In the new educational and teaching environment,teaching work at each stage is continuously updated to ensure high-quality development.By applying new teaching ideas,educators can truly enter the growth space of stude...In the new educational and teaching environment,teaching work at each stage is continuously updated to ensure high-quality development.By applying new teaching ideas,educators can truly enter the growth space of students,enabling them to have in-depth experiences and insights,thereby continuously enhancing students’interest in learning.For junior high school physical education and health courses,during the actual reform process,it is more necessary to base on the methods mentioned in this article,deeply improve the curriculum system,connect with highquality development,promptly transform the roles of teachers and students,set clear teaching goals,and help students establish the awareness of lifelong physical education.This ensures the comprehensive physical and mental growth and progress of students and enhances the actual quality of classroom teaching.展开更多
As one of the most important teaching subjects in senior middle school, traditional senior middle school English teaching has limited the quality of teaching due to its limitations in teaching mode and resources. The ...As one of the most important teaching subjects in senior middle school, traditional senior middle school English teaching has limited the quality of teaching due to its limitations in teaching mode and resources. The era background of internet + has injected new vitality into senior middle school English teaching, and on the basis of the continuous introduction of information technology and related advanced information teaching methods, micro-course resources have gradually been applied in senior middle school English teaching. With its flexible mobile characteristics and diversified innovation advantages, it has brought more possibilities for the high-quality development of senior middle school English teaching. Based on this, this paper discusses and analyzes the application of micro-lesson resources in senior middle school English teaching in detail.展开更多
The title polymer was prepared from 5-diethylamino-3-thia-pentyl glycidyl ether anddiethylene glycol bisglycidyl ether via ring-opening copolymerization. It was found that thisreaction could be catalyzed by sodium, bu...The title polymer was prepared from 5-diethylamino-3-thia-pentyl glycidyl ether anddiethylene glycol bisglycidyl ether via ring-opening copolymerization. It was found that thisreaction could be catalyzed by sodium, but not Lewis acid. The obtained polymer can coordinatewith platinum compound, and the platinum complex is a new kind of catalyst for thehydrosilylation of olefins with triethoxysilane.展开更多
Capital structure is regarded as the combination of debt and equity firms used to finance operations and investments.The choice of capital structure significantly impacts a company’s cost of capital,profitability,and...Capital structure is regarded as the combination of debt and equity firms used to finance operations and investments.The choice of capital structure significantly impacts a company’s cost of capital,profitability,and risk profile.Among a series of factors that affect capital structure,this paper focuses on stock returns and market timing.In this review,an array of papers is analyzed to summarize what current research claims regarding the influence of stock returns and market timing on capital structure.This paper centers on the stock return and market timing theories and also discusses other theories like the trade-off theory,the pecking order theory,and the signaling theory.展开更多
At present, quality education is one of the important reform directions in all stages of education and teaching. In senior high school English teaching, the implementation of quality education must start from the core...At present, quality education is one of the important reform directions in all stages of education and teaching. In senior high school English teaching, the implementation of quality education must start from the core literacy of the subject and pay attention to the implementation of the goal of cultivating students core literacy. However, the reality is that under the influence of traditional educational ideas, senior high school English teaching often pays more attention to the cultivation of knowledge and skills, resulting in limited students writing level. Based on this, this paper discusses and analyzes the teaching of English writing in senior high schools in detail from the perspective of core literacy cultivation.展开更多
Perfluorooctane sulfonate（PFOS） and ZnO nanoparticles（nano-ZnO） are widely distributed in the environment.However,the potential toxicity of co-exposure to PFOS and nano-ZnO remains to be fully elucidated.The test ...Perfluorooctane sulfonate（PFOS） and ZnO nanoparticles（nano-ZnO） are widely distributed in the environment.However,the potential toxicity of co-exposure to PFOS and nano-ZnO remains to be fully elucidated.The test investigated the effects of co-exposure to PFOS and nano-ZnO on the hypothalamic–pituitary–thyroid（HPT） axis in zebrafish.Zebrafish embryos were exposed to a combination of PFOS（0.2,0.4,0.8 mg/L） and nano-ZnO（50 mg/L）from their early stages of life（0–14 days）.The whole-body content of TH and the expression of genes and proteins related to the HPT axis were analyzed.The co-exposure decreased the body length and increased the malformation rates compared with exposure to PFOS alone.Co-exposure also increased the triiodothyronine（T3） levels,whereas the thyroxine（T4）content remained unchanged.Compared with the exposure to PFOS alone,exposure to both PFOS（0.8 mg/L） and nano-ZnO（50 mg/L） significantly up-regulated the expression of corticotropin-releasing factor,sodium/iodidesymporter,iodothyronine deiodinases and thyroid receptors and significantly down-regulated the expression of thyroid-stimulating hormone,thyroglobulin（TG）,transthyretin（TTR） and thyroid receptors.The protein expression levels of TG and TTR were also significantly down-regulated in the co-exposure groups.In addition,the expression of the thyroid peroxidase gene was unchanged in all groups.The results demonstrated that PFOS and nano-ZnO co-exposure could cause more serious thyroid-disrupting effects in zebrafish than exposure to PFOS alone.Our results also provide insight into the mechanism of disruption of the thyroid status by PFOS and nano-ZnO.展开更多
This paper studies the strategies to improve students' thinking quality in junior high school English reading teaching, hoping to give some guidance to junior high school English teachers, so that students can con...This paper studies the strategies to improve students' thinking quality in junior high school English reading teaching, hoping to give some guidance to junior high school English teachers, so that students can continuously improve their thinking ability in class reading learning, and realize in-depth reading and overall improvement.展开更多
文摘In the new educational and teaching environment,teaching work at each stage is continuously updated to ensure high-quality development.By applying new teaching ideas,educators can truly enter the growth space of students,enabling them to have in-depth experiences and insights,thereby continuously enhancing students’interest in learning.For junior high school physical education and health courses,during the actual reform process,it is more necessary to base on the methods mentioned in this article,deeply improve the curriculum system,connect with highquality development,promptly transform the roles of teachers and students,set clear teaching goals,and help students establish the awareness of lifelong physical education.This ensures the comprehensive physical and mental growth and progress of students and enhances the actual quality of classroom teaching.
文摘As one of the most important teaching subjects in senior middle school, traditional senior middle school English teaching has limited the quality of teaching due to its limitations in teaching mode and resources. The era background of internet + has injected new vitality into senior middle school English teaching, and on the basis of the continuous introduction of information technology and related advanced information teaching methods, micro-course resources have gradually been applied in senior middle school English teaching. With its flexible mobile characteristics and diversified innovation advantages, it has brought more possibilities for the high-quality development of senior middle school English teaching. Based on this, this paper discusses and analyzes the application of micro-lesson resources in senior middle school English teaching in detail.
基金This work was supported by the National Natural Science Foundation of China
文摘The title polymer was prepared from 5-diethylamino-3-thia-pentyl glycidyl ether anddiethylene glycol bisglycidyl ether via ring-opening copolymerization. It was found that thisreaction could be catalyzed by sodium, but not Lewis acid. The obtained polymer can coordinatewith platinum compound, and the platinum complex is a new kind of catalyst for thehydrosilylation of olefins with triethoxysilane.
文摘Capital structure is regarded as the combination of debt and equity firms used to finance operations and investments.The choice of capital structure significantly impacts a company’s cost of capital,profitability,and risk profile.Among a series of factors that affect capital structure,this paper focuses on stock returns and market timing.In this review,an array of papers is analyzed to summarize what current research claims regarding the influence of stock returns and market timing on capital structure.This paper centers on the stock return and market timing theories and also discusses other theories like the trade-off theory,the pecking order theory,and the signaling theory.
文摘At present, quality education is one of the important reform directions in all stages of education and teaching. In senior high school English teaching, the implementation of quality education must start from the core literacy of the subject and pay attention to the implementation of the goal of cultivating students core literacy. However, the reality is that under the influence of traditional educational ideas, senior high school English teaching often pays more attention to the cultivation of knowledge and skills, resulting in limited students writing level. Based on this, this paper discusses and analyzes the teaching of English writing in senior high schools in detail from the perspective of core literacy cultivation.
基金supported by the State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology)(No.2013DX09)
文摘Perfluorooctane sulfonate（PFOS） and ZnO nanoparticles（nano-ZnO） are widely distributed in the environment.However,the potential toxicity of co-exposure to PFOS and nano-ZnO remains to be fully elucidated.The test investigated the effects of co-exposure to PFOS and nano-ZnO on the hypothalamic–pituitary–thyroid（HPT） axis in zebrafish.Zebrafish embryos were exposed to a combination of PFOS（0.2,0.4,0.8 mg/L） and nano-ZnO（50 mg/L）from their early stages of life（0–14 days）.The whole-body content of TH and the expression of genes and proteins related to the HPT axis were analyzed.The co-exposure decreased the body length and increased the malformation rates compared with exposure to PFOS alone.Co-exposure also increased the triiodothyronine（T3） levels,whereas the thyroxine（T4）content remained unchanged.Compared with the exposure to PFOS alone,exposure to both PFOS（0.8 mg/L） and nano-ZnO（50 mg/L） significantly up-regulated the expression of corticotropin-releasing factor,sodium/iodidesymporter,iodothyronine deiodinases and thyroid receptors and significantly down-regulated the expression of thyroid-stimulating hormone,thyroglobulin（TG）,transthyretin（TTR） and thyroid receptors.The protein expression levels of TG and TTR were also significantly down-regulated in the co-exposure groups.In addition,the expression of the thyroid peroxidase gene was unchanged in all groups.The results demonstrated that PFOS and nano-ZnO co-exposure could cause more serious thyroid-disrupting effects in zebrafish than exposure to PFOS alone.Our results also provide insight into the mechanism of disruption of the thyroid status by PFOS and nano-ZnO.
文摘This paper studies the strategies to improve students' thinking quality in junior high school English reading teaching, hoping to give some guidance to junior high school English teachers, so that students can continuously improve their thinking ability in class reading learning, and realize in-depth reading and overall improvement.
