Objective: To determine abundance, distribution and diversity of potential breeding container habitats of the dengue vectors in public places including schools, restaurants,mosques and parks in southwest areas of Pena...Objective: To determine abundance, distribution and diversity of potential breeding container habitats of the dengue vectors in public places including schools, restaurants,mosques and parks in southwest areas of Penang Island, Malaysia.Methods: Premises at restaurants, schools, parks and mosques were surveyed simultaneously and inspected visually for container habitats and production of immature mosquitoes from March 2015 to March 2016. Abundance(mean ± SE) of breeding containers between sites was compared using One-way ANOVA. Independent sample ttest was used to compare total number of Aedes albopictus(Ae. albopictus) and Aedes aegypti(Ae. aegypti) surveyed.Results: The surveyed locations yielded a total of 3 741 breeding containers and 19 537 immature mosquitoes from four areas. Concurrent artificial and natural containers produced 78.4% immature Ae. albopictus and 6.3% Ae. aegypti mosquitoes in wet season,with 14.2% Ae. albopictus and 1.1% Ae. aegypti mosquitoes in dry season. Artificial containers accounted for 98.1% of the total containers recorded, with restaurants being the most productive locations(8 012) and schools being the least productive(2 234).Conclusions: It was concluded that public places are good sources of potential container habitats of Aedes mosquitoes in Penang Island, Malaysia and Ae. albopictus has exclusively replaced the home-grown Ae. aegypti even in urban areas. Therefore, treatment of artificial containers in such locations is critical in Aedes mosquito control campaigns during dengue outbreaks.展开更多
[Objective]The research aimed to understand the levels of indoor air particles of PM_(10) and PM_(2.5)in public places in Chaoyang District of Beijing City,which will provide scientific basis for making health standar...[Objective]The research aimed to understand the levels of indoor air particles of PM_(10) and PM_(2.5)in public places in Chaoyang District of Beijing City,which will provide scientific basis for making health standards and policies and regulations of indoor air particulate matter in public places.[Method]In order to characterize indoor air quality of public places,shopping mall near the walking street,shopping mall near arterial traffic,barbecue style restaurant and eat hutch unicom Chinese restaurant were selected for this study.LD-3Claser measuring dust detector and Sidepak AM-510 artificial intelligence anti-explosion dust detector were used to test the levels of PM_(10) and PM_(2.5)in the air of the shopping malls and restaurants.The number of smoking customers and if smelling the smoke were recorded simultaneously.[Result]The average densities of PM_(10) and PM_(2.5)in the shopping mall near the walking street were noticeably lower than that near arterial traffic(P< 0.05).The highest level of PM_(2.5)at the barbecue style restaurant and eating hutch unicom Chinese restaurants were 1 090and666g/m^3.The average levels of PM_(10) at the barbecue style restaurant and eating hutch unicom restaurants were 286 and 399g/m3(P<0.05).[Conclusion]The indoor PM_(10) and PM_(2.5)concentrations were high in public places,especially in shopping mall near arterial traffic and restaurant.It should be enhanced to supervise indoor air in public places and establish the risk rating of indoor air quality to protect public health.展开更多
Swimming has become a popular sport for both young and old in China as it doesn't require complicated equipment and it is easy to get access to water. Even in winter, it is common to see people plunging into the i...Swimming has become a popular sport for both young and old in China as it doesn't require complicated equipment and it is easy to get access to water. Even in winter, it is common to see people plunging into the icy waters of a river or lake. But when some people do so without any clothing, controversy arises. This winter, in some places in Lanzhou, in northwest China's Gansu Province,展开更多
选注者言:人们在公开场合接吻,其脑袋朝什么方向倾斜?——这是一项科研的内容。初读之下,觉得是否有些无聊,再读就被其研究的精神所动。作为英语学习,本文的若干表达有必要记学。比如:文章主题句中的zero in,就值得注意。zero in的意思...选注者言:人们在公开场合接吻,其脑袋朝什么方向倾斜?——这是一项科研的内容。初读之下,觉得是否有些无聊,再读就被其研究的精神所动。作为英语学习,本文的若干表达有必要记学。比如:文章主题句中的zero in,就值得注意。zero in的意思是:to converge intently;close in(专心注意,迫近)。另如:The chil-dren zeroed in on the display of toys in the store window.(孩子们的注意力都集中在商店橱窗里陈列的玩具上。)此外。展开更多
基金Funded by a grant from Universiti Sains Malaysia(Grant No.1001/PBIOLOGI/811277)
文摘Objective: To determine abundance, distribution and diversity of potential breeding container habitats of the dengue vectors in public places including schools, restaurants,mosques and parks in southwest areas of Penang Island, Malaysia.Methods: Premises at restaurants, schools, parks and mosques were surveyed simultaneously and inspected visually for container habitats and production of immature mosquitoes from March 2015 to March 2016. Abundance(mean ± SE) of breeding containers between sites was compared using One-way ANOVA. Independent sample ttest was used to compare total number of Aedes albopictus(Ae. albopictus) and Aedes aegypti(Ae. aegypti) surveyed.Results: The surveyed locations yielded a total of 3 741 breeding containers and 19 537 immature mosquitoes from four areas. Concurrent artificial and natural containers produced 78.4% immature Ae. albopictus and 6.3% Ae. aegypti mosquitoes in wet season,with 14.2% Ae. albopictus and 1.1% Ae. aegypti mosquitoes in dry season. Artificial containers accounted for 98.1% of the total containers recorded, with restaurants being the most productive locations(8 012) and schools being the least productive(2 234).Conclusions: It was concluded that public places are good sources of potential container habitats of Aedes mosquitoes in Penang Island, Malaysia and Ae. albopictus has exclusively replaced the home-grown Ae. aegypti even in urban areas. Therefore, treatment of artificial containers in such locations is critical in Aedes mosquito control campaigns during dengue outbreaks.
文摘[Objective]The research aimed to understand the levels of indoor air particles of PM_(10) and PM_(2.5)in public places in Chaoyang District of Beijing City,which will provide scientific basis for making health standards and policies and regulations of indoor air particulate matter in public places.[Method]In order to characterize indoor air quality of public places,shopping mall near the walking street,shopping mall near arterial traffic,barbecue style restaurant and eat hutch unicom Chinese restaurant were selected for this study.LD-3Claser measuring dust detector and Sidepak AM-510 artificial intelligence anti-explosion dust detector were used to test the levels of PM_(10) and PM_(2.5)in the air of the shopping malls and restaurants.The number of smoking customers and if smelling the smoke were recorded simultaneously.[Result]The average densities of PM_(10) and PM_(2.5)in the shopping mall near the walking street were noticeably lower than that near arterial traffic(P< 0.05).The highest level of PM_(2.5)at the barbecue style restaurant and eating hutch unicom Chinese restaurants were 1 090and666g/m^3.The average levels of PM_(10) at the barbecue style restaurant and eating hutch unicom restaurants were 286 and 399g/m3(P<0.05).[Conclusion]The indoor PM_(10) and PM_(2.5)concentrations were high in public places,especially in shopping mall near arterial traffic and restaurant.It should be enhanced to supervise indoor air in public places and establish the risk rating of indoor air quality to protect public health.
文摘Swimming has become a popular sport for both young and old in China as it doesn't require complicated equipment and it is easy to get access to water. Even in winter, it is common to see people plunging into the icy waters of a river or lake. But when some people do so without any clothing, controversy arises. This winter, in some places in Lanzhou, in northwest China's Gansu Province,
文摘选注者言:人们在公开场合接吻,其脑袋朝什么方向倾斜?——这是一项科研的内容。初读之下,觉得是否有些无聊,再读就被其研究的精神所动。作为英语学习,本文的若干表达有必要记学。比如:文章主题句中的zero in,就值得注意。zero in的意思是:to converge intently;close in(专心注意,迫近)。另如:The chil-dren zeroed in on the display of toys in the store window.(孩子们的注意力都集中在商店橱窗里陈列的玩具上。)此外。
