Amplified sinus-P-wave analysis predicts outcomes of cryoballoon ablation in patients with persistent and long-standing persistent atrial fibrillation: A multicentre study

IntroductionOutcomes of catheter ablation for non-paroxysmal atrial fibrillation (AF) remain suboptimal. Non-invasive stratification of patients based on the presence of atrial cardiomyopathy (ACM) could allow to identify the best responders to pulmonary vein isolation (PVI).MethodsObservational multicentre retrospective study in patients undergoing cryoballoon-PVI for non-paroxysmal AF. The duration of amplified P-wave (APW) was measured from a digitally recorded 12-lead electrocardiogram during the procedure. If patients were in AF, direct-current cardioversion was performed to allow APW measurement in sinus rhythm. An APW cut-off of 150 ms was used to identify patients with significant ACM. We assessed freedom from arrhythmia recurrence at long-term follow-up in patients with APW ≥ 150 ms vs. APW < 150 ms.ResultsWe included 295 patients (mean age 62.3 ± 10.6), of whom 193 (65.4%) suffered from persistent AF and the remaining 102 (34.6%) from long-standing persistent AF. One-hundred-forty-two patients (50.2%) experienced arrhythmia recurrence during a mean follow-up of 793 ± 604 days. Patients with APW ≥ 150 ms had a significantly higher recurrence rate post ablation compared to those with APW < 150 ms (57.0% vs. 41.6%; log-rank p < 0.001). On a multivariable Cox-regression analysis, APW≥150 ms was the only independent predictor of arrhythmia recurrence post ablation (HR 2.03 CI95% 1.28–3.21; p = 0.002).ConclusionAPW duration predicts arrhythmia recurrence post cryoballoon-PVI in persistent and long-standing persistent AF. An APW cut-off of 150 ms allows to identify patients with significant ACM who have worse outcomes post PVI. Analysis of APW represents an easy, non-invasive and highly reproducible diagnostic tool which allows to identify patients who are the most likely to benefit from PVI-only approach

Globally invariant metabolism but density-diversity mismatch in springtails.

Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil arthropods regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains unknown. Here, using a global dataset representing 2470 sites, we estimate the total soil springtail biomass at 27.5 megatons carbon, which is threefold higher than wild terrestrial vertebrates, and record peak densities up to 2 million individuals per square meter in the tundra. Despite a 20-fold biomass difference between the tundra and the tropics, springtail energy use (community metabolism) remains similar across the latitudinal gradient, owing to the changes in temperature with latitude. Neither springtail density nor community metabolism is predicted by local species richness, which is high in the tropics, but comparably high in some temperate forests and even tundra. Changes in springtail activity may emerge from latitudinal gradients in temperature, predation and resource limitation in soil communities. Contrasting relationships of biomass, diversity and activity of springtail communities with temperature suggest that climate warming will alter fundamental soil biodiversity metrics in different directions, potentially restructuring terrestrial food webs and affecting soil functioning

Global fine-resolution data on springtail abundance and community structure

Springtails (Collembola) inhabit soils from the Arctic to the Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database on springtail communities that includes 249,912 occurrences from 44,999 samples and 2,990 sites. These data are mainly raw sample-level records at the species level collected predominantly from private archives of the authors that were quality-controlled and taxonomically-standardised. Despite covering all continents, most of the sample-level data come from the European continent (82.5% of all samples) and represent four habitats: woodlands (57.4%), grasslands (14.0%), agrosystems (13.7%) and scrublands (9.0%). We included sampling by soil layers, and across seasons and years, representing temporal and spatial within-site variation in springtail communities. We also provided data use and sharing guidelines and R code to facilitate the use of the database by other researchers. This data paper describes a static version of the database at the publication date, but the database will be further expanded to include underrepresented regions and linked with trait data.</p

Global fine-resolution data on springtail abundance and community structure

CODE AVAILABILITY : Programming R code is openly available together with the database from Figshare.SUPPLEMENTARY MATERIAL 1 : Template for data collectionSUPPLEMENTARY MATERIAL 2 : Data Descriptor WorksheetSpringtails (Collembola) inhabit soils from the Arctic to the Antarctic and comprise an estimated ~32% of all terrestrial arthropods on Earth. Here, we present a global, spatially-explicit database on springtail communities that includes 249,912 occurrences from 44,999 samples and 2,990 sites. These data are mainly raw sample-level records at the species level collected predominantly from private archives of the authors that were quality-controlled and taxonomically-standardised. Despite covering all continents, most of the sample-level data come from the European continent (82.5% of all samples) and represent four habitats: woodlands (57.4%), grasslands (14.0%), agrosystems (13.7%) and scrublands (9.0%). We included sampling by soil layers, and across seasons and years, representing temporal and spatial within-site variation in springtail communities. We also provided data use and sharing guidelines and R code to facilitate the use of the database by other researchers. This data paper describes a static version of the database at the publication date, but the database will be further expanded to include underrepresented regions and linked with trait data.Open Access funding enabled and organized by Projekt DEAL.http://www.nature.com/sdatahj2024Plant Production and Soil ScienceSDG-15:Life on lan

Lyautey et l'idée de protectorat de 1894 à 1902 : Genèse d'une doctrine coloniale

Lyautey's doctrine of protectorate was formed during his early colonial career from 1894 to 1902. He became a partisan of the « politique d'association » based on indirecte rule, and which meant involving the native population in the administration of the colonies. In Indochina, from 1894 to 1897, he was influenced by the policy of the General Governor Lanessan, and became acquainted with authors such as Chailley-Bert and Harmand who were the propagandists of the « politique d'association ». In Madagascar, from 1 897 to 1899, Lyautey tried to apply locally such a policy of indirect rule. In the territory he was commanding, he began organizing small protectorates with the Sakalava kingdoms of the western coast. Such a policy of « protectorats interieurs » was to be developed by Lyautey from 1900 to 1902 in the South of the Island.La doctrine du protectorat de Lyautey se forma pendant les débuts de sa carrière coloniale de 1894 à 1902. Il devint un partisan de la politique d'association basée sur l'administration indirecte, qui consistait à impliquer les populations indigènes dans l'administration des colonies. En Indochine, de 1894 à 1897, il fut influencé par la politique du gouverneur général de Lanessan, et devint familier d'auteurs comme Chailley-Bert et Harmand, les théoriciens de la « politique d'association». A Madagascar, de 1897 à 1899, Lyautey essaya d'appliquer localement une telle politique d'administration indirecte. Dans le territoire qu'il commandait, il commença à organiser de petits protectorats dans les petits royaumes sakalava de la côte occidentale. Une telle politique des protectorats intérieurs fut développée par Lyautey dans le sud de me de 1900 à 1902.Venier Pascal. Lyautey et l'idée de protectorat de 1894 à 1902 : Genèse d'une doctrine coloniale. In: Revue française d'histoire d'outre-mer, tome 78, n°293, 4e trimestre 1991. pp. 499-517

Main Theoretical Currents in Geopolitical Thought in the Twentieth Century

It is difficult to identify theoretical approaches in the currents of traditional geopolitical thinking, as it is true that it's all about "worldviews" contextualized by history. Nevertheless, one can detect in the writings of all walks of constant territorial retroactively condition of international life. Since the 1960s, various work-oriented theoretical or methodological have been proposed, particularly in terms of geo-strategy because it existed in that area a "request". We want to believe that their synthesis will advance

Kofman Eleonore, Phizacklea Annie, Raghuram Parvati and Sales Rosemary, Gender and International Migration in Europe. Employment welfare and politics Anthias Floya and Lazaridis Gabriella, Gender and Migration in Southern Europe. Women on the Move

Blanc Maurice, Ferréol Gilles, Santelli Emmanuelle, Venier Philippe. Kofman Eleonore, Phizacklea Annie, Raghuram Parvati and Sales Rosemary, Gender and International Migration in Europe. Employment welfare and politics Anthias Floya and Lazaridis Gabriella, Gender and Migration in Southern Europe. Women on the Move. In: Revue européenne des migrations internationales, vol. 17, n°2,2001. Débats contemporains, sous la direction de Jacqueline Costa-Lascoux et Marie-Antoinette Hily. pp. 183-186

Khadria Binod, The Migration of Knowledge Workers. Second Generation Effects of India's Brain Drain

Blanc Maurice, Ferréol Gilles, Santelli Emmanuelle, Venier Philippe. Khadria Binod, The Migration of Knowledge Workers. Second Generation Effects of India's Brain Drain . In: Revue européenne des migrations internationales, vol. 17, n°2,2001. Débats contemporains, sous la direction de Jacqueline Costa-Lascoux et Marie-Antoinette Hily. pp. 191-194

Juteau Danielle, L'Ethnicité et ses frontières

Blanc Maurice, Ferréol Gilles, Santelli Emmanuelle, Venier Philippe. Juteau Danielle, L'Ethnicité et ses frontières. In: Revue européenne des migrations internationales, vol. 17, n°2,2001. Débats contemporains, sous la direction de Jacqueline Costa-Lascoux et Marie-Antoinette Hily. pp. 186-187