4,494 research outputs found
Food habits of Formosan rock macaques (Macaca cyclopis) in Jentse, northeastern Taiwan, assessed by fecal analysis and behavioral observation.
No full textSectoral allocation by gender of Latin American workers over the liberalization period of the 1990s
Full text linkThe recent restructuring of Latin American economies has renewed interest in the effects of trade liberalization, on labor markets, and on the gender division of labor. The author does not attempt to establish casuality between economic reforms, and the types of jobs that men and women hold. Instead, she provides a detailed description of the trends in male, and female formal, and informal sector participation during the economic reform period in Argentina, Brazil, and Costa Rica. The author first compares the gender composition of the formal, informal wage, and self-employment sectors in a year before reforms (1988 for Argentina, 1989 for Brazil, and Costa Rica), and a year after reforms implementation (1997 for Argentina, 1995 for Brazil and Costa Rica). Although women continued to be more likely than men to work in the informal wage sector, there is no trend of"masculinization"or"feminization"of the informal sector, or any other. Instead, in Argentina men have overtaken women as the most prevalent workers in the informal wage sector, while in Brazil, the opposite has occurred (as men move into self-employment). In Costa Rica there have been no statistical, observable changes. The author then considers the distribution across sectors within each gender group, to identify whether men, and women are more likely to select different sectors in the post-reform period relative to the pre-reform period. Among both men, and women in all three countries (except Brazilian men), workers have become more likely to hold informal wage jobs, and less likely to hold formal sector jobs. Trends in human capital accumulation explain these changes for both men, and women, while changes in gender roles, primarily in homecare and marriage, do not seem to have an effect.Health Monitoring&Evaluation,Labor Policies,Population&Development,Public Health Promotion,Environmental Economics&Policies,Health Monitoring&Evaluation,Environmental Economics&Policies,Population&Development,Banks&Banking Reform,Work&Working Conditions
"Colombia no es consciente de su problema de DD. HH."
No full textReinaldo Villalba abandonó la docencia que ejerció durante 22 años para dedicar su tiempo a la defensa de los DD. HH. en Colombia. Este abogado nacido en Pasca, Cundinamarca desde su permanencia en las aulas de la Universidad Nacional tomó la decisión de dedicar su actividad profesional "a la defensa de los debiles"
"Colombia no es consciente de su problema de DD. HH."
No full textReinaldo Villalba abandonó la docencia que ejerció durante 22 años para dedicar su tiempo a la defensa de los DD. HH. en Colombia. Este abogado nacido en Pasca, Cundinamarca desde su permanencia en las aulas de la Universidad Nacional tomó la decisión de dedicar su actividad profesional "a la defensa de los debiles"
Lamotrigine inhibits postsynaptic AMPA receptor and glutamate release in the dentate gyrus.
No full text
La exclusión urbana y su impacto en los espacios recreativos del AA. HH. Sánchez Cerro, Sullana - 2023
Full text linkLa investigación titulada La Exclusión Urbana y su Impacto en los Espacios
Recreativos del AA. HH. Sánchez Cerro, Sullana – 2023, tiene como objetivo
principal Analizar el impacto de exclusión urbana en los espacios recreativos del
AA. HH. Sánchez Cerro, Sullana – 2023. Esta se desarrolló bajo un enfoque
mixto tipo descriptiva, con un diseño no experimental transversal. Fueron 71
habitantes del AA. HH. Sánchez Cerro quienes constituyen la muestra para esta
investigación. Como instrumentos se utilizaron la encuesta, la ficha de
observación y la guía de entrevista semiestructurada; para el procesamiento y
organización de datos se utilizaron los programas SPSS y Excel. Como
resultados se obtuvo que la exclusión urbana trae consigo una serie de
características negativas que impiden una convivencia óptima entre sus
habitantes y los espacios recreativos, pues ellos y su falta de principios generan
el deterioro de estos espacios. Se concluye que, la exclusión urbana si impacta
de manera significativa a los espacios recreativos, debido a que esta trae consigo
circunstancias como la marginación social, la vulnerabilidad y la falta de progreso
social las cuales afectan seriamente a los espacios recreativos del AA. HH.
Sánchez Cerro
A proof of concept of a BioMEMS glucose biosensor using microfabricated SU-8 films
Full text linkThe present project investigated and proved the concept of developing a novel
BioMEMS glucose micro-biosensor using a simple one-step microfabrication process of
the widely used SU-8 polymer. More specifically, the study focused on the investigation
of the suitability of the SU-8 polymer as a matrix for enzyme immobilisation that is
carried out during the microfabrication process. A comparative study between
commercially available SU-8 and “customised” SU-8 solutions showed that the
optimum concentration of photo-initiator for stress reduction can be achieved easier
with “customised” SU-8 solutions. The most appropriate type of microstructure for the
SU-8 matrix and the corresponding required microfabrication process were defined and
encapsulation of the enzyme GOx in the SU-8 solution was accomplished. A detailed
experimental investigation of the immobilised enzyme’s activity inside the SU-8 matrix,
was carried out using amperometric detection of hydrogen peroxide in a 3-electrode setup.
SU-8 films were immersed in a buffer solution and the platinum working electrode
was brought in close contact with the film. Films without enzyme showed negligible
variation in current upon the addition of glucose, as opposed to films with encapsulated
enzyme which showed a very clear increase in current. Experiments using films of
increased thickness or enzyme concentration, showed a higher response, thus proving
that the enzyme remained active not only on the film’s surface, but inside the matrix as
well. In the fluorescence spectroscopy experiments, the utilisation of the tris (4,7-
diphenyl-1,10-phenanthroline) ruthenium(II) dichloride oxygen indicator, which was
also captured in the polymer matrix during the microfabrication process, was proven to
be very sensitive to glucose concentration changes during the glucose oxidation and
there was no photo-bleaching.
The experimental investigations proved that the proposed concept of using SU-8
matrices for the immobilisation of biomolecules, is a valid proposal for the construction
of a BioMEMS glucose biosensor. An important outcome was the successful
immobilisation of glucose oxidase in SU-8 microfabricated structures. The enzyme still
showed activity despite the “hostile” conditions during microfabrication The proof of
principle of enzyme immobilisation in SU-8 films opens up new possibilities for
combining BioMEMS with biosensors and organic electronics
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