Abstract The structural, morphological, and optical properties of α-SnWO4 synthesized by microwave-assisted hydrothermal method at 150 °C for different times were investigated. XRD revealed the formation of the orthorhombic phase, without the presence of a secondary phase. The sample processed for 64 min showed a reduction in unit cell volume, suggesting a decrease in the structural defects present in the sample. The Raman spectroscopy confirmed the formation of α-SnWO4, with the presence of vibrational modes attributed to the [WO6] octahedron. FE-SEM images revealed the formation of agglomerate nanosheets in all samples. The band gap (Egap) of the samples presented values in the range from 1.58 to 1.70 eV. The increase in Egap value of the sample processed for 64 min corroborated the decrease in the structural defects suggested by the Rietveld refinement. Finally, the photoluminescence was measured, with maximum emission in the blue region of the electromagnetic spectrum around 454 nm, which was attributed to the [WO6] octahedron.

Objectives: To determine the nutritional status of patients admitted to hospital for the first time the hematology service and who have not received treatment for cancer, to know if the nutritional status assessed by the EGS-GP and serum albumin related mortality of patients Methods: A longitudinal, prospective, analytical. EGS-Through GP assessed the nutritional status of patients, we used SPSS 19.0 for data analysis. Results: Evaluaron 119 patients, 52.1% female and 47.9% male. The most common diagnosis was non-Hodgkin lymphoma in 43.7%. According to the EGS-GP 50.4% of patients had some degree of malnutrition or was at risk of suffering of which: 31.1% had moderate and 19.3% had severe malnutrition. The 49.6% of patients had an adequate nutritional status. 30.3% of the patients who died, 37% had severe malnutrition and 50% severe decrease in albumin concentration. Conclusions: The prevalence of malnutrition in hematological patients treated at the National Cancer Institute of Mexico that have not received medical treatment was high. There is an association between nutritional status and mortality in this patient group.

Objetivos: Determinar el estado de nutrición de los pacientes que ingresan por primera vez a hospitalización del servicio de hematología y que no han recibido tratamiento oncológico, conocer si el estado de nutrición evaluado por medio de la EGS-GP y por concentración sérica de Albúmina se relaciona con la mortalidad de los pacientes. Métodos: Estudio longitudinal, prospectivo, analítico. Por medio de EGS-GP se evaluó el estado nutricional de los pacientes, Se utilizó el paquete estadístico SPSS 19.0 para el análisis de datos. Resultados: Se evaluaron 119 pacientes, 52,1% mujeres y 47,9% hombres. El diagnóstico más común fue Linfoma no Hodgkin en el 43,7%. De acuerdo a la EGS-GP el 50,4% de los pacientes presentaba algún grado de desnutrición o estaba en riesgo de padecerla de los cuales: el 31,1% tenía desnutrición moderada y el 19,3% presentaba desnutrición severa. El 49,6% de los pacientes presentaba un adecuado estado nutricio. Del 30,3% de los pacientes que fallecieron el 37% tenía desnutrición severa y el 50% disminución severa de la concentración de albúmina. Conclusiones: La prevalencia de desnutrición en los pacientes hematológicos atendidos en el Instituto Nacional de Cancerología de México que aún no reciben tratamiento médico fue elevada. Existe una asociación entre el Estado Nutricio y la mortalidad de éste grupo de pacientes.

O interesse crescente no uso de argilas para a produção de cerâmica no Rio Grande do Norte requer a caracterização técnica das matérias primas. Este trabalho mostra algumas propriedades de cinco argilas encontradas nesta região, tais como coloração após queima a 950 ºC, 1250 ºC e 1450 ºC, retração linear e resistência à flexão. A queima de argilas regionais resultaram em uma variedade de faixas de tonalidades do branco ao creme. As propriedades gerais dos produtos da queima são melhores que as reportadas na literatura, demonstrando o potencial tecnológico das argilas da região estudada.

The growing interest in the use of clay minerals for the production of whiteware in Rio Grande do Norte demands the technological characterization of local raw materials. The present study reports some properties of five different clay minerals found in the region, such as tone upon firing at 950 ºC, 1250 ºC and 1450 ºC, linear shrinkage and flexural strength. Firing regional clays resulted in a variety of ranging from white to cream. The overall properties of the resulting products exceeded literature values, showing the technological potential of the regional clays investigated herein.

The authors study pollenmorphologicaly species of the present families that occur like trees in the South Brazilian forests, except Heimia myrtifolia, which is herbaceous. One group is formed, remarked by three simple colpori, which consists of the species Buchenavia kleinii, Laguncularia racemosa (Combretaceae), Heimia myrtifolia *Lythraceae) and Rhizophora mangle (Rhizophoraceae). An other group is represented by the pollen grains of Combretum fruticosum, Terminalia autralis (Combretaceae) and Lafoensia pacari (Lythraceae), because they present pseudocolpi or similar streaks of a thinner sexine. Daphnopsis (Thymelaeaceae) is pantoporate with 10 - 14 pori and possesses a superficial pattern like croton-type of the Euphorbiaceae. Cariniana estrellensis (Lecythidaceae), with only three colpi, takes also an isolated position. There are relations between the morphology of pollen grains of the above treated families and those from the Guttiferales and Rosales.

Es wurden pollenmorphologisch diejenigen Arten der vorliegenden Familien untersucht, welche als Baeume in den suedbrasilianischen Waeldern auftreten, mit Ausnahme der krautigen Heimia myrtifolia. Gekennzeichnet durch drei einfache Colpori laesst sich die Gruppe von Buchenavia kleinii, Laguncularia racemosa (Combretaceae), Heimia myrtifolia (Lythraceae) und Rhizophora mangle (Rhizophoraceae) bilden. Wegen ihrer Pseudocolpi oder aehnlichen Laengsstreifen einer duenneren Sexine stellen die Pollenkoerner von Combretum futicosum, Terminalia autralis (Combretaceae) und Lafoensia pacari (Lythraceae) eine andere Gruppe dar. Daphnopsis (Thymelaeaceae) besitzt 10 - 14 gleichmaessing verteilte Poren und eine Oerflaechenstruktur die der des Croton-Types der Euphorbiaceen sehr nahe kommt. Cariniana estrellensis (Lecythidaceae), mit nur drei Colpi, nimmt auch eine gesonderte Position ein. Es bestehen Beziehungen zwischen der Morphologie der Pollenkoerner der oben bearbeiteten Familien und jenen der Guttiferales und Rosales.

In Fortsentzung des Kataloges der suedbrasilianischen Baumpollen untersuchten wir die Familien Cunoniaceae, Rosaceae und Connaraceae. Die erste besitzt sehr kleine Pollenkoerner, mit zwei (Lamanonia speciosa) oder drei colpori und netzartigen Ober-flaechen. Die Rosaceen haben groessere Koerner mit drei colpori und such, ausser Licania sp., feinere netzartige und gerillte Sexine. Die Connaraceen, mit drei colpori, haben ein etwas grossmaschigeres reticulum. Groessere Aehnlichkeiten wurden festgestellt zwischen den Pollenkoernern der Connaraceae und den der Dilleniaceae und Marcgraviaceae. Mit sicherheit konnten wir keine phylogenetische Reihenfolge der Pollenkoerner der drei bearbeiteten Familien aufstellen.