952 resultados para Beattie, James Hay, 1768-1790.


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Page 302 incorrectly numbered 202.

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Bound with the author's The Minstrel. London, 1806.

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"Memoir of Beattie, by the Rev. Alexander Dyce": p. [vii]-lxxvi.

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"Appendix. Notes and illustrations": v.2 [329]-403.

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Purchased from Gilman, Crompond, N. Y.

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Added t.p., engraved.

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Estudio sobre la cuestión femenina en la literatura de Henry James. En varias de las novelas de James aparece un personaje, casi siempre una figura femenina que atrae nuestra atención, nos fascina y nos hace participar en su trayectoria vital, tomando partido ante sus actitudes o sus errores y dejándonos defraudados o entristecidos ante el final de una historia, que puede ser dramático o ser un final sin respuesta. Se analizan a continuación algunos de los rasgos de tres heroínas de James: lsabel, de The portrait of a Lady, del año 1881; Verena, de The Bostoniano, de 1886; y Milly, de The wings of the dove, del año 1902. Se destaca la fuerza de sus respectivas personalidades y el hecho de que James las situase en un contexto absolutamente cerrado y alejado de los acontecimientos políticos. En James hay poca acción, pero hay una deliberada descripción de rasgos y tipos americanos. Sin embargo, sus personajes masculinos son menos convincentes y con frecuencia menos atractivos. Pero las protagonistas de James, por una razón u otra, no pueden elegir un destino de libertad y de plenitud de vida. Muy raramente aparece la pasión y casi nunca el amor físico. Todo sucede en el cerebro y en el corazón de los personajes.

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"Complete in one volume."

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Mode of access: Internet.

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"Complete in one volume."

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In this paper we present research adapting a state of the art condition-invariant robotic place recognition algorithm to the role of automated inter- and intra-image alignment of sensor observations of environmental and skin change over time. The approach involves inverting the typical criteria placed upon navigation algorithms in robotics; we exploit rather than attempt to fix the limited camera viewpoint invariance of such algorithms, showing that approximate viewpoint repetition is realistic in a wide range of environments and medical applications. We demonstrate the algorithms automatically aligning challenging visual data from a range of real-world applications: ecological monitoring of environmental change, aerial observation of natural disasters including flooding, tsunamis and bushfires and tracking wound recovery and sun damage over time and present a prototype active guidance system for enforcing viewpoint repetition. We hope to provide an interesting case study for how traditional research criteria in robotics can be inverted to provide useful outcomes in applied situations.

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Raman microscopy, based upon the inelastic scattering (Raman) of light by molecular species, has been applied as a specific structural probe in a wide range of biomedical samples. The purpose of the present investigation was to assess the potential of the technique for spectral characterization of the porcine outer retina derived from the area centralis, which contains the highest proportion of cone:rod cell ratio in the pig retina. METHODS: Retinal cross-sections, immersion-fixed in 4% (w/v) PFA and cryoprotected, were placed on salinized slides and air-dried prior to direct Raman microscopic analysis at three excitation wavelengths, 785 nm, 633 nm, and 514 nm. RESULTS: Raman spectra of each of the photoreceptor inner and outer segments (PIS, POS) and of the outer nuclear layer (ONL) of the retina acquired at 785 nm were dominated by vibrational features characteristic of proteins and lipids. There was a clear difference between the inner and outer domains in the spectroscopic regions, amide I and III, known to be sensitive to protein conformation. The spectra recorded with 633 nm excitation mirrored those observed at 785 nm excitation for the amide I region, but with an additional pattern of bands in the spectra of the PIS region, attributed to cytochrome c. The same features were even more enhanced in spectra recorded with 514 nm excitation. A significant nucleotide contribution was observed in the spectra recorded for the ONL at all three excitation wavelengths. A Raman map was constructed of the major spectral components found in the retinal outer segments, as predicted by principal component analysis of the data acquired using 633 nm excitation. Comparison of the Raman map with its histological counterpart revealed a strong correlation between the two images. CONCLUSIONS: It has been demonstrated that Raman spectroscopy offers a unique insight into the biochemical composition of the light-sensing cells of the retina following the application of standard histological protocols. The present study points to the considerable promise of Raman microscopy as a component-specific probe of retinal tissue.

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Abstract The aim was twofold; to demonstrate the ability of temperature-controlled Raman microscopy (TRM) to locate mannitol within a frozen system and determine its form; to investigate the annealing behavior of mannitol solutions at -30 °C. The different polymorphic forms of anhydrous mannitol as well as the hemihydrate and amorphous form were prepared and characterized using crystal or powder X-ray diffractometry (XRD) as appropriate and Raman microscopy. Mannitol solutions (3% w/v) were cooled before annealing at -30 °C. TRM was used to map the frozen systems during annealing and was able to differentiate between the different forms of mannitol and revealed the location of both ß and d polymorphic forms within the structure of the frozen material for the first time. TRM also confirmed that the crystalline mannitol is preferentially deposited at the edge of the frozen drop, forming a rim that thickens upon annealing. While there is no preference for one form initially, the study has revealed that the mannitol preferentially transforms to the ß form with time. TRM has enabled observation of spatially resolved behavior of mannitol during the annealing process for the first time. The technique has clear potential for studying other crystallization processes, with particular advantage for frozen systems.