A photometric and astrometric investigation of the brown dwarfs in Blanco 1

We present the results of a photometric and astrometric study of the low mass stellar and substellar population of the young open cluster Blanco 1. We have exploited J band data, obtained recently with the Wide Field Camera (WFCAM) on the United Kingdom InfraRed Telescope (UKIRT), and 10 year old I and z band optical imaging from CFH12k and Canada France Hawaii Telescope (CFHT), to identify 44 candidate low mass stellar and substellar members, in an area of 2 sq. degrees, on the basis of their colours and proper motions. This sample includes five sources which are newly discovered. We also confirm the lowest mass candidate member of Blanco 1 unearthed so far (29MJup). We determine the cluster mass function to have a slope of alpha=+0.93, assuming it to have a power law form. This is high, but nearly consistent with previous studies of the cluster (to within the errors), and also that of its much better studied northern hemisphere analogue, the Pleiades.Comment: 8 Pages, 5 Figures, 2 Tables and 1 Appendix. Accepted for publication in MNRA

Aux limites du déterminant nominal quantifieur : (un+ il) coro di / (un+ le) chœur de (et autres lexèmes musicaux)

le fichier déposé correspond à une version ultérieureInternational audienceIn (P-A. Buvet et J -H.Lim 1996) and (Buvet 1993), phrases such as un concert de protestations and une litanie de réclamations are classified as complex determiners by means of a number of criteria. Their underlined Ns relate to music, as happens with un chœur de mécontents / un coro di proteste, etc. The criteria proposed in the works of (M. Gross 1985 ; P-A. Buvet 2001 ; X. Blanco 1998 ; 2002) are efficient for such music related Ns. A contrastive analysis (French vs. Italian) leads to the conclusions reached in Blanco (2002) and (Mirto ; Necker 2007).Parce qu'un concert de protestations (P-A. Buvet et J -H.Lim 1996) et une litanie de réclamations (P-A. Buvet 1993, table C16) sont classés parmi les déterminants nominaux métaphoriques, nous voudrions interroger par les critères avancés dans les travaux substantiels de (M. Gross 1985 ; P-A. Buvet 2001 ; X. Blanco 1998 ; 2002), quelques syntagmes à référence musicale dont le classement nous pose problèmes : un chœur de mécontents/ un coro di proteste, etc. L'approche comparée (ici italien/français) porte, on le verra, aux mêmes conclusions que celles de Blanco (2002) et Mirto et Necker (2007)

Differential elastic electron scattering cross sections for CCl₄ by 1.5–100 eV energy electron impact

We report absolute elastic differential, integral and momentum transfer cross sections for electron interactions with CCl₄. The incident electron energy range is 1.5-100 eV, and the scattered electron angular range for the differential measurements varies from 15°-130°. The absolute scale of the differential cross section was set using the relative flow technique with helium as the reference species. Comparison with previous total cross sections shows good agreement. Atomic-like behaviour in this scattering system is shown here for the first time, and is further investigated by comparing the CCl₄ elastic cross sections to recent results on the halomethanes and atomic chlorine at higher impact energies [H. Kato, T. Asahina, H. Masui, M. Hoshino, H. Tanaka, H. Cho, O. Ingólfsson, F. Blanco, G. Garcia, S. J. Buckman, and M. J. Brunger, J. Chem. Phys. 132, 074309 (2010)].This work was conducted under the support of the Japanese Ministry of Education, Sport, Culture and Technology. H.K. acknowledges the Japan Society for the Promotion of Science (JSPS) for his fellowships as grants-in-aid for scientific research. S.J.B also acknowledges the JSPS Invitation Fellowship for Research in Japan

Book Reviews and Book Notices

Obra ressenyada: H. SCHEMANN; C. MELLADO BLANCO; P. BUJÁN OTERO; N. IGLESIAS; J. P. LARRETA; A. MANSILLA PÉREZ, Idiomatik Deutsch-Spanisch = Diccionario idiomático alemán-español. Hamburg: Helmut Buske Verlag, 2013

Relationship between thoracic kyphosis and neural axis abnormalities in patients with adolescent idiopathic scoliosis.

Purpose:Previous studies have suggested an association between increased thoracic kyphosis and neural axis abnormalities in patients with adolescent idiopathic scoliosis (AIS). However, the basis for this finding is unclear, and this association has been mainly noted in retrospective studies on a non-consecutive series of patients. The purpose of this study was to assess the relationship between thoracic kyphosis and neural axis abnormalities in patients with AIS. Methods:We studied a consecutive series of AIS patients treated with spinal fusion. Thoracic kyphosis (T2 to T12) was measured from preoperative lateral radiographs. All patients underwent a spine magnetic resonance imaging (MRI) prior to surgery, and MRI reports were reviewed to determine the presence of neural axis abnormalities. Statistical analyses included descriptive statistics and chi-squared analysis. Results:This study included 210 patients with AIS. There were no significant differences in age or gender between patients with thoracic hypokyphosis (kyphosis < 20°), normal thoracic kyphosis (kyphosis 20° to 40°) and thoracic hyperkyphosis (kyphosis > 40°) (p > 0.05). Neural axis abnormalities were present in 17.9% of patients with thoracic hypokyphosis, 9.8% of patients with normal thoracic kyphosis and 13.6% of patients with thoracic hyperkyphosis (p = 0.60). There were no significant differences in rates of Chiari malformation, syrinx, intra-spinal masses and other central nervous system abnormalities between groups (p > 0.05). Conclusions:Thoracic kyphosis was not associated with neural axis abnormalities in our consecutive series of patients with AIS. Increased thoracic kyphosis may not be a reliable indicator for the presence of neural axis abnormalities in patients with AIS. Level of Evidence:IV

Propionibacterium acnes infections in patients with idiopathic scoliosis: a case-control study and review of the literature.

Purpose:Surgical site infection (SSI) caused by Propionibacterium acnes is an infrequent but devastating complication after spinal fusion. The purpose of this study was to identify risk factors for SSI with Propionibacterium acnes after spinal fusion for juvenile and adolescent idiopathic scoliosis (JIS and AIS). Methods:A case-control study was performed. Each case was matched 2:1 for age, gender and diagnosis. Retrospective chart review was performed to obtain relevant demographic, surgical and clinical data for all cases and controls. Statistical analysis included paired t-test and McNemar test, as well as exact logistic regression and robust regression models. Results:This study included ten infection cases (eight AIS, two JIS) and 20 controls (16 AIS, four JIS). In total, six infected cases presented within two weeks of the index procedure (acute infection) and four infected cases presented more than one year from the index procedure (delayed infection). The most common presentation for acute infections was wound drainage, while back pain was more common in delayed infections. All infections were successfully treated with surgical irrigation and debridement and postoperative antibiotics. Hardware was removed for patients with delayed infections. The strongest risk factor for infection was increased requirement for blood transfusion, but it did not reach statistical significance. Conclusion:SSI with Propionibacterium acnes is an important complication after spinal fusion for idiopathic scoliosis. These infections can be successfully treated, but larger studies are needed to further identify risk factors and establish standardized guidelines for the treatment and prevention of this complication. Level of Evidence Level III

Actualización de la colección de tipos del herbario MACB, II

CARRASCO, M. A. & MARTÍN-BLANCO, C. J. 2002. Actualización de la colección de Tipos del Herbario MACB. Bot. Complutensis, 26: 59-62. Se actualiza la Colección de Tipos del Herbario MACB, presentando los Typus de siete nombres. Señalamos la categoria de cada Tipo y los herbarios que tienen material tipo de los mismos taxones. Los nuevos Tipos son: 2 Holotypus, 4 Isotypus, 1 Isolectotypus y 2 Sintypus.CARRASCO, M. A. & MARTÍN-BLANCO, C. J. 2002. Update of the MACB type collection, II. Bot. Complutensis, 26: 59-62. In this paper the Type collection of the MACB Herbarium is update. We indicate the category of seven names (Holotypus, Isotypus Isolectotypus or Sintypus), as well as the herbariums with other type specimens of the same taxa. The new Typus are: 2 Holotypus, 4 Isotypus, 1 Isolectotypus and 2 Sintypus

The Mozarabic Cardinal.The Life and Times of Gonzalo Pérez Gudiel [Reseña]

Es reseña de: Francisco J. Hernández / Peter Linehan, The Mozarabic Cardinal. The Life and Times of Gonzalo Pérez Gudiel. Firenze, Sismel-Edizioni del Galluzzo, 2004. 644 pp. + 20 pp. de láminas en blanco y negro. ISBN: 88-84-50-042-

Notas de flora hispánica IV.

MARTÍN-BLANCO, C. J. & M. A. CARRASCO. 2001. Notas de flora hispanica, IV. Bot. Complutensis 25: 309-312. Se presentan 12 táxones de plantas vasculares recolectadas en España, de las que 10 son primeras citas para la provincia de que se trate. Sus pliegos testigo están depositados en el herbario MACB de la Facultad de Ciencias Biológicas de la Universidad Complutense.MARTÍN-BLANCO, C. J. & M. A. CARRASCO. 2001. Notes about spanish flora, IV. Bot. Complutensis 25: 309-312. We present 12 taxa of vascular plants collected in Spain. Among them 10 are the first provincial records. All of them are testified by sheets deposited in the herbarium of the Vegetal Biology Department of the Universidad Complutense (Herbarium MACB