The USA is one of the very developed countries with entrepreneurship education in colleges and universities.After more than half a century of development,it has reached a mature stage,and the formation of the concept ...The USA is one of the very developed countries with entrepreneurship education in colleges and universities.After more than half a century of development,it has reached a mature stage,and the formation of the concept of entrepreneurial education has advanced.In this paper, through the analysis of entrepreneurship education thought by Jeffrey Timmons as the representative of the America University entrepreneurship education idea, it finds out the Puritan culture factors,in order to better understand the basis and provides the reference of college enterprise education in China.展开更多
Over the past few years, vampire genre has populated young adult （YA） literature. YA literature can be defined as narratives about the individual growth and maturation of adolescent protagonist. Adolescence is the b...Over the past few years, vampire genre has populated young adult （YA） literature. YA literature can be defined as narratives about the individual growth and maturation of adolescent protagonist. Adolescence is the bridging process of growing from childhood to adulthood. Furthermore, it is a turbulent time of rapid physical growth and sexual development. It also creates a critical phase in the formation of identity. In this paper, the author shall identify the ways in which representation of adolescence in an American contemporary young adult novel, Anderson＇s Thirsty （2008）, reflects and shapes the maturation of its young protagonist. The author argues that the transformation of vampire in the novel works as a metaphor for the various changes and maturation process experienced by the protagonist in the novel. Furthermore, the author＇s discussion will be preceded by a short history of vampire narrative. The author＇s analysis is supported by psychological theories of adolescence and socio-cultural approach which focuses on the ambiguities of adolescents＇ identity. Moreover, this paper alludes a psychoanalytic reading of the symbolism of the vampire which refers to Freud＇s notions of libido and death drive The conclusion of this paper is that Anderson＇s Thirsty is a paranormal novel which positions the implied readers to understand the trials of an adolescent protagonist during his difficult time of transition from childhood to adulthood.展开更多
In vitro maturation(IVM), the maturation in culture of immature oocytes, has been used in clinic for more than 20 years.Although IVM has the specific advantages of low cost and minor side effects over controlled ovari...In vitro maturation(IVM), the maturation in culture of immature oocytes, has been used in clinic for more than 20 years.Although IVM has the specific advantages of low cost and minor side effects over controlled ovarian stimulation, the prevalence of IVM is less than 1% of routine in vitro fertilization and embryo transfer techniques in many reproductive centers. In this review, we searched the MEDLINE database for all full texts and/or abstract articles published in English with content related to oocyte IVM mainly between 2000 and 2016. Many different aspects of the IVM method may influence oocyte potential,including priming, gonadotrophin, growth factors, and culture times. The culture conditions of IVM result in alterations in the oocyte or cumulus cell transcriptome that are not observed under in vivo culture conditions. Additionally, epigenetic modifications, such as DNA methylation or acetylation, are also different between in vitro and in vivo cultured oocytes. In sum,current IVM technique is still not popular and requires more systematic and intensive research to improve its effects and applications. This review will help point our problems, supply evidence or clues for future improving IVM technique, thus assist patients for fertility treatment or preservation as an additional option.展开更多
文摘The USA is one of the very developed countries with entrepreneurship education in colleges and universities.After more than half a century of development,it has reached a mature stage,and the formation of the concept of entrepreneurial education has advanced.In this paper, through the analysis of entrepreneurship education thought by Jeffrey Timmons as the representative of the America University entrepreneurship education idea, it finds out the Puritan culture factors,in order to better understand the basis and provides the reference of college enterprise education in China.
文摘Over the past few years, vampire genre has populated young adult （YA） literature. YA literature can be defined as narratives about the individual growth and maturation of adolescent protagonist. Adolescence is the bridging process of growing from childhood to adulthood. Furthermore, it is a turbulent time of rapid physical growth and sexual development. It also creates a critical phase in the formation of identity. In this paper, the author shall identify the ways in which representation of adolescence in an American contemporary young adult novel, Anderson＇s Thirsty （2008）, reflects and shapes the maturation of its young protagonist. The author argues that the transformation of vampire in the novel works as a metaphor for the various changes and maturation process experienced by the protagonist in the novel. Furthermore, the author＇s discussion will be preceded by a short history of vampire narrative. The author＇s analysis is supported by psychological theories of adolescence and socio-cultural approach which focuses on the ambiguities of adolescents＇ identity. Moreover, this paper alludes a psychoanalytic reading of the symbolism of the vampire which refers to Freud＇s notions of libido and death drive The conclusion of this paper is that Anderson＇s Thirsty is a paranormal novel which positions the implied readers to understand the trials of an adolescent protagonist during his difficult time of transition from childhood to adulthood.
基金supported by the National Natural Science Foundation of China(81300456)the Joint Research Fund for Overseas Natural Science of China(31429004)
文摘In vitro maturation(IVM), the maturation in culture of immature oocytes, has been used in clinic for more than 20 years.Although IVM has the specific advantages of low cost and minor side effects over controlled ovarian stimulation, the prevalence of IVM is less than 1% of routine in vitro fertilization and embryo transfer techniques in many reproductive centers. In this review, we searched the MEDLINE database for all full texts and/or abstract articles published in English with content related to oocyte IVM mainly between 2000 and 2016. Many different aspects of the IVM method may influence oocyte potential,including priming, gonadotrophin, growth factors, and culture times. The culture conditions of IVM result in alterations in the oocyte or cumulus cell transcriptome that are not observed under in vivo culture conditions. Additionally, epigenetic modifications, such as DNA methylation or acetylation, are also different between in vitro and in vivo cultured oocytes. In sum,current IVM technique is still not popular and requires more systematic and intensive research to improve its effects and applications. This review will help point our problems, supply evidence or clues for future improving IVM technique, thus assist patients for fertility treatment or preservation as an additional option.
