Refine
Has Fulltext
- no (1398) (remove)
Year of publication
- 2017 (1398) (remove)
Document Type
- Article (1398) (remove)
Is part of the Bibliography
- yes (1398)
Keywords
- stars: massive (11)
- Germany (10)
- Holocene (9)
- German (8)
- stars: early-type (8)
- adolescence (7)
- stars: winds, outflows (7)
- Arabidopsis thaliana (6)
- Climate change (6)
- Depression (6)
Institute
- Institut für Biochemie und Biologie (254)
- Institut für Geowissenschaften (229)
- Institut für Physik und Astronomie (215)
- Institut für Chemie (115)
- Department Psychologie (97)
- Department Sport- und Gesundheitswissenschaften (70)
- Institut für Ernährungswissenschaft (47)
- Institut für Mathematik (44)
- Department Linguistik (43)
- Wirtschaftswissenschaften (24)
Identification of Endodormancy Release for Cherries (Prunus Avium L.) by
Abscisic Acid and Sugars
(2017)
In order to develop reliable and physiologically sound models for the plant development in spring, the date of endodormancy release is always a crucial and mostly unknown model parameter. Until present, classical approaches - such as climate chamber experiments - are used to derive this unknown parameter. In these experiments, progressive plant development or significant changes in bud’s fresh weight or water content are measurable markers for dormancy release. This study presents an alternative approach, which is based on four well-known metabolites. For 5 seasons (2011/12-2015/16), the content of abscisic acid (ABA) and sugars such as fructose, sucrose and glucose in sweet cherry flower buds (cultivar ‘Summit’) were weekly analysed between beginning of October and April. These data allow comparing the annual course of these metabolites with the date of endodormancy release, derived from a classical climate chamber experiment, published in a previous study. Results showed that ABA and sucrose are two important metabolites which can help to identify the date of endodormancy release of sweet cherries. On average, ABA content reached a plateau of 5.65 μg g-1 DW-1 during endodormancy, which was maintained for 3-6 weeks. The significant reduction of the ABA content after this period to 4.41 μg g-1 DW-1 on average during ecodormancy was nearly in agreement with the date of endodormancy release of ‘Summit’ on 28 November (332 DOY).
The annual cycle of sucrose, which has a cryoprotective effect during winter, is well comprehensible and showed a close relationship to
the annual course of minimum air temperature after leaf fall(r=-0.90). The nearly constant level of sucrose during ecodormancy (21.0 mg g-1 DW-1, 5 yr. mean) did not only allow deriving the date of endodormancy release but can also be helpful to define the beginning of ontogenetic development.
El centenario de la publicación del Curso de lingüística general (1916) de Saussure nos ha invitado a reexaminar la importancia de esta obra para instaurar una lingüística integrada en la semiología. Indudablemente la simplificación de las ideas de Saussure y la exageración de su concepto sistémico del lenguaje llevadas a cabo por los editores Bally y Sechehaye han contribuido a la acogida exitosa de la obra. En esta contribución, se propone, primero, introducir el concepto de ‘series de textos’, antes de analizar una serie “olvidada” y una nueva serie de obras por medio de las cuales se introdujeron conceptos semióticos en la época dominante de la lingüística histórica. En el análisis de estas dos series se pondrá el foco en el concepto de la arbitrariedad del signo.
Der vorliegende Beitrag beschäftigt sich mit einem Gedicht Heiner Müllers, das dieser in unmittelbarer Reaktion auf den Zusammenbruch des osteuropäischen Sozialismus verfasste. Da dieses Gedicht in mehreren Etappen geschrieben und publiziert wurde, gibt es Einblicke in die von Umbruch und Verwerfungen gekennzeichnete Entstehungssituation, die der Beitrag erläutern will.
Es kann gleichermaßen als eine vorläufige Lebensbilanz des Autors gelesen werden, wo sich selbstkritische Äußerungen zu den Irrtümern mit denen einer geschichtlichen Epoche kreuzen. Da die eingenommene Haltung zu diesem komplexen Veränderungsprozess und die Bewertung dieser Wende durch den Autor auch wiederum einer Selbstkritik unterworfen wurde, versucht der Beitrag, einen Einblick in die geschichtsphilosophische und ästhetische Werkstatt des Autors Heiner Müller zu geben.
From the 1940s well into the 1960s, a new sociocultural constellation let American Jews redefine their relationship to the religious tradition. This article analyzes the response of a religious elite of rabbis and intellectuals to this process, which was driven by various factors. Many American Jews were at least one generation away from traditional Judaism, which seemed out of place in postwar America. Liberal Judaism, with its narrow concept of religion, on the other hand, while fitting a larger social consensus, did not satiate many Jews' spiritual and identity needs. Sensing this deficit, rabbis and other religious thinkers explored broader concepts of Judaism. Religious journals that sprang up in the postwar decades served as vehicles for the attempt to understand Judaism in broader, cultural terms, while preserving a religious core. The article shows how in this search religious thinkers turned to the Eastern European past as a resource. As other groups similarly tried to mine this past for the sake of their present agendas, its reconstruction became a key process in the transformation of postwar American Judaism and its relationship to the tradition.
Background:
Endomyocardial biopsy is considered as the gold standard in patients with suspected myocarditis. We aimed to evaluate the impact of bioptic findings on prediction of successful return to work.
Methods:
In 1153 patients (48.9 ± 12.4 years, 66.2% male), who were hospitalized due to symptoms of left heart failure between 2005 and 2012, an endomyocardial biopsy was performed. Routine clinical and laboratory data, sociodemographic parameters, and noninvasive and invasive cardiac variables including endomyocardial biopsy were registered. Data were linked with return to work data from the German statutory pension insurance program and analyzed by Cox regression.
Results:
A total of 220 patients had a complete data set of hospital and insurance information. Three quarters of patients were virus-positive (54.2% parvovirus B19, other or mixed infection 16.7%). Mean invasive left ventricular ejection fraction was 47.1% ± 18.6% (left ventricular ejection fraction <45% in 46.3%). Return to work was achieved after a mean interval of 168.8 ± 347.7 days in 220 patients (after 6, 12, and 24 months in 61.3%, 72.2%, and 76.4%). In multivariate regression analysis, only age (per 10 years, hazard ratio, 1.27; 95% confidence interval, 1.10–1.46; p = 0.001) and left ventricular ejection fraction (per 5% increase, hazard ratio, 1.07; 95% confidence interval, 1.03–1.12; p = 0.002) were associated with increased, elevated work intensity (heavy vs light, congestive heart failure, 0.58; 95% confidence interval, 0.34–0.99; p < 0.049) with decreased probability of return to work. None of the endomyocardial biopsy–derived parameters was significantly associated with return to work in the total group as well as in the subgroup of patients with biopsy-proven myocarditis.
Conclusion:
Added to established predictors, bioptic data demonstrated no additional impact for return to work probability. Thus, socio-medical evaluation of patients with suspected myocarditis furthermore remains an individually oriented process based primarily on clinical and functional parameters.