1,721,029 research outputs found
I have the touch – evidence for considerable N transfer from peas to oats by rhizodeposition
No full textAbstract Aims The current study quantified the carbon (C) and nitrogen (N) transfer from peas to oats under field conditions to assess the effects of intercropping. The data obtained were compared with previously published pot and field experiments. Methods Pea ( Pisum sativum L. cv. Santana) and oat ( Avena sativa L. cv Dominik) plants were grown as intercrops for 105 days. Pea plants were labelled with a solution of 2% 13 C glucose (99 atom%) and 0.5% 15 N urea (95 atom%), using the cotton wick technique. Results Pea rhizodeposits reached 540 kg C ha −1 and 17 kg N ha −1 . CdfR (C derived from rhizodeposition) and NdfR corresponded to a proportion of 18.2 and 12.7%, respectively, of total pea biomass C and N. In the intercropped oat plants, only 0.6% of the total pea CdfR amount was found, but nearly 30% of the total pea NdfR amount. Conclusions CdfR and NdfR as proportion of total pea biomass C and N, respectively, were 2.5 times higher in peas intercropped with oat plants than in sole-cropped pea plants, comparing the current results with those from previously published pot and field experiments. Future studies on intercropping should consider root formation and rhizodeposition more often
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Konflikte und Auseinandersetzungen – Conflicts and Struggles: Editorial
Full text linkWenn zwei sich streiten, freut sich der dritte,
wer anderen eine Grube gräbt, fällt selbst
hinein, Verbrechen lohnt sich nicht – so
klingen wohlgemeinte Ratschläge, teilweise
sehr alt, aus dem Volksmund oder von Behörden.
Konflikte machen einen guten Teil
unseres Lebens aus.
Blicken wir auf das weite Feld der Wissenschaft,
bieten sich mannigfaltige Forschungsfelder,
die Feindschaften, Konflikte
und Opposition zum Fokus des Interesses
haben.
In der Diskussion steht der Ausgang von Auseinandersetzungen, aber
auch die Formen von Opposition und ihre Beteiligten selbst
'Greeks' in a Demotic List O. Lips. ÄMUL dem. inv. 1422
Full text linkLike many other students, my first contact with Demotic studies was through Janet Johnson's introduction to Thus Wrote 'Onchsheshonqy, her Demotic Verbal System, and the first letter files of the Chicago Demotic Dictionary. To my mind, these publications remain the best course materials for beginners studying ancient Egyptian languages - and this why the students in my master class are treated to the whole package from Chicago as well. I feel honored to contribute to a festschrift in her honor
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Lepper, Verena M. ; Hafemann, I. (Hrsg.): Karl Richard Lepsius : der Begründer der deutschen Ägyptologie. Berlin, 2012 (Rezension)
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