Search results for "Dew"
showing 10 items of 217 documents
Sesquiterpenes VOCs are markers of elicitation by sulfated laminarine in grapevine
2016
International audience
Image analysis methods for assessment of H2O2 production and Plasmopara viticola development in grapevine leaves: application to the evaluation of re…
2014
Sesquiterpene volatile organic compounds (VOCs) are markers of elicitation by sulfated laminarine in grapevine
2015
SPE IPM UB CT1; International audience; Inducing resistance in plants by the application of elicitors of defense reactions is an attractive plant protection strategy, particularly for grapevine (Vitis vinifera), which is susceptible to severe fungal diseases. Although induced resistance (IR) can be successful under controlled conditions, in most cases, IR is not sufficiently effective for practical disease control under outdoor conditions. Progress in the application of IR requires a better understanding of grapevine defense mechanisms and the ability to monitor defense markers to identify factors, such as physiological and environmental factors, that can impact IR in the vineyard. Volatile…
Aux Etats-Unis, l'élève entre en démocratie
2007
Ancien titre : Durkheim, Dewey, l'école et la citoyenneté; Cette interview compare la conception de la citoyenneté développée par Dewey et Durkheim et leurs impacts respectifs sur l'éducation à la citoyenneté que pratiquent les écoles françaises et américaines.
Les buts et les conditions de l'enseignement selon les enseignants du second degré
2011
National audience; Une enquête auprès de 700 enseignants français du second degré mesure la prégnance de deux modèles d'éducation, ceux de Durkheim et de Dewey, dans la représentation qu'ils se font des buts et des conditions de l'enseignement. Leurs représentations empruntent le plus souvent aux deux modèles, mais le centre de gravité des réponses penche légèrement du côté du modèle durkheimien. Les enseignants qui ont une conception des buts de l'enseignement plus proches du modèle de Dewey sont un peu plus favorables à l'ouverture du second degré. Ceux qui ont une conception des conditions de l'enseignement plus proches de ce modèle pensent plus souvent que leur action peut faire une dif…
Kuusi kuukautta kokemuskoulua : 4H-tapahtumatuottajavalmennus
2016
Tässä tutkimuksessa tarkastellaan aktiivista kansalaisuutta kehittävän oppimisympäristön rakentumista tapahtumatuottajavalmennuksessa. Ajankohtaisuutta tutkimukselleni tuo työelämän muutos joka heijastuu myös oppimiselle asetettaviin vaatimuksiin. Yhteiskunnallisen kehyksen tutkimukselle asettaa uusi opetussuunnitelma. Aineistoni pohjautuu osallistuvaan havainnointiin ja kahteen erilliseen lomakekyselyyn. Aineisto on analysoitu sisällönanalyysillä. Tutkimuskysymykseni ovat: millainen 4H:n tapahtumatuottajavalmennus on oppimisympäristönä sekä miten oppimisympäristö edistää aktiivista kansalaisuutta. Analyysissä havaitsin oppimisympäristön rakentamisessa olennaiseksi a…
Search for intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network
2019
Gravitational wave astronomy has been firmly established with the detection of gravitational waves from the merger of ten stellar mass binary black holes and a neutron star binary. This paper reports on the all-sky search for gravitational waves from intermediate mass black hole binaries in the first and second observing runs of the Advanced LIGO and Virgo network. The search uses three independent algorithms: two based on matched filtering of the data with waveform templates of gravitational wave signals from compact binaries, and a third, model-independent algorithm that employs no signal model for the incoming signal. No intermediate mass black hole binary event was detected in this sear…
All-sky search in early O3 LIGO data for continuous gravitational-wave signals from unknown neutron stars in binary systems
2021
Rapidly spinning neutron stars are promising sources of continuous gravitational waves. Detecting such a signal would allow probing of the physical properties of matter under extreme conditions. A significant fraction of the known pulsar population belongs to binary systems. Searching for unknown neutron stars in binary systems requires specialized algorithms to address unknown orbital frequency modulations. We present a search for continuous gravitational waves emitted by neutron stars in binary systems in early data from the third observing run of the Advanced LIGO and Advanced Virgo detectors using the semicoherent, GPU-accelerated, binaryskyhough pipeline. The search analyzes the most s…
A globally relevant stock of soil nitrogen in the Yedoma permafrost domain
2022
AbstractNitrogen regulates multiple aspects of the permafrost climate feedback, including plant growth, organic matter decomposition, and the production of the potent greenhouse gas nitrous oxide. Despite its importance, current estimates of permafrost nitrogen are highly uncertain. Here, we compiled a dataset of >2000 samples to quantify nitrogen stocks in the Yedoma domain, a region with organic-rich permafrost that contains ~25% of all permafrost carbon. We estimate that the Yedoma domain contains 41.2 gigatons of nitrogen down to ~20 metre for the deepest unit, which increases the previous estimate for the entire permafrost zone by ~46%. Approximately 90% of this nitrogen (37 gigaton…
Powdery mildew resistance genes in Latvian barley varieties
2004
Thirty-three Latvian spring barley varieties and breeding lines and 90individual progenies from these were tested at the seedling stage for their reaction to a maximum 37 isolates of Blumeria graminis f. sp. hordei. Eighteen varieties were composed of two or three lines with different resistance. TwelveMl powdery mildew resistance genes(a1, a6, a7, a8, a9, a12, a13, at, g, k1, (Kr) and La) and four Ml genes closely linked to the Mla locus [a(Al2), a(No3), a(Em2) and a(Ru3)] were found. Mla8, Mlg and Mlk1 were the most frequent genes that occurred among the tested genotypes. The results confirm the pedigrees of all genotypes apart from cv. Agra and the breeding line L-215.