The Henry’s law constant of volatiles in polymer systems is a crucial parameter reflecting the gas-liquid equilibrium,which is very important for devolatilization.In this research,polyolefin elastomer(POE)-cyclohexan...The Henry’s law constant of volatiles in polymer systems is a crucial parameter reflecting the gas-liquid equilibrium,which is very important for devolatilization.In this research,polyolefin elastomer(POE)-cyclohexane and polydimethylsiloxane(PDMS)-hexane systems were studied,and the Henry’s law constant was obtained by measuring the gas phase equilibrium partial pressure when polymer solutions containing different mass fractions of volatiles reached a saturated state.The effects of temperature,type of volatiles,and polymer viscosity on the gas phase equilibrium partial pressure and Henry’s law constant of the volatiles were investigated.The results indicate that,with the increase of temperature and polymer viscosity,the gas phase equilibrium partial pressure and Henry’s law constant of volatiles increase.As temperature increases,the solubility of gas in liquid decreases.The relationship between the Henry’s law constant and temperature is consistent with the Arrhenius law.In the PDMS-hexane system,the gas phase equilibrium partial pressure and Henry’s law constant of n-hexane are higher than those of cyclohexane.The obtained Henry’s law constants can be used as a reference for perfecting the devolatilization process and improving the devolatilization effect.展开更多
Design briefing plays a crucial role in the success of a building project.Some new methods of design briefing have been developed recently,but rarely integrated with Building Information Modelling(BIM).This paper pres...Design briefing plays a crucial role in the success of a building project.Some new methods of design briefing have been developed recently,but rarely integrated with Building Information Modelling(BIM).This paper presents a feasibility study of implementing BIM in the design briefing and develop a conceptual system framework to present possible functionalities and processes of BIM-based design briefing.This study started with a series of the interviews with professionals in the industry as well as academics in various universities in the UK.A thematic analysis has been carried out to analyse the interview transcripts.The development of conceptual system framework following the software engineering method presents the major functional modules and relevant datasets of a BIM-based design briefing system which identified in the interviews.The paper also discusses on both the benefit and the potential difficulties of BIM-based design briefing,although 93%of the interviewees agree that BIM technology should be adopted in design briefing to improve the quality&process of design and to involve other stakeholders and POE data in design briefing.展开更多
《乌鸦》是19世纪美国浪漫主义时期杰出诗人埃德加·爱伦·坡(Edgar Allan Poe)的经典作品。目前学界对《乌鸦》的研究主要从意象、音韵、文学性、忧郁气质等方面展开,尚未从文学文体学的视角探究其情感表征。文学文体学指通过...《乌鸦》是19世纪美国浪漫主义时期杰出诗人埃德加·爱伦·坡(Edgar Allan Poe)的经典作品。目前学界对《乌鸦》的研究主要从意象、音韵、文学性、忧郁气质等方面展开,尚未从文学文体学的视角探究其情感表征。文学文体学指通过分析文学文本中语言形式,阐释文学文本的艺术价值、思想情感与美学意蕴。作为文学研究的重要视角,情感表征研究是理解与阐释文学作品的关键。基于文学文体学的细致分析,从语音、词汇、句法等维度的前景化探讨诗人深邃的内心世界:对亡妻的绵长思念与无尽眷恋,对现实困境无助与彷徨的生命体验,对未来的迷茫与焦虑的情感表达。文学文体学视角下《乌鸦》的情感表征研究将进一步推动爱伦·坡在国内的研究。展开更多
基金Polyolefin Elastomer Technology Development project(2020B-2619).
文摘The Henry’s law constant of volatiles in polymer systems is a crucial parameter reflecting the gas-liquid equilibrium,which is very important for devolatilization.In this research,polyolefin elastomer(POE)-cyclohexane and polydimethylsiloxane(PDMS)-hexane systems were studied,and the Henry’s law constant was obtained by measuring the gas phase equilibrium partial pressure when polymer solutions containing different mass fractions of volatiles reached a saturated state.The effects of temperature,type of volatiles,and polymer viscosity on the gas phase equilibrium partial pressure and Henry’s law constant of the volatiles were investigated.The results indicate that,with the increase of temperature and polymer viscosity,the gas phase equilibrium partial pressure and Henry’s law constant of volatiles increase.As temperature increases,the solubility of gas in liquid decreases.The relationship between the Henry’s law constant and temperature is consistent with the Arrhenius law.In the PDMS-hexane system,the gas phase equilibrium partial pressure and Henry’s law constant of n-hexane are higher than those of cyclohexane.The obtained Henry’s law constants can be used as a reference for perfecting the devolatilization process and improving the devolatilization effect.
文摘Design briefing plays a crucial role in the success of a building project.Some new methods of design briefing have been developed recently,but rarely integrated with Building Information Modelling(BIM).This paper presents a feasibility study of implementing BIM in the design briefing and develop a conceptual system framework to present possible functionalities and processes of BIM-based design briefing.This study started with a series of the interviews with professionals in the industry as well as academics in various universities in the UK.A thematic analysis has been carried out to analyse the interview transcripts.The development of conceptual system framework following the software engineering method presents the major functional modules and relevant datasets of a BIM-based design briefing system which identified in the interviews.The paper also discusses on both the benefit and the potential difficulties of BIM-based design briefing,although 93%of the interviewees agree that BIM technology should be adopted in design briefing to improve the quality&process of design and to involve other stakeholders and POE data in design briefing.
文摘《乌鸦》是19世纪美国浪漫主义时期杰出诗人埃德加·爱伦·坡(Edgar Allan Poe)的经典作品。目前学界对《乌鸦》的研究主要从意象、音韵、文学性、忧郁气质等方面展开,尚未从文学文体学的视角探究其情感表征。文学文体学指通过分析文学文本中语言形式,阐释文学文本的艺术价值、思想情感与美学意蕴。作为文学研究的重要视角,情感表征研究是理解与阐释文学作品的关键。基于文学文体学的细致分析,从语音、词汇、句法等维度的前景化探讨诗人深邃的内心世界:对亡妻的绵长思念与无尽眷恋,对现实困境无助与彷徨的生命体验,对未来的迷茫与焦虑的情感表达。文学文体学视角下《乌鸦》的情感表征研究将进一步推动爱伦·坡在国内的研究。
