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Aufsatz
A Critical Review and Assessment of Different Thermoviscoplastic Material Models for Simultaneous Hot/Cold Forging Analysis
(2020-05-26)
The simultaneous hot/cold forging is an innovative production process, taking advantage of the high accuracy for cold forming and low forces for hot forming. However, the choice of a suitable material model for such a large temperature range is a difficult issue and insufficiently regarded. Hence, the aim of this contribution is a critical review and assessment of the prediction capability and accuracy of three already existing thermo-viscoplasticity models. Therefore, the simulation results of the Bammann, Chiesa ...
Aufsatz
Karin Bock, Nina Göddertz, Franziska Heyden, Miriam Mauritz (Hrsg.) (2019). Zugänge zur Kinderladenbewegung
(2020-06-16)
Der Sammelband entstand als neueste Publikation aus dem Projekt „Die Kinderladenbewegung: Biographische Auswirkungen und gesellschaftspolitische Einflüsse institutioneller Erziehungsarrangements“ und rahmt diesen Forschungszusammenhang auf unkonventionelle Art. Ihn kennzeichnet vor allem ein sehr breites Spektrum an Artikeln, die 1968 und die Kinderladenbewegung aus unterschiedlichsten Perspektiven beleuchten, womit er auch dem Anspruch der Herausgeber_innen, die „(…) Vielschichtigkeit und Verschiedenheit der Zugänge ...
Aufsatz
Fecal Cortisol Metabolites in Dairy Cows: A Cross-Sectional Exploration of Associations with Animal, Stockperson, and Farm Characteristics
(2020-10-01)
To date, little is known about influences on cows’ physiological stress levels on farms. The present study explored associations of fecal cortisol metabolite concentrations (FCM) with (1) farm factors including human–animal contact, (2) cows’ fear behaviors towards humans, and (3) milk production and udder health, involving 25 dairy farms and repeated fecal samples (n = 2625) from 674 focal cows. Farm factors via interviews and observations, avoidance distance (AD) and qualitative behavior assessment (QBA) during a ...
Aufsatz
Oxidation Reactions of the N-Heterocyclic Stannylenes [𝘰-C₆H₄ (NSi𝑡BuMe₂)]₂Sn and [{Fe(η⁵ -C₅H₄ -NSi𝑡BuMe₂)₂}Sn] with Sulfur, Selenium, and Diphenyl Diselenide
(2020-01-27)
The N‐heterocyclic stannylenes [{Fe(η$^5$‐C$_5$H$_4$‐NSi𝑡 BuMe$_2$)$_2$}Sn] (1 ) and [𝘰‐C$_6$H$_4$(NSi𝑡 BuMe$_2$)]$_2$Sn (2 ) were prepared in one‐pot reactions from SnCl$_2$, LiN(SiMe$_3$)$_2$, and the corresponding diamine, viz. [Fe(η$^5$‐C$_5$H$_4$‐NHSi𝑡 BuMe$_2$)$_2$] and 𝘰‐C$_6$H$_4$(NSiH𝘵 BuMe$_2$)$_2$, respectively. Oxidative addition reactions of 1 and 2 with S$_8$ and Se$_8$, respectively, afforded the corresponding 1,3,2,4‐dithiadistannetanes ((1 S$_2$), (2 S$_2$)), and 1,3,2,4‐diselenadistannetanes ...
Aufsatz
Influence of pre-drying storage time on essential oil components in dried hops (Humulus lupulus L.)
(2020-10-15)
BACKGROUND
It is well known that duration of pre-drying storage impacts on hop quality. However, little knowledge exists regarding its actual effects on valuable hop components. To investigate these effects, fresh hop cones were stored for 5 or 24 h and dried for 210 min at 65 °C thereafter. Furthermore, to understand the effect of freezing hop cones on the essential oil content, both fresh and stored samples were frozen before and after drying.
RESULTS
The results from gas chromatography analysis show an increase ...
Aufsatz
On the Influence of Microstructure on the Corrosion Behavior of Fe–Mn–Al–Ni Shape Memory Alloy in 5.0 wt% NaCl Solution
(2020-10-03)
Herein the corrosion behavior of Fe–Mn–Al–Ni shape memory alloys characterized by different microstructures in a 5.0 wt% NaCl solution is investigated. Open circuit potential and potentiodynamic polarisation tests are conducted. Generally, Fe–Mn–Al–Ni shows corrosion properties being similar to pure iron. However, the polarization curves of single crystals indicate the presence of an unstable passive system. The corrosion damage is analyzed by means of optical microscopy and electron microscopy. It is revealed that ...
Aufsatz
Inclusive Resettlement? Integration Pathways of Resettled Refugees With Disabilities in Germany and Canada
(2021-12-09)
The purpose of this article is to explore the existing intersectional knowledge on integration and resettlement of refugees with disabilities in two of the top five resettlement countries in the world, Germany and Canada. There is limited research on the intersection of migration and disability, especially in the context of refugee resettlement. Reflecting the dominant pathways of migration in each country, what little research there is focuses on asylum seekers in Germany, and immigrants in Canada. The review describes ...
Aufsatz
Knowledge Practices Within and Beyond Sharing and Commoning Urban Initiatives
(2022-04-18)
In the context of neoliberal cities, with growing levels of housing commodification and space competition, sharing and commoning urban initiatives within the larger framework of urban social movements are shaping tactics of contestation. To what extent they represent sustainable efforts to urban commons governance remains largely unexplored. This article aims therefore to contribute to better understand how practices of solidarity can be maintained beyond their first productive phase and to explore the engagement of ...
Aufsatz
Toward the Next Generation of Digitalization in Agriculture Based on Digital Twin Paradigm
(2022-01-10)
Digitalization has impacted agricultural and food production systems, and makes application of technologies and advanced data processing techniques in agricultural field possible. Digital farming aims to use available information from agricultural assets to solve several existing challenges for addressing food security, climate protection, and resource management. However, the agricultural sector is complex, dynamic, and requires sophisticated management systems. The digital approaches are expected to provide more ...
Aufsatz
Systemische, soziale und emotionale Herausforderungen und Glücksmomente im beruflichen Alltag von haupt- und nebenberuflichen YouTuber*innen
(2020-10-21)
Ziel der vorliegenden Untersuchung in der Zeitschrift Gruppe. Interaktion. Organisation (GIO) war es, die Herausforderungen und Motivationen von YouTuber*innen in ihrer Tätigkeit als Content-Creator herauszufinden und mögliche Ursachen zu benennen. Es konnte anhand von leitfadengestützten Interviews und deren Auswertung dargelegt werden, dass YouTuberinnen und YouTuber in ihrer Tätigkeit als Content Creator auf YouTube mit einem hohen Maß an systemischen, emotionalen und sozialen Belastungen konfrontiert sind. Diese ...