The paper tentatively studies the function of the indirect speech act in Chinese cultural communication, namely, domestic communication. Two aspects are shown in this paper: communication between people of different ...The paper tentatively studies the function of the indirect speech act in Chinese cultural communication, namely, domestic communication. Two aspects are shown in this paper: communication between people of different social status, genders and casual relationships, and communication between people of same social status, genders and close relationships. Therefore, the study result can be concluded like this: whether the use of indirect speech act is successful or not always influences people's communication significantly.展开更多
The recyclable and stable ZnFe_(2)O_(4) small particle decorated one‐dimensional perylene diimide(PDI)S‐scheme heterojunction(1D PDI/ZnFe_(2)O_(4))is prepared by the hydrochloric acid‐mediated(HCl‐mediated)strateg...The recyclable and stable ZnFe_(2)O_(4) small particle decorated one‐dimensional perylene diimide(PDI)S‐scheme heterojunction(1D PDI/ZnFe_(2)O_(4))is prepared by the hydrochloric acid‐mediated(HCl‐mediated)strategy,interestingly,the morphology of the 1D PDI/ZnFe_(2)O_(4) can also be effectively regulated by HCl‐mediated process,the existence of HCl can regulate PDI into a uniform rod structure,while the co‐existence of HCl and PDI can limit ZnFe_(2)O_(4) to become the uniform small particles.More importantly,based on the 1D rod structure of PDI and the small size effect of ZnFe_(2)O_(4),carriers can migrate to the surface more easily,which can improve the photocatalytic activity.Meanwhile,due to the appropriate energy level structure,the S‐scheme heterojunction structure is formed between PDI and ZnFe_(2)O_(4),which eliminates meaningless photo‐generated charge carriers through recombination and introduces strong redox to further enhance the photodegradation effect,thereby,1D PDI/ZnFe_(2)O_(4) exhibits excellent photocatalytic ability,under the visible light irradiation,the degradation rate of tetracycline(TC)with 1D PDI/ZnFe_(2)O_(4)(66.67%)is 9.18 times that with PDI(7.26%)and 9.73 times that with ZnFe_(2)O_(4)(6.85%).This work proposes new ideas for the assembly of magnetic organic‐inorganic S‐scheme heterojunction photocatalysts.展开更多
Vocabulary in a language is influenced by and bears features of culture, so in languages, vocabulary has the greatest culture-loading capacity. This paper makes a contrastive study between English and Chinese cultural...Vocabulary in a language is influenced by and bears features of culture, so in languages, vocabulary has the greatest culture-loading capacity. This paper makes a contrastive study between English and Chinese culturally-loaded words, and tries to make clear how cultural disparities exist in English and Chinese vocabulary. Culturally-loaded words play a significant role in understanding the languages of different cultures, giving the readers insight into cultures. Learning and grasping the culturally-loaded words can promote the efficiency of vocabulary teaching and improve learners' competence in intercultural communication.展开更多
The photophysics of 3-dimethylamino-2-methyl-propenal (DMAMP) after excitation to the S2 (ππ^*) electronic state was studied using the resonance Raman spectroscopy and complete active space self-consistent fiel...The photophysics of 3-dimethylamino-2-methyl-propenal (DMAMP) after excitation to the S2 (ππ^*) electronic state was studied using the resonance Raman spectroscopy and complete active space self-consistent field method calculations. The transition barriers of the ground state tautomerization reactions between DMAMP and its three isomers were determined at B3LYP/6-311++G(d,p) level of theory. The vibrational spectra were assigned. The A- band resonance Raman spectra were obtained in acetonitrile with excitation wavelengths in resonance with the first intense absorption band to probe the structural dynamics of DMAMP. The B3LYP-TD computation was carried out to determine the relative A-band resonance Raman intensities of the fundamental modes, and the result indicated that the vibronic-coupling existed in Franck-Condon region. Complete active space self-consistent field (CASSCF) calculations were carried out to determine the excitation energies of the lower-lying singlet and triplet excited states, the conical intersection points and the intersystem crossing points. The A-band short-time structural dynamics and the corresponding decay dynamics of DMAMP were obtained by analysis of the resonance Raman intensity pattern and CASSCF computations. It was found that a sudden de-conjugation between C1=O6 and C2=C3 occurred at the Franck-Condon region of the S2(ππ^*) state, while the enhancement of the conjugation interaction between C3 and N(CH3)2, and between C1 and C2 evolutions shortly after the wavepacket leaves away the Pranck-Condon region via the excited state charge redistribution. The de-conjugation interaction between C1=O6 and C2=C3 made the rotation of C3=N(CH3)2 group around the C2-C3 bond much easier, while the enhanced conjugation between C1 and C2, and between C3 and N(CH3)2 made the rotation around the C1-C2 bond and C3-N5 more difficult. It was revealed that the initial structural dynamics of DMAMP was predominantly towards the CI-I(S2/S0) point, while the opportunities towards either CI-2(S2/S0) or CI-3(S2/S0) point were negligible. Two decay channels of DMAMP from S2,FC(ππ^*) to So or Tl,min via various CIs and ISCs were proposed.展开更多
Starting from presenting and analyzing some information gap activities during the previous teaching experience, this article has inferred the major roles of information gap activities. Some strategies to implement the...Starting from presenting and analyzing some information gap activities during the previous teaching experience, this article has inferred the major roles of information gap activities. Some strategies to implement the information gap activities are also recommended together with the functions of the instructors via these activities. What information gap activities can teach us in TESOL (teaching English for speakers of other languages) is that information gap activities contribute to setting up a climate of a mutual autonomous learning style both for the learners and the instructors, and these activities activate a diversity in the learning atmosphere.展开更多
Two spherically symmetric non-singular black hole solutions in Moiler tetrad theory of gravitation have been obtained. Although the two solutions have the same form of metric (spherically symmetric nonsingular black ...Two spherically symmetric non-singular black hole solutions in Moiler tetrad theory of gravitation have been obtained. Although the two solutions have the same form of metric (spherically symmetric nonsingular black hole), their energy contents are different. We use another method given by Gibbons and Hawking to calculate the energy content of these solutions. We also obtained different value of energy. Study the requirements of a satisfactory energymomentum complex given by Moiler we find that the second solution, which behaves as 1/√r, is not transformed as a four-vector under Lorentz transformation.展开更多
Industrial upgrading and transformation is important for China to transform its way of development. To accomplish this task effectively, we need to identify industries with potential comparative advantage. Using the l...Industrial upgrading and transformation is important for China to transform its way of development. To accomplish this task effectively, we need to identify industries with potential comparative advantage. Using the latest data on international trade of products, this paper verifies the premise of heterogeneity of product space of the evolutionary theory of comparative advantage, and analyses the evolution of product space of China and most countries in the world. The paper makes predictions on China "s industries with potential comparative advantage in near terms using the product space theory, and carries out thorough discussion on the evolutionary track of industries under different proximity thresholds. The basic conclusion is that even as China's number of industries with comparative advantage is larger than the global average, its industrial upgrading capacity is limited, as it has fewer industries with potential comparative advantage and lower sustainability in the current sectors than the world average. China faces a dilemma in the process of industrial upgrading, as a rapid upgrading would cause a shock to current economic growth, and a slow one would not maintain sustainable growth. With limited industrial upgrading capacity, the best structure adjustment and upgrading strategy is to give full play to the advantage of China's industrial diversification and combination to achieve an inclusive upgrading.展开更多
Nowadays, multinational marriages are more and more widespread, especially between China and the West. However, a prevailing phenomenon is that due to the differences of China-West family values, it has caused irrecon...Nowadays, multinational marriages are more and more widespread, especially between China and the West. However, a prevailing phenomenon is that due to the differences of China-West family values, it has caused irreconcilable conflicts of culture, which undoubtedly becomes the stumbling block of cross-cultural communication. Pushing Hands (1991) is a typical movie reflecting the cultural conflicts of Sino-US families, from which we can see all kinds of inadaptations in family life caused by cultural differences. Combined with Pushing Hands, this paper compares the differences of Sino-US views on families and analyzes the causes for these differences. Such an analysis will reinforce the English learners' understanding of cultural differences and improve their ability of cross-cultural communication.展开更多
Human induced pluripotent stem (hiPS) cells are considered a potential source for the generation of insulin-producing pancreatic β-ceUs because of their differentiation capacity. In this study, we have developed a ...Human induced pluripotent stem (hiPS) cells are considered a potential source for the generation of insulin-producing pancreatic β-ceUs because of their differentiation capacity. In this study, we have developed a five-step xeno-free culture system to efficiently dif- ferentiate hiPS cells into insulin-producing cells in vitro. We found that a high NOGGIN concentration is crucial for specifically inducing the differentiation first into pancreatic and duodenal homeobox-1 (PDX1)-positive pancreatic progenitors and then into neurogenin 3 (NGN3)-expressing pancreatic endocrine progenitors, while suppressing the differentiation into hepatic or intestinal cells. We also found that a combination of 3-isobutyl-l-methylxanthine (IBMX), exendin-4, and nicotinamide was important for the differentiation into insulin single-positive cells that expressed various pancreatic β-cell markers. Most notably, the differentiated cells contained en- dogenous C-peptide pools that were released in response to various insulin secretagogues and high levels of glucose. Therefore, our results demonstrate the feasibility of generating hiPS-derived pancreatic β-ceUs under xeno-free conditions and highlight their poten- tial to treat patients with type I diabetes.展开更多
A ShadowNet-based communication mode was designed,and some related activities planned and carried out,for an experimental cooperative project between two universities in China and the US.The students' post-survey ...A ShadowNet-based communication mode was designed,and some related activities planned and carried out,for an experimental cooperative project between two universities in China and the US.The students' post-survey results from both parties were analyzed and compared and it appeared that the ShadowNet system helped the students improve the following:an awareness of cultural difference,an openness toward cultural diversity,and a deeper appreciation for the significance of cultural identity in language learning and teaching.It also facilitated some direct improvements in the language acquisition of the Chinese ESL learners and the teaching ability of their American counter-parts.展开更多
文摘The paper tentatively studies the function of the indirect speech act in Chinese cultural communication, namely, domestic communication. Two aspects are shown in this paper: communication between people of different social status, genders and casual relationships, and communication between people of same social status, genders and close relationships. Therefore, the study result can be concluded like this: whether the use of indirect speech act is successful or not always influences people's communication significantly.
文摘The recyclable and stable ZnFe_(2)O_(4) small particle decorated one‐dimensional perylene diimide(PDI)S‐scheme heterojunction(1D PDI/ZnFe_(2)O_(4))is prepared by the hydrochloric acid‐mediated(HCl‐mediated)strategy,interestingly,the morphology of the 1D PDI/ZnFe_(2)O_(4) can also be effectively regulated by HCl‐mediated process,the existence of HCl can regulate PDI into a uniform rod structure,while the co‐existence of HCl and PDI can limit ZnFe_(2)O_(4) to become the uniform small particles.More importantly,based on the 1D rod structure of PDI and the small size effect of ZnFe_(2)O_(4),carriers can migrate to the surface more easily,which can improve the photocatalytic activity.Meanwhile,due to the appropriate energy level structure,the S‐scheme heterojunction structure is formed between PDI and ZnFe_(2)O_(4),which eliminates meaningless photo‐generated charge carriers through recombination and introduces strong redox to further enhance the photodegradation effect,thereby,1D PDI/ZnFe_(2)O_(4) exhibits excellent photocatalytic ability,under the visible light irradiation,the degradation rate of tetracycline(TC)with 1D PDI/ZnFe_(2)O_(4)(66.67%)is 9.18 times that with PDI(7.26%)and 9.73 times that with ZnFe_(2)O_(4)(6.85%).This work proposes new ideas for the assembly of magnetic organic‐inorganic S‐scheme heterojunction photocatalysts.
文摘Vocabulary in a language is influenced by and bears features of culture, so in languages, vocabulary has the greatest culture-loading capacity. This paper makes a contrastive study between English and Chinese culturally-loaded words, and tries to make clear how cultural disparities exist in English and Chinese vocabulary. Culturally-loaded words play a significant role in understanding the languages of different cultures, giving the readers insight into cultures. Learning and grasping the culturally-loaded words can promote the efficiency of vocabulary teaching and improve learners' competence in intercultural communication.
基金ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (No.21033002 and No.21202032) and the National Basic Research Program of China (No.2013CB834604).
文摘The photophysics of 3-dimethylamino-2-methyl-propenal (DMAMP) after excitation to the S2 (ππ^*) electronic state was studied using the resonance Raman spectroscopy and complete active space self-consistent field method calculations. The transition barriers of the ground state tautomerization reactions between DMAMP and its three isomers were determined at B3LYP/6-311++G(d,p) level of theory. The vibrational spectra were assigned. The A- band resonance Raman spectra were obtained in acetonitrile with excitation wavelengths in resonance with the first intense absorption band to probe the structural dynamics of DMAMP. The B3LYP-TD computation was carried out to determine the relative A-band resonance Raman intensities of the fundamental modes, and the result indicated that the vibronic-coupling existed in Franck-Condon region. Complete active space self-consistent field (CASSCF) calculations were carried out to determine the excitation energies of the lower-lying singlet and triplet excited states, the conical intersection points and the intersystem crossing points. The A-band short-time structural dynamics and the corresponding decay dynamics of DMAMP were obtained by analysis of the resonance Raman intensity pattern and CASSCF computations. It was found that a sudden de-conjugation between C1=O6 and C2=C3 occurred at the Franck-Condon region of the S2(ππ^*) state, while the enhancement of the conjugation interaction between C3 and N(CH3)2, and between C1 and C2 evolutions shortly after the wavepacket leaves away the Pranck-Condon region via the excited state charge redistribution. The de-conjugation interaction between C1=O6 and C2=C3 made the rotation of C3=N(CH3)2 group around the C2-C3 bond much easier, while the enhanced conjugation between C1 and C2, and between C3 and N(CH3)2 made the rotation around the C1-C2 bond and C3-N5 more difficult. It was revealed that the initial structural dynamics of DMAMP was predominantly towards the CI-I(S2/S0) point, while the opportunities towards either CI-2(S2/S0) or CI-3(S2/S0) point were negligible. Two decay channels of DMAMP from S2,FC(ππ^*) to So or Tl,min via various CIs and ISCs were proposed.
文摘Starting from presenting and analyzing some information gap activities during the previous teaching experience, this article has inferred the major roles of information gap activities. Some strategies to implement the information gap activities are also recommended together with the functions of the instructors via these activities. What information gap activities can teach us in TESOL (teaching English for speakers of other languages) is that information gap activities contribute to setting up a climate of a mutual autonomous learning style both for the learners and the instructors, and these activities activate a diversity in the learning atmosphere.
文摘Two spherically symmetric non-singular black hole solutions in Moiler tetrad theory of gravitation have been obtained. Although the two solutions have the same form of metric (spherically symmetric nonsingular black hole), their energy contents are different. We use another method given by Gibbons and Hawking to calculate the energy content of these solutions. We also obtained different value of energy. Study the requirements of a satisfactory energymomentum complex given by Moiler we find that the second solution, which behaves as 1/√r, is not transformed as a four-vector under Lorentz transformation.
基金Studies on Monitoring and Risk Assessment of Industrial and Economic Operation, Innovation Project of the Chinese Academy of Social Sciences, Transformation Strategy of Industrial Competitive Advantage and Evolution of Global Division of Labor, Major Fund Program of National Natural Science Foundation of China (Grant No. 098-ZD035).
文摘Industrial upgrading and transformation is important for China to transform its way of development. To accomplish this task effectively, we need to identify industries with potential comparative advantage. Using the latest data on international trade of products, this paper verifies the premise of heterogeneity of product space of the evolutionary theory of comparative advantage, and analyses the evolution of product space of China and most countries in the world. The paper makes predictions on China "s industries with potential comparative advantage in near terms using the product space theory, and carries out thorough discussion on the evolutionary track of industries under different proximity thresholds. The basic conclusion is that even as China's number of industries with comparative advantage is larger than the global average, its industrial upgrading capacity is limited, as it has fewer industries with potential comparative advantage and lower sustainability in the current sectors than the world average. China faces a dilemma in the process of industrial upgrading, as a rapid upgrading would cause a shock to current economic growth, and a slow one would not maintain sustainable growth. With limited industrial upgrading capacity, the best structure adjustment and upgrading strategy is to give full play to the advantage of China's industrial diversification and combination to achieve an inclusive upgrading.
文摘Nowadays, multinational marriages are more and more widespread, especially between China and the West. However, a prevailing phenomenon is that due to the differences of China-West family values, it has caused irreconcilable conflicts of culture, which undoubtedly becomes the stumbling block of cross-cultural communication. Pushing Hands (1991) is a typical movie reflecting the cultural conflicts of Sino-US families, from which we can see all kinds of inadaptations in family life caused by cultural differences. Combined with Pushing Hands, this paper compares the differences of Sino-US views on families and analyzes the causes for these differences. Such an analysis will reinforce the English learners' understanding of cultural differences and improve their ability of cross-cultural communication.
文摘Human induced pluripotent stem (hiPS) cells are considered a potential source for the generation of insulin-producing pancreatic β-ceUs because of their differentiation capacity. In this study, we have developed a five-step xeno-free culture system to efficiently dif- ferentiate hiPS cells into insulin-producing cells in vitro. We found that a high NOGGIN concentration is crucial for specifically inducing the differentiation first into pancreatic and duodenal homeobox-1 (PDX1)-positive pancreatic progenitors and then into neurogenin 3 (NGN3)-expressing pancreatic endocrine progenitors, while suppressing the differentiation into hepatic or intestinal cells. We also found that a combination of 3-isobutyl-l-methylxanthine (IBMX), exendin-4, and nicotinamide was important for the differentiation into insulin single-positive cells that expressed various pancreatic β-cell markers. Most notably, the differentiated cells contained en- dogenous C-peptide pools that were released in response to various insulin secretagogues and high levels of glucose. Therefore, our results demonstrate the feasibility of generating hiPS-derived pancreatic β-ceUs under xeno-free conditions and highlight their poten- tial to treat patients with type I diabetes.
文摘A ShadowNet-based communication mode was designed,and some related activities planned and carried out,for an experimental cooperative project between two universities in China and the US.The students' post-survey results from both parties were analyzed and compared and it appeared that the ShadowNet system helped the students improve the following:an awareness of cultural difference,an openness toward cultural diversity,and a deeper appreciation for the significance of cultural identity in language learning and teaching.It also facilitated some direct improvements in the language acquisition of the Chinese ESL learners and the teaching ability of their American counter-parts.