Distribution of Bird Habitats Using UCD-image Analysis : the Case of the Shinshu University Campus Research Forest

The habitat of forest bird species depends on forest type. We analyzed the distribution of birds inhabiting the Shinshu University Agriculture Faculty’s campus research forest. A bird observation database and image classification were used to complete the analysis. Birds were most frequently observed in broad-leaved forest areas of the campus forest, but this differed slightly among species. Thus, our results showed differences between species.Article信州大学農学部紀要. 46(1-2): 113-118 (2010)departmental bulletin pape

Evaluación del condensado de gas natural (CGN) como solvente de parafinas para crudo liviano Talara

La presente investigación está referida a los problemas que causan la presencia de parafinas en crudos en la producción de hidrocarburos debido a que su deposición en las paredes de las tuberías reduce el diámetro, restringe el flujo, y su precipitación, modifica el comportamiento reológico del crudo lo cual conlleva a gastos adicionales en la operación. El uso de sustancias químicas ha sido una de las maneras más efectivas de controlar los depósitos de parafina. Los tratamientos químicos conformados por solventes restauran la capacidad de disolver los cristales de ceras parafínicas causados por la precipitación por disminución de temperatura o pérdida de compuestos gaseosos y aumentan la capacidad de disolución entre aditivos. La finalidad de este proyecto es la de evaluar a nivel laboratorio el performance del Condensado de Gas Natural (CGN) como solvente de parafinas en los pozos con elevado Pour Point del Lote III comparándolo con el solvente de parafinas TEQ-7000. El Condensado de Gas Natural (CGN) es un subproducto de la planta de Gas Natural de la empresa GRAÑA Y MONTERO PETROLERA cuya Gravedad API aproximada es de 86.2°API@60 °F. Los métodos utilizados en este proyecto fueron la Prueba de la Mancha, mediante el cual es posible determinar cualitativamente la estabilidad de los asfaltenos en el crudo en presencia del Condensado de Gas Natural (CGN), y la Prueba de Rolled o de Solvencia, a través de la cual se puede valorar el performance del solvente sobre muestras sólidas de parafina midiendo el tiempo que demora en actuar (tiempo de acción), y el tiempo que demora en disolverla por completo (tiempo de solvencia). Se evidenció que el Condensado de Gas Natural obtuvo mejor performance en la prueba de Solvencia, sin embargo su adición promueve la precipitación de asfaltenos

Near-field surface plasmon field enhancement induced by rippled surfaces

The occurrence of plasmon resonances on metallic nanometer-scale structures is an intrinsically nanoscale phenomenon, given that the two resonance conditions (i.e., negative dielectric permittivity and large free-space wavelength in comparison with system dimensions) are realized at the same time on the nanoscale. Resonances on surface metallic nanostructures are often experimentally found by probing the structures under investigation with radiation of various frequencies following a trial-and-error method. A general technique for the tuning of these resonances is highly desirable. In this paper we address the issue of the role of local surface patterns in the tuning of these resonances as a function of wavelength and electric field polarization. The effect of nanoscale roughness on the surface plasmon polaritons of randomly patterned gold films is numerically investigated. The field enhancement and relation to specific roughness patterns is analyzed, producing many different realizations of rippled surfaces. We demonstrate that irregular patterns act as metal–dielectric–metal local nanogaps (cavities) for the resonant plasmonic field. In turn, the numerical results are compared to experimental data obtained via aperture scanning near-field optical microscopy

The spotted gar genome illuminates vertebrate evolution and facilitates human-teleost comparisons

To connect human biology to fish biomedical models, we sequenced the genome of spotted gar (Lepisosteus oculatus), whose lineage diverged from teleosts before teleost genome duplication (TGD). The slowly evolving gar genome has conserved in content and size many entire chromosomes from bony vertebrate ancestors. Gar bridges teleosts to tetrapods by illuminating the evolution of immunity, mineralization and development (mediated, for example, by Hox, ParaHox and microRNA genes). Numerous conserved noncoding elements (CNEs; often cis regulatory) undetectable in direct human-teleost comparisons become apparent using gar: functional studies uncovered conserved roles for such cryptic CNEs, facilitating annotation of sequences identified in human genome-wide association studies. Transcriptomic analyses showed that the sums of expression domains and expression levels for duplicated teleost genes often approximate the patterns and levels of expression for gar genes, consistent with subfunctionalization. The gar genome provides a resource for understanding evolution after genome duplication, the origin of vertebrate genomes and the function of human regulatory sequences

A multi-standard 2G/3G/4G Cellular modem supporting carrier aggregation in 28nm CMOS

Mobile networks today are divided into multiple radio access technologies (RATs) scattered over a variety of frequencies and functionality depending on the network region. The scattered networks require that the digital baseband for mobile user equipment handle multiple RATs, multiple bands, as well as seamlessly transition between these. In 3GPP release 10 [1] the problem with scattered frequency bands has been addressed by the possibility to aggregate spectrum from two separated carriers to create a wider aggregated total bandwidth. Which carriers to combine depends on the spectrum available to the specific operator.</p