111 research outputs found
Phyllodinychus Hirschmann 1979
No full textPhyllodinychus Hirschmann, 1979 Phyllodinychus Trägårdh, 1943: 3 (nomen nudum) Phyllodinychus Hirschmann, 1979 b: 60. Type species Dinychus tetraphyllus Berlese, 1903: 247, designated by Hirschmann, 1979 b: 60. Notes. Phyllodinychus Trägårdh, 1943 is a nomen nudum because the author did not designate a type species.Published as part of Halliday, R. B., 2015, Catalogue of genera and their type species in the mite Suborder Uropodina (Acari: Mesostigmata), pp. 101-147 in Zootaxa 3972 (2) on page 125, DOI: 10.11646/zootaxa.3972.2.1, http://zenodo.org/record/23277
Biotransformation of jatrophone by Aspergillus niger ATCC 16404
No full textSchmeda-Hirschmann,G. (reprint author). Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile
4-Methyl-1-hepten-3-one, the Defensive Compound from Agathemera elegans (Philippi) (Phasmatidae) Insecta
No full textSchmeda-Hirschmann,G. (reprint author). Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, ChileInsects of the genus Agathemera (Phasmatidae) live in the Chilean Andes over 1500 m
above sea level. On disturbing, the insects release a spray that can cause temporary blindness in humans. Very little is known on the composition of chemicals used for defense by South American phasmids. Here we show that both female and male defensive secretion of Agathemera
elegans is made up of 4-methyl-1-hepten-3-one. The compound is reported for the first
time as a natural product
Price-Optimized heat pump operation considering LV distribution grid constraints
No full textRising usage of heat pumps (HPs) for heating in buildings can overload lowvoltage (LV) distribution grids, threatening grid stability. The German Federal Grid Agency proposed solutions based on § 14a EnWG with reactive measures from the DSO to address overloading by reducing the power to a minimum of 4.2 kW. This study proposes a preventive control strategy for HPs integrated with Home Energy Management Systems (HEMS). The objective is to minimize household electricity costs while preventing overloading through time-dependent power reductions. Unlike most existing solutions, this approach proactively reduces HP power consumption based on predicted grid load. Simulations were conducted using a combination of tools (pandapower, microSCOPE, pandaprosumer) to evaluate the effectiveness of the proposed control strategy. The simulations compared scenarios with and without the control strategy, considering different HP sizes, thermal storage sizes, and sensitivity analysis. The results demonstrate the functionality of the preventive control strategy in reducing transformer overloading. However, the effectiveness is limited during long periods with particularly low temperatures. Also, it is influenced by factors such as HP size relative to building heat load and thermal storage capacity. Further research is needed to generalize the findings and include more factors
Schwimmstunde
No full textTitre : Schwimmstunde (Leçon de natation) Réalisateur : Katja Benrath Scénariste : Julia Drache Année : 2015 Durée : 6'02 Pays : Allemagne Langue : allemand Genre : fiction Couleur/Noir et blanc : noir et blanc Distribution/casting : Sema Meray , Aykut Kayacik Musique : Florian Hirschmann Synopsis : Le jour où Ozan découvre un burkini mouillé sur son balcon, il réagit avec suspicion. Son épouse Elif prendrait-elle des cours de natation en secret ? By the time Elifs Husband, Ozan, finds a ..
One size does not fit all: Sustainable innovation, climate policy, and startups' growth aspirations
No full textpeer reviewedPrior research suggests that the growth aspirations of startups are critical to their success. Meanwhile, as concerns about our natural environment and social injustices grow, sustainable innovations from startups seeking to address these issues become more urgent. Thus far, however, previous research has paid little attention to how the successful introduction of sustainable innovations affects the development of startups, in particular, in the form of their resulting growth aspirations. In this study, we empirically explore the relationship between sustainable innovation and startups' growth aspirations, and, drawing on institutional theory, how climate policy moderates this relationship. By investigating a sample of 1430 startups from 32 countries from the Flash Eurobarometer, we find that startups that have introduced a sustainable innovation in the past 12 months have higher growth aspirations. Additionally, our results show that stronger climate policy negatively moderates this relationship. Our findings offer a set of concrete implications for research and practice
Chronischer Stress im Nachwuchsleistungssport. Eine empirische Studie an bayerischen Eliteschulen des Sports (EdS)
No full textEine duale Karriere stellt eine Quelle vielfältiger Anforderungen und Belastungen dar. Im Rahmen dieser Studie soll geklärt werden, ob und in welchem Ausmaß jugendliche NachwuchsleistungssportlerInnen in Bayern ein chronisches Stressempfinden aufweisen. Multivariate Varianzanalysen ergaben eine überdurchschnittliche Stressbelastung der AthletenInnen. Zudem erwiesen sich das schulische Selbstkonzept, der totale Effekt des globalen Selbstwerts sowie die Fürsorglichkeit des Trainers als bedeutendste Ressourcen. Die Ergebnisse dieser Studie geben Anlass für eine regelmäßige Stressdiagnose und der Implementation entsprechender Präventionsmaßnahmen im bayerischen Nachwuchsleistungssport
Secondary metabolites from endophytic fungi isolated from the Chilean gymnosperm Prumnopitys andina (Lleuque)
No full textSchmeda-Hirschmann, G. (reprint author), Hormazabal E, Astudillo L. Laboratorio de Química de Productos Naturales Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla Talca, 747, Chile.
Rodriguez J.; Theoduloz, C. Departamento de Ciencias Básicas Biomédicas, Facultad de Ciencias de la Salud, Universidad de Talca, Casilla Talca, 747, Chile.Two endophytic fungi isolated from the phloem of the Chilean gymnosperm Prumnopitys andinawere cultured in liquid potato-dextrose medium. The secondary metabolites were isolated and identified by spectroscopic methods. The fungus E-3 which could not be identified yielded 4-(2-hydroxyethyl)phenol, p-hydroxybenzaldehyde and the isochromanone mellein. The second fungus, identified as Penicillium janczewskii K.M. Zalessky yielded peniprequinolone and gliovictin, reported for the first time for this species. This is the first report on secondary metabolites produced by endophytic fungi from Chilean gymnosperms
Direct characterisation of phenolic antioxidants in infusions from four Mapuche medicinal plants by liquid chromatography with diode array detection (HPLC-DAD) and electrospray ionisation tandem mass spectrometry (HPLC-ESI-MS)
No full textSchmeda-Hirschmann, G (reprint author), Univ Talca, Lab Quim Prod Nat, Inst Quim Recursos Nat, Casilla 747, Talca, Chile.A simple, fast and direct method was developed for the qualitative analysis of phenolic constituents from infusions of Mapuche medicinal plants. Teas made of Linum chamissonis Schiede, Quinchamalium chilensis Mol., Adesmia emarginata Clos. and Escallonia illinita K. Presl. were analysed by high-performance liquid chromatography with diode array detector (HPLC-DAD) and electrospray mass spectrometry (ESI-MS). This technique allowed for the first time the tentative identification of 16 phenolic compounds in E. illinita, 27 in Q. chilensis, 10 in L chamissonis and 19 in A. emarginata. The compounds were mainly phenolic acids, flavonoid glycosides, anthocyanins and tannins. The total phenolic and flavonoid content of the infusions was assessed as well as the free radical scavenging capacity measured by the bleaching of a solution of the 2,2-diphenyl-1-picrylhydrazyl (DPPH(-)) radical. From the four species, Q. chilensis exhibited the strongest antioxidant activity with highest total phenolic and flavonoid content. (C) 2011 Elsevier Ltd. All rights reserve
Was ist eine Familienstiftung?
No full textIn der Datenbank des Bundesverbands Deutscher Stiftungen existieren aktuell 620 Familienstiftungen und einige dieser Stiftungen halten Anteile an großen Unternehmen in Deutschland, wie bspw. Bertelsmann, Fielmann oder Würth. Familienstiftungen können in zahlreichen Fällen ein geeignetes Instrument für die Unternehmensnachfolge darstellen, sind für viele Unternehmer aufgrund ihrer vielfältigen Erscheinungsformen jedoch eine „Black Box“. In diesem Kapitel werden die wichtigsten Eigenschaften von Familienstiftungen erläutert, die als Grundlage für das Verständnis dieses Buches dienen sollen. Nach einer kurzen definitorischen Abgrenzung von Familienstiftungen bietet das Kapitel einen ersten Einblick in die Errichtung einer Familienstiftung. Innerhalb dieser liegt ein besonderer Fokus auf den drei Wesensmerkmalen: Stiftungszweck, Stiftungsvermögen und Organisation
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