Gender of authors in the Mexican Journal of Behavior Analysis: changes over time [GÉNERO DE LOS AUTORES DE LA REVISTA MEXICANA DE ANÁLISIS DE LA CONDUCTA: CAMBIOS A TRAVÉS DEL TIEMPO]

The Mexican Journal of Behavior Analysis was examined from 1975 to 2018 to determine the proportion of authorship by women and men. Data were compiled and assessed for the percentage of authorship, percentage of first-authored publications, percentage of publications with at least one woman, and percentage of publications with at least one man. From the journal’s inception to 2018, women and men accounted for 33% and 67% of authorship, respectively. The data suggest that women’s participation, based on percentages of total authorship, has increased across time. - Con el propósito de determinar la proporción de autores mujeres y hombres, se analizaron los artículos publicados en la Revista Mexicana de Análisis de la Conducta de 1975 a 2018. Con base en los datos recopilados, se evaluó el porcentaje de artículos publicados, el porcentaje de artículos publicados como primer autor, el porcentaje de publicaciones con al menos una mujer como autora y el porcentaje de publicaciones con al menos un hombre como autor. Desde la creación de la revista hasta 2018, las mujeres y los hombres conformaron el 33% y el 67% de los autores, respectivamente. Con base en los porcentajes del total de publicaciones, los datos sugieren que la participación de las mujeres de hecho ha aumentado a través del tiempo

Gender of Authors in the Brazilian Journal of Behavior Analysis [Gênero dos autores na Revista Brasileira de Análise do Comportamento]

We examined publication records in the Brazilian Journal of Behavior Analysis from 2005 through 2020 to determine the participation of women and men as contributing authors. We assessed the following variables: authorship (in general), first authors, articles with at least one woman, articles with at least one man, articles with both men and women, single-author articles, and authors with more than 10 publications. We identified 281 articles, with a total of 732 listed authors. Women and men were listed as authors 361 (49%) and 368 (50%) times, respectively. Women accounted for 43% of articles as first authors, and 69% of articles listed at least one woman as an author. These data are discussed and compared to data from other behavior-analytic journals. - Examinamos o registro de publicação, de 2005 a 2020, do Revista Brasileira de Análise do Comportamento para determinar a participação de mulheres e homens como autores colaboradores. Foram avaliadas as seguintes variáveis: autoria (em geral), primeiros autores, artigos com pelo menos uma mulher, artigos com pelo menos um homem, artigos de ambos os sexos, artigos de autoria única e autores com mais de 10 publicações. Identificamos 281 artigos, com um total de 732 autores listados. Mulheres e homens foram listados como autores 361 (49%) e 368 (50%) vezes, respectivamente. As mulheres representaram 43% dos artigos como primeiros autores e 69% dos artigos listaram pelo menos uma mulher como autora. Esses dados são discutidos e comparados com dados de outros periódicos analíticos comportamentais

Centimetre continuum emission from young stellar objects in Cederblad 110

The low-mass star formation region associated with the reflection nebula Cederblad 110 in the Chamaeleon I cloud was mapped with the Australian Telescope Compact Array (ATCA) at 6 and 3.5cm. Altogether 11 sources were detected, three of which are previously known low mass young stellar objects associated with the nebula: the illuminating star IRS2 (Class III, Einstein X-ray source CHX7), the brightest far-infrared source IRS4 (Class I), and the weak X-ray source CHX10a (Class III). The other young stellar objects in the region, including the Class 0 protostar candidate Cha-MMS1, were not detected. The radio spectral index of IRS4 (alpha = 1.7 +/- 0.3) is consistent with optically thick free-free emission arising from a dense ionized region, probably a jet-induced shock occurring in the circumstellar material. As the only Class I protostar with a 'thermal jet' IRS4 is the strongest candidate for the central source of the molecular outflow found previously in the region. The emission from IRS2 has a flat spectrum (alpha = 0.05 +/- 0.05) but shows no sign of polarization, and therefore its origin is likely to be optically thin free-free emission either from ionized wind or a collimated jet. The strongest source detected in this survey is a new compact object with a steep negative spectral index (-1.1) and a weak linear polarization (about 2 %), which probably represents a background radio galaxy.Comment: 7 pages, 2 Postscript figures. Accepted for publication in Astronomy & Astrophysic

High-efficiency receptor-mediated delivery of small and large (48 kilobase gene constructs using the endosome-disruption activity of defective or chemically inactivated adenovirus particles.

One limit to successful receptor-mediated gene delivery is the exit of the endocytosed material from the endosome. We demonstrate here the delivery of marker genes to tissue culture cells using a modification of the receptor-mediated gene delivery technique that exploits the endosomolytic activity of defective adenovirus particles. In particular, greater than 90% of the transfected-cell population is found to express a beta-galactosidase gene, and, most importantly, this high level of expression can be obtained with psoralen-inactivated virus particles. Furthermore, because the delivered gene is not carried within the genome of the adenovirus particle, the size constraints are relieved, and we can, therefore, show the delivery of a 48-kilobase cosmid DNA molecule

Coupling of adenovirus to transferrin-polylysine/DNA complexes greatly enhances receptor-mediated gene delivery and expression of transfected genes.

We are developing efficient methods for gene transfer into tissue culture cells. We have previously shown that coupling of a chimeric adenovirus with polylysine allowed the construction of an adenovirus-polylysine-reporter-gene complex that transferred the transporter gene with great efficiency into HeLa cells. We have now explored simpler, biochemical means for coupling adenovirus to DNA/polylysine complexes and show that such complexes yield virtually 100% transfection in tissue culture cell lines. In these methods adenovirus is coupled to polylysine, either enzymatically through the action of transglutaminase or biochemically by biotinylating adenovirus and streptavidinylating the polylysine moiety. Combination complexes containing DNA, adenovirus-polylysine, and transferrin-polylysine have the capacity to transfer the reporter gene into adenovirus-receptor- and/or transferrin-receptor-rich cells

Transferrinfection. A Highly Efficient Way to Express Gene Constructs in Eukaryotic Cells

No abstract available

The Circumstellar Structure and Excitation Effects around the Massive Protostar Cepheus A HW 2

We report SMA 335 GHz continuum observations with angular resolution of ~0.''3, together with VLA ammonia observations with ~1'' resolution toward Cep A HW 2. We find that the flattened disk structure of the dust emission observed by Patel et al. is preserved at the 0.''3 scale, showing an elongated structure of ~$0.''6 size (450 AU) peaking on HW 2. In addition, two ammonia cores are observed, one associated with a hot-core previously reported, and an elongated core with a double peak separated by ~1.''3 and with signs of heating at the inner edges of the gas facing HW 2. The double-peaked ammonia structure, as well as the double-peaked CH3CN structure reported previously (and proposed to be two independent hot-cores), surround both the dust emission as well as the double-peaked SO2 disk structure found by Jimenez-Serra et al. All these results argue against the interpretation of the elongated dust-gas structure as due to a chance-superposition of different cores; instead, they imply that it is physically related to the central massive object within a disk-protostar-jet system.Comment: 12 pages, 3 figures; accepted for publication in the Astrophysical Journa