Multiple primary digital apocrine sweat gland carcinosarcoma in a cat     

Herráez P  Rodríguez F  Ramírez G  Aguirre-Sanceledonio M  Castro A  Espinosa de Los Monteros A 《The Veterinary record》2005,157(12):356-358

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Integrating Fire Risk Considerations in Forest Management Planning in Spain – A Landscape Level Perspective     

José?Ramón?GonzálezEmail author  Marc?Palahí  Timo?Pukkala 《Landscape Ecology》2005,20(8):957-970

It is reasonable to assume that there is a relationship between the spatial distribution of forest fuels and fire hazards. Therefore, if fire risk is to be included into numerical forest planning, the spatial distribution of risky and non-risky forest stands should be taken into account. The present study combines a stand-level fire risk model and landscape level optimization to solve forest planning problems in which the fire risk plays an important role. The key point of the method was to calculate forest level fire resistance metrics from stand level indices and use these metrics as objective variables in numerical optimization. This study shows that maximizing different landscape metrics produces very different landscape configurations with respect to the spatial arrangement of resistant and risky stands. The landscapes obtained by maximizing different metrics were tested with a fire spread simulator. These tests suggested that the mean fire resistance of the landscape, which is a non-spatial metric, is the most important factor affecting the burned area. However, spatial landscape metrics that decrease the continuity of fire resistance in the landscape can significantly improve the fire resistance of the landscape when used as additional objective variables.  相似文献   

Anatomy of the cranioencephalic structures of the camel (Camelus dromedarius L.) by imaging techniques: a magnetic resonance imaging study     

Arencibia A  Rivero MA  Gil F  Ramírez JA  Corbera JA  Ramírez G  Vázquez JM 《Anatomia, histologia, embryologia》2005,34(1):52-55

The objective of this study was to define the anatomy of the cranioencephalic structures and associated formations in camel using magnetic resonance imaging (MRI). MR images were acquired in sagittal, transverse and oblique dorsal planes, using spin-echo techniques, a magnet of 1.5 T and a standard human body coil. MR images were compared with corresponding frozen cross-sections of the head. Different anatomic structures were identified and labelled at each level. The resulting images provided excellent soft tissue contrast and anatomic detail of the brain and associated structures of the camel head. Annotated MR images from this study are intended to be a reference for clinical imaging studies of the head of the dromedary camel.  相似文献   

Histological basis of the porcine femoral artery for vascular research     

Solanes N  Rigol M  Ramírez J  Segalés J  Roqué M  Marimon JM  Pérez-Villa F  Roig E  Sanz G  Heras M 《Anatomia, histologia, embryologia》2005,34(2):105-111

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Surfactant protein D expression in normal and pneumonic ovine lung     

Grubor B  Gallup JM  Ramírez-Romero R  Bailey TB  Crouch EC  Brogden KA  Ackermann MR 《Veterinary immunology and immunopathology》2004,101(3-4):235-242

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Comment on "Evidence for positive epistasis in HIV-1"     

Wang K  Mittler JE  Samudrala R 《Science (New York, N.Y.)》2006,312(5775):848; author reply 848

Bonhoeffer et al. (Reports, 26 November 2004, p. 1547) presented evidence for positive epistasis in a clinical data set of HIV-1 mutants and corresponding fitness values. We demonstrate that biases in the original and simulated data sets may lead to erroneous evidence for epistasis. More rigorous statistical tests must be used to account for such biases before one can infer epistasis.  相似文献   

Save the lab in Montemar, Chile     

Borges R  Viveros OH  Latorre R 《Science (New York, N.Y.)》2006,311(5769):1866

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Correlation of magnetic resonance images with anatomic features of the equine tarsus     

Latorre R  Arencibia A  Gil F  Rivero M  Henry RW  Ramírez G  Váquez JM 《American journal of veterinary research》2006,67(5):756-761

OBJECTIVE: To correlate anatomic features of the equine tarsus identified in plastinated sections with images obtained via magnetic resonance imaging (MRI). ANIMALS: 4 horses. PROCEDURE: MRI (1.5-Tesla magnet) of the tarsus was performed on the pelvic limbs of 4 clinically normal horses following euthanasia. After imaging, tarsocrural joint spaces and vasculature were injected with colored latex. Sagittal and transverse sections of the tarsi were plastinated to facilitate interpretation of MR images. RESULTS: Relevant anatomic structures were identified and labeled on the plastinated tissue slices and corresponding MR images. Results indicated high correlations between MRI findings and those of plastinated sections. CONCLUSIONS AND CLINICAL RELEVANCE: The data obtained provided certain reference standards for normal anatomic structure sizes and positions in the equine tarsus. This information may aid future physiologic or clinical studies of this joint.  相似文献   

Influence of Eco-friendly Manures on Leaf Biomass Production of a Traditional Medicinal Plant Adhatoda vasica Nees under Upper Brahmaputra Valley Agroclimatic Zone     

Sristisri Upadhyay  Lakhi Ram  Saikia 《农业科学与技术》2012,(1):115-119

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Perspectives in dryland restoration: approaches for climate change adaptation     

V. Ramón Vallejo  Athanasios Smanis  Esteban Chirino  David Fuentes  Alejandro Valdecantos  Alberto Vilagrosa 《New Forests》2012,43(5-6):561-579

Reforestation efforts in dryland ecosystems frequently encounter drought and limited soil productivity, although both factors usually interact synergistically to worsen water stress for outplanted seedlings. Land degradation in drylands (e.g. desertification) usually reduces soil productivity and, especially, soil water availability. In dry sub-humid regions, forest fires constitute a major disturbance affecting ecosystem dynamics and reforestation planning. Climate change projections indicate an increase of drought and more severe fire regime in many dryland regions of the world. In this context, the main target of plantation technology development is to overcome transplant shock and likely adverse periods, and in drylands this is mostly related to water limitations. In this paper, we discuss some selected steps that we consider critical for improving success in outplanting woody plants, both under current and projected climate change conditions including: (1) Plant species selection, (2) Improved nursery techniques, and (3) Improved planting techniques. The number of plant species used in reforestation is increasing rapidly, moving from a reduced set of well-known, easy-to-grow, widely used species, to a large variety of promising native species. Available technologies allow for reintroducing native plants and recovering critical ecosystem functions for many degraded drylands. However, climate change projections introduce large uncertainties about the sustainability of current reforestation practices. To cope with these uncertainties, adaptive restoration approaches are suggested, on the basis of improved plant quality, improved techniques for optimizing rain use efficiency in plantations, and exploring native plant species, including provenances and genotypes, for their resilience to fire and water use efficiency.  相似文献