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- 저자 : ( Wai K Leung ) (검색결과 36 건)
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Can herbal extracts be used as skin penetrating agent
Leung Ping Chung,Zhao Xin,Law Wai Tak,Lau Tai Wai David 경희대학교 융합한의과학연구소 2007 Oriental Pharmacy and Experimental Medicine Vol.7 No.3
Swollen and painful extremities have been treated with herbal baths in attempts to alleviate the symptoms. A popular herbal bath used in China, contains a component called ‘bone-penetrating herb’ which is believed to facilitate the penetration of herbal substances across the skin to the swollen site, so that pain and swelling will be improved. A search from the Chinese pharmacopedia revealed that 22 different herbs have been traditionally used as ‘bone-penetrating herb’. Five of these herbs were available in market and were chosen for experimental studies. Standard diffusion experiments were done to identify the most effective herb among the five, in the penetration facilitation. Glechoma longituba at a concentration of 20% was found to give the best results in the facilitation of Bromophenol blue diffusion across artificial and biological membranes. When compared with one commonly used diffusion facilitator, viz. azone, azone was found to be more effective than glechoma longituba. The encouraging observations support future studies on the basic science behind the use of herbal components as topical agents to treat pain and swelling.
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Simultaneous Determination of Drag Coefficient and Added Mass
Wai Leung Chan,Taesam Kang IEEE 2011 IEEE JOURNAL OF OCEANIC ENGINEERING - Vol.36 No.3
<P>The drag coefficient and added mass (hydrodynamic mass) are the essential parameters for the dynamics analysis of submerged objects with mobility such as bio-mimicking fish robots or underwater vehicles. The shape dependence of these parameters makes them difficult to have good theoretical approximations and the parameters should be determined either numerically or experimentally. Different experiments have been proposed to obtain either the drag coefficient or added mass. This paper presents a new method to simultaneously determine the drag coefficient and added mass from a simple and economic experiment and a numerical identification procedure. An experiment was carried out to demonstrate the method and the identification error was studied analytically and numerically for some experimental uncertainties.</P>
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Study of Boxfish Propulsion with Rigid Caudal Fins
Wai Leung Chan,Taesam Kang,Kwang Joon Yoon 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The ostraciiform swimming mode is a simple propulsion mechanism for underwater vehicles. Both the swimming velocity and turning rate can be controlled by the flapping of caudal fin. In this research, the thrusting characteristics of an ostraciiform robotic fish were studied with some experiments. The drag coefficient and added mass of the boxfish were also determined experimentally. Both the flapping frequency and amplitude were varied to explore their effects on the terminal velocity. The experimental data were compared with some theoretical calculations.
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( Wai K. Leung ) 대한장연구학회 2015 Intestinal Research Vol.13 No.3
With the incidence of inflammatory bowel disease (IBD) increasing rapidly in many Asian countries, including Hong Kong, it is important that patient characteristics are better understood. For example, are the phenotypes, behaviors, complications, and even treatment responses found in Asian patients similar to those of their Western counterparts? To formally address these questions, a properly designed local cohort study is needed. Whilst IBD is still relatively uncommon in Asia, the establishment of a local IBD registry will significantly contribute to the answering of these questions. The Hong Kong IBD registry was establishedto fill the gap in the understanding of IBD patients, and to foster research into IBD in Hong Kong. The Hong Kong IBD registry is a territory-wide registry that includes all public hospitals in Hong Kong. We included all IBD patients who were currently receiving medical care at these hospitals. With the help of the central computer medical record system of the HospitalAuthority of Hong Kong, all clinical events, medications usage, endoscopy records, and laboratory results of patients in the registry were captured. Apart from data collection, the registry is also establishing a bio-specimen bank of blood and stool samples of IBD patients for future research. The IBD registry is a very useful platform for population-based studies on IBD in Asia. (Intest Res 2015;13:208-212)
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Leung, Alice Wai Yi,Chan, Ruth Suk Mei,Sea, Mandy Man Mei,Woo, Jean The Korean Nutrition Society 2019 Nutrition Research and Practice Vol.13 No.5
BACKGROUND/OBJECTIVES: Existing evidence on lifestyle modification programs for weight loss is limited by the high attrition rate of such programs. Identifying predictors of adherence to a lifestyle modification program could result in program improvement. However, little is known about behavior-specific adherence and its psychological predictors. This study aimed to examine the psychological predictors of adherence after one-month participation in a community-based lifestyle modification program among Chinese overweight and obese adults in Hong Kong. SUBJECTS/METHODS: A total of 205 Chinese overweight and obese adults aged $38.9{\pm}10.5years$ completed the study. Data were collected at baseline and after one month using self-reported questionnaires, which assessed knowledge (self-developed scale), motivation (Treatment Self-Regulation Questionnaire), stage of change (Stage of Exercise Scale) and self-efficacy (Self-Rated Abilities for Health Practices Scale). At one month, a 4-day dietary recall and the International Physical Activity Questionnaire-Short Form were used to assess dietary and physical activity (PA) adherence. Food and PA diaries were examined to indicate self-monitoring. Program attendance was tracked between baseline and one-month follow-up. RESULTS: After one month, participants reported high dietary adherence, attendance, and adherence to self-monitoring but low PA adherence. Multiple regression analyses suggested that diet self-efficacy (baseline) and nutrition knowledge (one-month change) were independent predictors of dietary adherence score at one month, whereas autonomous PA motivation (baseline) and PA self-efficacy (both baseline and one-month change) were independent predictors of PA adherence score at one month. No significant psychological predictor was identified for attendance or self-monitoring. CONCLUSIONS: The results suggest that the effect of psychological factors on adherence differs between diet and PA adherence outcomes. To promote adherence, practitioners should assess self-efficacy, knowledge, and motivation at the beginning of a weight-loss program and explore behavior-specific strategies to improve knowledge and self-efficacy. The results of this study have direct implications for program improvements.
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The Intended Curriculum and Cultural Traditions -A Comparative Case Study of Berlin and Hong Kong
( Ka Wai Lui ),( Leung Frederick Koon Shing ) 한국수학교육학회 2011 수학교육연구 Vol.15 No.3
Many studies such as Pepin (1999a; 1999b), Kaiser (2002), and Park & Leung (2006) revealed that there is a strong dependence of mathematics teaching on cultural traditions in different countries. This study was set up as a detailed comparison between the intended curricula in Berlin and Hong Kong to explore how cultural tradition influenced the intended curriculum. In this study, the intended curriculum is what the (local, state or national) curriculum developers stipulate in the official documents. The German educational system is influenced by the curriculum tradition called Didaktik. Didaktik is a tradition about teaching and learning. Since 16th century, Didaktik has been the most important tool for planning, enacting, and thinking about teaching in most of northern and central Europe (Westbury, 1998). On the other hand, the education system in Hong Kong is influenced by both the Anglo-Saxon curriculum tradition and the Confucian heritage culture (CHC). It was found in this study that, although many studies revealed that there is a strong dependence on cultural traditions of mathematics teaching in different countries, other factors such as social factors or the education system also played an important part in shaping the intended mathematics curriculum. So a simplistic view of dependence of the curriculum on cultural traditions is not warranted. The formation of the curriculum is a much more complicated process encompassing various factors including needs of society, advancement of technology, and government policies at different Levels.
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Can herbal extracts be used as skin penetrating agent
Chung, Leung Ping,Xin, Zhao,Tak, Law Wai,David, Lau Tai Wai Kyung Hee Oriental Medicine Research Center 2007 Oriental pharmacy and experimental medicine Vol.7 No.3
Swollen and painful extremities have been treated with herbal baths in attempts to alleviate the symptoms. A popular herbal bath used in China, contains a component called 'bone-penetrating herb' which is believed to facilitate the penetration of herbal substances across the skin to the swollen site, so swollen site, so that pain and swelling will be improved. A search from the Chinese pharmacopedia revealed that 22 different herbs have been traditionally used as 'bone-penetrating herb'. Five of these herbs were available in market and were chosen for experimental studies. Standard diffusion experiments were done to identify the most effective herb among the five, in the penetration facilitation. Glechoma longituba at a concentration of 20% was found to give the best results in the facilitation of Bromophenol blue diffusion across artificial and biological membranes. When compared with one commonly used diffusion facilitator, viz. azone, azone was found to be more effective than glechoma longituba. The encouraging observations support future studies on the basic science behind the use of herbal components as topical agents to treat pain and swelling.
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梁偉基(Leung Wai Kei) 서울대학교 동아문화연구소 2018 東亞文化 Vol.56 No.-
The paper aims to study the establishment of Jing Nan’s Garrison force 荊南屯駐大軍 in order to explore Emperor Song Gaozong 宋高宗 (r.1127-1162)’s policy on adjusting the military forces along the northern defense line. After inheriting the throne in 1127, he coped with internal rebellions and the invasion of the Jurchen. As a result, he was forced to depend on military general to defend his regime. He clearly knew that he needed to control his military general or else they would become recalcitrant. In 1141, Gaozong regained military power from the most powerful military general: Yue Fei 岳飛, Zhang Jun 張俊 and Han Shizhong 韓世忠. Besides, Gaozong promoted their subordinates to command the garrison forces. In order to attain balance of power, he prepared to build up more garrison forces along the northern defense line. Under such military consideration, Jing Nan’s Garrison force was established.
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Alice Wai Yi Leung,Ruth Suk Mei Chan,Mandy Man Mei Sea,Jean Woo 한국영양학회 2019 Nutrition Research and Practice Vol.13 No.5
BACKGROUND/OBJECTIVES: Existing evidence on lifestyle modification programs for weight loss is limited by the high attrition rate of such programs. Identifying predictors of adherence to a lifestyle modification program could result in program improvement. However, little is known about behavior-specific adherence and its psychological predictors. This study aimed to examine the psychological predictors of adherence after one-month participation in a community-based lifestyle modification program among Chinese overweight and obese adults in Hong Kong. SUBJECTS/METHODS: A total of 205 Chinese overweight and obese adults aged 38.9 ± 10.5 years completed the study. Data were collected at baseline and after one month using self-reported questionnaires, which assessed knowledge (self-developed scale), motivation (Treatment Self-Regulation Questionnaire), stage of change (Stage of Exercise Scale) and self-efficacy (Self-Rated Abilities for Health Practices Scale). At one month, a 4-day dietary recall and the International Physical Activity Questionnaire-Short Form were used to assess dietary and physical activity (PA) adherence. Food and PA diaries were examined to indicate self-monitoring. Program attendance was tracked between baseline and one-month follow-up. RESULTS: After one month, participants reported high dietary adherence, attendance, and adherence to self-monitoring but low PA adherence. Multiple regression analyses suggested that diet self-efficacy (baseline) and nutrition knowledge (one-month change) were independent predictors of dietary adherence score at one month, whereas autonomous PA motivation (baseline) and PA self-efficacy (both baseline and one-month change) were independent predictors of PA adherence score at one month. No significant psychological predictor was identified for attendance or self-monitoring. CONCLUSIONS: The results suggest that the effect of psychological factors on adherence differs between diet and PA adherence outcomes. To promote adherence, practitioners should assess self-efficacy, knowledge, and motivation at the beginning of a weight-loss program and explore behavior-specific strategies to improve knowledge and self-efficacy. The results of this study have direct implications for program improvements.
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