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城市公共空间的“非人工化”设计——以湖南烈士公园东大门设计为例
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作者 左峰 魏春雨 《建筑与环境》 2010年第5期56-58,共3页
城市公共空间是指城市或城市群中建筑实体之间存在着的开放空间。现今的城市公共空间设计中,设计师过分的追求平面的几何化和图案化,这使得城市公共空间离大众的情感越来越远。随着人们群众需求的提高,他们也对城市公共空间提出了更... 城市公共空间是指城市或城市群中建筑实体之间存在着的开放空间。现今的城市公共空间设计中,设计师过分的追求平面的几何化和图案化,这使得城市公共空间离大众的情感越来越远。随着人们群众需求的提高,他们也对城市公共空间提出了更高的要求。基于这种情况下,我们提出的“非人工化”设计,在烈士公园东大门设计实践中,整体设计并非盲目无序而是呈现出一种制约下的游离状态,散漫有机中不乏理性。 展开更多
关键词 非人工化 自然 丘陵 湿地 微地形
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非人工气道湿化在脑卒中患者呼吸道感染预防中的应用 被引量:4
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作者 许倩瑜 麦志晖 +2 位作者 周斯敏 江美兰 何思媚 《齐鲁护理杂志》 2021年第5期128-130,共3页
目的:探讨非人工气道湿化在脑卒中患者呼吸道感染预防中的应用效果。方法:采用信封法将2019年8月1日~2020年9月30日收治的60例非人工气道湿化脑卒中患者分为对照组和实验组各30例,对照组采用常规雾化吸入干预,实验组采用非人工气道湿化... 目的:探讨非人工气道湿化在脑卒中患者呼吸道感染预防中的应用效果。方法:采用信封法将2019年8月1日~2020年9月30日收治的60例非人工气道湿化脑卒中患者分为对照组和实验组各30例,对照组采用常规雾化吸入干预,实验组采用非人工气道湿化干预。比较两组干预72 h后吸痰操作时间和痰液量、住院时间、干预前后痰液黏稠度、口腔黏膜湿化满意度、口腔基本情况、护理满意度。结果:实验组住院时间、干预72 h后吸痰操作时间均短于对照组(P<0.01),干预72 h后痰液量少于对照组(P<0.01);干预24 h、48 h、72 h后,实验组痰液黏稠度低于对照组(P<0.05);实验组口腔黏膜湿化满意度、口腔基本情况及护理满意度评分、护理满意度均高于对照组(P<0.01)。结论:非人工气道湿化应用于脑卒中患者呼吸道感染预防护理中,具有住院及吸痰操作时间短、痰液少及黏稠度低、口腔基本情况较好、口腔黏膜湿化满意度及护理满意度高的优势,可在临床上进行推广。 展开更多
关键词 人工气道湿 脑卒中 呼吸道感染 吸痰
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探究非确定性人工气道湿化法降低脑卒中舌后坠患者肺部感染的效果
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作者 邓杰 《实用妇科内分泌电子杂志》 2020年第24期164-165,共2页
目的就非确定性人工气道湿化法降低脑卒中舌后坠患者肺部感染的效果进行研究、分析。方法抽取2018年12月至2019年12月我院收治的脑卒中舌后坠患者,对其实施非确定性人工气道湿化法。结果经相应气道湿化处理后,呼吸道湿化效果明显,减少... 目的就非确定性人工气道湿化法降低脑卒中舌后坠患者肺部感染的效果进行研究、分析。方法抽取2018年12月至2019年12月我院收治的脑卒中舌后坠患者,对其实施非确定性人工气道湿化法。结果经相应气道湿化处理后,呼吸道湿化效果明显,减少了吸痰次数,患者出现并发症的几率较低,生活质量得以改善。结论针对脑卒中舌后坠患者而言,非确定性人工气道湿化法的应用,有利于降低或预防肺部感染等并发症,在改善预后效果方面起着积极的意义,值得推广、应用。 展开更多
关键词 确定性人工气道湿 脑卒中舌后坠 肺部感染 效果
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Analysis on pivot turning of quadruped robot with bionic flexible body driven by the PAMs 被引量:1
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作者 雷静桃 Yu Huangying Wu Zhizheng 《High Technology Letters》 EI CAS 2014年第3期288-294,共7页
The pivot turning function of quadruped bionic robots can improve their mobility in unstructured environment.A kind of bionic flexible body mechanism for quadruped robot was proposed in this paper,which is composed of... The pivot turning function of quadruped bionic robots can improve their mobility in unstructured environment.A kind of bionic flexible body mechanism for quadruped robot was proposed in this paper,which is composed of one bionic spine and four pneumatic artificial muscles(PAMs).The coordinated movement of the bionic flexible body and the leg mechanism can achieve pivot turning gait.First,the pivot turning gait planning of quadruped robot was analyzed,and the coordinated movement sequence chart of pivot turning was presented.Then the kinematics modeling of leg side swing and body bending for pivot turning was derived,which should meet the condition of the coordinated movement between bionic flexible body and leg mechanism.The PAM experiment was conducted to analyze its contraction characteristic.The study on pivot turning of the quadruped robot will lay a theoretical foundation for the further research on dynamic walking stability of the quadruped robot in unstructured environment. 展开更多
关键词 quadruped robot bionic flexible body pivot turning pneumatic artificial muscle (PAM)
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Study on the musculoskeletal body for quadruped robots with spinning gait 被引量:2
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作者 雷静桃 Yu Huangying 《High Technology Letters》 EI CAS 2015年第3期245-252,共8页
The walking creatures' athletic ability is related to their body' s musculoskeletal system.A kind of musculoskeletal body for quadruped robots is developed,which will be used to assist the leg mechanism to ach... The walking creatures' athletic ability is related to their body' s musculoskeletal system.A kind of musculoskeletal body for quadruped robots is developed,which will be used to assist the leg mechanism to achieve spinning gait in order to improve the robot mobility in unstructured environment.A bionic-flexible-spine model driven by pneumatic artificial muscles(PAMs) is proposed.Because the body has the flexible property,the robot can achieve spinning gait quickly,which is similar to walking creatures by coordinated movement between body bending and legs side-swing.The kinematics of the bending of the musculoskeletal body and side-swing of leg mechanism of quadruped robot for spinning gait are studied.According to the stability analysis of spinning gait,the relationship between body bending angle and leg swing angle can be determined.The PID controller is designed to conduct the bending experiment,and the bending characteristic of the musculoskeletal body is studied.Experimental results show that the biggest bending angle of the musculoskeletal body can reach 30°. 展开更多
关键词 quadruped robot musculoskeletal body spinning gait flexible spine pneumaticartificial muscles (PAMs)
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Research on a randomized real-valued negative selection algorithm
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作者 张凤斌 王胜文 郝忠孝 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2006年第6期745-747,共3页
A real-valued negative selection algorithm with good mathematical foundation is presented to solve some of the drawbacks of previous approach. Specifically, it can produce a good estimate of the optimal number of dete... A real-valued negative selection algorithm with good mathematical foundation is presented to solve some of the drawbacks of previous approach. Specifically, it can produce a good estimate of the optimal number of detectors needed to cover the non-self space, and the maximization of the non-self coverage is done through an optimization algorithm with proven convergence properties. Experiments are performed to validate the assumptions made while designing the algorithm and to evaluate its performance. 展开更多
关键词 intrusion detection immune systems negative selection algorithm
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Intercultural Interaction and Competence: Challenges Facing South African Children
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作者 Munzhedzi James Mafela Cynthia Daphne D. Ntuli 《Sino-US English Teaching》 2014年第6期464-476,共13页
South Africa is a country of many cultures. Before the first democratic elections in 1994, people of different cultures found it difficult to interact because of legislated racial segregation, which made it difficult ... South Africa is a country of many cultures. Before the first democratic elections in 1994, people of different cultures found it difficult to interact because of legislated racial segregation, which made it difficult for blacks to mix with whites in almost all spheres of life. The only place interaction could take place was in the workplace. As a result, children from different cultural groups had few opportunities to interact. This made it impossible for South African children to learn about the cultures of other racial groups. With the introduction of a democratic government, all segregation laws were relaxed and people mixed freely in all spheres of life. Intercultural communication became commonplace. This new scenario presented a challenge to many South African children, but despite the limits imposed before 1994, children from all racial groups associated successfully. Their ability to cope with this situation with so much more ease than adults was remarkable. This paper seeks to highlight the communication skills used by South African children from all cultural backgrounds to achieve intercultural competence in a relatively short space of time. The paper will further reflect on the impact made on African children by intercultural interaction and competence. 展开更多
关键词 Intercultural interaction intercultural competence children multicultural society social behaviorverbal communication nonverbal communication LANGUAGE
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Yolk vitamin E positively affects prenatal growth but not oxidative status in yellow-legged gull embryos 被引量:1
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作者 Marco PAROLINI Cristina Daniela POSSENTI +7 位作者 Filiz KARADAS Graziano COLOMBO Maria ROMANO Manuela CAPRIOLI Isabella DALLE-DONNE Diego RUBOLINI Aldo MILZANI Nicola SAINO 《Current Zoology》 SCIE CAS CSCD 2018年第3期285-292,共8页
Parental effects occur whenever the phenotype of parents or the environment that they experience influences the phenotype and fitness of their offspring, In birds, parental effects are often mediated by the size and b... Parental effects occur whenever the phenotype of parents or the environment that they experience influences the phenotype and fitness of their offspring, In birds, parental effects are often mediated by the size and biochemical quality of the eggs in terms of maternally transferred components. Exogenous antioxidants are key egg components that accomplish crucial physiological functions during early life. Among these, vitamin E plays a vital role during prenatal development when the intense metabolism accompanying rapid embryo growth results in overproduction of pro-oxidant molecules. Studies of captive birds have demonstrated the positive effect of vitamin E supplementation on diverse phenotypic traits of hatchling and adult individuals, but its effects on embryo phenotype has never been investigated neither in captivity nor under a natural selection regime. In the present study, we experimentally tested the effect of the in ovo supplementation of vitamin E on morphological traits and oxidative status of yellow-legged gull (Larus michahellis) embryos. The supplementation of vitamin E promoted somatic growth in embryos soon before hatching, but did not affect their oxidative status. Our results suggest that maternally transferred vitamin E concentrations are optimized to prevent imbalances of oxidative status and the consequent raise of oxidative damage in yellow-legged gull embryos during prenatal development. 展开更多
关键词 Larus michahellis maternal effects morphological traits oxidative status prenatal period vitamin E.
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Understanding enzyme catalysis by means of supramolecular artificial enzymes 被引量:2
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作者 DONG ZeYuan ZHU JunYan +1 位作者 LUO Quan LIU JunQiu 《Science China Chemistry》 SCIE EI CAS 2013年第8期1067-1074,共8页
Enzymes are biomacromolecules responsible for the abundant chemical biotransformations that sustain life. Recently, biochemists have discovered that multiple conformations and numerous parallel paths are involved duri... Enzymes are biomacromolecules responsible for the abundant chemical biotransformations that sustain life. Recently, biochemists have discovered that multiple conformations and numerous parallel paths are involved during the processes catalyzed by enzymes. It is plausible that the entire macromolecular scaffold is involved in catalysis via cooperative motions that result in incredible catalytic efficiency. Moreover, some enzymes can very strongly bind the transition state with an association constant of up to 1024 M-1, suggesting that covalent bond formation is a possible process during the conversion of the transition state in enzyme catalysis, in addition to the concatenation of noncovalent interactions. Supramolecular chemistry provides fundamental knowledge about the relationships between the dynamic structures and functions of organized molecules. By tak-ing advantage of supramolecular concepts, numerous supramolecular enzyme mimics with complex and hierarchical structures have been designed and investigated. Through the study of supramolecular enzyme models, a great deal of information to aid our understanding of the mechanism of catalysis by natural enzymes has been acquired. With the development of supramolec-ular artificial enzymes, it is possible to replicate the features of natural enzymes with regards to their constitutional complexity and cooperative motions, and eventually decipher the conformation-based catalytic mystery of natural enzymes. 展开更多
关键词 artificial enzymes cooperative motions catalytic mechanism substrate recognition supramolecular chemistry
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