LATHROBIUM (LATHROBIUM) NEGREI JARRIGE, 1952, NUEVA ESPECIE PARA LA FAUNA DE LA PENÍNSULA IBÉRICA (COLEOPTERA, STAPHYLINIDAE, PAEDERINAE)

The species Lathrobium (Lathrobium) negrei is recorded for the first time in the Iberian peninsula, Mar de Ontigola, Aranjuez, province of Madrid. Diagnostic characteristics, its aedeagus and the groove from near margin of sternite pygidial are furnished. New data on the geographical distribution are provided. It is an element “betico-rifeño” considered as riparium of salty soils.Lathrobium (Lathrobium) negrei Jarrige, 1952 es recogida por primera vez en la Península Ibérica en el “Mar de Ontigola”, Aranjuez, provincia de Madrid. Se detallan y se representan las caracteristicas morfológicas del edeago y de la escotadura del esternito pigidial del macho. Se amplia el conocimiento sobre la distribución geográfica de la especie, considerándola como elemento betico-rifeño. Se señalan sus preferencias ecológicas, como ripícola de aguas salobres

Stem cells labeled with superparamagnetic iron oxide nanoparticles in a preclinical model of cerebral ischemia: a systematic review with meta-analysis

Introduction: Although there is an increase in clinical trials assessing the efficacy of cell therapy in structural and functional regeneration after stroke, there are not enough data in the literature describing the best cell type to be used, the best route, and also the best nanoparticle to analyze these stem cells in vivo. This review analyzed published data on superparamagnetic iron oxide nanoparticle (SPION)-labeled stem cells used for ischemic stroke therapy.Method: We performed a systematic review and meta-analysis of data from experiments testing the efficacy of cellular treatment with SPION versus no treatment to improve behavioral or modified neural scale outcomes in animal models of stroke by the Cochrane Collaboration and indexed in EMBASE, PubMed, and Web of Science since 2000. To test the impact of study quality and design characteristics, we used random-effects meta-regression. in addition, trim and fill were used to assess publication bias.Results: the search retrieved 258 articles. After application of the inclusion criteria, 24 reports published between January 2000 and October 2014 were selected. These 24 articles were analyzed for nanoparticle characteristics, stem cell types, and efficacy in animal models.Conclusion: This study highlights the therapeutic role of stem cells in stroke and emphasizes nanotechnology as an important tool for monitoring stem cell migration to the affected neurological locus.Instituto Israelita de Ensino e Pesquisa Albert EinsteinCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)FAPEGHosp Israelita Albert Einstein, BR-05651901 São Paulo, BrazilUniversidade Federal de São Paulo, BR-04021001 São Paulo, SP, BrazilSanta Casa Misericordia São Paulo, BR-01221020 São Paulo, SP, BrazilUniv São Paulo, Inst Matemat & Estat, BR-05508090 São Paulo, SP, BrazilUniv São Paulo, LIM44, BR-05403000 São Paulo, SP, BrazilUniversidade Federal de São Paulo, BR-04021001 São Paulo, SP, BrazilWeb of Scienc

Catálogo de la familia Orchidaceae en Guinea Ecuatorial

The current state of knowledge on Orchidaceae in Equatorial Guinea is provided, based on herbarium collections and bibliographic revision. Orchidaceae are represented in Equatorial Guinea (Annobon, Bioko and Rio Muni) by 225 taxa, and 12 more requiring confirmation, belonging to 43 genera and 10 tribes of the subfamilies Vanilloideae, Orchidoideae and Epidendroideae. Eighty eight taxa have been added for Rio Muni to the previous checklists. The tribe Vandeae is the best represented with 118 taxa. Analysing the habit, 53 taxa are terrestrial, 6 scandent and 166 are epiphytes. The island of Bioko and the western provinces of Rio Muni show the major diversity in orchids. Thirty one species have been described from materials collected in Equatorial Guinea, six of which are considered endemics.Se presenta un catálogo actualizado de las especies y táxones infraespecíficos de la familia Orchidaceae en Guinea Ecuatorial, obtenido a partir de testimonios de herbario y revisión bibliográfica. Nuestros resultados indican la presencia de 225 táxones más 12 que requieren confirmación en el conjunto del territorio (Annobón, Bioko y Río Muni), incluidos en 43 géneros y 10 tribus pertenecientes a las subfamilias Vanilloideae, Orchidoideae y Epidendroideae. Se aportan 88 táxones más en el catálogo de Río Muni respecto a publicaciones precedentes. La tribu Vandeae es la más representada, con 118 táxones. Atendiendo al hábito, 53 táxones son terrestres, seis son trepadores y 166 son epífitos. La mayor riqueza de orquídeas se manifiesta en la isla de Bioko y en las provincias occidentales de Río Muni. De las 31 especies descritas sobre materiales ecuatoguineanos, seis son consideradas endemismos de Guinea Ecuatorial

Cross-correlation based high resolution electron backscatter diffraction and electron channelling contrast imaging for strain mapping and dislocation distributions in InAlN thin films

We describe the development of cross-correlation based high resolution electron backscatter diffraction (HR-EBSD) and electron channelling contrast imaging (ECCI), in the scanning electron microscope (SEM), to quantitatively map the strain variation and lattice rotation and determine the density and identify dislocations in nitride semiconductor thin films. These techniques can provide quantitative, rapid, non-destructive analysis of the structural properties of materials with a spatial resolution of order of tens of nanometers. HR-EBSD has a sensitivity to changes of strain and rotation of the order of 10−4 and 0.01° respectively, while ECCI can be used to image single dislocations up to a dislocation density of order 1010 cm−2. In the present work, we report the application of the cross-correlation based HR-EBSD approach to determine the tilt, twist, elastic strain and the distribution and type of threading dislocations in InAlN/AlN/GaN high electron mobility transistor (HEMT) structures grown on two different substrates, namely SiC and sapphire. We describe our procedure to estimate the distribution of geometrically necessary dislocations (GND) based on Nye-Kroner analysis and compare them with the direct imaging of threading dislocations (TDs) by ECCI. Combining data from HR-EBSD and ECCI observations allowed the densities of pure edge, mixed and pure screw threading dislocations to be fully separated

Evaluation of Thermal Versus Plasma-Assisted ALD Al2O3 as Passivation for InAlN/AlN/GaN HEMTs

Al2O3 films deposited by thermal and plasma-assisted atomic layer deposition (ALD) were evaluated as passivation layers for InAlN/AlN/GaN HEMTs. As a reference, a comparison was made with the more conventional plasma enhanced chemical vapor deposition deposited SiNx passivation. The difference in sheet charge density, threshold voltage, f(T) and f(max) was moderate for the three samples. The gate leakage current differed by several orders of magnitude, in favor of Al2O3 passivation, regardless of the deposition method. Severe current slump was measured for the HEMT passivated by thermal ALD, whereas near-dispersion free operation was observed for the HEMT passivated by plasma-assisted ALD. This had a direct impact on the microwave output power. Large-signal measurements at 3 GHz revealed that HEMTs with Al2O3 passivation exhibited 77% higher output power using plasma-assisted ALD compared with thermal ALD

ILCYM - Insect Life Cycle Modeling. A software package for developing temperature-based insect phenology models with applications for local, regional and global analysis of insect population and mapping

This book describes the application of ILCYM software, which supports the development of process-oriented temperature-driven and age-stage structured insect phenology/population models. ILCYM interactively leads the user through the steps for developing insect phenology models, for conducting simulations, and for producing potential population distribution and risk mapping under current or future temperature (climate change) scenarios. The objective of the present document is to explain how the developed modeling approach works; what type of data need to be generated to develop an insect phenology model, what type of data need to be generated to validate a, how are implemented, and what type of insect population analysis will be provided. With the current version of ILCYM the authors intend to share the knowledge gained in insect pest population modeling research at the Agroecology/IPM unit at CIP and provide an open-source computer aided tool, especially for researcher in developing countries, that facilitates the development of own using advanced modeling techniques without being experts in the field

DISTRIBUCION Y ABUNDANCIA DE ESPECIES DE PLANTAS EN EL GRADIENTE HÍDRICO DE LA ZONA PALUSTRE DEL HUMEDAL “LAGUNA LOS MILAGROS”

El estudio se realizó en la zona palustre del humedal “Laguna Los Milagros”, Leoncio Prado, Huánuco -Perú; con la finalidad de determinar la distribución y abundancia de especies de plantas en relación algradiente hídrico en la estación lluviosa y en la estación seca. El área mínima de muestreo fue de 8 m2 y seutilizó el método sistemático para la ubicación de las unidades muestrales y la línea de Canfield a lo largo delgradiente hídrico. Los datos de cobertura, profundidad del agua y la humedad del suelo fueron evaluadosmediante el análisis de regresión y el análisis clúster (UPGMA).La distribución, composición y abundancia de especies de plantas varían en relación al gradiente hídrico. Lastendencias en la abundancia y las asociaciones de las especies a lo largo de este gradiente a distintas escalasespaciales muestran diferencias significativas, por lo que se presentan tres tipos de asociaciones de especies ypor lo tanto, tres tipos de hábitats. Aciotis polystachya, Andropogon bicornis, Canavalia eurycarpa,Lycopodium cernum, Pseudelephantopus spicatus y Cissus sp se distribuyen en hábitats no inundados;Cabomba furcata, Eleocharis elegans, Hymenachne amplexicaulis, Scoparia dulcis, Isachne polygonoides,Xyris laxifolia, Tonina fluviatilis, Scleria microcarpa y Ludwigia affinis se distribuyen en hábitats inundadosy; Aeschynomene sensitiva, Calopogonium mucunoides, Cyperus difformis, Desmoscelis villosa, Homolepisaturensis, Sauvagesia erecta, Chloris radiata, Psidium acutangulum y Selaginella mertensi en hábitatstransicionales.Palabras claves: Distribución, gradiente hídrico, zona palustre, humedal