bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rohgutcharakterisierung und aufbereitungstechnische Untersuchungen an Roherzen aus der Grube Clara der Firma Sachtleben Bergbau GmbH & Co. KG
Authors: Prem Dominic , Petersen Thies-Olaf , Rieger Ana , Mauerlechner Robert , Flachberger Helmut 
Published: June 2024

ZusammenfassungMit Fortschreiten des Abbaus in tiefere Bereiche der Grube Clara der Firma Sachtleben Bergbau GmbH & Co. KG am Standort Wolfach ist nach derzeitigem Wissenstand mit einem vermehrten Auftreten von kupfer- und silberhaltigen Vererzungen zu rechnen. Bisher wurden diese vor allem im südlichen Teil der Lagerstätte angetroffen und gesondert hereingewonnen sowie aufbereitet. Durch das vermehrte Auftreten dieser Vererzungen ist der bisherige Anlagenbetrieb zur Sulfid-Flotation unter Nutzung der bestehenden Aufbereitungsanlage kritisch zu hinterfragen, was im Zuge eines mehrjährigen Forschungsprojektes gemeinsam mit dem Lehrstuhl für Aufbereitung und Veredlung der Montanuniversität Leoben geschah.Als Grundlage für die Forschungsaktivitäten dienten Roherze aus unterschiedlichen Lagerstättenbereichen, die im Zuge einer als umfangreich zu bezeichnenden Probenahmekampagne hereingewonnen wurden. Diese wurden nach der Leobener Schule der Aufbereitungstechnischen Merkmalsklassenanalyse hinsichtlich ihrer Mineralogie, Verwachsung und Aufbereitbarkeit untersucht. Darauf aufbauend wurden umfangreiche Zerkleinerungs- und Flotationsversuche durchgeführt. Die forschungsrelevanten Teile der diesbezüglichen Aktivitäten erfolgten im Rahmen der Dissertation des erstgenannten Autors.Dieser Beitrag gibt Einblicke in die komplexen gleichwie intensiven Verwachsungsverhältnisse der aufgefundenen Kupfer- und Silberträger und zeigt, dass trotz der unterschiedlichen Zerkleinerungswiderstände der Wertminerale, Flotationskonzentrate mit mehr als 90 % Inhaltsausbringen und hoher Selektivität erzeugt werden können.
3D exoscopic versus microscopic superficial temporal artery to middle cerebral artery bypass surgery for moyamoya disease – a comparative series
Authors: Veldeman Michael , Rossmann Tobias , Nurminen Ville , Huhtakangas Justiina , Haeren Roel Hubert Louis , Hafez Ahmad , Niemela Mika , Lehecka Martin 
Published: June 2024

Abstract

Purpose
Superficial temporal artery to middle cerebral artery (STA-MCA) direct bypass surgery is the most common surgical procedure to treat moyamoya disease (MMD). Here, we aim to compare the performance of the 3D exoscope in bypass surgery with the gold standard operative microscope.

Methods
All direct STA-MCA bypass procedures performed at a single university hospital for MMD between 2015 and 2023 were considered for inclusion. Data were retrospectively collected from patient files and surgical video material. From 2020 onwards, bypass procedures were exclusively performed using a digital three-dimensional exoscope as visualization device. Results were compared with a microsurgical bypass control group (2015–2019). The primary endpoint was defined as total duration of surgery, duration of completing the vascular anastomosis (ischemia time), bypass patency, number of stiches to perform the anastomosis, added stiches after leakage testing of the anastomosis and the Glasgow outcome scale (GOS) at last follow-up as secondary outcome parameter.

Results
A total of 16 consecutive moyamoya patients underwent 21 STA-MCA bypass procedures. Thereof, six patients were operated using a microscope and ten patients using an exoscope (ORBEYE® n = 1; AEOS® n = 9).
Total duration of surgery was comparable between devices (microscope: 313 min. ± 116 vs. exoscope: 279 min. ± 42; p = 0.647). Ischemia time also proved similar between groups (microscope: 43 min. ± 19 vs. exoscope: 41 min. ± 7; p = 0.701). No differences were noted in bypass patency rates. The number of stiches per anastomosis was similar between visualization devices (microscope: 17 ± 4 vs. exoscope: 17 ± 2; p = 0.887). In contrast, more additional stiches were needed in microscopic anastomoses after leakage testing the bypass (p = 0.035).

Conclusion
Taking into account the small sample size, end-to-side bypass surgery for moyamoya disease using a foot switch-operated 3D exoscope was not associated with more complications and led to comparable clinical and radiological results as microscopic bypass surgery.
Improved rates of postoperative ischemia, completeness of aneurysm occlusion and neurological deficits in elective clipping of anterior circulation aneurysms over the past 20 years – association with technical improvements
Authors: Siller Sebastian , Briegel Josef , Kunz Mathias , Liebig Thomas , Forbrig Robert , Tonn Joerg-Christian , Schichor Christian , Thorsteinsdottir Jun 
Published: June 2024

Abstract

Background/Purpose
Several periprocedural adjuncts for elective surgical aneurysm treatment have been introduced over the last 20 years to increase safety and efficacy. Besides the introduction of IONM in the late-1990s, ICG-videoangiography (ICG-VAG) since the mid-2000s and intraoperative CT-angiography/-perfusion (iCT-A/-P) since the mid-2010s are available. We aimed to clarify whether the introduction of ICG-VAG and iCT-A/-P resulted in our department in a stepwise improvement in the rate of radiologically detected postoperative ischemia, complete aneurysm occlusion and postoperative new deficits.

Methods
Patients undergoing microsurgical clip occlusion for unruptured anterior circulation aneurysms between 2000 and 2019 were included, with ICG-VAG since 2009 and iCT-A/-P (for selected cases) since 2016. Baseline characteristics and treatment-related morbidity/outcome focusing on differences between the three distinct cohorts (cohort-I: pre-ICG-VAG-era, cohort-II: ICG-VAG-era, cohort-III: ICG-VAG&iCT-A/-P-era) were analyzed.

Results
1391 patients were enrolled (n = 74 were excluded), 779 patients were interventionally treated, 538 patients were surgically clipped by a specialized vascular team (cohort-I n = 167, cohort-II n = 284, cohort-III n = 87). Aneurysm size was larger in cohort-I (8.9 vs. 7.5/6.8 mm; p < 0.01) without differences concerning age (mean:55years), gender distribution (m: f = 1:2.6) and aneurysm location (MCA:61%, ICA:18%, ACA/AcomA:21%). There was a stepwise improvement in the rate of radiologically detected postoperative ischemia (16.2vs.12.0vs.8.0%; p = 0.161), complete aneurysm occlusion (68.3vs.83.6vs.91.0%; p < 0.01) and postoperative new deficits (10.8vs.7.7vs.5.7%; p = 0.335) from cohort-I to -III. After a mean follow-up of 12months, a median modified Rankin scale of 0 was achieved in all cohorts.

Discussion
Associated with periprocedural technical achievements, surgical outcome in elective anterior circulation aneurysm surgery has improved in our service during the past 20 years.
Wideband polarization and spectral properties of 18 high Galactic latitude pulsars
Authors: Ahmad A. , Dai S. , Lenc E. , Filipović M. D. , Barnes L. , Hobbs G. , Balzan J. C. F. , Zhang L. 
Published: June 2024

AbstractThe broad-spectrum polarization and spectral characteristics of pulsars contain crucial information about the origin of their radio emission. These properties, together with pulsar flux density variations, can also be used to guide future surveys of radio pulsars and probe the Galactic interstellar medium. In this paper, we present studies of 18 pulsars at high Galactic latitudes using the Ultra-Wideband Low (UWL) receiver of the Parkes radio telescope. For these pulsars, we measured their wideband flux densities, spectral indices, and polarization fractions. We obtain seven new rotation measures (RMs) and refine the RMs of another ten pulsars. In this sample of pulsars, we observed significant variations in their flux densities, suggesting that previous shallow surveys were likely to miss a population of pulsars at high galactic latitude. In addition, we identified a previously reported isolated pulsar (PSR J1947−18) as a potential binary system.
Mercury in aquatic ecosystems of two indigenous communities in the Piedmont Ecuadorian Amazon: evidence from fish, water, and sediments
Authors: Escobar-Camacho Daniel , Rosero-López Daniela , Ruiz-Urigüen Melany , Barragán Karla S. , Carpintero-Salvador Natalia , Daza José R. , Aldous Allison , Benítez Silvia , Tear Timothy , Encalada Andrea C. 
Published: June 2024

AbstractMercury is a highly toxic element present in water, soil, air, and biota. Anthropogenic activities, such as burning fossil fuels, mining, and deforestation, contribute to the presence and mobilization of mercury between environmental compartments. Although current research on mercury pathways has advanced our understanding of the risks associated with human exposure, limited information exists for remote areas with high diversity of fauna, flora, and indigenous communities. This study aims to deepen our understanding of the presence of total mercury in water, sediments, and fish, within aquatic ecosystems of two indigenous territories: Gomataon (Waorani Nationality) and Sinangoé (Ai´Cofán Nationality) in the Ecuadorian Amazon. Our findings indicate that, for most fish (91.5%), sediment (100%) and water (95.3%) samples, mercury levels fall under international limits. For fish, no significant differences in mercury levels were detected between the two communities. However, eight species exceeded recommended global limits, and one surpassed the threshold according to Ecuadorian legislation. Piscivore and omnivore fish exhibited the highest concentrations of total mercury among trophic guilds. Only one water sample from each community’s territory exceeded these limits. Total mercury in sediments exhibited greater concentrations in Gomataon than Sinangoé. Greater levels of mercury in sediments were associated with the occurrence of total organic carbon. Considering that members of the communities consume the analyzed fish, an interdisciplinary approach, including isotopic analysis, methylmercury sampling in humans, and mercury monitoring over time, is imperative for a detailed risk assessment of mercury exposure in Amazonian communities.
Strontium leaching from municipal waste subjected to incineration
Authors: Alicja Kicińska , Grzegorz Caba 
Published: June 2024

AbstractThe aim of the study was to determine the content and leachability of Sr in ashes obtained through combusting municipal waste in household furnaces. The waste had been collected as a mixed stream and as separate fractions (i.e. furniture, sponges, waste paper, PCV packaging, plastic-coated paper cartons, imitation leather, rubber, textiles and polystyrene). Using single-step chemical extractions, (HCl + HNO3, H2O, 0.01 M CaCl2, 0.1 M CH3COOH), we determined the total content of Sr (TC) and proportions of the following fractions: water-leachable, phytoavailable and easily soluble and bound to carbonates. We also analyzed the effect of reducing pH in the extraction solutions on St leachability from the study material. The study showed that Sr concentration in ash generated from the combustion of conventional fuels, alternative fuels and municipal waste ranged from 114 to 1006 mg/kg. The largest amounts of Sr were found in ash generated from the combustion of alternative fuels (coal pellets 488–1006 mg/kg), conventional fuels (hard coal 430–670 mg/kg) and mixed waste (237–825 mg/kg). The most mobile fraction of Sr (water-leachable) comprised from 1.3% to nearly 91% TC; the phytoavailable fraction and the ion-exchange and carbonate-bound fraction comprised 3–92% TC and 9–72% TC, respectively. We also found that the greatest pH reductions do not always entail the greatest amounts of extracted Sr. A much more significant factor in this respect is the mineral and chemical composition of primary materials, which can buffer changes in pH. The Risk Assessment Code (RAC) values pointed to a varied environmental risk and the highest RAC values (> 70) were found for coal pellets, wood pellets, straw, rubber and plastic containers for mixed oils.
Does information about environmental considerations affect Chinese and UK consumers’ purchase intentions for traced foods? A path analysis
Authors: Jin Shan , Matsuoka Yasuhiro , Yue Meng , Jones Glyn , Frewer Lynn J. 
Published: June 2024

AbstractConsumers are increasingly focused on making sustainable food choices, necessitating transparent and trusted systems for providing sustainability information. This can be implemented, for instance, through application of traceability systems that “carry” sustainability information about production and distribution. Currently, the literature on traceability mainly addresses consumer perceptions regarding the benefits of traceability concerning food safety and recalls. This research assessed consumers’ perceptions of the benefits of tracing food sustainability information in relation to purchase decisions. Data were collected using online surveys in China (n = 1515) and the UK (n = 1656). Path analysis indicated that higher perceived benefits of tracing sustainability information had small positive impacts on purchase intentions in both countries, with these being more pronounced for traced beef compared to milk and apples. The impacts of perceived environmental benefits on purchase intentions were partially mediated by perceptions of improved food safety and quality. This indirect influence was more prominent among UK respondents, implying potentially stronger safety and quality “halo” effects associated with environmental sustainability information compared to Chinese respondents. Stronger pro-environmental attitudes and greater perceived environmental threats linked to food production correlated with higher perceived environmental benefits of tracing food sustainability information and purchase intentions for traced foods in both countries. Positive correlations between pro-environmental attitudes and perceived environmental threats were only observed for UK respondents, suggesting that environmental issues related to food production might be more integrated into the general environmental attitudes of UK respondents. Implications for marketing strategies and policymaking are proposed considering diverse consumer responses to traced foods between the UK and China, food categories, and socio-demographic groups.
Univalence and Ontic Structuralism
Authors: Chen Lu 
Published: June 2024

AbstractThe persistent challenge of formulating ontic structuralism in a rigorous manner, which prioritizes structures over the entities they contain, calls for a transformation of traditional logical frameworks. I argue that Univalent Foundations (UF), which feature the axiom that all isomorphic structures are identical, offer such a foundation and are more attractive than other proposed structuralist frameworks. Furthermore, I delve into the significance in the case of the hole argument and, very briefly, the nature of symmetries.
A Mixed-Integer Formulation for the Simultaneous Input Selection and Outlier Filtering in Soft Sensor Training
Authors: Sildir Hasan , Boy Onur Can , Sarrafi Sahin 
Published: June 2024

AbstractSoft sensors are used to calculate the real-time values of process variables which can be measured in the laboratory only or require expensive online measurement tools. A set of mathematical expressions are developed and trained from historical data to exploit the statistical knowledge between online and offline measurements to ensure a reliable prediction performance, for optimization and control purposes. This study focuses on the development of a mixed-integer optimization problem to perform input selection and outlier filtering simultaneously using rigorous algorithms during the training procedure, unlike traditional heuristic and sequential methods. Nonlinearities and nonconvexities in the optimization problem is further tailored for global optimality and computational advancements by reformulations and piecewise linearizations to address the complexity of the task with additional binary variables, representing the selection of a particular input or data. The proposed approach is implemented on actual data from two different industrial plants and compared to traditional approach.
The Effect of Naturalistic Developmental Behavioral Interventions and Aided AAC on the Language Development of Children on the Autism Spectrum with Minimal Speech: A Systematic Review and Meta-analysis
Authors: Pope Lauramarie , Light Janice , Laubscher Emily 
Published: June 2024

AbstractBoth naturalistic developmental behavioral interventions (NDBIs) and augmentative and alternative communication (AAC) have been shown to support the language development of children with a diagnosis of autism spectrum disorder and minimal speech. However, little research has addressed the impact of incorporating AAC systems within NDBIs. This systematic review was conducted to assess the relative impact of NDBI procedures with and without AAC on the language development of children on the autism spectrum with minimal speech. Relevant studies were located through systematic database searching, targeted review of relevant journals, and ancestral search of references from identified and associated papers. Relevant study characteristics were coded for all included studies, as well as determining certainty of evidence and calculating effect sizes for language variables. All procedures followed the systematic review guidelines set by the Cochrane Collaboration. A total of 29 relevant studies were included within this review, covering both single-case and group design research. Three studies were identified that directly compared NDBI and AAC interventions. NDBIs had a strong impact on language across study types (i.e., with and without AAC), though both aggregate and comparative effect sizes were notably larger when AAC was included within NDBI procedures, as compared to NDBIs without AAC. Results suggest that combining AAC with NDBI procedures may lead to better language outcomes than NDBIs alone for children on the autism spectrum with minimal speech.
Phased Array Ultrasonic Testing on Thick Glass Fiber Reinforced Thermoplastic Composite Pipe Implementing the Classical Time-Corrected Gain Method
Authors: Mohd Tahir Mohd Fadzil , Echtermeyer Andreas T. 
Published: June 2024

AbstractThermoplastic composite pipe is gaining popularity in the oil and gas and renewable energy industries as an alternative to traditional metal pipe mainly due to its capability of being spooled onto a reel and exceptional corrosion resistance properties. Despite its corrosion-proof nature, this material remains susceptible to various defects, such as delamination, fiber breakage, matrix degradation and deformation. This study employed the phased array ultrasonic testing technique with the implementation of the classical time-corrected gain method to compensate for the significant spatial signal attenuation beyond the first interface layer in the thick multi-layered thermoplastic composite pipe. Initially, the ultrasonic signals from the interface layers and back wall were detected with good signal-to-noise ratios. Subsequently, flat-bottom holes of varying depths, simulating one-sided delamination, were bored and the proposed method effectively identified ultrasonic signals from these holes, clearly distinguishing them from the background noise and interface layer signals. Finally, a defect deliberately fabricated within the composite laminate layers during the pipe manufacturing process was successfully identified. Subsequently, this fabricated defect was visualized in a three-dimensional representation using the X-ray computed tomography for a qualitative and quantitative comparison with the proposed ultrasonic method, showing a high level of agreement.
Peer Bullying Victimization Trajectories for Sexually and Gender Diverse Youth from Early Childhood to Late Adolescence
Authors: Huang Jingyi , Kaufman Tessa M. L. , Baams Laura , Branje Susan 
Published: June 2024

AbstractSexually and gender diverse (SGD) youth experience more peer bullying victimization than heterosexual, cisgender youth during adolescence, yet the emergence and persistence of these disparities remain underexplored. Also, it is unclear which factors are associated with these disparities across development, and how these disparities are linked to late adolescent health discrepancies. This study utilized the sample from the Millennium Cohort Study in Britain (N = 10,080; 51.3% assigned female at birth; Mage = 2.28, SDage = 0.46 at Wave 2), in which 23.74% of youth reported non-heterosexual attraction, 21.59% reported non-heterosexual identity, and 1.08% reported gender identity not in line with the sex assigned at birth. Using latent class growth modeling, four peer bullying victimization trajectories were identified, with early peak (7.2%), late childhood peak (6.3%), adolescence onset (12.8%), and low (73.6%) rates of victimization. SGD youth, compared to heterosexual and cisgender youth, were found to have increased odds of being in the victimization-involved classes, especially the adolescence onset class. The study further revealed that SGD youth reported more mental health and relational difficulties in childhood, which were linked to their heightened risk of longer-lasting victimization. Further, long-term victimization was found to partially account for the disparities in health and well-being for SGD youth in late adolescence. In conclusion, SGD youth were more likely to experience longer-lasting bullying victimization during childhood and adolescence, its related mental and relational vulnerabilities were already established in childhood, and such victimization disparities were further linked to their detrimental health and well-being in late adolescence. The design, hypotheses, and target analyses of the current study were preregistered on 21st April 2023 at https://osf.io/f2zxy.
Selective adsorption of actinides and rare earth elements from leach liquor using metal oxide-polymer nanocomposites
Authors: Özkan Bekir , Altaş Yüksel , İnan Süleyman 
Published: June 2024

AbstractUtilization of actinides and rare earth elements is only possible by separating these metals with high purity. The materials used in separation must have thermal, chemical, mechanical, and radiation resistance. In the present study, separation experiments of actinides and rare earth elements (REEs) were carried out using purified H2SO4 leach liquor. Polyacrylonitrile (PAN)-supported Ti, Zr, and Si oxide nanocomposites were tested for the selective separation of Th, U, Gd, Eu, Sm, Pr, Nd, La, Ce, and Y. The effects of pH, contact time, adsorbent/solution ratio, and temperature on distribution coefficient (KD) and adsorption capacity (Q) were investigated. The synthesized nanocomposites tend to separate the elements into two main groups: Th, U, Gd, Eu and Sm, Pr, Nd, La, Ce. Notably, it was observed that the separation of Th and U from the remaining elements is promising at 15 °C. Additionally, the separation can be further improved depending on the differences in desorption efficiency.