bluuebunny/crossref_metadata_2025_split huggingface dataset:
Knowledge seeking and anonymity in digital work settings
Authors: Mickeler Maren , Khashabi Pooyan , Kleine Marco , Kretschmer Tobias 
Published: June 2023

AbstractResearch SummaryEmployees often need knowledge from colleagues to complete tasks successfully. With distributed and remote work becoming more common, organizations increasingly rely on digital technologies, such as organizational platforms, to support members' knowledge exchange. We study factors that hinder employees from seeking knowledge from others on such platforms. We argue that individuals' seeking decisions depend on expected social‐psychological costs and economic considerations and posit that both can be muted by anonymizing seekers. In two experiments, we test our conjectures and find that both types of expected costs reduce knowledge seeking. Social‐psychological costs decrease individuals' knowledge seeking, while adding economic costs further reduces seeking. Moreover, in digital settings, female knowledge seekers are more sensitive to their identity being known than males and thus benefit more from anonymity.Managerial SummaryDistributed and remote work arrangements, often subsumed under the label “new work”, often rely on digital technologies to enable the exchange of relevant knowledge among colleagues. For example, in the US, two‐thirds of S&P 500 firms already maintain some form of digital platform for knowledge exchange, although with mixed success. Employees may avoid seeking knowledge on these platforms both for social‐psychological (a fear of appearing incompetent to their peers) and economic (fear of suffering career consequences) reasons. In a series of (lab and vignette) experiments, we show that both can reduce knowledge seeking and that these implicit costs can be minimized especially in digital contexts through anonymity (to minimize social‐psychological consequences) and separating knowledge seeking platforms by hierarchical levels (to minimize potential economic consequences).
Surface Self‐Transforming FeTi‐LDH Overlayer in Fe2O3/Fe2TiO5 Photoanode for Improved Water Oxidation
Authors: Fouemina Juliette Chancellevie Nalouzebi , Li Guoqing , She Xiaojie , Yan Duan , Lv Xiaoxin , Nie Kaiqi , Deng Jiujun , Xu Hui 
Published: June 2023

AbstractIntegrating hematite nanostructures with efficient layer double hydroxides (LDHs) is highly desirable to improve the photoelectrochemical (PEC) water oxidation performance. Here, an innovative and facile strategy is developed to fabricate the FeTi‐LDH overlayer decorated Fe2O3/Fe2TiO5 photoanode via a surface self‐transformation induced by the co‐treatment of hydrazine and NaOH at room temperature. Electrochemical measurements find that this favorable structure can not only facilitate the charge transfer/separation at the electrode/electrolyte interface but also accelerate the surface water oxidation kinetics. Consequently, the as‐obtained Fe2O3/Fe2TiO5/LDH photoanode exhibits a remarkably increased photocurrent density of 3.54 mA cm−2 at 1.23 V versus reversible hydrogen electrode (RHE) accompanied by an obvious cathodic shift (≈140 mV) in the onset potential. This work opens up a new and effective pathway for the design of high‐performance hematite photoanodes toward efficient PEC water oxidation.
Single‐Ion Polymer Electrolyte Based on Lithium‐Rich Imidazole Anionic Porous Aromatic Framework for High Performance Lithium‐Ion Batteries
Authors: Li Zhangnan , Wang Liying , Liu Yuhan , Yu Mengxuan , Liu Baijun , Men Yongfeng , Sun Zhaoyan , Hu Wei , Zhu Guangshan 
Published: June 2023

AbstractThe low ionic conductivity and Li+ transference number () of solid polymer electrolytes (SPEs) seriously hinder their application in lithium‐ion batteries (LIBs). In this study, a novel single‐ion lithium‐rich imidazole anionic porous aromatic framework (PAF‐220‐Li) is designed. The abundant pores in PAF‐220‐Li are conducive to the Li+ transfer. Imidazole anion has low binding force with Li+. The conjugation of imidazole and benzene ring can further reduce the binding energy between Li+ and anions. Thus, only Li+ moved freely in the SPEs, remarkably reducing the concentration polarization and inhibiting lithium dendrite growth. PAF‐220‐quasi‐solid polymer electrolyte (PAF‐220‐QSPE) is prepared through solution casting of Bis(trifluoromethane)sulfonimide lithium (LiTFSI) infused PAF‐220‐Li and Poly(vinylidene fluoride‐co‐hexafluoropropylene)(PVDF‐HFP), and possessed excellent electrochemical performance. The electrochemical property are further improved by preparing all‐solid polymer electrolyte (PAF‐220‐ASPE) via pressing‐disc method, which has a high Li+ conductivity of 0.501 mS cm−1 and of 0.93. The discharge specific capacity at 0.2 C of Li//PAF‐220‐ASPE//LFP reached 164 mAh g−1, and the capacity retention rate is 90% after 180 cycles. This study provided a promising strategy for SPE with single‐ion PAFs to achieve high‐performance solid‐state LIBs.
Physico‐chemical characterization of Residual Household Waste for energy recovery in insular territories: Case study of Reunion Island
Authors: Maillot Mathilde , Morau Dominique 
Published: June 2023

AbstractWaste‐to‐energy is a promising approach to face the current challenge of waste overproduction in Reunion Island, a French territory. In this particular context of an isolated and tropical territory, it is essential to study the properties of potential feedstocks to choose the most appropriate conversion process. This article reports on the composition of Residual Household Waste from Reunion Island and its physico‐chemical parameters. Twelve representative samples of Residual Household Waste were subjected to thermal and elemental analysis. The results showed that their composition had a significant influence on the physico‐chemical properties, including calorific value. Residual Household Waste from the selective sorting (rich in wood, plastic, and sanitary textiles) as well as dry mixed RHW are the most interesting for energy recovery. Due to their high volatile matter and high carbon content, and their low moisture content, these types of waste have a high calorific value exceeding 18 MJ/kg. Furthermore, the RHW sample comply with the environmental and health criteria applied by French regulations concerning halogen and heavy metal. Thus, it seems that Residual Household Waste can be an alternative to conventional fuels used in incineration or pyro‐gasification processes. However, the study also points the need for a pre‐treatment process for these wastes. Indeed, it is necessary to sort them correctly in order to avoid the risks of pollution and important maintenance. And more importantly, drying beforehand is unavoidable to improve combustibility and obtain optimal energy conversion.
Brucella abortus antigen omp25 vaccines: Development and targeting based on Lactococcus lactis
Authors: Gouran Somaye Tirbakhsh , Doosti Abbas , Jami Mohammad Saeid 
Published: June 2023

AbstractBackgroundMost Brucella infections take place on mucosal membranes. Therefore, creating vaccinations delivered through the mucosa may be crucial for managing brucellosis. Consequently, we assessed the efficacy of a recombinant oral antigen delivery system based on Lactococcus lactis for Brucella abortus omp25 antigen.MethodOral vaccinations with L. lactis transformed with pNZ8148 variants encoding for omp25 (pNZ8148:omp25) and free‐pNZ8148 were administered to mice. On day 30, following immunization in animal groups, anti‐omp25‐specific IgG1 antibodies were assessed by the ELISA test. Additionally, nasal and bronchoalveolar lavages containing omp25‐specific secretory IgA (sIgA) were analysed by ELISA. ELISA test and real‐time PCR were also used to analyse cytokine responses up to 28 days following the last boost. In addition, the protective potential of L. lactis pNZ8148:omp25 vaccines was assessed in BALB/c mice by exposing them to the B. abortus strain.ResultsBased on the initial screening results, the omp25 protein was identified for immunogenicity because it had the maximum solubility and flexibility and antigenic values of 0.75. The produced plasmid was digested using KpnI and XbaI. By electrophoretic isolation of the digestion fragments at 786 bp, the omp25 gene, the successful production of the recombinant plasmid, was confirmed. Antigen expression at the protein level revealed that the target group generated the 25 kDa‐sized omp25 protein, but there was no protein expression in the control group. Fourteen days after priming, there was a considerable amount of omp25‐specific IgG1 in the sera of mice vaccinated with pNZ8148–Usp45–omp25–L. lactis (p < 0.001 in target groups compared to the phosphate‐buffered saline control group). IFN‐γ and TNF‐α levels were more significant in samples from mice that had been given the pNZ8148–Usp45–omp25–L. lactis and IRBA vaccinations, in samples taken on days 14 and 28, respectively (p < 0.001). The pNZ8148–Usp45–omp25–L. lactis and IRBA immunization groups had significantly greater IL‐4 and IL‐10 transcription levels than the other groups. The spleen portions from the pNZ8148–Usp45–omp25–L. lactis and IRIBA vac group had less extensive spleen injuries, alveolar oedema, lymphocyte infiltration and morphological damage due to the inflammatory process.ConclusionOur study offers a novel method for using the food‐grade, non‐pathogenic and noncommercial bacterium L. lactis as a protein cell factory to produce the novel immunogenic fusion candidate romp25. This method offers an appealing new approach to assessing the cost‐effective, safe, sustainable, simple pilot development of pharmaceutical products.
Surgical removal of an orbital liposarcoma in a dog using the cavitron ultrasonic surgical aspirator
Authors: Rawicka Aleksandra , Corlazzoli Daniele , Giudice Chiara , Teodori Simone , D'Anna Nunzio 
Published: June 2023

AbstractA 9‐year‐old boxer presented with unilateral exophthalmos, reduced globe retropulsion and central exposure keratitis in the right eye. On the superolateral orbital quadrant, a firm, well‐limited mass in close proximity to the globe was detected. Ultrasonic and computed tomography examinations confirmed a retrobulbar mass. The biopsy examination revealed the presence of a tumour of adipocytes, consistent with hibernoma. The retrobulbar mass was surgically removed using dorsal orbitotomy with a cavitron ultrasonic surgical aspirator. Complete retrobulbar mass removal was achieved with minimal and transient postoperative complications. The histopathological examination of the mass fragment obtained during surgery showed liposarcoma. Controlled computed tomography performed 4 months after surgery did not reveal signs of recurrence or metastasis. Ophthalmic examination was within normal limits during 1 year of follow‐up. The cavitation ultrasonic surgical aspirator allows precise mass excision with preservation of delicate orbital structures and is particularly useful in cases with challenging anatomical access.
MultiPsi: A python‐driven MCSCF program for photochemistry and spectroscopy simulations on modern HPC environments
Authors: Delcey Mickaël G. 
Published: June 2023

AbstractWe present MultiPsi, an open‐source MCSCF program for the calculation of ground and excited states properties of strongly correlated systems. The program currently implements a general MCSCF code with excited states available using either state‐averaging or linear response. It is written in a highly modular fashion using Python/C++ which makes it well suited as a development platform, enabling easy prototyping of novel methods, and as a teaching tool using interactive notebooks. The code is also very efficient and designed for modern high‐performance computing environments using hybrid OpenMP/MPI parallelization. This efficiency is demonstrated with the calculation of the CASSCF energy and linear response of a molecule with more than 700 atoms as well as a fully optimized conventional CI calculation on more than 400 billion determinants.This article is categorized under:
Software > Quantum Chemistry
Electronic Structure Theory > Ab Initio Electronic Structure Methods
Theoretical and Physical Chemistry > Spectroscopy
siRNA screening reveals that SNAP29 contributes to exosome release
Authors: Hessvik Nina Pettersen , Sagini Krizia , Romero Silvana , Ramirez-Garrastacho Manuel , Rodriguez Marta , Tutturen Astrid Elisabeth V. , Kvalvaag Audun , Stang Espen , Brech Andreas , Sandvig Kirsten , Llorente Alicia 
Published: June 2023

AbstractCells release extracellular vesicles (EVs) of different sizes. Small EVs (< 200 nm) can originate from the fusion of multivesicular bodies with the plasma membrane, i.e. exosomes, and from budding of the plasma membrane, i.e. small ectosomes. To investigate the molecular machinery required for the release of small EVs, we developed a sensitive assay based on incorporation of radioactive cholesterol in EV membranes and used it in a siRNA screening. The screening showed that depletion of several SNARE proteins affected the release of small EVs. We focused on SNAP29, VAMP8, syntaxin 2, syntaxin 3 and syntaxin 18, the depletion of which reduced the release of small EVs. Importantly, this result was verified using gold standard techniques. SNAP29 depletion resulted in the largest effect and was further investigated. Immunoblotting analysis of small EVs showed that the release of several proteins considered to be associated with exosomes like syntenin, CD63 and Tsg101 was reduced, while the level of several proteins that have been shown to be released in ectosomes (annexins) or by secretory autophagy (LC3B and p62) was not affected by SNAP29 depletion. Moreover, these proteins appeared in different fractions when the EV samples were further separated by a density gradient. These results suggest that SNAP29 depletion mainly affects the secretion of exosomes. To investigate how SNAP29 affects exosome release, we used microscopy to study the distribution of MBVs using CD63 labelling and CD63-pHluorin to detect fusion events of MVBs with the plasma membrane. SNAP29 depletion caused a redistribution of CD63-labelled compartments but did not change the number of fusion events. Further experiments are therefore needed to fully understand the function of SNAP29. To conclude, we have developed a novel screening assay that has allowed us to identify several SNAREs involved in the release of small EVs.
Germanium and precious metals (Ag–Au–Pt–Pd) at low temperature: the hematite–carbonate–selenide vein system of Tilkerode, Harz Mountains, Germany
Authors: Lohmeier Stephanie , Cabral Alexandre Raphael , Ehling Bodo-Carlo , Zeh Armin 
Published: June 2023

AbstractAt the historical Eskeborner Berg underground workings at Tilkerode (Eastern Harz Mountains, Germany), Fe was mined from a carbonate–hematite vein system that was locally enriched in selenide minerals. Clausthalite [PbSe] was the most abundant selenide mineral in a carbonate matrix with laths of specular hematite. To date, the selenide-bearing carbonate–hematite vein system at Tilkerode has not been geochemically investigated. Here, we present the first whole-rock chemical data for a wide suite of trace elements. The following metals are enriched relative to bulk continental crust (orders of magnitude in parentheses): Se (>105), Hg (>104), Ag and Pb (103), Au, Bi, Pt, Ge, Te, Pd and Cd (102). Samples from Tilkerode have up to 2640 ppm Ag, 338 ppm Ge, 1560 ppb Au, 970 ppb Pt and 365 ppb Pd, with Pt/Pd > 1, and a significant positive correlation of Ge vs. (Pd+Pt). The selenide mineralisation took place below 112 °C, the maximum temperature stability of umangite [Cu3Se2]. Our data indicate there is potential for prospecting Ge and precious metals in low-temperature vein systems.
Experimentelle und numerische Untersuchung von Fluid-Partikel-Interaktionen in Wasser
Authors: Gold T. , Worf D. , Reiterer K. , Habersack H. , Sindelar C. 
Published: June 2023

ZusammenfassungFür die Entwicklung verbesserter Modelle zur Beschreibung des Sedimenttransports in Fließgewässern ist das grundlegende Verständnis der Interaktion zwischen den festen Partikeln und dem bewegten Fluid (Wasser) bedeutend. In diesem Beitrag werden aktuelle Entwicklungen im Bereich der Fluid-Partikel-Interaktion anhand von zwei konkreten Forschungsarbeiten von Gold et al. (2023) und Worf et al. (2022) vorgestellt. Die experimentelle Forschungsarbeit von Gold et al. (2023) untersucht mithilfe von Messmethoden auf dem neuesten Stand der Technik die Strömung rund um Kugeln verschiedener Dichte, die in anfangs ruhendem Wasser oszillieren. Über den gesamten Dichtebereich ($$m^{*}=\rho _{S}/\rho _{F}=$$

m
*

=

ρ
S

/

ρ

F

=

1,14; 14,95; Dichteverhältnis von Solid und Fluid) konnte für das Kugelpendel eine vergleichbare Charakteristik der Wirbelablösung festgestellt werden. Ebenso wird eine neue Methode der Objektverfolgung (DOT) vorgestellt, welche eine zeitlich und räumlich aufgelöste Analyse der Strömungsstrukturen im Fluidfeld ermöglicht. Gold et al. (2023) zeigen, dass es während der ersten Periode zur Wirbelablösung kommt. Dieser Wirbel pflanzt sich in Richtung Beckenboden fort und dissipiert letztendlich. Weiters wurde ein Dämpfungsoptimum des Kugelpendels im Bereich von $$m^{*}=2{,}50$$

m

∗

=
2

,

50
beobachtet. Außerdem wurde ein Experiment von einem Zylinderpendel mit $$m^{*}=4{,}98$$

m
*

=
4,98
mittels Immersed-Boundary-Methode numerisch untersucht. Dabei wurde der Vorgang der Bildung und Ablösung bis hin zum Zerfall eines Wirbelrings beschrieben. Zusätzlich wurde bei dieser Untersuchung von Worf et al. (2022) die Bildung von Randwirbeln beobachtet, beschrieben und mit der anfänglichen Entwicklung der dreidimensionalen Strömung und „zusätzlichen Masse“ in Verbindung gebracht.
Überlegungen zur Dimensionierung und Ausführung des Systems Schwammstadt für Bäume
Authors: Zeiser Anna , Rath Sebastian , Grimm Karl , Schmidt Stefan , Klammler Gernot , Zimmermann Daniel , Murer Erwin , Roth Thomas , Strauss Peter , Weninger Thomas 
Published: June 2023

ZusammenfassungDas System Schwammstadt für Baume ist eine spezielle blau-grüne Infrastrukturmaßnahme, die neben dem dezentralen Rückhalt von Niederschlagswasser im verbauten Siedlungsraum vor allem das Potenzial und den Fokus hat, die Vitalität und die Wachstumschancen von Bäumen maßgeblich zu verbessern. Obwohl bereits einige Projekte dieser Art in Österreich umgesetzt wurden, gibt es noch viele offene Fragen und Unklarheiten zur Dimensionierung, Planung und Ausführung des Systems und vor allem Potenzial für dessen Optimierung, sodass seine Multifunktionalität in größtmöglichem Ausmaß erfüllt werden kann. Basierend auf Erkenntnissen aus bodenhydrologischen Laboruntersuchungen des Schwammstadtsubstrats und aus etablierten und bereits mehrjährig betriebenen Monitoringprojekten im Reallabor- und Straßenraummaßstab beschreibt die vorliegende Arbeit die neuralgischen Elemente und Fehlerquellen auf der Basis einer konzeptionellen Analyse der stattfindenden hydrologischen Prozesse. Sie soll aufzeigen, worauf bei der Etablierung eines solchen Systems geachtet werden soll, um neben der Konstruktion eines unterirdischen Retentionsraums die Versorgung des Baums als zentrales Element mitzudenken. Zusätzlich werden verschiedene bekannte Fehler bei der Ausführung aufgezeigt, welche die hydrologische Funktionalität maßgeblich beeinflussen können. Die vorliegenden Ergebnisse und Gedanken sollen Anstoß zur Diskussion sein und in laufenden und zukünftigen Projektvorhaben als Stütze dienen.
Einblicke in hydrodynamische und morphodynamische Modellierungen in der Donau
Authors: Glas Martin , Tritthart Michael , Pessenlehner Sebastian , Ando Marek , Lukac Miroslav , Baranya Sándor , Kenderessy Pavol , Rindler Rolf , Haimann Marlene , Gmeiner Philipp , Liedermann Marcel , Mravcova Katarina , Holubova Katarina , Habersack Helmut 
Published: June 2023

ZusammenfassungNumerische Modelle stellen ein wichtiges Werkzeug zur Analyse und Bewertung von Gewässerprozessen sowie von flussbaulichen Maßnahmen dar. In den beiden Projekten DREAM SK-AT (Interreg V‑A Slowakei – Österreich) und SEDDON II (Interreg V‑A Österreich – Ungarn) wurden Nutzungsansprüche bezüglich Wasserkraft, Hochwasser, Schifffahrt, Ökologie und Trinkwasser analysiert und anschließend mittels numerischer Modelle unter Zuhilfenahme von Feldmessungen und physikalischen Experimenten in Österreich, Slowakei und Ungarn untersucht. In dieser Studie wurden an der Donau in Österreich und in der österreichisch-slowakischen Grenzstrecke beispielhaft morphologische Eigenschaften, Geschiebemanagementmaßnahmen (Buhnen, Geschiebezugabe) sowie eine verbesserte Rauigkeitsermittlung aus Luftbildaufnahmen untersucht. Unterschiede zwischen der frei fließenden Strecke östlich von Wien und der vom Rückstau des Kraftwerks Gabčíkovo beeinflussten Strecke wurden numerisch bezüglich Geschiebetransport und Morphodynamik gefunden. Buhnen wurden als wichtige Stellschraube für die Erreichung eines morphologischen Gleichgewichts anhand einer nachträglichen Bewertung von früheren Pilotmaßnahmen und anhand weiterer Szenarioanalysen identifiziert. Die erste Modellierung einer Geschiebezugabe im numerischen Sedimenttransportmodell sowie die Rauigkeitsermittlung mittels Luftbildern für die Präzisierung von hydrodynamischen Modellen in Seitenarmen wurden erfolgreich getestet. Die Ergebnisse und die angewendeten numerischen Werkzeuge aus dieser Studie stellen eine wichtige Grundlage für die Planung und Bewertung künftiger flussbaulicher Maßnahmen, vor allem in Hinblick auf die Anpassung an den Klimawandel sowie die Verbesserung der Biodiversität dar.
Parameter based definition of eccentric cycloid gearings
Authors: Landler Stefan , Trübswetter Maximilian , Otto Michael , Stahl Karsten 
Published: June 2023

AbstractCurrent challenges for today’s industry are an increase in gear ratio in one stage, an increase in load capacity as well as an increase in efficiency compared to standard gears. The standard tooth profile for cylindrical gears is an involute. This tooth profile has certain limits for external gearings regarding its geometry, e.g., undercutting and a small radius of curvature near the base circle. Special gearings overcome these limits and offer an enormous potential in gear design through their adapted profile geometries. New manufacturing possibilities for gears, such as additive manufacturing or 5‑axis milling, mean that special gears can also be produced economically.In comparison to involute gears the description of non-involute gears is often not standardized and parameters describing the geometry are not commonly defined. Thus, it is not possible to adequately determine the corresponding properties. One of these special tooth profiles is the eccentric cycloid gearing (EC gearing), in which a circular profile rolls with a profile of a trochoid equidistant. This flank geometry can provide advantages over the standard involute in certain applications.This study introduces a geometric description of the EC gearing, which is based on a defined set of parameters. Besides the geometrical parameters, parameters describing the characteristics of the gearing are proposed in accordance with the description of involute gears. This parametric description of the EC gearing enables an analytical determination of the flank, the contact geometry and load-free characteristics. With the parametric description shown and the variation of the geometry possible with it, gearings suitable for practical applications can be generated.