2024-03-28T14:34:34Zhttps://edoc.hu-berlin.de/oai/request/oai:edoc.hu-berlin.de:18452/100802020-03-07T04:17:32Zcom_18452_25col_18452_26doc-type:articletextPublicationprimusopen_accessddc:050ddc:570ddc:630ddc:580ddc:500
Einfluss der Wasserversorgung auf biomorphologische und pflanzenphysiologische Merkmale von Tomatenjungpflanzen in Holzfasersubstrat
Gruda, Nazim
Schnitzler, Wilfried H.
stress
Torfersatz
alternative substrate
free proline
soilless culture
growing media
growing medium
tomatoes
transplants
vegetable
570 Biologie
630 Landwirtschaft und verwandte Bereiche
500 Naturwissenschaften und Mathematik
580 Pflanzen (Botanik)
050 Allgemeine fortlaufende Sammelwerke
ddc:570
ddc:630
ddc:500
ddc:580
ddc:050
Recently the use of the mixture with wood fiber substrates for cultivation of vegetable transplants has received increasing attention. Several experiments were conducted to investigate the effect of water supply on bio-morphological and plant-physiological parameters of tomato transplants cultivated in pure wood fiber substrates in order to optimize cultivation. Optimal growth of transplants in these substrates requires high moisture levels. Comparing time-dependent with water-tension-dependent irrigation (φ = -30 hPa) showed that almost identical bio-morphological plant characteristics were achieved. In an ebb/flood system, irrigation pulses are recommended at φ = -30 hPa for better leaf morphological parameters and optimal root development of tomato transplants in a coarse substrate. Measurements of free proline in plants grown under these irrigation levels support these results. Critical water tension for irrigation pulses and content of free proline in tomato transplants were closely correlated (r(2)=0.95).
Peer Reviewed
2000-06-29
article
doc-type:article
0949-5460
http://edoc.hu-berlin.de/18452/10080
urn:nbn:de:kobv:11-10097287
http://dx.doi.org/10.18452/9428
ger
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät
oai:edoc.hu-berlin.de:18452/232742021-04-02T03:08:57Zcom_18452_25col_18452_26doc-type:articlestatus-type:publishedVersiontextPublicationprimusopen_accessddc:050
Timing of German onset and word boundary clusters
Brunner, Jana
Geng, Christian
Sotiropoulou, Stavroula
Gafos, Adamantios
C-center
gestural coordination
oral-laryngeal coordination
coarticulatory resistance
050 Allgemeine fortlaufende Sammelwerke
ddc:050
This publication is with permission of the rights owner freely accessible due to an alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Previous studies suggest that there are special timing relations in syllable onsets. The consonants are assumed to be timed, on the one hand, with the vocalic nucleus and, on the other hand, with each other. These competing timing relations result in the C-center effect. However, the C-center effect has not consistently been found in languages with complex onsets. Moreover, it has occasionally been found in languages disallowing complex onsets. The present study investigates onset timing in German while discussing alternative explanations (not related to bonding) for the timing patterns observed. Six German speakers were recorded via Electromagnetic Articulography. The corpus contained items with four clusters (/sk/, /kv/, /gl/, and /pl/). The clusters occur in word-initial position, word-medial position, and across a word boundary preceding different vowels. The results suggest that segmental properties (i.e., oral-laryngeal coordination, coarticulatory resistance) determine the observed timing patterns, and specifically the absence or presence of the C-center effect.
Peer Reviewed
2014-11-29
article
doc-type:article
publishedVersion
1868-6346
http://edoc.hu-berlin.de/18452/23274
urn:nbn:de:kobv:11-110-18452/23274-1
10.1515/lp-2014-0014
http://dx.doi.org/10.18452/22669
1868-6354
eng
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
Humboldt-Universität zu Berlin
oai:edoc.hu-berlin.de:18452/277712023-10-31T04:02:32Zcom_18452_25col_18452_26doc-type:articlestatus-type:publishedVersiontextPublicationprimusopen_accessddc:050
Biographical representation, from narrative to list: The evolution of curricula vitae in the humanities, 1950 to 2010
Hamann, Julian
Kaltenbrunner, Wolfgang
Categorization
Curricula Vitae
CVs
Devices
Evaluation
German studies
History
Narrative
050 Allgemeine fortlaufende Sammelwerke
ddc:050
Curricula vitae (CVs) are a crucial device for the evaluation of academic personae and biographies. They play a key role in the competitive assessments that underpin the reproduction of the academic workforce. Drawing on 80 CVs which have been part of candidates’ applications for vacant professorships, our article provides a longitudinal study of the development of CVs used by German scholars in professorial appointment procedures in the disciplines of German studies and history between 1950 and the late 2010s. The analysis reveals the evolution of CVs by tracing their various morphological shifts. We distinguish four formats throughout the period of study: CVs initially had a (1) narrative format that develops into an (2) intermediary segmented form before CVs take on a (3) list form in which biographical information congeals into distinct categories. In the 2010s, the list form develops into a (4) hyper-differentiated list form in which coherent biographical representations are finally dissolved into almost eclectic accumulations of finely grained performance categories. Against the backdrop of this finding, the contribution concludes with three general observations: First, the evolution of CVs reflects changes in the institutional environment, not least the increased competitive pressures in academic careers. Second, the evolution of biographical representations also conveys a transformation of the academic persona throughout which boundaries between personal and professional biographies are established. Third, we propose a reactivity of current list form CVs through which academics are disciplined to live up to the categories that wait to be realized in their CVs.
Peer Reviewed
2022-01-07
article
doc-type:article
publishedVersion
http://edoc.hu-berlin.de/18452/27771
urn:nbn:de:kobv:11-110-18452/27771-4
http://dx.doi.org/10.18452/27102
1471-5449
10.1093/reseval/rvab040
eng
(CC BY-NC-ND 4.0) Attribution-NonCommercial-NoDerivatives 4.0 International
https://creativecommons.org/licenses/by-nc-nd/4.0/
application/pdf
Humboldt-Universität zu Berlin
oai:edoc.hu-berlin.de:18452/100812020-03-07T04:17:32Zcom_18452_25col_18452_26doc-type:articletextPublicationprimusopen_accessddc:050ddc:570ddc:630ddc:580ddc:500
Einfluss der Wasserversorgung von Jungpflanzen angezogen in verschiedenen Substraten und Anzuchtsystemen auf biomorphologische und pflanzenphysiologische Merkmale bei Kopfsalat
Gruda, Nazim
Schnitzler, Wilfried H.
Stress
Holzfasersubstrat
Kopfsalatjungpflanze
Prolin
Torfersatz
Gemüse
Jungpflanze
Wasser
stress
proline
growing media
growing medium
peat substituite
vegetable
lettuce seedling
water
wood fiber substrate
soilless culture
570 Biologie
630 Landwirtschaft und verwandte Bereiche
500 Naturwissenschaften und Mathematik
580 Pflanzen (Botanik)
050 Allgemeine fortlaufende Sammelwerke
ddc:570
ddc:630
ddc:500
ddc:580
ddc:050
Wood fiber substrates perform well for lettuce seedlings production in speedling trays compared to standard commercially used press pots as well as growing media on peat base. Wood fibers contain a high air volume to allow higher levels of water tension without danger of water saturation in the substrate. For optimum growth they require a "high" matric potential. For cultivation of lettuce seedlings irrigation pulses at phi = -30 to -50 hPa are recommended in ebb and flood cultivation systems. This will provide good rooting and the least amount of proline, an indicator for plant stress. Accumulation of proline in lettuce seedlings could only be proved under conditions of visible stress symptoms. Not only water tension, but also the substrates in raising systems influence the free content of proline. At phi = -200 hPa proline in lettuce seedlings cultivated in a peat based press pots were ca. 40 % lower compare to seedlings in a wood fiber substrate in speedling trays. The difference in proline content between well-watered and stressed seedlings was smaller than with tomato transplants. Also, the correlation between proline content of lettuce seedlings and critical water tension for irrigation pulses was lower than with tomato transplant. The lettuce plants performed well after transplanting and no differences derived from seedling-treatments were recorded.
Peer Reviewed
2000-06-29
article
doc-type:article
0949-5460
http://edoc.hu-berlin.de/18452/10081
urn:nbn:de:kobv:11-10097291
http://dx.doi.org/10.18452/9429
ger
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät
oai:edoc.hu-berlin.de:18452/100852020-03-07T04:17:33Zcom_18452_25col_18452_26doc-type:articletextPublicationprimusopen_accessddc:050ddc:570ddc:630ddc:580ddc:500
Do soilless culture systems have an influence on product quality of vegetables?
Gruda, Nazim
Gemüse
Gewächshaus
Produkt Qualität
bodenunabhängige Kulturverfahren
alternative Substrate
Tomate
Umwelt
gesundheitsfördernder Substanzen
EC-Wert
Hydroponie
growing media
growing medium
soilless culture
alternative Substrates
wood fiber substrates
tomato
environment
health-promoting compounds
EC-value
hydroponic
570 Biologie
630 Landwirtschaft und verwandte Bereiche
500 Naturwissenschaften und Mathematik
580 Pflanzen (Botanik)
050 Allgemeine fortlaufende Sammelwerke
ddc:570
ddc:630
ddc:500
ddc:580
ddc:050
In the horticulture industry, the focus has traditionally been on yield. However, consumers’ interest worldwide in the quality of horticultural products has increased in the recent past and will become the driving force in the future. Soilless culture systems (SCSs), the most intensive production method in today’s horticulture industry, are based on environmentally friendly technology, which can result in higher yields, even in areas with adverse growing conditions. However, using SCSs does not automatically result in the production of high-quality vegetables. Numerous studies confirm that a SCS enables growers to produce vegetables without quality losses compared to soil cultivation. An adaptation of cultural management to the specific cultural system, as well as crop demand, can further result in the improvement of the quality of horticultural products.
Peer Reviewed
2009-05-06
article
doc-type:article
0949-5460
http://edoc.hu-berlin.de/18452/10085
urn:nbn:de:kobv:11-10097662
http://dx.doi.org/10.18452/9433
eng
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät
oai:edoc.hu-berlin.de:18452/262242023-10-31T04:05:16Zcom_18452_25col_18452_26ddc:370doc-type:articlestatus-type:publishedVersiontextPublicationprimusopen_accessddc:050
(E‑) Valuative Metrics as a Contested Field: A Comparative Analysis of the Altmetrics‑ and the Leiden Manifesto
Leckert, Max
Altmetrics
Bibliometrics
Manifesto
Quantification
Valuation
Evaluation
050 Allgemeine fortlaufende Sammelwerke
370 Bildung und Erziehung
ddc:050
ddc:370
This article comparatively analyzes two manifestos in the field of quantitative science evaluation, the Altmetrics Manifesto (AM) and the Leiden Manifesto (LM). It employs perspectives from the Sociology of (E-) Valuation to make sense of highly visible critiques that organize the current discourse. Four motifs can be reconstructed from the manifestos’ valuation strategies. The AM criticizes the confinedness of established evaluation practices and pledges for an expansion of quantitative research evaluation. The LM denounces the proliferation of ill-applied research metrics and calls for an enclosure of metric research assessment. It can be shown that these motifs are organized diametrically: The two manifestos represent opposed positions in a critical discourse on (e-) valuative metrics. They manifest quantitative science evaluation as a contested field.
Peer Reviewed
2021-10-16
article
doc-type:article
publishedVersion
http://edoc.hu-berlin.de/18452/26224
urn:nbn:de:kobv:11-110-18452/26224-9
http://dx.doi.org/10.18452/25508
1588-2861
10.1007/s11192-021-04039-1
eng
(CC BY 4.0) Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
application/pdf
Humboldt-Universität zu Berlin
oai:edoc.hu-berlin.de:18452/100792020-03-07T04:17:32Zcom_18452_25col_18452_26doc-type:articletextPublicationprimusopen_accessddc:050ddc:580ddc:500
Determination of volume weight and water content of wood fiber substrates with different methods
Gruda, Nazim
Schnitzler, Wilfried H.
growing media
organic substrate
wood fiber substrate
growing medium
ISHS method
positive pressure method
negative pressure method
500 Naturwissenschaften und Mathematik
580 Pflanzen (Botanik)
050 Allgemeine fortlaufende Sammelwerke
ddc:500
ddc:580
ddc:050
Different methods for the investigation of physical properties of wood fiber substrates and one other organic substrate were compared. The parameters volume weight and volumetric water content are discussed. The results lead to important aspects for the application of these methods to investigate wood fiber and other organic substrates. With less work and less time involved the LUFA method provides similar results as the ISHS method for the detemination of the volume weight of organic substates. To evaluate the true conditions within a pot only the "pot-method" is suitable. An example for calculating the N-min-content of the substrate with volume weight obtained from different methods is given. To measure the volumetric water content on the base f a given volume weight either a modified ISHS method, the positive or the negative pressure method can be used. Close relationships have been obtained between the modified ISHS method and the other two methods at pF = 1.0, 1.7 and 2.0. A prerequisite for good results in measurments of substrate mixtures is a homogeneous material. Thus, independent of laboratory facilities investigation on substrat€s can be done at least for physical properties, where the ISHS method has not been introduced.
Peer Reviewed
1999-07-08
article
doc-type:article
0938-0337
http://edoc.hu-berlin.de/18452/10079
urn:nbn:de:kobv:11-10097271
http://dx.doi.org/10.18452/9427
eng
http://rightsstatements.org/vocab/InC/1.0/
application/pdf
Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät
oai:edoc.hu-berlin.de:18452/226092023-10-31T04:05:28Zcom_18452_25col_18452_26doc-type:articlestatus-type:publishedVersiontextPublicationprimusopen_accessddc:050ddc:610
Ecology of West Nile Virus in the Danube Delta, Romania: Phylogeography, Xenosurveillance and Mosquito Host-Feeding Patterns
Tomazatos, Alexandru
Jansen, Stephanie
Pfister, Stefan
Török, Edina
Maranda, Iulia
Horváth, Cintia
Keresztes, Lujza
Spînu, Marina
Tannich, Egbert
Jöst, Hanna
Schmidt-Chanasit, Jonas
Cadar, Daniel
Lühken, Renke
West Nile virus
virus genetics
phylogeography
xenosurveillance
blood meal
050 Allgemeine fortlaufende Sammelwerke
610 Medizin und Gesundheit
ddc:050
ddc:610
The ecology of West Nile virus (WNV) in the Danube Delta Biosphere Reserve (Romania) was investigated by combining studies on the virus genetics, phylogeography, xenosurveillance and host-feeding patterns of mosquitoes. Between 2014 and 2016, 655,667 unfed and 3842 engorged mosquito females were collected from four sampling sites. Blood-fed mosquitoes were negative for WNV-RNA, but two pools of unfed Culex pipiens s.l./torrentium collected in 2014 were tested positive. Our results suggest that Romania experienced at least two separate WNV lineage 2 introductions: from Africa into Danube Delta and from Greece into southeastern Romania in the 1990s and early 2000s, respectively. The genetic diversity of WNV in Romania is primarily shaped by in situ evolution. WNV-specific antibodies were detected for 19 blood-meals from dogs and horses, but not from birds or humans. The hosts of mosquitoes were dominated by non-human mammals (19 species), followed by human and birds (23 species). Thereby, the catholic host-feeding pattern of Culex pipiens s.l./torrentium with a relatively high proportion of birds indicates the species' importance as a potential bridge vector. The low virus prevalence in combination with WNV-specific antibodies indicate continuous, but low activity of WNV in the Danube Delta during the study period.
Peer Reviewed
2019-12-14
article
doc-type:article
publishedVersion
http://edoc.hu-berlin.de/18452/22609
urn:nbn:de:kobv:11-110-18452/22609-9
10.3390/v11121159
http://dx.doi.org/10.18452/21883
1999-4915
eng
(CC BY 4.0) Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
application/pdf
Humboldt-Universität zu Berlin
oai:edoc.hu-berlin.de:18452/290652024-03-27T02:07:27Zcom_18452_25col_18452_26doc-type:articlestatus-type:publishedVersiontextPublicationprimusopen_accessddc:050ddc:100
Die innere Dynamik von selbst- und umweltbezogenen Tugenden im tugendhaften Akteur
Runge, Richard Friedrich
Biozentrismus
Egoismus-Vorwurf
Ethischer Naturalismus
Ökologische Tugendethik
Partikularismus
Biocentrism
Charge of Egoism
Environmental Virtue Ethics
Erich Fromm
Ethical Naturalism
Particularism
100 Philosophie, Parapsychologie und Okkultismus, Psychologie
050 Allgemeine fortlaufende Sammelwerke
ddc:100
ddc:050
Die eudaimonistische Tugendethik sieht sich, was ihre innere Struktur anbelangt, standardmäßig mit den Vorwürfen des Egoismus und Anthropozentrismus konfrontiert, was auch das Projekt einer ökologischen Tugendethik zu gefährden scheint. Der vorliegende Artikel versucht, ausgehend von der Tugendethik Erich Fromms, eine neue Perspektive auf diese Standardvorwürfe zu entwickeln, indem er den theoretischen Implikationen nachgeht, die die Anerkennung der Biophilie – der Liebe zum Leben – als eine der Tugenden des Menschen für den Frommschen Ansatz hat. Die zunächst noch exegetisch ausgerichtete Diskussion der werkinternen Relation von humanistischer und biophiler Ethik bei Erich Fromm leitet schließlich zu einer stärker systematisch ausgerichteten Diskussion der inneren Dynamik von selbst- und umweltbezogenen Tugenden im tugendhaften Akteur über. In diesem Zuge wird deutlich gemacht, dass das selbstbezogene Streben nach eigener Eudaimonie und das umweltbezogene Streben nach der Förderung des Objekts der eigenen Liebe zwar durchaus miteinander in einen Konflikt geraten können, dass dieser Konflikt aber nicht zur Selbstauslöschung der Tugendethik führt, sondern stattdessen im tugendhaften Akteur eine produktive Dynamik entfaltet. Die klassische Gegenüberstellung von Anthropozentrismus und Biozentrismus innerhalb der Ethik lässt sich auf diese Weise unterlaufen.
The inner structure of eudaimonistic virtue ethics has standardly been charged with egoism and anthropocentrism, which also seems to endanger the project of an environmental virtue ethics. Proceeding from the virtue ethics of Erich Fromm, the present article tries to develop a new perspective on these standard accusations by discussing the theoretical implications of the recognition of biophilia – the love of life – as a human virtue in the Frommian approach. The initially exegetically oriented discussion of the internal relation of humanistic and biophilic ethics in Erich Fromm’s work eventually leads to a more systematically oriented discussion of the inner dynamic of self- and environment-related virtues in the virtuous agent. In the course of this discussion, it will become clear that the self-related striving to attain eudaimonia and the environment-related striving to promote the object of one’s own love can get into a conflict with one another. This conflict, however, does not lead to the self-effacement of virtue ethics but unfolds a productive dynamic in the virtuous agent. In this way, the classical juxtaposition of anthropocentrism and biocentrism within ethics can be avoided.
Peer Reviewed
2022-02-07
article
doc-type:article
publishedVersion
http://edoc.hu-berlin.de/18452/29065
urn:nbn:de:kobv:11-110-18452/29065-9
http://dx.doi.org/10.18452/28434
2522-0071
10.1007/s42048-021-00114-7
ger
(CC BY 4.0) Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
application/pdf
Humboldt-Universität zu Berlin