In this paper,we propose a novel approach to visualizing global geographical information:a panoramic sphere in an immersive environment.The whole geographical surface can be observed through the rotating of heads as t...In this paper,we propose a novel approach to visualizing global geographical information:a panoramic sphere in an immersive environment.The whole geographical surface can be observed through the rotating of heads as the viewpoint of the panoramic sphere is inside the sphere.We compared three approaches to visualizing the earth for rendering the geographical information in a virtual reality environment.On the tasks of terrestrial and marine geographical information,we compare the visualization effects on a)a globe,b)a flat map and c)a panoramic sphere.Terrestrial geographical information tasks include the area comparison and direction determination.Marine geographical information tasks contain the visualization of sea surface temperature and sea surface currents.For terrestrial geographical information tasks,the experimental results show that the panoramic sphere outperforms the globe and the flat map,with a higher average accuracy and a shorter time.On marine geographical information task,the panoramic sphere visualization is also superior to the flat map and the globe in an immersive environment for the sea surface temperature data and the sea surface current fields.In all three visualization experiments,the panoramic sphere is most preferred by the participants,particularly for global,transcontinental and transoceanic needs.展开更多
Disease control and health care with traditional Chinese veterinary medicine( TCVM) has attracted more and more attention in sheep green breeding. To promote healthy and smooth development of the work,the relationship...Disease control and health care with traditional Chinese veterinary medicine( TCVM) has attracted more and more attention in sheep green breeding. To promote healthy and smooth development of the work,the relationships between TCVM and antibiotics,and between TCVM and vaccines,were reviewed and analyzed. It was thought that TCVM and western medicine,such as antibiotics and vaccines,etc.,have their own characteristics and advantages,and should be mutually complemented rather than replaced. We should pay attention to the characteristics and advantages of the wholism concept and syndrome differentiation and treatment( diagnosis and treatment based on an overall analysis of the illness and the patient's condition) of TCVM,to develop and use TCVM health care agent or vaccine adjuvant,and their pertinence was improved according to different growth stages and physiological and pathological characteristics. Diagnosis and treatment based on an overall analysis of the illness and the population patient's condition must be attached importance to optimize the mode of administration,in order to adapt to disease prevention and control requirements in intensive and scale breeding of sheep.展开更多
According to the dual needs of heat transfer and thermal insulation in incinerators,different parts of the incinerators are designed with refractories of different SiC contents.Water vapor is mainly concentrated in th...According to the dual needs of heat transfer and thermal insulation in incinerators,different parts of the incinerators are designed with refractories of different SiC contents.Water vapor is mainly concentrated in the zones of feeding,drying and combustion,and the main damage factors of SiC refractories include high temperature and hydration.The results of hydration resistance of typical SiC-containing refractories show that the higher the SiC content,the worse the hydration resistance.Si_(3)N_(4)-SiC refractories after oxidation treatment have good hydration corrosion resistance,which are appropriate for water-cooled wall of waste incinerators.展开更多
The cooling of heavy ions can provide high-quality beams that are especially important for high-precisionexperimental nuclear and atomic physics. The laser cooling of relativistic C3+ ion beams at the experimental coo...The cooling of heavy ions can provide high-quality beams that are especially important for high-precisionexperimental nuclear and atomic physics. The laser cooling of relativistic C3+ ion beams at the experimental coolerstorage ring (CSRe) is being currently prepared at Institute of Modern Physics (IMP) in Lanzhou. An electroncyclotron resonance ion source (ECRIS) will be used to produce C3+ ion beams. Meanwhile, O4+ ions could alsobe produced due to residual gas because of the same mass-to-charge ratio. Therefore, both C3+ and O4+ ion beamswill be injected and circulate in a storage ring during the laser cooling experiment at the same time. A higher ratioof C3+ ions will lead to a better result for the laser cooling experiment.展开更多
基金This research was funded by the Science and Technology Innovation Project for Laoshan Laboratory(No.LSKJ202204303)the National Natural Science Foundation of China(No.42030406)+1 种基金the Fundamental Research Funds for the Central Universities(No.202261006)the ESANRSCC Scientific Cooperation Project on Earth Observation Science and Applications:Dragon 5(No.58393).
文摘In this paper,we propose a novel approach to visualizing global geographical information:a panoramic sphere in an immersive environment.The whole geographical surface can be observed through the rotating of heads as the viewpoint of the panoramic sphere is inside the sphere.We compared three approaches to visualizing the earth for rendering the geographical information in a virtual reality environment.On the tasks of terrestrial and marine geographical information,we compare the visualization effects on a)a globe,b)a flat map and c)a panoramic sphere.Terrestrial geographical information tasks include the area comparison and direction determination.Marine geographical information tasks contain the visualization of sea surface temperature and sea surface currents.For terrestrial geographical information tasks,the experimental results show that the panoramic sphere outperforms the globe and the flat map,with a higher average accuracy and a shorter time.On marine geographical information task,the panoramic sphere visualization is also superior to the flat map and the globe in an immersive environment for the sea surface temperature data and the sea surface current fields.In all three visualization experiments,the panoramic sphere is most preferred by the participants,particularly for global,transcontinental and transoceanic needs.
基金Supported by Special Science and Technology Foundation of the Ministry of Science and Technology(2013FY110600-8)Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences(CAAS-ASTIP-2017-LIHPS)Integration and Innovation of Mutton Sheep Green Quality and Efficiency Technology(CAAS-XTCX2016011-02)
文摘Disease control and health care with traditional Chinese veterinary medicine( TCVM) has attracted more and more attention in sheep green breeding. To promote healthy and smooth development of the work,the relationships between TCVM and antibiotics,and between TCVM and vaccines,were reviewed and analyzed. It was thought that TCVM and western medicine,such as antibiotics and vaccines,etc.,have their own characteristics and advantages,and should be mutually complemented rather than replaced. We should pay attention to the characteristics and advantages of the wholism concept and syndrome differentiation and treatment( diagnosis and treatment based on an overall analysis of the illness and the patient's condition) of TCVM,to develop and use TCVM health care agent or vaccine adjuvant,and their pertinence was improved according to different growth stages and physiological and pathological characteristics. Diagnosis and treatment based on an overall analysis of the illness and the population patient's condition must be attached importance to optimize the mode of administration,in order to adapt to disease prevention and control requirements in intensive and scale breeding of sheep.
文摘According to the dual needs of heat transfer and thermal insulation in incinerators,different parts of the incinerators are designed with refractories of different SiC contents.Water vapor is mainly concentrated in the zones of feeding,drying and combustion,and the main damage factors of SiC refractories include high temperature and hydration.The results of hydration resistance of typical SiC-containing refractories show that the higher the SiC content,the worse the hydration resistance.Si_(3)N_(4)-SiC refractories after oxidation treatment have good hydration corrosion resistance,which are appropriate for water-cooled wall of waste incinerators.
基金National Natural Science Foundation of China (10979007, 91126004, 11274317)
文摘The cooling of heavy ions can provide high-quality beams that are especially important for high-precisionexperimental nuclear and atomic physics. The laser cooling of relativistic C3+ ion beams at the experimental coolerstorage ring (CSRe) is being currently prepared at Institute of Modern Physics (IMP) in Lanzhou. An electroncyclotron resonance ion source (ECRIS) will be used to produce C3+ ion beams. Meanwhile, O4+ ions could alsobe produced due to residual gas because of the same mass-to-charge ratio. Therefore, both C3+ and O4+ ion beamswill be injected and circulate in a storage ring during the laser cooling experiment at the same time. A higher ratioof C3+ ions will lead to a better result for the laser cooling experiment.
