Poliartritis y leishmaniosis canina: Patogenia de la alteración articular : caso clínico

Uno de los signos clínicos a menudo observados en los perros con leishmaniosis es la presencia de cojeras, asociadas en muchos casos a poliartritis. la patogenia de estas alteraciones articulares no está del todo clara. Si bien la presencia del parásito en la articulación explicaría en muchos casos la alteración observada, debe tenerse también en cuenta el efecto patógeno que puede tener lugar a través del depósito de inmunocomplejos circulantes (ICC), que son frecuentes en esta enfermedad. En el presente artículo revisamos la bibliografía y comparamos nuestro caso con otros publicados, discutiendo sobre el posible origen de estas artropatías.Lameness, often associated with polyarthritis, is one of the most frequent clinical signs observed in dogs with leishmaniasis.The pathogenesis of these joint disturbances is not well known.Even the presence of the parasite in the joint sometimes may explain the observed alteration, the pathogenic effect triggered by the deposition of circulating immunocomplexes (CIC) that are afien produced in dogs with Cl, should also be considered.The present paper reviews the literature and compares our clinical case with others reported, thus, discussing the possible aetiology of these arthropathies

Harmonically Trapped Quantum Gases

We solve the problem of a Bose or Fermi gas in $d$-dimensions trapped by $\delta \leq d$ mutually perpendicular harmonic oscillator potentials. From the grand potential we derive their thermodynamic functions (internal energy, specific heat, etc.) as well as a generalized density of states. The Bose gas exhibits Bose-Einstein condensation at a nonzero critical temperature $T_{c}$ if and only if $d+\delta >2$, and a jump in the specific heat at $T_{c}$ if and only if $d+\delta >4$. Specific heats for both gas types precisely coincide as functions of temperature when $d+\delta =2$. The trapped system behaves like an ideal free quantum gas in $d+\delta$ dimensions. For $\delta =0$ we recover all known thermodynamic properties of ideal quantum gases in $d$ dimensions, while in 3D for $\delta =$ 1, 2 and 3 one simulates behavior reminiscent of quantum {\it wells, wires}and{\it dots}, respectively.Comment: 14 pages including 3 figures and 3 table

Uso de imagens de radar na estimativa da temperatura do ar.

O trabalho propõe um método para a estimativa da temperatura do ar baseado em um MDE construído a partir de dados do radar SRTM. Segundo os autores a estimativa de temperaturas medidas mensais e anuais do ar a partir de coordenadas geográficas e altitude foi pesquisada por diversos autores. Apesar do grande número de trabalhos, muitos estados brasileiros carecem de informações climatológicas de temperatura do ar, que poderiam ser geradas a partir de equações de estimativas associadas a modelos digitais de elevação (MDE)

Nueva especie de lagarto del género <i>Liolaemus</i> (Reptilia: liolaemidae) del norte de Chile, previamente confundido con <i>Liolaemus (=phrynosaura) reichei</i>

Se describe una nueva especie de lagarto para el norte de Chile, la que es asignada al grupo montanus del género Liolaemus. La nueva especie difiere de las especies del subgrupo boulengeri en que carece de un parche de escamas alargadas en la parte femoral de la extremidad posterior. Difiere de las demás especies del grupo montanus en su tamaño mediano, algunas escamas dorsales muy suavemente carenadas, casi lisas, redondeadas, suavemente imbricadas. Presenta dimorfismo sexual, se encuentra sobre los 1000 m de altura y su hábitat corresponde a hiperdesierto o desierto interior.We describe a new species of lizards from the north of Chile and are belonging to the montanus group of the Liolaemus genus. The new species differs from the boulengeri group in lacking a patch of enlarged scales on the posterior thigh. It differs from the remaining species of the montanus group by its moderate size, some dorsal scales with slight keels, smooth, and rounded dorsal body scale and mildly imbricate. It has a sexual dimorphims, it occurs over 1000 m of elevation and their habitat corresponds to the hiperdesert or interior desert.Asociación Herpetológica Argentina (AHA

Carbon stocks and plant species diversity in secondary forests along the Transamazon highway.

Land use planning should consider the value of maintaining secondary forests for biodiversity conservation and carbon sequestration. In this study, we evaluated the biomass stocks and plant species diversity of secondary forests in ten small holdings along the Transamazon highway. The local peasants have been encouraged by the Government program Proambiente and other initiatives to preserve forest environmental services while planning land use/management practices in their properties. Each area was georeferenced and land cover was classified based on Landsat TM images. Land use histories were obtained from interviews with the farmers. We studied eleven secondary forest patches varying from 5 to 25 years since abandonment from agriculture. Each patch had three replicate plots. Three nested plots were established for each one of the 33 sampled areas - 10 x 10m (for trees), 3 x 3m (for saplings), and 1 x 1m (for herbs and seedlings). Aboveground biomass was estimated by: 1) general or species-specific models for the stems measured in diameter and height; 2) weigh of the dry mass for litter, herbs and small woody plants. Soil samples were collected at 0-30cm depth for biomass estimation. All plants, including trees, shrubs, vines and herbs were identified. Aboveground biomass varied from 22 to 247 Mg ha-1. Trees have contributed with 25-97% of the aboveground biomass. Saplings, herbs/seedlings and litter have contributed together with 2.6-75%. Soil biomass varied from 47 to 132 Mg ha-1. A total of 125 plant species were found. The most abundant woody species were Cecropia palmata, Guazuma ulmifolia, Banara guianensis, Apeiba echinata and Zanthoxylum rhoifolia. Total species richness varied from 4 to 12 per 100m2 at forests 10 years old. Simpson?s diversity index for forests > 10 years old varied from 0.18-0.75 against 0.75-1.00 for older forests

Nueva especie de lagarto del género <i>Liolaemus</i> (Reptilia: liolaemidae) del norte de Chile, previamente confundido con <i>Liolaemus (=phrynosaura) reichei</i>

Se describe una nueva especie de lagarto para el norte de Chile, la que es asignada al grupo montanus del género Liolaemus. La nueva especie difiere de las especies del subgrupo boulengeri en que carece de un parche de escamas alargadas en la parte femoral de la extremidad posterior. Difiere de las demás especies del grupo montanus en su tamaño mediano, algunas escamas dorsales muy suavemente carenadas, casi lisas, redondeadas, suavemente imbricadas. Presenta dimorfismo sexual, se encuentra sobre los 1000 m de altura y su hábitat corresponde a hiperdesierto o desierto interior.We describe a new species of lizards from the north of Chile and are belonging to the montanus group of the Liolaemus genus. The new species differs from the boulengeri group in lacking a patch of enlarged scales on the posterior thigh. It differs from the remaining species of the montanus group by its moderate size, some dorsal scales with slight keels, smooth, and rounded dorsal body scale and mildly imbricate. It has a sexual dimorphims, it occurs over 1000 m of elevation and their habitat corresponds to the hiperdesert or interior desert.Asociación Herpetológica Argentina (AHA

Comparação dos modelos digitais de elevação gerados com dados SRTM e cartas IBGE na escala 1:250.000 na região da Bacia do Camanducaia no Estado de São Paulo.

O estudo comparou os MDEs, os mapas de declividade e os mapas hipsométricos produzidos pela SRTM com aqueles gerados pelas cartas do IBGE. A área estudada integra a bacia do Camanducaia, que limita-se como Estado de São Paulo a leste e Jaguariúna a oeste, abrangendo Holambra, Jaguariúna, Santo Antônio de Posse, Pedreira, Amparo, Serra Negra, Monte Alegre do Sul, Socorro, Pinhalzinho e Pedra Bela

Ochthebius (Calobius) quadricollis Mulsant, 1844 en la costa atlántica del noroeste de España (Coleoptera, Hydraenidae)

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Aportaciones al conocimiento faunístico de los géneros Limnebius Leach, 1815 y Ochthebius Leach, 1815 en la Península Ibérica (Coleoptera, Hydraenidae)

New records on the distributional range of 3 species of the genus Limnebius Leach and 9 species of Ochthebius Leach belonging to the subgenera Asiobates Thomson and Ochthebius Leach in the Iberian Peninsula are given. Three new records are specially relevant to the knowledge of the Iberian hydraenid fauna: Ochthebius (Asiobates) bicolon Germar, 1824, collected in the provinces of Soria and Cuenca, which represent the first confirmed records for this species in Spain, Ochthebius (Asiobates) figueroi Garrido, 1990 reported for Cuenca and, finally, the confirmation of the presence in the Iberian Peninsula of Ochthebius (Ochthebius) pusillus Stephens, 1835.Se amplía el conocimiento del área de distribución de 3 especies de Limnebius Leach y 9 especies de Ochthebius Leach de los subgéneros Asiobates Thomson y Ochthebius Leach en la Península Ibérica. Entre estas citas destacan las capturas en las provincias de Cuenca y Soria de Ochthebius (Asiobates) bicolon Germar, 1824 que suponen el primer registro ibérico de la especie y de Ochthebius (Asiobates) figueroi Garrido, 1990 en la provincia de Cuenca. Igualmente se confirma la presencia en la Península Ibérica de Ochthebius (Ochthebius) pusillus Stephens, 1835