94 research outputs found
Sainte-Marie-aux-Mines â Berg Armo
Le quartier de la mine Berg Armo fait lâobjet de fouilles depuis 2013. LâopĂ©ration 2017 sâest focalisĂ©e sur la fouille du site de la forge 2 (par opposition Ă la forge du xive s. localisĂ©e en 2013) situĂ©e dans la partie nord-est de la plate-forme qui a dĂ©jĂ livrĂ© deux habitats. Plusieurs sondages effectuĂ©s dans ce secteur en 2015 et 2016 ont livrĂ© une forte concentration de scories de forge et de charbon de bois. Lors de la campagne 2017 lâapprĂ©hension de lâensemble de lâemprise de cette couc..
Sainte-Marie-aux-Mines â Fouchelle
FouillĂ©e depuis 2013, la citĂ© ouvriĂšre de la Fouchelle hĂ©bergeait des mineurs, des fondeurs et leurs familles. Elle sâĂ©tire le long dâun chemin horizontal, et dâun sentier en lĂ©gĂšre pente descendante qui sâen dĂ©tache. On estime Ă une cinquantaine le nombre de maisons qui la composent, organisĂ©es en groupes de deux Ă cinq unitĂ©s. Le groupe F2, proche du dĂ©but de ce village du cĂŽtĂ© du vallon de Saint-Philippe, se compose dâun sous-groupe A, fouillĂ© en 2017, et dâun sous-groupe B, fouillĂ© en 201..
Outcomes in newly diagnosed elderly glioblastoma patients after concomitant temozolomide administration and hypofractionated radiotherapy
This study aimed to analyze the treatment and outcomes of older glioblastoma patients. Forty-four patients older than 70 years of age were referred to the Paul Strauss Center for chemotherapy and radiotherapy. The median age was 75.5 years old (range: 70-84), and the patients included 18 females and 26 males. The median Karnofsky index (KI) was 70%. The Charlson indices varied from 4 to 6. All of the patients underwent surgery. O6-methylguanine-DNA methyltransferase (MGMT) methylation status was determined in 25 patients. All of the patients received radiation therapy. Thirty-eight patients adhered to a hypofractionated radiation therapy schedule and six patients to a normofractionated schedule. Neoadjuvant, concomitant and adjuvant chemotherapy regimens were administered to 12, 35 and 20 patients, respectively. At the time of this analysis, 41 patients had died. The median time to relapse was 6.7 months. Twenty-nine patients relapsed, and 10 patients received chemotherapy upon relapse. The median overall survival (OS) was 7.2 months and the one- and two-year OS rates were 32% and 12%, respectively. In a multivariate analysis, only the Karnofsky index was a prognostic factor. Hypofractionated radiotherapy and chemotherapy with temozolomide are feasible and acceptably tolerated in older patients. However, relevant prognostic factors are needed to optimize treatment proposals
Ultra-deep Spitzer Mid-Infrared Spectroscopy of LIRGs and ULIRGs at z ~ 1-2
We present ultra-deep mid-IR spectra of 48 infrared-luminous galaxies in the
GOODS-South field obtained with the InfraRed Spectrograph (IRS) on the Spitzer
Space Telescope. These galaxies are selected among faint infrared sources (0.14
- 0.5 mJy at 24 um) in two redshift bins (0.76-1.05 and 1.75-2.4) to sample the
major contributors to the cosmic infrared background at the most active epochs.
We estimate redshifts for 92% of the sample using PAH and Si absorption
features. Only few of these galaxies (5% at z~1 and 12% at z~2) have their
total infrared luminosity dominated by emission from AGN. The averaged mid-IR
spectra of the z~1 LIRGs and of the z~2 ULIRGs are very similar to the averaged
spectrum of local starbursts and HII-like ULIRGs, respectively. We find that
6.2um PAH equivalent widths reach a plateau of ~1 um for L(24 mu) < 1E11
L(sun). At higher luminosities, EW (6.2 mu) anti-correlates with L(24 um).
Intriguingly, high-z ULIRGs and SMG lie above the local EW (6.2 um) - L(24 um)
relationship suggesting that, at a given luminosity, high-z ULIRGs have AGN
contributions to their dust emission lower than those of local counterparts. A
quantitative analysis of their morphology shows that most of the luminous IR
galaxies have morphologies similar to those of IR-quiet galaxies at the same
redshift. All z~2 ULIRGs of our sample are IR-excess BzK galaxies and most of
them have L(FIR)/L(1600A) ratios higher than those of starburst galaxies at a
given UV slope. The ``IR excess'' (Daddi et al. 2007) is mostly due to strong
7.7 um PAH emission and under-estimation of UV dust extinction. On the basis of
the AGN-powered L (6 um) continuum measured directly from the mid-IR spectra,
we estimate an average intrinsic X-ray AGN luminosity of L(2-10 keV) = (0.1 +/-
0.6) 1E43 erg/s, a value substantially lower than the prediction by Daddi et
al. (2007).Comment: 45 pages, 36 figures, 2 tables, accepted for publication on Ap
Visual hallucinations in the psychosis spectrum and comparative information from neurodegenerative disorders and eye disease
Much of the research on visual hallucinations (VHs) has been conducted in the context of eye disease and neurodegenerative conditions, but little is known about these phenomena in psychiatric and nonclinical populations. The purpose of this article is to bring together current knowledge regarding VHs in the psychosis phenotype and contrast this data with the literature drawn from neurodegenerative disorders and eye disease. The evidence challenges the traditional views that VHs are atypical or uncommon in psychosis. The weighted mean for VHs is 27% in schizophrenia, 15% in affective psychosis, and 7.3% in the general community. VHs are linked to a more severe psychopathological profile and less favorable outcome in psychosis and neurodegenerative conditions. VHs typically co-occur with auditory hallucinations, suggesting a common etiological cause. VHs in psychosis are also remarkably complex, negative in content, and are interpreted to have personal relevance. The cognitive mechanisms of VHs in psychosis have rarely been investigated, but existing studies point to source-monitoring deficits and distortions in top-down mechanisms, although evidence for visual processing deficits, which feature strongly in the organic literature, is lacking. Brain imaging studies point to the activation of visual cortex during hallucinations on a background of structural and connectivity changes within wider brain networks. The relationship between VHs in psychosis, eye disease, and neurodegeneration remains unclear, although the pattern of similarities and differences described in this review suggests that comparative studies may have potentially important clinical and theoretical implications. © 2014 The Author
Obersteinbach (Bas-Rhin). ChĂąteau du Petit-Arnsberg
Dans les annĂ©es 1960, le chĂąteau du Petit-Arnsberg a fait lâobjet de fouilles clandestines qui ont mis au jour la base dâun poĂȘle et des carreaux. Au total, prĂšs de 30 carreaux figurĂ©s et plusieurs carreaux-bol ont Ă©tĂ© mis au jour. En dĂ©cembre 2011, cette base a Ă©tĂ© (re)mise au jour afin de lâĂ©tudier et de la localiser avec prĂ©cision. Un sondage a donc Ă©tĂ© entrepris au niveau du premier Ă©tage du logis. Cette opĂ©ration a exhumĂ© une plaque de grĂšs blanc (165 cm x 81 cm x 6,5 cm) entourĂ©e sur de..
Lembach (Bas-Rhin). ChĂąteau du Fleckenstein
Chaque annĂ©e, dĂ©but juillet, une journĂ©e de travail bĂ©nĂ©vole est organisĂ©e sur le chĂąteau du Fleckenstein. LâĂ©dition 2012 avait comme projet, entre autres, dâabaisser le niveau de la piĂšce n° 71, afin de satisfaire aux normes de sĂ©curitĂ© et dâĂ©viter la mise en place dâune rambarde. Cette piĂšce (ou bĂątiment) se situe dans la basse cour et fait partie des communs, mais sa fonction exacte nâest pas connue. Toute cette partie a Ă©tĂ© crĂ©Ă©e au xve et xvie s. lors des transformations du chĂąteau princ..
La cĂ©ramique de poĂȘle en Alsace (xive-xviie siĂšcles) : sociĂ©tĂ©s, arts, techniques
« M. de Montaigne, qui couchait dans un poĂȘle, sâen louait fort et de sentir toute la nuit une tiĂ©deur dâair plaisante et modĂ©rĂ©e. Au moins on ne sây brĂ»le ni le visage ni les bottes et est-on quitte des fumĂ©es de France. Aussi, lĂ oĂč nous prenons nos robes de chambres chaudes et fourrĂ©es entrant au logis, eux, au rebours, se mettent en pourpoint et se tiennent la tĂȘte dĂ©couverte au poĂȘle, et sâhabillent chaudement pour se remettre Ă lâair ».Cet extrait du Journal de Voyage de Montaigne raconte
Ceramic tle stoves in Alsace (14th-17th centuries) : arts, techniques, societies
Le sujet de la cĂ©ramique de poĂȘle en Alsace a Ă©tĂ© peu traitĂ© et de maniĂšre trĂšs large. Le prĂ©senttravail sâintĂ©resse plus spĂ©cifiquement aux carreaux et Ă leurs motifs pour la pĂ©riode allant du XIVeau dĂ©but du XVIIe siĂšcle.La constitution de notre corpus nous a amenĂ© Ă travailler sur les collections des musĂ©es et desorganismes archĂ©ologiques, mais aussi sur les collections privĂ©es, Ă travers toute lâAlsace.Lâattention est portĂ©e avant tout sur les dĂ©cors et sur leur rĂ©partition dans le temps et dans lâespace,ainsi quâau sein des diffĂ©rents types de sites (urbains, ruraux, castraux, miniers) et par extension, Ă la rĂ©partition des motifs dĂ©coratifs en fonction des catĂ©gories sociales de la population dâentreVosges et Rhin pour les Ă©poques considĂ©rĂ©es.Lâanalyse des motifs alsaciens et de leurs variantes a permis de localiser (au sein dâune zonegĂ©ographique) des ateliers produisant des carreaux aux dĂ©cors spĂ©cifiques ou comportant une petitevariante par rapport Ă un mĂȘme motif. Cette Ă©tude a Ă©tĂ© complĂ©tĂ©e par une dĂ©marchearchĂ©omĂ©trique.Ce sujet se veut pluridisciplinaire et traite Ă la fois dâarchĂ©ologie, dâhistoire, dâarts et de sociologie.Ceramic tile stoves in Alsace is a subject that has been rarely dealt with and often studied in a broadway. This work concerns more specifically tiles produced in Alsace (France) from the 14th to the 17thcentury and their patterns.In order to create our corpus, we worked on several collections, either public or private, coming frommuseums and archaeological organizations all across Alsace. We specifically focused on thepatterns and their repartitions through time and space, but also within the different types of sites(urban or rural sites, mines, fortified castles) and, by extension, on the repartition of the decorativepatterns depending on the social groups of population living between the Vosges and the Rhine overthe time periods concerned.Analysing the patterns existing in Alsace and their variations allowed to identify (within ageographical area) workshops producing tiles with specific patterns or containing a slight variationfrom the same pattern. This study had been completed with an archaeometrical approach.This subject aims to be multidisciplinary, including Archaeology, History, Arts and Sociology
Epigenetic alterations of muscle stem cells during natural aging : implication in sarcopenia
Le dĂ©clin de la masse musculaire au cours du vieillissement physiologique, appelĂ© sarcopĂ©nie, est un phĂ©nomĂšne progressif dont les consĂ©quences sur la santĂ© peuvent ĂȘtre dĂ©sastreuses. Les cellules souches assurant lâhomĂ©ostasie musculaire, appelĂ©es cellules satellites, perdent progressivement leur capacitĂ©Ì Ă rĂ©gĂ©nĂ©rer le tissu endommagĂ©. Les mĂ©canismes prĂ©cis de ce processus dĂ©gĂ©nĂ©ratif sont encore mal connus et semblent impliquer des altĂ©rations des marques Ă©pigĂ©nĂ©tiques qui rĂ©gulent lâexpression des gĂšnes des cellules satellites.Cette thĂšse a portĂ© sur les mĂ©canismes conduisant Ă cette incapacitĂ© progressive des cellules satellites Ă fabriquer de nouvelles fibres musculaires avec lâĂąge. Les travaux ont Ă©tĂ© menĂ©s autour de deux axes : le rĂŽle dâUTX dans le contrĂŽle de lâexpression des gĂšnes musculaires et plus particuliĂšrement leur Ă©pissage ; les consĂ©quences des altĂ©rations du niveau de trimĂ©thylation de la lysine 27 de lâhistone H3 (H3K27me3) rĂ©gulĂ© par UTX dans les cellules satellites de souris dites « gĂ©riatriques ».Nous avons ainsi dĂ©montrĂ© quâUTX Ă©tait nĂ©cessaire Ă diffĂ©rentes Ă©tapes du processus de diffĂ©renciation en permettant dâune part dâactiver la transcription des gĂšnes et dâautre part de rĂ©guler leurs Ă©pissages alternatifs en rĂ©gulant plusieurs facteurs dâĂ©pissage.Chez les individus ĂągĂ©s, lâexpression dâUTX est altĂ©rĂ©e avec pour consĂ©quence une modification du profil Ă©pigĂ©nĂ©tique des cellules satellites et une perturbation de leur programme dâexpression gĂ©nique. Enfin, des rĂ©sultats prĂ©liminaires suggĂšrent quâUTX participe aussi au « syndrome inflammatoire chronique » observĂ© chez les souris ĂągĂ©es, en rĂ©gulant lâexpression de facteurs pro et anti-inflammatoires comme lâIL-6. Ces travaux ont permis de mettre en Ă©vidence le rĂŽle dâUTX Ă diffĂ©rents niveaux de rĂ©gulation de lâexpression des gĂšnes dans les cellules musculaires et dâexpliquer en partie les dĂ©fauts de rĂ©gĂ©nĂ©ration liĂ©s Ă lâĂąge.The decline in muscle mass during physiological aging, called sarcopenia, is a progressive phenomenon whose consequences on health can be disastrous. Muscle stem cells, also called satellite cells, ensure muscle homeostasis. They gradually lose the ability to regenerate damaged tissue with age. The precise mechanisms of this degenerative process are still poorly understood but it seems to imply alterations of the epigenetic marks regulating gene expression in satellite cells.This thesis has focused on the mechanisms leading to this progressive incapacity of the satellite cells to make new muscle fibers with age. The work is divided in two major parts: the role of UTX on the expression of muscle genes and more particularly their splicing and the consequences of the alterations in the trimethylation level of histone H3 lysine 27 (H3K27me3) regulated by UTX in the satellite cells of so-called "geriatric" mice.We have thus demonstrated that UTX is necessary at different stages of the differentiation process to activate gene transcription and alternative splicing.In elderly individuals, the expression of UTX is altered, resulting in modifications of the epigenetic profile of the satellite cells and a disruption of their gene expression program. Finally, preliminary results suggest that UTX also participates in the "chronic inflammatory syndrome" observed in elderly mice, regulating the expression of pro-inflammatory factors such as IL-6.This work allowed us to highlight the role of UTX at different levels of regulation of gene expression in muscle cells, explaining at least in part the defects of regeneration related to aging
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