Local adsorption structure and bonding of porphine on Cu(111) before and after self-metalation

We have experimentally determined the lateral registry and geometric structure of free-base porphine (2H-P) and copper-metalated porphine (Cu-P) adsorbed on Cu(111), by means of energy-scanned photoelectron diffraction (PhD), and compared the experimental results to density functional theory (DFT) calculations that included van der Waals corrections within the Tkatchenko-Scheffler approach. Both 2H-P and Cu-P adsorb with their center above a surface bridge site. Consistency is obtained between the experimental and DFT-predicted structural models, with a characteristic change in the corrugation of the four N atoms of the molecule's macrocycle following metalation. Interestingly, comparison with previously published data for cobalt porphine adsorbed on the same surface evidences a distinct increase in the average height of the N atoms above the surface through the series 2H-P, Cu-P, cobalt porphine. Such an increase strikingly anti-correlates the DFT-predicted adsorption strength, with 2H-P having the smallest adsorption height despite the weakest calculated adsorption energy. In addition, our findings suggest that for these macrocyclic compounds, substrate-to-molecule charge transfer and adsorption strength may not be univocally correlated

Editorial

Sin resume

Compensación de procesos con retardo bajo Foundation Fieldbus

[Resumen] En este artículo se describen los modos de compensación de lazos de control afectados de retardo puro utilizando las técnicas aplicables en arquitecturas Fundation Fieldbu

Administración de recursos algorítmicos en dispositivos Foundation Fieldbus

[Resumen] En este artículo se revisan las pautas para administrar los recursos de Fundation Fieldbus (FF) en la implementación de algoritmos de control de cara al aprovechamiento óptimo de los dispositivos basados en (FF

Bis(tetra­methyl­amonium) bis­(2,4,5-carboxy­benzoate)–benzene-1,2,4,5-tetra­carboxylic acid (1/1)

The asymmetric unit of the title compound, 2C4H12N+·2C10H5O8 −·C10H6O8, consists of a tetra­methyl­amonium cation, an anion derived from the singly deprotonated pyromellitic acid anion, 2,4,5-carboxy­benzoate (H3bta−), and one-half of a benzene-1,2,4,5-tetra­carboxylic acid (H4bta) mol­ecule, which has the centroid of the aromatic ring positioned at a crystallographic centre of inversion. The H4bta and H3bta− residues are involved in an extensive inter­molecular O—H⋯O hydrogen-bonding network, which leads to a three-dimensional supra­molecular structure containing one-dimensional channels running parallel to the [001] crystallographic direction. These channels house the tetra­methyl­amonium cations

Body composition in breast cancer survivors in Sonorenses women

INTRODUCTION: Breast cancer is the most common type of cancer in the worldwide. In the same sense, this disease is one of the most common cancers affecting Mexican women. In the year 2014 in México, there were 11,372 new cases of breast cancer with an incidence rate of 22.56 per 100,000 in habitants older than 10 years. Women with breast cancer are often subjected to an operation due to this affectation which decreases its functionality and body composition. PURPOSE: To examine the body composition in breast cancer survivors in a sample of women from Hermosillo, Sonora, México. METHODS: This study was a cross-sectional descriptive study design. 21 women with breast cancer who had been operated on left arm and had been recruited at one university-based exercise program for breast cancer survivors in Hermosillo, Sonora, México. Body composition (BC) was measured. The right arm non-operated was considered as control. Statistical difference between the operated versus non-operated arm were determined with t-student test for independent samples. RESULTS: In the present study, body fat (1719.1 ± 456.7 vs. 1819.8 ± 467.9 grams, p ≤ 0.05), lean mass (1960.2 ± 308.7 vs. 2151.5 ± 313.5 grams, p ≤ 0.05) and total body mass (3679.3 ± 643.3 vs. 3971.1 ± 675.9 grams, p ≤ 0.05) of the left operated arm of women who breast cancer survivors were significantly lower than the mean of the right non-operated arm. CONCLUSION: Breast cancer survivors’ women who have underwent an operation on their left arm sowed a lower percentage of fat, fat mass and total mass compared to their non-operate arm. The present study underline the importance to apply rehabilitation or exercise program focused to reduce the changes in the body composition

Optical photometry of the UCM Lists I and II. II-B band surface photometry and morphological discussion

We present Johnson B surface photometry for the UCM Survey galaxies. One-dimensional bulge-disk decomposition is attempted, discussing on fitting functions and computational procedures. The results from this decomposition, jointly with concentration indices and an asymmetry coefficient, are employed to study the morphological properties of these galaxies. We also compare our results with the previous morphological classification established using Gunn r imaging data and with other samples of galaxies. No major statistical differences in morphology are found between red and blue data, although some characteristics such as size and luminosity concentration vary. We find a correlation between luminosity and size. Several parameters are used to segregate the objects according to their morphological type.Comment: 19 pages, 20 PostScript figures, accepted for publication in A&A, also available via anonymous ftp at ftp://cutrex.fis.ucm.es/pub/OUT/pag/PAPERS/AA0