zhai Qiushi , Peng Zhigang , Matsubara Makoto , Obara Kazushige , Wang Yanbin 
Published: November 2023

AbstractWe investigate spatiotemporal changes of intermediate‐depth earthquakes in the double seismic zone beneath Central and Northeastern Japan before and after the 2011 magnitude 9 Tohoku earthquake. We build a template‐matching catalog 1 year before and 1 year after the Tohoku earthquake using Hi‐net recordings. The new catalog has a six‐fold increase in earthquakes compared to the Japan Meteorological Agency catalog. Our results show no significant change in the intermediate‐depth earthquake rate prior to the Tohoku earthquake, but a clear increase in both planes following the Tohoku earthquake. The regions with increased intermediate‐depth earthquake activity and the post‐seismic slips following the Tohoku earthquake are spatially separate and complementary with each other. Aftershock productivity of intermediate‐depth earthquakes increased in both planes following the Tohoku earthquake. Overall, aftershock productivity of the upper plane is higher than the lower plane, likely indicating that stress environments and physical mechanisms of intermediate‐depth earthquakes in the two planes are distinct.