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Targeting cluster galaxies for the 4MOST CHANCES Low-
No full textContext. The evolution of galaxies is shaped by both internal processes and their external environments. Galaxy clusters and their surroundings provide ideal laboratories to study these effects, particularly with respect to mechanisms such as quenching and morphological transformation. The Chilean Cluster galaxy Evolution Survey (CHANCES) Low-z sub-survey is part of the CHileAN Cluster galaxy Evolution Survey, a 4MOST community survey designed to uncover the relationship between the formation and evolution of galaxies and hierarchical structure formation as it happens, through deep and wide multi-object spectroscopy.
Aims. We present the target selection strategy followed to select galaxy cluster candidate members for the CHANCES Low-z sub-survey. The selection was focussed in and around 50 clusters and two superclusters at z < 0.07, out to (5 × R200) and down to mr = 20.4.
Methods. Combining public photometric redshift estimates from the DESI Legacy Imaging Survey and T80S/S-PLUS iDR5 with custom photometric redshifts, we were able to identify likely galaxy cluster candidate members, whose photometric redshifts were consistent with being located at the known redshift of the cluster. We measured the average deviations of their photometric redshifts with respect to the spectroscopic redshift measurements, σNMAD. We tested various selection parameters to maximise completeness, while maintaining purity.
Results. We successfully compiled our CHANCES-low-redshift catalogues, split into three different sub-surveys: Low-z bright (mr < 18.5), Low-z faint (18.5 ≤ mr < 20.4), and Low-z faint supplementary. To do so, we selected ≳500 000 galaxy cluster candidate members and included confirmed spectroscopic galaxy cluster members, from which we expect to obtain 4MOST low-resolution (R ∼ 6500) spectra for ∼320 000 galaxies.
Conclusions. The CHANCES Low-z target catalogues form a statistically robust sample for spectroscopic follow-up, enabling studies of galaxy evolution and environmental effects in nearby cluster and supercluster environments
Retraction Notice: Regime of salt in alluvial soils irrigated in Bukhara region, Uzbekistan
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: A Review on Data Discrepancy Factor Performance for Industrial Applications using Clustering Algorithms
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: A critique on Materials for Orthodontic Aligners through sustainable Manufacturing
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Retraction Notice: Forming the idea of ecological culture and national development in students
No full textWe take a zero tolerance to any situation where fraudulent research is published in our journals. As a result, this article has been retracted by the Publisher because it is suspected to be a nonsensical computer-generated publication with a number of tortured phrases and irrelevant references.
Additional measures have been implemented to prevent these issues from reoccurring.
EDP Sciences is extremely grateful to anonymous whistleblowers and the Problematic Paper Screene
Effet de la photobiomodulation sur la stabilité des minivis orthodontiques : revue systématique de la littérature 2019-2024
No full textObjectif : évaluer l'effet de la photobiomodulation (PBM) sur la stabilité des minivis orthodontiques par une revue systématique de la littérature récente. Matériel et méthodes : une recherche systématique a été effectuée dans PubMed, Google Scholar et Cochrane Library pour les publications entre janvier 2019 et mars 2024. Les critères d’inclusion comprenaient les revues systématiques, méta-analyses et essais cliniques contrôlés évaluant l’effet de la PBM sur la stabilité des minivis orthodontiques avec mesures objectives (ISQ, torque, taux de survie). La qualité méthodologique a été évaluée avec les outils Cochrane RoB 2.0 (risk of biais)et AMSTAR-2 (Assessing the Methodoligal Quality of Systematic). Résultats : sur 100 articles identifiés après déduplication, 12 ont été inclus dans la synthèse qualitative : deux revues systématiques, cinq méta-analyses et cinq essais cliniques (159 minivis au total). L’évaluation de qualité a révélé un risque de biais faible pour 40% des essais cliniques et une confiance modérée pour 60 % des méta-analyses. Huit études (67 %) rapportent un effet positif de la PBM sur la stabilité secondaire (30-60 jours post-insertion), trois études (25 %) des résultats non-concluants, et une étude (8 %) aucun effet. L’hétérogénéité des protocoles laser était substantielle : longueurs d’onde 635-980 nm, durées d’exposition 10-120 s, et fréquences d’application 1-14 séances. Conclusion : les données actuelles suggèrent un effet potentiellement bénéfique de la PBM sur la stabilité secondaire des minivis orthodontiques, mais l’hétérogénéité substantielle des protocoles et la présence d’études contradictoires empêchent l’établissement de recommandations cliniques définitives. Des essais contrôlés randomisés multi-centriques avec protocoles PBM standardisés sont nécessaires avant application clinique routinière
Early life stages of Aquitanian pike
No full textAquitanian pike, Esox aquitanicus, is a new esocid species described in 2014 and endemic to Southwestern France. The four main goals of the present study were to (i) obtain the first morphological data on the early life stages, (ii) test the effects of temperature on their survival and development, (iii) compare the results with the Northern pike, and (iv) produce a few individuals to exhibit them at the Aquarium of Limoges. Eggs are yellowish, demersal, and sticky. The mean diameter was 2.73 ± 0.08 mm (n = 174). The larval size at hatching was 9.09 ± 0.24 mm (n = 14). The morphological development of 15 larvae was followed during 11 weeks as well as the snout growth in relation to eye size. It appeared that already after three weeks, slight differences between the two species were apparent, and after nine weeks, this snout/eye ratio was twice greater for Northern pike than Aquitanian pike. At the end of the yolk-feeding period, which lasted from 12 days at 18 °C to 36 days at 6 °C, the overall survival rate was over 85% and larvae were of similar size, except at 6 °C. After three months, the best results in term of survival were obtained at 12 °C (60%) and for growth at 15 °C (34.11 mm), followed at 12 °C (27.85 mm). Based on these results, we were able to rear Aquitanian pike for more than 2 years in the Aquarium of Limoges in order to promote the conservation of the species to the public
NGS data from historical museum collections help to clarify the conservation status of endangered or supposedly extinct species: the case of the Mascarene endemic freshwater shrimp
No full textMacrobrachium hirtimanus (Olivier, 181
A self-consistent 3D magnetohydrodynamic model producing a solar blowout jet
No full textContext. Solar blowout jets are a distinct subclass of ubiquitous extreme-ultraviolet (EUV) and X-ray coronal jets.
Aims. Most existing models of blowout jets prescribe initial magnetic-field configurations and apply ad hoc changes in the photosphere to trigger the jets. In contrast, we aim for a self-consistent magneto-convective description of the jet initiation.
Methods. We employed a 3D radiation magnetohydrodynamic (MHD) model of a solar coronal hole region using the MURaM code. The computational domain extends from the upper convection zone to the lower corona. We synthesized the emission in the EUV and X-ray for direct comparison with observations and examined the evolution of the magnetic-field structure of the event.
Results. In the simulation a twisted flux tube forms self-consistently, emerges through the surface, and interacts with the preexisting open field. Initially, the resulting jet is of the standard type with a narrow spire. The release of the twist into the open field causes a broadening of the jet spire, turning the jet into a blowout type. At the same time, this creates a fast heating front, propagating at the local Alfvén speed. The properties of the modeled jet closely match those of the observed blowout jets: a slow (∼180 km s−1) mass upflow and a fast (∼500 km s−1) propagating front form, the latter being a signature of the heating front. Also, the timing of the jet with respect to flux emergence and subsequent cancellation matches observations.
Conclusions. Near-surface magneto-convection self-consistently generates a twisted flux tube that emerges through the photosphere. The tube then interacts with the preexisting magnetic field by means of interchange reconnection. This transfers the twist to the open field and produces a blowout jet that matches the main characteristics of that found in observations
The hydrogen-free circumstellar interaction in the Type Ib supernova 2021efd: A clue to the mechanism of the helium-layer stripping
No full textContext. Stripped-envelope supernovae (SESNe), including Type IIb, Ib, and Ic supernovae (SNe), originate from the explosions of massive stars whose outer envelopes have been largely removed during their lifetimes. The main stripping mechanism for the hydrogen (H) envelope in the progenitors of SESNe is often considered to be interaction with a binary companion, but the stripping mechanism for the helium (He) layer is unclear.
Aims. We study the process of the He-layer stripping in the progenitors of SESNe. This is closely related to the origin of their diverse observational properties.
Methods. We conducted photometric and spectroscopic observations of the Type Ib SN 2021efd, which shows signs of interaction with H-free circumstellar material (CSM). At early phases, its photometric and spectroscopic properties resemble those of typical Type Ib SNe. Around 30 days after the r-band light curve (LC) peak until at least ∼770 days, the luminosity of the multiband LCs is higher than that of regular SESNe and has at least three distinct peaks. The LC evolution is similar to that of SN 2019tsf, whose previously unpublished spectrum at 400 days is also presented here. The nebular spectrum of SN 2021efd shows narrow emission lines (∼1000 km s−1) in various species, such as O