Ergotismo inducido por ritonavir

En la actualidad, el ergotismo es una enfermedad poco frecuente, con una incidencia estimada de 0,01% entre los pacientes que consumen preparados de ergotamina, y que debido a su amplia gama de manifestaciones puede representar un reto diagnóstico para el médico si no se tieneunafuertesospecha de su existencia

W and Mo doped TiO2: Synthesis, characterization and photocatalytic activity

W-doped TiO2 and Mo-doped TiO2 photocatalysts were synthesized by EISA method and were characterized by different techniques. The photoactivity of these materials was evaluated by the degradation of 4- chlorophenol without oxygen supply. The catalysts exhibited only anatase crystalline phase and high specific surface areas of about 179 m2 g 1. The amount of dopant cations in TiO2 was a key parameter to increase the photoactivity. The results obtained show that with low dopant concentrations the degradation is improved, and this can be attributed to an increase in the lifetime of the photogenerated charges due to that dopant cations may easily trap electrons decreasing the recombination rate. Doped photocatalysts degraded 95% of 4CP, three times faster than Degussa P25. 69% reduction of total organic carbon (TOC) content was achieved by 1 wt.% W-doping

1,3-Bis[(naphthalen-2-ylsulfan­yl)meth­yl]benzene

Mol­ecules of the title compound, C28H22S2, are located on a crystallographic mirror plane with one half-mol­ecule in the asymmetric unit. The dihedral angle between the phenyl ring and the naphthyl unit is 83.14 (7)°. In the crystal, mol­ecules are inter­connected by C—H⋯S and C—H⋯π inter­actions

Enhanced Photocatalytic Activity of Titania by Co-Doping with Mo and W

Various W and Mo co-doped titanium dioxide (TiO2) materials were obtained through the EISA (Evaporation-Induced Self-Assembly) method and then tested as photocatalysts in the degradation of 4-chlorophenol. The synthesized materials were characterized by thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy (RS), N2 physisorption, UV-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The results showed that the W-Mo-TiO2 catalysts have a high surface area of about 191 m2/g, and the presence of an anatase crystalline phase. The co-doped materials exhibited smaller crystallite sizes than those with one dopant, since the crystallinity is inhibited by the presence of both species. In addition, tungsten and molybdenum dopants are distributed and are incorporated into the anatase structure of TiO2, due to changes in red parameters and lattice expansion. Under our experimental conditions, the co-doped TiO2 catalyst presented 46% more 4-chlorophenol degradation than Degussa P25. The incorporation of two dopant cations in titania improved its photocatalytic performance, which was attributed to a cooperative effect by decreasing the recombination of photogenerated charges, high radiation absorption capacity, high surface areas, and low crystallinity. When TiO2 is co-doped with the same amount of both cations (1 wt.%), the highest degradation and mineralization (97% and 74%, respectively) is achieved. Quinones were the main intermediates in the 4 chlorophenol oxidation by W-Mo-TiO2 and 1,2,4-benzenetriol was incompletely degraded.PROMEP (project 103.5/13/S257) CONACYT (project 269093). Scholarship 378292 by CONACY

trans-Bis(5-amino-1,3,4-thia­diazol-2-thio­lato-κS 2)bis­(triphenyl­phosphane-κP)palladium(II) dimethyl sulfoxide disolvate hemihydrate

The title complex, [Pd(C2H2N3S2)2(C18H15P)2]·2C2H6OS·0.5H2O, was obtained from the reaction of trans-[(Ph3P)2PdCl2] with 5-amino-1,3,4-thia­diazole-2-thione (SSNH2) in a 2:1 molar ratio. The PdII atom, located in a crystallographic center of symmetry, has a square-planar geometry with two triphenyl­phosphine P-coordinated mol­ecules and two SSNH2 ligands with the S atoms in a trans conformation. The latter ligand exhibits N—H⋯N hydrogen-bonding contacts formed by the amino group with the thia­diazole ring, generating a chain along the c axis. The asymmetric unit contains one half of the complex mol­ecule along with disordered dimethyl sulfoxide and water mol­ecules

Modelo de Datos para Gestionar Cursos Impartidos por el CCPGRO

The present article describes the design of the data model to automate the processes associated with the sale and administration of courses and diplomas offered by CCPGRO (Public Accountants College of the State of Guerrero.) (CCPGRO, 2023). The design of the data model represents the first stage in developing the web system to manage all the processes related to the sale and administration of courses and diplomas. The development of the data modeling was divided into three stages, following the execution of the waterfall methodology. The first stage encompasses the analysis and definition of requirements, while the second stage presents the conceptual framework where classes, attributes, and methods are identified. The third stage results in the entity-relationship diagram, which displays the high-level data model of the database to be implemented. The obtained diagrams are created using the Unified Modeling Language (UML) (Rumbaugh, Jacobson, & Booch, 1999) and the Business Process Model Notation (BPMN) standard (Analitica, 2011).El presente artículo describe el diseño del modelo de datos para automatizar los procesos asociados a la venta y administración de cursos y diplomados que ofrece e imparte el CCPGRO (Colegio de Contadores Públicos del Estado de Guerrero) (CCPGRO, 2023). El diseño del modelo de datos representa la primera etapa para desarrollar el sistema web para gestionar todos los procesos asociados a la venta y administración de cursos y diplomados. El desarrollo del modelado de datos se dividió en tres etapas, a la par que se ejecuta la metodología cascada. Como primera etapa se muestra el análisis y definición de requerimientos; en la segunda etapa se muestra el marco conceptual donde se identifican las clases, atributos y métodos; y en la tercera etapa se muestra como resultado el diagrama entidad-relación que muestra el modelo de datos de alto nivel de la base de datos a implementar. Los diagramas obtenidos, se elaboran utilizando el Lenguaje de Modelado Unificado (UML) (Rumbaugh, Jacobson, & Booch, 1999) y el estándar BPMN (Business Process Model Notation) (Analitica, 2011)

Feocromocitoma relacionado a mielolipoma

Mujer de 42 años que ingresó por hipertensión arterial maligna. Se le halló una tumoración suprarrenal izquierda de característica grasa, con elevación de las metanefrinas en orina de 24 horas. Con el diagnóstico de feocromocitoma, se le realizó una adrenalectomía. Se halló un mielolipioma. Después, la presión arterial se normalizó y la excreción de metanefrinas en orina de 24 horas estuvieron dentro de valores normales