4,556 research outputs found
Book review. Capabilities, freedom, and equality: Amartya Sen’s work from a gender perspective by Bina Agarwal, Jane Humphries, and Ingrid Robeyns (eds.). Delhi: Oxford University Press.
No full textEvaluación de parámetros productivos en las líneas genéticas Cobb no sexable® vs. Arbor Acres Plus® × Ross® provenientes de reproductoras Arbor Acres Plus® de 35 semanas y Cobb no sexable® de 29 semanas de edad
No full text12 p.En el presente estudio se compararon las líneas genéticas Cobb no sexable® vs. Arbor Acres Plus® × Ross®. El objetivo del estudio fue evaluar el comportamiento de los parámetros productivos. El ensayo se realizó en el Centro de Investigación y Enseñanza Avícola de la Escuela Agrícola Panamericana. Se evaluaron 2,352 aves, Arbor Acres Plus® × Ross® con edad de madre de 35 semanas y Cobb no sexables® con edad de madre de 29 semanas, divididos en 42 corrales con dimensiones de (1.25 × 3.75 m) con densidad de 12 aves/m2, el periodo de cría duró 35 días. La temperatura del galpón se controló con calentadores de gas y ventiladores, el consumo de alimento y agua fue ad libitum utilizando bebederos de niple y comederos de tolvas. El estudio tuvo tres tratamientos: T1 Machos Arbor Acres Plus® × Ross®, T2 Hembras Arbor Acres Plus®× Ross®, T3 Mixto Cobb no sexables®, con 14 repeticiones por tratamiento. Se utilizó un diseño de bloques incompletos al azar con medidas repetidas en el tiempo. Se midieron los parámetros productivos: peso corporal, consumo de alimento, índice de conversión alimenticia, ganancia de peso y porcentaje de mortalidad. La línea Machos Arbor Acres Plus® × Ross® presentó el mayor peso corporal, mayor consumo y ganancia de peso que los demás tratamientos (P<0.05). La línea Mixto Cobb no sexables® presentó el mejor índice de conversión alimenticia a los 35 días que los demás tratamientos (P<0.05). No se encontró diferencia significativa entre los tratamientos en cuanto a porcentaje de mortalidad.1. Índice de cuadros 2. Introducción 3. Materiales y métodos 4. Resultados y discusión 5. Conclusiones 6. Recomendaciones 7. Literatura citad
Breve historia del hispanismo inglés
No full textEs separata de: Arbor, n. 28-29, abril-mayo 1948Publicado en Arbor, Revista General de Investigación y CulturaÉ separata de: Arbor, n. 28-29, abril-mayo 194
Un pintor español de la contrarreforma
No full textEs separata de: "Arbor, n. 29, Mayo 1948"É separata de: Arbor, n. 29, Mayo 194
Efficacy of the repellent N,N-diethyl-3-methyl-benzamide (DEET) against tabanid flies on horses evaluated in a field test in Switzerland
No full textFemale tabanid flies (Diptera: Tabanidae) can be a serious nuisance for horses because of their painful bites during blood feeding. They also play a primary role in mechanical transmission of a lentivirus causing Equine Infectious Anemia (EIA), a virus that has spread within Europe in recent years. According to the European law for products intended for use as a repellent on horses (recreational and sport horses), a field test is mandatory to demonstrate sufficient repellency of such a substance against the specific target fly species, but currently no agreed protocols are available for testing of potential repellents. The aim of the present study was to establish a protocol for a field test to investigate the efficacy of N,N-diethyl-3-methyl-benzamide (DEET, Brum(®), Huebeli-Stud Horse Care AG) in a 15-17% oil-water emulsion against tabanid flies on horses up to four hours. Between July and August 2015, four horses on three farms each were tested on two consecutive days in a cross-over design. The four horses on Farm A were used in the pre-test as well as in the main test. Two and a half hours after repellent application the horses were lunged until sweating. Tabanid fly infestations were both photographed and directly counted during five minutes 3 and 4h after repellent application on the right side of the horses in the area from the head to the flank, belly and first third of the foreleg. Without repellent application, up to 29 tabanid flies were counted on a horse, whereas the maximum for the repellent treated horses was four. In 50% of the horses treated with DEET there were no Tabanids observed (efficacy 100%), and in all horses the tabanid fly counts were lower than in the control horses with one exemption at 4h. The efficacy of the DEET repellent was at least 80% and 71% respectively, three or four hours after application (with a confidence level of 89%). A fly trap (Horse Pal) revealed the presence of the tabanid species Tabanus brominus and Haematopota pluvialis, but also non-specified arthropods. The design of the present study simulated practical conditions, allowed to quantify the number of tabanids flies and to demonstrate repellency of DEET in horses
Absorbing new subjects: holography as an analog of photography
No full textI discuss the early history of holography and explore how perceptions, applications, and forecasts of the subject were shaped by prior experience. I focus on the work of Dennis Gabor (1900–1979) in England,Yury N. Denisyuk (b. 1924) in the Soviet Union, and Emmett N. Leith (1927–2005) and Juris Upatnieks (b. 1936) in the United States. I show that the evolution of holography was simultaneously promoted and constrained by its identification as an analog of photography, an association that influenced its assessment by successive audiences of practitioners, entrepreneurs, and consumers. One consequence is that holography can be seen as an example of a modern technical subject that has been shaped by cultural influences more powerfully than generally appreciated.
Conversely, the understanding of this new science and technology in terms of an older one helps
to explain why the cultural effects of holography have been more muted than anticipated by forecasters
between the 1960s and 1990s
"Nuestra América": fundación y apropiación cultural de la nación americana
No full textThe article examines the discursive construction of Marti’s Our America which emerges in the post-independent era. The author clarifies its historical origins, through the analysis of a cultural appropriation model. It argues that this name responds to the desire to build the modern American identity.El artículo interpreta el discurso de Martí sobre Nuestra América desde el punto de vista de la apropiación cultural de todo un continente. Es el nombre de una identidad colectiva hecha de semejanzas internas y diferencias externas. Pero al mismo tiempo también expresa la inmensidad de las sociedades americanas, la riqueza y pluralidad de sus culturas. El nombre Nuestra América refuerza los vínculos que atan al grupo y al mismo tiempo justifica su existencia y le otorga un valor
AATD system technical characteristics, design concepts, and trauma assessment criteria. Task E-F final report
No full textReference: Advanced Anthropomorphic Test Device (AATD) Development Program. Phase 1 Reports: Concept Definition. Washington, D.C., NHTSA, Feb 1988.Notes: Report covers the period Aug 1983 - Sept 1985.National Highway Traffic Safety Administration, Washington, D.C.University of Michigan, Ann Arbor, Transportation Research Institutehttp://deepblue.lib.umich.edu/bitstream/2027.42/1440/2/76738a06.0001.001.pd
Tecnologias de remediação em áreas impactadas com hidrocarbonetos de petróleo: estudo de caso em posto de combustível por extração multifásica
No full textEmerging needs for nontraditional transit
No full textTransportation Department, Washington, D.C.University of Michigan, Ann Arbor, Transportation Research Institute, Great Lakes Center for Truck and Transit Researchhttp://deepblue.lib.umich.edu/bitstream/2027.42/1293/2/92657.0001.001.pd
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