Search results for " Production"
showing 10 items of 5274 documents
Effects of harvesting methods on seed yield and quality of Scorpiurs muricatus L..
2009
Scorpiurus muricatus L. is an annual legume, widely distributed in Mediterranean pastures, that is appreciated by farmers for its productivity, forage quality, and palatability. It is characterised by long flowering and ripening periods and by pod shedding. These characteristics cause high seed losses, which could reduce its seed harvest efficiency in terms of seed yield and quality. In this study, we investigated the effects on seed yield and quality of different harvesting methods (windrowing at different times with subsequent combining was compared with direct combining). Our results show that direct combining when the pods were fully ripened reduced pod losses compared with swathing met…
Economic Double Censorship
2020
This chapter explores the censorship impact generated by economic logic on the selection and coverage of topics in factual formats and current affairs documentaries on French television. This prelimina- ry research studies more specifically the subcontracting relationships between TV channels and production companies from semi- structured interviews with various categories of professionals (managers of TV press agencies, journalists, directors, Commissioning Editor). The analysis distinguishes two types of censorship ef- fects. The competitive relationships and the business models of the broadcasters condition their positions in the media field and thus exercise a structural censorship on t…
An integrative dual-route model of rhythm perception and production
2009
An integrative dual-route model of rhythm perception and production is proposed here. Furthermore, an empirical study illustrated in the second part of this paper provides evidence of the existence of two different cognitive pathways. The development of the model is based on fundamental psychological principles of perception, action control and relevant neurobiological findings in rhythm processing and sensorimotor synchronization. Experiments with a dual-task paradigm were used during synchronization tapping to verify the fundamental assumptions of the model. The aim was to examine whether professional drummers show a change in tapping performance when their attention is drawn to another t…
Impact of silicates and detergents on primary production and total biomass of algae in a short-term laboratory experiment
2006
Changes in biomechanics of skiing at maximal velocity caused by simulated 20 km skiing race using V2 skating technique
2018
This study investigated how the fatigue caused by a 20-km simulated skating cross-country skiing race on snow affects the final spurt performance from a biomechanical perspective. Subjects performed a 100-m maximal skiing trial before and at the end of the simulated race. Cycle characteristics, ground reaction forces from skis and poles, and muscle activity from eight muscles were recorded during each trial. Results showed that subjects were in a fatigued state after the simulated race manifested by 11.6% lower skiing speed (P<.01). The lower skiing speed was related to an 8.0% decrease in cycle rate (P<.01), whereas cycle length was slightly decreased (tendency). In temporal patterns, rela…
The
2019
In actinomycetes, antibiotic production is often associated with a morpho-physiological differentiation program that is regulated by complex molecular and metabolic networks. Many aspects of these regulatory circuits have been already elucidated and many others still deserve further investigations. In this regard, the possible role of many small open reading frames (smORFs) in actinomycete morpho-physiological differentiation is still elusive. In Streptomyces coelicolor, inactivation of the smORF trpM (SCO2038) – whose product modulates L-tryptophan biosynthesis – impairs production of antibiotics and morphological differentiation. Indeed, it was demonstrated that TrpM is able to interact w…
Biodegradation of pesticides by soil microflora
2006
Impact des modes de production économes en pesticides de synthèse sur la qualité microbiologique des sols viticoles
2022
La viticulture est un secteur d‘activité agricole stratégique pour la France carelle représente le 1er poste exportateur du secteur agroalimentaire pourseulement 3% de la SAU Française. Toutefois, elle est aussi une forteconsommatrice de produits phytosanitaires avec 20% des pesticides utilisés enFrance à elle seule, couplé aussi a une forte mécanisation. Tout ceci entraîne unedégradation de la qualité des sols, qu’elle soit physique (Quiquerez et al., 2008),ou biologique (Dequiedt et al., 2011). Une baisse importante de la biodiversitédu sol altère ses grandes fonctions d’intérêts telles que la décomposition de lamatière organique et la fourniture d’éléments minéraux, l’effet barrière auxp…
Metoda zmian konkurencyjności Estebana - Marquillasa a specjalizacja regionu na przykładzie produkcji zwierzęcej w Polsce
2016
Analiza składników zmiany (ang. shift-share analysis) jest popularną techniką analizy gospodarek regionalnych. Mankamentem klasycznej analizy zmian strukturalnych jest to, że nie uwzględnia ona relacji pomiędzy konkurencyjnością a efektem zmian strukturalnych. Esteban - Marquillas w 1972 roku zaproponował zmianę klasycznego równania shift- share, wprowadzając kategorię homotetyczną badanego zjawiska, co pozwoliło na uwzględnienie efektu konkurencyjności oraz powiązań między poszczególnymi składowymi. Ta zmiana pozwoliła na oczyszczenie efektu zmian pozycji konkurencyjności z wpływu wszelkich lokalnych zmian strukturalnych. Celem artykułu jest przedstawienie analizy składników zmiany i możli…
Genetic manipulation of spiramycin-producing strain Streptomyces ambofaciens ATCC 23877 by φC31 Att/Int system-based vectors results in a significant…
The genus Streptomyces produces about two-thirds of naturally occurring antibiotics and many other biologically active secondary metabolites. The genetic manipulation of Streptomycetes is often labor and time intensive due to their large genome and complex development. Much progress has been made to develop gene transfer methods useful to construct antibiotic-producing strains with improved properties. The φC31 Att/Int system is an integration system that has been widely used to produce stable recombinants in Actinomycetes and its integration site is an attB site located in a pirin-like gene (pirA) of the bacterial chromosome. In this study we demonstrate that the integration of φC31 DNA in…