Fondation de l'Avenir

Abstract We describe 2 new genera and 6 new species of unusual armored scale insects (Hemiptera: Coccomorpha: Diaspididae) from Chile: Austraspis Normark, Normark and Amouroux, gen. n.; Aysenaspis Normark, Normark and Amouroux, gen. n.; Austraspis foye Normark, Normark and Amouroux, sp. n.; Austraspis llanquihue Normark, Normark and Amouroux, sp. n.; Austraspis pehuen Normark, Normark and Amouroux, sp. n.; Austraspis relicta Normark, Normark and Amouroux, sp. n.; Aysenaspis michay Normark, Normark and Amouroux, sp. n.; and Anotaspis paradisi Normark, Normark and Amouroux, sp. n. Austraspis is remarkable for having abdominal segments V and VI free (not fused), with only segments VII and VIII fused to form the pygidium, and in having a proliferation of multilobulate lobes (each with 3 to 6 lobules) on the abdomen. Aysenaspis is remarkable for having all 8 abdominal segments free and in having ducts that are 8-shaped at the internal end. Phylogenetic analysis of part of 28S rRNA places the 2 new genera (Austraspis and Aysenaspis) outside of currently recognized subfamilies of Diaspididae and corroborates the placement of Anotaspis in Ancepaspidinae. We place the new genera in the heretofore monotypic taxon Xanthophthalminae Ferris, revived subfamily. We provide a revised key to the subfamilies of Diaspididae and global keys to all the species of Xanthophthalminae and Ancepaspidinae. The host plants of Austraspis are Araucaria araucana (Araucariaceae) and Drimys winteri (Winteraceae), which both have undergone little morphological change since the Mesozoic. Austraspis may also retain a relatively ancient morphology; its pygidial appendages are relatively undifferentiated compared to those of other diaspidids.

The modern aesthetic ideal emphasizes a defined waistline, sculpted curves, and a voluminous, lifted buttock, making the gluteal region a key focus in cosmetic medicine. Among the available options, hyaluronic acid (HA) fillers have emerged as a safe, minimally invasive, and reversible alternative to surgical methods such as gluteal implants or fat grafting, which are associated with higher complication rates and longer recovery times. This prospective study evaluates the efficacy, safety, and patient satisfaction of gluteal augmentation using a standardized protocol of HA filler injections. A total of 40 female patients, aged between 28 and 45 years and with a body mass index (BMI) between 18 and 25 kg/m2, were treated using blunt-tip cannulas and medium molecular weight HA injected into the deep subcutaneous layer. Injection planning was based on individualized anthropometric analysis and precise anatomical landmarking. The procedure was performed in a certified clinical setting under sterile conditions and with appropriate anesthetic support. The results demonstrated immediate and natural-looking volume enhancement, with excellent tissue integration and aesthetic improvement lasting up to 12 months. Patient satisfaction was notably high, with 95% of participants reporting being satisfied or very satisfied with the outcome in terms of shape, symmetry, and projection. Follow-up assessments at 7 to 14 days and again at 3 to 6 months confirmed stable results and sustained satisfaction. Adverse effects were limited to mild and transient events such as bruising, pain, and swelling, without any cases of serious complications, allergic reactions, or the need for enzymatic reversal. The HA formulation used in this study is Privilege Body, injections 10 ml format, which represents a new generation of body fillers, specifically designed to combine the volumizing properties of high molecular weight HA with the cohesiveness and reversibility of lower molecular weight formulations. Unlike permanent fillers, such as silicone or acrylic materials, now banned due to the risk of granulomas, migration, and infections, this medium molecular weight HA is fully biodegradable and can be safely dissolved with hyaluronidase in case of need. These characteristics make it particularly suitable for large-volume, high-precision applications like gluteal remodeling. In conclusion, hyaluronic acid-based gluteal augmentation is a viable, effective, and safe option for selected patients seeking moderate body enhancement without the risks or downtime associated with surgery. The key to success lies in careful patient selection, a solid understanding of gluteal anatomy, and adherence to a standardized technique. While the cost of HA may be higher than fat grafting, its predictability, minimal invasiveness, and favorable safety profile make it a valuable tool in the expanding field of non-surgical body contouring. Future comparative and long-term studies will be essential to further validate and refine this approach.

International audience

BackgroundTranscranial ultrasound stimulation (TUS) is a non-invasive brain stimulation technique; when skull aberrations are compensated for, this technique allows, with millimetric accuracy, circumvention of the invasive surgical procedure associated with deep brain stimulation (DBS) and the limited spatial specificity of transcranial magnetic stimulation. Objective/hypothesis: We hypothesize that MR-guided low-power TUS can induce a sustained decrease of tremor power in patients suffering from medically refractive essential tremor. MethodsThe dominant hand only was targeted, and two anatomical sites were sonicated in this exploratory study: the ventral intermediate nucleus of the thalamus (VIM) and the dentato-rubro-thalamic tract (DRT). Patients (N = 9) were equipped with MR-compatible accelerometers attached to their hands to monitor their tremor in real-time during TUS. ResultsVIM neurostimulations followed by a low-duty cycle (5 %) DRT stimulation induced a substantial decrease in the tremor power in four patients, with a minimum of 89.9 % reduction when compared with the baseline power a few minutes after the DRT stimulation. The only patient stimulated in the VIM only and with a low duty cycle (5 %) also experienced a sustained reduction of the tremor (up to 93.4 %). Four patients (N = 4) did not respond. The temperature at target was 37.2 ± 1.4 °C compared to 36.8 ± 1.4 °C for a 3 cm away control point. ConclusionsMR-guided low power TUS can induce a substantial and sustained decrease of tremor power. Follow-up studies need to be conducted to reproduce the effect and better to understand the variability of the response amongst patients. MR thermometry during neurostimulations showed no significant thermal rise, supporting a mechanical effect.

Nous arrivons en fin de journée. Il y a eu des conférences extrêmement denses, tant sur les expériences d'universitarisation que d'écoles en travail social et en relation avec les universités. Des chercheurs ont également pris la parole sur leurs expériences de recherche et de formation avec des acteurs des écoles. Nous commençons la première prise de parole de la table ronde qui termine la journée, avec des acteurs un peu plus institutionnels pourrait-on dire, sur la question de l'avenir des écoles du travail social dans un processus d'universitarisation et des rapports avec les universités. Merci. Vous avez choisi un sujet qui arrive à point nommé pour nous, le Haut Conseil du Travail Social. Vous le savez, dans la centrifugeuse de la dernière ligne droite de la rédaction du Livre blanc du travail social, et je remercie ceux qui ont participé notamment aux entretiens du livre blanc, beaucoup de travailleurs sociaux y étaient Les perspectives d'avenir des Établissements de Formation en Travail Social :...

Purpose Wireless communication has become an integral part of our lives. The growing number of antennas in our environment and the expanding use of mobile phones (MPs) are increasing the population’s exposure to electromagnetic fields. The present study aimed to examine the potential impact of MPs radiofrequency electromagnetic fields (RF-EMF) exposure on the brainwaves of the resting electroencephalogram (EEG) in humans. Materials and Methods Twenty-one healthy volunteers were exposed to Global System for Mobile communications (GSM) signal at 900 MHz MP RF-EMF. The maximum specific absorption rate (SAR) of the MP averaged on 10 g tissue and 1 g tissue were measured at 0.49 W/kg, 0.70 W/kg, respectively. Results Results showed that while delta and beta rhythms of resting EEG were not affected, theta brainwaves were significantly modulated during exposure to RF-EMF related to MPs. For the first time, it was shown that this modulation is dependent on the eye condition, i.e. closed or open. Conclusions This study strongly suggests that acute exposure to RF-EMF alters the EEG theta rhythm at rest. Long-term exposure studies are required to explore the effect of this disruption in high-risk or sensitive populations.