Objective:To access the anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe（OP） grade black tea with a view to develop an anti-aging skin formulation.Methods:Five concentrations（0.125,0.250,0....Objective:To access the anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe（OP） grade black tea with a view to develop an anti-aging skin formulation.Methods:Five concentrations（0.125,0.250,0.500,1.000 and 2.000 mg/mL） of black tea brew（BTB） were made using a freeze dried sample of Sri Lankan low grown orthodox OP grade black tea which was prepared according to international organization for standardization specification.Epigallocatechin gallate（EGCG） was used as the reference agent（concentrations tested:0.012,0.025,0.050,0.100 and 0.200 mg/mL）.Anti-hyaluronidase activity of BTB and EGCG in vitro were ascertained spectrometrically using hyaluronic acid（from rooster comb）and bovine testicular hyaluronidase.Results:The results revealed that BTB had moderate[IC50=（1.09±0.12） mg/mL]and dose dependent（r2=0.94） anti-hyaluronidase activity.EGCG also exhibited dose dependent（r2=0.93,P【0.05） anti-hyaluronidase activity which was superior[IC50=（0.09±0.00） mg/mL]to BTB.Conclusions:Sri Lankan low grown orthodox OP gradc black tca has promising antihyaluronidase activity in vitro and has the potential to be used as an anti-aging cosmaceutical.In addition,it may prove useful as a beverage in the management of allergy,some joint diseases and cnvenomation.展开更多
This paper explores the potentials of traditional forms of communication in rural development communication. Experimenting a local development communication model that can be used at the grass-root level communication...This paper explores the potentials of traditional forms of communication in rural development communication. Experimenting a local development communication model that can be used at the grass-root level communication at the community development programs in Sri Lanka is the research objective. This study is a participatory research. Live participatory observation, impact analysis using a questionnaire and direct interview tools were used to analyze the impact of the creative model. This research study was experimented at Rasnayakapura divisional secretariat, Sri Lanka from 2004 to 2005. Results suggest that the traditional forms of communication can be utilized as a useful instrument in the rural community programs more than the dominant use of mass media and conventional use of small group communication. Forms of traditional communication are rich in communication because of their closeness to rural life, credibility, Utilization of familiar signs ＆ symbols, Participation of the same community, collective presentation, Utilization of past experiences, plot and the stories from their own life and psychological understanding （attraction, attention, rationality）. Communicating a message through entertainment was the practice of this model. Finally impact analysis confirmed the success of the model.展开更多
Life narrative is a field which is currently drawing increasing academic interest in Sri Lanka, though life narratives are an integral part of the socio-political fabric of the nation. In the Sri Lankan, context biogr...Life narrative is a field which is currently drawing increasing academic interest in Sri Lanka, though life narratives are an integral part of the socio-political fabric of the nation. In the Sri Lankan, context biography and autobiography are commonly seen as two separate genres in life writing, but certain life narratives tend to blur those boundaries. From This Point Forward, a photography exhibition by Luka Alagiyawanna, My Mother’s Village, a documentary life narrative by Aaron Burton, and Project I Am by Kannan Arunasalam are some examples. The present study analyses life narratives from I Am Jaffna section in Project I Am1; a digital archive of life narratives of Sri Lankan elders. Based on the life narratives, memories, and experiences of Sri Lankan elders, the project strives to find out whether there was a time when people in Sri Lanka did not describe themselves as Sinhalese, Tamil, Muslim, or Burgher, or a time when ethnic identity was not the primary defining factor of an individual. The reviews and articles on the projects have looked at the project merely as a repository of stories that help Sri Lankans understand their differences and a project promoting reconciliation with hardly any focus on the project as a Sri Lankan life narrative, so that a gap bridged by the present study. The study also focuses on the concept and politics of “othering” with a view to exploring how these life narratives are constructed as Sri Lankan life narratives. For this purpose, the study focuses on the segment on people from Jaffna-I am Jaffa, since the Jaffna community has a long standing history of being “the other.” The inseparability of the concept and politics ofothering and the identity of Sri Lankans show that it is extremely challenging to dispose of the notion of the other as it has actually become an integral aspect of Sri Lankan identity and a social reality.展开更多
For tea,which is predominantly out-breeding woody perennial,genetic improvement through conventional approaches is relatively ineffective,slow and costly.As a potential tool to enhance the process,Tea Research Institu...For tea,which is predominantly out-breeding woody perennial,genetic improvement through conventional approaches is relatively ineffective,slow and costly.As a potential tool to enhance the process,Tea Research Institute of Sri Lanka(TRISL) has integrated molecular biology to supplement the conventional program and is in progress.To date,a considerable progress has been achieved in the key areas such as genetic characterization and estimation of genetic diversity,isolation and characterization of EST and genomic SSRs,construction of SSR primers,construction of genetic maps and marker assisted selection and application of genomic approaches to understand the role of secondary metabolites disease resistance in tea and in this paper,a summarized version of above studies is presented.展开更多
Objective:To evaluate inhibitory activity of methylglyoxal(MGO)mediated protein glycation and ability to potentiate its reversing activity and range of antioxidant properties of Sri Lankan low grown orthodox orange pe...Objective:To evaluate inhibitory activity of methylglyoxal(MGO)mediated protein glycation and ability to potentiate its reversing activity and range of antioxidant properties of Sri Lankan low grown orthodox orange pekoe grade black tea.Methods:Freeze dried black tea brew(BTB)was used as the sample in this study.Antiglycation and glycation reversing activity was studied in bovine serum albumin(BSA)-MGO model.Antioxidant properties were studied using total polyphenolic content,total flavonoid content,2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid,1,1-diphenyl-2-picrylhydrazine and ferric reducing antioxidant power in vitro antioxidant assays.Results:The results demonstrated significant(P<0.05)and dose dependant inhibition of BSA-MGO glycation[IC_(50):(164.30±4.85)μg/mL],potentiating of its reversing activity[EC_(50):(235.39±5.37)μg/mL]and marked antioxidant properties[total polyphenolic content:(119.55±9.97)mg gallic acid equivalents/g BTB;total flavonoid content:(6.04±1.26)mg quercetin equivalents/g BTB;2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid,1,1-diphenyl-2-picrylhydrazine and ferric reducing antioxidant power:(3.29±0.06),(1.95±0.15)and(1.31±0.19)mmol Trolox equivalents/g BTB,respectively].No correlations were observed between antioxidant activity and BSA-MGO glycation.Conclusions:The novel properties observed for Sri Lankan orange pekoe grade black tea indicate its usefulness as a supplementary beverage in managing MGO and advanced glycation end products related diseases and ailments.展开更多
Determination of sex from the tibial dimensions has been attempted before in different populations.The formulae developed to determine sex of one population are not appropriate to be applied to another.Seven standard ...Determination of sex from the tibial dimensions has been attempted before in different populations.The formulae developed to determine sex of one population are not appropriate to be applied to another.Seven standard variables including the maximum length of tibia,proximal epiphyseal breadth,distal epiphyseal breadth,minimum circumference of shaft,anteroposterior diameter at nutrient foramen,transverse diameter at the nutrient foramen(TDNF),and circumference at the nutrient foramen obtained from 81 adult tibiae(56 male and 25 female)were analyzed to investigate the sexual dimorphism in the tibial dimensions to establish sex estimating formulae from the tibia in a contemporary Sri Lankan population.Results confirmed the existence of sexual dimorphism of the tibia.Discriminant functions obtained resulted in the classification accuracies ranging from 61.9%to 80.2%.The most dimorphic single parameter in males was the TDNF providing an accuracy of 92.9%,while in females,the minimum circumference of shaft provided an accuracy of 70.4%.The best multivariate equation utilizing two tibial dimensions resulted in an accuracy of 80.2%after cross‑validation.We envisage that sex estimating formulae established in this study for a contemporary Sri Lankan population will contribute toward the biological profiling and identification of unknown skeletal remains.展开更多
Last week, Chinese Premier Wen Jiabao headed a delegation to New Zealand, which was part of his South Pacific trip, to discuss trade and a potential free trade area between the two countries. Ahead of the visit, Beiji...Last week, Chinese Premier Wen Jiabao headed a delegation to New Zealand, which was part of his South Pacific trip, to discuss trade and a potential free trade area between the two countries. Ahead of the visit, Beijing Review spoke with New Zealand Ambassador to China Tony Browne on his country's trade relationship with China.展开更多
'In my childhood,I read articles about Chinese master Monk Faxian’s travels in Sri Lanka and took interest in Chinese and its culture.Later,I knew Premier Zhou Enlai,who had been a friend of the Sri Lanka people ...'In my childhood,I read articles about Chinese master Monk Faxian’s travels in Sri Lanka and took interest in Chinese and its culture.Later,I knew Premier Zhou Enlai,who had been a friend of the Sri Lanka people and helped us when we were in dire need of outside support.In my view,China is like the big brother of Sri Lanka.'—Indrananda展开更多
基金the National Science Foundation of Sri Lanka for funding and Sri Lanka Tea Board for organoleptic analysis. (NSF/Fellow/2011/01)
文摘Objective:To access the anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe（OP） grade black tea with a view to develop an anti-aging skin formulation.Methods:Five concentrations（0.125,0.250,0.500,1.000 and 2.000 mg/mL） of black tea brew（BTB） were made using a freeze dried sample of Sri Lankan low grown orthodox OP grade black tea which was prepared according to international organization for standardization specification.Epigallocatechin gallate（EGCG） was used as the reference agent（concentrations tested:0.012,0.025,0.050,0.100 and 0.200 mg/mL）.Anti-hyaluronidase activity of BTB and EGCG in vitro were ascertained spectrometrically using hyaluronic acid（from rooster comb）and bovine testicular hyaluronidase.Results:The results revealed that BTB had moderate[IC50=（1.09±0.12） mg/mL]and dose dependent（r2=0.94） anti-hyaluronidase activity.EGCG also exhibited dose dependent（r2=0.93,P【0.05） anti-hyaluronidase activity which was superior[IC50=（0.09±0.00） mg/mL]to BTB.Conclusions:Sri Lankan low grown orthodox OP gradc black tca has promising antihyaluronidase activity in vitro and has the potential to be used as an anti-aging cosmaceutical.In addition,it may prove useful as a beverage in the management of allergy,some joint diseases and cnvenomation.
文摘This paper explores the potentials of traditional forms of communication in rural development communication. Experimenting a local development communication model that can be used at the grass-root level communication at the community development programs in Sri Lanka is the research objective. This study is a participatory research. Live participatory observation, impact analysis using a questionnaire and direct interview tools were used to analyze the impact of the creative model. This research study was experimented at Rasnayakapura divisional secretariat, Sri Lanka from 2004 to 2005. Results suggest that the traditional forms of communication can be utilized as a useful instrument in the rural community programs more than the dominant use of mass media and conventional use of small group communication. Forms of traditional communication are rich in communication because of their closeness to rural life, credibility, Utilization of familiar signs ＆ symbols, Participation of the same community, collective presentation, Utilization of past experiences, plot and the stories from their own life and psychological understanding （attraction, attention, rationality）. Communicating a message through entertainment was the practice of this model. Finally impact analysis confirmed the success of the model.
文摘Life narrative is a field which is currently drawing increasing academic interest in Sri Lanka, though life narratives are an integral part of the socio-political fabric of the nation. In the Sri Lankan, context biography and autobiography are commonly seen as two separate genres in life writing, but certain life narratives tend to blur those boundaries. From This Point Forward, a photography exhibition by Luka Alagiyawanna, My Mother’s Village, a documentary life narrative by Aaron Burton, and Project I Am by Kannan Arunasalam are some examples. The present study analyses life narratives from I Am Jaffna section in Project I Am1; a digital archive of life narratives of Sri Lankan elders. Based on the life narratives, memories, and experiences of Sri Lankan elders, the project strives to find out whether there was a time when people in Sri Lanka did not describe themselves as Sinhalese, Tamil, Muslim, or Burgher, or a time when ethnic identity was not the primary defining factor of an individual. The reviews and articles on the projects have looked at the project merely as a repository of stories that help Sri Lankans understand their differences and a project promoting reconciliation with hardly any focus on the project as a Sri Lankan life narrative, so that a gap bridged by the present study. The study also focuses on the concept and politics of “othering” with a view to exploring how these life narratives are constructed as Sri Lankan life narratives. For this purpose, the study focuses on the segment on people from Jaffna-I am Jaffa, since the Jaffna community has a long standing history of being “the other.” The inseparability of the concept and politics ofothering and the identity of Sri Lankans show that it is extremely challenging to dispose of the notion of the other as it has actually become an integral aspect of Sri Lankan identity and a social reality.
基金the financial support from SIDA/SAREC grant for capacity building in BiotechnologyCouncil for Agricultural Research Policy(CARP)-Sri Lanka+1 种基金National Research Council,Sri Lanka(Grant No:NRC 09-066)National Science Foundation-USA and the Tea Research Institute of Sri Lanka.
文摘For tea,which is predominantly out-breeding woody perennial,genetic improvement through conventional approaches is relatively ineffective,slow and costly.As a potential tool to enhance the process,Tea Research Institute of Sri Lanka(TRISL) has integrated molecular biology to supplement the conventional program and is in progress.To date,a considerable progress has been achieved in the key areas such as genetic characterization and estimation of genetic diversity,isolation and characterization of EST and genomic SSRs,construction of SSR primers,construction of genetic maps and marker assisted selection and application of genomic approaches to understand the role of secondary metabolites disease resistance in tea and in this paper,a summarized version of above studies is presented.
文摘Objective:To evaluate inhibitory activity of methylglyoxal(MGO)mediated protein glycation and ability to potentiate its reversing activity and range of antioxidant properties of Sri Lankan low grown orthodox orange pekoe grade black tea.Methods:Freeze dried black tea brew(BTB)was used as the sample in this study.Antiglycation and glycation reversing activity was studied in bovine serum albumin(BSA)-MGO model.Antioxidant properties were studied using total polyphenolic content,total flavonoid content,2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid,1,1-diphenyl-2-picrylhydrazine and ferric reducing antioxidant power in vitro antioxidant assays.Results:The results demonstrated significant(P<0.05)and dose dependant inhibition of BSA-MGO glycation[IC_(50):(164.30±4.85)μg/mL],potentiating of its reversing activity[EC_(50):(235.39±5.37)μg/mL]and marked antioxidant properties[total polyphenolic content:(119.55±9.97)mg gallic acid equivalents/g BTB;total flavonoid content:(6.04±1.26)mg quercetin equivalents/g BTB;2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid,1,1-diphenyl-2-picrylhydrazine and ferric reducing antioxidant power:(3.29±0.06),(1.95±0.15)and(1.31±0.19)mmol Trolox equivalents/g BTB,respectively].No correlations were observed between antioxidant activity and BSA-MGO glycation.Conclusions:The novel properties observed for Sri Lankan orange pekoe grade black tea indicate its usefulness as a supplementary beverage in managing MGO and advanced glycation end products related diseases and ailments.
文摘Determination of sex from the tibial dimensions has been attempted before in different populations.The formulae developed to determine sex of one population are not appropriate to be applied to another.Seven standard variables including the maximum length of tibia,proximal epiphyseal breadth,distal epiphyseal breadth,minimum circumference of shaft,anteroposterior diameter at nutrient foramen,transverse diameter at the nutrient foramen(TDNF),and circumference at the nutrient foramen obtained from 81 adult tibiae(56 male and 25 female)were analyzed to investigate the sexual dimorphism in the tibial dimensions to establish sex estimating formulae from the tibia in a contemporary Sri Lankan population.Results confirmed the existence of sexual dimorphism of the tibia.Discriminant functions obtained resulted in the classification accuracies ranging from 61.9%to 80.2%.The most dimorphic single parameter in males was the TDNF providing an accuracy of 92.9%,while in females,the minimum circumference of shaft provided an accuracy of 70.4%.The best multivariate equation utilizing two tibial dimensions resulted in an accuracy of 80.2%after cross‑validation.We envisage that sex estimating formulae established in this study for a contemporary Sri Lankan population will contribute toward the biological profiling and identification of unknown skeletal remains.
文摘Last week, Chinese Premier Wen Jiabao headed a delegation to New Zealand, which was part of his South Pacific trip, to discuss trade and a potential free trade area between the two countries. Ahead of the visit, Beijing Review spoke with New Zealand Ambassador to China Tony Browne on his country's trade relationship with China.
文摘'In my childhood,I read articles about Chinese master Monk Faxian’s travels in Sri Lanka and took interest in Chinese and its culture.Later,I knew Premier Zhou Enlai,who had been a friend of the Sri Lanka people and helped us when we were in dire need of outside support.In my view,China is like the big brother of Sri Lanka.'—Indrananda
