Seasonal variations in the biochemical composition and the reproductive cycle of pen shell Atrina pectinata in Bohai Sea were investigated from May 2013 to April 2014. Histological analysis indicated that the reproduc...Seasonal variations in the biochemical composition and the reproductive cycle of pen shell Atrina pectinata in Bohai Sea were investigated from May 2013 to April 2014. Histological analysis indicated that the reproductive cycle of A. pectinata can be divided into two phases, inactive stage and gametogenesis, which were equally and significantly influenced by seawater temperature and food availability. Gametogenesis began in late autumn(October), and completed in June and July. Spawning took place in August, coinciding with the highest water temperature and the richest phytoplankton. The significantly high glycogen content in adductor muscles sustained throughout the late active and ripeness stages, but plummeted during spawning and inactive stages. The protein content in female gonads exhibited a synchronous increase along with oocyte diameter and lipid content, suggesting that the female gonads could accumulate protein and lipid for vitelline in A. pectinata. Furthermore, the RNA/DNA ratio was found to be a useful index to indicate the level of gonad maturation in both males and females. The findings of the present study provided a foundation for the fishery resource administration and the aquaculture development of this species.展开更多
In analysing a speech genre, genre analysis is applied. Genre analysis is a recent trend in discourse analysis. It combines socio-cultural and psycholinguistic aspect of text construction and interpretation. This anal...In analysing a speech genre, genre analysis is applied. Genre analysis is a recent trend in discourse analysis. It combines socio-cultural and psycholinguistic aspect of text construction and interpretation. This analysis aims to show what extent surface linguistic forms align with given standardized communicative events. To construct a text, a speaker should master its schematic structure. The schematic structure consists of organizing the rhetoric. It covers the macro-stages which can be classified into introductory stage, body stage, and concluding stage. The rhetorical organization/structure （micro moves） of a speech genre includes ＂opening marker＂, ＂gambit＂, ＂narration＂, and ＂marker＂ in the introductory stage; ＂claim＂, ＂confutation＂, ＂confirmation＂, and ＂concession＂ in the body stage; ＂marker＂, ＂appeal/recommendation＂, and a closing in the body stage. By studying the schematic structure, it can be recognized how the students construct the genre, whether they follow the linear pattern offered or their construction of speech is influenced by their native cultural way of thinking. In sequencing the micro moves, the students followed the sequence offered in the framework of speech genre. Although there was a slight difference in sequencing the moves, in general the students have conformed to the proposed sequence. The variety of sequencing the moves was prompted by the native language and cultural background （Javanese and Chinese）. Since rhetorical organization varies from culture to culotte, it can be tolerated that the students have a variety in sequencing the moves.展开更多
This paper makes the case that education aimed at Hispanic or Latino children in the United States needs to recognize both their linguistic and cultural roots （raices） as well as the educational wings （alas）. The ...This paper makes the case that education aimed at Hispanic or Latino children in the United States needs to recognize both their linguistic and cultural roots （raices） as well as the educational wings （alas）. The reason the author believes dual language programs could benefit all is due to the fact that if done properly, it should promote bilingualism, respect, and equity for all students in the school. Dual language programs are relatively new in the United States. These programs aim to create bilingual, bicultural students without sacrificing these students＇ success in school or beyond. The goals of dual language are to provide high-quality instruction for language-minority students and to provide instruction in a second language for English-speaking students. Schools teach children through content, with teachers adapting their instruction to ensure children＇s comprehension and using content lessons to convey vocabulary and language structure. Striving for a balance of half language minority students and half English speaking students in each classroom, dual language programs also aim to teach cross-cultural awareness. Programs vary in terms of the amount of time they devote to each language, which grade levels they serve, how much structure they impose for the division of language and curriculum, and what populations they serve.展开更多
基金supported by grants from the Scientific and Technical Supporting Program (No. 2011BAD13B01)the National Marine Public Welfare Research Program (No. 201305005)Doctoral Program of Ministry of Education of China (No. 20130132110009)
文摘Seasonal variations in the biochemical composition and the reproductive cycle of pen shell Atrina pectinata in Bohai Sea were investigated from May 2013 to April 2014. Histological analysis indicated that the reproductive cycle of A. pectinata can be divided into two phases, inactive stage and gametogenesis, which were equally and significantly influenced by seawater temperature and food availability. Gametogenesis began in late autumn(October), and completed in June and July. Spawning took place in August, coinciding with the highest water temperature and the richest phytoplankton. The significantly high glycogen content in adductor muscles sustained throughout the late active and ripeness stages, but plummeted during spawning and inactive stages. The protein content in female gonads exhibited a synchronous increase along with oocyte diameter and lipid content, suggesting that the female gonads could accumulate protein and lipid for vitelline in A. pectinata. Furthermore, the RNA/DNA ratio was found to be a useful index to indicate the level of gonad maturation in both males and females. The findings of the present study provided a foundation for the fishery resource administration and the aquaculture development of this species.
文摘In analysing a speech genre, genre analysis is applied. Genre analysis is a recent trend in discourse analysis. It combines socio-cultural and psycholinguistic aspect of text construction and interpretation. This analysis aims to show what extent surface linguistic forms align with given standardized communicative events. To construct a text, a speaker should master its schematic structure. The schematic structure consists of organizing the rhetoric. It covers the macro-stages which can be classified into introductory stage, body stage, and concluding stage. The rhetorical organization/structure （micro moves） of a speech genre includes ＂opening marker＂, ＂gambit＂, ＂narration＂, and ＂marker＂ in the introductory stage; ＂claim＂, ＂confutation＂, ＂confirmation＂, and ＂concession＂ in the body stage; ＂marker＂, ＂appeal/recommendation＂, and a closing in the body stage. By studying the schematic structure, it can be recognized how the students construct the genre, whether they follow the linear pattern offered or their construction of speech is influenced by their native cultural way of thinking. In sequencing the micro moves, the students followed the sequence offered in the framework of speech genre. Although there was a slight difference in sequencing the moves, in general the students have conformed to the proposed sequence. The variety of sequencing the moves was prompted by the native language and cultural background （Javanese and Chinese）. Since rhetorical organization varies from culture to culotte, it can be tolerated that the students have a variety in sequencing the moves.
文摘This paper makes the case that education aimed at Hispanic or Latino children in the United States needs to recognize both their linguistic and cultural roots （raices） as well as the educational wings （alas）. The reason the author believes dual language programs could benefit all is due to the fact that if done properly, it should promote bilingualism, respect, and equity for all students in the school. Dual language programs are relatively new in the United States. These programs aim to create bilingual, bicultural students without sacrificing these students＇ success in school or beyond. The goals of dual language are to provide high-quality instruction for language-minority students and to provide instruction in a second language for English-speaking students. Schools teach children through content, with teachers adapting their instruction to ensure children＇s comprehension and using content lessons to convey vocabulary and language structure. Striving for a balance of half language minority students and half English speaking students in each classroom, dual language programs also aim to teach cross-cultural awareness. Programs vary in terms of the amount of time they devote to each language, which grade levels they serve, how much structure they impose for the division of language and curriculum, and what populations they serve.
