Academic literature on the topic 'Rythme journalier'
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Journal articles on the topic "Rythme journalier":
Marty, C., and E. Beall. "Modalités spatio-temporelles de la dispersion d'alevins de saumon atlantique (Salmo salar L.) à l'émergence." Revue des sciences de l'eau 2, no. 4 (April 12, 2005): 831–46. http://dx.doi.org/10.7202/705057ar.
Vilchez-Quero, A., and P. Lavandier. "Composition et rythme journalier de la dérive des exuvies nymphales de Chironomidés dans le Guadalquivir (Sierra de Cazorla - Espagne)." Annales de Limnologie 22, no. 3 (1986): 253–60. http://dx.doi.org/10.1051/limn/1986023.
Lebourgeois, François. "Activités saisonnières et comportements du blaireau européen (Meles meles L.) en contexte forestier tempéré de feuillus de plaine : résultats de 11 ans de suivi journalier (2013-2023)." Revue forestière française 74, no. 4 (December 11, 2023): 449–71. http://dx.doi.org/10.20870/revforfr.2023.7890.
NOWAK, R., M. PAQUIGNON, and J. P. SIGNORET. "Possibilités et limites de l’utilisation du verrat en accouplement naturel." INRAE Productions Animales 1, no. 3 (July 11, 1988): 215–18. http://dx.doi.org/10.20870/productions-animales.1988.1.3.4455.
Klarsfeld, André, Serge Birman, and François Rouyer. "L’horloge circadienne à l’heure Nobel." médecine/sciences 34, no. 5 (May 2018): 480–84. http://dx.doi.org/10.1051/medsci/20183405023.
Gaboriau, Patrick. "Les rythmes journaliers et saisonniers des clochards." Les Annales de la recherche urbaine 61, no. 1 (1993): 121–24. http://dx.doi.org/10.3406/aru.1993.1769.
Ponce, Corinne, Martine Alcorta, Joanna Lucenet, Stéphanie Constant, and Véronique Rouyer. "Fluctuation journalière de l’attention en classe et rythme de vie de l’enfant de 7–8 ans." Médecine du Sommeil 18, no. 4 (December 2021): 186. http://dx.doi.org/10.1016/j.msom.2021.10.002.
DULPHY, J. P., Y. ELMEDDAH, R. BAUMONT, Marie JAILLER, L. L'HOTELIER, and H. BOUSQUET. "Influence du rythme de distribution sur les activités alimentaires et l'évolution journalière du contenu ruminal chez le mouton." Reproduction Nutrition Développement 28, no. 4A (1988): 919–29. http://dx.doi.org/10.1051/rnd:19880605.
Ortega, Alfredo, A. Gonzalez-Romero, and R. Barbault. "Rythmes journaliers d’activité et partage des ressources dans une communauté de lézards du désert de Sonora, Mexique." Revue d'Écologie (La Terre et La Vie) 41, no. 4 (1986): 355–60. http://dx.doi.org/10.3406/revec.1986.5390.
Dionne, Jean-Claude. "Érosion récente du schorre supérieur à Sainte-Anne-de-Beaupré, Québec." Géographie physique et Quaternaire 54, no. 1 (October 2, 2002): 69–89. http://dx.doi.org/10.7202/004792ar.
Dissertations / Theses on the topic "Rythme journalier":
Botté, Audrey. "Impact de la pollution lumineuse nocturne sur l’huitre creuse Crassostrea gigas : étude de la perturbation des rythmes biologiques et des conséquences physiologiques." Electronic Thesis or Diss., Bordeaux, 2023. http://www.theses.fr/2023BORD0494.
Artificial Light At Night (ALAN) masks natural light cycles used by organisms to synchronize their biological rhythm with the environment. By disrupting these rhythms, ALAN can have harmful physiological consequences. Coastal environments are largely affected by ALAN due to the high and growing human population density. However, despite this growing threat, ALAN effects on these ecosystems are poorly studied. The oyster Crassostrea gigas is a key species of these ecosystems likely exposed to ALAN. This work evaluates ALAN effects at low and realistic intensities on the oyster’s behavioral daily rhythm and on its internal clock according to its intensity, spectral composition and exposure modality. Furthermore, the impact of ALAN is also studied on the oyster’s shell growth and gill’s microbiota. Results show that ALAN affects the oyster behavioral daily rhythm and its molecular clock, suggesting a disruption of its functioning, strating from 0.1 lx with the strongest effects in blue light and the least strong in green light. In addition, this study suggests that cutting off direct lighting in the middle of the night but in the presence of skyglow could increase harmful effects. Finally, ALAN reduces shell growth and leads to dysbiosis of the gill’s microbiota. These adverse effects are directly correlated with the daily rhythm robustness
Traore, Amadou Sékou. "Étude des déterminants génétiques, physiologiques et environnementaux des rythmes journaliers d’activité chez les anophèles vecteurs du Plasmodium." Thesis, Paris, AgroParisTech, 2020. http://www.theses.fr/2020AGPT0005.
The appearance of new patterns in Anopheles biting behavior following the universal coverage of LLINs is worrying for malaria control. Indeed, the meticulous selection of vector populations that are able to escape the physical-chemical barrier of LLINs and bite when people are not protected is still ongoing. It is known that many Anopheles life rhythms are governed by an endogenous clock known as circadian which allows their temporal organization. In addition, several biotic (physiological resistance, nutritional status, parasitism, competition) or abiotic (light-dark cycle, temperature) environmental stimuli can modulate the insects’ behavioral rhythms. As part of a better understanding of the shifted aggressive behavior observed in the field among malaria vector, and the determinants that may be involved, we have undertaken experimental studies on the daily rhythm flight activity of population of vectors that are involved in the transmission of malaria in Burkina Faso
Nexon, Laurent. "Régulation photopériodique du fonctionnement journalier des neurones sérotoninergiques du raphé dorsal et médian chez le hamster doré." Strasbourg, 2009. https://publication-theses.unistra.fr/public/theses_doctorat/2009/NEXON_Laurent_2009.pdf.
In mammals, serotonin (5-HT) is implicated in the regulation of circadian clock-controlled physiological and behavioral parameters which vary with seasons. We sought to determine whether daylength (photoperiod) could influence the functioning of 5-HT neurons in the raphé of a seasonal species, the Syrian hamster. A 24h-hour study of two groups of hamsters, in long and short photoperiod, has shown that photoperiod modifies the daily regulation of 5-HT synthesis. In a second part, we have shown that the photoperiodic message is delivered to 5-HT cells from the clock by hormonal route, via glucocorticoids (corticosterone and cortisol) and testosterone. These results show for the first time that the photoperiodic message can be delivered by the ubiquitous hormones glucocorticoids
Seguy, Maud Eva Audrey. "Facteurs d'environnement, physiques et sociaux, et maintien de l'homéostasie chez un primate tropical." Paris 6, 2005. http://www.theses.fr/2005PA066014.
Kouassi, Ernest. "Rythmes journaliers d'activité et sélectivité alimentaire au sein des communautés pélagiques : (Zooplancton et Mysidaces) dans une lagune tropicale (Lagune Ebrie, Côte d'Ivoire)." Aix-Marseille 2, 2001. http://www.theses.fr/2001AIX22021.
Tameemi, Asmaa. "Approche transculturelle et différentielle des rythmes scolaires : étude de l'évolution journalière et hebdomadaire de l'attention chez des élèves irakiens et émiratis." Thesis, Tours, 2011. http://www.theses.fr/2011TOUR2025/document.
The proposed study appears with in the framework of the research concerned with the fluctuations of the attention performance in the field of education, specifically in the primary schools. It aims at showing, in a developmental and differential perspective, the impact of the moment of daily performance, and weekly variations of sleep duration, according to age, sex and geographic background of the children. In order to be able to conduct the identification of the performances, we are able to measure changes in attention in two countries namely: Iraq and the United Arab Emirates. In order to proceed with the identification of performances, 223 students in two Arab countries, including 103 boys and 120 girls, are divided into two age groups (CP (5-7 years), CM2 (10-12 years). These children are, in the same way to tests of attention (dam of numbers), given to tests of simulated conduct, at different moments of the day: four times a day, on different days of the week: Sunday, Monday, Tuesday, Wednesday and Thursday. To study the duration of sleep in our subjects we used a sleep diary. It was measured by the nights of the week of the experiment (Saturday / Sunday, Sunday / Monday / Tuesday, Tuesday / Wednesday, Wednesday / Friday and Friday / Saturday). The results indicate that attention performance fluctuates differently in various times of day and the day of the week as well as among students in CP than CM2. In addition, nighttime sleep durations fluctuate during the week differently depending on the weekly schedule. These results complete the reflections on the good moments for reflection, and can highlight the prominence of age, gender, geographic background of students, these data differ according to the geographic background of students (middle Eastern countries: Iraq, United Arab Emirates, on the one hand, France, on the other) or in the schedules proposed
Dagenais, Bellefeuille Steve DB. "Nitrate metabolism in the dinoflagellate Lingulodinium polyedrum." Thèse, 2015. http://hdl.handle.net/1866/15897.
Dinoflagellates are unicellular eukaryotes found in most aquatic ecosystems of the world. They are major contributors to carbon fixation in the oceans, either as free-living phytoplankton or as symbionts to corals. Dinoflagellates are also infamous because some species can form spectacular blooms called red tides, which can cause serious damage to ecosystems, human health, fisheries and tourism. One of the factors often correlated with algal blooms are increases in nutrients, particularly nitrogen and phosphorus. Nitrate is one of the main components of agricultural runoffs, but also the most abundant bioavailable form of nitrogen in marine environments. Thus, agricultural activities have globally contributed to the magnification of the problems associated with red tides. However, bloom formation and persistence cannot be ascribed to human pollution alone, because other biotic and abiotic factors are at play. Particularly, it is difficult to assess the relative importance of nitrate addition over these other factors, because nitrate metabolism in dinoflagellate is mostly unknown. Filling part of this gap was the main goal of this thesis. I selected Lingulodinium polyedrum as a model for studying nitrate metabolism, because this dinoflagellate can easily be cultured in the lab and a recent transcriptomic survey has provided an almost complete gene catalogue for this species. It is also interesting that some molecular components of the nitrate pathway in this organism have been reported to be under circadian control. Thus, in this project, I used physiological, biochemical, transcriptomic and bioinformatic approaches to enrich our understanding of dinoflagellate nitrate metabolism and to increase our appreciation of the role of the circadian clock in regulating this important primary metabolic pathway. I first studied the particular case of dinoflagellate blooms that occur and persist in conditions of nitrogen depletion. This idea may seems counterintuitive, because nitrogen addition rather than depletion, is generally associated with algal blooms. However, I discovered that when nitrate was added to nitrogen-deficient or nitrogen-sufficient cultures, those that had been acclimated to nitrogen stress were able to survive for about two months at high cell densities, while non-acclimated cells died after two weeks. In conditions of severe nitrogen limitation, cells could survive a little bit more than two weeks by arresting cell division and reducing photosynthetic rates. The incapacity to synthesize new amino acids for these deprived cells in a context of on-going photosynthesis led to the accumulation of reduced carbon in the form of starch granules and lipid bodies. Interestingly, both of these carbon storage compounds were polarized in Lingulodinium cells, suggesting a functional role. The second contribution of my thesis was to identify and characterize the first nitrate transporters in dinoflagellates. I found that in contrast to plants, Lingulodinium had a reduced suite of nitrate transporters and only members of the high-affinity nitrate transporter 2 (NRT2) family were predicted to be functionally relevant in the transport of nitrate. The main transporter was constitutively expressed, which suggested that nitrate uptake in Lingulodinium was mostly a constitutive process rather than an inducible one. I also discovered that nitrate uptake in this organism was light-dependent and not a circadian-regulated process, as previously suggested. Finally, I used RNA-seq to verify if any transcripts involved in the nitrate metabolism of Lingulodinium were under circadian control. Not only did I discovered that there were no daily variations in the level of transcripts involved in nitrate metabolism, but also that there were no changes for any transcripts present in the whole transcriptome of Lingulodinium. This discovery showed that the circadian timer in this species did not require rhythmic transcription to generate biological rhythms, as observed in other eukaryotes.
Book chapters on the topic "Rythme journalier":
Testu, François. "Rythmicité journalière de l'activité intellectuelle de l'élève et influence des facteurs de personnalité et de situation." In Rythmes de vie et rythmes scolaires, 49–83. Elsevier, 2008. http://dx.doi.org/10.1016/b978-2-294-07381-6.50006-2.