Between July 1993 and December 1994, we estimated the population size of the Torrent Duck at the ... more Between July 1993 and December 1994, we estimated the population size of the Torrent Duck at the Ucumarí Regional Natural Park, characterized its habitat, and described some aspects of its feeding habits and diet. We found seven pairs of adult birds along a 15 km transect of the Otún River which crosses the Park. Both the frequency of observation of
Journal of Consulting and Clinical Psychology, 1980
To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish... more To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish than in English, Spanish and English versions of the Peabody Picture Vocabulary Test (PPVT) were administered to 33 boys and 42 girls, ages 3 years 6 months to 12 years 5 ...
Journal of Consulting and Clinical Psychology, 1980
To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish... more To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish than in English, Spanish and English versions of the Peabody Picture Vocabulary Test (PPVT) were administered to 33 boys and 42 girls, ages 3 years 6 months to 12 years 5 ...
in Vitro Cellular & Developmental Biology-plant, 2001
In a short period of time, a large number of adventitious shoots were regenerated from longitudin... more In a short period of time, a large number of adventitious shoots were regenerated from longitudinal sections of in vitro-germinated seedlings of the endangered Mexican cactus, Turbinicarpus laui. The induction medium consisted of Murashige and Skoog salts, supplemented with 6-benzylaminopurine (BA) and α-naphthaleneacetic acid (NAA) in a wide range of combinations. The most effective concentrations of growth regulators for shoots initiation were 8.8–13.32 μM BA with 0–2.68 μM NAA. After 3–4 mo., individualized shoots were rooted on half-strength Murashige and Skoog medium and then transferred to soil to acclimatize under greenhouse conditions. In vitro strategies play a key role in the conservation and propagation of this commercially important endangered species of cactus.
Between July 1993 and December 1994, we estimated the population size of the Torrent Duck at the ... more Between July 1993 and December 1994, we estimated the population size of the Torrent Duck at the Ucumarí Regional Natural Park, characterized its habitat, and described some aspects of its feeding habits and diet. We found seven pairs of adult birds along a 15 km transect of the Otún River which crosses the Park. Both the frequency of observation of
Journal of Consulting and Clinical Psychology, 1980
To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish... more To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish than in English, Spanish and English versions of the Peabody Picture Vocabulary Test (PPVT) were administered to 33 boys and 42 girls, ages 3 years 6 months to 12 years 5 ...
Journal of Consulting and Clinical Psychology, 1980
To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish... more To determine whether balanced-bilingual, Mexican-American children are more proficient in Spanish than in English, Spanish and English versions of the Peabody Picture Vocabulary Test (PPVT) were administered to 33 boys and 42 girls, ages 3 years 6 months to 12 years 5 ...
in Vitro Cellular & Developmental Biology-plant, 2001
In a short period of time, a large number of adventitious shoots were regenerated from longitudin... more In a short period of time, a large number of adventitious shoots were regenerated from longitudinal sections of in vitro-germinated seedlings of the endangered Mexican cactus, Turbinicarpus laui. The induction medium consisted of Murashige and Skoog salts, supplemented with 6-benzylaminopurine (BA) and α-naphthaleneacetic acid (NAA) in a wide range of combinations. The most effective concentrations of growth regulators for shoots initiation were 8.8–13.32 μM BA with 0–2.68 μM NAA. After 3–4 mo., individualized shoots were rooted on half-strength Murashige and Skoog medium and then transferred to soil to acclimatize under greenhouse conditions. In vitro strategies play a key role in the conservation and propagation of this commercially important endangered species of cactus.
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