"La gestión del conocimiento y la investigación universitaria" es el título de la conferencia que ofreció la Dra. Margarita Gaviria Velásquez. docente e investigadora de la Escuela interamericana de Bibliotecología de la Universidad de Antioquia, Medellín, Colombia, durante el Seminario 1nternacional "Gestión del conocimiento: Realidades y Perspectivas", que, organizado por la Sección de Bibliotecología y Ciencia de la información del Departamento de Humanidades de nuestra Universidad, se realizó los días 26 y 27 de septiembre de 2008. Nos complace reproducir el texto de la conferencia que, estamos seguros, será de interés para los profesionales de la información y también para quienes siguen con atención los debates que. sobre la investigación universitaria y su relación con la sociedad del conocimiento, se producen con frecuencia en la actualidad. La universidad deb...

We shall report here the results of the cytogenetic analysis in 124 female patients that had visited the clinic Hospitals because in all the cases they had a gonadal disfunction and/or a deficit in height, 93 women had a normal karyotype (0.75) and 31 (0.25) an abnormal karyotype. The monosomy of the X chromosome 45,X with 16 times (0.52) were the more frequently among the abnonnal karyotypes, followed by the isochromosome of the X long arm with 7 times (0.22), in 3 cases (0.10) the karyotypes were 46,XY and the patients affected by the testicular feminization syndrome, 2 cases (0.06) it were a ring of the X, in 1 case (0,03) a balanced rept (X;X)(q27;q21) and the two others were mosaics with 2 cellular lines. Among the turnerian stigmata the low set nucal hair and the cubitus valgus were the most frequentIy encountered, but the small stature and the gonadal disfunction were always prese...

We shall report here the results of the cytogenetic analysis in 124 female patients that had visited the clinic Hospitals because in all the cases they had a gonadal disfunction and/or a deficit in height, 93 women had a normal karyotype (0.75) and 31 (0.25) an abnormal karyotype. The monosomy of the X chromosome 45,X with 16 times (0.52) were the more frequently among the abnonnal karyotypes, followed by the isochromosome of the X long arm with 7 times (0.22), in 3 cases (0.10) the karyotypes were 46,XY and the patients affected by the testicular feminization syndrome, 2 cases (0.06) it were a ring of the X, in 1 case (0,03) a balanced rept (X;X)(q27;q21) and the two others were mosaics with 2 cellular lines. Among the turnerian stigmata the low set nucal hair and the cubitus valgus were the most frequentIy encountered, but the small stature and the gonadal disfunction were always prese...

Conventional chromosomal preparations were made of three native mice from Huánuco, Peru: a male and a female of Thomasomys sp., and a male of Akodon orophilus. Thomasomys sp. had a karyotype of 2n = 42, XY (n = 21), meanwhile A. orophilus presented 2n = 22, XY (n = 11). Comparisons between chromosomal pairs from the existent literature indicate that both are new karyotypes. Thomasomys sp. has a distinct sexual Y chromosome, the only metacentric (m) reported for the genus. The chromosomes X and Y of A. orophilus are acrocentrics (a); and the length of chromosome Y (2/3 of the length of X) distinguishes A. orophilus from other congeneric. Because the structural differences between the sexual chromosomes usually generates mechanism of reproductive isolation at intraspecific level and are bigger still in interspecific crosses, we concluded that the karyotypes reported here support the valid...

Conventional chromosomal preparations were made of three native mice from Huánuco, Peru: a male and a female of Thomasomys sp., and a male of Akodon orophilus. Thomasomys sp. had a karyotype of 2n = 42, XY (n = 21), meanwhile A. orophilus presented 2n = 22, XY (n = 11). Comparisons between chromosomal pairs from the existent literature indicate that both are new karyotypes. Thomasomys sp. has a distinct sexual Y chromosome, the only metacentric (m) reported for the genus. The chromosomes X and Y of A. orophilus are acrocentrics (a); and the length of chromosome Y (2/3 of the length of X) distinguishes A. orophilus from other congeneric. Because the structural differences between the sexual chromosomes usually generates mechanism of reproductive isolation at intraspecific level and are bigger still in interspecific crosses, we concluded that the karyotypes reported here support the valid...

Objectives: To advance in the knowledge of Peruvian populations’ origin in a phylogeographical context. Design: Population genetics study. Setting: Human Genetics Laboratory, Biological Sciences Faculty, Universidad Nacional Mayor de San Marcos, and Genetics and Molecular Biology Institute, Faculty of Medicine, Universidad San Martin de Porras, Lima, Peru. Participants: Seven Peruvian populations. Methods: Comparative analysis of mtDNA and MBL nuclear gene study results in seven Peruvian populations processed separately and then combined using PHYLYP 3.65 Program in order to obtain FST values of genetic differentiation; construction of distance trees by applying UPGMA algorithm and subsequent generated clusters’ analysis. Main outcome measures: Genetic trees. Results: Trees generated for each genetic marker had proper and distinct topologies among them. Combined processing resulted i...