Browsing by Autor "Geomarvins Contreras"

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    Inducción de embriogénesis somática en Cedrela odorata L
    (1998) Noralba Angarita de Torres; Geomarvins Contreras
    In order to stablish a mass regeneration direct system of C. odorata that allows to achieve an genetic improvement program furthermore, parts of inmature zigotic embryos of cedar with about 1 mm lenght, were used as explants and cultured in vitro. Somatic embryogenesis was induced in MS (1962) medium supplemented with (mg/1) myo-inositol 100, sucrose 30.000, vitamins B5 (Gamborg et. al. 1968), 2,4-D (4,0 and 6,0) and DBA 1,3%. Embryos were incubated in darkness at 27 ± 2° C. Three or four months later, some globular structures were observed arising directly from the explants on the medium with 6 mg/ 1 of 2,4-D. Furthermore, some cotiledonary structures were developed with flattened hypocotyls. These structures were subcultured in a half strenght MS medium, auxin free, in order to get enlargement and eventual germination .
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    Signos y síntomas de enfermedades músculo-esqueléticas en odontólogos de la FOULA
    (2017) Ricardo Becerra; Geomarvins Contreras; Sarahí Delgado; Karelys González; Dalietsy Gutiérrez; Rossyel Rivas; Rafael Rueda Rueda
    Due to the daily activity of their professional practice, dentists are prone to musculoskeletal injuries as an occupational disease. The aim of this study was to describe the signs and symptoms of musculoskeletal disease in dentists professors of the FOULA. For this purpose two questionnaires measuring pain, discomfort or musculoskeletal problems were used. The results were obtained on tables and graphs that reflect the frequency and percentage of occurrence of the variables studied, noting that 52.8 % of respondents dentists had pain in the neck and 41.5 % in the lumbar area, which involves a possible risk of suffering in future, some sort of work-related musculoskeletal disease, such as cervical pain or lumbago musculoskeletal disease.