The experiments of one-stage semi-circular and two-stage semi-circular impinging stream drying as well as the vertical and semi-circular combined impinging stream drying were carried out. The velocity distribution and...The experiments of one-stage semi-circular and two-stage semi-circular impinging stream drying as well as the vertical and semi-circular combined impinging stream drying were carried out. The velocity distribution and the mean residence time of particles, and the influence of various factors on drying characteristics were studied. A mathematical model of granular material drying in a semi-circular impinging stream dryer was proposed, in which the flow characteristics as well as the heat and mass transfer mechanisms were considered. Reasonable numerical methods were used to solve the equations. Under various conditions, the calculated results agree well with the experimental data. The unsteady-state drying dynamic equation, as well as the variations of drying rate and moisture content versus time were obtained. The results indicate that constant drying rate period does not exist in a semi-circular impinging stream dryer. Appropriate semi-circular stage number and curvature radius, flow-rate ratio, air velocity, and higher inlet air temperature should be used for enhancing the drying process.展开更多
With the effect of the human trade doctrine in the international trade field, almost all the countries have paid more attention to the sustainable development of international trade. This article chose the export sust...With the effect of the human trade doctrine in the international trade field, almost all the countries have paid more attention to the sustainable development of international trade. This article chose the export sustainable development as the research object. On the basis of the analysis of the theoretical connotation of the export sustainable development, this article tried to establish an evaluation indices system and set up an evaluation model of the export sustainable development level, and finally made some empirical research on China. The result indicates that the comprehensive level of the export sustainable development in China showed a tendency to rise from 1985 to 2003 and the export sustainable development level of China in these years can be divided into four grades: excellent, good, moderate and poor. In most years, the social economic benefits of export was obtained at the cost of the deterioration of environment and the depletion of resources, and the economic profit of export did not increase with the enlargement of the export scale because of the deterioration of the terms of trade. Therefore, China should be careful about the problem of poverty accompanied by the increase of export.展开更多
In the present paper, the authors review recent advances in clinical and experimental studies on acupuncture treatment of cerebral hemorrhage(CH). Regarding clinical studies, the resuscitation-inducing needling maneuv...In the present paper, the authors review recent advances in clinical and experimental studies on acupuncture treatment of cerebral hemorrhage(CH). Regarding clinical studies, the resuscitation-inducing needling maneuver, and main points of Shuigou(水沟GV 26),Baihui(百会 GV 20) and scalp-points Motor Area(MS 6), Sensory Area(MS 7), etc. are often involved. Concerning experimental studies, the underlying mechanisms of acupuncture of GV-26+“Neiguan”(内关 PC 6), GV-20,GV-26+GV-20, etc. in improving acute CH are introduced. In a word, acupuncture therapy works well in improving clinical symptoms and signs of CH patients, and acupuncture stimulation induced ameilioration of cerebral blood flow, favorable modulation of some bioactive substances as excitatory and inhibitory amino acids, endothelin, CGRP, heat shock protein 70, etc. and neuro-endocrine-immune network may contribute to the effect of acupuncture on CH. In addition, acupuncture combined with medicine and earlier application of acupuncture therapy in the acute stage of CH are recommended in clinical practice.展开更多
In this paper, the author presents an overview of the development of CALL and understanding of CALL research in recent years; and then, indicates the trend of CALL research-AR and the research on AR-could be interpret...In this paper, the author presents an overview of the development of CALL and understanding of CALL research in recent years; and then, indicates the trend of CALL research-AR and the research on AR-could be interpreted as the research framework of CALL in China by introducing the four elements of AR-involvement, improvement, systematization and publicity.展开更多
AR (augmented reality) is a technology that adds information to the real world adding virtual elements to its visualization in real time. AR used in AECO (architectural, engineering, construction and operations) c...AR (augmented reality) is a technology that adds information to the real world adding virtual elements to its visualization in real time. AR used in AECO (architectural, engineering, construction and operations) can contribute in augmenting visualization during design, construction and operation of the buildings. This article presents a study that applies AR to building assessment with BIM (building information) model visualization. The use of AR on existing applications for smart phones and tablets is validated. AR proposed an adaptation of the method of POE (post-occupancy evaluation) subsidized. Traditional POE process model involves three phases: planning, conducting and applying. In order to incorporate AR, it is proposed a total restructuring of the planning phase, developing the research instruments in three steps: 3D modeling, model treatment and AR application development. It was observed that for POE studies, the 3D models are in large scale and need to be detailed for precise comparison. BIM models for facility management, representing building use situation, are of the highest level of detail. A balanced point between simplicity and representativeness was the solution adopted in this experiment for uploading and downloading performance issues. This article presents and discusses findings for the new proposition for the activity of research instruments development for the planning phase of POE with AR as well as initial tests with first results and difficulties faced.展开更多
Objective:: To study the main prognostic factors and significance of facial nerve decompression for facial paralysis in temporal bone fracture. Methods: The main relative prognostic factors of 64 patients with facial ...Objective:: To study the main prognostic factors and significance of facial nerve decompression for facial paralysis in temporal bone fracture. Methods: The main relative prognostic factors of 64 patients with facial paralysis were analyzed. An experimental model of facial paralysis was made. The expansion rates of facial nerve in the facial canal opening group and the facial canal non-opening group were measured and observed under electron microscope. Results: The main factors affecting the prognosis were facial nerve decompression and selection of surgery time. The expansion rate of facial nerve in the facial canal opening group was significantly higher than that of the facial canal non-opening group (t= 7.53 , P< 0.01 ). The injury degree of the nerve fiber in the facial canal non-opening group was severe. Conclusions: Early facial nerve decompression is beneficial to restoration of the facial nerve function.展开更多
基金Supported by the State Key Fundamental Research Plan of China (No. G20000263) and the Director Foundation of Institute of Engineering Thermophysics, Chinese Academy of Sciences.
文摘The experiments of one-stage semi-circular and two-stage semi-circular impinging stream drying as well as the vertical and semi-circular combined impinging stream drying were carried out. The velocity distribution and the mean residence time of particles, and the influence of various factors on drying characteristics were studied. A mathematical model of granular material drying in a semi-circular impinging stream dryer was proposed, in which the flow characteristics as well as the heat and mass transfer mechanisms were considered. Reasonable numerical methods were used to solve the equations. Under various conditions, the calculated results agree well with the experimental data. The unsteady-state drying dynamic equation, as well as the variations of drying rate and moisture content versus time were obtained. The results indicate that constant drying rate period does not exist in a semi-circular impinging stream dryer. Appropriate semi-circular stage number and curvature radius, flow-rate ratio, air velocity, and higher inlet air temperature should be used for enhancing the drying process.
基金assisted by the humanities and social sciences research Youth Fund Project of the Ministry of Education of China (Grant No. 06JC790008)
文摘With the effect of the human trade doctrine in the international trade field, almost all the countries have paid more attention to the sustainable development of international trade. This article chose the export sustainable development as the research object. On the basis of the analysis of the theoretical connotation of the export sustainable development, this article tried to establish an evaluation indices system and set up an evaluation model of the export sustainable development level, and finally made some empirical research on China. The result indicates that the comprehensive level of the export sustainable development in China showed a tendency to rise from 1985 to 2003 and the export sustainable development level of China in these years can be divided into four grades: excellent, good, moderate and poor. In most years, the social economic benefits of export was obtained at the cost of the deterioration of environment and the depletion of resources, and the economic profit of export did not increase with the enlargement of the export scale because of the deterioration of the terms of trade. Therefore, China should be careful about the problem of poverty accompanied by the increase of export.
文摘In the present paper, the authors review recent advances in clinical and experimental studies on acupuncture treatment of cerebral hemorrhage(CH). Regarding clinical studies, the resuscitation-inducing needling maneuver, and main points of Shuigou(水沟GV 26),Baihui(百会 GV 20) and scalp-points Motor Area(MS 6), Sensory Area(MS 7), etc. are often involved. Concerning experimental studies, the underlying mechanisms of acupuncture of GV-26+“Neiguan”(内关 PC 6), GV-20,GV-26+GV-20, etc. in improving acute CH are introduced. In a word, acupuncture therapy works well in improving clinical symptoms and signs of CH patients, and acupuncture stimulation induced ameilioration of cerebral blood flow, favorable modulation of some bioactive substances as excitatory and inhibitory amino acids, endothelin, CGRP, heat shock protein 70, etc. and neuro-endocrine-immune network may contribute to the effect of acupuncture on CH. In addition, acupuncture combined with medicine and earlier application of acupuncture therapy in the acute stage of CH are recommended in clinical practice.
文摘In this paper, the author presents an overview of the development of CALL and understanding of CALL research in recent years; and then, indicates the trend of CALL research-AR and the research on AR-could be interpreted as the research framework of CALL in China by introducing the four elements of AR-involvement, improvement, systematization and publicity.
文摘AR (augmented reality) is a technology that adds information to the real world adding virtual elements to its visualization in real time. AR used in AECO (architectural, engineering, construction and operations) can contribute in augmenting visualization during design, construction and operation of the buildings. This article presents a study that applies AR to building assessment with BIM (building information) model visualization. The use of AR on existing applications for smart phones and tablets is validated. AR proposed an adaptation of the method of POE (post-occupancy evaluation) subsidized. Traditional POE process model involves three phases: planning, conducting and applying. In order to incorporate AR, it is proposed a total restructuring of the planning phase, developing the research instruments in three steps: 3D modeling, model treatment and AR application development. It was observed that for POE studies, the 3D models are in large scale and need to be detailed for precise comparison. BIM models for facility management, representing building use situation, are of the highest level of detail. A balanced point between simplicity and representativeness was the solution adopted in this experiment for uploading and downloading performance issues. This article presents and discusses findings for the new proposition for the activity of research instruments development for the planning phase of POE with AR as well as initial tests with first results and difficulties faced.
文摘Objective:: To study the main prognostic factors and significance of facial nerve decompression for facial paralysis in temporal bone fracture. Methods: The main relative prognostic factors of 64 patients with facial paralysis were analyzed. An experimental model of facial paralysis was made. The expansion rates of facial nerve in the facial canal opening group and the facial canal non-opening group were measured and observed under electron microscope. Results: The main factors affecting the prognosis were facial nerve decompression and selection of surgery time. The expansion rate of facial nerve in the facial canal opening group was significantly higher than that of the facial canal non-opening group (t= 7.53 , P< 0.01 ). The injury degree of the nerve fiber in the facial canal non-opening group was severe. Conclusions: Early facial nerve decompression is beneficial to restoration of the facial nerve function.