以丙烯酰胺(AM)、丙烯酸(AA)、含双键谷氨酸螯合剂(CH-3)为原料,通过反相乳液聚合法制备了一种聚丙烯酰胺类聚合物p(AM/AA/CH-3)。采用FTIR、^(1)HNMR、SEM及激光粒度分布仪对其结构进行了表征,并评价了其流变性能。结果表明,聚合物已...以丙烯酰胺(AM)、丙烯酸(AA)、含双键谷氨酸螯合剂(CH-3)为原料,通过反相乳液聚合法制备了一种聚丙烯酰胺类聚合物p(AM/AA/CH-3)。采用FTIR、^(1)HNMR、SEM及激光粒度分布仪对其结构进行了表征,并评价了其流变性能。结果表明,聚合物已成功合成,其粒径分布集中且均匀,可与盐离子形成更加致密规则的结构。聚合物在盐水中存在应力环;质量分数为0.8%的p(AM/AA/CH-3)聚合物水溶液表现出较好的耐温性能;在质量浓度为20000 mg/L的NaCl和CaCl_(2)溶液中,质量分数为0.8%的p(AM/AA/CH-3)聚合物溶液在140℃下剪切1 h后的黏度分别为70.53和53.84 m Pa·s,体系具有良好的耐温耐剪切性。聚合物在盐溶液中表现为弹性体,增强了聚合物分子间作用力,因而形成更加致密复杂的空间网络结构,聚合物弹性增大。展开更多
Recent years have witnessed the popularity of desert tourism as a fashion tourism product in the 21^(st) century along with the increasing demand for personalized tourism for tourists. The academic community is paying...Recent years have witnessed the popularity of desert tourism as a fashion tourism product in the 21^(st) century along with the increasing demand for personalized tourism for tourists. The academic community is paying growing attention to desert tourism research, but there is little research on the perception of tourists about the image of desert tourism destinations in Inner Mongolia. With Inner Mongolia as the object of the study, this paper analyzed the image perception and evaluation of tourists for Inner Mongolia desert tourism destinations from three aspects of cognitive image perception, emotional image perception, and overall image perception according to the "cognitive-emotional" model, with the help of relevant network text analysis methods, and proposed some suggestions for the future development of desert tourism destinations in Inner Mongolia from the aspects of increasing desert humanities tourism resources and product development, improving scenic spot management ability, improving tourism service quality, improving tourism infrastructure construction and strengthening environmental protection. It is hoped that this paper can provide a reference for improving the image of Inner Mongolia desert tourism destinations and improving the tourist experience.展开更多
This paper explored the background of the leisure boom among the literati in the late Ming Dynasty from the aspects of politics, economy, ideology and social environment, and elaborated the leisure styles of the liter...This paper explored the background of the leisure boom among the literati in the late Ming Dynasty from the aspects of politics, economy, ideology and social environment, and elaborated the leisure styles of the literati in terms of enjoying a sightseeing tour, sampling wine and tea, appreciating and collecting calligraphy and painting works, favoring theatergoing, indulging in dallying with prostitutes, practicing meditation, and building gardens, and analyzed the influence of their leisure styles on the painting and calligraphy art, drama, literary creation, garden construction and other aspects of the society at that time. It is hoped that this paper can provide a deep understanding of social politics, economy, ideology and culture in the late Ming Dynasty and a reference for the development of the current leisure tourism.展开更多
文摘以丙烯酰胺(AM)、丙烯酸(AA)、含双键谷氨酸螯合剂(CH-3)为原料,通过反相乳液聚合法制备了一种聚丙烯酰胺类聚合物p(AM/AA/CH-3)。采用FTIR、^(1)HNMR、SEM及激光粒度分布仪对其结构进行了表征,并评价了其流变性能。结果表明,聚合物已成功合成,其粒径分布集中且均匀,可与盐离子形成更加致密规则的结构。聚合物在盐水中存在应力环;质量分数为0.8%的p(AM/AA/CH-3)聚合物水溶液表现出较好的耐温性能;在质量浓度为20000 mg/L的NaCl和CaCl_(2)溶液中,质量分数为0.8%的p(AM/AA/CH-3)聚合物溶液在140℃下剪切1 h后的黏度分别为70.53和53.84 m Pa·s,体系具有良好的耐温耐剪切性。聚合物在盐溶液中表现为弹性体,增强了聚合物分子间作用力,因而形成更加致密复杂的空间网络结构,聚合物弹性增大。
基金Sponsored by National Social Science Fund of China(18BGL148)Humanities and Social Sciences Research Project of the Ministry of Education(18XJC850004)Scientific Research Project of Higher Education Funded by the Education Department of Inner Mongolia(NJSY17020)
文摘Recent years have witnessed the popularity of desert tourism as a fashion tourism product in the 21^(st) century along with the increasing demand for personalized tourism for tourists. The academic community is paying growing attention to desert tourism research, but there is little research on the perception of tourists about the image of desert tourism destinations in Inner Mongolia. With Inner Mongolia as the object of the study, this paper analyzed the image perception and evaluation of tourists for Inner Mongolia desert tourism destinations from three aspects of cognitive image perception, emotional image perception, and overall image perception according to the "cognitive-emotional" model, with the help of relevant network text analysis methods, and proposed some suggestions for the future development of desert tourism destinations in Inner Mongolia from the aspects of increasing desert humanities tourism resources and product development, improving scenic spot management ability, improving tourism service quality, improving tourism infrastructure construction and strengthening environmental protection. It is hoped that this paper can provide a reference for improving the image of Inner Mongolia desert tourism destinations and improving the tourist experience.
文摘This paper explored the background of the leisure boom among the literati in the late Ming Dynasty from the aspects of politics, economy, ideology and social environment, and elaborated the leisure styles of the literati in terms of enjoying a sightseeing tour, sampling wine and tea, appreciating and collecting calligraphy and painting works, favoring theatergoing, indulging in dallying with prostitutes, practicing meditation, and building gardens, and analyzed the influence of their leisure styles on the painting and calligraphy art, drama, literary creation, garden construction and other aspects of the society at that time. It is hoped that this paper can provide a deep understanding of social politics, economy, ideology and culture in the late Ming Dynasty and a reference for the development of the current leisure tourism.
