Employing a qualitative view of issues in nonverbal communication, the author offers an explanation of the nature-nurture debate. The anthropological view, taken by Birdwhistell and others, is compared with a Darwinia...Employing a qualitative view of issues in nonverbal communication, the author offers an explanation of the nature-nurture debate. The anthropological view, taken by Birdwhistell and others, is compared with a Darwinian perspective. In particular, the author looks at how physical appearance, space, and gestures function in a natural way to protect the individuals who are participating in the exchange. Apparent deceit is frequently the result of such interactions. While the traditional arguments arising from religious tenets are discussed, the author explains how the nature approach has been reinforced in the 20th and 21st centuries with DNA and neurological investigations. In the study of nonverbal communication, the arguments about nature and nurture began in the middle of the 20th century with anthropologists, especially Birdwhistell, taking the nurture stance and others taking the nature stance. Ekman＇s nature stance on kinesics started from premises suggested by Charles Darwin. In large measure, it is because of Ekman＇s extensive work that the ＂balance＂ has somewhat shifted toward a nature view.展开更多
Objective: Labisia pumila var. alata, commonly known as 'Kacip Fatimah' or 'Selusuh Fatimah' in Southeast Asia, is traditionally used by members of the Malay community because of its post-partum medici...Objective: Labisia pumila var. alata, commonly known as 'Kacip Fatimah' or 'Selusuh Fatimah' in Southeast Asia, is traditionally used by members of the Malay community because of its post-partum medicinal properties. Its various pharmaceutical applications cause an excessive harvesting and lead to serious shortage in natural habitat. Thus, this in vitro propagation study investigated the effects of different plant growth regulators (PGRs) on in vitro leaf and stem explants of L. pumila. Methods: The capabilities of callus, shoot, and root formation were evaluated by culturing both explants on Murashige and Skoog (MS) medium supplemented with various PGRs at the concentrations of 0, 1, 3, 5, and 7 mg/L. Results: Medium supplemented with 3 mg/L indole-3-butyric acid (IBA) showed the optimal callogenesis from both leaf and stem explants with (72.34±19.55)% and (70.40±14.14)% efficacy, respectively. IBA was also found to be the most efficient PGR for root induction. A total of (50.00±7.07)% and (77.78±16.47)% of root formation were obtained from the in vitro stem and leaf explants after being cultured for (26.5±5.0) and (30.0±8.5) d in the medium supplemented with 1 and 3 mg/L of IBA, respectively. Shoot formation was only observed in stem explant, with the maximum percentage of formation ((100.00±0.00)%) that was obtained in 1 mg/L zeatin after (11.0±2.8) d of culture. Conclusions: Callus, roots, and shoots can be induced from in vitro leaf and stem explants of L. pumila through the manipulation of types and concentrations of PGRs.展开更多
文摘Employing a qualitative view of issues in nonverbal communication, the author offers an explanation of the nature-nurture debate. The anthropological view, taken by Birdwhistell and others, is compared with a Darwinian perspective. In particular, the author looks at how physical appearance, space, and gestures function in a natural way to protect the individuals who are participating in the exchange. Apparent deceit is frequently the result of such interactions. While the traditional arguments arising from religious tenets are discussed, the author explains how the nature approach has been reinforced in the 20th and 21st centuries with DNA and neurological investigations. In the study of nonverbal communication, the arguments about nature and nurture began in the middle of the 20th century with anthropologists, especially Birdwhistell, taking the nurture stance and others taking the nature stance. Ekman＇s nature stance on kinesics started from premises suggested by Charles Darwin. In large measure, it is because of Ekman＇s extensive work that the ＂balance＂ has somewhat shifted toward a nature view.
文摘Objective: Labisia pumila var. alata, commonly known as 'Kacip Fatimah' or 'Selusuh Fatimah' in Southeast Asia, is traditionally used by members of the Malay community because of its post-partum medicinal properties. Its various pharmaceutical applications cause an excessive harvesting and lead to serious shortage in natural habitat. Thus, this in vitro propagation study investigated the effects of different plant growth regulators (PGRs) on in vitro leaf and stem explants of L. pumila. Methods: The capabilities of callus, shoot, and root formation were evaluated by culturing both explants on Murashige and Skoog (MS) medium supplemented with various PGRs at the concentrations of 0, 1, 3, 5, and 7 mg/L. Results: Medium supplemented with 3 mg/L indole-3-butyric acid (IBA) showed the optimal callogenesis from both leaf and stem explants with (72.34±19.55)% and (70.40±14.14)% efficacy, respectively. IBA was also found to be the most efficient PGR for root induction. A total of (50.00±7.07)% and (77.78±16.47)% of root formation were obtained from the in vitro stem and leaf explants after being cultured for (26.5±5.0) and (30.0±8.5) d in the medium supplemented with 1 and 3 mg/L of IBA, respectively. Shoot formation was only observed in stem explant, with the maximum percentage of formation ((100.00±0.00)%) that was obtained in 1 mg/L zeatin after (11.0±2.8) d of culture. Conclusions: Callus, roots, and shoots can be induced from in vitro leaf and stem explants of L. pumila through the manipulation of types and concentrations of PGRs.
