Glaciecola polaris strain ARK149, a Gram-negative bacterium from Arctic seas, was used to derive lipopolysaccharide （LPS）, and the effect of the LPS inducing some innate immunity parameters was investigated in Japan...Glaciecola polaris strain ARK149, a Gram-negative bacterium from Arctic seas, was used to derive lipopolysaccharide （LPS）, and the effect of the LPS inducing some innate immunity parameters was investigated in Japanese sea bass, Lateolabrax japonicus. The results showed that the LPS could enhance the phagocytosis activity, lysozyme activity, and bacteriolytic activity in L.japonicus, significantly （P〈0.05） at 1, 7, 14, 21, 28, and 35 d after LPS-injection. The indexes of three parameters increased to the peak of value at 28th d post LPS-injection. Moreover, RT-PCR analysis suggested that LPS significantly up-regulated the expression of both IL-8 and hepcidin in several tissues. These data suggest that the LPS extracted from Glaciecola polaris strain ARK149 can induce innate immunity in L. japonicus.展开更多
In this paper we introduce methods for approximating local standard time in the Northern Hemisphere using Polaris and the Big Dipper as well as alternative reference stars, and describe in detail how to construct a de...In this paper we introduce methods for approximating local standard time in the Northern Hemisphere using Polaris and the Big Dipper as well as alternative reference stars, and describe in detail how to construct a device we call a dipperclock to facilitate this process. An alternative method which does not require a dipperclock is also discussed. Ways of constructing dipperclocks which glow in the dark are presented. The accuracy of dipperclocks is examined, both theoretically and through field testing. A java program is provided for creating dipperclocks customized to a particular year-long time period and place to get improved accuracy. Basic astronomical definitions and justifications of the results are provided. We also discuss the use of dipperclocks to find longitude and latitude.展开更多
“Hichki”is a film focusing on the problems of teachers and students in India’s real society.For the 14 children of Class 9F who are scorned by Indian society,Nina’s appearance is like a polar star,which illuminate...“Hichki”is a film focusing on the problems of teachers and students in India’s real society.For the 14 children of Class 9F who are scorned by Indian society,Nina’s appearance is like a polar star,which illuminates their lives.After the film was released,the image of teacher Nina’s educator has aroused a lot of thinking and reflection in today’s social education.It is pointed out that only when teachers assume their own strong sense of mission and responsibility,have a kind heart,treat every student fairly,make good use of the advantages of students to stimulate learning motivation,and have the ability to teach according to their aptitude and enjoy teaching,can they become the“Polar Star”on the road of children’s life.展开更多
基金supported by a grant(2008C22059) from Zhejiang Science and Technology Department,Chinaa grant[(2008)39] from Ningbo Ocean and Fishery Bureau and International S&T Cooperation Program of China(2007DFA21300)
文摘Glaciecola polaris strain ARK149, a Gram-negative bacterium from Arctic seas, was used to derive lipopolysaccharide （LPS）, and the effect of the LPS inducing some innate immunity parameters was investigated in Japanese sea bass, Lateolabrax japonicus. The results showed that the LPS could enhance the phagocytosis activity, lysozyme activity, and bacteriolytic activity in L.japonicus, significantly （P〈0.05） at 1, 7, 14, 21, 28, and 35 d after LPS-injection. The indexes of three parameters increased to the peak of value at 28th d post LPS-injection. Moreover, RT-PCR analysis suggested that LPS significantly up-regulated the expression of both IL-8 and hepcidin in several tissues. These data suggest that the LPS extracted from Glaciecola polaris strain ARK149 can induce innate immunity in L. japonicus.
文摘In this paper we introduce methods for approximating local standard time in the Northern Hemisphere using Polaris and the Big Dipper as well as alternative reference stars, and describe in detail how to construct a device we call a dipperclock to facilitate this process. An alternative method which does not require a dipperclock is also discussed. Ways of constructing dipperclocks which glow in the dark are presented. The accuracy of dipperclocks is examined, both theoretically and through field testing. A java program is provided for creating dipperclocks customized to a particular year-long time period and place to get improved accuracy. Basic astronomical definitions and justifications of the results are provided. We also discuss the use of dipperclocks to find longitude and latitude.
文摘“Hichki”is a film focusing on the problems of teachers and students in India’s real society.For the 14 children of Class 9F who are scorned by Indian society,Nina’s appearance is like a polar star,which illuminates their lives.After the film was released,the image of teacher Nina’s educator has aroused a lot of thinking and reflection in today’s social education.It is pointed out that only when teachers assume their own strong sense of mission and responsibility,have a kind heart,treat every student fairly,make good use of the advantages of students to stimulate learning motivation,and have the ability to teach according to their aptitude and enjoy teaching,can they become the“Polar Star”on the road of children’s life.
