WorldWideScience

Sample records for bionics

  1. Bionic Nanosystems

    Science.gov (United States)

    Sebastian Mannoor, Manu

    Direct multidimensional integration of functional electronics and mechanical elements with viable biological systems could allow for the creation of bionic systems and devices possessing unique and advanced capabilities. For example, the ability to three dimensionally integrate functional electronic and mechanical components with biological cells and tissue could enable the creation of bionic systems that can have tremendous impact in regenerative medicine, prosthetics, and human-machine interfaces. However, as a consequence of the inherent dichotomy in material properties and limitations of conventional fabrication methods, the attainment of truly seamless integration of electronic and/or mechanical components with biological systems has been challenging. Nanomaterials engineering offers a general route for overcoming these dichotomies, primarily due to the existence of a dimensional compatibility between fundamental biological functional units and abiotic nanomaterial building blocks. One area of compelling interest for bionic systems is in the field of biomedical sensing, where the direct interfacing of nanosensors onto biological tissue or the human body could stimulate exciting opportunities such as on-body health quality monitoring and adaptive threat detection. Further, interfacing of antimicrobial peptide based bioselective probes onto the bionic nanosensors could offer abilities to detect pathogenic bacteria with bio-inspired selectivity. Most compellingly, when paired with additive manufacturing techniques such as 3D printing, these characteristics enable three dimensional integration and merging of a variety of functional materials including electronic, structural and biomaterials with viable biological cells, in the precise anatomic geometries of human organs, to form three dimensionally integrated, multi-functional bionic hybrids and cyborg devices with unique capabilities. In this thesis, we illustrate these approaches using three representative

  2. A Commentary on Bionics

    Directory of Open Access Journals (Sweden)

    Batchala Bharghava

    2015-03-01

    Full Text Available The combination of Engineering and Biology enhances the route for Bionics. As we know engineered materials is usually used to comprise design, characterization, production and application of materials and the scope has nowadays been widened to include systems and devices rather than just materials. Bionics is thus defined as design and fabrication of materials, devices and control systems[1-4]various single-cell-based models have been developed to minimize by implementation in biological and medical problems. Bionics is often stated to be revolutionary because it can be controlled through electric signals for the response of impulse.

  3. The bionic human

    OpenAIRE

    Francalanza, Emmanuel; Duca, Edward

    2013-01-01

    Faster, fitter and flawless? What would it take to build a Bionic Human? Emmanuel Francalanza delved into research at the Faculty of Engineering to see how Malta could contribute. 3D Art by Jean Claude Vancell.

  4. A Commentary on Bionics

    OpenAIRE

    Batchala Bharghava

    2015-01-01

    The combination of Engineering and Biology enhances the route for Bionics. As we know engineered materials is usually used to comprise design, characterization, production and application of materials and the scope has nowadays been widened to include systems and devices rather than just materials. Bionics is thus defined as design and fabrication of materials, devices and control systems[1-4]various single-cell-based models have been developed to minimize by implementation in biological and ...

  5. Cochlear bionic acoustic metamaterials

    Science.gov (United States)

    Ma, Fuyin; Wu, Jiu Hui; Huang, Meng; Fu, Gang; Bai, Changan

    2014-11-01

    A design of bionic acoustic metamaterial and acoustic functional devices was proposed by employing the mammalian cochlear as a prototype. First, combined with the experimental data in previous literatures, it is pointed out that the cochlear hair cells and stereocilia cluster are a kind of natural biological acoustic metamaterials with the negative stiffness characteristics. Then, to design the acoustic functional devices conveniently in engineering application, a simplified parametric helical structure was proposed to replace actual irregular cochlea for bionic design, and based on the computational results of such a bionic parametric helical structure, it is suggested that the overall cochlear is a local resonant system with the negative dynamic effective mass characteristics. There are many potential applications in the bandboard energy recovery device, cochlear implant, and acoustic black hole.

  6. Coming Soon: The Bionic Man

    Science.gov (United States)

    Woodard, Colin

    2006-01-01

    This article describes the latest advancement in the development of prosthetic arms. Bionic researchers are making significant advances in creating more agile prosthetics that users can control via their own nervous system. The bionic arm, which is still under development, can not only execute complex, thought-controlled movements, but also can…

  7. Significance and Progress of Bionics

    Institute of Scientific and Technical Information of China (English)

    Yongxiang Lu

    2004-01-01

    The four topics are described including the driving force and source of the scientific and technological creation, the definition and history of the bionics, the important significance of bionics in the development of the human beings, and the leading edge and progress of bionics. The appetency of human for the creation is the essential motivity of the innovation in science and technology. Nature and society are the objects for us to cognize and serve, meanwhile, the best teachers for us to learn from them. It is only 5 million years for human's development, but evolution of life has over 3.5 billion years history. Although, copying the creation from the human being is important, however, it has much more potential and opportunity in imitating the nature, and more possibility to promote the ability of original innovation. The significance and progress of bionics are summarized, in this paper, and the leading edges of bionics, in the near future, are forecasted.

  8. Development of Bionic Polymers

    Institute of Scientific and Technical Information of China (English)

    Xu Jian; Xie Qiongdan; Guo Xinlin; Feng Lin; Jiang Lei; Tang Wenghong; Luo Xiandong; Zhang Xiaoli; Han Charles C.

    2004-01-01

    Bionics, an artificial imitation of natural products, has always been a forever dream in the fairy tale or scientific fiction when we were childhood and children live now. However, the development of science in molecular scale makes this dream of childhood and manhood realize today.Bionics, a branch of science concerned with application the data about the functioning of biological system to the solution of engineering problems, become top-priority of science in the 21st century.However, few examples are given in molecular-level or nano-scale controlling lotus-like surface (a bionic surface for vast potential application). In the same time, such a typical bionic surface (as well known, so called "Lotus-effect") is a symbol or a totem that scientists can develop a novel approach to prepare desired surface and to control its microstructure or morphology at one's pleasure.In general, a film with a water contact angle (CA) higher than 150° can be defined as a superhydrophobic surface. The Langmuir-Blodgett film prepared by using CF3(CF2)10COOH possesses the lowest surface tension, which is 6 mJ/m2 (1). However, the water CA on a smooth surface with regularly aligned C20F42 with close-hexagonal packed -CF3 groups is only 119° (2).Obviously, only adjusting chemical composition is not enough to produce a superhydrophobic surface. Wenzel et al (3) suggested that the contact angle θ' of a liquid droplet on a rough solid surface should be written as:cosθ, =γcosθ = γ(γs-γsl)/γl, here γ is a roughness factor and γsl, γs and γl denote the interfacial tensions of the solid-liquid, the solid-gas, and the liquid-gas interfaces,respectively. This γ is always larger than 1 and a rough surface will be more water-repellent or more wettable to a liquid when intrinsic contact angle θ is bigger or smaller than 90°, respectively.Therefore, a general approach to obtain superhydrophobic surfaces is using a combination of depressing surface energy and enhancing surface

  9. Holographic Cosmology from BIonic Solutions

    OpenAIRE

    Sepehri, Alireza; Faizal, Mir; Setare, Mohammad Reza; Ali, Ahmed Farag

    2015-01-01

    In this paper, we will use a BIonic solution for analysing the holographic cosmology. A BIonic solution is a configuration of a D-brane and an anti-D-brane connected by a wormhole. A BIonic configuration can form due to a transition of fundamental black strings. After the BIon has formed, the wormhole in the BIon will act act as a channel for the energy to flow into the D3-brane. This will increase the degrees of freedom of the D3-brane causing inflation. The inflation will end when the wormh...

  10. Holographic Cosmology from BIonic Solutions

    CERN Document Server

    Sepehri, Alireza; Setare, Mohammad Reza; Ali, Ahmed Farag

    2015-01-01

    In this paper, we will use a BIonic solution for analysing the holographic cosmology. A BIonic solution is a configuration of a D-brane and an anti-D-brane connected by a wormhole. A BIonic configuration can form due to a transition of fundamental black strings. After the BIon has formed, the wormhole in the BIon will act act as a channel for the energy to flow into the D3-brane. This will increase the degrees of freedom of the D3-brane causing inflation. The inflation will end when the wormhole gets annihilated. However, as the distance between the D3-brane and the anti-D3-brane reduces, tachyonic states get created. These tachyonic states will lead to the formation of a new wormhole. This new wormhole will again increasing the degrees of freedom on the D3-brane causing late time acceleration.

  11. Getting the Measure of Bionics

    Institute of Scientific and Technical Information of China (English)

    Julian Vincent

    2005-01-01

    @@ In this issue of the Journal of Bionics Engineering we start something which is novel in academic publication but which is not at all uncommon in other serial publications. We present, in a series of seven chapters, a book on the interrelations between biology and engineering. It is not a handbook of bionics (though that might follow) but a series of essays that will bridge the gap between biology and engineering. We hope you will find them entertaining and informative, and that they will reinforce and revise areas of your knowledge,no matter what your entry point into this subject.

  12. 3D Printed Bionic Ears

    OpenAIRE

    Mannoor, Manu S.; Jiang, Ziwen; James, Teena; Kong, Yong Lin; Malatesta, Karen A.; Soboyejo, Winston O.; Verma, Naveen; Gracias, David H.; McAlpine, Michael C.

    2013-01-01

    The ability to three-dimensionally interweave biological tissue with functional electronics could enable the creation of bionic organs possessing enhanced functionalities over their human counterparts. Conventional electronic devices are inherently two-dimensional, preventing seamless multidimensional integration with synthetic biology, as the processes and materials are very different. Here, we present a novel strategy for overcoming these difficulties via additive manufacturing of biologica...

  13. Bionic machines and systems

    Energy Technology Data Exchange (ETDEWEB)

    Halme, A.; Paanajaervi, J. (eds.)

    2004-07-01

    Introduction Biological systems form a versatile and complex entirety on our planet. One evolutionary branch of primates, called humans, has created an extraordinary skill, called technology, by the aid of which it nowadays dominate life on the planet. Humans use technology for producing and harvesting food, healthcare and reproduction, increasing their capability to commute and communicate, defending their territory etc., and to develop more technology. As a result of this, humans have become much technology dependent, so that they have been forced to form a specialized class of humans, called engineers, who take care of the knowledge of technology developing it further and transferring it to later generations. Until now, technology has been relatively independent from biology, although some of its branches, e.g. biotechnology and biomedical engineering, have traditionally been in close contact with it. There exist, however, an increasing interest to expand the interface between technology and biology either by directly utilizing biological processes or materials by combining them with 'dead' technology, or by mimicking in technological solutions the biological innovations created by evolution. The latter theme is in focus of this report, which has been written as the proceeding of the post-graduate seminar 'Bionic Machines and Systems' held at HUT Automation Technology Laboratory in autumn 2003. The underlaying idea of the seminar was to analyze biological species by considering them as 'robotic machines' having various functional subsystems, such as for energy, motion and motion control, perception, navigation, mapping and localization. We were also interested about intelligent capabilities, such as learning and communication, and social structures like swarming behavior and its mechanisms. The word 'bionic machine' comes from the book which was among the initial material when starting our mission to the fascinating world

  14. "Bionic Woman" (2007): Gender, Disability and Cyborgs

    Science.gov (United States)

    Quinlan, Margaret M.; Bates, Benjamin R.

    2009-01-01

    This paper explores a representation of overlapping categories of gender, disability and cyborgs in "Bionic Woman" (2007). The television show "Bionic Woman" (2007) is a popular culture representation that uniquely brings together these categories. Three themes emerged from an analysis of blogger discourse surrounding the show. The themes reveal…

  15. 3D printed bionic ears.

    Science.gov (United States)

    Mannoor, Manu S; Jiang, Ziwen; James, Teena; Kong, Yong Lin; Malatesta, Karen A; Soboyejo, Winston O; Verma, Naveen; Gracias, David H; McAlpine, Michael C

    2013-06-12

    The ability to three-dimensionally interweave biological tissue with functional electronics could enable the creation of bionic organs possessing enhanced functionalities over their human counterparts. Conventional electronic devices are inherently two-dimensional, preventing seamless multidimensional integration with synthetic biology, as the processes and materials are very different. Here, we present a novel strategy for overcoming these difficulties via additive manufacturing of biological cells with structural and nanoparticle derived electronic elements. As a proof of concept, we generated a bionic ear via 3D printing of a cell-seeded hydrogel matrix in the anatomic geometry of a human ear, along with an intertwined conducting polymer consisting of infused silver nanoparticles. This allowed for in vitro culturing of cartilage tissue around an inductive coil antenna in the ear, which subsequently enables readout of inductively-coupled signals from cochlea-shaped electrodes. The printed ear exhibits enhanced auditory sensing for radio frequency reception, and complementary left and right ears can listen to stereo audio music. Overall, our approach suggests a means to intricately merge biologic and nanoelectronic functionalities via 3D printing. PMID:23635097

  16. Structural Bionic Design of Machine Tool Structures

    Institute of Scientific and Technical Information of China (English)

    ZHAO Ling; WANG Ting; GUO Hong-liang; LI Guo-meng

    2011-01-01

    A structural bionic design process is systematically presented for lightweight mechanical structures. By mimicking biological excellent structural principles, the stiffening ribs of a machining table and a moving column were redesigned for better load-bearing efficiency. Finite element method(FEM) simulation and model experiments were carried out for performance verification, which showed the increase of structural static and dynamic performance. Structural bionic offers a new solution to change conventional structures for high specific stiffness.

  17. Bionics in secondary school's physics curriculum

    OpenAIRE

    Poplavskis, Jānis

    2013-01-01

    Annotation The task of the promotional work "Bionics in secondary school's physics curriculum" - to view the secondary school's physics curriculum, the possibility to involve bionics in physics learning process, to develop a didactical model that integrates the student's knowledge and promotes the development of technological competence and facilitates the growth of interest towards natural sciences. Analysis of literature and educational documentation of the pedagogical and psychological asp...

  18. Structural Bionic Design for Digging Shovel of Cassava Harvester Considering Soil Mechanics

    OpenAIRE

    Shihao Liu; Shaojie Weng; Yulan Liao; Dongyun Zhu

    2014-01-01

    In order to improve the working performance of cassava harvester, structural bionic design for its digging shovel was conducted. Taking the oriental mole cricket's paws as bionic prototype, a new structural bionic design method for digging shovel was established, which considers the morphology-configuration-function coupling bionic. A comprehensive performance comparison method was proposed, which is used to select the bionic design schemes. The proposed bionic design method was used to impro...

  19. Bionic Humans Using EAP as Artificial Muscles Reality and Challenges

    OpenAIRE

    Yoseph Bar-Cohen

    2004-01-01

    For many years, the idea of a human with bionic muscles immediately conjures up science fiction images of a TV series superhuman character that was implanted with bionic muscles and portrayed with strength and speed far superior to any normal human. As fantastic as this idea may seem, recent developments in electroactive polymers (EAP) may one day make such bionics possible. Polymers that exhibit large displacement in response to stimulation that is other than electrical signa...

  20. Bionics in Engineering Education Considerations, Experiences and Conclusions

    OpenAIRE

    Ralf Neurohr; Cristian Dragomirescu

    2008-01-01

    During recent years bionics, a new discipline which is in charge with the transfer of the principles of construction, regulation, interaction and organisation of biology into innovative technical solutions, has attracted significant interest from various industries. Based on this request for bionic expertise in engineering, the faculty for teaching engineering in foreign languages (FILS) at ‘Politehnica’ University of Bucharest started a course in bionics in SS 2007, which was supported by th...

  1. Bionic engineering - R-madillo project

    OpenAIRE

    Hoogendijk, Roos; Huau, Benjamin; Renault, Sébastien; Stelmasiak, Isabela; Villar, Adrià

    2013-01-01

    This report includes the process of designing an armadillo robot and the analysis preceding the choice of the topic. Finding the first ideas for this project required extensive analysis of different bionic related disciplines in nature. The final topic tur ned out to be basic research about making a robot with several armadillo features, such as rolling up like a ball and walking. Prior to start the designi...

  2. Fermentation based carbon nanotube multifunctional bionic composites

    OpenAIRE

    Luca Valentini; Silvia Bittolo Bon; Stefano Signetti; Manoj Tripathi; Erica Iacob; Pugno, Nicola M.

    2016-01-01

    The exploitation of the processes used by microorganisms to digest nutrients for their growth can be a viable method for the formation of a wide range of so called biogenic materials that have unique properties that are not produced by abiotic processes. Here we produced living hybrid materials by giving to unicellular organisms the nutrient to grow. Based on bread fermentation, a bionic composite made of carbon nanotubes (CNTs) and a single-cell fungi, the Saccharomyces cerevisiae yeast extr...

  3. Fermentation based carbon nanotube bionic functional composites

    OpenAIRE

    Valentini, Luca; Bon, Silvia Bittolo; Signetti, Stefano; Tripathi, Manoj; Iacob, Erica; Pugno, Nicola M.

    2016-01-01

    The exploitation of the processes used by microorganisms to digest nutrients for their growth can be a viable method for the formation of a wide range of so called biogenic materials that have unique mechanical and physical properties that are not produced by abiotic processes. Based on grape must and bread fermentation, a bionic composite made of carbon nanotubes (CNTs) and single-cell fungi, the Saccharomyces cerevisiae yeast extract, was prepared by fermentation of such microorganisms at r...

  4. Bionic Design for Column of Gantry Machining Center to Improve the Static and Dynamic Performance

    OpenAIRE

    Shihao Liu; Wenhua Ye; Peihuang Lou; Weifang Chen; Jungui Huang; Lili Xiao

    2012-01-01

    In order to improve the machining accuracy of a gantry machining center, structural bionic design for column was conducted. Firstly, the bionic design method for stiffener plate structure was established based on distribution principles of gingko root system. The bionic design method was used to improve column structure of the gantry machining center, and three kinds of bionic columns were put forward. The finite element analysis on original and bionic columns indicates that the mass of the c...

  5. Tissue bionics: examples in biomimetic tissue engineering

    International Nuclear Information System (INIS)

    Many important lessons can be learnt from the study of biological form and the functional design of organisms as design criteria for the development of tissue engineering products. This merging of biomimetics and regenerative medicine is termed 'tissue bionics'. Clinically useful analogues can be generated by appropriating, modifying and mimicking structures from a diversity of natural biomatrices ranging from marine plankton shells to sea urchin spines. Methods in biomimetic materials chemistry can also be used to fabricate tissue engineering scaffolds with added functional utility that promise human tissues fit for the clinic

  6. Inductive Powering for a Bionic Eye

    OpenAIRE

    Martínez Ruiz, Sergi

    2015-01-01

    The evolution of the medicine is largely in the last decade due to the increasing research in the bioengineering field. The implantable medical devices (IMD) have an important role in this improvement. During the decades the IMD have evolved rapidly and a new generation of them has been born, the Wireless Implantable Medical Device (WIMD). In this thesis, it will be shown the tools for designing an inductive power link for a bionic lens eye, trying to make as much as possible batch-fabricated...

  7. Bionic asymmetry: from amiiform fish to undulating robotic fins

    Institute of Scientific and Technical Information of China (English)

    HU TianJiang; SHEN LinCheng; LOW K.H.

    2009-01-01

    Similar to bionic non-smooth which has been successfully applied in anti-resistance and anti-adhesion, bionic asymmetry is also an inherent property of biological systems and is worth exploring for con-ceivable pragmatic applications. Therefore, bionic asymmetry for undulations is of main interest in this paper. We initially investigate bionic asymmetry with a case study of the undulating robotic fin, RoboGnilos, which evolved from the long dorsal fin of Gymnarchus niloticus in the amiiforrn mode. Since the performance of the pre-existing undulating fins is hardly satisfactory, we obtain bionic in-spirations of undulatory asymmetry through observations and measurements on the specimen of G. niloticus, to improve upon the performance. Consequently, the newly acquired innovation for bionic asymmetry is incorporated into the previously derived kinematics model, and also applied to the ex-perimental prototype. Both computational and experimental results verify that bionic asymmetric un-dulation generates better propulsion performance (in terms of linear velocity and efficiency) than the traditional symmetric modes with the same undulatory parameters.

  8. A Bionic Neural Network for Fish-Robot Locomotion

    Institute of Scientific and Technical Information of China (English)

    Dai-bing Zhang; De-wen Hu; Lin-cheng Shen; Hai-bin Xie

    2006-01-01

    A bionic neural network for fish-robot locomotion is presented. The bionic neural network inspired from fish neural network consists of one high level controller and one chain of central pattern generators (CPGs). Each CPG contains a nonlinear neural Zhang oscillator which shows properties similar to sine-cosine model. Simulation results show that the bionic neural network presents a good performance in controlling the fish-robot to execute various motions such as startup,stop,forward swimming,backward swimming,turn right and turn left.

  9. Optical function of bionic nanostructure of ZnO

    Energy Technology Data Exchange (ETDEWEB)

    Xu, C X [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Zhu, G P [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Liu, Y J [School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798 (Singapore); Sun, X W [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Li, X [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Liu, J P [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China); Cui, Y P [Advanced Photonics Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096 (China)

    2007-10-15

    A novel bionic network nanostructure of zinc oxide (ZnO), which is similar to the microstructure of a butterfly wing, was first fabricated by a vapor-phase transport method using zinc powder as a source. These bionic nanostructures are composed of three ordered multi-aperture gratings. Similar to the optical effect of butterfly wings, the diffraction patterns of the bionic network of ZnO were observed. The mechanism of the optical function was discussed based on the physical model of multi-aperture diffraction.

  10. Optical function of bionic nanostructure of ZnO

    International Nuclear Information System (INIS)

    A novel bionic network nanostructure of zinc oxide (ZnO), which is similar to the microstructure of a butterfly wing, was first fabricated by a vapor-phase transport method using zinc powder as a source. These bionic nanostructures are composed of three ordered multi-aperture gratings. Similar to the optical effect of butterfly wings, the diffraction patterns of the bionic network of ZnO were observed. The mechanism of the optical function was discussed based on the physical model of multi-aperture diffraction

  11. Bionic Concept Applied to Flow Slab Design of PEMFC

    Science.gov (United States)

    Wang, C. T.; Chang, C. P.

    A character of fuel cell with high potency and low pollution was known well and considered as a new generation of power technology. In this study a novel design of flow slab addressed and originated from bionic concept will be applied to improve the performance of PEMFC. Simulation results executed at Re = 100 show that the bionic flow type will possess a better uniformity of velocity and lower pressure drop. Besides, the integral performance concerned at SDR and PDR will also show the bionic flow type to be an outstanding design. Hence, this novel flow design addressed will be useful to promotion of PEMFC.

  12. Resistance reduction by bionic coupling of the earthworm lubrication function

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Based on the biological coupling theory, the resistance reduction characteristic of the surface morphology and surface wettability of the earthworm were studied in this paper. The parameters of surface dorsal pore and corrugation were extracted. According to these parameters, the lubrication mechanism of the earthworm surface was analyzed. The distribution of the pores and surface morphology were designed and the bionic coupling samples were prepared. The positive pressure, lubricant flow rate and advancing velocity were selected as the experiment factors while the soil friction resistance as observed object. According to the obtained data of bionic coupling samples from the testing system of biologic signal for tiny soil adhesion test, the optimal samples from the bionic coupling resistance reduction tests were selected through the range analysis. Compared to the normal ones, the soil resistance of bionic coupling samples was reduced by 76.8%. This is of great significance and offers bright prospects for reducing energy loss in terrain mechanics.

  13. Acoustic performance analysis of bionic coupling multi-layer structure

    OpenAIRE

    Wang, Y. H.; Zhang, C. C.; Ren, L.Q.; Ichchou, Mohamed; Galland, Marie-Annick; Bareille, Olivier

    2014-01-01

    The interest of this paper lies in the proposition of using bionic method to develop a new sound absorption structure. Inspired by the coupling absorption structure of the skin and feather of a typical silent flying bird - owl, a bionic coupling multi-layer structure model is developed, which is composed of a micro-silt plate, porous fibrous material and a flexible micro-perforated membrane backed with airspace. The impedance transfer method is applied to calculate the absorption coefficients...

  14. Motor Driving Leg Design for Bionic Crab-like Robot

    Institute of Scientific and Technical Information of China (English)

    Wang; Li-quan; Qu; Xiao-rong; Meng; Qing-xin; Yuan; Peng; Wang; Mo-nan

    2002-01-01

    The paper presents the design of walking leg for bionics crab-like robot, which is driven with micro servo motor. The kinematic characteristics of the bionics machine are analysed for optimized structure parameters, which has been used in the robot design. A three closed loop motor control system structure for joint driver is also given, as well as the multi-joint driving system for walking robot leg.

  15. Bionics in Engineering Education Considerations, Experiences and Conclusions

    Directory of Open Access Journals (Sweden)

    Ralf Neurohr

    2008-01-01

    Full Text Available During recent years bionics, a new discipline which is in charge with the transfer of the principles of construction, regulation, interaction and organisation of biology into innovative technical solutions, has attracted significant interest from various industries. Based on this request for bionic expertise in engineering, the faculty for teaching engineering in foreign languages (FILS at ‘Politehnica’ University of Bucharest started a course in bionics in SS 2007, which was supported by the expertise of the German ‘Bionik-Kompetenz-Netz’, one of the leading organizations in bionics. This is the report on the considerations involved in the course concept, the first experiences with the students' acceptance, some conclusions and future perspectives for extending bionics activities at ‘Politehnica’. Finally, within the last section, the evaluation of a questionnaire, filled in by the students at the end of the course, will be presented. In order to avoid any confusion, considering overlapping or mixing up with other bio-disciplines related to technology, the paper starts with a short introduction, explaining the principles of bionics and providing a clear definition of the field.

  16. Bionic Research on Fish Scales for Drag Reduction

    Institute of Scientific and Technical Information of China (English)

    Zhaoliang Dou; Jiadao Wang; Darong Chen

    2012-01-01

    To reduce friction drag with bionic method in a more feasible way,the surface microstructure of fish scales was analyzed attempting to reveal the biologic features responding to skin friction drag reduction.Then comparable bionic surface mimicking fish scales was fabricated through coating technology for drag reduction.The paint mixture was coated on a substrate through a self-developed spray-painting apparatus.The bionic surface with micron-scale caves formed spontaneously due to the interfacial convection and deformation driven by interfacial tension gradient in the presence of solvent evaporation.Comparative experiments between bionic surface and smooth surface were performed in a water tunnel to evaluate the effect of bionic surface on drag reduction,and visible drag reduction efficiency was obtained.Numerical simulation results show that gas phase develops in solid-liquid interface of bionic surface with the effect of surface topography and partially replaces the solid-liquid shear force with gas-liquid shear force,hence reducing the skin friction drag effectively.Therefore,with remarkable drag reduction performance and simple fabrication technology,the proposed drag reduction technique shows the promise for practical applications.

  17. On just noticeable difference for bionic eye.

    Science.gov (United States)

    Li, Yi; McCarthy, Chris; Barnes, Nick

    2012-01-01

    We propose to use Just Noticeable Difference (JND) as the principle in visualizing results for image processing modules for prosthetic vision. Current Bionic Eye hardware implants have limited levels of separately perceivable brightness (i.e., low dynamic range in visualizing images). Therefore, it is important to ensure that the critical contrast must remain perceivable by maintaining of visual differences in downsampled images with reduced dynamic range. JND provides a mathematical framework for these psychophysics events. An increase by 1 in JND space corresponds to the smallest detectable change in visual space (i.e., just noticeable). Combining this principle and the dynamic range constraint, we cast the visualization problem to a linear optimization problem, which enables us to generate optimal visualization images. We demonstrate the usefulness of this principle on visualizing ground-plane segmentation. Experiments show that the proposed principle effectively provides critical visual information at different dynamic ranges, and generates consistent results for image sequences. PMID:23366546

  18. Bionic models for new sustainable energy technology

    Energy Technology Data Exchange (ETDEWEB)

    Tributsch, H. [Hahn-Meitner Inst., Dept. Solare Energetik, Berlin (Germany)

    2004-07-01

    Within the boundary conditions of an abundant, but diluted solar energy supply nature has successfully evolved sophisticated regenerative energy technologies, which are not yet familiar to human engineering tradition. Since until the middle of this century a substantial contribution of renewable energy to global energy consumption is required in order to limit environmental deterioration, bionic technologies may contribute to the development of commercially affordable technical options. Four biological energy technologies have been selected as examples to discuss the challenges, both in scientific and technological terms, as well as the material research aspects involved: photovoltaics based on irreversible kinetics, tensile water technology, solar powered protonic energy circuits, fuel cell catalysis based on abundant transition metals. (orig.)

  19. EDITORIAL: Special issue on medical bionics Special issue on medical bionics

    Science.gov (United States)

    Shepherd, Robert K.; D, Ph

    2009-12-01

    This special section of the Journal of Neural Engineering contains eight invited papers presented as part of the inaugural conference `Medical Bionics: A New Paradigm for Human Health' held in the beautiful seaside village of Lorne, Victoria, Australia from 16-19 November 2008. This meeting formed part of the Sir Mark Oliphant International Conference Series (www.oliphant.org.au) and was generously supported by the Department of Innovation, Industry, Science and Research of the Australian Government, the Australian Academy of Science and the Australian Academy of Technological Sciences and Engineering. This meeting was designed to bring experts from a variety of scientific, engineering and clinical disciplines together in a unique environment to discuss current progress in the field of medical bionics and to develop the concepts and techniques required to build the next generation of devices. The field is rapidly expanding, with new engineering solutions for neurological disorders being developed at an astonishing rate. Successful application of emerging engineering technologies into medical bionics devices requires a multidisciplinary research environment in order to deliver clinical solutions that are both safe and effective. Clinical success stories to date include spinal cord stimulators for the management of chronic neurological pain; auditory prostheses that allow the profoundly deaf to hear; and deep brain stimulation to negate movement disorders in Parkinson's disease. Other research programs currently undergoing clinical trials include devices that allow paraplegics to stand and even walk; brain-machine interfaces that provide quadriplegic patients with rudimentary control of a computer but may ultimately provide control of wheel chairs and artificial limbs; devices that detect and suppress epileptic seizures using brief trains of electrical stimulation; and retinal prostheses that will provide vision to the blind. The future for medical bionics is indeed

  20. Progress in the bionic study on anti-adhesion and resistance reduction of terrain machines

    Institute of Scientific and Technical Information of China (English)

    REN LuQuan

    2009-01-01

    The theoretical studies of bionics of machinery have great scientific significance, and the development of bionic machines has large practical values in the field of engineering and technology. Through the rigorous selection process of evolution, the survived living organisms have successfully developed outstanding abilities to adapt to their surroundings and to reproduce their offspring. In this review, we interpreted the fundamental principles of anti-adhesion and anti-resistance of soil animals by reviewing the current status in this research field and summarizing the work of the research group at Jilin Uni-versity of China in the past decades. The principles and technologies used in morphology bionics, electric-osmosis bionics, flexibility bionics, configuration bionics and coupling bionics were examined. Finally, the applications of the engineering bionics and their extensive prospects were introduced.

  1. Progress in the bionic study on anti-adhesion and resistance reduction of terrain machines

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The theoretical studies of bionics of machinery have great scientific significance, and the development of bionic machines has large practical values in the field of engineering and technology. Through the rigorous selection process of evolution, the survived living organisms have successfully developed outstanding abilities to adapt to their surroundings and to reproduce their offspring. In this review,we interpreted the fundamental principles of anti-adhesion and anti-resistance of soil animals by reviewing the current status in this research field and summarizing the work of the research group at Jilin University of China in the past decades. The principles and technologies used in morphology bionics,electric-osmosis bionics,flexibility bionics,configuration bionics and coupling bionics were examined.Finally,the applications of the engineering bionics and their extensive prospects were introduced.

  2. "Bionic Man" Showcases Medical Research | NIH MedlinePlus the Magazine

    Science.gov (United States)

    ... this page please turn JavaScript on. Feature: The Bionic Man Meet the Bionic Man Past Issues / Fall 2014 Table of Contents ... and medical imaging, visit www.nibib.nih.gov "Bionic Man" Showcases Medical Research The National Institute of ...

  3. The Bionic Anticipation of Natural Disasters

    Institute of Scientific and Technical Information of China (English)

    Helmut Tributsch

    2005-01-01

    After major natural disasters, such as the recent earthquake-tsunami event in South Asia, reports appear about the mysterious ability of animals to anticipate and to escape the impending danger. This is an opportunity to recall the long history of this phenomenon in the traditions of different civilizations, to evaluate Chinese efforts, 30 -40 years ago, to use this phenomenon for earthquake prediction, and to judge its state of acceptance in modern science. An effort is made to introduce this phenomenon as a research field of modern bionics. The timing is favorable since, increasingly, infrared thermal anomalies, monitored from satellite, suggesting litho-atmospheric processes, are found to precede earthquakes.They were unexpected by seismologists and are here suggested to essentially reflect the energy conversion patterns responsible for the signals monitored by animals. The aim is to learn from animals in the long term how natural disasters can better be anticipated, and how simple technical warning systems can be developed. Some challenges are analyzed. One is interpretation of the nature of energy release prior to the main earthquake disaster resulting in "macro-anomaly" precursors,another is better to understand the effect on animal senses. The role of non-linear cooperative phenomena including tsunamitype waves is emphasized.

  4. Fermentation based carbon nanotube multifunctional bionic composites

    Science.gov (United States)

    Valentini, Luca; Bon, Silvia Bittolo; Signetti, Stefano; Tripathi, Manoj; Iacob, Erica; Pugno, Nicola M.

    2016-06-01

    The exploitation of the processes used by microorganisms to digest nutrients for their growth can be a viable method for the formation of a wide range of so called biogenic materials that have unique properties that are not produced by abiotic processes. Here we produced living hybrid materials by giving to unicellular organisms the nutrient to grow. Based on bread fermentation, a bionic composite made of carbon nanotubes (CNTs) and a single-cell fungi, the Saccharomyces cerevisiae yeast extract, was prepared by fermentation of such microorganisms at room temperature. Scanning electron microscopy analysis suggests that the CNTs were internalized by the cell after fermentation bridging the cells. Tensile tests on dried composite films have been rationalized in terms of a CNT cell bridging mechanism where the strongly enhanced strength of the composite is governed by the adhesion energy between the bridging carbon nanotubes and the matrix. The addition of CNTs also significantly improved the electrical conductivity along with a higher photoconductive activity. The proposed process could lead to the development of more complex and interactive structures programmed to self-assemble into specific patterns, such as those on strain or light sensors that could sense damage or convert light stimulus in an electrical signal.

  5. Fermentation based carbon nanotube multifunctional bionic composites

    Science.gov (United States)

    Valentini, Luca; Bon, Silvia Bittolo; Signetti, Stefano; Tripathi, Manoj; Iacob, Erica; Pugno, Nicola M.

    2016-01-01

    The exploitation of the processes used by microorganisms to digest nutrients for their growth can be a viable method for the formation of a wide range of so called biogenic materials that have unique properties that are not produced by abiotic processes. Here we produced living hybrid materials by giving to unicellular organisms the nutrient to grow. Based on bread fermentation, a bionic composite made of carbon nanotubes (CNTs) and a single-cell fungi, the Saccharomyces cerevisiae yeast extract, was prepared by fermentation of such microorganisms at room temperature. Scanning electron microscopy analysis suggests that the CNTs were internalized by the cell after fermentation bridging the cells. Tensile tests on dried composite films have been rationalized in terms of a CNT cell bridging mechanism where the strongly enhanced strength of the composite is governed by the adhesion energy between the bridging carbon nanotubes and the matrix. The addition of CNTs also significantly improved the electrical conductivity along with a higher photoconductive activity. The proposed process could lead to the development of more complex and interactive structures programmed to self-assemble into specific patterns, such as those on strain or light sensors that could sense damage or convert light stimulus in an electrical signal. PMID:27279425

  6. Presenting Bionic: Broader Impacts and Outreach Network for Institutional Collaboration

    Science.gov (United States)

    Storm, K.

    2014-12-01

    Broader Impact plans are required of all NSF proposals. In 2011 the National Science Board, which oversees NSF, reconfirmed NSF's commitment to Broader Impacts in its task force report on the merit review system. At many institutions there are professionals that focus their work on supporting the Broader Impact work of researchers. This session will share the Broader Impacts and Outreach Network for Institutional Collaboration (BIONIC) plan to create a professional network of individuals and offices committed to planning and carrying out effective Broader Impact programming. BIONIC is an NSF Research Coordination Network that is recommended for funding through the Biology Directorate. In this session we will share the goals of BIONIC, and the progress to date in reaching those goals (of which one aspect is the curating of effective Broader Impact initiatives).

  7. A bionic eye actuated by ionic polymer-metal composite (IPMC) artificial muscle

    Science.gov (United States)

    Yu, Min; Li, Yuxiu; He, Qingsong; Song, Linlin; Dai, Zhendong

    2011-04-01

    This research was conducted with the aim of developing an energy-efficient, noiseless, movable bionic eye for use in bionic toys. This novel bionic eye is actuated by an ionic polymer-metal composite actuator. The overall size of the eye was 39 mm in length, 45 mm in width, and 45 mm in thickness. The experimental results revealed such a bionic eye design is feasible. This type of bionic eye is appropriate for use in toys and robots to increase their visual impact.

  8. Elastic Buckling of Bionic Cylindrical Shells Based on Bamboo

    Institute of Scientific and Technical Information of China (English)

    Jian-feng Ma; Wu-yi Chen; Ling Zhao; Da-hai Zhao

    2008-01-01

    High load-bearing efficiency is one of the advantages of biological structures after the evolution of billions of years.Biomimicking from nature may offer the potential for lightweight design. In the viewpoint of mechanics properties, the culm of bamboo comprises of two types of cells and the number of the vascular bundles takes a gradient of distribution. A three-point bending test was carried out to measure the elastic modulus. Results show that the elastic modulus of bamboo decreases gradually from the periphery towards the centre. Based on the structural characteristics of bamboo, a bionic cylindrical structure was designed to mimic the gradient distribution of vascular bundles and parenchyma cells. The buckling resistance of the bionic structure was compared with that of a traditional shell of equal mass under axial pressure by finite element simulations. Results show that the load-bearing capacity of bionic shell is increased by 124.8%. The buckling mode of bionic structure is global buckling while that of the conventional shell is local buckling.

  9. BIOCONAID System (Bionic Control of Acceleration Induced Dimming). Final Report.

    Science.gov (United States)

    Rogers, Dana B.; And Others

    The system described represents a new technique for enhancing the fidelity of flight simulators during high acceleration maneuvers. This technique forces the simulator pilot into active participation and energy expenditure similar to the aircraft pilot undergoing actual accelerations. The Bionic Control of Acceleration Induced Dimming (BIOCONAID)…

  10. Suzhou Institute of Nano-tech and Nano-bionics

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ The Suzhou Institute of Nano-tech and Nano-bionics is co-established by CAS, the provincial government of Jiangsu, and the municipal government of Suzhou, a time-honored urban center and picturesque tourist resort in the Yangtze delta.

  11. Design and Testing of a Bionic Dancing Prosthesis.

    Science.gov (United States)

    Rouse, Elliott J; Villagaray-Carski, Nathan C; Emerson, Robert W; Herr, Hugh M

    2015-01-01

    Traditionally, prosthetic leg research has focused on improving mobility for activities of daily living. Artistic expression such as dance, however, is not a common research topic and consequently prosthetic technology for dance has been severely limited for the disabled. This work focuses on investigating the ankle joint kinetics and kinematics during a Latin-American dance to provide unique motor options for disabled individuals beyond those of daily living. The objective of this study was to develop a control system for a bionic ankle prosthesis that outperforms conventional prostheses when dancing the rumba. The biomechanics of the ankle joint of a non-amputee, professional dancer were acquired for the development of the bionic control system. Subsequently, a professional dancer who received a traumatic transtibial amputation in April 2013 tested the bionic dance prosthesis and a conventional, passive prosthesis for comparison. The ability to provide similar torque-angle behavior of the biological ankle was assessed to quantify the biological realism of the prostheses. The bionic dancing prosthesis overlapped with 37 ± 6% of the non-amputee ankle torque and ankle angle data, compared to 26 ± 2% for the conventional, passive prosthesis, a statistically greater overlap (p = 0.01). This study lays the foundation for quantifying unique, expressive activity modes currently unavailable to individuals with disabilities. Future work will focus on an expansion of the methods and types of dance investigated in this work. PMID:26285201

  12. On the resonance analysis for compliant bionic jellyfishes

    Institute of Scientific and Technical Information of China (English)

    HSIEH; Wen-Hsiang; CHEN; Tsung-I

    2010-01-01

    A bionic jellyfish is a robot that can mimic the swimming of a real jellyfish. In practical application, the volume and the capacity of its carrying power are limited, hence its power consumption is a crucial factor for continuous swimming. The purpose of this paper is to propose an approach for the resonance analysis of bionic jellyfishes in order to investigate their energy efficiency in swimming. First, a suitable rigid-body bionic jellyfish was chosen from the previous study, and then its design approach was presented, Then, it was transformed into a compliant design, by the proposed method, in order to mimic the motion of a real jellyfish. Furthermore, its solid model was drawn, and the approach of modal analysis by using ANSYS software was addressed. After that, two terms, specific energy and energy ratio, were defined in order to evaluate its energy efficiency. Finally, a design example was given for illustration, and its motion simulations with and without resonance input were conducted by using ADAMS software. Additionally, their specific energies and energy ratios were found. The simulation results showed that the required input energy would be significantly reduced if a bionic jellyfish swims at its resonance frequency.

  13. Design and Testing of a Bionic Dancing Prosthesis.

    Directory of Open Access Journals (Sweden)

    Elliott J Rouse

    Full Text Available Traditionally, prosthetic leg research has focused on improving mobility for activities of daily living. Artistic expression such as dance, however, is not a common research topic and consequently prosthetic technology for dance has been severely limited for the disabled. This work focuses on investigating the ankle joint kinetics and kinematics during a Latin-American dance to provide unique motor options for disabled individuals beyond those of daily living. The objective of this study was to develop a control system for a bionic ankle prosthesis that outperforms conventional prostheses when dancing the rumba. The biomechanics of the ankle joint of a non-amputee, professional dancer were acquired for the development of the bionic control system. Subsequently, a professional dancer who received a traumatic transtibial amputation in April 2013 tested the bionic dance prosthesis and a conventional, passive prosthesis for comparison. The ability to provide similar torque-angle behavior of the biological ankle was assessed to quantify the biological realism of the prostheses. The bionic dancing prosthesis overlapped with 37 ± 6% of the non-amputee ankle torque and ankle angle data, compared to 26 ± 2% for the conventional, passive prosthesis, a statistically greater overlap (p = 0.01. This study lays the foundation for quantifying unique, expressive activity modes currently unavailable to individuals with disabilities. Future work will focus on an expansion of the methods and types of dance investigated in this work.

  14. Superhydrophobicity of Bionic Alumina Surfaces Fabricated by Hard Anodizing

    Institute of Scientific and Technical Information of China (English)

    Jing Li; Feng Du; Xianli Liu; Zhonghao Jiang; Luquan Ren

    2011-01-01

    Bionic alumina samples were fabricated on convex dome type aluminum alloy substrate using hard anodizing technique.The convex domes on the bionic sample were fabricated by compression molding under a compressive stress of 92.5 MPa.The water contact angles of the as-anodized bionic samples were measured using a contact angle meter (JC2000A) with the 3 μL water drop at room temperature.The measurement of the wetting property showed that the water contact angle of the unmodified as-anodized bionic alumina samples increases from 90° to 137° with the anodizing time.The increase in water contract angle with anodizing time arises from the gradual formation of hierarchical structure or composite structure.The structure is composed of the micro-scaled alumina columns and pores.The height of columns and the depth of pores depend on the anodizing time.The water contact angle increases significantly from 96° to 152° when the samples were modified with self-assembled monolayer of octadecanethiol (ODT),showing a change in the wettability from hydrophobicity to super-hydrophobicity.This improvement in the wetting property is attributed to the decrease in the surface energy caused by the chemical modification.

  15. Structural Bionic Design for Digging Shovel of Cassava Harvester Considering Soil Mechanics

    Directory of Open Access Journals (Sweden)

    Shihao Liu

    2014-01-01

    Full Text Available In order to improve the working performance of cassava harvester, structural bionic design for its digging shovel was conducted. Taking the oriental mole cricket's paws as bionic prototype, a new structural bionic design method for digging shovel was established, which considers the morphology-configuration-function coupling bionic. A comprehensive performance comparison method was proposed, which is used to select the bionic design schemes. The proposed bionic design method was used to improve digging shovel structure of a digging-pulling style cassava harvester, and nine bionic-type digging shovels were obtained with considering the impact of soil mechanics. After conducting mechanical properties comparative analysis for bionic-type digging shovels, the bionic design rules were summed up, and the optimal design scheme of digging shovel was obtained through combining the proposed comprehensive performance comparison method with Analytic Hierarchy Process (AHP. Studies have shown that bionic design method not only can improve the overall mechanical properties of digging shovel, but also can help to improve the harvesting effect of cassava harvester, which provides a new idea for crops harvesting machinery's structural optimization design.

  16. Auto-bionics – a new paradigm in Regenerative Medicine and Surgery

    OpenAIRE

    Ashrafian, Hutan; Darzi, Ara; Athanasiou, Thanos

    2010-01-01

    The concept of bionics represents the development of engineering and technology based on natural biological systems. Traditional applications of bionics in healthcare include artificial bionic organs which can be used to replace, mimic and even enhance biological function when compared to native organic equivalents (so-called ‘Exo-bionics’). Recently there has been a new wave of bio-inspired treatments that act through the reorganisation of the existing biological organs in an individual to e...

  17. BIONICS APLIED IN PRODUCT DEVELOPMENT = A BIÔNICA APLICADA NO DESENVOLVIMENTO DE PRODUTOS

    OpenAIRE

    Wiliam Jeremias dos Santos

    2010-01-01

    In the recent years seems to be increasing the interest of engineers in the nature design concepts, it is because based biological systems and elements from nature we can find technological solutions to improve products and process. In summary, it is bionics. In this paper are presented bionics definition and concepts, its potential applications and finally, the methodology to apply bionics in the development of a product. = Nos últimos anos há evidências do aumento de interesse dos engenheir...

  18. Analysis of North American Newspaper Coverage of Bionics Using the Disability Studies Framework

    OpenAIRE

    Sonum Panesar; Gregor Wolbring

    2014-01-01

    Bionics are a set of technology products that are constantly evolving. Bionics are proposed as body add-ons or replacement for many body parts (ears, eyes, knees, neural prostheses, joints, muscles, kidney, liver, cartilage lungs, discs, pancreas, dental pulp, skin, hippocampus, legs and hands), and functions such as speech. Two main applications of bionic products are discussed; one being for the restoration of body abilities to a species-typical norm and the other being the addition of abi...

  19. Investigation of the Effect of Dimple Bionic Nonsmooth Surface on Tire Antihydroplaning

    OpenAIRE

    Haichao Zhou; Guolin Wang; Yangmin Ding; Jian Yang; Huihui Zhai

    2015-01-01

    Inspired by the idea that bionic nonsmooth surfaces (BNSS) reduce fluid adhesion and resistance, the effect of dimple bionic nonsmooth structure arranged in tire circumferential grooves surface on antihydroplaning performance was investigated by using Computational Fluid Dynamics (CFD). The physical model of the object (model of dimple bionic nonsmooth surface distribution, hydroplaning model) and SST k − ω turbulence model are established for numerical analysis of tire hydroplaning. By virtu...

  20. Synthesis and Characterization of Bionic Nano-silicon-substituted Hydroxyapatite

    Directory of Open Access Journals (Sweden)

    ZHAI Qian-Qian, ZHAO Shi-Gui, WANG Xiao-Hai, LI Xiu-Zhi, LI Wen-Jie, ZHENG Ya-Sen

    2013-01-01

    Full Text Available To explore the synthesis condition of the bionic nano-silicon-substituted hydroxyapatite and the impact of the silicon content on its crystallization properties, hydroxyapatite of different silicon content were synthesized from Ca(NO32, (NH42HPO4 and Si(OCH2CH34(TEOS via an aqueous precipitation reaction. Fourier transform infrared spectroscopy (FTIR, X-ray fluorescence spectrum (XRF, X-ray diffraction (XRD and transmission electron microscopy (TEM were used for hydroxyapatite characterization. The results show that relative low temperature (40¡䧠is conducive to obtain pure bionic nano-silicon-substituted hydroxyapatite. Under this condition, SiO44- enters the lattice of hydroxyapatite and replaces part of PO43-. The more the content of silicon is, the lower the crystallinity is, the smaller the grain size is and the higher the lattice parameters a and c are.

  1. HYDRODYNAMIC ANALYSIS AND SIMULATION OF A SWIMMING BIONIC ROBOT TUNA

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A dynamic model for undulatory locomotion was proposed to study the swimming mechanism of a developed bionic robot tuna. On the basis of inviscid hydrodynamics and rigid-body dynamics, the momentum and propulsive force required for propelling the swimming robot tuna's flexible body was calculated. By solving the established dynamic equations and efficiency formula, the swimming velocity and propulsive efficiency of the bionic robot tuna were obtained. The relationship between the kinematic parameters of the robot tuna's body curve and the hydrodynamic performances was established and discussed after hydrodynamic simulations. The results presented in this article can be used to increase the swimming speed, propulsive thrust, and the efficiency of underwater vehicles effectively.

  2. [Bionic model for coordinated head-eye motion control].

    Science.gov (United States)

    Mao, Xiaobo; Chen, Tiejun

    2011-10-01

    The relationships between eye movements and head movements of the primate during gaze shifts are analyzed in detail in the present paper. Applying the mechanisms of neurophysiology to engineering domain, we have improved the robot eye-head coordination. A bionic control strategy of coordinated head-eye motion was proposed. The processes of gaze shifts are composed of an initial fast phase followed by a slow phase. In the fast phase saccade eye movements and slow head movements were combined, which cooperate to bring gaze from an initial resting position toward the new target rapidly, while in the slow phase the gaze stability and target fixation were ensured by the action of the vestibulo-ocular reflex (VOR) where the eyes and head rotate by equal amplitudes in opposite directions. A bionic gaze control model was given. The simulation results confirmed the effectiveness of the model by comparing with the results of neurophysiology experiments. PMID:22097251

  3. Bionic optimization research of soil cultivating component design

    Institute of Scientific and Technical Information of China (English)

    GUO ZhiJun; ZHOU ZhiLi; ZHANG Yi; LI ZhongLi

    2009-01-01

    The basic biomechanical laws that apply to the clawed toes of animals with powerful digging abilities and the optimal bionic design of curved soil cultivating components with an analogous contour were researched in a novel way. First, the curvature and profile of the inside contour line of a field mouse's clawed toe were analyzed. The finite element method (FEM) was then used to simulate the working process in order to study the changing characteristics of the working resistance of bionic soil-engaging surfaces and the stress field of the processed soil. A straight-line cultivating component was used for comparative analysis. In accordance with the simulation results, a series of soil cultivating components of varying design were manufactured. An indoor soil bin experiment was carried out to measure their working resistance and validate the results of the FEM analysis. The results of this research would have important values in the optimization design of cultivating components for energy and cost savings.

  4. Cell-bionics: tools for real-time sensor processing

    OpenAIRE

    Toumazou, Chris; Cass, Tony

    2007-01-01

    The accurate monitoring of the physiological status of cells, tissues and whole organisms demands a new generation of devices capable of providing accurate data in real time with minimal perturbation of the system being measured. To deliver on the promise of cell-bionics advances over the past decade in miniaturization, analogue signal processing, low-power electronics, materials science and protein engineering need to be brought together. In this paper we summarize recent advances in our res...

  5. Development of Junction Elements from Study of the Bionics

    Institute of Scientific and Technical Information of China (English)

    Wilson Kindlein Junior; Luis Henrique Alves C(a)ndido; André Canal Marques; Sandra Souza dos Santos; Maurício da Silva Viegas

    2007-01-01

    The applications of bionic methodology developed by the Laboratory of Design and Material Selection as basis in the creation of junction elements were demonstrated.These elements favor the application of Ecodesign in reference to the effectiveness of product dismount aiming the reduction of ambient impact in all its phases of use.The creation,the development and the confection of new junction elements were described,and case studies of new products developed specificallv with this purpose were presented.

  6. Unifying inflation with late-time acceleration in BIonic system

    OpenAIRE

    Sepehri, Alireza; Rahaman, Farook; Setare, Mohammad Reza; Pradhan, Anirudh(Department of Mathematics, Institute of Applied Sciences & Humanities, GLA University, Mathura, U.P., 281 406, India); Capozziello, Salvatore; Sardar, Iftikar Hossain

    2015-01-01

    In this research, we propose a new model that allows to unify inflation, deceleration and acceleration phases of expansion history in BIonic system. In this model, in the beginning, there have been $k$ black fundamental strings that transited to the BIon configuration at a corresponding point. At this point, two universe brane and universe antibrane have been created, interacted with each other via one wormhole and inflated. With decreasing temperature, the energy of this wormhole flowed into...

  7. Bionic catalysis of porphyrin for electrochemical detection of nucleic acids

    International Nuclear Information System (INIS)

    Highlights: ► This is the first application of bionic catalysis of porphyrin as detection probe in bioanalysis. ► Porphyrin–DNA–gold nanoparticle probe is synthesized. ► Binding model between FeTMPyP and DNA is verified. ► The detection probe shows excellent electrocatalytic behaviors toward the reduction of O2. ► The biosensor exhibited good performance with wide linear range and high specificity. - Abstract: A novel electrochemical strategy was designed for the detection of DNA based on the bionic catalysis of porphyrin. The detection probe was prepared via the assembly of thiolated double strand DNA (dsDNA) with gold nanoparticles (AuNPs), and then interacted with cationic iron (III) meso-tetrakis (N-methylphyridinum-4-yl) porphyrin (FeTMPyP) via groove binding along the dsDNA surface. The resulting nanocomplex was characterized with transmission electron microscopy, UV–vis absorption and circular dichroism spectroscopy. The FeTMPyP–DNA–AuNPs probe on gold electrode demonstrated the excellent electrocatalytic behaviors toward the reduction of O2 due to the largely loading of FeTMPyP and good conductivity. Based on bionic catalysis of porphyrin for the reduction of O2, the resulting biosensor exhibited a good performance for the detection of DNA with a wide linear range from 1 × 10−12 to 1 × 10−8 mol L−1 and detection limit of 2.5 × 10−13 mol L−1 at the signal/noise of 3. More importantly, the biosensor presented excellent ability to discriminate the perfectly complementary target and the mismatched stand. This strategy could be conveniently extended for detection of other biomolecules. To the best of our knowledge, this is the first application of bionic catalysis of porphyrin as detection probe and opens new opportunities for sensitive detection of biorecognition events.

  8. Research on Tripod Gait of Bionic Hexapod Robot

    OpenAIRE

    Wei Jiang-shu; Qi Xiang-jun; LV Xiao-rong; LIU Ming-dan

    2013-01-01

    Based on the bionic theory and the analyzed of movement mechanism for six-legged insect, the principle of tripod gait movement for walking robot was analyzed in this paper, and basic parameters and the principle of relative movement theory on gait research were discussed. Then the hexapod walking robot was assembled by using the component of Fischertechnik. With the characters of simple connective structure, unique design, this robot can walk forward and backward and can avoid mini-barrier. T...

  9. Proposed Enhanced Object Recognition Approach for Accurate Bionic Eyes

    OpenAIRE

    Mohammad Shkoukani; Hesham Abusaimeh; Rawan Abu Lial; Mays Khawaldeh

    2012-01-01

    AI has played a huge role in image formation and recognition, but all built on the supervised and unsupervised learning algorithms the learning agents follow. Neural networks have also a role in bionic eyes integration but it is not discussed thoroughly in this paper. The chip to be implanted, which is a robotic device that applies methods developed in machine learning, consists of large scale algorithms for feature learning to construct classifiers for object detection and recognition, to in...

  10. Performance augmentation in hybrid bionic systems: techniques and experiment

    OpenAIRE

    Alicea, Bradly

    2008-01-01

    Recent developments in hybrid biological-technological systems (hybrid bionic systems) has made clear the need for evaluating ergonomic fit in such systems, especially as users first become adjusted to using such systems. This training is accompanied by physiological adaptation, and can be thought of computationally as a relative degree of matching between prosthetic devices, physiology, and behavior. Achieving performance augmentation involves two features of performance: a specific form of ...

  11. A Bionic Camera-Based Polarization Navigation Sensor

    OpenAIRE

    Daobin Wang; Huawei Liang; Hui Zhu; Shuai Zhang

    2014-01-01

    Navigation and positioning technology is closely related to our routine life activities, from travel to aerospace. Recently it has been found that Cataglyphis (a kind of desert ant) is able to detect the polarization direction of skylight and navigate according to this information. This paper presents a real-time bionic camera-based polarization navigation sensor. This sensor has two work modes: one is a single-point measurement mode and the other is a multi-point measurement mode. An indoor ...

  12. Bionics by examples 250 scenarios from classical to modern times

    CERN Document Server

    Nachtigall, Werner

    2015-01-01

    Bionics means learning from the nature for the development of technology. The science of "bionics" itself is classified into several sections, from materials and structures over procedures and processes until evolution and optimization. Not all these areas, or only a few, are really known in the public and also in scientific literature. This includes the Lotus-effect, converted to the contamination-reduction of fassades and the shark-shed-effect, converted to the  resistance-reduction of airplanes. However, there are hundreds of highly interesting examples that contain the transformation of principles of the nature into technology. From the large number of these examples, 250 were selected for the present book according to "prehistory", "early-history", "classic" and "modern time". Most examples are new. Every example includes a printed page in a homogeneous arrangement. The examples from the field "modern time" are joint in blocks corresponding to the sub-disciplines of bionics.

  13. Effects of bionic non-smooth surface on reducing soil resistance to disc ploughing

    Institute of Scientific and Technical Information of China (English)

    CHIRENDE; Benard; SIMALENGA; Timothy; Emmanuel

    2010-01-01

    Past researches have shown that the non-smooth body surfaces of soil burrowing animals help to reduce soil resistance. In this research, this concept of bionic non-smooth surface was applied to disc ploughs and an experiment was conducted in an indoor soil bin to find out the effects of different bionic units on reducing soil resistance to disc ploughing. Horizontal force acting on the disc plough during soil deformation was measured using a 5 kN sensor. Convex and concave bionic units were used and the material used for making convex ones is ultra high molecular weight polyethylene (UHMWPE) which is hydrophobic. From the experiment results, higher or deeper bionic units always resulted in less soil resistance. Convex bionic units gave the highest resistance reduction reaching a maximum of 19% reduction (from 1715.36 N to 1383.65 N) compared to concave bi-onic units. Also, samples with a bionic unit density of 30% gave the highest resistance reduction compared to the other two, which were either plain or had 10% density. In conclusion, the concept of bionic non-smooth units can be applied to disc ploughs in order to reduce soil resistance.

  14. The Research on Friction Characteristics of Non Smooth Bionic Mesoscopic Surface

    Directory of Open Access Journals (Sweden)

    Su Chunjian

    2014-12-01

    Full Text Available The application of using friction to transmit power and prevent slippage is very widely used, many animals have very strong adhesion climbing ability, and it has important theoretical significance and wide application prospect to research and the prepare bionic surface to increase transmission friction using the bionic technology. In recent years, the research of foot structure of climbing animals shows that their surface morphology has both macro and micro scale features, and only study from the macro to the micro scale surface structure can be better elucidate the mechanism of increasing-friction of climbing animal. This paper will study bionic surface structure on mesoscopic scale from micron to millimeter level, research the influence of foot structure of climbing animal under mesoscopic scale on characteristics of increasing friction using bionic technology, prepare the bionic non-smooth surface of convex or concave using bionic manufacturing technology, establish the friction model of non-smooth surface, investigate the increasing-friction mechanism of the bionic surface morphology on mesoscopic scales, reveals the influence of surface morphology, layout, size and material properties on the friction characteristics, provide the design of bionic friction surface and calculation method of friction coefficient and provide reliable theoretical basis for engineering application.

  15. Analysis of North American Newspaper Coverage of Bionics Using the Disability Studies Framework

    Directory of Open Access Journals (Sweden)

    Sonum Panesar

    2014-02-01

    Full Text Available Bionics are a set of technology products that are constantly evolving. Bionics are proposed as body add-ons or replacement for many body parts (ears, eyes, knees, neural prostheses, joints, muscles, kidney, liver, cartilage lungs, discs, pancreas, dental pulp, skin, hippocampus, legs and hands, and functions such as speech. Two main applications of bionic products are discussed; one being for the restoration of body abilities to a species-typical norm and the other being the addition of abilities to the body that are not species-typical. Disabled people are one main group perceived to be in need of therapeutic interventions that use various bionic products. So far, therapeutic interventions are about restoration to the species-typical norm. However, therapeutic bionic products increasingly give the wearer beyond normal body abilities (therapeutic enhancements. Many so-called non-disabled people want the same enhanced body-abilities especially through non-invasive bionic products (e.g., non-invasive brain machine interfaces, exoskeletons. The media has the ability to shape public perceptions with numerous consequences. The purpose of this study was to provide quantitative and qualitative data on how bionic technologies and its users are portrayed in North American newspapers. Data was obtained from 1977 to 2013 from the Canadian Newsstand complete database which covers over 300 English language Canadian newspapers and two Canadian newspapers, one with national focus (The Globe and Mail and one with local focus (Calgary Herald, and from 1980–2013 from one American newspaper with national reach (The New York Times. The study found (a an almost always positive portrayal of bionics; (b coverage of bionics mostly within a medical framework; (c a predominantly stereotypical and negative portrayal of individuals with disabilities; and (d a hierarchy of worthiness between different assistive devices such as a reporting bias favoring artificial legs

  16. Bionic Humans Using EAP as Artificial Muscles Reality and Challenges

    Directory of Open Access Journals (Sweden)

    Yoseph Bar-Cohen

    2008-11-01

    Full Text Available For many years, the idea of a human with bionic muscles immediately conjures up science fiction images of a TV series superhuman character that was implanted with bionic muscles and portrayed with strength and speed far superior to any normal human. As fantastic as this idea may seem, recent developments in electroactive polymers (EAP may one day make such bionics possible. Polymers that exhibit large displacement in response to stimulation that is other than electrical signal were known for many years. Initially, EAP received relatively little attention due to their limited actuation capability. However, in the recent years, the view of the EAP materials has changed due to the introduction of effective new materials that significantly surpassed the capability of the widely used piezoelectric polymer, PVDF. As this technology continues to evolve, novel mechanisms that are biologically inspired are expected to emerge. EAP materials can potentially provide actuation with lifelike response and more flexible configurations. While further improvements in performance and robustness are still needed, there already have been several reported successes. In recognition of the need for cooperation in this multidisciplinary field, the author initiated and organized a series of international forums that are leading to a growing number of research and development projects and to great advances in the field. In 1999, he challenged the worldwide science and engineering community of EAP experts to develop a robotic arm that is actuated by artificial muscles to win a wrestling match against a human opponent. In this paper, the field of EAP as artificial muscles will be reviewed covering the state of the art, the challenges and the vision for the progress in future years.

  17. Laser Additive Manufacturing and Bionics: Redefining Lightweight Design

    Science.gov (United States)

    Emmelmann, C.; Sander, P.; Kranz, J.; Wycisk, E.

    New layer wise manufacturing technologies such as Laser Additive Manufacturing (LAM) allow innovative approaches to product design. Especially for lightweight design in aircraft applications LAM offers new possibilities for load-adapted structures. However, to fully capture lightweight potential of LAM technologies new design guidelines and processes have to be developed. A novel approach to extreme lightweight design is realized by incorporating structural optimization tools, bionic structures and LAM guidelines into one design process. By consequently following this design process designers can achieve lightweight savings in designing new aircraft structures.

  18. Emergence and Expansion of Cosmic Space in BIonic system

    OpenAIRE

    Sepehri, A.; Farook Rahaman; Anirudh Pradhan; Iftikar Hossain Sardar

    2014-01-01

    Recently, Padmanabhan [ arXiv:1206.4916 [hep-th] ] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is the origin of emergence of space in 4D universe. We answer this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a...

  19. Research on Tripod Gait of Bionic Hexapod Robot

    Directory of Open Access Journals (Sweden)

    Wei Jiang-shu

    2013-07-01

    Full Text Available Based on the bionic theory and the analyzed of movement mechanism for six-legged insect, the principle of tripod gait movement for walking robot was analyzed in this paper, and basic parameters and the principle of relative movement theory on gait research were discussed. Then the hexapod walking robot was assembled by using the component of Fischertechnik. With the characters of simple connective structure, unique design, this robot can walk forward and backward and can avoid mini-barrier. The experiment showed that this robot has good mobility and stability.  

  20. Particle Erosion Resistance of Bionic Samples Inspired from Skin Structure of Desert Lizard, Laudakin stoliczkana

    Institute of Scientific and Technical Information of China (English)

    He Huang; Yan Zhang; Luquan Ren

    2012-01-01

    In order to improve the particle erosion resistance of engineering surfaces,this paper proposed a bionic sample which is inspired from the skin structure of desert lizard,Laudakin stoliczkana.The bionic sample consists of a hard shell (aluminum) and a soft core (silicone rubber) which form a two-layer composite structure.The sand blast tests indicated that the bionic sample has better particle erosion resistance.In steady erosion period,the weight loss per unit time of the bionic sample is about 10% smaller than the contrast sample.The anti-erosion mechanism of the bionic sample was studied by single particle impact test.The results show that,after the impact,the kinetic energy of the particle is reduced by 56.5% on the bionic sample which is higher than that on the contrast sample (31.2%).That means the bionic sample can partly convert the kinetic energy of the particle into the deformation energy of the silicone rubber layer,thus the erosion is reduced.

  1. Investigation of the Effect of Dimple Bionic Nonsmooth Surface on Tire Antihydroplaning

    Directory of Open Access Journals (Sweden)

    Haichao Zhou

    2015-01-01

    Full Text Available Inspired by the idea that bionic nonsmooth surfaces (BNSS reduce fluid adhesion and resistance, the effect of dimple bionic nonsmooth structure arranged in tire circumferential grooves surface on antihydroplaning performance was investigated by using Computational Fluid Dynamics (CFD. The physical model of the object (model of dimple bionic nonsmooth surface distribution, hydroplaning model and SST k-ω turbulence model are established for numerical analysis of tire hydroplaning. By virtue of the orthogonal table L16(45, the parameters of dimple bionic nonsmooth structure design compared to the smooth structure were analyzed, and the priority level of the experimental factors as well as the best combination within the scope of the experiment was obtained. The simulation results show that dimple bionic nonsmooth structure can reduce water flow resistance by disturbing the eddy movement in boundary layers. Then, optimal type of dimple bionic nonsmooth structure is arranged on the bottom of tire circumferential grooves for hydroplaning performance analysis. The results show that the dimple bionic nonsmooth structure effectively decreases the tread hydrodynamic pressure when driving on water film and increases the tire hydroplaning velocity, thus improving tire antihydroplaning performance.

  2. Investigation of the Effect of Dimple Bionic Nonsmooth Surface on Tire Antihydroplaning

    Science.gov (United States)

    Zhou, Haichao; Wang, Guolin; Ding, Yangmin; Yang, Jian; Zhai, Huihui

    2015-01-01

    Inspired by the idea that bionic nonsmooth surfaces (BNSS) reduce fluid adhesion and resistance, the effect of dimple bionic nonsmooth structure arranged in tire circumferential grooves surface on antihydroplaning performance was investigated by using Computational Fluid Dynamics (CFD). The physical model of the object (model of dimple bionic nonsmooth surface distribution, hydroplaning model) and SST k − ω turbulence model are established for numerical analysis of tire hydroplaning. By virtue of the orthogonal table L16(45), the parameters of dimple bionic nonsmooth structure design compared to the smooth structure were analyzed, and the priority level of the experimental factors as well as the best combination within the scope of the experiment was obtained. The simulation results show that dimple bionic nonsmooth structure can reduce water flow resistance by disturbing the eddy movement in boundary layers. Then, optimal type of dimple bionic nonsmooth structure is arranged on the bottom of tire circumferential grooves for hydroplaning performance analysis. The results show that the dimple bionic nonsmooth structure effectively decreases the tread hydrodynamic pressure when driving on water film and increases the tire hydroplaning velocity, thus improving tire antihydroplaning performance. PMID:27018311

  3. Bionic optimization research of soil cultivating component design

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The basic biomechanical laws that apply to the clawed toes of animals with powerful digging abilities and the optimal bionic design of curved soil cultivating components with an analogous contour were researched in a novel way. First, the curvature and profile of the inside contour line of a field mouse’s clawed toe were analyzed. The finite element method (FEM) was then used to simulate the working process in order to study the changing characteristics of the working resistance of bionic soil- engag- ing surfaces and the stress field of the processed soil. A straight-line cultivating component was used for comparative analysis. In accordance with the simulation results, a series of soil cultivating com- ponents of varying design were manufactured. An indoor soil bin experiment was carried out to meas- ure their working resistance and validate the results of the FEM analysis. The results of this research would have important values in the optimization design of cultivating components for energy and cost savings.

  4. Proposed Enhanced Object Recognition Approach for Accurate Bionic Eyes

    Directory of Open Access Journals (Sweden)

    Mohammad Shkoukani

    2012-07-01

    Full Text Available AI has played a huge role in image formation and recognition, but all built on the supervised and unsupervised learning algorithms the learning agents follow. Neural networks have also a role in bionic eyes integration but it is not discussed thoroughly in this paper. The chip to be implanted, which is a robotic device that applies methods developed in machine learning, consists of large scale algorithms for feature learning to construct classifiers for object detection and recognition, to input in the chip system. The challenge however is in identifying a complex image, which may require combined processes of learning features algorithms. In this paper an experimented approaches are stated for individual case of concentration of objects to obtain a high recognition outcome. Each approach may influence one angle, and a suggested non-experimented approach may give a better visual aid for bionic recognition and identification, using more learning and testing methods. The paper discusses the different approached of kernel and convolutional methods to classify objects, in addition to a proposed model to extract a maximized optimization of object formation and recognition. The proposed model combines variety of algorithms that have been experimented in differed related works and uses different learning approaches to handle large datasets in training.

  5. Constructs of highly effective heat transport paths by bionic optimization

    Institute of Scientific and Technical Information of China (English)

    程新广; 李志信; 过增元

    2003-01-01

    The optimization approach based on the biological evolution principle is used to construct the heat transport paths for volume-to-point problem. The transport paths are constructed by inserting high conductivity materials in the heat conduction domain where uniform or nonuniform heat sources exist. In the bionic optimization process, the optimal constructs of the high conductivity material are obtained by numerically simulating the evolution and degeneration process according to the uniformity principle of the temperature gradient. Finally, preserving the features of the optimal constructs, the constructs are regularized for the convenience of engineering manufacture. The results show that the construct obtained by bionic optimization is approximate to that obtained by the tree-network constructal theory when the heat conduction is enhanced for the domain with a uniform heat source and high conductivity ratio of the inserting material to the substrate, the high conductivity materials are mainly concentrated on the heat outlet for the case with a uniform heat source and low thermal conductivity ratio, and for the case with nonuniform heat sources, the high conductivity material is concentrated in the heat source regions and construacts several highly effective heat transport paths to connect the regions to the outlet.

  6. Numerical Simulation for Hydrodynamic Characteristics of A Bionic Flapping Hydrofoil

    Institute of Scientific and Technical Information of China (English)

    SU Yu-min; WANG Zhao-li; ZHANG Xi; GUO Bing-jie

    2012-01-01

    In order to study the propulsion mechanism of the bionic flapping hydrofoil (BFH),a 2-DoF (heave and pitch)motion model is formulated.The hydrodynamic performance of BFH with a series of kinematical parameters is explored via numerical simulation based on FLUENT.The calculated result is compared with the experimental value of MIT and that by the panel method.Moreover,the effect of inlet velocity,the angle of attack,the heave amplitude,the pitch amplitude,the phase difference,the heave biased angle,the pitch biased angle and the oscillating frequency are investigated.The study is useful for guiding the design of bionic underwater vehicle based on flapping propulsion.It is indicated that the optimal parameters combination is v =0.5 m/s,φ0 =40°,θ0 =30°,ψ =90°,φbias =0°,θbias =0°and f =0.5 Hz.

  7. Anaerobic digestion of corn stovers for methane production in a novel bionic reactor.

    Science.gov (United States)

    Zhang, Meixia; Zhang, Guangming; Zhang, Panyue; Fan, Shiyang; Jin, Shuguang; Wu, Dan; Fang, Wei

    2014-08-01

    To improve the biogas production from corn stovers, a new bionic reactor was designed and constructed. The bionic reactor simulated the rumen digestion of ruminants. The liquid was separated from corn stovers and refluxed into corn stovers again, which simulated the undigested particles separated from completely digested materials and fed back again for further degradation in ruminant stomach. Results showed that the bionic reactor was effective for anaerobic digestion of corn stovers. The liquid amount and its reflux showed an obvious positive correlation with biogas production. The highest biogas production rate was 21.6 ml/gVS-addedd, and the total cumulative biogas production was 256.5 ml/gVS-added. The methane content in biogas ranged from 52.2% to 63.3%. The degradation of corn stovers were greatly enhanced through simulating the animal digestion mechanisms in this bionic reactor. PMID:24923659

  8. Computational and experimental study on dynamic behavior of underwater robots propelled by bionic undulating fins

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Bionic undulating fins, inspired by undulations of the median and/or paired fin (MPF) fish, have a bright prospective for un-derwater missions with higher maneuverability, lower noisy, and higher efficiency. In the present study, a coupled computa-tional fluid dynamics (CFD) model was proposed and implemented to facilitate numerical simulations on hydrodynamic ef-fects of the bionic undulating robots. Hydrodynamic behaviors of underwater robots propelled by two bionic undulating fins were computationally and experimentally studied within the three typical desired movement patterns, i.e., marching, yawing and yawing-while-marching. Moreover, several specific phenomena in the bionic undulation mode were unveiled and dis-cussed by comparison between the CFD and experimental results under the same kinematics parameter sets. The contributed work on the dynamic behavior of the undulating robots is of importance for study on the propulsion mechanism and control algorithms.

  9. Architectural solutions in terms of Bionic urban environment of Olympic Sochi

    Directory of Open Access Journals (Sweden)

    Olga V. Kiba

    2010-10-01

    Full Text Available The principle of architectural bionics, suitable for Olympic Sochi environment was used for promenade designing. The complex solution includes promenade areas and a ‘winter and summer’ platform.

  10. Design and Implementation of a Bionic Mimosa Robot with Delicate Leaf Swing Behavior

    OpenAIRE

    Chung-Liang Chang; Jin-Long Shie

    2014-01-01

    This study designed and developed a bionic mimosa robot with delicate leaf swing behaviors. For different swing behaviors, this study developed a variety of situations, in which the bionic mimosa robot would display different postures. The core technologies used were Shape Memory Alloys (SMAs), plastic material, and an intelligent control device. The technology particularly focused on the SMAs memory processing bend mode, directional guidance, and the position of SMAs installed inside the pla...

  11. The Research on Friction Characteristics of Non Smooth Bionic Mesoscopic Surface

    OpenAIRE

    Su Chunjian; Li Ning; Xiao Linjing

    2014-01-01

    The application of using friction to transmit power and prevent slippage is very widely used, many animals have very strong adhesion climbing ability, and it has important theoretical significance and wide application prospect to research and the prepare bionic surface to increase transmission friction using the bionic technology. In recent years, the research of foot structure of climbing animals shows that their surface morphology has both macro and micro scale features, and only study from...

  12. Experimental Study of Reciprocating Friction between Rape Stalk and Bionic Nonsmooth Surface Units

    OpenAIRE

    Zheng Ma; Yaoming Li; Lizhang Xu

    2015-01-01

    Background. China is the largest producer of rape oilseed in the world; however, the mechanization level of rape harvest is relatively low, because rape materials easily adhere to the cleaning screens of combine harvesters, resulting in significant cleaning losses. Previous studies have shown that bionic nonsmooth surface cleaning screens restrain the adhesion of rape materials, but the underlying mechanisms remain unclear. Objective. The reciprocating friction between rape stalk and bionic n...

  13. A Numerical Study of Aerodynamic Performance and Noise of a Bionic Airfoil Based on Owl Wing

    OpenAIRE

    Xiaomin Liu; Xiang Liu

    2014-01-01

    Noise reduction and efficiency enhancement are the two important directions in the development of the multiblade centrifugal fan. In this study, we attempt to develop a bionic airfoil based on the owl wing and investigate its aerodynamic performance and noise-reduction mechanism at the relatively low Reynolds number. Firstly, according to the geometric characteristics of the owl wing, a bionic airfoil is constructed as the object of study at Reynolds number of 12,300. Secondly, the large eddy...

  14. The design of an asymmetric bionic branching channel for electronic chips cooling

    Science.gov (United States)

    Xu, Shanglong; Qin, Jie; Guo, Wei; Fang, Kuang

    2013-06-01

    Inspired by the wing vein of Lepidoptera, a designment of asymmetric bionic branching channel for electronic chips cooling is developed. Lepidoptera vein D was chosen to measure the angle of first and second branch level. Based on these regular patterns, an asymmetric bionic branching channel is designed in a 35 mm × 35 mm chip. Comparing with fractal-like branching channel, it provides a stronger heat transfer capability, lower pressure drop and lower flow resistance in the experiment.

  15. Blood Glucose Control in Type 1 Diabetes With a Bihormonal Bionic Endocrine Pancreas

    OpenAIRE

    Russell, Steven J.; El-Khatib, Firas H.; Nathan, David M.; Magyar, Kendra L.; Jiang, John; Damiano, Edward R.

    2012-01-01

    OBJECTIVE To test whether safe and effective glycemic control could be achieved in type 1 diabetes using a bihormonal bionic endocrine pancreas driven by a continuous glucose monitor in experiments lasting more than two days and including six high-carbohydrate meals and exercise as challenges to glycemic control. RESEARCH DESIGN AND METHODS Six subjects with type 1 diabetes and no endogenous insulin secretion participated in two 51-h experiments. Blood glucose was managed with a bionic endocr...

  16. Multiadaptive Bionic Wavelet Transform: Application to ECG Denoising and Baseline Wandering Reduction

    OpenAIRE

    Sayadi Omid; Shamsollahi Mohammad B

    2007-01-01

    We present a new modified wavelet transform, called the multiadaptive bionic wavelet transform (MABWT), that can be applied to ECG signals in order to remove noise from them under a wide range of variations for noise. By using the definition of bionic wavelet transform and adaptively determining both the center frequency of each scale together with the -function, the problem of desired signal decomposition is solved. Applying a new proposed thresholding rule works successfully in denoising t...

  17. Organic, bionics & blob design - conceptual and methodological clarification

    DEFF Research Database (Denmark)

    Thomsen, Bente Dahl

    2015-01-01

    discussions. Organic, Bionics and Blob Design is an example of such a vague concept. Vague concepts create confusion when the concepts are used in academic texts and in course descriptions, which should be understandable across international research and by exchange students. This article discusses the Tripod...... approach as a possible method to clarify meaning and as an aid to students' development of a technical terminology. The concepts must be used in the same context, in this example the context is Natural Design, and represent different analytical angles on scientific issues. The three concepts of Organic......-paradigms". The citation marks indicate that this study looks at paradigms as practice fields rather than as research programs. The field for this study is set by a design engineer education with courses that cover the three design disciplines....

  18. Unifying inflation with late-time acceleration in BIonic system

    CERN Document Server

    Sepehri, Alireza; Setare, Mohammad Reza; Pradhan, Anirudh; Capozziello, Salvatore; Sardar, Iftikar Hossain

    2015-01-01

    In this research, we propose a new model that allows to unify inflation, deceleration and acceleration phases of expansion history in BIonic system. In this model, in the beginning, there have been $k$ black fundamental strings that transited to the BIon configuration at a corresponding point. At this point, two universe brane and universe antibrane have been created, interacted with each other via one wormhole and inflated. With decreasing temperature, the energy of this wormhole flowed into universe branes and lead to inflation. After a short time, wormhole died, inflation ended and deceleration epoch started. With approaching two universe brane and antibrane together, tachyon was born, grew and caused creation of one new wormhole. At this time, two universe brane and antibrane connected again and late-time acceleration era of the universe began. We compare our model with previous unified phantom model and observational data and obtain some cosmological parameters like temperature in terms of time. We also ...

  19. Emergence and expansion of cosmic space in BIonic system

    International Nuclear Information System (INIS)

    Recently, Padmanabhan [ (arXiv:1206.4916 [hep-th])] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is the origin of emergence of space in 4D universe. We answer this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a thin shell wormhole with F-string charge. We propose a new model that allows that all degrees of freedom inside and outside the universe are controlled by the evolutions of BIon in extra dimension and tend to degrees of freedom of black F-string in string theory or black M2-brane in M-theory

  20. Engineering analyzes of bionics structures of componible modules

    International Nuclear Information System (INIS)

    The main goal of the research presented in this paper is creation of innovative concept for prefabricated houses for living, using the modular principal. The leading idea is assembling of prefabricated houses as structures of modules, with possibility for relatively easy changes during the exploitation: adding, removing or recombination of modules according to the space requirements of the users. Each of the modules would be fabricated as a fully prepared self standing room for living. The shape and construction of the modules, as well as their space arrangement are derived according to the principals of bionics. The quality of the presented concept is approved trough several analyses: static analysis of the construction using finite elements method; solar analysis for election of perfect orientation and insulation; thermal analysis. (Author)

  1. Emergence and expansion of cosmic space in BIonic system

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, A., E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Rahaman, Farook, E-mail: rahaman@iucaa.ernet.in [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India); Pradhan, Anirudh, E-mail: pradhan@iucaa.ernet.in [Department of Mathematics, GLA University, Mathura-281 406, U.P. (India); Sardar, Iftikar Hossain, E-mail: iftikar.spm@gmail.com [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India)

    2015-02-04

    Recently, Padmanabhan [ (arXiv:1206.4916 [hep-th])] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is the origin of emergence of space in 4D universe. We answer this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a thin shell wormhole with F-string charge. We propose a new model that allows that all degrees of freedom inside and outside the universe are controlled by the evolutions of BIon in extra dimension and tend to degrees of freedom of black F-string in string theory or black M2-brane in M-theory.

  2. Medicalization: current concept and future directions in a bionic society.

    Science.gov (United States)

    Maturo, Antonio

    2012-01-01

    The article illustrates the main features of the concept of medicalization, starting from its theoretical roots. Although it is the process of extending the medical gaze on human conditions, it appears that medicalization cannot be strictly connected to medical imperialism anymore. Other "engines" of medicalization are influential: consumers, biotechnology and managed care. The growth of research and theoretical reflections on medicalization has led to the proposal of other parallel concepts like pharmaceuticalization, genetization and biomedicalization. These new theoretical tools could be useful in the analysis of human enhancement. Human enhancement can be considered as the use of biomedical technology to improve performance on a human being who is not in need of a cure: a practice that is increasingly spreading in what might be defined as a "bionic society". PMID:22654387

  3. Medicalization: Current concept and future directions in a Bionic Society

    Directory of Open Access Journals (Sweden)

    Antonio Maturo

    2012-01-01

    Full Text Available The article illustrates the main features of the concept of medicalization, starting from its theoretical roots. Although it is the process of extending the medical gaze on human conditions, it appears that medicalization cannot be strictly connected to medical imperialism anymore. Other "engines" of medicalization are influential: consumers, biotechnology and managed care. The growth of research and theoretical reflections on medicalization has led to the proposal of other parallel concepts like pharmaceuticalization, genetization and biomedicalization. These new theoretical tools could be useful in the analysis of human enhancement. Human enhancement can be considered as the use of biomedical technology to improve performance on a human being who is not in need of a cure: a practice that is increasingly spreading in what might be defined as a "bionic society".

  4. Bionic intraocular lens with variable focus and integrated structure

    Science.gov (United States)

    Liang, Dan; Wang, Xuan-Yin; Du, Jia-Wei; Xiang, Ke

    2015-10-01

    This paper proposes a bionic accommodating intraocular lens (IOL) for ophthalmic surgery. The designed lens has a solid-liquid mixed integrated structure, which mainly consists of a support ring, elastic membrane, rigid lens, and optical liquid. The lens focus can be adjusted through the deformation of the lens front surface when compressed. The integrated structure of the IOL is presented, as well as a detailed description of the lens materials and fabrication process. Images under different radial pressures are captured, and the lens deformation process, accommodating range, density, and optical property are analyzed. The designed lens achieves a 14.6 D accommodating range under a radial pressure of 51.4 mN and a 0.24 mm alteration of the lens outer radius. The deformation property of the lens matches well with the characteristic of the eye and shows the potential to help patients fully recover their vision accommodation ability after the cataract surgery.

  5. Ego-motion based on EM for bionic navigation

    Science.gov (United States)

    Yue, Xiaofeng; Wang, L. J.; Liu, J. G.

    2015-12-01

    Researches have proved that flying insects such as bees can achieve efficient and robust flight control, and biologists have explored some biomimetic principles regarding how they control flight. Based on those basic studies and principles acquired from the flying insects, this paper proposes a different solution of recovering ego-motion for low level navigation. Firstly, a new type of entropy flow is provided to calculate the motion parameters. Secondly, EKF, which has been used for navigation for some years to correct accumulated error, and estimation-Maximization, which is always used to estimate parameters, are put together to determine the ego-motion estimation of aerial vehicles. Numerical simulation on MATLAB has proved that this navigation system provides more accurate position and smaller mean absolute error than pure optical flow navigation. This paper has done pioneering work in bionic mechanism to space navigation.

  6. Emergence and Expansion of Cosmic Space in BIonic system

    CERN Document Server

    Sepehri, A; Pradhan, Anirudh; Sardar, Iftikar Hossain

    2015-01-01

    Recently, Padmanabhan [arXiv:1206.4916] argued that the expansion rate of the universe can be thought of as the emergence of space as cosmic time progresses and is related to the difference between the surface degrees of freedom on the holographic horizon and the bulk degrees of freedom inside. The main question arises as to what is origin of emergence of space in 4D universe? We answer to this question in BIonic system. The BIon is a configuration in flat space of a D-brane and a parallel anti-D-brane connected by a thin shell wormhole with F-string charge. We propose a new model that allows all degrees of freedom inside and outside the universe are controlled by the evolutions of BIon in extra dimension and tend to degrees of freedom of black F-string in string theory or black M2-brane in M theory.

  7. Effect of electrical pulse treatment on the thermal fatigue resistance of bionic compacted graphite cast iron processed in water

    International Nuclear Information System (INIS)

    Highlights: ► Electrical pulse treatment can reduce cracks on bionic units before thermal fatigue tests. ► Electrical pulse treatment can reduce crack sources during thermal fatigue tests. ► Thermal fatigue resistance of bionic units processed in water is enhanced. ► Thermal fatigue resistance of bionic CGI processed in water is improved. -- Abstract: In order to further enhance the thermal fatigue resistance of bionic compacted graphite cast iron (CGI) which is processed by laser in water, the electrical pulse treatment is applied to improve the thermal fatigue resistance of bionic units. The results show that the electrical pulse treatment causes the supersaturated carbon atoms located in the lattice of austenite to react with the iron atoms to form the Fe3C. The microstructures of the bionic units processed in water are refined by the electrical pulse treatment. The cracks on the bionic units are reduced by the electrical pulse treatment before the thermal fatigue tests; and during the tests, the thermal fatigue resistance of bionic units is therefore enhanced by reducing the crack sources. By this way, the thermal fatigue resistance of bionic CGI processed in water is improved.

  8. [Design and Preparation of Plant Bionic Materials Based on Optical and Infrared Features Simulation].

    Science.gov (United States)

    Jiang, Xiao-jun; Lu, Xu-liang; Pan, Jia-liang; Zhang, Shuan-qin

    2015-07-01

    Due to the life characteristics such as physiological structure and transpiration, plants have unique optical and infrared features. In the optical band, because of the common effects of chlorophyll and water, plant leafs show spectral reflectance characteristics change in 550, 680, 1400 and 1900 nm significantly. In the infrared wave band, driven by transpiration, plants could regulate temperature on their own initiative, which make the infrared characteristics of plants different from artificial materials. So palnt bionic materials were proposed to simulate optical and infrared characteristics of plants. By analyzing formation mechanism of optical and infrared features about green plants, the component design and heat-transfer process of plants bionic materials were studied, above these the heat-transfer control formulation was established. Based on water adsorption/release compound, optical pigments and other man-made materials, plant bionic materials preparation methods were designed which could simulate the optical and infrared features of green plants. By chemical casting methods plant bionic material films were prepared, which use polyvinyl alcohol as film forming and water adsorption/release compound, and use optical pigments like chrome green and macromolecule yellow as colouring materials. The research conclusions achieved by testings figured out: water adsorption/release testing showed that the plant bionic materials with a certain thickness could absorb 1.3 kg water per square meter, which could satisfy the water usage of transpiration simulation one day; the optical and infrared simulated effect tests indicated that the plant bionic materials could preferably simulate the spectral reflective performance of green plants in optical wave band (380-2500 nm, expecially in 1400 and 1900 nm which were water absorption wave band of plants), and also it had similar daily infrared radiation variations with green plants, daily average radiation temperature

  9. Numerical Experiment of the Solid Particle Erosion of Bionic Configuration Blade of Centrifugal Fan

    Institute of Scientific and Technical Information of China (English)

    Junqiu ZHANG; Zhiwu HAN; Wei YIN; Huiyuan WANG; Chao GE; Jialian JIANG

    2013-01-01

    In this paper,a bionic method was presented to improve the erosion resistance of blade of the centrifugal fan.A numerical investigation of the solid particle erosion on the standard and bionic configuration blade of 4-72N_o10C centrifugal fan was presented.The numerical study employs computational fluid dynamics (CFD) software,based on a finite volume method,in which the discrete phase model was used to modele the solid particles flow,and the Eulerian conservation equation was adopt to simulate the continuous phase.Moreover,user-defined function was used to define wear equation.The various diameters of the particles were taken into account.The positions of collision of standard and bionic fan blades were discussed,and two kinds of centrifugal fan blade wear were compared.The results show that the particles from the incident source with different positions have different processes of turning and movement when enter into the impeller.The trajectories of flow in the fan channel are significantly different for the particles with different diameters.Bionic fan blade have lower erosion rate than the standard fan blade when the particle size is 20 μm.The anti-erosion mechanism of the bionic fan blade was discussed.

  10. Lightweight Design and Verification of Gantry Machining Center Crossbeam Based on Structural Bionics

    Institute of Scientific and Technical Information of China (English)

    Ling Zhao; Jianfeng Ma; Wuyi Chen; Hongliang Guo

    2011-01-01

    The lightweight and high efficiency of natural structures are the inexhaustible sources for engineering improvements. The goal of the study is to find innovative solutions for mechanical lightweight design through the application of structural bionic approaches. Giant waterlily leaf ribs and cactus stem are investigated for their optimal framework and superior performance.Their structural characteristics are extracted and used in the bio-inspired design of Lin MC6000 gantry machining center crossbeam. By mimicking analogous network structure, the bionic model is established, which has better load-carrying capacity than conventional distribution. Finite Element Method (FEM) is used for numerical simulation. Results show better specific stiffness of the bionic model, which is increased by 17.36%. Finally the scaled models are fabricated by precision casting for static and dynamic tests. The physical experiments are compared to numerical simulation. The results show that the maximum static deformation of the bionic model is reduced by about 16.22%, with 3.31% weight reduction. In addition, the first four natural frequencies are improved obviously. The structural bionic design is a valuable reference for updating conventional mechanical structures with better performance and less material consumption.

  11. Numerical Study on Hydrodynamic Performance of Bionic Caudal Fin

    Directory of Open Access Journals (Sweden)

    Kai Zhou

    2016-01-01

    Full Text Available In this work, numerical simulations are conducted to reveal the hydrodynamic mechanism of caudal fin propulsion. In the modeling of a bionic caudal fin, a universal kinematics model with three degrees of freedom is adopted and the flexible deformation in the spanwise direction is considered. Navier-Stokes equations are used to solve the unsteady fluid flow and dynamic mesh method is applied to track the locomotion. The force coefficients, torque coefficient, and flow field characteristics are extracted and analyzed. Then the thrust efficiency is calculated. In order to verify validity and feasibility of the algorithm, hydrodynamic performance of flapping foil is analyzed. The present results of flapping foil compare well with those in experimental researches. After that, the influences of amplitude of angle of attack, amplitude of heave motion, Strouhal number, and spanwise flexibility are analyzed. The results show that, the performance can be improved by adjusting the motion and flexibility parameters. The spanwise flexibility of caudal fin can increase thrust force with high propulsive efficiency.

  12. Nanocarbon-Coated Porous Anodic Alumina for Bionic Devices

    Directory of Open Access Journals (Sweden)

    Morteza Aramesh

    2015-08-01

    Full Text Available A highly-stable and biocompatible nanoporous electrode is demonstrated herein. The electrode is based on a porous anodic alumina which is conformally coated with an ultra-thin layer of diamond-like carbon. The nanocarbon coating plays an essential role for the chemical stability and biocompatibility of the electrodes; thus, the coated electrodes are ideally suited for biomedical applications. The corrosion resistance of the proposed electrodes was tested under extreme chemical conditions, such as in boiling acidic/alkali environments. The nanostructured morphology and the surface chemistry of the electrodes were maintained after wet/dry chemical corrosion tests. The non-cytotoxicity of the electrodes was tested by standard toxicity tests using mouse fibroblasts and cortical neurons. Furthermore, the cell–electrode interaction of cortical neurons with nanocarbon coated nanoporous anodic alumina was studied in vitro. Cortical neurons were found to attach and spread to the nanocarbon coated electrodes without using additional biomolecules, whilst no cell attachment was observed on the surface of the bare anodic alumina. Neurite growth appeared to be sensitive to nanotopographical features of the electrodes. The proposed electrodes show a great promise for practical applications such as retinal prostheses and bionic implants in general.

  13. Effect of bionic coupling units' forms on wear resistance of gray cast iron under dry linear reciprocating sliding condition

    Science.gov (United States)

    Pang, Zuobo; Zhou, Hong; Xie, Guofeng; Cong, Dalong; Meng, Chao; Ren, Luquan

    2015-07-01

    In order to get close to the wear form of guide rails, the homemade linear reciprocating wear testing machine was used for the wear test. In order to improve the wear-resistance of gray cast iron guide rail, bionic coupling units of different forms were manufactured by a laser. Wear behavior of gray-cast-iron with bionic-coupling units has been studied under dry sliding condition at room temperature using the wear testing machine. The wear resistance was evaluated by means of weight loss measurement and wear morphology. The results indicated that bionic coupling unit could improve the wear resistance of gray cast iron. The wear resistance of gray cast iron with reticulation bionic coupling unit is the best. When the load and speed changed, reticulation bionic coupling unit still has excellent performance in improving the wear resistance of gray cast iron.

  14. Design and Implementation of a Bionic Mimosa Robot with Delicate Leaf Swing Behavior

    Directory of Open Access Journals (Sweden)

    Chung-Liang Chang

    2014-12-01

    Full Text Available This study designed and developed a bionic mimosa robot with delicate leaf swing behaviors. For different swing behaviors, this study developed a variety of situations, in which the bionic mimosa robot would display different postures. The core technologies used were Shape Memory Alloys (SMAs, plastic material, and an intelligent control device. The technology particularly focused on the SMAs memory processing bend mode, directional guidance, and the position of SMAs installed inside the plastic material. Performance analysis and evaluation were conducted using two SMAs for mimosa opening/closing behaviors. Finally, by controlling the mimosa behavior with a micro-controller, the optimal strain swing behavior was realized through fuzzy logic control in order to display the different postures of mimosa under different situations. The proposed method is applicable to micro-bionic robot systems, entertainment robots, biomedical engineering, and architectural aesthetics-related fields in the future.

  15. From Hearing Aids, Prostheses and Cochlear Implants to "Bionic" Feedback Phonation

    Directory of Open Access Journals (Sweden)

    Petros Stagiopoulos

    2016-08-01

    Full Text Available In Otorhinolaryngological medical practice therapeutic devices are used that are highly invasive and immersive. For aural and oral communication these could be hearing aids, prosthetics, implants or radio-electronic appliances that build up a bionic environment with apparent tendencies for virtualization. The popularization of such devices promotes the extensive use of Brain Computer Interfaces to both the scientific community and the consumer market. The use of bionic devices clinched with synapses of the nerves does not merely mingle input activity to brain activity, but also it provides a virtual channel for augmenting and manipulating speech communication, language communication and even further musical communication. The effects of bionic aural and oral communication when learning practices for the impaired in hearing are applied is encountered in terms of ability for speech perception and linguistic competence

  16. Bionic optimization in structural design stochastically based methods to improve the performance of parts and assemblies

    CERN Document Server

    Gekeler, Simon

    2016-01-01

    The book provides suggestions on how to start using bionic optimization methods, including pseudo-code examples of each of the important approaches and outlines of how to improve them. The most efficient methods for accelerating the studies are discussed. These include the selection of size and generations of a study’s parameters, modification of these driving parameters, switching to gradient methods when approaching local maxima, and the use of parallel working hardware. Bionic Optimization means finding the best solution to a problem using methods found in nature. As Evolutionary Strategies and Particle Swarm Optimization seem to be the most important methods for structural optimization, we primarily focus on them. Other methods such as neural nets or ant colonies are more suited to control or process studies, so their basic ideas are outlined in order to motivate readers to start using them. A set of sample applications shows how Bionic Optimization works in practice. From academic studies on simple fra...

  17. Material design related investigation. Investigation on the bionic design; Zairyo sekkei kankei chosa. Bionic design ni kansuru chosa

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1994-03-01

    The biomolecular characteristics were analyzed to establish the basic technology for the utilization of artificial joint, liver and muscle. The rise in functional grade of biomolecules themselves, and inter-biomolecular recognition and bonding rationally and teleologically generates living body`s functions to form the structure and drive the molecules. Energywise extremely advantageous, those functions serve to creatively produce the artificial internal organs and elucidate the function of biotissue, if the tissue and function of living body can be artificially restructured by utilizing the biomolecular mechanism to make the tissue self-proper. It is the concept of bionic desing research. Methodologically, the inter-bimolecular action is to be synthetically analyzed through bio/physicochemistry-based computer simulation. The artificial materials excelling in adaptability to the living body are to be developed by analyzing the mechanism for the biotissue. The molecules-driving function is also to be analyzed which is generated dy the high-grade bonding of muscular and other high biomolecules. 280 refs., 69 figs., 9 tabs.

  18. Computer simulation of rolling wear on bionic non-smooth convex surfaces

    Institute of Scientific and Technical Information of China (English)

    HAN Zhi-wu; LIU Zu-bin; YANG Zhuo-juan; YAN Yu-ying; REN Lu-quan

    2004-01-01

    The study of bionics has found that the skins of many burrow animals which live in soil and stone conditions have an anti wear function, and which is related to their body surfaces' non-smooth morphology. In the present study, bionic non-smooth surfaces are used in roll surface design, and roll models with convex non-smooth surfaces are developed. The rolling wear of non-smooth roll in steel rolling is simulated by the FEM software-ANSYS. The equivalent stress, the node friction stress, and the node contact pressure between the roll and the rolling piece are calculated; and the anti-wear mechanism is analyzed.

  19. The UC Softhand: Light Weight Adaptive Bionic Hand with a Compact Twisted String Actuation System

    OpenAIRE

    Mahmoud Tavakoli; Rafael Batista; Lucio Sgrigna

    2015-01-01

    In this paper, we present the design and development of the UC-Softhand. The UC Softhand is a low cost, Bionic and adaptive hand that takes advantage of compliant joints. By optimization of the actuation strategy as well as the actuation mechanism, we could develop an anthropomorphic hand that embeds three actuators, transmission mechanisms, controllers and drivers in the palm of the hand, and weighs only 280 g, making it one of the lightest bionic hands that has been created so far. The key ...

  20. Rena Tangens & padeluun "bionic" / Rena Tangens, Padeluun ; interv. Tilman Baumgärtel

    Index Scriptorium Estoniae

    Tangens, Rena

    2006-01-01

    1997. a. Bielefeldis tehtud intervjuu sealsete kunstnike Rena Tangensi ja Padeluuniga, kes 1984. a. asutasid galerii "Art d'Ameublement", 1989. a. lõid elektroonilise kirjakasti "Bionic", osalevad Avaliku Liikuva ja Liikumatu Andmeringluse Edendamise Ühingu (FoeBud e. V:) liikmetena kongressidel, küsitlustel jm. ning peavad oma tegevust kunstiteose osaks

  1. Research advances in coupling bionic optimization design method for CNC machine tools based on ergonomics

    Directory of Open Access Journals (Sweden)

    Shihao LIU

    2015-06-01

    Full Text Available Currently, most Chinese CNC machine tools' dynamic and static performances have large gap comparing with the similar foreign products, and the CNC machine tools users' human-centered design demand are ignored, which results in that the domestic CNC machine tools' overall competitiveness is relatively low. In order to solve the above problem, the ergonomics and coupling bionics are adopted to study collaborative optimization design method for CNC machine tools based on the domestic and foreign machine tool design method research achievement. The CNC machine tools' "man-machine-environment" interaction mechanism can be built by combining with ergonomic, and then the CNC ergonomic design criteria is obtained. Taking the coupling bionics as theoretical basis, the biological structures "morphology-structure-function-adaptive growth" multiple coupling mechanism can be studied, and the mechanical performance benefits structure can be extracted, then the CNC machine tools structural coupling bionic design technology is obtained by combining with the similarity principle. Combination of CNC machine tools' ergonomic design criteria and coupling bionic design technology, and considering the CNC machine tool performance's interaction and coupling mechanisms, a new multi-objective optimization design method can be obtained, which is verified through CNC machine tools' prototype experiments. The new optimization design method for CNC machine tools can not only help improve the whole machine's dynamic and static performance, but also has a bright prospect because of the "man-oriented" design concept.

  2. Experimental Study of Reciprocating Friction between Rape Stalk and Bionic Nonsmooth Surface Units

    Directory of Open Access Journals (Sweden)

    Zheng Ma

    2015-01-01

    Full Text Available Background. China is the largest producer of rape oilseed in the world; however, the mechanization level of rape harvest is relatively low, because rape materials easily adhere to the cleaning screens of combine harvesters, resulting in significant cleaning losses. Previous studies have shown that bionic nonsmooth surface cleaning screens restrain the adhesion of rape materials, but the underlying mechanisms remain unclear. Objective. The reciprocating friction between rape stalk and bionic nonsmooth metal surface was examined. Methods. The short-time Fourier transform method was used to discriminate the stable phase of friction signals and the stick-lag distance was defined to analyze the stable reciprocating friction in a phase diagram. Results. The reciprocating friction between rape stalk and metal surface is a typical stick-slip friction, and the bionic nonsmooth metal surfaces with concave or convex units reduced friction force with increasing reciprocating frequency. The results also showed that the stick-lag distance of convex surface increased with reciprocating frequency, which indicated that convex surface reduces friction force more efficiently. Conclusions. We suggest that bionic nonsmooth surface cleaning screens, especially with convex units, restrain the adhesion of rape materials more efficiently compared to the smooth surface cleaning screens.

  3. Electrocardiogram de-noising based on forward wavelet transform translation invariant application in bionic wavelet domain

    Indian Academy of Sciences (India)

    Mourad Talbi

    2014-08-01

    In this paper, we propose a new technique of Electrocardiogram (ECG) signal de-noising based on thresholding of the coefficients obtained from the application of the Forward Wavelet Transform Translation Invariant (FWT_TI) to each Bionic Wavelet coefficient. The De-noise De-noised ECG is obtained from the application of the inverse of BWT (BWT−1) to the de-noise de-noised bionic wavelet coefficients. For evaluating this new proposed de-noising technique, we have compared it to a thresholding technique in the FWT_TI domain. Preliminary tests of the application of the two de-noising techniques were constructed on a number of ECG signals taken from MIT-BIH database. The obtained results from Signal to Noise Ratio (SNR) and Mean Square Error (MSE) computations showed that our proposed de-noising technique outperforms the second technique. We have also compared the proposed technique to the thresholding technique in the bionic wavelet domain and this comparison was performed by SNR improvement computing. The obtained results from this evaluation showed that the proposed technique also outperforms the de-noising technique based on bionic wavelet coefficients thresholding.

  4. Study on quantitative relation between characteristics of striature bionic coupling unit and wear resistance of gray cast iron

    Science.gov (United States)

    Pang, Zuobo; Zhou, Hong; Zhang, Peng; Cong, Dalong; Meng, Chao; Wang, Chuanwei; Ren, Luquan

    2015-03-01

    In order to improve the wear resistance of gray cast iron guide rail, striature bionic coupling units of different characteristics were manufactured by laser surface remelting. Wear behavior of gray cast iron with striature bionic coupling units has been studied under dry sliding condition at room temperature using a homemade linear reciprocating wear testing machine. The wear resistance was evaluated by means of weight loss measurement and wear morphology. The results indicated that there is a relationship between weight loss and the area of striature bionic coupling units and α: Δm = Δm0 - 0.0212S × cos α - 0.0241S × sin α.

  5. 仿生传感器技术发展探究%Research on Development of Bionic Sensing Technology

    Institute of Scientific and Technical Information of China (English)

    韦炜

    2012-01-01

    总体介绍了仿生传感技术的发展状况.从仿生传感器的产生和含义入手,着重论述了其类型和基本原理,进一步阐明了仿生传感器的发展趋势.对仿生传感技术的进一步研究具有启示作用.%General introduced the development of bionic sensor technology. Starting from production and meaning of bionic sensor, focuses on its types and basic principles, and further to elucidate the trend of bionic sensor. It has enlightenment function for further study of bionic sensing technology.

  6. Mechanism Simulation and Optimal Design of Five-Link Bionic Joint Driven by Two Antagonistic Pneumatic Muscles

    OpenAIRE

    Binrui Wang; Yinglian Jin; Tianhong Yan; Miao Cheng

    2013-01-01

    The five-link parallel mechanism is proposed to improve joint bionic performance, and the kinematics is established for the closed chain joint actuated by two antagonistic artificial pneumatic muscles (PMs). Interference and singularity constraints are analyzed, and the joint torque model is given based on the spring-damp dynamics. Through extracting the spring force term from torque equations, the compliance of bionic joint is derived and expressed as the ratio of angle to spring torque. Ene...

  7. On the generation of bionic pulses with conventional piezoelectric transducers by proper design of the input driving function

    OpenAIRE

    Cobo-Parra, P.; CarbÓ-FitÉ, R.

    1994-01-01

    This paper concerns with the capacity of piezoelectric transducers to generate bionic pulses, by proper design of the input driving function which equalizes their transfer function. Firstly, the transfer function is measured by performing the transducer in the pinger mode. The measured transfer function, together with the parameters of the desired bionic pulse (i.e. central frequency, stretching and chirp), are the inputs to a program to calculate the voltage function which should drive the t...

  8. Principles of electromagnetic protection bionics and research of fault self-recovery mechanism

    Institute of Scientific and Technical Information of China (English)

    Yuan Liang; Man Menghua; Chang Xiaolong

    2014-01-01

    As we have borrowed the wisdom from biological neural network, the characteristic of interference- proof in information transferring process has been carefully studied. Our study includes the response of electrical-interference-proof circuit in electromagnetic environment, by means of bionics redesign. In this way, new principles, new technics and new ways are adopted to solve the unavoidable situations in traditional electro- magnet protection design. Based on the Boolean model, the complex bionic topological networks were firstly built and the charactoristics of degeneracy were analyzed, then the bidirectional actions between degeneracy in networks and the robustness of functions were proved in order to fill up the gap to deal with the need of interference-proof. Based on the creation of the neuron networks and the electrical synapses ' charac- teristic of plasticity, the impact of the distribution in the weight of synapse on the character of network self- recovery was studied afterwards so that the corresponding mechanism could be defined.

  9. As Stainless as the Lotus--Fabricating Bionic Polymer Surface with a Self-cleaning Function

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ The artificial imitation of natural creatures has always been a forever dream in the fairy tales or scientific fictions. Thanks to the development of science and technology, this long-cherished dream has come true in some ways. Bionics, a branch of science concerned with applying the data and mechanisms of the functions of biological system to the solution of engineering problems, has become one of the frontier areas of science in the 21 st century, as what was shown in many reviews and books published in the late 20th century. In fact, human being got inspiration from the nature and created lots of bionic products in the past decades, e.g. the airplane and the radar.However, few examples are given in molecular-level or nano-scale artificial plant surface.

  10. Knee Joint Optimization Design of Intelligent Bionic Leg Based on Genetic Algorithm

    Directory of Open Access Journals (Sweden)

    Hualong Xie

    2014-09-01

    Full Text Available Intelligent bionic leg (IBL is an advanced prosthesis which can maximum functionally simulate and approach the motion trajectory of human leg. Knee joint is the most important bone of human leg and its bionic design has great significance to prosthesis performance. The structural components of IBL are introduced and virtual prototype is given. The advantages of 4-bar knee joint are analyzed and are adopted in IBL design. The kinematics model of 4-bar knee joint is established. The objective function, constraint condition, parameters selection and setting of genetic algorithm are discussed in detail. Based on genetic algorithm, the optimization design of IBL knee joint is done. The optimization results indicate that the 4-bar mechanism can achieve better anthropomorphic characteristics of human knee joint.

  11. Microelectrode Recording of Tissue Neural Oscillations for a Bionic Olfactory Biosensor

    Institute of Scientific and Technical Information of China (English)

    Qingjun Liu; Fenni Zhang; Ning Hu; Hua Wang; Kuen Jimmy Hsia; Ping Wang

    2012-01-01

    In olfactory research,neural oscillations exhibit excellent temporal regularity,which are functional and necessary at the physiological and cognitive levels.In this paper,we employed a bionic tissue biosensor which treats intact epithelium as sensing element to record the olfactory oscillations extracellularly.After being stimulated by odorant of butanedione,the olfactory receptor neurons generated different kinds of oscillations,which can be described as pulse firing oscillation,transient firing oscillation,superposed firing oscillation,and sustained firing oscillation,according to their temporal appearances respectively.With a time-frequency analysis of sonogram,the oscillations also demonstrated different frequency properties,such as δ,θ,α,β and γ oscillations.The results suggest that the bionic biosensor cooperated with sonogram analysis can well improve the investigation of olfactory oscillations,and provide a novel model for artificial olfaction sensor design.

  12. Numerical simulations of self-propelled swimming of 3D bionic fish school

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    Numerical simulations of self-propelled swimming of a three dimensional bionic fish and fish school in a viscous fluid are carried out. This is done with the assistance of a parallel software package produced for 3D moving boundary problems. This computational fluid dynamics package combines the adaptive multi-grid finite volume method, the immersed boundary method and VOF (volume of fluid) method. By using the package results of the self-propelled swimming of a 3D bionic fish and fish school in a vis- cous fluid are obtained. With comparison to the existing experimental measurements of living fishes, the predicted structure of vortical wakes is in good agreement with the measurements.

  13. Numerical simulations of self-propelled swimming of 3D bionic fish school

    Institute of Scientific and Technical Information of China (English)

    WU ChuiJie; WANG Liang

    2009-01-01

    Numerical simulations of self-propelled swimming of a three dimensional bionic fish and fish school in a viscous fluid are carried out. This is done with the assistance of a parallel software package producedfor 3D moving boundary problems. This computational fluid dynamics package combines the adaptive multi-grid finite volume method, the immersed boundary method and VOF (volume of fluid) method. By using the package results of the self-propelled swimming of a 3D bionic fish and fish school in a vis cous fluid are obtained. With comparison to the existing experimental measurements of living fishes, the predicted structure of vortical wakes is in good agreement with the measurements.

  14. The UC Softhand: Light Weight Adaptive Bionic Hand with a Compact Twisted String Actuation System

    Directory of Open Access Journals (Sweden)

    Mahmoud Tavakoli

    2015-12-01

    Full Text Available In this paper, we present the design and development of the UC-Softhand. The UC Softhand is a low cost, Bionic and adaptive hand that takes advantage of compliant joints. By optimization of the actuation strategy as well as the actuation mechanism, we could develop an anthropomorphic hand that embeds three actuators, transmission mechanisms, controllers and drivers in the palm of the hand, and weighs only 280 g, making it one of the lightest bionic hands that has been created so far. The key aspect of the UC Softhand is utilization of a novel compact twisted string actuation mechanism, that allows a considerable weight and cost reduction compared to its predecessor.

  15. Autonomous Navigation for Unmanned Aerial Vehicles Based on Chaotic Bionics Theory

    Institute of Scientific and Technical Information of China (English)

    Xiao-lei Yu; Yong-rong Sun; Jian-ye Liu; Bing-wen Chen

    2009-01-01

    In this paper a new reactive mechanism based on perception-action bionics for multi-sensory integration applied to Un-manned Aerial Vehicles (UAVs) navigation is proposed. The strategy is inspired by the olfactory bulb neural activity observed in rabbits subject to external stimuli. The new UAV navigation technique exploits the use of a muitiscroil chaotic system which i sable to be controlled in real-time towards less complex orbits, like periodic orbits or equilibrium points, considered as perceptive orbits. These are subject to real-time modifications on the basis of environment changes acquired through a Synthetic Aperture Radar (SAR) sensory system. The mathematical details of the approach are given including simulation results in a virtual en-vironment. The results demonstrate the capability of autonomous navigation for UAV based on chaotic bionics theory in com-plex spatial environments.

  16. A bionic approach to mathematical modeling the fold geometry of deployable reflector antennas on satellites

    Science.gov (United States)

    Feng, C. M.; Liu, T. S.

    2014-10-01

    Inspired from biology, this study presents a method for designing the fold geometry of deployable reflectors. Since the space available inside rockets for transporting satellites with reflector antennas is typically cylindrical in shape, and its cross-sectional area is considerably smaller than the reflector antenna after deployment, the cross-sectional area of the folded reflector must be smaller than the available rocket interior space. Membrane reflectors in aerospace are a type of lightweight structure that can be packaged compactly. To design membrane reflectors from the perspective of deployment processes, bionic applications from morphological changes of plants are investigated. Creating biologically inspired reflectors, this paper deals with fold geometry of reflectors, which imitate flower buds. This study uses mathematical formulation to describe geometric profiles of flower buds. Based on the formulation, new designs for deployable membrane reflectors derived from bionics are proposed. Adjusting parameters in the formulation of these designs leads to decreases in reflector area before deployment.

  17. Simulation of evacuation processes using a bionics-inspired cellular automaton model for pedestrian dynamics

    OpenAIRE

    Kirchner, Ansgar; Schadschneider, Andreas

    2002-01-01

    We present simulations of evacuation processes using a recently introduced cellular automaton model for pedestrian dynamics. This model applies a bionics approach to describe the interaction between the pedestrians using ideas from chemotaxis. Here we study a rather simple situation, namely the evacuation from a large room with one or two doors. It is shown that the variation of the model parameters allows to describe different types of behaviour, from regular to panic. We find a non-monotoni...

  18. Research advances in coupling bionic optimization design method for CNC machine tools based on ergonomics

    OpenAIRE

    Shihao LIU; Yanbin DU; Guo, Zhizhong

    2015-01-01

    Currently, most Chinese CNC machine tools' dynamic and static performances have large gap comparing with the similar foreign products, and the CNC machine tools users' human-centered design demand are ignored, which results in that the domestic CNC machine tools' overall competitiveness is relatively low. In order to solve the above problem, the ergonomics and coupling bionics are adopted to study collaborative optimization design method for CNC machine tools based on the domestic and foreign...

  19. Dynamic model and performance analysis of landing buffer for bionic locust mechanism

    Science.gov (United States)

    Chen, Dian-Sheng; Zhang, Zi-Qiang; Chen, Ke-Wei

    2015-10-01

    The landing buffer is an important problem in the research on bionic locust jumping robots, and the different modes of landing and buffering can affect the dynamic performance of the buffering process significantly. Based on an experimental observation, the different modes of landing and buffering are determined, which include the different numbers of landing legs and different motion modes of legs in the buffering process. Then a bionic locust mechanism is established, and the springs are used to replace the leg muscles to achieve a buffering effect. To reveal the dynamic performance in the buffering process of the bionic locust mechanism, a dynamic model is established with different modes of landing and buffering. In particular, to analyze the buffering process conveniently, an equivalent vibration dynamic model of the bionic locust mechanism is proposed. Given the support forces of the ground to the leg links, which can be obtained from the dynamic model, the spring forces of the legs and the impact resistance of each leg are the important parameters affecting buffering performance, and evaluation principles for buffering performance are proposed according to the aforementioned parameters. Based on the dynamic model and these evaluation principles, the buffering performances are analyzed and compared in different modes of landing and buffering on a horizontal plane and an inclined plane. The results show that the mechanism with the ends of the legs sliding can obtain a better dynamic performance. This study offers primary theories for buffering dynamics and an evaluation of landing buffer performance, and it establishes a theoretical basis for studies and engineering applications.

  20. A DNA Structure-Based Bionic Wavelet Transform and Its Application to DNA Sequence Analysis

    OpenAIRE

    Fei Chen; Yuan-Ting Zhang

    2003-01-01

    DNA sequence analysis is of great significance for increasing our understanding of genomic functions. An important task facing us is the exploration of hidden structural information stored in the DNA sequence. This paper introduces a DNA structure-based adaptive wavelet transform (WT) – the bionic wavelet transform (BWT) – for DNA sequence analysis. The symbolic DNA sequence can be separated into four channels of indicator sequences. An adaptive symbol-to-number mapping, determined from the s...

  1. Unifying inflation with late-time acceleration by a BIonic system

    OpenAIRE

    Alireza Sepehri; Farook Rahaman; Mohammad Reza Setare; Anirudh Pradhan; Salvatore Capozziello; Iftikar Hossain Sardar

    2015-01-01

    We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After...

  2. Dynamic model and performance analysis of landing buffer for bionic locust mechanism

    Science.gov (United States)

    Chen, Dian-Sheng; Zhang, Zi-Qiang; Chen, Ke-Wei

    2016-06-01

    The landing buffer is an important problem in the research on bionic locust jumping robots, and the different modes of landing and buffering can affect the dynamic performance of the buffering process significantly. Based on an experimental observation, the different modes of landing and buffering are determined, which include the different numbers of landing legs and different motion modes of legs in the buffering process. Then a bionic locust mechanism is established, and the springs are used to replace the leg muscles to achieve a buffering effect. To reveal the dynamic performance in the buffering process of the bionic locust mechanism, a dynamic model is established with different modes of landing and buffering. In particular, to analyze the buffering process conveniently, an equivalent vibration dynamic model of the bionic locust mechanism is proposed. Given the support forces of the ground to the leg links, which can be obtained from the dynamic model, the spring forces of the legs and the impact resistance of each leg are the important parameters affecting buffering performance, and evaluation principles for buffering performance are proposed according to the aforementioned parameters. Based on the dynamic model and these evaluation principles, the buffering performances are analyzed and compared in different modes of landing and buffering on a horizontal plane and an inclined plane. The results show that the mechanism with the ends of the legs sliding can obtain a better dynamic performance. This study offers primary theories for buffering dynamics and an evaluation of landing buffer performance, and it establishes a theoretical basis for studies and engineering applications.

  3. Bionic Intelligent Optimization Algorithm Based on MMAS and Fish-Swarm Algorithm

    OpenAIRE

    Jingjing Yang; Benzhen Guo; Jixiang Gou; Xiao Zhang

    2013-01-01

    With large number of ants, the ant colony algorithm would always take a long time or is rather difficult to find the optimal path from complex chapter path, further more, there exists a contradiction between stagnation, accelerated convergence and precocity. In this paper, we propose a new bionic optimization algorithm. The main idea of the algorithm is to introduce the horizons concept in the MMAS fish swarm algorithm, so it would take shorter time to find the optimal path with numerous ants...

  4. Bionic Ears: Their Development and Future Advances Using Neurotrophins and Inherently Conducting Polymers

    OpenAIRE

    Clark, Graeme M.; Gordon Wallace

    2004-01-01

    The development of the multiple-channel bionic ear for hearing and speech understanding in profoundly deaf people is the result of integrating biological and physical sciences with engineering. It is the first clinically successful restoration of sensory and brain function, and brings electronic technology into a direct functional relationship with human consciousness. It presently transmits essential place and coarse temporal information for the coding of frequency, but the fine temporal and...

  5. An Active Compensation System for Robot Vision in Rough Environment Based on Bionic Eye

    OpenAIRE

    Jun Luo; Hengyu Li; Jinbo Chen; Chao Li; Shaorong Xie

    2011-01-01

    Motion targets tracking techniques is one of the most important aspects in the fields of mobile robot research under unknown environments. To solve the problem of unstable vision resulted from the uncertainties, a method of active compensation for robot visual was proposed based on the principle of bionic eye movements. According to oculomotor neural circuits, an adaptive oculomotor control model of eye movements was established, and the model includes that VOR, smooth purisuit and compound e...

  6. Bionic Optimization Based Stability and Congestion Aware Routing Algorithm for Airborne Highly Dynamic Network

    OpenAIRE

    Yunlong Yu; Le Ru; Sheng Mao; Kangning Sun; Qiangqiang Yu; Kun Fang

    2016-01-01

    Airborne highly dynamic ad hoc UAV network has features of high node mobility, fast changing network topology, and complex application environment. The performance of traditional routing algorithms is so poor over aspects such as end to end delay, data packet delivery ratio, and routing overhead that they cannot provide efficient communication for multi-UAVs carrying out missions synergistically. A bionic optimization based stability and congestion aware routing algorithm—BSCAR algorithm—is p...

  7. Bionic ankle–foot prosthesis normalizes walking gait for persons with leg amputation

    OpenAIRE

    Herr, Hugh M.; Grabowski, Alena M

    2011-01-01

    Over time, leg prostheses have improved in design, but have been incapable of actively adapting to different walking velocities in a manner comparable to a biological limb. People with a leg amputation using such commercially available passive-elastic prostheses require significantly more metabolic energy to walk at the same velocities, prefer to walk slower and have abnormal biomechanics compared with non-amputees. A bionic prosthesis has been developed that emulates the function of a biolog...

  8. Design and Analysis of Bionic Cutting Blades Using Finite Element Method

    Directory of Open Access Journals (Sweden)

    Mo Li

    2015-01-01

    Full Text Available Praying mantis is one of the most efficient predators in insect world, which has a pair of powerful tools, two sharp and strong forelegs. Its femur and tibia are both armed with a double row of strong spines along their posterior edges which can firmly grasp the prey, when the femur and tibia fold on each other in capturing. These spines are so sharp that they can easily and quickly cut into the prey. The geometrical characteristic of the praying mantis’s foreleg, especially its tibia, has important reference value for the design of agricultural soil-cutting tools. Learning from the profile and arrangement of these spines, cutting blades with tooth profile were designed in this work. Two different sizes of tooth structure and arrangement were utilized in the design on the cutting edge. A conventional smooth-edge blade was used to compare with the bionic serrate-edge blades. To compare the working efficiency of conventional blade and bionic blades, 3D finite element simulation analysis and experimental measurement were operated in present work. Both the simulation and experimental results indicated that the bionic serrate-edge blades showed better performance in cutting efficiency.

  9. Design Principles of the Non-smooth Surface of Bionic Plow Moldboard

    Institute of Scientific and Technical Information of China (English)

    Luquan Ren; Shiqiao Deng; Jingchun Wang; Zhiwu Han

    2004-01-01

    The diverse non-smooth body surfaces to reduce soil adhesion are the evolutional results for the soil animals to fit the adhesive and wet environment and can be used as a biological basis for the design of bionic plow moldboard. The model surfaces for bionic simulation should be taken from soil animal digging organs, on which the soil motion is similar to what is on the surface of moldboard. By analyzing the distribution of non-smooth units on the body surface of the ground beetle jaw and the soil moving stresses, the design principles of the bionic moldboard for the local and the whole moldboard were presented respectively. As well, the effect of soil moving speed on reducing adhesion, the dimensions relationship between soil particles and non-smooth convexes, the relationship between the enveloping surface of non-smooth convexes and the initial smooth surface of the plow body, and the convex types of the sphere coronal and the pangolin scales, etc. were discussed.

  10. The Mechanism of Drag Reduction around Bodies of Revolution Using Bionic Non-Smooth Surfaces

    Institute of Scientific and Technical Information of China (English)

    Li-mei Tian; Lu-quan Ren; Qing-ping Liu; Zhi-wu Han; Xiao Jiang

    2007-01-01

    Bionic non-smooth surfaces (BNSS) can reduce drag. Much attention has been paid to the mechanism of shear stress reduction by riblets. The mechanism of pressure force reduction by bionic non-smooth surfaces on bodies of revolution has not been, well investigated. In this work CFD simulation has revealed the mechanism of drag reduction by BNSS, which may work in three ways. First, BNSS on bodies of revolution may lower the surface velocity of the medium, which prevents the sudden speed up of air on the cross section. So the bottom pressure of the model would not be disturbed sharply, resulting in less energy loss and drag reduction. Second, the magnitude of vorticity induced by the bionic model becomes smaller because, due to the sculpturing, the growth of tiny air bubbles is avoided. Thus the large moment of inertia induced by large air bubble is reduced. The reduction of the vorticity could reduce the dissipation of the eddy. So the pressure force could also be reduced. Third, the thickness of the momentum layer on the model becomes less which, according to the relationship between the drag coefficient and the momentum thickness, reduces drag.

  11. Dynamic bending of bionic flexible body driven by pneumatic artificial muscles(PAMs) for spinning gait of quadruped robot

    Science.gov (United States)

    Lei, Jingtao; Yu, Huangying; Wang, Tianmiao

    2016-01-01

    The body of quadruped robot is generally developed with the rigid structure. The mobility of quadruped robot depends on the mechanical properties of the body mechanism. It is difficult for quadruped robot with rigid structure to achieve better mobility walking or running in the unstructured environment. A kind of bionic flexible body mechanism for quadruped robot is proposed, which is composed of one bionic spine and four pneumatic artificial muscles(PAMs). This kind of body imitates the four-legged creatures' kinematical structure and physical properties, which has the characteristic of changeable stiffness, lightweight, flexible and better bionics. The kinematics of body bending is derived, and the coordinated movement between the flexible body and legs is analyzed. The relationship between the body bending angle and the PAM length is obtained. The dynamics of the body bending is derived by the floating coordinate method and Lagrangian method, and the driving force of PAM is determined. The experiment of body bending is conducted, and the dynamic bending characteristic of bionic flexible body is evaluated. Experimental results show that the bending angle of the bionic flexible body can reach 18°. An innovation body mechanism for quadruped robot is proposed, which has the characteristic of flexibility and achieve bending by changing gas pressure of PAMs. The coordinated movement of the body and legs can achieve spinning gait in order to improve the mobility of quadruped robot.

  12. High-sensitive and high-efficient biochemical analysis method using a bionic electronic eye in combination with a smartphone-based colorimetric reader system.

    Science.gov (United States)

    Kaiqi Su; Quchao Zou; Ning Hu; Ping Wang

    2015-08-01

    Bionic electronic eye (Bionic e-Eye), a developed smartphone-based colorimetric reader system, consists of smartphone or pad (iPhone 4s or iPad 3) as detection instrument and portable accessory as illumination provider, integrating with a wide-angle lens, a piece of lowest-power electro luminescent and a custom-made dark hood. A 96-well microtiter plate (MTP) was positioned on the electro luminescent and Bionic e-Eye captures the detection images by the back camera of smartphone. Being similar to human visual system, the hue, saturation and value (HSV, also called hex cone model) color model was employed in image processing algorithm of Bionic e-Eye. Optimized system dimension was determined by the system steadiness experiment of different photograph distances. Moreover, the commercially available BCA protein assay and CCK8 cell number assay were carried out to evaluate this Bionic e-Eye. Analytical performance of Bionic e-Eye had the better precision, higher sensitivity than microtiter plate reader (MTPR) and previous smartphone-based colorimetric reader for both two assays. Also, Bionic e-Eye using optical image detection had simultaneous and synchronous working mode, while MPTR using machine moving detection had asynchronous working mode in high throughput detection. Therefore, Bionic e-Eye will be an ideal point-of-care (POC) colorimetric detection device in the field of clinical application, industrial quality control, environment monitoring, and food assessment. PMID:26738081

  13. Numerical Simulation of the Effect of Bionic Serrated Structures on the Aerodynamic Noise of a Circular Cylinder

    Institute of Scientific and Technical Information of China (English)

    Lei Shi; Chengchun Zhang; Jing Wang; Luquan Ren

    2012-01-01

    Flow control can effectively reduce the aerodynamic noise radiated from a circular cylinder.As one of the flow control methods,a bionic method,inspired by the serrations at the leading edge of owls' wing,was proposed in this paper.The effects of bionic serrated structures arranged on the upper and lower sides of a cylinder on the aerodynamic and aeroacoustic performance of the cylinder were numerically investigated.At a free stream speed of 24.5 m·s-1,corresponding to Reynolds number of 1.58 × 104,the simulation results indicate that the bionic serrated structures can decrease the frequency of the vortex shedding and control the fluctuating aerodynamic force acting on the cylinder,thus reduce the aerodynamic noise.A qualitative-view of the vorticity in the wake of the cylinder suggest that the serrated structures reduce aerodynamic sound by suppressing the unsteady motion of vortices.

  14. Effect of the microhardness difference between base metal and bionic coupling unit on wear resistance of gray cast iron

    Science.gov (United States)

    Pang, Zuobo; Zhou, Hong; Chang, Fang; Zhang, Peng; Cong, Dalong; Meng, Chao; Wang, Chuanwei; Ren, Luquan

    2015-12-01

    In order to improve the wear resistance of gray cast iron guide rail, the samples with different microhardness difference between bionic coupling units and base metal were manufactured by laser surface remelting. Wear behavior of gray cast iron with bionic coupling units has been studied under dry sliding condition at room temperature using a homemade liner reciprocating wear testing machine. The wear resistance was evaluated by means of weight loss measurement and wear morphology. The results indicated that when the microhardness difference is 561 HV0.2, the wear resistance of sample is the best.

  15. 仿生纺品与服装%Bionic Textiles and Garment

    Institute of Scientific and Technical Information of China (English)

    陈丽华

    2011-01-01

    对目前国内外研究开发的仿生纺织品与服装进行了综述,包括仿生功能纺织品与服装,智能仿生纺织品与服装.详细介绍了各类仿生纺织品与服装的仿生原理、主要产品及其应用.%The study progress of bionic textiles and garment in recent years were reviewed. The principle of functional textiles and intelligent textiles were discussed in detail. The relevant products and its appalication were also introduced.

  16. A simple and accurate numerical network flow model for bionic micro heat exchangers

    Energy Technology Data Exchange (ETDEWEB)

    Pieper, M.; Klein, P. [Fraunhofer Institute (ITWM), Kaiserslautern (Germany)

    2011-05-15

    Heat exchangers are often associated with drawbacks like a large pressure drop or a non-uniform flow distribution. Recent research shows that bionic structures can provide possible improvements. We considered a set of such structures that were designed with M. Hermann's FracTherm {sup registered} algorithm. In order to optimize and compare them with conventional heat exchangers, we developed a numerical method to determine their performance. We simulated the flow in the heat exchanger applying a network model and coupled these results with a finite volume method to determine the heat distribution in the heat exchanger. (orig.)

  17. Design of a Robot End-Effector Grabbing Mechanism Based on a Bionic Snake Mouth

    OpenAIRE

    Fu Zhuang; Zhou Hangfei; Liu Zijuan; Fei Jian; Yan Weixin; Zhao Yanzheng

    2013-01-01

    Inspired by the bite and swallowing function of a snake’s mouth, a robot end‐effector grabbing mechanism was designed. The grabbing movement is realized by the ‘bite’ function of the bionic snake mouth actuator, and the ‘swallowing’ function insures a continuous grip on the object. To implement the continuous grip function of the new robot end‐effector, the complex motion of a snake’s mouth is simplified into three basic movements based on the anatomy of a snake’s mouth and with a combination...

  18. Tangent Resistance of Soil on Moldboard and the Mechanism of Resistance Reduction of Bionic Moldboard

    Institute of Scientific and Technical Information of China (English)

    Deng Shi-qiao; Ren Lu-quan; Liu Yan; Han Zhi-wu

    2005-01-01

    The tangent resistance on the interface of the soil-moldboard is an important component of the resistance to moving soil . We developed simplified mechanical models to analyze this resistance. We found that it is composed of two components, the frictional and adhesive resistances. These two components originate from the soil pore, which induced a capillary suction effect, and the soil-moldboard contact area produced tangent adhesive resistance. These two components varied differently with soil moisture. Thus we predicted that resistance reduction against soil exerted on the non-smooth bionic moldboard is mainly due to the elimination of capillary suction and the reduction of physical-chemical adsorption of soil.

  19. Tea classification based on artificial olfaction using bionic olfactory neural network

    OpenAIRE

    X. L. Yang; Fu, J.; Lou, Z G; L. Y. Wang; Li, G.; Freeman, Walter J III

    2006-01-01

    Based on the research on mechanism of biological olfactory system, we constructed a K-set, which is a novel bionic neural network. Founded on the groundwork of K0, KI and KII sets, the KIII set in the K-set hierarchy simulates the whole olfactory neural system. In contrast to the conventional artificial neural networks, the KIII set operates in nonconvergent 'chaotic' dynamical modes similar to the biological olfactory system. In this paper, an application of electronic nose-brain for tea cla...

  20. Preparation of bionic nanostructures from butterfly wings and their low reflectivity of ultraviolet

    Science.gov (United States)

    Han, Z. W.; Niu, S. C.; Li, W.; Ren, L. Q.

    2013-06-01

    This letter presents a bionic study on Parnassius butterfly wings with a prominent ultraviolet (UV)-selective antireflection effect. An accurate SiO2 inverse replica of the nanostructure with a unique optical function from butterfly wings is prepared in multiscale by combining a sol-gel process and subsequent selective etching. It is found that the original nanostructures of biotemplate are well inherited and the excellent UV-antireflection function could be modulated by tunable parameters such as the replica spacing, width, distribution, and shape as well as formation.

  1. 试论仿生设计在陶瓷产品设计中的应用%The Application of Bionic Design in Ceramic Product Design

    Institute of Scientific and Technical Information of China (English)

    张悦; 吴小华; 任远

    2013-01-01

    仿生设计是一种新的设计思维和方法,文章以理论结合实例的研究方法,从仿生设计的视角研究陶瓷产品的设计开发问题,主要是从肌理仿生、整体形态仿生和局部形态仿生等方面谈仿生设计在陶瓷产品设计中的具体应用问题.仿生设计介入陶瓷产品设计具有启迪陶瓷产品设计师思维,彰显陶瓷产品个性化和趣味性的价值.%The bionic design is one kind of new design thinking and methods,and the article to the study of the theory with examples from bionic design perspective of ceramic product design and development issues,mainly in terms of texture bionic overall shape bionic and partial shape bionic discusses bionic design specific applications in the design of ceramic products.Bionic design intervention ceramic product design inspiration ceramic product designers thinking,highlighting the value of ceramic products personalized and interesting.

  2. Principles of electromagnetic protection bionics and research of fault self-recovery mechanism

    Institute of Scientific and Technical Information of China (English)

    Yuan Liang; Man Menghua; Chang Xiaolong

    2014-01-01

    As we have borrowed the wisdom from biological neural network,the characteristic of interference-proof in information transferring process has been carefully studied. Our study includes the response of electrical-interference-proof circuit in electromagnetic environment,by means of bionics redesign. In this way, new principles,new technics and new ways are adopted to solve the unavoidable situations in traditional electro-magnet protection design. Based on the Boolean model,the complex bionic topological networks were firstly built and the charactoristics of degeneracy were analyzed,then the bidirectional actions between degeneracy in networks and the robustness of functions were proved in order to fill up the gap to deal with the need of interference-proof. Based on the creation of the neuron networks and the electrical synapses ’ charac-teristic of plasticity ,the impact of the distribution in the weight of synapse on the character of network self-recovery was studied afterwards so that the corresponding mechanism could be defined.

  3. Multiadaptive Bionic Wavelet Transform: Application to ECG Denoising and Baseline Wandering Reduction

    Science.gov (United States)

    Sayadi, Omid; Shamsollahi, Mohammad B.

    2007-12-01

    We present a new modified wavelet transform, called the multiadaptive bionic wavelet transform (MABWT), that can be applied to ECG signals in order to remove noise from them under a wide range of variations for noise. By using the definition of bionic wavelet transform and adaptively determining both the center frequency of each scale together with the[InlineEquation not available: see fulltext.]-function, the problem of desired signal decomposition is solved. Applying a new proposed thresholding rule works successfully in denoising the ECG. Moreover by using the multiadaptation scheme, lowpass noisy interference effects on the baseline of ECG will be removed as a direct task. The method was extensively clinically tested with real and simulated ECG signals which showed high performance of noise reduction, comparable to those of wavelet transform (WT). Quantitative evaluation of the proposed algorithm shows that the average SNR improvement of MABWT is 1.82 dB more than the WT-based results, for the best case. Also the procedure has largely proved advantageous over wavelet-based methods for baseline wandering cancellation, including both DC components and baseline drifts.

  4. Multiadaptive Bionic Wavelet Transform: Application to ECG Denoising and Baseline Wandering Reduction

    Directory of Open Access Journals (Sweden)

    Sayadi Omid

    2007-01-01

    Full Text Available We present a new modified wavelet transform, called the multiadaptive bionic wavelet transform (MABWT, that can be applied to ECG signals in order to remove noise from them under a wide range of variations for noise. By using the definition of bionic wavelet transform and adaptively determining both the center frequency of each scale together with the -function, the problem of desired signal decomposition is solved. Applying a new proposed thresholding rule works successfully in denoising the ECG. Moreover by using the multiadaptation scheme, lowpass noisy interference effects on the baseline of ECG will be removed as a direct task. The method was extensively clinically tested with real and simulated ECG signals which showed high performance of noise reduction, comparable to those of wavelet transform (WT. Quantitative evaluation of the proposed algorithm shows that the average SNR improvement of MABWT is 1.82 dB more than the WT-based results, for the best case. Also the procedure has largely proved advantageous over wavelet-based methods for baseline wandering cancellation, including both DC components and baseline drifts.

  5. [Design of plant leaf bionic camouflage materials based on spectral analysis].

    Science.gov (United States)

    Yang, Yu-Jie; Liu, Zhi-Ming; Hu, Bi-Ru; Wu, Wen-Jian

    2011-06-01

    The influence of structure parameters and contents of plant leaves on their reflectance spectra was analyzed using the PROSPECT model. The result showed that the bionic camouflage materials should be provided with coarse surface and spongy inner structure, the refractive index of main content must be close to that of plant leaves, the contents of materials should contain chlorophyll and water, and the content of C-H bond must be strictly controlled. Based on the analysis above, a novel camouflage material, which was constituted by coarse transparent waterproof surface, chlorophyll, water and spongy material, was designed. The result of verifiable experiment showed that the reflectance spectra of camouflage material exhibited the same characteristics as those of plant leaves. The similarity coefficient of reflectance spectrum of the camouflage material and camphor leaves was 0.988 1, and the characteristics of camouflage material did not change after sunlight treatment for three months. The bionic camouflage material, who exhibited a high spectral similarity with plant leaves and a good weather resistance, will be an available method for reconnaissance of hyperspectral imaging hopefully. PMID:21847955

  6. The mechanical properties and microstructure of the bionic alloy-ceramic laminated composite

    International Nuclear Information System (INIS)

    Highlights: → The bionic alloy-ceramic laminated composite was fabricated by EB-PVD. → Mechanical properties and microstructure of laminated composite were investigated. → Laminated composite was heat treated in order to improve the tensile strength. -- Abstract: In the present work, the bionic alloy-ceramic laminated composite was fabricated by electron beam-physical vapor deposition method. The ingots of Ni-20Co-12Cr-4Al (wt.%) and ZrO2-8 mol%Y2O3 were used as the sources of the alloy layer and ceramic layer, respectively. The laminated composite was generally destroyed within the ceramic layer when the interlaminar strength was determined, which revealed that the excellent interface bonding between the ceramic layer and the alloy layer. The obvious diffusion interfaces between the ceramic and alloy layers were readily detected, which was favorable to the mechanical properties of the laminated composite. In the heat treatment process, the diffusion of the flaws within the ceramic layer and/or alloy layer to the interface between the ceramic layer and alloy layer was easier compared with the occurrence of interlaminar diffusion. It was confirmed by the X-ray diffractometer that the reaction of the ceramic layer with alloy layer was simple physical diffusion. The tensile strength of the laminated composite increased first and then decreased as the heat treatment time increased, which was attributed to the mutual reaction of the increase in the relative density with the formation of the flaws located at the interface.

  7. Multiadaptive Bionic Wavelet Transform: Application to ECG Denoising and Baseline Wandering Reduction

    Directory of Open Access Journals (Sweden)

    Mohammad B. Shamsollahi

    2007-01-01

    Full Text Available We present a new modified wavelet transform, called the multiadaptive bionic wavelet transform (MABWT, that can be applied to ECG signals in order to remove noise from them under a wide range of variations for noise. By using the definition of bionic wavelet transform and adaptively determining both the center frequency of each scale together with the T-function, the problem of desired signal decomposition is solved. Applying a new proposed thresholding rule works successfully in denoising the ECG. Moreover by using the multiadaptation scheme, lowpass noisy interference effects on the baseline of ECG will be removed as a direct task. The method was extensively clinically tested with real and simulated ECG signals which showed high performance of noise reduction, comparable to those of wavelet transform (WT. Quantitative evaluation of the proposed algorithm shows that the average SNR improvement of MABWT is 1.82 dB more than the WT-based results, for the best case. Also the procedure has largely proved advantageous over wavelet-based methods for baseline wandering cancellation, including both DC components and baseline drifts.

  8. Design of a Robot End-Effector Grabbing Mechanism Based on a Bionic Snake Mouth

    Directory of Open Access Journals (Sweden)

    Fu Zhuang

    2013-03-01

    Full Text Available Inspired by the bite and swallowing function of a snake’s mouth, a robot end‐effector grabbing mechanism was designed. The grabbing movement is realized by the ‘bite’ function of the bionic snake mouth actuator, and the ‘swallowing’ function insures a continuous grip on the object. To implement the continuous grip function of the new robot end‐effector, the complex motion of a snake’s mouth is simplified into three basic movements based on the anatomy of a snake’s mouth and with a combination of bionics and engineering. The upper jaw consists of a double four‐bar linkage mechanism and the lower jaw mechanism implementing a lateral expansion function are the two elements of the robot end‐effector. The relationship model and the corresponding curves of the actuating force and gripping force are necessary to implement an open‐loop control of the robot end‐effector. Through analysis and simulation, linkage parameters are determined to implement the desired motion.

  9. Progress in bionic information processing techniques for an electronic nose based on olfactory models

    Institute of Scientific and Technical Information of China (English)

    LI Guang; FU Jun; ZHANG Jia; ZHENG JunBao

    2009-01-01

    As a novel bionic analytical technique, an electronic nose, inspired by the mechanism of the biological olfactory system and integrated with modern sensing technology, electronic technology and pattern recognition technology, has been widely used in many areas. Moreover, recent basic research findings in biological olfaction combined with computational neuroscience promote its development both in methodology and application. In this review, the basic information processing principle of biological olfaction and artificial olfaction are summarized and compared, and four olfactory models and their applications to electronic noses are presented. Finally, a chaotic olfactory neural network is detailed and the utilization of several biologically oriented learning rules and its spatiotemporal dynamic prop-ties for electronic noses are discussed. The integration of various phenomena and their mechanisms for biological olfaction into an electronic nose context for information processing will not only make them more bionic, but also perform better than conventional methods. However, many problems still remain, which should be solved by further cooperation between theorists and engineers.

  10. A salient information processing system for bionic eye with application to obstacle avoidance.

    Science.gov (United States)

    Stacey, Ashley; Li, Yi; Barnes, Nick

    2011-01-01

    In this paper we present a visual processing system for bionic eye with a focus on obstacle avoidance. Bionic eye aims at restoring the sense of vision to people living with blindness and low vision. However, current hardware implant technology limits the image resolution of the electrical stimulation device to be very low (e.g., 100 electrode arrays, which is approx. 12 × 9 pixels). Therefore, we need a visual processing unit that extracts salient information in an unknown environment for assisting patients in daily tasks such as obstacle avoidance. We implemented a fully portable system that includes a camera for capturing videos, a laptop for processing information using a state-of-the-art saliency detection algorithm, and a head-mounted display to visualize results. The experimental environment consists of a number of objects, such as shoes, boxes, and foot stands, on a textured ground plane. Our results show that the system efficiently processes the images, effectively identifies the obstacles, and eventually provides useful information for obstacle avoidance. PMID:22255490

  11. Numerical Analysis of Hydrodynamics for Bionic Oscillating Hydrofoil Based on Panel Method.

    Science.gov (United States)

    Xue, Gang; Liu, Yanjun; Zhang, Muqun; Ding, Hongpeng

    2016-01-01

    The kinematics model based on the Slender-Body theory is proposed from the bionic movement of real fish. The Panel method is applied to the hydrodynamic performance analysis innovatively, with the Gauss-Seidel method to solve the Navier-Stokes equations additionally, to evaluate the flexible deformation of fish in swimming accurately when satisfying the boundary conditions. A physical prototype to mimic the shape of tuna is developed with the revolutionized technology of rapid prototyping manufacturing. The hydrodynamic performance for rigid oscillating hydrofoil is analyzed with the proposed method, and it shows good coherence with the cases analyzed by the commercial software Fluent and the experimental data from robofish. Furthermore, the hydrodynamic performance of coupled hydrofoil, which consisted of flexible fish body and rigid caudal fin, is analyzed with the proposed method. It shows that the caudal fin has great influence on trailing vortex shedding and the phase angle is the key factor on hydrodynamic performance. It is verified that the shape of trailing vortex is similar to the image of the motion curve at the trailing edge as the assumption of linear vortex plane under the condition of small downwash velocity. The numerical analysis of hydrodynamics for bionic movement based on the Panel method has certain value to reveal the fish swimming mechanism. PMID:27578959

  12. Use of bionic inspired surfaces for aerodynamic drag reduction on motor vehicle body panels

    Institute of Scientific and Technical Information of China (English)

    Xiao-wen SONG; Guo-geng ZHANG; Yun WANG; Shu-gen HU

    2011-01-01

    Inspired by the successful applications of biological non-smoothness,we introduced bionic non-smooth surfaces as appendices into vehicle body design,aiming to further reduce aerodynamic drag.The size range of the non-smooth units with pits and grooves was determined according to our analysis with the mechanisms underlying non-smooth unit mediated aerodynamic drag reduction.The bionic non-smooth units reported here were designed to adapt the structure of a given vehicle body from the point of boundary layer control that reduces the burst and the loss of turbulent kinetic energy.The engine cover lid and vehicle body cap were individually treated with the non-smooth units,and the treated vehicles were subjected to aerodynamic drag coefficient simulation tests using the computational fluid dynamics (CFD) analysis method.The simulation results showed that,in comparison with smooth surfaces,properly designed non-smooth surfaces can have greater effects on drag reduction.The mechanism underlying drag reduction mediated by non-smooth surfaces was revealed by further analyses,in which the effects of non-smooth and smooth surfaces were directly compared.

  13. A Numerical Study on Pressure Drop in Microchannel Flow with Different Bionic Micro-Grooved Surfaces

    Institute of Scientific and Technical Information of China (English)

    Jing Cui; Yabo Fu

    2012-01-01

    The studies of bionics reveal that some aquatic animals and winged insects have developed an unsmoothed surface possessing good characteristics of drag reduction.In this paper,four types of bionic surfaces,placoid-shaped,V-shaped,riblet-shaped,and ridge-shaped grooved surfaces,are employed as the microchannel surfaces for the purpose of reducing pressure loss.Lattice Boltzmann Method (LBM),a new numerical approach on mescoscopic level,is used to conduct the numerical investigations.The results show that the micro-grooved surfaces possess the drag reduction performance.The existence of the vortices formed within the grooves not only decrease the shear force between fluid and wall but also minimize the contact area between fluid and walls,which can lead to a reduction of pressure loss.The drag reduction coefficient (η) for these four types of micro-structures could be generalized as follows:ηridge-shaped > ηV-shaped > ηplacoid-shaped > ηriblet-shaped.Besides,the geometrical optimizations for the ridge-shaped grooves,which have the highest drag reduction performance,are performed as well.The results suggest that,for the purpose of drag reduction,the ridge-shaped grooves with smaller width to height ratio are recommended for the lower Reynolds number flow,while the ridge-shaped grooves with larger width to height ratio are be more suitable for the larger Reynolds number flow.

  14. An Experimental Study on a Microclimatic Layer of a Bionic Fa(c)ade Inspired by Vertical Greenery

    Institute of Scientific and Technical Information of China (English)

    Toma(z) (S)uklje; Sa(s)o Medved; Ciril Arkar

    2013-01-01

    A microclimatic layer of the green fa(c)ade is proven to have specific temperature and flow conditions on the building envelope.Lower temperatures and wind velocities,and higher relative humidity in the microclimatic layer are the characteristics of vertical greenery systems,which cause lower energy consumption for the cooling and heating of buildings.Despite innovative architectural solutions,there are some drawbacks to applying vertical greenery on building envelopes.In this study,a bionic fa(c)ade that mimics the positive effects and eliminates the disadvantages of green fa(c)ades is presented.The bionic fa(c)ade consists of bionic leaves,which are made of photovoltaic cells and evaporative matrices.A real scale experiment was carried out in the summer to evaluate the potential of the cooling efficiency of the microclimatic layer and a new photovoltaic cooling technique.The results show a good agreement of the thermal performance between the bionic and the green fa(c)ade and up to 20.8 K lower surface temperatures of photovoltaic cells,which increase the daily electricity yield by 6.6%.

  15. Numerical simulation of effect of bionic V-riblet non-smooth surface on tire anti-hydroplaning

    Institute of Scientific and Technical Information of China (English)

    周海超; 王国林; 杨建; 薛开鑫

    2015-01-01

    Inspired by the idea that bionic non-smooth surfaces (BNSS) can reduce fluid adhesion and resistance, and the effect of bionic V-riblet non-smooth structure arranged in tire tread pattern grooves surface on anti-hydroplaning performance was investigated by using computational fluid dynamics (CFD). The physical model of the object (model of V-riblet surface distribution, hydroplaning model) and SSTk−ω turbulence model were established for numerical analysis of tire hydroplaning. With the help of a orthogonal table L16(45), the parameters of V-riblet structure design compared to the smooth structure were analyzed, and obtained the priority level of the experimental factors as well as the best combination within the scope of the experiment. The simulation results show that V-riblet structure can reduce water flow resistance by disturbing the eddy movement in boundary layers. Then, the preferred type of V-riblet non-smooth structure was arranged on the bottom of tire grooves for hydroplaning performance analysis. The results show that bionic V-riblet non-smooth structure can effectively increase hydroplaning velocity and improve tire anti-hydroplaning performance. Bionic design of tire tread pattern grooves is a good way to promote anti-hydroplaning performance without increasing additional groove space, so that tire grip performance and roll noise are avoided due to grooves space enlargement.

  16. 后仿生设计方法探析%Study on Methods of Post-Bionic Design

    Institute of Scientific and Technical Information of China (English)

    韩维生

    2011-01-01

    由Peel休闲椅案例分析入手,探寻其理论依据,通过对比现有几种仿生设计概念,分析了Peel休闲椅的设计特点,进而提出了新的概念——后仿生设计。结合分析后仿生设计案例,并融合木材解剖学、木材纹理强化技术和重组装饰材料设计制造技术等研究成果,进一步归纳出后仿生设计的方法,包括仿机械加工形态法、仿物理处理特征法、移植综合处理特征法及仿珍贵材料切面法,以便为今后开展后仿生设计的研究和应用提供理论基础。%Beginning with the case study on Peel chairs, it seek for its theory basis, and its characteristics were discussed by contrast with some existing bionic design concepts, and then a new concept of post-bionic design was proposed. Referring to some cases of post-bionic design and integrating with some results of wood anatomy, the technology of wood veneer imitation by texture intensify and reconstituted decoration lumber production, four methods for post-bionic design were further induced. These methods include machining shape simulation, physical treated characteristic simulation, integrally treated characteristic simulation and precious materials section simulation, which are the theory basis for the study and application of post-bionic design.

  17. Application of Bionics in Vehicle Safety%仿生学方法在汽车设计上的应用

    Institute of Scientific and Technical Information of China (English)

    马春阳; 周伟; 杨林锋

    2013-01-01

    The authors introduced application of bionics in vehicle design from 3 aspects of shape bionic, function bionic and structure bionic. Through analog simulation, the authors researched design principle and thoughts of bionic concept car of safety-energy conservation and environmental protection, outstanding dynamical performance, low coefficient of windage resis-tance and high strength of framework of body by using automobile fish scale bionic shape software.%  分别从形态仿生、功能仿生和结构仿生三个方面,通过实例介绍了仿生学在汽车设计上的应用,并运用汽车鱼鳞仿生外形软件进行分析,通过模拟仿真,研究了安全节能环保、动力学效能出色、车身风阻系数小、车身构架强度高的仿生概念车的设计原理和思路。

  18. A DNA Structure-Based Bionic Wavelet Transform and Its Application to DNA Sequence Analysis

    Directory of Open Access Journals (Sweden)

    Fei Chen

    2003-01-01

    Full Text Available DNA sequence analysis is of great significance for increasing our understanding of genomic functions. An important task facing us is the exploration of hidden structural information stored in the DNA sequence. This paper introduces a DNA structure-based adaptive wavelet transform (WT – the bionic wavelet transform (BWT – for DNA sequence analysis. The symbolic DNA sequence can be separated into four channels of indicator sequences. An adaptive symbol-to-number mapping, determined from the structural feature of the DNA sequence, was introduced into WT. It can adjust the weight value of each channel to maximise the useful energy distribution of the whole BWT output. The performance of the proposed BWT was examined by analysing synthetic and real DNA sequences. Results show that BWT performs better than traditional WT in presenting greater energy distribution. This new BWT method should be useful for the detection of the latent structural features in future DNA sequence analysis.

  19. Bionic design of integrate structures%整合结构的仿生设计

    Institute of Scientific and Technical Information of China (English)

    汪久根; 张建忠; 薛峥

    2007-01-01

    Natural materials are formed with integral structures. Based on the achievements of our predecessors, the microstructures of some natural materials were decoded, and the configurations of integrated structures were interpreted with graded, porous, fractal and composite forms. The composition and spatial gradients of multiple kinds of physical parameters, which included elastic modulus, hardness, surface tension, stiffness, damping factor, density, heat conduction, electrical resistance factor, magnetic conductive factor, light penetration factor etc, are summarized. The 2-D and 3-D porous structures were analyzed, which had different types of voids and configurations. Then the fractal and gradient fractal rules were described with leaf structure. Moreover, the particulate and fibrous composite structures were developed with the combination of graded, porous and fractal rules. Finally, complex bionic design based on nets of blood vessels and nerves were proposed,which could be applied in structure design of mechanical parts.

  20. The fabrication and property of hydrophilic and hydrophobic double functional bionic chitosan film.

    Science.gov (United States)

    Wang, Xiaohong; Xi, Zhen; Liu, Zhongxin; Yang, Liang; Cao, Yang

    2011-11-01

    A new kind of hydrophobic bionic chitosan film was fabricated by simulating the surface structure of lotus leaf. The titanium oxide nanotube array was used as templates. Scanning electron microscopy (SEM) images show that one side of this films have nano-scale rough surface with spherical protrusions alike the surface of lotus leaf. The diameter of the protrusions is about 100 nm, which is equal to diameter of the titanium oxide nanotube. The water contact angle of chitosan films is up to 120 degrees and it is hydrophobic. The other side of the film is flat and the contact angle is 70 degrees. That indicated that the hydrophilism of natural materials is connected with the surface structures. The double functional chitosan films, one side is hydrophilic, the other is hydrophobic, can be made by an easy method. This method is non-toxic and clean. The double functional chitosan film will improve the application of chitosan films in medicine. PMID:22413283

  1. Super-hydrophobic surfaces from a simple coating method: a bionic nanoengineering approach

    Science.gov (United States)

    Liu, Yuyang; Chen, Xianqiong; Xin, J. H.

    2006-07-01

    Inspired by the self-cleaning behaviour of lotus leaves in nature, we developed a simple coating method that can facilitate the bionic creation of super-hydrophobic surfaces on various substrates, thus providing a feasible way of fabricating super-hydrophobic surfaces for civil and industrial applications. Micro-nanoscale binary structured composite particles of silica/fluoropolymer were prepared using an emulsion-mediated sol-gel process, and then these composite particles were applied to various substrates to mimic the surface microstructures of lotus leaves. Super-hydrophobic surfaces with a water contact angle larger than 150° are obtained, and these super-hydrophobic surfaces are expected to have potential applications for rusting-resistant, anti-fog and self-cleaning treatments.

  2. Super-hydrophobic surfaces from a simple coating method: a bionic nanoengineering approach

    Energy Technology Data Exchange (ETDEWEB)

    Liu Yuyang; Chen Xianqiong; Xin, J H [Nanotechnology Center, ITC, Hong Kong Polytechnic University, Hong Kong (China)

    2006-07-14

    Inspired by the self-cleaning behaviour of lotus leaves in nature, we developed a simple coating method that can facilitate the bionic creation of super-hydrophobic surfaces on various substrates, thus providing a feasible way of fabricating super-hydrophobic surfaces for civil and industrial applications. Micro-nanoscale binary structured composite particles of silica/fluoropolymer were prepared using an emulsion-mediated sol-gel process, and then these composite particles were applied to various substrates to mimic the surface microstructures of lotus leaves. Super-hydrophobic surfaces with a water contact angle larger than 150 deg. are obtained, and these super-hydrophobic surfaces are expected to have potential applications for rusting-resistant, anti-fog and self-cleaning treatments.

  3. Super-hydrophobic surfaces from a simple coating method: a bionic nanoengineering approach

    International Nuclear Information System (INIS)

    Inspired by the self-cleaning behaviour of lotus leaves in nature, we developed a simple coating method that can facilitate the bionic creation of super-hydrophobic surfaces on various substrates, thus providing a feasible way of fabricating super-hydrophobic surfaces for civil and industrial applications. Micro-nanoscale binary structured composite particles of silica/fluoropolymer were prepared using an emulsion-mediated sol-gel process, and then these composite particles were applied to various substrates to mimic the surface microstructures of lotus leaves. Super-hydrophobic surfaces with a water contact angle larger than 150 deg. are obtained, and these super-hydrophobic surfaces are expected to have potential applications for rusting-resistant, anti-fog and self-cleaning treatments

  4. Bionic Intelligent Optimization Algorithm Based on MMAS and Fish-Swarm Algorithm

    Directory of Open Access Journals (Sweden)

    Jingjing Yang

    2013-09-01

    Full Text Available With large number of ants, the ant colony algorithm would always take a long time or is rather difficult to find the optimal path from complex chapter path, further more, there exists a contradiction between stagnation, accelerated convergence and precocity. In this paper, we propose a new bionic optimization algorithm. The main idea of the algorithm is to introduce the horizons concept in the MMAS fish swarm algorithm, so it would take shorter time to find the optimal path with numerous ants, and the introduction of the concept of fish swarm algorithm congestion level would enable the ant colony find the path of global optimization with a strong crowding limit which avoids the emergence of local extreme and improves the accuracy and efficiency of the algorithm.

  5. Microwave assisted-semi bionic extraction of lignan compounds from Fructus Forsythiae by orthogonal design

    Institute of Scientific and Technical Information of China (English)

    TU Qiu-yun; ZHOU Chun-shan; TANG Jian-ping

    2008-01-01

    Microwave assisted-semi bionic extraction (MASBE) process for lignans from Fructus Forsythiae was studied. The influences of solvent pH value, microwave power, dosage of solvent and irradiation time were investigated. Optimum extracting parameters were determined by orthogonal experiments as follows: pH value of solvent at first extraction is 5.5-6.0, that at the second extraction is 7-8; microwave power is 700 W; mass ratio of Fructus Forsythiae to water is 1:12; irradiation time is 10 min, and extracting times is two. Under these optimal conditions, the yield of lignans reaches 0.364%. Compared with the conventionalextraction methods, the MASBE process has the advantages of high extraction rate, high extraction selectivity.

  6. Phylogenetic position of sponges in early metazoan evolution and bionic applications of siliceous sponge spicules

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Sponges are the oldest and the simplest but not primitive multicellular animals. They represent the earliest evolutionary metazoan phylum still extant. It was a long and painful scientific process to position the most enigmatic and mysterious metazoan, the Porifera, into their correct phylogenetic place among the eukaryotes in general and multicellular animals in particular. As living fossils, sponges provide the best evidence for the early evolution of Metazoa. More recently, interest has been focused on the bionic applications of sponges' siliceous spicules, after the discovery of their unique structure and high fiber performance. In this review, the emergence of sponges, evolutionary novelties found in sponges, and the phylogenetic position of sponges in early metazoan evolution are highlighted. In addition, the pre-sent state of knowledge on silicatein-mediated "biosilica" formation in marine sponges, including the involvement of other molecules in silica metabolism and their potential application in nanobiotechnol-ogy and medicine, is given.

  7. Experimental Observation of the Skeletal Adaptive Repair Mechanism and Bionic Topology Optimization Method

    Directory of Open Access Journals (Sweden)

    Kaysar Rahman

    2014-01-01

    Full Text Available Bone adaptive repair theory considers that the external load is the direct source of bone remodeling; bone achieves its maintenance by remodeling some microscopic damages due to external load during the process. This paper firstly observes CT data from the whole self-repairing process in bone defects in rabbit femur. Experimental result shows that during self-repairing process there exists an interaction relationship between spongy bone and enamel bone volume changes of bone defect, that is when volume of spongy bone increases, enamel bone decreases, and when volume of spongy bone decreases, enamel bone increases. Secondly according to this feature a bone remodeling model based on cross-type reaction-diffusion system influenced by mechanical stress is proposed. Finally, this model coupled with finite element method by using the element adding and removing process is used to simulate the self-repairing process and engineering optimization problems by considering the idea of bionic topology optimization.

  8. An Active Compensation System for Robot Vision in Rough Environment Based on Bionic Eye

    Directory of Open Access Journals (Sweden)

    Jun Luo

    2011-12-01

    Full Text Available Motion targets tracking techniques is one of the most important aspects in the fields of mobile robot research under unknown environments. To solve the problem of unstable vision resulted from the uncertainties, a method of active compensation for robot visual was proposed based on the principle of bionic eye movements. According to oculomotor neural circuits, an adaptive oculomotor control model of eye movements was established, and the model includes that VOR, smooth purisuit and compound eye movements. In order to verify the model’s performance, some simulation experiments ware conducted in different environment. Simulation results show that the model can be active compensation of visual error caused by the dynamic variation of the robot attitude and the tracking target location. Finally, physical robot experiments results also confirm the effectiveness of the control model. Compared with the conventional camera, this new one can solve the problem of unstable vision.

  9. A bio-inspired test system for bionic above-knee prosthetic knees

    Science.gov (United States)

    Wang, Dai-Hua; Xu, Lei; Fu, Qiang; Yuan, Gang

    2013-04-01

    Recently, prosthetic knees in the developing stage are usually tested by installing them on amputees' stumps directly or on above-knee prostheses (AKPs) test platforms. Although amputees can fully provide the actual motion state of the thigh, immature prosthetic knees may hurt amputees. For AKPs test platforms, it just can partly simulate the actual motion state of the thigh with limitation of the motion curve of the thigh, the merits or demerits of newly developed bionic above-knee prosthetic knees cannot be accessed thoroughly. Aiming at the defects of two testing methods, this paper presents a bio-inspired AKPs test system for bionic above-knee prosthetic knees. The proposed bio-inspired AKPs test system is composed of a AKPs test platform, a control system, and a bio-inspired system. The AKPs test platform generates the motion of the thigh simulation mechanism (TSM) via two screw pairs with servo motors. The bio-inspired system includes the tester and the bio-inspired sensor wore by the tester. The control system, which is inspired by the bio-inspired system, generates the control command signal to move the TSM of the AKPs test platform. The bio-inspired AKPs test system is developed and experimentally tested with a commercially available prosthetic knee. The research results show that the bio-inspired AKPs test system can not only ensure the safety of the testers, but also track all kinds of the actual motion state of the thigh of the testers in real time.

  10. 仿生非光滑理论在油气井工程中的应用%Application of bionic non-smooth theory in oil/gas well

    Institute of Scientific and Technical Information of China (English)

    黄少华

    2015-01-01

    The features of bionics are introduced in this paper along with the application of bionic non-smooth theory in drilling such as bionic rig,string and well.%本文重点介绍仿生学的特性,以及仿生非光滑理论在钻井工程中的应用,主要有仿生钻头,仿生钻柱,仿生井等.

  11. 形态/材料耦合仿生功能表面减阻特性及机制%Drag reduction characteristics and mechanism of bionic coupling functional surface caused by bionic form and elastic material

    Institute of Scientific and Technical Information of China (English)

    田丽梅; 可庆朋; 金娥; 李子源; 王银慈; 胡彦冰

    2015-01-01

    模仿海豚皮肤特殊结构的形态/材料耦合仿生功能表面可有效降低流体机械表面阻力,是流体机械实现节能减排的研究热点。该文采用流固耦合模拟技术,针对上述功能表面的面层材料及基底仿生形态2种耦合因素,各取3种不同的数值模型,对其减阻特性进行研究。计算结果表明:面层材料的弹性模量及基底仿生形态的间距对其减阻特性影响较大;面层材料的弹性模量越小,其顺应流体介质的能力越强,减阻效果越好;基底仿生形态的间距对于黏性阻力的影响效果显著,当间距为2 mm时,其减阻效果最好。减阻机制主要体现为:仿生耦合功能表面面层材料的弹性变形导致其实际流固接触界面与流固耦合界面产生分离,使其表面速度梯度降低,从而实现表面摩擦阻力的降低。%In the present study, a drag reduction on bionic surface originally inspired by the dolphin skin was designed and constructed. Two factors are coupled together with this bionic surface, they are bionic form processed on the basal rigid material and elastic surface material coupling on the bionic form. Such surface was called form/elastic material bionic coupling functional surface (BCFS) in this paper. The BCFS has been used in the impeller surface of centrifugal pump and proved to have the function of drag reduction. However, because of the limitation of existing test equipment, the drag reduction characteristics and mechanism of such BCFS can’t be revealed effectively. As such it greatly affects the wide application of the BCFS. Thanks to the gradually maturing fluid-structure coupling simulation technology, it makes the fluid control research by the BCFS possible. The two-way fluid-structure coupling simulation method was used under the ANSYS-Workbench platform to study the characteristics of drag reduction affected by the two coupling factors: elastic modulus of elastic surface

  12. A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials

    International Nuclear Information System (INIS)

    In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument

  13. A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Shupeng; Zhang, Zhihui, E-mail: zhzh@jlu.edu.cn; Ren, Luquan; Liang, Yunhong [The Key Laboratory of Engineering Bionics (Ministry of Education) and the College of Biological and Agricultural Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025 (China); Zhao, Hongwei [College of Mechanical Science and Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025 (China); Zhu, Bing [College of Automotive Engineering, Jilin University (Nanling Campus), 5988 Renmin Street, Changchun 130025 (China)

    2014-06-15

    In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument.

  14. A novel in situ device based on a bionic piezoelectric actuator to study tensile and fatigue properties of bulk materials

    Science.gov (United States)

    Wang, Shupeng; Zhang, Zhihui; Ren, Luquan; Zhao, Hongwei; Liang, Yunhong; Zhu, Bing

    2014-06-01

    In this work, a miniaturized device based on a bionic piezoelectric actuator was developed to investigate the static tensile and dynamic fatigue properties of bulk materials. The device mainly consists of a bionic stepping piezoelectric actuator based on wedge block clamping, a pair of grippers, and a set of precise signal test system. Tensile and fatigue examinations share a set of driving system and a set of signal test system. In situ tensile and fatigue examinations under scanning electron microscope or metallographic microscope could be carried out due to the miniaturized dimensions of the device. The structure and working principle of the device were discussed and the effects of output difference between two piezoelectric stacks on the device were theoretically analyzed. The tensile and fatigue examinations on ordinary copper were carried out using this device and its feasibility was verified through the comparison tests with a commercial tensile examination instrument.

  15. Synthesis of Bioactive Three-dimensional Silicon-oxide Nanofibrous Structures on the Silicon Substrate for Bionic Devices’ Fabrication

    OpenAIRE

    Candace Colpitts; Amirkianoosh Kiani

    2016-01-01

    Bionic devices are implants that replace biological functions that have been lost due to damaged or lost tissue. The challenge of this area is to find the appropriate materials to match the biocompatible criteria with the same mechanical and electrical performance. In this research, a new method is introduced for the enhance‐ ment of silicon biocompatibility by fabrication of a 3D nanofibrous layer on the silicon surface, induced by nanosecond laser pulses at a high repetition rate and power....

  16. An insect-inspired bionic sensor for tactile localization and material classification with state-dependent modulation

    OpenAIRE

    Luca Patanè; Volker Dürr

    2012-01-01

    Insects carry a pair of antennae on their head: multimodal sensory organs that serve a wide range of sensory-guided behaviors. During locomotion, antennae are involved in near-range orientation, for example in detecting, localizing, probing, and negotiating obstacles. Here we present a bionic, active tactile sensing system inspired by insect antennae. It comprises an actuated elastic rod equipped with a terminal acceleration sensor. The measurement principle is based on the analysis of damped...

  17. Estimation of the Age and Amount of Brown Rice Plant Hoppers Based on Bionic Electronic Nose Use

    OpenAIRE

    Sai Xu; Zhiyan Zhou; Huazhong Lu; Xiwen Luo; Yubin Lan; Yang Zhang; Yanfang Li

    2014-01-01

    The brown rice plant hopper (BRPH), Nilaparvata lugens (Stal), is one of the most important insect pests affecting rice and causes serious damage to the yield and quality of rice plants in Asia. This study used bionic electronic nose technology to sample BRPH volatiles, which vary in age and amount. Principal component analysis (PCA), linear discrimination analysis (LDA), probabilistic neural network (PNN), BP neural network (BPNN) and loading analysis (Loadings) techniques were used to analy...

  18. Effects of bionic units on the fatigue wear of gray cast iron surface with different shapes and distributions

    Science.gov (United States)

    Chen, Zhi-kai; Lu, Shu-chao; Song, Xi-bin; Zhang, Haifeng; Yang, Wan-shi; Zhou, Hong

    2015-03-01

    To improve the fatigue wear resistance of gray cast iron (GCI), GCI samples were modified by a laser to imitate the unique structure of some soil animals alternating between soft and hard phases; the hard phase resists the deformation and the soft phase releases the deformation. Using the self-controlled fatigue wear test method, the fatigue wear behaviors of treated and untreated samples were investigated and compared experimentally. The results show that the bionic non-smooth surface obtains a beneficial effect on improving the fatigue wear resistance of a sample, and the fatigue wear resistance of the bionic sample assembled with reticulate units (60°+0°), whose mass loss was reduced by 62%, was superior to the others. Meanwhile, a finite element (FE) was used to simulate the compression and the distributions of strain and stress on the non-smooth surface was inferred. From these results, we understood that the functions of the bionic unit such as reducing strain and stress, and also obstructing the closure and propagation of cracks were the main reasons for improving the fatigue wear property of GCI.

  19. Investigation on 3Dt wake flow structures of swimming bionic fish

    Institute of Scientific and Technical Information of China (English)

    G.-X.Shen; G.-K.Tan; G.-J.Lai

    2012-01-01

    A bionic experimental platform was designed for the purpose of investigating time accurate three-dimensional flow field,using digital particle image velocimetry (DSPIV).The wake behind the flapping trail of a robotic fish model was studied at high spatial resolution.The study was performed in a water channel.A robot fish model was designed and built.The model was fixed onto a rigid support framework using a cable-supporting method,with twelve stretched wires.The entire tail of the model can perform prescribed motions in two degrees of freedom,mainly in carangiform mode,by driving its afterbody and lunate caudal fin respectively The DSPIV system was set up to operate in a translational manner,measuring velocity field in a series of parallel slices.Phase locked measurements were repeated for a number of runs,allowing reconstruction of phase average flow field.Vortex structures with phase history of the wake were obtained.The study reveals some new and complex three-dimensional flow structures in the wake of the fish,including "reverse hairpin vortex" and "reverse Karman S-H vortex rings",allowing insight into physics of this complex flow.

  20. Investigation on 3D t wake flow structures of swimming bionic fish

    Science.gov (United States)

    Shen, G.-X.; Tan, G.-K.; Lai, G.-J.

    2012-10-01

    A bionic experimental platform was designed for the purpose of investigating time accurate three-dimensional flow field, using digital particle image velocimetry (DSPIV). The wake behind the flapping trail of a robotic fish model was studied at high spatial resolution. The study was performed in a water channel. A robot fish model was designed and built. The model was fixed onto a rigid support framework using a cable-supporting method, with twelve stretched wires. The entire tail of the model can perform prescribed motions in two degrees of freedom, mainly in carangiform mode, by driving its afterbody and lunate caudal fin respectively. The DSPIV system was set up to operate in a translational manner, measuring velocity field in a series of parallel slices. Phase locked measurements were repeated for a number of runs, allowing reconstruction of phase average flow field. Vortex structures with phase history of the wake were obtained. The study reveals some new and complex three-dimensional flow structures in the wake of the fish, including "reverse hairpin vortex" and "reverse Karman S-H vortex rings", allowing insight into physics of this complex flow.

  1. Mechanism Interpretation of the Biological Brain Cooling and Its Inspiration on Bionic Engineering

    Institute of Scientific and Technical Information of China (English)

    Xu Xue; Jing Liu

    2011-01-01

    The brain is one of the most important organs in a biological body which can only work in a relatively stable temperature range. However, many environmental factors in biosphere would cause cerebral temperature fluctuations. To sustain and regulate the brain temperature, many mechanisms of biological brain cooling have been evolved, including Selective Brain Cooling (SBC), cooling through surface water evaporation, respiration, behavior response and using special anatomical appendages. This article is dedicated to present a summarization and systematic interpretation on brain cooling strategies developed in animals by classifying and comparatively analyzing each typical biological brain cooling mechanism from the perspective of bio-heat transfer. Meanwhile, inspirations from such cooling in nature were proposed for developing advanced bionic engineering technologies especially with two focuses on therapeutic hypothermia and computer chip cooling areas. It is expected that many innovations can be achieved along this way to find out new cooling methodologies for a wide variety of industrial applications which will be highly efficient, energy saving, flexible or even intelligent.

  2. Unifying inflation with late-time acceleration by a BIonic system

    Science.gov (United States)

    Sepehri, Alireza; Rahaman, Farook; Setare, Mohammad Reza; Pradhan, Anirudh; Capozziello, Salvatore; Sardar, Iftikar Hossain

    2015-07-01

    We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations.

  3. Unifying inflation with late-time acceleration by a BIonic system

    International Nuclear Information System (INIS)

    We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations

  4. Bionic design. Its idea and present situation; Biotec design. Sono kangaekata to genjo

    Energy Technology Data Exchange (ETDEWEB)

    Oda, J. [Kanazawa University, Ishikawa (Japan). Faculty of Engineering

    1996-03-05

    This paper explains the idea of a bionic design and the present situation of its research. There are numerous subjects to learn from the structure and system of organisms as well as in the process of their generation, evolution and extinction, in connection with the design of artifacts. These subjects are classified into positions for developing new materials, new mechanisms/structures, and new systems or algorithmic models. In other words, they are the development of materials for self-repairing cracks and defects, development of micro-machines or robots from the moving mechanisms and the like of insects and micro-organisms, development of a mechanism for protecting a gigantic structures or systems through the use of an immunity system by antigen and antibody, and so on. The enamel of teeth is an apatite material with the hardness of 5 but actually provided with a strength comparable to the hardness of 6 to 7. Bamboo resists an external force by varying the distribution of vascular bundles in the thickness direction. Thus, the integration of software and hardware is the characteristic of biomaterials. 13 refs., 6 figs.

  5. Unifying inflation with late-time acceleration by a BIonic system

    Directory of Open Access Journals (Sweden)

    Alireza Sepehri

    2015-07-01

    Full Text Available We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations.

  6. Bionic Ears: Their Development and Future Advances Using Neurotrophins and Inherently Conducting Polymers

    Directory of Open Access Journals (Sweden)

    Graeme M. Clark

    2004-01-01

    Full Text Available The development of the multiple-channel bionic ear for hearing and speech understanding in profoundly deaf people is the result of integrating biological and physical sciences with engineering. It is the first clinically successful restoration of sensory and brain function, and brings electronic technology into a direct functional relationship with human consciousness. It presently transmits essential place and coarse temporal information for the coding of frequency, but the fine temporal and place excitation of groups of nerve fibres is inadequate for high-fidelity sound. This is required for adequate musical appreciation and hearing in noise. Research has demonstrated that nerve growth factors preserve the peripheral processes of the auditory nerves so that an electrode array placed close to these fibres could produce this fine temporal and spatial coding. The nerve growth factors can be incorporated into inherently conducting polymers that are part of the array so the peripheral processes can be preserved at the same time as they are electrically stimulated.

  7. Butterfly scales as bionic templates for complex ordered nanophotonic materials: A pathway to biomimetic plasmonics

    Science.gov (United States)

    Jakšić, Zoran; Pantelić, Dejan; Sarajlić, Milija; Savić-Šević, Svetlana; Matović, Jovan; Jelenković, Branislav; Vasiljević-Radović, Dana; Ćurčić, Srećko; Vuković, Slobodan; Pavlović, Vladimir; Buha, Jelena; Lačković, Vesna; Labudović-Borović, Milica; Ćurčić, Božidar

    2013-08-01

    In this paper we propose a possible use of butterfly scales as templates for ordered 2D or 3D nanophotonic materials, with complexity not easily reproducible by conventional micro/nanofabrication methods. Functionalization through laminar nanocompositing is utilized to impart novel properties to the biological scaffold. An extremely wide variability of butterfly scale forms, shapes, sizes and fine structures is observed in nature, many of them already possessing peculiar optical properties. Their nanophotonic functionalization ensures a large choice of forms and functions, including enhanced light localization, light and plasmon waveguiding and general metamaterial behavior, to mention a few. We show that one is able to achieve a combination of plasmonics and bionics, resulting in functionalities seldom if ever met in nature. As an illustration we have analyzed the photonic properties of the nanostructured scales on the wings of Purple Emperor butterflies Apatura ilia, Apatura iris and Sasakia charonda. Their intricate nanometer-sized structures produce remarkable ultraviolet-blue iridescence, spectrally and directionally narrow. We present our analysis of their plasmonic/nanophotonic functionalization including preliminary calculations and initial experimental results. As a simple example, we used radiofrequent sputtering to produce nanoaperture-based plasmonic structures at a fraction of the cost and necessary engineering efforts compared to the conventional top-down methods. We conclude that the described pathway to biomimetic plasmonics offers potentials for significant expansion of the nanophotonic and nanoplasmonic material toolbox.

  8. Unifying inflation with late-time acceleration by a BIonic system

    Energy Technology Data Exchange (ETDEWEB)

    Sepehri, Alireza, E-mail: alireza.sepehri@uk.ac.ir [Faculty of Physics, Shahid Bahonar University, P.O. Box 76175, Kerman (Iran, Islamic Republic of); Rahaman, Farook, E-mail: rahaman@iucaa.ernet.in [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India); Setare, Mohammad Reza, E-mail: rezakord@ipm.ir [Department of Science, Campus of Bijar, University of Kurdistan, Bijar (Iran, Islamic Republic of); Pradhan, Anirudh, E-mail: pradhan@iucaa.ernet.in [Department of Mathematics, Institute of Applied Sciences & Humanities, GLA University, Mathura-281 406, U.P. (India); Capozziello, Salvatore, E-mail: capozziello@na.infn.it [Dipartimento di Fisica, Universitá di Napoli “Federico II”, I-80126 Napoli (Italy); INFN Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Edificio G, I-80126 Napoli (Italy); Gran Sasso Science Institute (INFN), Viale F. Crispi, 7, I-67100 L' Aquila (Italy); Sardar, Iftikar Hossain, E-mail: iftikar.spm@gmail.com [Department of Mathematics, Jadavpur University, Kolkata 700032, West Bengal (India)

    2015-07-30

    We propose a cosmological model that unifies inflation, deceleration and acceleration phases of expansion history by a BIonic system. At the beginning, there are k black fundamental strings that transited to the BIon configuration at a given corresponding point. Here, two coupled universes, brane and antibrane, are created interacting each other through a wormhole and inflate. With decreasing temperature, the energy of this wormhole flows into the universe branes and leads to inflation. After a short time, the wormhole evaporates, the inflation ends and a deceleration epoch starts. By approaching the brane and antibrane universes together, a tachyon is born, grows and causes the creation of a new wormhole. At this time, the brane and antibrane universes result connected again and the late-time acceleration era of the universe begins. We compare our model with previous unified phantom models and observational data obtaining some cosmological parameters like temperature in terms of time. We also find that deceleration parameter is negative during inflation and late-time acceleration epochs, while it is positive during the deceleration era. This means that the model is consistent, in principle, with cosmological observations.

  9. Can Quick Release Experiments Reveal the Muscle Structure? A Bionic Approach

    Institute of Scientific and Technical Information of China (English)

    D. F. B. Haeufle; M. Günther; R. Blickhan; S. Schmitt

    2012-01-01

    The goal of this study was to understand the macroscopic mechanical structure and function of biological muscle with respect to its dynamic role in the contraction.A recently published muscle model,deriving the hyperbolic force-velocity relation from first-order mechanical principles,predicts different force-velocity operating points for different load situations.With anew approach,this model could be simplified and thus,transferred into a numerical simulation and a hardware experiment.Two types of quick release experiments were performed in simulation and with the hardware setup,which represent two extreme cases of the contraction dynamics:against a constant force (isotonic) and against an inertial mass.Both experiments revealed hyperbolic or hyperbolic-like force-velocity relations.Interestingly,the analytical model not only predicts these extreme cases,but also additionally all contraction states in between.It was possible to validate these predictions with the numerical model and the hardware experiment.These results prove that the origin of the hyperbolic force-velocity relation can be mechanically explained on a macroscopic level by the dynamical interaction of three mechanical elements.The implications for the interpretation of biological muscle experiments and the realization of muscle-like bionic actuators are discussed.

  10. Bionic optical imaging system with aspheric solid-liquid mixed variable-focus lens

    Science.gov (United States)

    Du, Jia-Wei; Wang, Xuan-Yin; Liang, Dan

    2016-02-01

    A bionic optical imaging system with an aspheric solid-liquid mixed variable-focus lens was designed and fabricated. The entire system mainly consisted of a doublet lens, a solid-liquid mixed variable-focus lens, a connecting part, and a CCD imaging device. To mimic the structure of the crystalline lens, the solid-liquid mixed variable-focus lens consisted of a polydimethylsiloxane (PDMS) lens, a polymethyl methacrylate lens, and the liquid of ethyl silicone oil. By pumping liquid in or out of the cavity using a microinjector, the curvatures of the front and rear surfaces of the PDMS lens were varied, resulting in a change of focal length. The overall structure of the system was presented, as well as a detailed description of the solid-liquid mixed variable-focus lens, material, and fabrication process. Under different injection volumes, the deformation of the PDMS lens was measured and simulated, pictures were captured, and the optical performance was analyzed in simulations and experiments. The focal length of the system ranged from 25.05 to 14.61 mm, and the variation of the diopter was 28.5D, which was larger than that of the human eye.

  11. Effects of laser parameters on the geometrical characteristics of peg-shaped bionic coupling unit

    Science.gov (United States)

    Zhang, Baoyu; Zhang, Zhihui; Liang, Yunhong; Yan, Qiongqiong; Ren, Luquan

    2014-12-01

    Peg-shaped bionic coupling unit (PBCU) processed by pulse laser is effective in anti-adhesion, anti-drag, anti-wear and anti-fatigue application. To obtain desired structural and morphological characteristics of the PBCU for industrial manufacturing, selection of proper processing parameters gradually becomes a growing important problem. Traditionally, the procedure of parameter selecting is often cost-plus and time-consuming. In this work, a statistical analysis of fabricating PBCU on the surface of medium carbon steel was conducted. The laser processing parameters utilized in the experiment and analysis are peak power 4-8 kW, pulse duration 6-16 ms and defocusing amount 6-10 mm. A series of mathematical models regarding the relationship between geometrical characteristics of PBCU and laser processing parameters were developed and checked. The results indicate that the developed models can be adequately used to control the structural and morphological characteristics of PBCU within the scope of analysis. Based on the models, the formation mechanism of the structural and morphological characteristics under different laser parameters were analyzed and discussed.

  12. Research on the image fusion and target extraction based on bionic compound eye system

    Science.gov (United States)

    Zhang, Shaowei; Hao, Qun; Song, Yong; Wang, Zihan; Zhang, Kaiyu; Zhang, Shiyu

    2015-08-01

    People attach more and more importance to bionic compound eye due to its advantages such as small volume, large field of view and sensitivity to high-speed moving objects. Small field of view and large volume are the disadvantages of traditional image sensor and in order to avoid these defects, this paper intends to build a set of compound eye system based on insect compound eye structure and visual processing mechanism. In the center of this system is the primary sensor which has high resolution ratio. The primary sensor is surrounded by the other six sensors which have low resolution ratio. Based on this system, this paper will study the target image fusion and extraction method by using plane compound eye structure. This paper designs a control module which can combine the distinguishing features of high resolution image with local features of low resolution image so as to conduct target detection, recognition and location. Compared with traditional ways, the way of high resolution in the center and low resolution around makes this system own the advantages of high resolution and large field of view and enables the system to detect the object quickly and recognize the object accurately.

  13. Numerical simulation on drag reduction of revolution body through bionic riblet surface

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Numerical simulations of flow fields on the bionic riblet and the smooth revolution bodies were performed based on the SST k-ω turbulence model in order to explain the mechanisms of the skin friction drag reduction, base drag reduction on the riblet surface, and flow control behaviors of riblet surface near the wall. The simulation results show that the riblet surface arranged on the rearward of the revolution body can reduce the skin friction drag by 8.27%, the base drag by 9.91% and the total drag by 8.59% at Ma number 0.8. The riblet surface reduces the skin friction drag by reducing the velocity gradient and turbulent intensity, and reduces the base drag by weakening the pumping action on the dead water region which behind the body of revolution caused by the external flow. The flow control behavior on boundary layer shows that the riblet surface can cut the low-speed flow near the wall effectively, and restrain the low-speed flow concentrating in span direction, thus weaken the instability of the low speed steaks produced by turbulent flow bursting.

  14. 截瘫步行器的仿生效果%Bionic effect of reciprocating gait orthosis

    Institute of Scientific and Technical Information of China (English)

    陈文远

    2011-01-01

    BACKGROUND: Reciprocating gait orthosis makes the paraplegia patients walking, but reciprocating gait orthosis can only perform walking rehabilitation training and simple walking, which was far from real walking function compensation.OBJECTIVE: To summarize and analyze construction features, action mechanism and bionic effect of reciprocating gait orthosis.METHODS: We retrieved PubMed Database and Wanfang Database for articles concerning features, bionic effect and clinical application of reciprocating gait orthosis published from January 1990 to December 2008. The key words were "reciprocation gait orthosis, walkabout, bionice". A total of 32 articles were researched.RESULTS AND CONCLUSION: At present, unpowered reciprocating gait orthosis has been extensively utilized , but it can only perform walking rehabilitation training and simple walking, which was far from real walking function compensation for paraplegia patients. The bionic effects of reciprocation gait orthosis and walkabout were poor; gait lacked fidelity; physical ability was greatly consumed. However, the gait orthosis that requires outer energy for supplement can overcome the disadvantage of unpowered gait orthosis. With the wide usage of artificial intellectual technology in robot and many industry fields, its development can provide gait orthosis that has good function, safety, reliability, and bionics.%背景:截瘫步行器的临床应用,使截瘫患者重建步行功能成为可能,但截瘫步行器只为进行步行康复训练及简单的行走,距离真正意义上的步行功能代偿相差还很远.目的:对目前几种截瘫步行器的结构特点、作用机制及仿生效果进行归纳、分析.方法:应用计算机检索1990-01/2008-12 PubMed数据库及万方数据库有关截瘫步行器的特点、仿生效果及临床应用方面的相关文献,英文检索词"reciprocation gait orthosis,walkabout,bionice",中文检索词"截瘫步行器,仿生".检索文献量总计32篇.

  15. The Design of Bionic Left Ventricular Auxiliary Pump%仿生左心室辅助血泵设计

    Institute of Scientific and Technical Information of China (English)

    金恒林; 胡晓兵; 杜磊

    2015-01-01

    This paper reports a novel design of bionic left ventricular auxiliary pump, and the characteristic is that elastic diaphragm of pump driven by hydraulic, having smooth, reliable blood supply, can prevent blood clots, can use the flow sensor, pressure sensor detection showing the blood pressure and blood volume at the inlet and outlet of the pump. The pump can go with heart rate synchronization or asynchronous auxiliary by the R wave of human body’s ECG. The design goal is realization of bionic throb. Through the animal experiment, the blood pressure waveforms are close to expectations, stable flow can stroke according to the set value, which prove that the pump can meet the requirement for heart disease patients for bionic left ventricular assistant.%该文设计一种新型的仿生左心室辅助血泵,其特点是采用液压驱动弹性隔膜结构,具有供血平稳、可靠,有利于防止血栓;可以利用流量传感器、压力传感器检测显示泵进、出口的血压和泵血量。该血泵可以根据人体心电R波实现与人体心率同步辅助或非同步辅助。设计目标是实现仿生搏动。动物实验中,血压波形逼近期望值,流量能够按照设定值稳定搏出,证明该泵能满足对心脏病人进行仿生左心室辅助的要求。

  16. 论艺术与仿生学的结缘%On the combination of art and bionics

    Institute of Scientific and Technical Information of China (English)

    张宏梁

    2001-01-01

    建筑仿生、工艺仿生以及人工智能艺术,是艺术与仿生学结缘的三个突出的方面。对之所进行的边缘性研究,旨在用艺术与科学相结合的方法,仿照某些生物的特征、机能,制作新的建筑物、艺术品、工艺品和具有独特审美价值的工业产品。艺术与仿生学的结缘是艺术起源观中的摹仿说在新的科学技术发展时代的一个质的飞跃。在技术美学领域,对艺术与仿生学的结缘尤为重视。%The application of bionics in architecture and industrial art and artificial intelligence are mostimportant areas in which art and bionics are combined. The interdisciplinary research in these areas isaimed at producing new architectural works, art items and industrial products with unique aesthetic valuethrough a combination of art and science and modeling features and functions of animate objects. The com-bination of art and bionics presents an essential step forward of the imitation theory in the study of the ori-gin of art in the new era of highly developed technology and science. This combination is particularly sig-nificant for technological aesthetics.

  17. The Design of Bionic Left Ventricular Auxiliary Pump%仿生左心室辅助血泵设计

    Institute of Scientific and Technical Information of China (English)

    金恒林; 胡晓兵; 杜磊

    2015-01-01

    该文设计一种新型的仿生左心室辅助血泵,其特点是采用液压驱动弹性隔膜结构,具有供血平稳、可靠,有利于防止血栓;可以利用流量传感器、压力传感器检测显示泵进、出口的血压和泵血量。该血泵可以根据人体心电R波实现与人体心率同步辅助或非同步辅助。设计目标是实现仿生搏动。动物实验中,血压波形逼近期望值,流量能够按照设定值稳定搏出,证明该泵能满足对心脏病人进行仿生左心室辅助的要求。%This paper reports a novel design of bionic left ventricular auxiliary pump, and the characteristic is that elastic diaphragm of pump driven by hydraulic, having smooth, reliable blood supply, can prevent blood clots, can use the flow sensor, pressure sensor detection showing the blood pressure and blood volume at the inlet and outlet of the pump. The pump can go with heart rate synchronization or asynchronous auxiliary by the R wave of human body’s ECG. The design goal is realization of bionic throb. Through the animal experiment, the blood pressure waveforms are close to expectations, stable flow can stroke according to the set value, which prove that the pump can meet the requirement for heart disease patients for bionic left ventricular assistant.

  18. Affordable self-sufficient, bionic buildings. The necessity of thermal inertia; Betaalbare autarkische, bionische gebouwen. Thermische traagheid noodzakelijk

    Energy Technology Data Exchange (ETDEWEB)

    Schmitz, H. [Afdeling Binnenmilieu en Energie, Arcadis Bouw en Vastgoed, Den Haag (Netherlands)

    2004-03-01

    An overview is given of the development of low-pressure phase change material (PCM) induction units, which are fundamental elements of self-sufficient and bionic construction. Applications of PCM in buildings for climatization are discussed. [Dutch] Het samenwerkingsverband tussen verschillende bedrijven heeft de ontwikkeling van lagedruk, PCM (Phase Change Materials) inductie-units tot gevolg gehad. Deze units vormen een fundamenteel bestanddeel van het autarkisch en bionisch bouwen, dat zo mogelijk kan leiden tot autarkie (zelfvoorzienendheid op energiegebied). Wat zijn de toepassingen van PCM in gebouwen voor de ruimteklimatisering?.

  19. Design and development of a ferroelectric micro photo detector for the bionic eye

    Science.gov (United States)

    Song, Yang

    Driven by no effective therapy for Retinitis Pigmentosa and Age Related Macular Degeneration, artificial vision through the development of an artificial retina that can be implanted into the human eye, is being addressed by the Bionic Eye. This dissertation focuses on the study of a photoferroelectric micro photo detector as an implantable retinal prosthesis for vision restoration in patients with above disorders. This implant uses an electrical signal to trigger the appropriate ocular cells of the vision system without resorting to wiring or electrode implantation. The research work includes fabrication of photoferroelectric thin film micro detectors, characterization of these photoferroelectric micro devices as photovoltaic cells, and Finite Element Method (FEM) modeling of the photoferroelectrics and their device-neuron interface. A ferroelectric micro detector exhibiting the photovoltaic effect (PVE) directly adds electrical potential to the neuron membrane outer wall at the focal adhesion regions. The electrical potential then generates a retinal cell membrane potential deflection through a newly developed Direct-Electric-Field-Coupling (DEFC) model. This model is quite different from the traditional electric current model because instead of current directly working on the cell membrane, the PVE current is used to generate a localized high electric potential in the focal adhesion region by working together with the anisotropic high internal impedance of ferroelectric thin films. General electrodes and silicon photodetectors do not have such anisotropy and high impedance, and thus they cannot generate DEFC. This mechanism investigation is very valuable, because it clearly shows that our artificial retina works in a way that is totally different from the traditional current stimulation methods.

  20. Structural bionic design for high——speed machine tool working table based on distribution rules of leaf veins

    Institute of Scientific and Technical Information of China (English)

    XING DengHai; CHEN WuYi; ZHAO Ling; MA JianFeng

    2012-01-01

    High-speed machine tool working table restrains the machining accuracy and machining efficiency,so lightweight design of the table is an important issue.In nature,leaf has developed a plate structure that maximizes the surface-to-volume ratio.It can be seen as a plate structure stiffened by veins.Compared with a high-speed machine tool working table,leaf veins play a role of supporting part which is similar to that of stiffening ribs,and they can provide some new design ideas for lightweight design of the table.In this paper,distribution rules of leaf veins were investigated,and a structural bionic design for the table was achieved based on regulation of leaf veins.First,statistical analysis on geometric structure of leaf veins was carried out,and four distribution rules were obtained.Then,relevant mechanical models were developed and analyzed in finite element soft-ware.Based on the results from mechanical analysis on those relevant models,the four distribution rules were translated into the design rules and a structural bionic design for the working table was achieved.Both simulation and experimental verifications were carried out,and results showed that the average displacement of the working table was reduced by about 33.9%.

  1. Effect of thermal fatigue on the wear resistance of graphite cast iron with bionic units processed by laser cladding WC

    Science.gov (United States)

    Jing, Zhengjun; Zhou, Hong; Zhang, Peng; Wang, Chuanwei; Meng, Chao; Cong, Dalong

    2013-04-01

    Thermal fatigue and wear exist simultaneously during the service life of brake discs. Previous researchers only studied thermal fatigue resistance or abrasion resistance of compact graphite cast iron (CGI), rather than combining them together. In this paper, wear resistance after thermal fatigue of CGI was investigated basing on the principle of bionics, which was close to actual service condition of the brake discs. In the meanwhile, the effect of thermal fatigue on wear resistance was also discussed. Non-smooth bionic units were fabricated by laser cladding WC powder with different proportions (50 wt.%, 60 wt.%, 70 wt.%). Microstructure and microhardness of the units were investigated, and wear mass losses of the samples were also compared. The results indicate that thermal fatigue has a negative effect on the wear resistance. After the same thermal fatigue cycles times, the wear resistance of laser cladding WC samples is superior to that of laser remelting ones and their wear resistance enhances with the increase of WC content.

  2. Macrophages promote benzopyrene-induced tumor transformation of human bronchial epithelial cells by activation of NF-κB and STAT3 signaling in a bionic airway chip culture and in animal models

    OpenAIRE

    Li, Encheng; Xu, Zhiyun; Zhao, Hui; Sun, Zhao; Wang, Lei; Guo, Zhe; Zhao, Yang; GAO, ZHANCHENG; Wang, Qi

    2015-01-01

    We investigated the role of macrophages in promoting benzopyrene (BaP)-induced malignant transformation of human bronchial epithelial cells using a BaP-induced tumor transformation model with a bionic airway chip in vitro and in animal models. The bionic airway chip culture data showed that macrophages promoted BaP-induced malignant transformation of human bronchial epithelial cells, which was mediated by nuclear factor (NF)-κB and STAT3 pathways to induce cell proliferation, colony formation...

  3. 半仿生技术在中药黄酮类成分提取中的应用进展%Progress in Semi-Bionic Extraction of Flavonoids from Traditional Chinese Medicinal Plants

    Institute of Scientific and Technical Information of China (English)

    杨姜德; 刘可越; 何明; 裘佳龄

    2015-01-01

    综述了黄酮类化合物的半仿生提取法。中草药有关半仿生提取方法包括半仿生提取法,半仿生提法醇提取法、微波辅助半仿生提取法、超声波辅助半仿生提取法、酶辅助半仿生提取法等。黄酮类化合物是一类重要活性物质,具有特殊的保健功能。本文旨在为黄酮类化合物的提取研究、开发、应用提供一定的参考。%ABSTRACT:This paper reviews the semi-bionic extraction of flavonoids.The semi-bionic extrac-tion methods related to traditional Chinese medicinal plants include semi-bionic extraction,semi-bionic alcohol extraction,microwave-assisted semi-bionic extraction,ultrasonic-assisted semi-bion-ic extraction,enzyme-assisted semi-bionic extraction,etc.Flavonoids are a class of important ac-tive substances with special health functions.This paper aims to provide a reference for the ex-traction,development and application of flavonoids.

  4. Synthesis of Bioactive Three-dimensional Silicon-oxide Nanofibrous Structures on the Silicon Substrate for Bionic Devices’ Fabrication

    Directory of Open Access Journals (Sweden)

    Candace Colpitts

    2016-02-01

    Full Text Available Bionic devices are implants that replace biological functions that have been lost due to damaged or lost tissue. The challenge of this area is to find the appropriate materials to match the biocompatible criteria with the same mechanical and electrical performance. In this research, a new method is introduced for the enhance‐ ment of silicon biocompatibility by fabrication of a 3D nanofibrous layer on the silicon surface, induced by nanosecond laser pulses at a high repetition rate and power. It was found that the laser treatment with small‐ er line spacing and a higher overlap number enhanced the biocompatibility of silicon. The results display a promis‐ ing improvement in the biocompatibility of silicon for the production of biomedical devices such as sensors, bio- MEMS and nano-biomaterial fabrications.

  5. A novel nano-sized bionic function interface for enhancing the ability of red blood cells to carry oxygen

    International Nuclear Information System (INIS)

    A nano-sized bionic function interface was prepared by immobilizing red blood cells onto a silver electrode, which was modified with cysteamine and colloidal gold. Scanning electron microscopy and electrochemical impedance spectroscopy were used to characterize its surface. Cyclic voltammograms in phosphate buffer solution of pH 7.0 exhibited a pair of redox peaks for oxygen at -378 and -207 mV, respectively. The reduction peak currents at -378 mV were linearly proportional to the oxygen concentration in the range from 12.6 μM to 1.39 mM. Cyclic voltammetry also indicated that the functional surface enhanced the ability of red blood cells to transport oxygen. (author)

  6. Wear properties of H13 with micron scale and nano scale grains bionic units processed by laser remelting

    Science.gov (United States)

    Zhang, Peng; Zhou, Hong; Wang, Cheng-tao; Liu, Yan; Ren, Lu-quan

    2013-12-01

    By simulating the cuticles of some soil animals, a combination of soft part (untreated substrate) and hard part (laser remelting area) structure was designed on metal surface to get an improved performance. Different specimens were prepared which contained units with micro and nano scale grains. The microstructures were observed by environmental field emission scanning electron microscopy. X-ray diffraction was used to identify the phases. The results of these tests indicate that due to the rapid solidification condition in the water, nano scale grains have a high microhardness between 1300 and 1000 HV. Retained austenite was found in it. Some of them transform to martensite in block on ring wear test. Specimens with bionic unit have a better wear resistance. Especially, the units with nano grains bring a further enhancement. The alternate soft and hard in macroscopic (substrate and laser remelting area) and microscopic (austenite and martensite) structure played a key role in improving the H13 wear resistance.

  7. Bionic Design of Fertilizer Sampling Robot%复合肥取样机器人仿生设计

    Institute of Scientific and Technical Information of China (English)

    唐启敬; 赵铁石; 边辉; 耿明超

    2011-01-01

    针对复合肥生产的高粉尘强腐蚀环境,设计了一种能够替代人工作业的取样机器人.分析使用需求,提出具有抗冲击、耐腐蚀、自清洁、传动机构内置、驱动远离末端执行件安装等特征的取样机器人设计原则.从仿生学角度出发,通过对螃蟹运动关节结构特征研究,提出取样机器人构型,进行了功能仿生和结构仿生设计.根据其使用工况,设计了取样机器人运动过程和控制方案.通过机构参数优化、仿真和冲击试验,验证了其可行性.%In order to release the fertilizer production workers working in high dust and strong corrosive environment for a long time, a sampling robot was designed. By analyzing the using demand, robot' s designing principles including characteristics of impact resistance, corrosion resistance, cleaning by itself, transmission mechanism built-in and drive away from the end piece installed was proposed. From the angle of bionics, the crab joints' structure characteristic was researched. Then sampling robot configuration was proposed. Bionics function and structure was designed. According to its operation condition, motion process and control plan was designed. After the parametric optimization, its feasibility was validated by simulation and impact test.

  8. Butterfly bionic antenna with ultra-wideband property%蝴蝶仿生超宽带天线

    Institute of Scientific and Technical Information of China (English)

    孙俊枝; 陈星

    2013-01-01

    Bionic antennas based on bionics principle not only are able to achieve good antenna performances,but also pos⁃sess beautiful shapes or concealed property. In this paper,a printed microstrip monopole antenna with ultra⁃wideband(UWB) property was designed by mimicking the shape of a butterfly. This antenna was fabricated and measured. It has a butterfly⁃like appearance. The measurement results that its ||S11 <-10 dB impedance bandwidth reaches 107%(3.2~10.6 GHz),and the anten⁃na has the omnidirectional radiation characteristics. The size of the antenna is only 26 mm×27.8 mm×1 mm.%  基于仿生学原理,仿生天线能够在获得良好天线性能的同时,兼顾天线外形美观或隐蔽性.模仿蝴蝶外形,设计了一款具有超宽带特性的印刷微带单极子天线,并加工制作.该天线外观酷似蝴蝶,测试表明该天线的||S11<-10 dB的阻抗带宽达到了107%(3.2~10.6 GHz),天线具有全向辐射特性,天线尺寸仅为26 mm×27.8 mm×1 mm.

  9. Wastes disposal on board a ship. Apparatus to decompose and annihilate wet refuses bionically; Senjo no haikibutsu shori. Namagomi no bio bunkai shometsuki

    Energy Technology Data Exchange (ETDEWEB)

    Takenaka, S.

    1996-07-25

    A bionic refuse disposing and annihilating apparatus for wet refuses produced on board a ship was developed, and introduced in this paper. This apparatus uses a system that biomass as a decomposing medium is maintained dry in a disposal tank, and wet refuses are decomposed and annihilated by the biomass working only with water contained in the wet refuses themselves. The system uses a decomposing medium composed of a mixture of different kinds of organic matters mixed with various nutrients, and automatically controls absorption and exhalation of decomposing water without using a heater. Almost all of wet refuses decomposes and annihilates in twelve hours after having been charged in their original forms. The decomposing medium can be used continuously for six months to a year. Because of complete annihilation by the bionic effect, no residue is created. This system uses a normal-temperature decomposing and annihilating bionic technology, whose minimum temperature required for decomposition and annihilation is 10{degree}C or higher, and the highest permissible temperature is 75{degree}C. Dry and cool environment at about 20{degree}C is most suitable. Deodorizing function of the biomass itself as the decomposing medium suppresses odor generation. 3 figs.

  10. Construction of a three-dimensional bionic nerve conduit containing two neurotrophic factors with separate delivery systems for the repair of sciatic nerve defects

    Institute of Scientific and Technical Information of China (English)

    Zhiyue Li; Qun Zhao; Ran Bi; Yong Zhuang; Siyin Feng

    2011-01-01

    Previous studies of nerve conduits have investigated numerous properties, such as conduit luminal structure and neurotrophic factor incorporation, for the regeneration of nerve defects. The present study used a poly(lactic-co-glycolic acid) (PLGA) copolymer to construct a three-dimensional (3D) bionic nerve conduit, with two channels and multiple microtubule lumens, and incorporating two neurotrophic factors, each with their own delivery system, as a novel environment for peripheral nerve regeneration. The efficacy of this conduit in repairing a 1.5 cm sciatic nerve defect was compared with PLGA-alone and PLGA-microfilament conduits, and autologous nerve transplantation. Results showed that compared with the other groups, the 3D bionic nerve conduit had the fastest nerve conduction velocity, largest electromyogram amplitude, and shortest electromyogram latency. In addition, the nerve fiber density, myelin sheath thickness and axon diameter were significantly increased, and the recovery rate of the triceps surae muscle wet weight was lowest. These findings suggest that 3D bionic nerve conduits can provide a suitable microenvironment for peripheral nerve regeneration to efficiently repair sciatic nerve defects.

  11. 仿生胶对枸杞害虫的防控技术研究%Control Technology of Bionic Glue against Insect Pests of Wolfberry

    Institute of Scientific and Technical Information of China (English)

    樊仲庆; 孙海霞; 王少东; 何嘉

    2013-01-01

    In the paper, we studied the effects of using bionic glue as fence around vegetable garden on the population dynamics of Chinese wolfberry. The results showed that, during spring and autumn, after using the bionic glue fence, the occurred periods of wolfberry aphids, psyllids and gall mites were significantly delayed, and the population densities were effectively reduced, therefore, pests damage on wolfberry were obviously alleviated. In addition, using bionic glue had no effect on bud emergence, leaf unfolding and fruit quality of wolfberry.%研究了仿生胶封园对枸杞害虫种群动态的影响,结果表明,初春和秋季采用仿生胶封园,明显推迟了枸杞蚜虫、木虱和瘿螨的发生期,可有效压低枸杞蚜虫、枸杞木虱、枸杞瘿螨等害虫的虫口数,明显降低害虫对枸杞的为害水平,且仿生胶的使用不影响枸杞树萌芽、展叶和果实品质。

  12. Analysis and testing of mechanical properties for bionic skin materials%仿生皮肤材料的力学性能测试与分析

    Institute of Scientific and Technical Information of China (English)

    谢驰; 陈爽; 蔡鹏; 林大全; 王远苹

    2013-01-01

    仿生皮肤材料是一种由高分子材料复合而成的,作为汽车碰撞安全性能实验假人皮肤肌肉的一种特殊功能材料.实验假人皮肤的反弹力和损伤因子影响汽车碰撞安全性能实验,影响汽车碰撞测试对人体的损伤程度判定的科学性和准确性.而仿生皮肤材料的力学性能主要受制备过程中混合基、填料的用量和硫化时间的不同等因素影响.针对汽车碰撞实验假人仿生皮肤材料的特殊性,为了制备综合性能优越的仿生皮肤,对仿生皮肤材料的制备与力学性能进行研究,研究不同混合基胶、固化剂、填料剂和后硫化时间对仿生皮肤材料力学性能的影响,通过对3种制备不同的仿生皮肤材料进行超声波测试和冲击测试分析,探讨具有最优力学性能仿生皮肤材料的合成途径.%Bionic skin material is a special kind of functional materials made of a polymer composited materials, which can used in the automobile collision test for safety performance of dummy skin and muscle. The resilient and injury factor of dummy skin will have some affection to the automobile collision test for safety performance, and it has also the impact for the car crash test to determine the scientific and the accuracy of damaging on the human body. But the mechanical properties of bionic skin materials are mainly determined by the mixed base, the amount of filled material and the curing time in the preparation process. For the special performance of bionic skin materials used in automotive crash tes, the mechanical properties and the preparation of the bionic skin materials are studied, and the impact of the different mixed base rubber, curing agent, filler agents and post-curing time on the mechanical properties of bionic skin materials are also studied. Finally, the synthetic pathway of bionic skin materials with optimal mechanical properties is approched, with the help of ultrasonic testing and impact testing for three

  13. Research on the Feature Extraction of Bionic Color for Product-oriented Design%面向产品设计领域的色彩仿生特征提取探析

    Institute of Scientific and Technical Information of China (English)

    侯晓鹏; 杨保华

    2011-01-01

    According to the product design program and the color of natural biological characteristics,it summed up in two different forms for the process of bionic color design.For the feature extraction of biological prototype color,it summarized the four design principles,namely: main color optimization,the secondary colors appropriate to ignore: the color space configured bionic;the whole color bionics shared with the part color bionics;color feedback capabilities of bionic.Through the application of these design principles,it will provide a wider gamut color space for the product color design.%从产品设计程序出发,以自然生物色彩的特点为启示,总结出2种不同形式的仿生色彩设计流程。针对生物原型色彩特征的提取,归纳出4种设计原则,即:主体色优选,辅助色适当忽略:色彩面积配置仿生;整体色彩仿生与局部色彩仿生并用;色彩反馈功能仿生。通过这些设计原则的应用,将为产品色彩设计领域开拓更广阔的色域空间。

  14. Glucose as fuel for chemo-electric drives - bionic aspects; Glucose als Treibstoff fuer chemoelektrische Antriebe - bionische Aspekte

    Energy Technology Data Exchange (ETDEWEB)

    Radebold, R. [RADEBOLD Ingenieurbuero, Berlin (Germany)

    2003-07-01

    Installation of a bionic energy system requires three aspects: 1. Technical implementation of the principles of air-breathing, glucose-uptaking chemoelectric converters of the biological energy system; 2. step-by-step replacement of today's technical energy system by chemoelectric converters for similar energy services; 3. Production of glucose from biomass, distribution and use as renewable hydrogen transmitter in aqueous solution. The author's company works on these tasks. Priority is given to the first-mentioned task but the others are considered as well. Results and the state of the art are reported. (orig.) [German] Fuer die Installation eines bionischen Energiesystems sind drei Aufgaben zu erfuellen: 1. Uebertragung der Prinzipien von Bau und Betrieb der luftatmenden, glucose-tankenden chemoelektrischen Wandler des biologischen Energiesystems in die Technik, 2. schrittweiser Ersatz des heutigen technischen Energiesystems durch chemoelektrische Wandler bei gleichen Energiedienstleistungen. 3. Gewinnung von Glucose aus Biomasse, Verteilung und Einsatz als nachwachsendem Wasserstoffuebertraeger in waessriger Loesung als Treibstoff der Wandler. Wir haben uns dieser Herausforderung gestellt und arbeiten seit einigen Jahren an den obigen Aufgaben. Oberste Prioritaet hat die erste Aufgabe, aber auch die beiden anderen Aufgaben finden die notwendige Aufmerk-samkeit. Wir berichten im Folgenden ueber unsere Ergebnisse sowie ueber den Stand der Technik. (orig.)

  15. Influence of Orientations of Bionic Unit Fabricated by Laser Remelting on Fatigue Wear Resistance of Gray Cast Iron

    Science.gov (United States)

    Chen, Zhi-Kai; Zhou, Ti; Zhang, Hai-feng; Yang, Wan-shi; Zhou, Hong

    2015-06-01

    Fatigue wear resistance improvements were researched by studying experimental samples with gray cast iron fabricated with bionic units in different orientations. Experimental samples were modified by laser surface remelting, including parallel, vertical, and gradient units to the wear direction. The remelting pool was then studied to determine the micro-hardness, microstructure, alteration of phase, and etc. Lab-control fatigue wear test method was applied with the treated and untreated samples tested under the laboratorial conditions. Wear resistance result was considered as the rolling contact fatigue (RCF) resistance and mechanisms of the modified samples were experimentally investigated and discussed. Results suggested that all treated samples demonstrated the beneficial effect on the RCF improvement due to lack of graphite and reinforcement of treated region. Results also indicated the sample with fastigiated units was more effective than that with vertical units or parallel units to the wear direction. Influence of the sample unit's angle which intensely depended on the conditions of actual application, however, was not identified.

  16. 仿生机器鱼胸鳍驱动机构设计%Design of Driving Mechanism of Bionic Robotic Fish Pectoral

    Institute of Scientific and Technical Information of China (English)

    傅继军; 洪梓榕; 殷培峰

    2015-01-01

    设计了一种二自由度的胸鳍驱动机构。该机构采用连杆机构和齿轮机构分别实现仿生机器鱼的前后拍翼运动和摇翼运动,具有运动形式简单、效率高、可靠性好的特点。对驱动机构进行了运动学分析,建立了驱动机构的数学模型。仿生机器鱼通过两侧胸鳍配合,可以实现仿生机器鱼前进、后退、转弯等基本运动,为仿生机器鱼的设计提供了一套切实可行的方案。%This paper proposes a propulsion mechanism for bionic robotic fish with two degrees of freedom pectoral fin.In this design,the lead -lag motion and feathering motion are respectively achieved by linkage mechanism and gear mechanism.The movement characteristics of this mechanism are simple and efficient with good reliability.Its mathematical model is obtained through the analysis of the propulsion mechanism of kinematics.Bionic robotic fish can achieve basic movement such as forward,backward and turn by both sides of the pectoral fins.A feasible solu-tion is provides for the design of a bionic robotic fish.

  17. 海洋仿生食品的综合生产加工%The comprehensive production and processing of marine bionic food

    Institute of Scientific and Technical Information of China (English)

    孙晓莲

    2013-01-01

      对国内外海洋仿生食品的生产加工及消费进行了论述,主要对模拟蟹肉、鱼丸、鱼豆腐、腰花肠、包心鱼丸等海洋仿生食品的生产加工进行了详细介绍。%The comprehensive production, processing and consume of marine bionic food at home and abroad were re-viewed in this paper. The imitation crab meat, fish balls, fish tofu, fish sausages, and stuffed fish balls were introduced in detail.

  18. Evaluation of music perception in adult users of HiRes® 120 and previous generations of Advanced Bionics® sound coding strategies

    OpenAIRE

    Gazibegovic, D; Arnold, L; Rocca, C; Boyle, P.

    2009-01-01

    Im Jahr 2007 hat Advanced Bionics® die neuartige Sprachverarbeitungsstrategie HiRes® 120 eingeführt. Erste klinische Ergebnisse mit HiRes 120 deuten auf ein verbessertes Sprachverstehen in Umgebungen mit Störgeräusch sowie eine verbesserte Musikqualität und -natürlichkeit hin. Ziel der Evaluierung ist es, zu untersuchen, ob es unterschiede in der Musikwahrnehmung, Hörhäufigkeit und der Fähigkeit zum Unterscheiden bestimmter musikalischen Merkmale zwischen drei verschiedenen Generationen ...

  19. Study on Cyberdomain Robustness Based on Concept of Bionics%基于仿生概念的网电空域鲁棒性研究

    Institute of Scientific and Technical Information of China (English)

    周永学; 丁国良; 原亮

    2014-01-01

    阐述了网电空域研究工作中以仿生方式进行电磁防护研究的基本内容,对研究内容在整个仿生领域中予以定位。定义了网电空域的基本概念,分析了空间电磁环境的安全问题,建立了电磁防护仿生研究的表象级对等模型,提出并归纳了研究策略和实现基础。根据结构和功能的关系进行相应方案的规划,并结合生物鲁棒性的研究成果,在分级冗余基础上考虑鲁棒裕度设计,描述网络简并、功能梯度和旁路易化的特征。因此,使得网电环境下电磁防护的仿生构想在技术上成为可能。%Discuss the basic content of studying the electromagnetic protection with bionics in cyberdomain,and locate them in the section of bionic axis. Define “cyberdomain” and analyze the security problem of spatial electromagnetic environment,establish the representa-tion equivalent model of electromagnetic protection bionic research,and summarize the research strategy and implementation basis. Ac-cording to the relationship between the structure and function,the corresponding scheme is planning,and combined with the research re-sults of biological robustness,based on hierarchical redundancy,considering the robust tolerance design,describe the characteristics of net-work degeneracy,functional gradient. Thus,in cyber field,the hypothesis of electromagnetic protection by means of applying bionic tech-nology has become a reality.

  20. Design and preparation of polyurethane-collagen/ heparin-conjugated polycaprolactone double-layer bionic small-diameter vascular graft and its preliminary animal tests

    Institute of Scientific and Technical Information of China (English)

    LU Guang; CUI Shi-jun; GENG Xue; YE Lin; CHEN Bing; FENG Zeng-guo; ZHANG Jian

    2013-01-01

    Background People recently realized that it is important for artificial vascular biodegradable graft to bionically mimic the functions of the native vessel.In order to overcome the high risk of thrombosis and keep the patency in the clinical small-diameter vascular graft (SDVG) transplantation,a double-layer bionic scaffold,which can offer anticoagulation and mechanical strength simultaneously,was designed and fabricated via electrospinning technique.Methods Heparin-conjugated polycaprolactone (hPCL) and polyurethane (PU)-collagen type Ⅰ composite was used as the inner and outer layers,respectively.The porosity and the burst pressure of SDVG were evaluated.Its biocompatibility was demonstrated by the 3-(4,5-dimethyl-2-thiazol)-2,5-diphenyl-2H tetrazolium bromide (MTT) test in vitro and subcutaneous implants in vivo respectively.The grafts of diameter 2.5 mm and length 4.0 cm were implanted to replace the femoral artery in Beagle dog model.Then,angiography was performed in the Beagle dogs to investigate the patency and aneurysm of grafts at 2,4,and 8 weeks post-transplantation.After angiography,the patent grafts were explanted for histological analysis.Results The double-layer bionic SDVG meet the clinical mechanical demand.Its good biocompatibility was proven by cytotoxicity experiment (the cell's relative growth rates (RGR) of PU-collagen outer layer were 102.8%,109.2% and 103.5%,while the RGR of hPCL inner layer were 99.0%,100.0% and 98.0%,on days 1,3,and 5,respectively) and the subdermal implants experiment in the Beagle dog.Arteriography showed that all the implanted SDVGs were patent without any aneurismal dilatation or obvious anastomotic stenosis at the 2nd,4th,and 8th week after the operation,except one SDVG that failed at the 2nd week.Histological analysis and SEM showed that the inner layer was covered by new endothelial-like cells.Conclusion The double-layer bionic SDVG is a promising candidate as a replacement of native small

  1. SMA丝驱动的仿生尾鳍推进器的实验研究%Experimental Research on Bionic Caudal Fin Actuated by SMA Wires

    Institute of Scientific and Technical Information of China (English)

    李健; 郭艳玲; 王振龙; 袁斯洋

    2013-01-01

    To study the movement mechanism of fish caudal fin,a bionic caudal fin propulsor actuated by SMA wires imitating the real fin well was developed based on studying its structure.The propulsive performance experimental results revealed the relation between thrust with action parameters,configuration and dimension of caudal fin.For further research on the hydromechanical mechanism,a surface flow display system was developed based on poly tetra fluoro ethylene (PTFE)micro powder.Visualization research of the formation process of vortex ring produced by the bionic propulsor was successfully done on the forementioned system.The experimental results approve of the swimming characters and mechanism of caudal fin.The bionic caudal fin is suited to research fish swimming mechanism and as a groundwork for further research on bionic robot fish.%为了研究鱼类尾鳍的推进机理,在研究鱼类尾鳍结构的基础上,研制了形状记忆合金(SMA)丝驱动的仿生尾鳍推进器,并完成了其推进性能试验,得到了动作参数、被动尾鳍形态、尺寸对推进力的影响.为进一步研究其流场机制,研制了基于改性聚四氟乙烯微粉(PTFE)的液面流场显示系统,并在该系统上对尾鳍推进器摆动后的涡环形成过程进行了可视化研究,实验结果验证了文献中鱼类真实尾鳍的游动特点和游动机制,可见所研制的仿生尾鳍推进器仿生性能好,适用于鱼类游动机理研究,并为仿生鱼的研制奠定了基础.

  2. Technologies for Bionic Simulation of Osteocyte Microenvironment%骨细胞微环境仿生模拟技术

    Institute of Scientific and Technical Information of China (English)

    任丽; 续惠云; 骞爱荣; 商澎

    2014-01-01

    mechanical stimulations.The microenvironment surrounding osteocyte is therefore of crucial importance to both elucidating the mechanism of mechanical perception and discovery of new biological functions.However,the complicated lacuna-canalicular network surrounded by rigid bone matrix makes the study of osteocyte in vivo technically difficult.It can be of great significance to reconstruct bionic microenvironment in vitro for further revealing the functions of osteocyte.The systematic introduction of structural,biochemical and mechanical microenvironment surrounding osteocyte was presented here,and the recent technologies for simulation of bionic microenvironment in vitro were also reviewed.This review will provide a useful reference for researchers who are interested in osteology,tissue engineering and regenerative medicine.

  3. Verifying with tests the improved dynamic and passive damping behavior of components: structural optimization based on bionic principles

    Science.gov (United States)

    Weiss, Johannes; Maier, Martin; Herrmann, Hans-Georg; Steibler, Philipp

    2004-07-01

    In the automotive industry, the need for affordable lightweight structures rises as new fuel consumption regulations tighten and customers demand for performance increases. One way of achieving a cost-effective and weight-optimal design is by means of structural optimization. In 1991, A. Baumgartner, S. Burkhardt and C. Mattheck published their first paper on topology optimization based on bionic principles. Nature is inevitably dependent on the most efficient use of the body's mass. Using a fully-stressed-method, the original SKO-method is able to optimize engineering components with regard to maximum strength and stiffness. For several years now, the SKO-method has been successfully applied and enhanced for complex structural optimization at the Research & Technology Division of DaimlerChrysler AG. The subject presented in this paper was investigated in cooperation with the Institut fur Verbundwerkstoffe GmbH at the Technical University of Kaiserslautern. The aim is to present the new developments concerning the SKO-method. Starting with a short introduction to the original SKO-method, the newly implemented FreedOpt (Frequency and Damping Optimization) module is explained afterwards. FreedOpt can tune natural frequencies to a desired level. In cases were the tuning of frequencies is not sufficient, damping is needed. The new module is able to optimize the utilization of damping material with a new approach based on maximizing the dissipated vibration energy. The main focus of the paper is on the verification of the simulation results with physical tests. Finally, the new tool is applied to automotive parts. Concluding, the authors give an outlook for future work.

  4. An insect-inspired bionic sensor for tactile localisation and material classification with state-dependent modulation

    Directory of Open Access Journals (Sweden)

    Luca ePatanè

    2012-08-01

    Full Text Available Insects carry a pair of antennae on their head: multimodal sensory organs that serve a wide range of sensory-guided behaviours. During locomotion, antennae are involved in near-range orientation, for example in detecting, localising, probing and negotiating obstacles.Here we present a bionic, active tactile sensing system inspired by insect antennae. It comprises an actuated elastic rod equipped with a terminal acceleration sensor. The measurement principle is based on the analysis of damped harmonic oscillations registered upon contact with an object. The dominant frequency of the oscillation is extracted to determine the distance of the contact point along the probe, and basal angular encoders allow tactile localisation in a polar coordinate system. Finally, the damping behaviour of the registered signal is exploited to determine the most likely material.The tactile sensor is tested in four approaches with increasing neural plausibility: First, we show that peak extraction from the Fourier spectrum is sufficient for tactile localisation with position errors below 1%. Also, the damping property of the extracted frequency is used for material classification. Second, we show that the Fourier spectrum can be analysed by an Artificial Neural Network which can be trained to decode contact distance and to classify contact materials. Thirdly, we show how efficiency can be improved by band-pass filtering the Fourier spectrum by application of non-negative matrix factorisation. This reduces the input dimension by 95% while reducing classification performance by 8% only. Finally, we replace the FFT by an array of spiking neurons with gradually differing resonance properties, such that their spike rate is a function of the input frequency. We show that this network can be applied to detect tactile contact events of a wheeled robot, and how detrimental effects of robot velocity on antennal dynamics can be suppressed by state-dependent modulation of the

  5. Restoration of vision in blind individuals using bionic devices: a review with a focus on cortical visual prostheses.

    Science.gov (United States)

    Lewis, Philip M; Ackland, Helen M; Lowery, Arthur J; Rosenfeld, Jeffrey V

    2015-01-21

    The field of neurobionics offers hope to patients with sensory and motor impairment. Blindness is a common cause of major sensory loss, with an estimated 39 million people worldwide suffering from total blindness in 2010. Potential treatment options include bionic devices employing electrical stimulation of the visual pathways. Retinal stimulation can restore limited visual perception to patients with retinitis pigmentosa, however loss of retinal ganglion cells precludes this approach. The optic nerve, lateral geniculate nucleus and visual cortex provide alternative stimulation targets, with several research groups actively pursuing a cortically-based device capable of driving several hundred stimulating electrodes. While great progress has been made since the earliest works of Brindley and Dobelle in the 1960s and 1970s, significant clinical, surgical, psychophysical, neurophysiological, and engineering challenges remain to be overcome before a commercially-available cortical implant will be realized. Selection of candidate implant recipients will require assessment of their general, psychological and mental health, and likely responses to visual cortex stimulation. Implant functionality, longevity and safety may be enhanced by careful electrode insertion, optimization of electrical stimulation parameters and modification of immune responses to minimize or prevent the host response to the implanted electrodes. Psychophysical assessment will include mapping the positions of potentially several hundred phosphenes, which may require repetition if electrode performance deteriorates over time. Therefore, techniques for rapid psychophysical assessment are required, as are methods for objectively assessing the quality of life improvements obtained from the implant. These measures must take into account individual differences in image processing, phosphene distribution and rehabilitation programs that may be required to optimize implant functionality. In this review, we

  6. Study on the Piezoelectric Transformer in the Bionic Active Member%仿生主动构件压电变换器研究

    Institute of Scientific and Technical Information of China (English)

    杜设亮; 傅建中; 张云; 陈子辰

    2001-01-01

    Piezoelectric transformer is an important part in the bionic active member and it is an interactive electromechanical-coupled system. Piezoelectric intelligent structure models are presented from various angles and the effect of parameters of the piezoelectric coupled electromechanical system on the energy conversion efficiency of piezoelectric transformer is especially discussed in this paper. The establishment of the coupled model of the piezoelectric intelligent structure is helpful to interpret the physical essence of the bionic active member and to design the intelligent structure with better performance and higher efficiency.%压电变换器是仿生主动构件中的一个重要组成部分,是一个机电耦合的交互系统。提出了如何从多角度出发建立压电型智能结构的理论模型,并讨论了压电耦合机电系统各参数对压电变换器的能量转换效率的影响。压电型智能结构机电耦合模型的建立有助于解释仿生主动构件的物理实质,设计出性能更好、效率更高的智能结构。

  7. Underwater detection and obstacle avoidance of bionic machine fish%仿生机器鱼的水下探测和避障控制

    Institute of Scientific and Technical Information of China (English)

    王坤; 冯静安; 王卫兵

    2013-01-01

    文章提出了一种集成多红外测距传感器、GPS定位器、CMOS摄像头的仿生机器鱼,建立了仿生机器鱼传感器网络,设计了机器鱼的机构组成和技术参数,制定了一种仿生机器鱼游动规则库和控制方法,定义了10种机器鱼基本运动形式和几种转弯模式,使其在设定的游动规则中自主游动,主动避障,探测水下情况,实验验证了其有效性。%A bionic machine fish integrating infrared distance sensors ,GPS locator ,CMOS cameras is put forward .Robotic fish sensor network is established and the composition of the fish and the tech-nological parameters are set .A kind of swimming rule base and control method of the bionic machine fish is developed ,and ten kinds of basic movement forms and several turning modes of the fish are de-fined ,which makes the fish automatically swim ,actively avoid obstacle ,and detect underwater situa-tion by the defined swimming rules .The validity is verified by the experiments .

  8. Optimization Design of MEMS Bionic Vector Hydrophone%MEMS仿生矢量水听器优化设计

    Institute of Scientific and Technical Information of China (English)

    刘林仙; 张国军; 张文栋

    2013-01-01

    The MEMS bionic hair cell single vector hydrophone has the disadvantages of low sensitivity and obvious frequency response fluctuation. On the basis of theoretical analysis and simulation calculation, the hydrophone was optimized in this paper. The plastic cylinder was replaced by optical fiber as the material of cilia and a novel "half oil and half polyurethane" package structure was proposed. The hydrophone calibration was finished in National Defense Underwater Acoustics Calibration Laboratory of China. Results show that the performance of the hydrophone was greatly improved compared with that of the previous, with a sensitivity of -165 dB (including pre-amplification 26 dB), a frequency response range of 20 Hz-2 kHz(±4 dB) ,and a good directional pattern in the form of "8"-shape.%针对纤毛式MEMS仿生单矢量水听器灵敏度偏低、频响曲线起伏较大的缺陷,对该结构水听器进行了优化设计.通过理论分析和仿真计算,从两方面进行了优化,一是纤毛材料的选择,选用光纤替代塑料柱体;二是设计了一种“半油半酯”新型封装结构.最后在国防水声一级计量站对该封装水听器进行了相应的校准测试.测试结果表明,该水听器性能较之前有了明显提高,灵敏度达到-165 dB(包括前置放大26 dB),频响范围为20 Hz~2 kHz(±4 dB),具有良好的“8”字型指向性.

  9. Physiological and Ecological Theory and Technical Approach of Bionic Wild Production——A Case of Bionic Wild Production of Walnut in Tibetan Mountain%仿野生生产方式的生理生态学原理与技术途径——以西藏山地核桃仿野生栽培为例

    Institute of Scientific and Technical Information of China (English)

    关法春; 兰小中

    2012-01-01

    According to the practical demand of harmonious development between the ecological environment protection and genuine agricultural products, bionic wild production was propounded, including its conception, theoretical constitution and technical approach. Based on the organic combination between the inner constituents in system and environment, bionic wild production became a new advanced ecological agro-ecosystem, which is based upon the maintenance of the eco-system balance and biodiversity protection, and whose products accord with the needs of industrialization development in genuineness. Bionic wild production comprises the theory of physiology, ecology, compensation effect, agro-climatology, which its realistic technical approach was propounded, in order to promote the development of ecological agriculture.%针对生态环境保护和道地农产品生产协调发展的现实需求,提出仿野生生产方式的概念、理论构成和技术途径.仿野生生产方式强调系统内各组分与环境之间的有机组合,从而形成新的高级生态农业系统,其在维持生态系统平衡和生物多样性保护的基础上,生产出的产品在道地性上符合产业化发展的需要;仿野生生产方式从生理学理论、生态学理论、补偿效应原理、农业气候学理论等方面出发构建其理论基础,并基于理论形成具体的技术途径,以期推动生态农业理论的发展.

  10. Study on bionic flexible workflow modeling and adaptation algorithm%仿生柔性工作流建模与适应算法研究

    Institute of Scientific and Technical Information of China (English)

    王颖慧; 王东勃; 王增磊; 刘志忠

    2011-01-01

    为提高柔性工作流对外界动态变化的响应速度,将生物的反射机理引入柔性工作流,构建了柔性工作流神经网络系统.模仿生物响应外界刺激的反射机理,利用人工神经网络技术,在柔性工作流中建立了仿生柔性工作流模型,定义了该模型中的人工神经网络概念模型,并以该模型为基础,提出了柔性工作流适应算法框架.最后,以企业生产计划节点工时定额的制定为例,构建了处理元群为BP网络的仿生柔性工作流模型,对柔性工作流适应算法进行仿真.仿真结果显示,建立的模型能够根据参数的动态变化作出正确的响应,从而证明仿生柔性工作流适应算法能够智能响应外界动态变化.%To improve the responding speed of the flexible workflow to the external dynamic changes, introduced the biological mechanism of reflection into the flexible workflow, builded the neural network system in the flexible workflow. By using of the biological mechanism of reflection to the stimulus, created the bionic flexible workflow model and defined the concept model of artificial neural network in a flexible workflow with artificial neural network technology, then, proposed a framework of flexible workflow adaptation algorithm based on the above model. Finally, with an example of working hour quota set in the enterprise production planning node, simulated the flexible workflow adaptation algorithm based on the bionic flexible workflow model which the type of the processing neural group was BP model. Simulation results show that the established model can make correct response to the dynamic changes according to the parameters, thus proving the adaptation algorithm of bionic flexible workflow can respond to outside dynamic change intelligently.

  11. 一种仿生机械臂空间位置反馈方法的研究%Position Feedback of Bionic Manipulator Following Electrooculography Signals

    Institute of Scientific and Technical Information of China (English)

    贺巧玲; 张进华; 李婷; 洪军

    2012-01-01

    To solve bionic manipulator space position feedback, electrooculography (EOG) is used as the neurofeedback in the system. The mapping rules between the eye rotation angle and the corresponding EOG are analyzed by the experiment,in which the subjects repeatedly scan the multi-angle targets, and then the location model based on binocular vision of human eye is established; then the targets location information extracted from the parametric location model is converted to the manipulator coordinates via the quaternion coordinate transformation model between human eye and manipulator on the physics experiment platform to guide the positioning. The results show that the location model following binocular vision of human eye enables to effectively extract targets coordinates to provide space position feedback for bionic manipulator; simultaneously it provides a new idea for bionic manipulator space position feedback.%为了解决仿生机械臂空间位置反馈的问题,将眼电图作为神经反馈,应用于仿生机械臂空间位置反馈系统,通过多角度目标点重复扫视实验,分析眼球转动角度与对应眼电信号特征之间的映射规律,建立了人眼双目视觉定位模型.采用四元数法构建人眼、仿生机械臂坐标转换模型,并通过自行设计的物理实验平台进行坐标转换参数标定、计算旋转矩阵和平移向量,根据参数化定位模型将提取到的目标点转换为机械臂坐标系位置信息,从而实现了空间定位.研究结果表明,人眼双目视觉的定位模型可以有效地提取目标点坐标,为仿生机械臂提供空间位置反馈,同时也为仿生机械臂空间位置反馈提供了新思路.

  12. BIONICOL. Development of a bionic solar collector with an aluminium roll-bond absorber; BIONICOL. Entwicklung eines bionischen Solarkollektors mit Aluminium-Rollbond-Absorber

    Energy Technology Data Exchange (ETDEWEB)

    Hermann, Michael; Lunz, Karin [Fraunhofer-Institut fuer Solare Energiesysteme, Freiburg (Germany); Hillerns, Frank [TYFOROP Chemie GmbH, Hamburg (Germany)

    2010-07-01

    The authors of the contribution under consideration report on the development of a bionic solar collector with an aluminum roll-bond absorber. As part of the EU research project BIONICOL experiments and simulations are performed with respect to fluid mechanics, internal pressure stability and corrosion. First absorbers with a size of 1,060 mm x 1,820 mm are manufactured. The measured pressure loss is lower than the pressure loss of the hydraulically optimized volumetric absorber according to TREIKAUSKAS. Several studies suggest that adequate corrosion protection is achieved under conditions of stagnation, if TYFOCOR {sup registered} L in an aluminum roll bond-absorbers is used. Measurements at collectors (efficiency curve and stagnation behaviour) as well as the further development of the collector to prototypes for demonstration plants are planned as next steps.

  13. Influence of processing medium on frictional wear properties of ball bearing steel prepared by laser surface melting coupled with bionic principles

    International Nuclear Information System (INIS)

    Coupling with bionic principles, an attempt to improve the wear resistance of ball bearing steel (GCr15) with biomimetic units on the surface was made using a pulsed Nd: YAG laser. Air and water film was employed as processing medium, respectively. The microstructures of biomimeitc units were examined by scanning electron microscope and X-ray diffraction was used to describe the microstructure and identify the phases as functions of different mediums as well as water film with different thicknesses. The results indicated that the microstructure zones in the biomimetic specimens processed with water film were more refined and had better wear resistance increased by 55.8% in comparison with that processed in air; a significant improvement in microhardness was achieved by laser surface melting. The application of water film provided considerable microstructural changes and much more regular grain shape in biomimetic units, which played a key role in improving the wear resistance of ball bearing steel.

  14. Influence of processing medium on frictional wear properties of ball bearing steel prepared by laser surface melting coupled with bionic principles

    Energy Technology Data Exchange (ETDEWEB)

    Zhou Hong, E-mail: wangct08@mails.jlu.edu.c [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Wang Chengtao [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Faw-Volkswagen Automotive Company Ltd., Changchun 130011 (China); Guo Qingchun [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Brilliance Automobile Engineering Research Institute, Shenyang 110141 (China); Yu Jiaxiang [Key Lab of Automobile Materials, Ministry of Education, Jilin University, Changchun 130025 (China); Wang Mingxing [State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, 15 Beisihuanxi Road, Beijing 100190 (China); Liao Xunlong [Technical Management Department, CNNC China Zhongyuan Engineering Corp. Ltd., No 487 Tianlin Road, Shanghai 200233 (China); Zhao Yu [School of Materials Science and Engineering, Changchun University of Technology, Changchun 130012 (China); Ren Luquan [Key Lab of Terrain Machinery Bionics Engineering, Ministry of Education, Jilin University, Changchun 130025 (China)

    2010-09-03

    Coupling with bionic principles, an attempt to improve the wear resistance of ball bearing steel (GCr15) with biomimetic units on the surface was made using a pulsed Nd: YAG laser. Air and water film was employed as processing medium, respectively. The microstructures of biomimeitc units were examined by scanning electron microscope and X-ray diffraction was used to describe the microstructure and identify the phases as functions of different mediums as well as water film with different thicknesses. The results indicated that the microstructure zones in the biomimetic specimens processed with water film were more refined and had better wear resistance increased by 55.8% in comparison with that processed in air; a significant improvement in microhardness was achieved by laser surface melting. The application of water film provided considerable microstructural changes and much more regular grain shape in biomimetic units, which played a key role in improving the wear resistance of ball bearing steel.

  15. Informed parental consent for cochlear implantation of young deaf children: social and other considerations in the use of the 'bionic ear'.

    Science.gov (United States)

    Hyde, M; Power, D

    2000-05-01

    This paper examines the social parameters surrounding the management of informed consent procedures for the parents of young deaf children for the surgical fitting of a cochlear implant ('bionic ear') to their child. Although most observers of this remarkable and well publicised medical development only see benefits in its use, the authors examine the nature of the conflict which has emerged between medical and media portrayals of the 'miracle' device and contrasting social, cultural and linguistic views of many Deaf people. The paper analyses the components of parental consent procedures for surgical implantation of their child, covering the risk-benefit analysis and, in particular, the information base that is provided for parents about the social construction of a 'Deaf life' by many Deaf people. PMID:14627014

  16. Born-Infeld extension of Lovelock brane gravity in the system of M0-branes and its application for the emergence of Pauli exclusion principle in BIonic superconductors

    Science.gov (United States)

    Sepehri, Alireza

    2016-07-01

    Recently, some authors (Cruz and Rojas, 2013 [1]) have constructed a Born-Infeld type action which may be written in terms of the Lovelock brane Lagrangians for a given dimension p. We reconsider their model in M-theory and study the process of birth and growth of nonlinear spinor and bosonic gravity during the construction of Mp-branes. Then, by application of this idea to BIonic system, we construct a BIonic superconductor in the background of nonlinear gravity. In this model, first, M0-branes link to each other and build an M5-brane and an anti-M5-brane connected by an M2-brane. M0-branes are zero dimensional objects that only scalars are attached to them. By constructing higher dimensional branes from M0-branes, gauge fields are produced. Also, if M0-branes don't link to each other completely, the symmetry of system is broken and fermions are created. The curvature produced by fermions has the opposite sign the curvature produced by gauge fields. Fermions on M5-branes and M2 plays the role of bridge between them. By passing time, M2 dissolves in M5's and nonlinear bosonic and spinor gravities are produced. By closing M5-branes towards each other, coupling of two identical fermions on two branes to each other causes that the square mass of their system becomes negative and some tachyonic states are created. For removing these tachyons, M5-branes compact, the sign of gravity between branes reverses, anti-gravity is produced which causes that branes and identical fermions get away from each other. This is the reason for the emergence of Pauli exclusion principle in Bionic system. Also, the spinor gravity vanishes and its energy builds a new M2 between M5-branes. We obtain the resistivity in this system and find that its value decreases by closing M5 branes to each other and shrinks to zero at colliding point of branes. This idea has different applications. For example, in cosmology, universes are located on M5-branes and M2-brane has the role of bridge between

  17. Bionic imagery associated with product form design%意象关联产品形态仿生设计方法

    Institute of Scientific and Technical Information of China (English)

    袁雪青; 陈登凯; 杨延璞; 戚彬

    2014-01-01

    以生物体侧面主特征线为研究对象,提出了建立基于用户意象的仿生设计基因库思想和方法流程,旨在提高设计师对仿生原型的获取。选取生物体侧面轮廓线作为研究对象,利用贝塞尔曲线将其量化描述;通过调研获得用户期望意象形容词,经过聚类分析得到关键意象词汇并将其量化表征,输入库中获取生物原型。以u-fi猫的设计验证了该方法的合理性和可行性。%Line side of the main features in the organism for the study, it proposes the establishment of user-based imagery bionic design ideas and methods of gene libraries processes designed to improve access to designer bionic prototypes. It selects the organism side contours as the research object, uses Bezier curves to quantify the description. It gets user expectation imagery adjectives through research, critical imagery vocabulary is got through cluster analysis and quantified characteri-zation, it enters the library to obtain biologicalprototype. In u-fi cat design, it verifies rationality and feasibility of the method.

  18. 基于多元仿生的快速响应设计研究%Research on rapid response design based on multiple bionic

    Institute of Scientific and Technical Information of China (English)

    刘伟; 曹国忠; 郭德斌; 邢锡金

    2015-01-01

    为提高生物知识在产品创新设计中的利用效率,特别是对产品快速响应设计的支持,提出了一种面向系统功能实现的多元仿生设计方法。该方法以多生物效应为核心工具,配合生物系统建模方法、生物原型的技术转化方法,结合新的产品功能建模技术,能够快速地将生物原型转化成为满足市场新需求的产品技术系统,与现有技术特别是与传统仿生设计相比得以显著改良。最后利用上述理论以新型假山石制造设备的开发设计为例验证其实用性价值。%To improve the efficiency of biological knowledge utilizing in the products'innovative design ,especially to support the rapid response design of products ,a multi‐bionics design method oriented to systematically functional implement was proposed .Multi biological effects coopera‐ting with biological system modeling method and technical conversion of the biological prototype was used .By comprehensively using the new products function modeling method ,the biological prototype could be converted into products'technical system satisfying the new market needs . The new method had obvious advantage over the ordinary bionics method .Lastly ,the design of a new kind rockery making instrument was used as an example to verify the practical value of the proposed theory .

  19. 仿生设计在家用纺织品中的应用%Application of bionics design in home textiles

    Institute of Scientific and Technical Information of China (English)

    汪文忠

    2015-01-01

    Bionics design makes modern home textiles better meet the individual demand of market and consumer. The textiles with bionics design can also adapt to the demand of the times. Individual customization and demand have become trends, which not only show distinctive style, but also bring beauty and convenience to the daily life and work of people. The design contains a unique insight into natural and social, reflecting the concept of "Unity of Man and Nature". The textiles are not merely the duplicate, mechanical and stiff industrial products, but can be full of vitality and interestingness.%仿生设计使现代家用纺织品能够更好地满足市场和消费的个性化需求,运用到纺织品设计能使其顺应时代需求.个性化的定制和需求已成为潮流趋势,展现个体鲜明风格的同时为人们的日常生活与工作带来了美与便利,而其中所蕴含的对自然、社会的独特理解,体现"天人合一"的整体观念即"人与自然统一"观点.纺织品不再只是单纯的复制、机械、生硬的工业产品,更加充满生命活力和趣味性.

  20. 中药材仿生栽培效益分析及其展望%Current Situation and Prospects of Bionic Cultivation of Chinese Medicinal Materials

    Institute of Scientific and Technical Information of China (English)

    倪鼎文

    2016-01-01

    Bionic cultivation of Chinese medicinal materials is an intensive Chinese herbal medicine production mode, applying engineering approach in reappearing ecological relationship between medical plants and external environment, adopting modern agricultural production technique, and absorbing the essence of traditional agriculture according to the growth habits of medicinal plants and their requirements on ecological environment. It has obvious economic benefits, ecological benefits and social benefits, adopts the bionic cultivation of authentic Chinese herbal medicine, which has great significance to protecting the ecological environment, improving the quality of cultivation of medicinal materials, meeting the demand of social medicine, and is also the most effective way to ensure the sustainable development of TCM resources.%中药材仿生栽培是根据药用植物生长发育习性及其对生态环境的要求,吸取传统农业的精华,采用现代农业生产技术,运用系统工程方法再现药用植物与外界环境的生态关系而进行中药材集约化生产的模式,具有明显的经济效益、生态效益和社会效益,实行道地中药材的仿生栽培,对保护生态环境、提高栽培药材质量、满足社会用药需求均具有重要意义,也是保证中药资源可持续发展最有效的途径。

  1. 植物甾醇烟酸酯的合成及HPLC法的测定%Synthesis of bionic ester of phytosterol and analysis of it by HPLC

    Institute of Scientific and Technical Information of China (English)

    施光宗; 洪挺; 陆豫

    2011-01-01

    The overall yield of the two-step synthesising bionic ester of phytosterol was 87. 4% and the production was validated by liquid chromatograph/mass spectrometer (HPLC/MS). Homemadebionic ester of stigmasterol for the standard substance, The HPLC methods for bionic ester of phytosterol was established ,Chromatographic condition: reversed-phase column(150 mm×4. 6 mm)filled with 5 μm Eclipse XDB C18 Column as the solid phase, mobile phase was CH3OH, flow-rate was 1. 2 mL/min, detection wavelength was 210 nm,column temperature was 35℃. The experimental results showed that the method was simple,sensitive and accurate .%采用两步法合成植物甾醇烟酸酯,产物总收率为87.4%.通过液质联用仪对产物进行验证.豆甾醇烟酸酯为标准物,应用高效液相色谱法对产物中植物甾醇烟酸酯的含量进行了分析测定.以Eclipse XDB-C18柱(4.6mm×150 mm,5μm)为分析柱,甲醇为流动相,流速是1.2 mL/min,紫外210 nm检测,柱温35℃.实验结果表明,该方法快速、简便、分离度好.

  2. 仿生扭波推进模型航行试验研究%Test of bionic robot-fish swimming by torsional wave propulsion

    Institute of Scientific and Technical Information of China (English)

    蒋小勤; 杜德锋; 李晓前; 符颖

    2013-01-01

    Based on the research of the swimming modes and physical construction of Gymnarchus niloticus fish(GNF) , a bionic robot-fish was build which can simulate the torsional wave propulsion of GNF realistically and produce a strong propulsion force so as to explore the hydrodynamic mechanism of torsional wave propulsion of the long-based flexible fin. A series of swimming experiments was made with this bionic robot-fish model in a pool. The results show that the speed of the model is proportional to the wave s frequency. The method of measuring the power of fish fin to push water in swimming was proposed. The power of fish's fin was proved to be proportional to the cubic of the wave s frequency.%为研究长鳍扭波推进的水动力性能,在对尼罗河魔鬼鱼形体构造、游动模式研究的基础上,研制了一种仿生长鳍扭波推进航行器.该推进器能逼真地模仿尼罗河魔鬼鱼长背鳍的扭波运动模式,产生强劲的水动力.在水池中开展扭波推进模型航行试验,得到了航行速度与扭波频率的关系曲线.该曲线表明:扭波推进模型的航行速度与扭波频率成正比.提出了一种测量机器鱼鱼鳍推水功率的实验方法,实验结果表明:扭波长鳍的推水功率与扭波频率的3次方成正比.

  3. SU-E-T-570: Management of Radiation Oncology Patients with Cochlear Implant and Other Bionic Devices in the Brain and Head and Neck Regions

    Energy Technology Data Exchange (ETDEWEB)

    Guo, F.Q; Chen, Z; Nath, R [Yale New Haven Hospital, New Haven, CT (United States); Yale UniversitySchool of Medicine, New Haven, CT (United States)

    2014-06-01

    Purpose: To investigate the current status of clinical usage of cochlear implant (CI) and other bionic devices (BD) in the brain and head and neck regions (BH and N) and their management in patients during radiotherapy to ensure patient health and safety as well as optimum radiation delivery. Methods: Literature review was performed with both CIs and radiotherapy and their variants as keywords in PubMed, INSPEC and other sources. The focus was on CIs during radiotherapy, but it also included other BDs in BHȦN, such as auditory brainstem implant, bionic retinal implant, and hearing aids, among others. Results: Interactions between CIs and radiation may cause CIs malfunction. The presence of CIs may also cause suboptimum dose distribution if a treatment plan was not well designed. A few studies were performed for the hearing functions of CIs under irradiations of 4 MV and 6 MV x-rays. However, x-rays with higher energies (10 to 18 MV) broadly used in radiotherapy have not been explored. These higher energetic beams are more damaging to electronics due to strong penetrating power and also due to neutrons generated in the treatment process. Modern CIs are designed with more and more complicated integrated circuits, which may be more susceptible to radiation damage and malfunction. Therefore, careful management is important for safety and treatment outcomes. Conclusion: Although AAPM TG-34, TG-63, and TG-203 (update of TG-34, not published yet) reports may be referenced for management of CIs and other BDs in the brain and H and N regions, a site- and device-specified guideline should be developed for CIs and other BDs. Additional evaluation of CI functions under clinically relevant set-ups should also be performed to provide clinicians with better knowledge in clinical decision making.

  4. SU-E-T-570: Management of Radiation Oncology Patients with Cochlear Implant and Other Bionic Devices in the Brain and Head and Neck Regions

    International Nuclear Information System (INIS)

    Purpose: To investigate the current status of clinical usage of cochlear implant (CI) and other bionic devices (BD) in the brain and head and neck regions (BH and N) and their management in patients during radiotherapy to ensure patient health and safety as well as optimum radiation delivery. Methods: Literature review was performed with both CIs and radiotherapy and their variants as keywords in PubMed, INSPEC and other sources. The focus was on CIs during radiotherapy, but it also included other BDs in BHȦN, such as auditory brainstem implant, bionic retinal implant, and hearing aids, among others. Results: Interactions between CIs and radiation may cause CIs malfunction. The presence of CIs may also cause suboptimum dose distribution if a treatment plan was not well designed. A few studies were performed for the hearing functions of CIs under irradiations of 4 MV and 6 MV x-rays. However, x-rays with higher energies (10 to 18 MV) broadly used in radiotherapy have not been explored. These higher energetic beams are more damaging to electronics due to strong penetrating power and also due to neutrons generated in the treatment process. Modern CIs are designed with more and more complicated integrated circuits, which may be more susceptible to radiation damage and malfunction. Therefore, careful management is important for safety and treatment outcomes. Conclusion: Although AAPM TG-34, TG-63, and TG-203 (update of TG-34, not published yet) reports may be referenced for management of CIs and other BDs in the brain and H and N regions, a site- and device-specified guideline should be developed for CIs and other BDs. Additional evaluation of CI functions under clinically relevant set-ups should also be performed to provide clinicians with better knowledge in clinical decision making

  5. Artificial Life Model Based on Bionic Fish%基于仿生机器鱼的人工生命模型

    Institute of Scientific and Technical Information of China (English)

    金旭东; 薛方正

    2012-01-01

    为了构建具有自学习、自适应、自协调的人工生命体,结合对鱼类生理结构和行为机理的研究和分析,提出了基于人工生命的仿生机器鱼系统。将非接触式供电技术应用于水下供电,模拟鱼类生理活动,在仿生鱼上实现了动态、无连接、不间断的电能供给,并且基于鱼类行为的层次结构,实现了"动机-行为-动作"的3层行为决策系统,引入强化学习算法,模拟鱼类与环境交互的后天学习过程。通过实物仿生鱼的游姿优化实验,证明了研究和设计工作的有效性。%In order to build self-learning, adaptive, self-coordination of intelligent agent, and combining with the research and analysis on physiological structure and behavior mechanism of natural fish, we proposed the artificial life system model of bionic fish. The paper applied non-contact power supply technology in underwater electrical supply, simulated physiological activity of natural fish, and real- ized dynamic, no-connection, uninterrupted power supply in bionic fish; Based on fish behavior hierarchy, the paper achieved the "motive-behavior-action" three layers decision-making system, and introduced the reinforcement learning algorithm to simulate environmental interaction learning process. The experiment of swim posture optimization verified the effectiveness of the research and design work.

  6. Bionics in industrial design

    OpenAIRE

    Despot, Katerina; Sandeva, Vaska

    2014-01-01

    The design represents the external appearance of a product or object. The design is what makes the product appealing, beautiful and desirable, and thus significantly affects the product sales and the increase in its commercial and artistic value. The industrial design of a certain product is consisted of three-dimensional and two-dimensional features of the product visible in its normal use. The three-dimensional features are the form and the lines of the product, and the two-dimensional are ...

  7. Hailing the bionic taxi

    Energy Technology Data Exchange (ETDEWEB)

    Kelley, T

    1990-02-01

    This article reports on the development and marketing of the GSM, a passenger vehicle capable of running on natural gas. The vehicle is being configured in three arrangements: a commercial/taxi version, a paratransit van, and as a family car. Its body is made of plastic composites which will not rust and its fenders are made from an energy absorbing foam which resumes its original shape after being dented.

  8. The Bionic Telescope

    Science.gov (United States)

    Woolf, Neville

    2009-05-01

    Four hundred years after children in a spectacle makers workshop accidentally discovered the telescope, the development of this device has been a continuous replacement of the ``natural'' by the deliberate. The human eye is gone. The lens is gone. The tube is gone. The dome is on the verge of going. The size of the optics are ceasing to be set by transportation limits. Adaptive optics are preferred to stable optics. We deliberately break the Lagrange invariant. We focus on lasers instead of stars, and natural observing environments are being replaced by adaptive environments. The goals for the new ground based telescope encompass the oldest and newest ideas, to find signs of life elsewhere, and to find how all the universe developed.

  9. The Bionic Library.

    Science.gov (United States)

    Billings, Harold

    1991-01-01

    Discussion of the information crisis focuses on possible new forms of library collections. Topics discussed include the rising quantity and costs of publications; improvements in access through new technologies; vendors' plans using electronic text; information flow; economics factors, including user fees; and the role of the commercial sector.…

  10. The Bionic Amoeba.

    Science.gov (United States)

    Wright, Emmett L.

    1979-01-01

    A demonstration is described that encourages students to engage in inquiry in biology. Using chemicals and an overhead projector, the instructor can simulate a living organism projected onto a screen. The reaction can aid students in defining the characteristics of life. (SA)

  11. Bionic Lightweight Design

    OpenAIRE

    Maier, Moritz; Hollermann, Markus

    2016-01-01

    Nature has come to a range of advanced lightweight principles due to evolution. These principles can serve as models for innovative concepts of technical constructions. A corresponding expansion of the established procedure of lightweight designs to principles of nature leads to a variety of innovative lightweight construction concepts, expanding the potential for highly effective constructions.

  12. Study on the Prevention and Control Technology of Bionic Glue for Wolfberry Jaapiella sp.%仿生胶对枸杞红瘿蚊的防控技术研究

    Institute of Scientific and Technical Information of China (English)

    张铁梅; 孙海霞; 何嘉

    2013-01-01

    This research grasps the critical prevention period of wolfberry Jaapiella sp., uses the new technology-bionic glue to develop prevention experiment for wolfberry Jaapiella sp.in park closure period and leaf expansion period of wolfberry, defines various technical prevention methods of bionic glue for wolfberry Jaapiella sp., reduces the use of chemicals and protects the quality and safety of wolfberry products.%本项研究掌握住了枸杞红瘿蚊的防治关键期,采用了仿生胶这一新型技术,在封园期和枸杞展叶期开展对枸杞红瘿蚊的防治试验,明确仿生胶防控枸杞红瘿蚊的各项技术方法,减少化学药剂的使用,保障枸杞产品质量安全。

  13. Study on Bionic Wild Cultivation Technique of Gentiana Straminea in the Qinghai-Tibet Plateau%青藏高原麻花艽仿生栽培技术研究

    Institute of Scientific and Technical Information of China (English)

    田丰; 李永平; 俞科贤; 李福安; 魏全嘉; 王有庆; 王祖训

    2012-01-01

    采用对比设计对麻花艽仿生栽培方式和常规栽培进行试验.结果表明:在青海麻花艽适生地区采用仿生栽培方式种植麻花艽更接近麻花艽的野生环境.麻花艽的出苗期、第二年返青期均早于常规栽培方式;出苗密度、返青率、单株叶片数、叶长、单株鲜重、根鲜重等均显著高于常规栽培方式;龙胆苦苷含量与常规栽培没有显著差异.仿生栽培方式的人力、物力的投入量少于常规栽培.%Comparative experiment was carried out between bionic wild and conventional cultivation of Gentiana straminea in Qinghai-Tibet plateau. The results indicated that the growth situation of Gentiana straminea planted with bionic wild cultivation was almost same with plant grown in wild environment condition in Qinghai potential growth area. Emergence period and recovering date of Gentiana straminea in following year were earlier than plants planted with conventional cultivation;seedling density, recovering rate,the number of leaves, length of leaf,fresh weight per plant and fresh weight per plant root were obviously higher than plants planted with conventional cultivation; There was no significant difference on gentiopicroside content between bionic wild and conventional cultivation. The cost of manpower and materials on bionic cultivation were less than conventional cultivation.

  14. Macrophages promote benzopyrene-induced tumor transformation of human bronchial epithelial cells by activation of NF-κB and STAT3 signaling in a bionic airway chip culture and in animal models

    Science.gov (United States)

    Sun, Zhao; Wang, Lei; Guo, Zhe; Zhao, Yang; Gao, Zhancheng; Wang, Qi

    2015-01-01

    We investigated the role of macrophages in promoting benzopyrene (BaP)-induced malignant transformation of human bronchial epithelial cells using a BaP-induced tumor transformation model with a bionic airway chip in vitro and in animal models. The bionic airway chip culture data showed that macrophages promoted BaP-induced malignant transformation of human bronchial epithelial cells, which was mediated by nuclear factor (NF)-κB and STAT3 pathways to induce cell proliferation, colony formation in chip culture, and tumorigenicity in nude mice. Blockage of interleukin (IL)-6 or tumor necrosis factor (TNF)-α signaling or inhibition of NF-κB, STAT3, or cyclinD1 expression abrogated the effect of macrophages on malignant transformation in the bionic airway chip culture. In vivo, macrophages promoted lung tumorigenesis in a carcinogen-induced animal model. Similarly, blockage of NF-κB, STAT3, or cyclinD1 using siRNA transfection decreased the carcinogen-induced tumorigenesis in rats. We demonstrated that macrophages are critical in promoting lung tumorigenesis and that the macrophage-initiated TNF-α/NF-κB/cyclinD1 and IL-6/STAT3/cyclinD1 pathways are primarily responsible for promoting lung tumorigenesis. PMID:25823926

  15. Design and Preparation of Bionic Camouflage Materials by Simulating Plant Leaves%植物叶片仿生伪装材料的设计与制备

    Institute of Scientific and Technical Information of China (English)

    杨玉杰; 胡碧茹; 吴文健

    2011-01-01

    设计和制备了一种新型的植物叶片仿生伪装材料,其由透明聚氯乙烯表层、叶绿素/聚乙烯醇薄膜、含水高阻隔袋和纸张四层组成.其中,透明聚氯乙烯表层提供防水性能,叶绿素封装于高隔氧材料聚乙烯醇中提高了其光稳定性,水封装于高隔水材料中降低了其蒸发散失速度,纸张提供了类植物叶片的疏松多孔结构.光谱测试结果表明,该仿生伪装材料在可见光、近红外和短波红外波段的反射光谱特征与植物叶片一致,相似度可达0.9983,室外日光照射三个月后仍能保持与植物叶片一致的反射光谱特征.该伪装材料与植物叶片光谱相似度高,耐候性好,有望可以有效对抗高光谱侦察.%A novel bionic camouflage material, which is constituted of transparent poly ( vinyl chloride) surface, chlorophyll/poly (vinyl alcohol) film, high-vapor-barrier water bag and paper, was designed and prepared by simulating plant leaves. The transparent poly (vinyl chloride) surface was used to provide waterproof capability of the camouflage material; the chlorophyll was concealed into the high-oxygen-barrier poly( vinyl alcohol) film to improve its photostability; the water was sealed into the bag of high-vapor-barrier poly( vinylidene chloride) to prevent its vaporization loss; and the paper was used to simulate the spongy mesophyll of plant leaf organs. The result of spectral tests showed that the reflectance spectra of camouflage material and plant leaves, whose similarity was 0. 9983, exhibited the same characteristics in visible, near infrared and short wave infrared wave bands, and the spectral characteristics of camouflage material did not change after three months' sunlight treatment. The bionic camouflage material, which displayed a high spectral similarity with plant leaves and a good weather resistance, is an effective method to take on reconnaissance of hyperspectral imaging hopefully.

  16. 基于狗獾爪趾的仿生深松铲结构设计与试验%Structure Design and Test of the Badger Claws Bionic Subsoiler

    Institute of Scientific and Technical Information of China (English)

    白景峰; 李博; 吕秀婷; 陈军; 党革荣; 史江涛

    2016-01-01

    针对现有深松铲存在的耕作阻力较大及能耗较高等问题,利用仿生学原理将狗獾爪趾的曲线应用到深松铲的结构设计中,设计了一种铲柄刃口为多项式曲线、铲尖为圆弧形的新型深松铲。为研究其耕作效果,将所设计的深松铲与国标深松铲进行了室内土槽对比试验。试验结果表明:在相同的深松试验条件下,仿生深松铲比国标深松铲的耕作阻力减小了13.33%~21.72%,仿生深松铲减阻效果明显;仿生铲柄与国标铲尖组合比国标深松铲耕作阻力减小了3.01%~7.61%,仿生铲尖与国标铲柄的组合比国标深松铲耕作阻力减小了7.67%~16.97%,仿生铲尖的减阻效果显著于仿生铲柄的减阻效果。%The problem of greater cultivation resistance , higher energy consumption and other issue exists in the tradi-tional subsoiler .In this paper , the curve of the badge claws is applied in the structural design of subsoiler according to the principle of bionics , it has designed a new subsoiler which contains the share shaft of polynomial curve and the sweep point of circular arc .In order to study the cultivation effect , we do the contrast experiment to bionic subsoiler and tra-ditional subsoiler in soil-bin laboratory.The result showed that the bionic subsoiler's tillage resistance decreased by 13 .33% ~21 .72%and the drag reduction effect was obvious in comparison to traditional subsoiler under the same test conditions .If the bionic share shaft combined with the traditional sweep point , the tillage resistance will be reduced by 3 .01%~7 .61% compared to the traditional subsoiler .While the combination of the bionic sweep point and the tra-ditional share shaft decreased by 7 .67%~16 .97% than the traditional subsoiler in the tillage resistance.Thus the difference of the drag reduction effect of the bionic sweep point and the bionic share shaft was significant .

  17. Bionic cutter of cutter suction dredger with ant colony optimization%绞吸式挖泥船仿生绞刀刀齿的蚁群优化

    Institute of Scientific and Technical Information of China (English)

    穆乃超; 许焕敏; 邬同舟

    2014-01-01

    为了提高绞吸式挖泥船仿生绞刀减粘降阻的效果,获得更高的生产效率和经济效益,应用蚁群算法对仿生绞刀的凸包的几何尺寸及其分布进行优化,得到对于不同类型的土壤和在一定的压力范围内所需的凸包形仿生绞刀的结构尺寸。%In order to reduce the adhesion and friction of soil, the effect of the adhesion and resistance, and gain higher productivity and economic efficiency. The application of ant colony algorithm for bionic cutter geometry and distribution of the convex hull is optimized to obtain the desired convex hull-shaped cutter biomimetic structure within different types of soil and a certain pressure range.

  18. 仿生非光滑水田犁壁的设计及田间应用试验%Design and Applying Experiments of the Bionic Non-smooth Plow Moldboard for Paddy Field

    Institute of Scientific and Technical Information of China (English)

    金俊; 李建桥; 张广权; 李英日; 朴明哲; 黄晗

    2015-01-01

    水田犁田间作业时土壤对犁壁的严重粘附,将导致犁耕阻力增加、油耗增大、耕作质量和生产效率降低。经过大量的试验研究,已发现典型土壤动物蜣螂体表的减粘降阻和脱附效应,并据此开发了仿生犁壁。在前期研究基础上,考察仿生非光滑水田犁壁面上几何非光滑结构单元的尺寸和分布对犁耕阻力的影响,进行了设计参数优化,研制出具有减粘降阻性能的仿生非光滑水田犁壁。田间对比测试表明:仿生非光滑水田犁壁与普通光滑水田犁壁相比,降低犁耕阻力15.9%~18.0%,减少油耗11.9%,提高生产率20.5%。该犁壁耕翻的碎垡率高,耕作质量良好,有较好的实际应用前景。%Soil adhesion which exists between soil and plow moldboard in the field work of paddy field plough , not only increases the working resistance and energy consumption of these machines , but also decreases the quality of work and the productivity .It was found that the non-smooth surfaces of the typical soil animal-dung beetle had the characteristics of anti-adhesion , anti-resistance and desorption by lots of tests and observations .Based on these researchers , bionic non-smooth plow moldboards were developed .In this paper , we analyzed the plowing resistance impact of dimention and distribution of bionic non-smooth structural units , then optimized parameters ( dimention and distribution ) , developed bionic non-smooth paddy field plow moldboard that had better properties of anti-adhesion and anti-resistance .The plo-wing resistances , oil consumption and plowing productivity of bionic plow and common plow were tested in paddy field . The results showed that, compared with common smooth plough, the bionic plow moldboard could reduce plowing resistance to 15.9%~18.0%, could save the fuel consumption to 11.9%, and could raise the plowing productivity to 20 .5%.Meanwhile , the bionic non-smooth plow

  19. 仿鳐鱼水下机器人自主游动建模与仿真%Modeling and simulation of underwater self-propulsive bionic batoid fish robot

    Institute of Scientific and Technical Information of China (English)

    陈维山; 周杨

    2012-01-01

    随着探索海洋的呼声越来越高,仿鱼机器人的研究热潮也随之而来.在众多鱼类中,以鳐鱼为代表的胸鳍推进式鱼类具有良好的机动性,能适应复杂的海底环境.然而目前国内外对仿鳐鱼机器人的研究很少,特别是对其动力学模型和自主游动方面的研究更是不足,因而建立了仿鳐鱼机器人的物理模型,提出了一种动力学模型,并在此基础上仿真实现了仿鳐鱼机器人的自主游动,获得了与真实鳐鱼游动十分接近的速度和相同的运动规律,证明了模型和仿真的正确性.%With the requirement for the exploration of the sea increasing, the research of bionic robotic is becoming more upsurge. Taking batoid as representative of undulating pectoral fins fish which are characterized by maneuverability can adapt to the complicated benthal environment.However,fewer researches have been made to the bionic batoid fish robot,especially its dynamic modeling and self梡ropulsion in domestic.Thus establishes a physical and dynamic model of bionic batoid fish robot and the self-propulsive swimming is realized while the velocity and motion regulation approaches to the real batoid is achieved as well,which proves our modeling and simulation to be correct.

  20. Natural Bionic Design Based on Expressions of Essence, Energy and Spirit Culture in the Military Camps%基于营区精、气、神文化表达的自然仿生设计

    Institute of Scientific and Technical Information of China (English)

    郑涛; 刘宁波; 黄帅; 陈暲

    2014-01-01

    精、气、神文化是营区规划设计的核心。自然仿生设计为营区精、气、神文化的表达提供了独特而有效的方式。通过对营区精、气、神文化的解读,发掘出自然仿生的3个层面,即“形”之仿生,“意”之仿生和“结构”之仿生。在营区规划设计中,当自然仿生的这3个层面得到有效表达,实现有机统一,营区就会产生独特的文化气质与魅力,从而体现其精、气、神特色,展现部队的“军营魂”。%The essence, energy and spirit are the essence of the planning and designs of military camps. Natural bionic de⁃signs provide a unique and effective way for the expressions of the essence, energy and spirit culture in military camps. By means of interpretation of essence, energy and spirit culture in military camps, three ideas of the natural bionics is found, which are the ap⁃pearances, connotations and constructions. In the planning design of military camps, when these ideas of the natural bionics are ex⁃pressed effectively and united organically, the military camps will have the unique cultural qualities and charms. In this way, the es⁃sence, energy and spirit culture of the military camps are reflected and the soul of the army is manifested.

  1. Semi-bionic Extraction of Total Flavonoids from RADIX WlKSTROEMAE%半仿生法提取了哥王总黄酮的工艺研究

    Institute of Scientific and Technical Information of China (English)

    赖红芳; 吴志鸿; 邓晰朝

    2011-01-01

    [目的]研究半仿生法提取了哥王中总黄酮的最佳工艺.[方法]采用正交试验法,考察提取温度(A)、提取时间(B)、料液比(C)、乙醇体积分数(D)4个因素对提取总黄酮得率的影响.[结果]丰仿生法提取优化工艺条件是浓度70%乙醇、料液比1∶14(g:ml)、回流提取温度80℃、提取时间为70∶ 35∶35(min)提取3次.此条件下总黄酮得率为4.73%.[结论]半仿生提取法适合提取了哥王中的总黄酮.%[Objective] To study the best semi-bionic extraction technology of total flavonoids from RADIX WIKSTROEMAE. [ Method] Orthogonal experiment was carried out to investigate the effects of extraction temperature ( A) , extraction time ( B) , solid-liquid ratio ( C) , and ethanol concentration (D) on the extracting yield of total flavonoids. [Result] Hie optimal conditions for semi-bionic extraction were; 70% alcohol, l:14(g:ml) of solid-liquid ratio, and extracting at 80 ℃ for 70:35:35 min for three times, the extracting yield of flavonoids under these conditions was 4.73%. [Conclusion] Semi-bionic extraction was applicable to extracting total flavonoids from RADIX WIKSTROEMAE.

  2. 基于鸟翼后缘的仿生翼型的阻力数值模拟%Aerodynamic Performance of Bionic Foils based on Trailing Edge of Pigeon

    Institute of Scientific and Technical Information of China (English)

    陈衡; 林晓华; 成卓; 王庆五

    2011-01-01

    基于对流体介质中典型动物信鸽减阻功能的研究,揭示了其低阻力翼羽独有的序贯排列方式;量化了信鸽翅膀翼羽后缘形态特征几何信息,并建立仿生模型,其展向后缘形态可以用波长与振幅(波峰、波谷)来限定。对仿生翼型模型的气动特性进行了数值模拟。结果表明,仿生翼型结构能够改善翼型的气动性能,阻力减幅高达9.1%。%The features of drag reduction of the representative pigeon in fluid medium were studied. It was found that the flight capability of the pigeon mainly depends upon the distinct sequential array of its high lift wing feathers. Quantify the geometric information about the leading edge shape of the pigeon wing, bionic models were built in which the trailing edge shape was defined by wavelength and wavecrest to wavetrough amplitude. The finite volume method and the pressure corrected SIMPLEC algorithm were used to simulate numerically the aerodynamic performance of the bionic airfoil model. The results show that at the condition of deep stall, the bionic airfoil model can improve significantly the aeroperformance, reduce aerodynamic drag by 9.1%.

  3. Dynamics Simulation and Bionic Control Platform for Biped Robot with Matlab%基于Matlab的双足机器人动力学仿真及仿生控制平台

    Institute of Scientific and Technical Information of China (English)

    王健美; 付成龙; 黄元林; 陈恳

    2011-01-01

    针对仿生控制的特点,构建了一种Matlab环境下的双足机器人动力学仿真及仿生控制平台。为了充分利用关节自身的被动特性,描述了由非外界约束引起的自由度变化,以及双足机器人在运动相态间的合理切换。同时,考虑到碰撞是机器人运动的固有特性,建立了包括碰撞在内的混合动力学模型,最终实现控制器与机器人、环境的耦合。在此平台上,对设计的仿生控制算法进行了仿真:借助机器人自身运动状态和环境交互信息,协调各个关节的动作时序,实现了低能耗的稳定行走。结果表明,该平台为双足机器人仿生控制及其运动特性分析提供了有效的仿真手段。%Aiming at bionic control,a dynamics simulation and bionic control platform for biped robot was established based on Matlab.To utilize passive locomotive characteristics of joints,the variation of degrees of freedom caused by non-environmental constraints,and the consequent transformations between different motion phases were studied.Considering impact as inevitable character of robot locomotion,the hybrid dynamics model including impact was established,and the entrainment between controller,robot,and environment were finally realized.A bionic control method was proposed and tested on this platform.Depending on states of robot and environment information,the locomotion of each joint was coordinated,and the robot could walk stably with low energy consumption.The simulation result shows this platform provides an effective simulation means for bionic control and its motion characteristics analysis.

  4. 基于仿生学原理的匀矿机设计及应用%Design and Application of Uniform Mining Machine based on Bionics Principle

    Institute of Scientific and Technical Information of China (English)

    刘和生; 厉汝文; 胡书文

    2014-01-01

    我国钨矿山企业大多数仍然保留了手选工序,为提高效率需要在手选皮带传送过程中进行匀矿。现有的匀矿方法是人工操作扒齿将矿石左右扒开,存在劳动强度较大、用工多、均匀性差等问题。针对匀矿具有动作简单、重复性大的机械特点,运用仿生学原理,采集了现场操作人员的主要工作参数,采用一个曲柄滑块机构模仿扒齿的扒矿的往复运行动作,设计了一款手选匀矿机。该设备工艺简单、安装维修方便、加工制造及运行成本低、噪音小、能耗低、匀矿效果好。%Hand-picking process in the tungsten mine has problems of labor intensity and poor picking uniformity. Bionics principles are applied to design a uniform mining machine adopting a crank slider mechanism. The major working parameters of operators are collected by imitating the repetition actions. The machine has the advantages of simple operation and maintenance, low production and performance costs, low noise and energy consumption and favorable sorting results.

  5. Bionics: prcise color tuning by interference in nature and technology-applications in surface-micromachined 1.55μm vertical air-cavity filters

    Science.gov (United States)

    Hillmer, Hartmut; Daleiden, Juergen; Prott, Cornelia; Irmer, Soeren; Roemer, Friedhard; Ataro, Edwin; Tarraf, Amer; Ruehling, H.; Maniak, Markus; Strassner, Martin

    2003-01-01

    Bionics transfers the principles of success of nature into natural science, engineering disciplines and applications. Often generation and detection of different spectral colors play key roles in communication in both, nature and technology. The latter one refers e.g. to dense wavelength division multiplex optical communication systems. This paper shows interesting parallels in tunable spectral light filtering by butterfly wings and by tunable optical filters used in optical communication systems. In both cases light interferes constructively and destructively with nano- and microstructures of appropriate shape, dimensions and materials. In this paper methodology is strongly emphasized. We demonstrate that tailored scaling allows the effectiveness of physical effects to be enhanced in nature and technology. These principles are rigorously applied in micromachined 1.55μm vertical-resonator-based filters, capable of wide, continuous, monotonic and kink-free tuning by a single control parameter. Tuning is achieved by mechanically actuating one or several membranes embedded by air-gaps in a vertical resonator including two ultra-highly reflective DBR mirrors. The layers of mirrors reveal a very strong refractive index contrast. Filters including InP/air-gap DBR's (3.5 periods) using GaInAs sacrificial layers reveal a continuous tuning of >9% of the absolute wavelength. Varying a reverse voltage (U=0 .. -3.2V) between the membranes, a tuning range up to 142nm was obtained due to electrostatic actuation. Appropriate miniaturization is shown to increase the mechanical stability and the effectiveness of spectral tuning by electrostatic actuation since the relative significance of the fundamental physical forces can be shifted considerably by appropriate scaling.

  6. Research Advances in the Key Technology of Bionic Configuration Design of Agricultural Machinery%农机产品仿生配置设计的关键技术研究进展

    Institute of Scientific and Technical Information of China (English)

    屠立; 裘乐淼

    2012-01-01

    The aim of the configuration design of agricultural machinery was to improve the products design efficiency. The research status a-bout the configuration design technologies both at home and abroad was introduced, and the configuration model and case-based reuse technique of agricultural machineries were summarized, finally its existing problems and future research direction were pointed out. It was concluded that the bionic configuration technology has become a main research direction of machinery design methods, and the technical research framework of the bionic configuration design was presented.%农机产品配置设计的目的是为了提高产品设计效率.介绍了国内外学者对配置设计技术的研究现状,对提出的农机产品配置建模与实例重用技术进行了总结,并指出了现存问题和下一步研究方向.认为仿生配置设计技术已成为目前国内外机具产品设计方法研究的主要趋向,并给出了农机产品的仿生配置设计技术研究框架.

  7. Application of Bionics Design Method in Product Modeling Design%形态仿生设计方法在产品造型设计中的应用∗

    Institute of Scientific and Technical Information of China (English)

    金薇; 王卫星

    2015-01-01

    In the product modeling design, domestic designers relatively lack the understanding and flexibility. They neglect to explore the design of human⁃related factors. The application of bionics design method in product modeling design makes the de⁃sign trace back to nature, gives the form the life symbol, and allows people to be closer to products and become compatible with them. Bionics design method contains the vitality of life and ultimately enhances the charm of the product.%在产品造型设计方面,国内设计师的认知较为局限,设计灵活性较差,忽略了设计中很多与人相关因素的探讨。形态仿生设计方法在产品造型中的应用则使得设计回归自然,赋予产品形态生命的象征,使产品与人的距离更短,相互之间的契合度更高,让设计产品有更强的生命力,最终提升产品的魅力。

  8. Cancer-associated fibroblasts promote non-small cell lung cancer cell invasion by upregulation of glucose-regulated protein 78 (GRP78) expression in an integrated bionic microfluidic device.

    Science.gov (United States)

    Yu, Ting; Guo, Zhe; Fan, Hui; Song, Jing; Liu, Yuanbin; Gao, Zhancheng; Wang, Qi

    2016-05-01

    The tumor microenvironment is comprised of cancer cells and various stromal cells and their respective cellular components. Cancer-associated fibroblasts (CAFs), a major part of the stromal cells, are a key determinant in tumor progression, while glucose-regulated protein (GRP)78 is overexpressed in many human cancers and is involved in tumor invasion and metastasis. This study developed a microfluidic-based three dimension (3D) co-culture device to mimic an in vitro tumor microenvironment in order to investigate tumor cell invasion in real-time. This bionic chip provided significant information regarding the role of GRP78, which may be stimulated by CAFs, to promote non-small cell lung cancer cell invasion in vitro. The data showed that CAF induced migration of NSCLC A549 and SPCA-1 cells in this three-dimensional invasion microdevice, which is confirmed by using the traditional Transwell system. Furthermore, CAF induced GRP78 expression in A549 and SPCA-1 cells to facilitate NSCLC cell migration and invasion, whereas knockdown of GRP78 expression blocked A549 and SPCA-1 cell migration and invasion capacity. In conclusion, these data indicated that CAFs might promote NSCLC cell invasion by up-regulation of GRP78 expression and this bionic chip microdevice is a robust platform to assess the interaction of cancer and stromal cells in tumor environment study. PMID:27016417

  9. 仿生绒囊钻井液煤层气钻井应用现状与发展前景%Application state and prospects of bionic fuzzy-ball drilling fluids for coalbed methane drilling

    Institute of Scientific and Technical Information of China (English)

    郑力会

    2011-01-01

    The bionic fuzzy-ball drilling fluid was developed by imitating bacteria structure. Bionic Fuzzy-ball drilling fluid for underbalance drilling in well CLY-A shows the density of the fluid can range from 0.8 g/cm3 to 1.0 g/cm3 and it can be circulated without extra equipments. Compressed air drilling in well CLY-B proves that the different bionic fuzzy-ball additives varying drilling phases such as air, mist, foam and fuzzy-ball drilling fluid can be converted smoothly. Bionic fuzzy-ball drilling fluids for controlling and killing circulation loss in well DFS-C indicates it can control the leakage in forms of pressure reduced, pressure lost and pressure supported. The multi-branch drilling process in well FL-D shows both the cases of high viscosity with low shear rate and the low viscosity with high shear rate have good performance in cleaning wellbore and enhancing ROP. In well J-E, different formation pressure coefficients exist in the same open hole. The successful drilling proves it can improve the formation pressure bearing resistance in low-pressure section and help safe drilling in formations with narrow dynamic safe density window. Further study of bionic fuzzy-ball drilling fluid should focus on its microstructure, system type and circulation density, to satisfy more specific needs in drilling process.%仿照细菌结构开发了含仿生绒囊的钻井液.CLY-A井欠平衡钻井表明,无需附加设备,调整钻井液密度0.8~1.0 g/cm3即可循环;CLY-B井空气钻井表明,空气钻井过程中添加不同绒囊处理剂,可实现空气、雾、泡沫和绒囊不停钻转换钻井工作流体;DFS-C井防漏堵漏钻井表明,分压、耗压、撑压方式可控制钻井液漏失速度;FL-D分支井钻井表明,该钻井液具有低剪切速率下高黏度和高剪切速率下低黏度的特性,能够提高井眼清洁效率和机械钻速;J-E井不同压力系统共存于同一裸眼的井下复杂处理表明,该钻井液可以提高低压

  10. 基于贝壳表面形态的内燃机活塞仿生设计%Bionic design for internal engine piston based on shell surface form

    Institute of Scientific and Technical Information of China (English)

    吴波; 丛茜; 孙天宇; 刘鸿涛; 田为军

    2016-01-01

    Considering the huge numbers of internal combustion engines in use worldwide, even a small reduction in the friction of the piston⁃cylinder sleeve system would greatly impact energy conservation and emission reduction. In this paper, we use the LX⁃2V engine as a test matrix. First, we applied drag reduction and a wear⁃resistant stripe pattern on a shell's surface to the main friction pair of the internal combustion engine⁃piston skirt. We then constructed a three⁃level and three⁃factor orthogonal test plan. Under the worst skirt conditions, we analyzed the fi⁃nite element contact for the standard piston and nine bionic piston models, and obtained and compared the three most typical test indexes. We then used a range analysis method to test and optimize the design. Lastly, we selected a standard piston, a bionic piston with optimum performance, and a piston with an optimum combination on which to carry out a durability bench test of the internal combustion engine. Results show that the bionic piston performs better than the standard piston regarding the unloading of concentrated stress of the piston’ s oil return hole, drag reduction, and abrasion resistance. The average abrasion loss of the bionic piston was 42.9% less than that of the standard piston. In addition, the average cylinder pressure changing rate of the bionic piston was 50.2%more stable than that of the standard piston.%内燃机活塞-缸套系统摩擦减小对节能减排产生巨大影响。以LX-2V型汽车内燃机为试验母体。将贝壳表面的减阻、耐磨条纹形态应用于内燃机中的主要摩擦副—活塞裙部上。制定三水平三因素正交实验方案。在裙部最恶劣工况下,对标准活塞和9个仿生活塞模型进行有限元接触分析,得出三个最典型试验指标,并将其对比研究。采用极差分析法进行试验优化设计。最后,选取标准活塞、最优性能仿生活塞、最优组合活塞,进行内燃机

  11. Study on the drag reduction of the high-speed train based on the bionic non-s mooth riblets%基于仿生非光滑沟槽的高速列车减阻研究

    Institute of Scientific and Technical Information of China (English)

    杜健; 龚明; 田爱琴; 高娜; 李志伟

    2014-01-01

    In order to reduce the aerodynamic drag of the high-speed train,the geometry configuration of the bionic non-smooth riblets as an idealized model of shark skin was set up based on the bionic non-smooth theo-ry.And by means of the computational model verified with the wind tunnel test data,study on drag reduction of the bionic non-smooth riblets was carried out.The computational results show that the existence of the bionic non-smooth riblets impedes the generation of the instantaneous lateral flow caused by the turbulence,and re-duces the friction drag between the turbulence and the wall.The frictional drag coefficient in the top domain of the riblets is close to that of the smooth wall,while the frictional drag coefficient in the rest domain of the riblets is smaller than that of the smooth wall.For the different flow velocities(60 m/s~160 m/s),the drag coefficient of the non-smooth riblets wall is smaller than that of the smooth wall.Moreover,the drag reduction rate can de-crease by more than 6% for the bionic non-smooth riblets.%为减小高速列车气动阻力,根据仿生非光滑理论,以鲨鱼体表为仿生对象,建立仿生非光滑沟槽的几何外形,采用经风洞试验验证的数值模拟方法,开展仿生非光滑沟槽的减阻效果研究。计算结果表明:仿生非光滑沟槽的存在可以阻碍由湍流运动引起的瞬时横向流动的发生,降低湍流与壁面之间的摩擦阻力;沟槽顶端区域的摩擦阻力系数接近于光滑壁面的摩擦阻力系数,而其余大部分区域内的摩擦阻力系数则小于光滑壁面的摩擦阻力系数;在不同的气流速度(60~160 m/s)下,沟槽壁面的阻力系数均小于光滑壁面的阻力系数,仿生非光滑沟槽的减阻率可达6%以上。

  12. 对比度熵流仿生导航算法研究%Bionic navigation aIgorithm of contrast entropy fIow

    Institute of Scientific and Technical Information of China (English)

    王丽佳; 黄于峰; 刘建国

    2015-01-01

    飞行昆虫能够在复杂的自然环境中实现精确的导航,因此研究并借鉴飞行昆虫的导航机理,有助于开发更为高效的导航系统。飞行昆虫(以蜜蜂为代表)的视觉导航实验表明,飞行昆虫是基于图像信息流实现导航的。图像熵可以表征图像信息,为了更好地表征图像的纹理特征及空间分布,提出了对比度熵图的概念及其构造方法。借鉴光流算法及其应用于运动参数估计的思路,再结合卡尔曼滤波对结果进行优化,可得到对比度熵流仿生导航算法。实验表明,对比度熵图的导航算法比灰度熵图的导航算法有更好的导航性能。%With the facts that flying insects can achieve precise and high-speed navigation in complex natural environments,many experiments that focus on the navigation mechanism of flying insects have explored the possibilities for a more efficient,accurate and robust navigation strategy.In latest research results,it is revealed that honeybees navigate by images flowed through retinas. Concepts of entropy image and entropy flow are introduced to characterize topographic features and measure changes of the image respectively.A novel bionic visual navigation framework is proposed,integrating entropy flow with Kalman filter.To improve performance of intensity entropy image for characterizing texture feature and spatial distribution of an image,a functional concept of contrast entropy image is presented,which is applied to the proposed navigation algorithm.Comparing with simulation results of the normal intensity entropy image,a significant conclusion that contrast entropy image performs better and more robust in navigation has been made.

  13. Design and Preparation of Plant Bionic Materials Based on Optical and Inf rared Features Simulation%基于光学和红外特征模拟的植物仿生材料设计制备

    Institute of Scientific and Technical Information of China (English)

    蒋晓军; 吕绪良; 潘家亮; 张拴勤

    2015-01-01

    regulate temperature on their own initiative ,which make the infrared characteristics of plants different from artificial materials . So palnt bionic materials were proposed to simulate optical and infrared characteristics of plants .By analyzing formation mecha‐nism of optical and infrared features about green plants ,the component design and heat‐transfer process of plants bionic materials were studied ,above these the heat‐transfer control formulation was established .Based on water adsorption/release compound , optical pigments and other man‐made materials ,plant bionic materials preparation methods were designed which could simulate the optical and infrared features of green plants .By chemical casting methods plant bionic material films were prepared ,which use polyvinyl alcohol as film forming and water adsorption/release compound ,and use optical pigments like chrome green and macromolecule yellow as colouring materials .The research conclusions achieved by testings figured out :water adsorption/re‐lease testing showed that the plant bionic materials with a certain thickness could absorb 1.3 kg water per square meter ,which could satisfy the water usage of transpiration simulation one day ;the optical and infrared simulated effect tests indicated that the plant bionic materials could preferably simulate the spectral reflective performance of green plants in optical wave band (380~2 500 nm ,expecially in 1 400 and 1 900 nm which were water absorption wave band of plants ) ,and also it had similar daily in‐frared radiation variations with green plants ,daily average radiation temperature difference was 0.37 ℃ ,maximum radiation temperature difference was 0.9 ℃ ;so according to the testing results ,the materials behave well plant bionic performance .

  14. 具有仿生条纹结构的内燃机活塞疲劳特性回归分析%Regression analysis of fatigue property of internal combustion engine piston with bionic stripe structure

    Institute of Scientific and Technical Information of China (English)

    吴波; 丛茜; 杨利; 刘洋; 金绍江; 王洪臣; 刘鸿涛; 田为军

    2016-01-01

    were got. Then we could observe the stress, strain and deformation of piston from coupled thermo-mechanical analysis results. Second, most animals have evolved and formed non-smooth surface, which can reduce drag and resist wear. The soil animal earthworm is one of the perfect animals, which has non-smooth surface. It shuttles back and forth in the soil, which was just like piston doing reciprocating motion in air cylinder. We copied stripes and holes from earthworm and enlarged them. The enlarging scale was decided according to piston size. Then the stripes and holes on the piston skirt were processed. The bionic piston could resist attrition and heat dissipation, and increase fatigue life. The coupled thermo-mechanical analysis results of standard piston showed that the stress of perfective aspect of piston was non-uniform. The stress was concentrated on the piston top and the third ring groove, and the maximum deformation was at the bottom of piston skirt. So this design made depth, width and space of stripe variable size. For the stripe, the closer to the top of piston, the larger the depth, width and space between columns. There were 8 stripes on the skirt from top to bottom, and every adjacent 2 stripes had the same size (1 and 2, 3 and 4, 5 and 6, 7 and 8). Third, the three-level and three-factor orthogonal array was used, and 9 testing programs of bionic pistons were made. The first factor was stripe distribution pattern, and it included 3 levels which were stripe distribution, drilling in stripe and a line of stripe with a line of bore. The second factor was stripe depth, and it included 3 levels which were A (0.8, 0.7, 0.6 and 0.5 mm), B (0.9, 0.8, 0.7 and 0.6 mm) and C (1, 0.9, 0.8 and 0.7 mm). The third factor was stripe width, and it included 3 levels which were I (0.8, 0.7, 0.6 and 0.5 mm), II (0.9, 0.8, 0.7 and 0.6 mm) and III (1, 0.9, 0.8 and 0.7 mm). The coupled thermo-mechanical analysis was carried out on 9 bionic pistons. Three typical indices that

  15. 一种混合驱动柔索并联仿生眼的轨迹规划%Trajectory Planning of a Bionic Eye Using Hybrid-Driven Cable Parallel Mechanism

    Institute of Scientific and Technical Information of China (English)

    谢少荣; 刘思淼; 罗均; 黄潮炯; 杨毅; 李恒宇

    2015-01-01

    在与眼球运动相关的解剖学和运动学的基础上,设计了一种符合Listing定理的基于混合驱动柔索并联机构的3自由度机器人仿生眼。通过矢量封闭方法建立了逆运动学模型,求解出柔索并联机器人的雅可比矩阵和结构矩阵。利用达朗贝尔定理建立柔索并联机器人的力矩平衡方程组,采用广义逆矩阵的相关理论,以柔索张力矢量的2范数最小为目标进行张力优化。用蒙特卡洛方法计算出仿生眼球可达工作空间。最后,在Simulink环境下进行仿真,规划运动轨迹并得到柔索并联机器人运动特性的仿真结果,证明了本文设计的机构符合Listing定理。结果表明:基于混合驱动柔索并联机构的机器人仿生眼结构合理,数学模型正确。%Based on anatomy and kinematics of human’s eyeball, a 3-DOF (degree of freedom) bionic eye with hybrid-driven cable parallel mechanism (CPM) is presented according to Listing’s law. An inverse kinematics model is built with the vector closure method, and Jacobian matrices and structure matrices of CPMs are solved. Force moment equilibrium equations of CPMs are established based on Darren Bell’s theorem. With the aim of minimizing the 2-norm of cable tension vectors, tension distribution is optimized according to generalized inverse matrix theories. The reachable work space of the bionic eye is calculated with Monte-Carlo method. Finally, the trajectories of CPMs are planned in Simulink environment, the corresponding kinematic performance results are obtained, and the designed mechanism is proven to be in accordance with Listing’s law. The result shows that the bionic eye using hybrid-driven CPM is reasonable, and the derived mathematical models are correct.

  16. V 形仿生非光滑结构对轮胎花纹气动噪声影响%Effect of bionic V-riblet non-smooth structure on aerodynamic noise of tire tread pattern

    Institute of Scientific and Technical Information of China (English)

    周海超; 杨建; 梁晨; 王国林

    2015-01-01

    In order to explore the method for reducing noise ,the tire model of 205/55R16 was chosen as the research object ,and the effect of bionic V‐riblet non‐smooth surface on tire pattern aerodynamic noise was studied .By taking the single pitch groove volume variation information during tire rolling as the boundary condition ,the pattern aerodynamic noise model was established by computational fluid dynamics (CFD) .A noise spectrum comparison between the calculated with measured was used to validate the proposed model .Inspired by the bionic design ,the influences of bionic V‐riblet non‐smooth structure designed in the bottom of groove on pattern aerodynamic noise were analyzed .From the Reynolds stress and turbulent kinetic energy ,the noise reduction mechanism of the non‐smooth structure on pattern aerodynamic noise was revealed .The optimum bionic V‐riblet non‐smooth struc‐ture design with the maximum noise reduction was ported to the mix grooves ,and the results show that a mixed arrangement with non‐smooth structure can reduce the groove internal fluid instabilities , thus significantly reduce the noise ,w hich can reach to 4 .6 dB .%为探索降低花纹气动噪声的方法,以205/55R16半钢子午线轮胎为研究对象,研究V形仿生非光滑结构对轮胎花纹气动噪声的影响.以滚动轮胎单一节距的花纹沟体积变化信息为边界条件,采用计算流体力学建立了花纹气动噪声仿真模型,通过与试验测试声压频谱二者信息对比,说明了花纹气动噪声模型的可靠性.在此基础上,借鉴工程流体领域仿生减阻降噪的思路,研究了花纹沟底部布置不同尺寸的V形非光滑结构对花纹气动噪声的影响,从雷诺应力、湍流动能两个流体流场参数揭示了非光滑结构对花纹气动噪声降噪机理.将降噪效果最佳的V形非光滑结构移植到混合花纹沟上并进行花纹气动噪声分析,结果表明:在混合

  17. 仿生射流表面孔径与射流速度耦合减阻特性数值模拟%Numerical simulation of the drag reduction characteristics of a bionic jet surface aperture coupled with jet speed

    Institute of Scientific and Technical Information of China (English)

    赵刚; 谷云庆; 赵华琳; 夏冬来; 姚建均

    2012-01-01

    In consideration of the problem of a flow field of a bionic jet surface and based on the bionic theory of the non-smooth surface the drag reduction, the jet characteristics in the shark gill area were studied, and a bionic surface model and extensible model were built. Using the turbulence model of shear-stress transport SST k-ω, the numerical simulation of a bionic jet surface model was completed. When the main flow field speed was 20 m/s, the influence of different diameters of the jet hole coupled with different jet speeds on the frictional resistance, differential pressure resistance and drag reduction ratio was analyzed. Furthermore, the drag reduction mechanism of a bionic jet surface was also studied. The results show that the average drag reduction rate reaches the maximum of 11, 566% when the jet aperture is 5mm with the jet velocity conjugated in a coupling format, laying the foundation for the research of drag reduction characteristics in the case of bionic jet surface multi-factor coupling.%针对仿生射流表面流场问题,基于非光滑表面减阻的仿生学理论,对鲨鱼鳃裂部位射流特征进行分析研究,建立具有类似于鲨鱼腮裂部位射流特征的仿生射流表面模型及可拓模型.利用SST k-ω湍流模型对仿生射流表面模型进行数值模拟,在主流场速度为20 m/s时,分析了不同射流孔径与不同射流速度耦合情况对壁面摩擦阻力、压差阻力及减阻率的影响,并对仿生射流表面减阻机理进行分析.研究表明在射流孔为5 mm时与射流速度耦合情况下的平均减阻率最大,为11.566%,同时为仿生射流表面多因素耦合情况下的减阻特性研究奠定基础.

  18. Optimization of Semi-bionic Extraction Technology for Rhubard by Uniform Design%均匀设计法优选大黄半仿生提取工艺

    Institute of Scientific and Technical Information of China (English)

    黄良永; 孟斐; 杨光义

    2014-01-01

    目的:优选大黄的半仿生提取工艺条件。方法:以芦荟大黄素、大黄酸、大黄素、大黄酚的总含量,总蒽醌含量和干浸膏得率为综合评价指标,采用均匀设计法优选大黄半仿生提取工艺。结果:通过优化并结合工业生产实际,确定三煎用水的pH依次为2.0、6.5、9.0;煎煮时间依次为:2,1,1 h。结论:本法为大黄的优化提取提供了理论依据。%Objective: To optimize semi-bionic extraction(SBE)of rhubard. Methods: The best extraction conditions of semi-bionic extraction for rhubard were optimized by uniform design with the total content of loeemodin, rhein, emodin, chrysophanol, and anthraquinone and the dried extract weight as the indices. Results:According to the optimization and the industrial production condi-tion, the pH values of water in three times of extraction were 2. 0,6. 5 and 9. 0,and the extraction time was 2, 1, 1 h, respectively. Conclusion:This method provides a theoretical basis for the optimization of rhubard extraction.

  19. Optimization of Semi-bionic Extraction Technology of Forsythia Suspensa by Uniform Design%均匀设计法优选连翘半仿生提取工艺

    Institute of Scientific and Technical Information of China (English)

    黄良永; 孟斐; 杨光义

    2014-01-01

    目的::优选连翘的半仿生提取工艺条件。方法:以连翘酯苷A、连翘苷的含量和干浸膏得率为综合评价指标,采用均匀设计法优选连翘半仿生提取工艺。结果:通过优化试验并将试验结果经过DPS数据处理,确定最优条件并结合生产实际,确定三煎用水的pH依次为2.0,7.0,10.0;煎煮时间依次为:1,0.5,0.5 h。结论:本法为连翘的优化提取提供了理论依据。%Objective:To optimize semi-bionic extraction(SBE)of Forsythia suspensa. Methods: The best conditions of semi-bionic extraction of Forsythia suspense were screened by uniform design with the total content of forsythoside A,and forsythin and dried extract weight as the indices. Results:The results of the uniform design were analyzed by DPS data, and combined with the industrial production conditions, the optimal extraction technology was as follows:the pH value of water in the three-time extraction was 2. 0,7. 0 and 10. 0 with the extraction time of 1. 0h,0. 5h and 0. 5h, respectively. Conclusion: The technology provides a theoretical basis for the extraction optimization of Forsythia suspensa.

  20. 均匀设计优选金茵清热口服液半仿生提取的工艺条件%Optimization of Semi-bionic Extraction Conditions for Jinyin Qingre Oral Liquids by Uniform Design

    Institute of Scientific and Technical Information of China (English)

    叶方; 刘襄艳; 杨光义; 黄良永; 刘泽干; 杜婷

    2015-01-01

    Objective:To optimize the conditions of semi-bionic extraction for Jinyin Qingre oral liquids. Methods:The best con-ditions of the semi-bionic extraction for Jinyin Qingre oral liquids was optimized by uniform design with the yield of chlorogenic acid, geniposide and total phenolic acid, and the dried extract weight as the indices in a comprehensive evaluation. Results:The optimal pH of water for the three-time decoction was 2. 89, 6. 50 and 8. 43, respectively, and the total extraction time was 2. 0 h. Conclusion:Combined with the actual production, the pH value of water is 3. 0, 6. 5 and 8. 5 with the decoction time of 1. 0, 0. 5 and 0. 5h, re-spectively.%目的::优选金茵清热口服液半仿生提取的工艺条件。方法:采用均匀设计,以绿原酸得率,栀子苷得率,总酚酸得率和干浸膏收率为指标进行综合评价,优选金茵清热口服液半仿生提取的工艺条件。结果:优选的三煎用水pH依次为A=2.89,B=6.50,C=8.43;煎煮总时间D=2.0 h。结论:结合生产实际,确定3煎用水的pH依次为3.0,6.5,8.5;煎煮时间依次为1.0,0.5,0.5 h。

  1. 基于增强学习控制器的仿生水下机器人姿态镇定研究%Reinforcement Learning Controller Based Attitude Stabilization for Bionic Underwater Robots

    Institute of Scientific and Technical Information of China (English)

    张卫武; 林龙信

    2012-01-01

    仿生水下机器人是水下机器人领域的一个重要研究方向;利用增强学习控制器对仿生水下机器人的姿态镇定问题进行了研究;增强学习控制器主要由回报函数、学习样本数据库、神经网络、动作选择以及Q学习算法等模块构成,可通过直接与环境交互生成最优动作选择策略;镇定仿生水下机器人的偏航角姿态镇定的仿真试验表明,增强学习控制器在偏航角姿态镇定方面的性能较为理想;学习样本数据库的引入显著提升了增强学习控制器的姿态镇定性能;学习样本数据库的容量对学习性能存在较大影响.%The bionic underwater robot is one of the most important fields in underwater robots. This paper discussed the attitude stabilization problem of bionic underwater robots based on the reinforcement learning controller which is composed of reward function, database of learning samples, neural network, action selection and the Q—learning algorithm. Simulation experiments about the yawing angle stabilization are carried out, and results indicate that the reinforcement learning controller has a good performance in yawing angle stabilization; the database of learning samples improves the attitude stabilization performance evidently; the capacity of the database of learning samples has a big influence on the learning performance.

  2. Self-Powered System of Articulated Bionic Robotic Fish Using Wave Energy Harvesting%基于波浪能获取的多关节仿生机器鱼能源自给系统

    Institute of Scientific and Technical Information of China (English)

    董二宝; 颜钦; 张世武; 杨杰

    2009-01-01

    A self-powered system of the multi-joint bionic robotic fish using wave energy to generate power by joint swing is presented to solve the energy bottleneck problem for the long-term underwater service. The frequency characteristics and energy harvesting potential of wave are analyzed according to the random wave theory. An energy harvesting system generating power by joint swing is designed, and its electromechanical model is developed. Finally, simulation and single joint swing based power generation experiment indicate that this method is effective and applicable to designing self-powered system for long-term underwater service of bionic robotic fishes.%为解决仿生机器鱼水下长期服役的能源瓶颈问题,提出利用波浪能摆动关节来发电的多关节仿生机器鱼能源自给系统.根据随机波浪理论分析了海浪的频谱特性和软能潜力,设计了利用关节摆动发电的能源获取系统,并建立该系统的机电模型.最后,通过仿真模拟和单关节摆动发电试验验证了该方法的可行性,为仿生机器鱼水下长期服役的能源自给系统设计提供了参考.

  3. 数字液压驱动技术在仿生足式机器人中的应用%The implication of digital hydraulic drive technology in bionic legged robot

    Institute of Scientific and Technical Information of China (English)

    白晶; 秦现生; 伍彬艺

    2015-01-01

    The traditional hydraulic drive method is generally used in bionic robot joint.Its energy efficiency is low, and unable for meeting the application requirements of robot high load capacity and long continuous working time independent.It analyzes the joint motion of bionic legged robot, presents a method to realize the joint driv-ing system through the use of digital hydraulic, and simulates the required flow and energy efficiency of this sys-tem, compares with the traditional hydraulic driving system.The result shows that the digital hydraulic can re-duce flow rate required and improve the energy efficiency.%仿生足式机器人关节普遍采用传统液压驱动方式,由于其能量效率不高,无法满足机器人高负载能力和自主连续工作时间的应用要求。在对机器人关节运动进行分析的基础上,提出了一种基于数字液压的关节驱动系统的实现方法,并对其所需流量和能量效率进行分析和仿真。结果表明:与传统液压相比,数字液压能减少关节驱动系统所需流量,从而提高能量效率。

  4. Regenerative Engineering and Bionic Limbs

    OpenAIRE

    James, Roshan; Laurencin, Cato T.

    2015-01-01

    Amputations of the upper extremity are severely debilitating, current treatments support very basic limb movement, and patients undergo extensive physiotherapy and psychological counselling. There is no prosthesis that allows the amputees near-normal function. With increasing number of amputees due to injuries sustained in accidents, natural calamities and international conflicts, there is a growing requirement for novel strategies and new discoveries. Advances have been mad...

  5. The bionic eye: a review.

    Science.gov (United States)

    Ong, Jong Min; da Cruz, Lyndon

    2012-01-01

    Visual prostheses including artificial retinal devices are a novel and revolutionary approach to the treatment of profound visual loss. The development of the field of visual prosthesis began with cortical prosthetic devices but since then, a variety of devices which target different sites along the visual pathway have been developed with the retinal prosthesis being the most advanced. We present a review of the history of these devices, an update on the current state of play and future prospects of this field. PMID:21575116

  6. Doric, Ionic, Bionic and Printmaking.

    Science.gov (United States)

    Hammond, Mary Alice

    1981-01-01

    Describes a combined local history/printmaking project conducted by students in grades one through nine at Armitage Academy in Kenosha, Wisconsin. Students studied and drew local buildings and printed the results as a calendar. (SJL)

  7. Bionic Skin – Disartificialising architecture

    OpenAIRE

    Braun, Dirk Henning; Inhofer, Sebastian

    2016-01-01

    It has always been a basic principle of biomimicry to not just copy natural ideals. But instead of transferring all the possible advantages of natural solutions into our restricted human technologies as biomimicry is doing today, we should try to reconnect our productions and therefore ourselves further back with our natural origin. Resulting from this approach it has to be proven if the exploitation of living material and the use of genetically engineered life-forms in an architectural conte...

  8. The Function and Prospect of Bionics Wild Cultivation of Edible Fungi in Beijing Eco-conserving Division%食用菌仿野生栽培在北京生态涵养发展区的作用与展望

    Institute of Scientific and Technical Information of China (English)

    李金海; 胡俊; 刘松; 秦岭; 陈青君

    2011-01-01

    食用菌仿野生栽培能够有效利用人工林和天然林的大环境,产品天然优质。介绍了北京生态涵养发展区野生菌原始的生长状态、食用菌仿野生栽培的环境优势、仿野生栽培的作用、仿野生食用茵产品的优缺点、仿野生栽培适宜的种类、技术和发展前景等.%Bionics wild cultivatton of Edible fungi can make est, and with high quality product. This paper introduces the original growth status of wild mushroom, the environmental advantages of bionics wild cultivation of edible fungi, the function and species suitability of bionics wild cultivation, the advantages and disadvantages of the product, the technology and prospect, etal.

  9. 18CrMnTi钢表面激光微造型的仿生工艺%Bionic technique of laser micro-texturing on 18CrMnTi steel surface

    Institute of Scientific and Technical Information of China (English)

    钱良存; 洪炜宁; 邵陆寿; 袁根福; 梁华琪

    2011-01-01

    为了探讨激光微造型表面仿生非光滑效应中粗糙度提高的工艺,运用SEM扫描电镜和图像处理技术提取荷叶表面微纳米形貌特征,在犁铧钢(18CrMnTi)表面进行激光微造型表面仿生正交试验研究.研究表明,图像处理中Sobel边缘算法有效地提取了SEM图片表面微纳米形貌层次特征,图像阈值取255时,提取表面形貌特征最多,犁铧钢仿生表面基本上再现了荷叶表面形貌:激光表面微造型极显著因素的主次关系是阈值>打标次数>电流强度,表面仿生最优值处的微造型粗糙度参数,即表面轮廓算术平均偏差(Ra)、微观不平度十点高度(Rz)和最大轮廓高度(Ry)提高的倍数分别为86.11、232.29和116.06.研究结果为激光微造型表面仿生多层次提取表面形貌信息和提高表面粗糙度工艺提供参考.%In order to explore surface roughness technology in non-smooth bionic affection by laser micro-texturing, the orthogonal experiment was made in the plowshare (18CrMnTi) steel bionic surface, based on scan electron microscopy (SEM) photos and the technique of image processing to extract micro-nano-morphology information form lotus leaf surface. Results showed that in the processing of image Sobel edge operator was the most effective method for extracting layers information of SEM micro-nano-morphology photos. The extracted morphology information was up to maximum value at the point of threshold value 255, and surface morphology of lotus leaf was textured in the plowshare surface. The relationship of significant experimental factors was, threshold value > number of marking > current intensity. The optimal values of roughness parameters, I.e. Ra, Rz and Ry increased by 86.11, 232.29 and 116.06 times respectively. This research has significance in extracting the surface information of layers morphology and enhancing the surface roughness by laser micro-texturing bionic surface.

  10. Local Stability Analysis of Bionic Simple Supported Plate for Crane'S Top Flange%起重机上翼缘仿生简支板的局部稳定性分析

    Institute of Scientific and Technical Information of China (English)

    付为刚; 程文明; 王弘; 林炳焜

    2012-01-01

    研究面内荷载作用下起重机上翼缘仿生简支板的局部稳定性分析问题.针对起重机箱梁结构轻量化设计,上翼缘板厚度变薄导致的局部稳定性改进.借鉴与起重机上翼缘板存在相似结构、受力和功能特性的生物叶脉结构,模仿叶脉倾斜、交错等结构特征提出了叶脉斜向肋箱梁结构设计.鉴于斜板屈曲稳定性数值求解的复杂性,给出仿生简支板结构模型分析,给出约束边界条件和加载的具体实现方法.利用有限元软件结合实例分析表明,仿生简支板结构局部稳定性大大提高.简支斜板底边和高度不变时,屈曲临界载荷随倾角增大而减小;斜板底边长和倾角不变时,屈曲临界载荷随高度增大而减小.简支加劲斜板倾角θ=45 °较90 °时屈曲临界载荷提高较大.%The research on the local stability analysis of the bionic simply supported skew plate under in - plane compressive loading for the crane's top flange was carried out. In the lightweight design of the crane's box girder, the top flange plate becomes thinner, which leads to the top flange plate's local stability problem. The similarity in the structure of the top flange plate of the crane and the leaf vein, load - carrying and function were analyzed. The box girder with leaf vein's skew stiffener was given by simulating the leaf vein's skew and interlaced structure features. Because of the complexity of numerical solution for the skew plate's buckling analysis, the concrete method on the constraint boundary condition and applying load was given for the bionic simply supported skew plate. Through the a-nalysis of the case study, we found that the local stability for the bionic simply supported skew was improved greatly. For the simply supported skew plate, its buckling critical load decreased by the increasing of the angle of inclination when the bottom side length and height were unchangeable, besides, its buckling critical load decreased

  11. Investigation of electrostriction appliance and its application for bionics flapping aircraft%电致伸缩器的研制及其在仿生扑翼飞行器中的应用

    Institute of Scientific and Technical Information of China (English)

    金晓怡; 颜景平; 夏雨阳; 李德选

    2006-01-01

    A novel design for an electrostriction appliance derived from the theory and application of electromagnetics is presented. The working principle, that is the application of gravitation and elasticity together to realize the "shrinking" and "extending" effect from the distortion and transforming power into mechanical energy, is briefly explained. The characteristic parameter relationships are established and the experimental research is performed. Experimental results show that this sort of electrostriction appliance can perform well as regards driving force and beeline displacement, and furthermore, its self-weight is smaller. This makes it suitable for beeline drivers with a high application value, especially for the driver of the bionic appliance. In the application of the electrostriction appliance to a bionics-flapping aircraft, the wings can work with a flapping angle in the range of a certain value by controlling the "shrinking" and "extending" of the electrostriction appliance. It can reduce the startup power and the impact load of the driver. The flapping extent of the wings will change when the voltage which is put into the electrostriction appliance varies. This makes it more flexible as the bionics-flapping aircraft realizes different actions of flying.%提出了一种源于电磁铁理论和应用的电致伸缩器的新颖构思,简述了电致伸缩器采用引力与弹力互联以形变产生伸缩效应、将电量转化为机械量的工作原理,建立了电致伸缩器的特性参数关系,进行了电致伸缩器的实验研究.研究表明,这种电致伸缩器能获得较好的驱动力和较大的直线位移且自重较小,是一种具有较高应用价值的直线驱动器,尤其适用于生物器件的驱动.将电致伸缩器应用于仿生扑翼飞行器,通过控制电致伸缩器的"缩"和"伸",能实现翼在一定角度范围内的上下拍动.该驱动方式能减小驱动器的启动功率和整个系统的冲击载荷,通过改

  12. 基于仿生学原理的射流表面减阻性能研究%Study on drag reduction characteristics of a jet surface based on the principles of bionics

    Institute of Scientific and Technical Information of China (English)

    李芳; 赵刚; 刘维新

    2015-01-01

    针对仿生射流表面减阻问题,建立仿生射流表面模型,利用SST k-ω湍流模型对其进行数值模拟,所得射流速度曲线与实验数据吻合良好。研究射流流体对边界层厚度的影响规律,探讨仿生射流表面的减阻机理。利用4因素3水平的正交试验,对射流表面和光滑表面摩擦阻力进行对比分析,得到了射流模型参数对减阻效果和节能效果的影响规律:在不考虑外加射流能量的情况下最大减阻率达50.41%;射流速度对节能效果的影响最大,主流速度对节能效果的影响其次,节能效率与主流速度成正比,最大节能效率为276。射流改变了边界层内的流场结构,使得射流表面的边界层厚度增大,垂直于射流表面的速度梯度减小,摩擦阻力减小。%The model of the bionic jet surface was built for the study of drag reduction on the bionic jet surface.Nu-merical simulations were carried out by using SST k -ωmodel.The curves of jet velocity from simulations are in good agreement with experimental data.Furthermore, this paper studied the influence of jet fluid on the thickness of the boundary layer, and explored the drag reduction mechanism of the bionic jet surface.The comparative analysis of friction drag of the jet surface and the smooth surface were performed by using orthogonal experimental design. From the analysis, it can be found that jet model parameters contribute greatly to drag reduction and energy-saving effect.Specifically, the rate of drag reduction can be up to 50.41%without considering the external jet energy.And the jet velocity has greatest impact on energy-saving effect.Then, the influence of cross-flow velocity on energy-sav-ing effect is followed:the energy efficiency is indirect proportion to cross-flow velocity and the maximum of energy efficiency can be up to 276.It also can be found that jet has changed the flow structure in the boundary layer and increased the

  13. Bionic Oxygen humidifier to prevent microbio aerosol and nosocomial pneumonia%仿生学表面湿化防止微生物气溶胶引发医院肺炎的实验研究

    Institute of Scientific and Technical Information of China (English)

    王承竹; 曹艳琼; 王莉莉

    2009-01-01

    目的 研究常规氧疗时氧气加湿和输送过程中微生物的传播规律,寻找杜绝气溶胶产生和微生物传播的方法,探讨解决吸氧相关医院肺炎的方案.方法 应用常规入水湿化和仿生表面湿化两种装置,使用金黄色葡萄球菌人为污染湿源物质后,对吸氧管终端氧气中的金黄色葡萄球菌进行培养计数.结果 湿源物质污染金黄色葡萄球菌2.5×106/ml的当天、第2天和第3天,将氧气经过入水湿化,终端氧气中金黄色葡萄球菌计数分别为83.1、125.2、263.2 CFU/ml.相同条件下,将氧气经过表面湿化,终端氧气中未检测到金黄色葡萄球菌.氧气经过表面湿化与入水湿化相比,当天、第2天和第3天的金黄色葡萄球菌计数,差异有统计学意义(P<0.01).结论 经过常规入水湿化后,金黄色葡萄球菌可以被输送到吸氧管终端,而经过表面湿化,湿源物质中的金黄色葡萄球菌不能到达吸氧管终端.切断微生物的传播途径,将避免与吸氧相关医院肺炎的发生,对控制医院感染,保证患者安全具有重要意义.%Objective To observe how to prevent nosocomial pneumonia by cutting delivery of microbio-aero-sol to patient. Methods Two kinds of humidifier were used. One is unique bionic humidifier mimicking respiratory membrane and the other is conventional bubble humidifier. In contamination model of humidification material with S. Aureaus, the end of tube was contaminate with S. Aureaus. The amount of microbio-aerosol was compared be-tween two humidifiers. Resuls First, second and third day after the humidification material was contaminated with E. coli of 2.5×106/ml, the bacteria count in bubble humidifier group was 83.1、125.2、263.2 CFU/ml respective-ly. There was no positive culture of bacteria in bionic humidifier group. Conclusions Aureaus cannot be transmit-ted through bionic humidifier to the end of oxygen cannula, which is important for prevention of nosocomial pneumonia.

  14. 均匀设计法优选抗感利咽糖浆半仿生法提取的工艺条件%Technical Condition Optimization of Semi-bionic Extraction for Kanggan Liyan Syrups by Uniform Design

    Institute of Scientific and Technical Information of China (English)

    杨洋; 黄良永; 杜士明; 杨光义

    2015-01-01

    Objective: To optimize the conditions of semi-bionic extraction for Kanggan Liyan syrups. Methods: The samples were extracted by water with different pH values under the same conditions of formula composition and dosage, extraction temperature, filtration method, water voulme, centrifugal time and concentration multiple. The best conditions of the semi-bionic extraction for Kang-gan Liyan syrups were screened by uniform design with the content of forsythoside A, polydatin, baicalin and emodin and the dried ex-tract weight as the indices. Results:The best technical conditions were as follows:the pH value of water for the 1st, 2nd and 3rd de-coction was 4. 9, 7. 5 and 9. 0, respectively, and the total extraction time was 2h. Conclusion:According to the industrial production conditions, the pH value of water for the 1st, 2nd and 3rd decoction is 5. 0, 7. 5 and 9. 0 with the extraction time of 1h,0. 5h and 0. 5h, respectively.%目的::优选抗感利咽糖浆的半仿生提取条件。方法:采用均匀设计法,在处方组成和用量、煎提温度、煎提用水量、过滤方法、离心时间、浓缩倍数等条件相同的情况下,用不同pH的水溶液提取方药,以连翘酯苷A、虎杖苷、黄芩苷、大黄素的含量及干浸膏的得率为指标,经过标准化处理,综合评价,优选该方药半仿生提取的工艺条件。结果:最佳的提取工艺为三煎用水的pH值依次为4.9、7.5、9.0,三煎总时间为2 h。结论:结合生产实际,确定三煎用水的pH值依次为5.0、7.5、9.0,3煎提取时间依次为1.0 h、0.5 h、0.5 h。

  15. Bionics of Animal Behavior in Daoyin Health Preservation Origin, Classification and Modern Value%导引养生中的动物行为仿生:缘起、分类及其现代价值

    Institute of Scientific and Technical Information of China (English)

    赵海涛; 王柏利

    2015-01-01

    This paper analysis the historical and cultural background of the Daoyin Health Preservation from the view of bionics of Animal Behavior by the methods of document and data to further tap principle of Animal Behavior and the realistic significance to the contemporary society and Bio-inspiration. The paper believes that the purpose of human imitation of animal behavior is for the sake of“longevity”. Traditional Culture provided the source for Life of Bio-inspiration from Animal Behavior. Life Bio-in-spiration from Animal Behavior include animals foraging behavior and sports behavior such as animal behavior. The modern value of life of bio-inspiration from animal behavior performance is to promote the value of health and longevity, to develop bionics re-search in the field of scientific value and to relieve social pressure,also to promote the harmonious development of society.%采用文献资料法,从动物行为仿生学的角度,对导引养生形成的历史和文化背景进行深入分析。进一步挖掘传统导引养生模仿动物行为的仿生学原理,以及在当代社会和仿生学的现实意义。研究认为:人类模仿动物行为的目的是为了寻求“长生”。传统文化为导引养生的动物行为仿生提供思想源泉。导引养生中的动物行为仿生行为包含有动物觅食行为、动物运动行为等仿生行为。导引养生的动物行为仿生的现代价值表现为:促进健康长寿的时代价值、拓展仿生学研究领域的科学价值和缓解社会压力促进社会和谐发展的社会价值。

  16. 仿生创新方法及其在止回阀设计中的应用%A bionic innovation method and its application in check valve design

    Institute of Scientific and Technical Information of China (English)

    赖朝安

    2013-01-01

    Analyses the advantages and disadvantages of TRIZ methods and bionics, the innovative design approach based on a combination of TRIZ and bionics was put forward. The traditional check valves such as ball valve and wafer check valves have some shortcomings, such as the high resistance coefficient. Basing on this method, a new type of pyramid orange-peel check valve was design. When the disc is open,the peels are beside the channel;when the disc is close,the peels are in the form of pyramid, thus,it can effectively reduce the area of obstructing water. Experimental analysis was done for the flow field of the check valve. The results show that the flow resistance coefficient is much less than that of conventional check valve. It also shows that it has better capacity for water flowing and energy conservation.%针对发明问题解决理论(TRIZ)方法与仿生学的优缺点,提出基于TRIZ与仿生学相结合的仿生创新设计方法.采用该方法,针对传统止回阀如球形止回阀、对夹式止回阀等流阻系数大的缺点,设计出一种新型的金字塔型多瓣止回阀,当流体正向流动时,阀瓣打开并位于流道侧面;当流体回流时,阀瓣关闭处于斜立状态,因此可以有效地减少阀瓣开关行程,并减小对流体的阻力与作用时间,降低了流阻系数.实验证明:该止回阀阀门的流通能力很强,能起到一定的节能作用.

  17. 电磁防护仿生原理与故障自修复机制研究%Study on principle of electromagnetic-proof bionics and fault-restore mechanism

    Institute of Scientific and Technical Information of China (English)

    原亮; 满梦华; 常小龙

    2014-01-01

    借鉴生物神经网络信息传递的抗扰特点,开展了电磁干扰环境下通过仿生方式进行的电子电路抗扰与防护研究,以便采用新原理、新技术和新方法解决传统的电磁干扰防护手段不足的问题。通过基于布尔模型的复杂生物网络拓扑建模与简并特征分析,证明了网络简并性与功能鲁棒性之间的相互作用关系,以解决抗扰原理问题;通过构建基于神经元电路和可塑突触电路的神经网络电路模型,分析了突触权重的分布对于网络自修复特性的影响,以解决防护机制问题。进而,为电磁防护仿生原理及自修复机制的深入研究形成了一定的理论基础并完成了前期实践。%As we borrowed the wisdom from biological neural system,the characteristic of interference-proof in information transferring process has been carefully studied. Our study in-cludes the response of electrical-interference-proof circuit in electromagnetic environment,by means of bionics redesign. By doing so,new principles,new technics and new ways are adopt-ed to solve the unavoidable situations in traditional electromagnet protection design. The com-plex bionic topological networks based on Boolean model were firstly built and the charactoristic of degeneracy were analyzed,then the bidirectional actions between degeneracy in networks and the robustness of functions were proved in order to fill the gap to deal with the need of inter-ference-proof. Based on the creation of the neuron networks and the electrical synapses in char-acter of plasticity,the effective of the distribution in the weight of synapse to the character of network self-restoration was studied afterwards so that the corresponding mechanism could be defined. In this way,the research laid a theoretical foundation for electromagnetic protection and the self-restoration.

  18. 高灵敏度宽频带阵列式仿生矢量水听器研究%Research on the Arrayed Bionic Vector Hydrophone with High Sensitivity and Wide Frequency Band

    Institute of Scientific and Technical Information of China (English)

    宋小鹏; 薛晨阳; 张国军; 刘林仙

    2012-01-01

    针对MEMS仿生矢量水听器灵敏度和频带相互制约,不能同时满足宽频带高灵敏度测量的问题,在单个MEMS矢量水听器的基础上,设计了由四个单元构成的2×2单片集成微敏感结构阵列,实现了水听器的高灵敏度和宽频带.通过理论分析和ANSYS仿真分析,确定阵列微结构的尺寸,采用硅微机械加工工艺完成了阵列微结构的加工,最后在水声一级计量站对封装好的水听器进行了灵敏度和指向性校准测试.测试结果表明:该阵列式仿生矢量水听器未加前置放大时灵敏度达到-189 dB,频响范围20~5 000 Hz,具有良好的“8”字型指向性.%The MEMS bionic vector hydrophone, for the mutual restriction of its sensitivity and frequency band, cannot meet the requirements for the measurement of high sensitivity and wide band simultaneously. In order to solve the problem, a kind of 2 X 2 single chip integrated micro sensitive structure array consisting of four units was designed to realize the high sensitivity and wide band of the hydrophone based on a single MEMS vector hydrophone. Then, the size of the micro structure for the array was confirmed through the theoretical and ANSYS simulation analysis, and the process for the micro structure for the array was completed by adopting the process technology of the micro-machine. Finally, the test for the sensitivity and directional calibration was conducted for a sealed hydrophone at the underwater acoustic calibration laboratory. The test result indicates that the array type bionic hydrophone without the installment of a preamplifier has the sensitivity of - 189 dB, the frequency range of 20 - 5 000Hz and a good directionality in the shape of "8".

  19. MULTILEVEL BIONIC ALGORITHM FOR DETECTION AND IDENTIFICATION OF SOFTWARE AND HARDWARE IMPACTS ON TELECOMMUNICATION NETWORKS Многоуровневый бионический алгоритм для обнаружения и идентификации программно-аппаратных воздействий на информационно-телекоммуникационные сети

    OpenAIRE

    Isupov A. B.

    2012-01-01

    Multilevel bionic algorithm for detection and identification of software and hardware impacts on telecommunication networks is considered in the article. The results of applying of the software implementation of the algorithm are discussed

  20. 煤炭输送带表面对煤粉的仿生脱附研究%Bionic Anti-adhesive Study Between the Coal Conveyor Belt Surface and the Coal

    Institute of Scientific and Technical Information of China (English)

    李晶; 徐成宇; 曾丽娜

    2013-01-01

    分析了煤炭带式输送机输送带表面与煤粉粘附现象,从生物体表自洁现象中得到启示,利用生物仿生学原理,提出改善输送带表面形貌以达到与煤粉脱附的目的.以荷叶表面结构形貌为原型,分析其微观结构形貌,运用相似工程学原理设计出一种具有凸包结构的输送带表面形貌,以达到有效脱附煤粉,并建立该结构的实体模型.%With analysis of the phenomenon that coal fines adsorb to the belt surface on coal conveyor,a new idea focused on improvement in the surface topography of conveyor belt to decrease adhesion of coal fines is presented on the basis of inspiration from the biological self-cleaning phenomenon and perspective of bionics.The surface topography with papillary structure of conveyor belt surface is designed on the basis of Lotus-leaf-likes surface with analysis of its microstructure in accordance with similarity principle.The new structure could effectively prevent coal fines from adhering to conveyor belt surface.A model of the new structure is also built.

  1. 仿生优化算法在片上网络映射的应用研究%The Application of Bionic Optimization Algorithm in NoC Mapping

    Institute of Scientific and Technical Information of China (English)

    胡伟; 欧阳一鸣

    2011-01-01

    System on Chip has been developed to Network on-chip stage at which the energy consumption of NoC technology has become the main constraint.Biological bionic algorithm and ant colony optimization algorithm are adopted in NoC mapping to optimize energy consumption.Experimental results show that ant colony optimization algorithm using a good local search algorithm can quickly converge,and 15%-40% of the communication energy consumption can be reduced depending on its various applications.%片上系统发展到片上网络阶段,能耗问题已经成为片上网络技术的重要约束。在片上网络映射中应用了生物仿生算法—蚁群优化算法使系统能耗达到优化,实验表明蚁群优化算法运用较好的局部搜索算法可以很快地收敛,针对不同的应用,可以减少15%-40%的通讯能耗。

  2. Application of Bionic Design in Design of City Public Space%浅析仿生设计在城市公共空间设计中的应用

    Institute of Scientific and Technical Information of China (English)

    刘斯荣; 贾婧

    2012-01-01

    Construction and utilization of public space plays a more and more important role in the plan and construction of modern city. It embodies the characteristics of city, and is the ties of human and nature. The use of bionics riches the designing method of city public space, and is the headspring of design innovation. It promotes the use of ecological idea in landscape design, which is significant and has vast potential for future development.%在现代城市的规划建设中,公共空间的建设和利用有着越来越重要的作用.它是彰显城市个性特色的重要载体,是人们与大自然交流的纽带.仿生学的渗透丰富了城市公共空间的设计的形式语言,成为设计创新的源泉,促使生态理念运用于景观设计的更深层次,具有深远的意义和广阔的发展前景.

  3. Design of Plant Leaf Bionic Camouflage Materials Based on Spectral Analysis%基于光谱分析的植物叶片仿生伪装材料设计

    Institute of Scientific and Technical Information of China (English)

    杨玉杰; 刘志明; 胡碧茹; 吴文健

    2011-01-01

    The influence of structure parameters and contents of plant leaves on their reflectance spectra was analyzed using the PROSPECT model. The result showed that the bionic camouflage materials should be provided with coarse surface and spongy inner structure, the refractive index of main content must be close to that of plant leaves, the contents of materials should contain chlorophyll and water, and the content of C-H bond must be strictly controlled. Based on the analysis above, a novel camouflage material, which was constituted by coarse transparent waterproof surface, chlorophyll, water and spongy material,was designed. The result of verifiable experiment showed that the reflectance spectra of camouflage material exhibited the same characteristics as those of plant leaves. The similarity coefficient of reflectance spectrum of the camouflage material and camphor leaves was 0. 988 1, and the characteristics of camouflage material did not change after sunlight treatment for three months. The bionic camouflage material, who exhibited a high spectral similarity with plant leaves and a good weather resistance, will be an available method for reconnaissance of hyperspectral imaging hopefully.%利用植物单叶光谱模型PROSPECT分析了植物叶片结构和组分对其反射光谱的影响.结果表明,模拟植物叶片反射光谱的仿生伪装材料应具有粗糙表面和疏松多孔结构,基体材料的折射指数应接近植物叶片且在400~2 500 nm之间基本不变,成分中应含有叶绿素和水并严格控制C-H键的含量.依据上述原则,设计了一种由粗糙透明防水表面、叶绿素、水和多孔材料四层构成的新型仿生伪装材料.验证实验表明,上述四层简单复合后的反射光谱即呈现出与植物叶片一致的反射光谱特征,相似度可达0.988 1,且经过三个月的日照后,其反射光谱特征不变,显示了较好的耐候性.该伪装材料与植物叶片光谱相似度高,耐候性好,有望成

  4. 三种仿生不育剂对栗山天牛成虫的不育效应%Sterilized impacts on adults of oak longhorn beetle, Massicus raddei by three bionical chemosterilants

    Institute of Scientific and Technical Information of China (English)

    姜静; 杨忠岐; 唐艳龙; 唐桦; 高纯; 王小艺; 孟庆伟; 刘松君

    2011-01-01

    为筛选出防治栗山天牛Massicus raddei (Blessig)成虫的不育剂,本研究利用灭幼脲Ⅲ号、除虫脲和杀铃脲3种仿生制剂分别稀释500倍、1000倍、1500倍、2000倍、3000倍和4000倍等6种浓度进行处理,对其成虫进行了不育性试验.结果表明,这3种不育剂不同处理在雌雄虫寿命、产卵量和产卵期、子代卵的孵化历期的差异均不显著,但经不育剂处理过的雌虫后期产卵量要明显小于对照;不同处理间子代卵的孵化率差异显著,特别是3种药剂500倍液处理后的孵化率分别为19.07%、23.74%和26.3%,远低于对照组的90.21%.三种不育剂1500倍以上的稀释浓度对卵的孵化均有明显的抑制作用,孵化抑制率与浓度之间呈正相关关系,其毒力方程均达到了极显著水平,其中来幼脲Ⅲ号比其它两种不育剂效果更好.%For selecting a bionical chemosterilant to control adults of the oak longhom beetle, Massicus raddei (Coleoptera: Cerambycidae) , a study on sterilized impacts of three bionical chemosterilants, i. e. , chlorbenzuron, diflubenzuron and triflumuron, were carried out. They were diluted to six different concentrations, i.e. , 500, 1000, 1500, 2000, 3000 and 4000 times as six treatments. The results showed that there were no significant differences among the three chemosterilants in female and male adult life - span, number of eggs - laying, the lasting time both of egg - laying and egg hatching. However, the egg numbers laid were much lower than the control group. Meanwhile, the egg - hatching rate indicated significantly different among the different treatments, and particularly the treatments of three chemosterilants with 500 - times dilution showed good results; the egg - hatching rates were 19. 07% , 23. 74% and 26. 3% respectively, comparing with the control group 90. 21%. The concentrations of three chemosterilants with 1500 -times dilution all revealed significant inhibitive impacts on egg

  5. The External Representation and Internal Mechanisms of Organizational Health Based on Enterprise Bionics%基于仿生视角的组织健康外在表征与内在机制分析

    Institute of Scientific and Technical Information of China (English)

    王兴琼

    2012-01-01

    企业仿生学的产生赋予企业生命体概念,企业组织也有健康与否之分,并有外在和内在的健康判断标准.根据文献分析争实证研究结果,组织健康的外在表征主要体现在企业绩效、员工健康和社会效益三个层面,可作为组织健康直观的判断标准;环境适应性、自我调节性、学习创新性、持续成长性和社会和谐性是组织健康的内在机制,体现了企业组织不断追求健康的过程.组织健康的外在表征和内在机制是结果与过程的关系,是理解组织健康的两个方面和两种视角.%Based on enterprise bionic, the firm is a living body, and business organization is also differentiated healthily or unhealthily, and has internal and external healthy criteria. Through literature analysis and empirical research, the external representation of organizational health is reflected in three aspects of corporate performance, employee health and social benefits, which can be used as visual criteria for judging organizational health, environmental adaptability, self -regulation, learning and innovation. Sustainable growth and social harmony are the intrinsic mechanisms of organizational health, which reflect the ongoing process of pursuit of health. The relationship between external representation and internal mechanism is the relationship between results and process, including two aspects and two perspectives of understanding organizational health.

  6. Reseach on the energy efficiency optimization device of pump based on combination bionics with TRIZ%采用仿生学与TRIZ相结合的水泵能效优化装置的研究

    Institute of Scientific and Technical Information of China (English)

    李林强; 赖朝安; 王京

    2011-01-01

    从水泵传输系统节能角度出发,运用仿生学与发明问题解决理论(TRIZ)相结合的方法,设计出一种水泵能效优化装置.利用FLUENT软件对该能效优化装置进行计算流体动力学(Computational Fluid Dynamics,CFD)对比实验分析,找出了其内部流场参数速度、压力等的变化规律.实验证明该装置能减少水泵出口处由于不规则湍流运动带来的水质点之间碰撞及能量损失,因而能起到一定的节能作用.%Form the point of transmission systems energy-saving of pump, using the method of combining bionics with TRIZ,designed the energy-efficiency eptimization device of pump. Did the CFD comparative experimental analysis for the nergy-efficiency eptimization device using the software of FLUENT,and found the changing laws of the parameters of its internal flow field,such as, velocity and pressure. Experiments show that this device can reduce the collision between water points and the energy loss due to irregular turbulence on the outlet of the pump. So the device played a certain role in energy conservation.

  7. Nondestructive testing and pull shear performance experiment on bionic heterogeneous compound materials interface%仿生结构异质复合材料界面无损检测及拉剪性能试验

    Institute of Scientific and Technical Information of China (English)

    田丽梅; 李子源; 可庆朋; 金娥; 董世运

    2015-01-01

    Bionic form heterogeneous composite material (BCHCM), which is inspired by the dolphin skin and formed by the compounding of polyurethane (PU) and cast iron, can be used as drag reduction material. However, PU and cast iron belong to completely different materials. When they are combined together, defects are easily formed on the interface, and these defects will affect their mechanical properties, and so will limit their application in engineering. The purpose of this study was to investigate interfacial nondestructive testing method and pull shear performance of these materials, and provide practical engineering application technology for them. The BCHCM in this study was composed of the surface material (PU) and basal material (cast iron). The elasticity surface material was mixed of polyurethane pre polymers (PUP) (C10H8N2O2·C6H14O3) and curing agent (C13H12N2CL2), and the contents of them were measured by quality ratio. In order to understand the effect of above two components on the shear stress, three kinds of quality ratios were considered, which were 100:10, 100:12 and 100:14.6 respectively. The basal material of cast iron and the bionic form were composite together using the casting and compressive moulding method. Nondestructive testing method for this composite material was investigated using EUT-101B ultrasonic flaw detector, and the dual probes were put on two sides of the BCHCM. One probe transmitted signal and the other probe received signal, and defect was judged through the changes of transmission acoustic intensity. The results showed that the transmission acoustic intensity of good interface was larger than that of defective interface. This was due to the thin layer of air existed on the defective interface that hindered the transmission of sound wave, which made the transmission acoustic intensity relatively small. So during the process of detection, the region where transmission acoustic intensity was significantly lower than other places can

  8. Research and Application of Key Technique for Mechanized Royal Jelly Production(III)---Supporting Breeding Technology with Honeybee Colony Breeding for Bionic Non-grafting Larvae Royal Jelly Production%蜂王浆机械化生产关键技术研究与应用(Ⅲ)--仿生免移虫生产蜂王浆的蜂群配套饲养技术

    Institute of Scientific and Technical Information of China (English)

    张飞; 吴小波; 颜伟玉; 王子龙; 曾志将

    2013-01-01

    For the sake of popularizing and applying the“bionic non-grafting larvae technique for royal jelly production”to apiculture production better and faster ,the authors put forward a set of honeybee breeding technology matching the“bionic non-grafting larrae technique for production of royal jelly”based on years ’ pro-duction practice .That is a series of supporting honeybee breeding technology including building comb on the hollow comb foundation ,organizing spawning group and the processes of bionic non-grafting larvae royal jelly production .The successful application of the “bionic non-grafting larvae technique for royal jelly production”will lay the foundation for large-scale royal jelly production .%为使“仿生免移虫蜂王浆技术”更好更快地推广应用于养蜂生产中,经过多年生产实践,提出与“仿生免移虫生产蜂王浆技术”相配套的蜂群饲养技术,即对空心巢础造巢脾、产卵群的组织及仿生免移虫生产蜂王浆步骤等配套蜂群饲养技术。仿生免移虫蜂王浆生产技术的成功应用,将为我国蜂王浆生产规模化奠定基础。

  9. Bionic energy system based on an air breathing chemoelectric converter (fuel cell) with biomass-derived glucose as hydrogen transfer medium and assessment of renewable glucose production; Bionisches Energiesystem auf der Basis eines luftatmenden chemoelektrischen Wandlers (Brennstoffzelle) mit Glucose aus Biomasse als Wasserstoffuebertraeger sowie Abschaetzung des Potentials an nachwachsender Glucose

    Energy Technology Data Exchange (ETDEWEB)

    Radebold, R.; Radebold, W.

    2001-07-01

    The fundamental principles and thermodynamics of the biological energy system as well as the role of glucose and H{sub 2}O{sub 2} in the photosynthesis and breathing processes are briefly explained. Transposition of the principles in a bionic energy system is discussed, and resulting engineering aspects and advantages of a bionic energy system based on renewable biomass-derived glucose are shown and compared with conventional energy systems based on fossil fuels. The potential of inland production of suitable biomass is assessed. (orig./CB) [German] Funktion und Thermodynamik des biologischen Energiesystems sowie die Rollen von Glucose und H{sub 2}O{sub 2} in Photosynthese und Atmung werden kurz erlaeutert, ueber die Umsetzung dieser Prinzipien zu einem bionischen Energiesystem wird berichtet. Technische Konsequenzen und Vorteile eines bionischen Energiesystems mit Glucose aus nachwachsender Biomasse werden im Vergleich zum heutigen technischen Energiesystems mit fossilen Brennstoffen eroertert. Eine Schaetzung des heimischen Potentials an nachwachsender, fuer diese Zwecke geeigneter Biomasse wird vorgelegt: rund die Haelfte der heutigen Nutzenergie koennte ueber ein bionisches Energiesystem bereitgestellt werden. (orig.)

  10. Bionics Sensing Intelligent Sensor Detection Technology and Its Application in Yunnan Characteristics Agricultural Products Quality Detection%仿生传感智能感官检测技术及其在云南特色农产品品质检测中的应用

    Institute of Scientific and Technical Information of China (English)

    许文方; 张海东; 李贵荣; 杨丽祥

    2013-01-01

    The concepts of machine vision technology,electric smell technology,electric taste technology three bionics sensing intelligent sensor detection technology were introduced,their function,features and application in Yunnan cured tobacco,Pu' er tea,herbal medicines and cut flowers were elaborated.The existing problems in application of bionics sensing intelligent sensor detection technology in quality detection of Yunnan characteristics agricultural products were analyzed.%介绍了机器视觉技术、电子嗅觉技术和电子味觉技术3种仿生传感智能感官检测技术的概念,阐述了其功用、特点及其在云南烤烟、普洱茶、中药材和鲜切花品质检测中的应用,同时分析了仿生传感智能感官检测技术用于云南特色农产品品质检测还存在的问题.

  11. The Use of Remote Bionic Operation Tool Removing Foreign Bodies in Distribution Line%带电清除配电线路异物的遥控仿生操作工具

    Institute of Scientific and Technical Information of China (English)

    章志钧; 孙伟; 傅正财

    2012-01-01

    As the traditional insulated tools does not meet the live working requirement of clearing foreign body in distribution lines, a remote bionic operation tool was developed, being consisted of a mechanical end of the Insulation rod, a remote control transmitter and a receiver. Just hold the tools and the foreign body can be removed easily. It can easily do the operation like grab, pull or cut to the foreign body. The operation was accurate, reducing the shake of the tools and human body, which ensured the effective insulation distance of the operating tools and kept the effective air gap between the human body and the charged body. It reduced the leakage current flowing through the human body as well as the time in live working, and improved the safety and efficiency of foreign body removal in live working of medium voltage distribution lines.%针对清除中压配电线路异物使用传统绝缘工具不能满足带电作业的状况,研发了一种遥控仿生操作工具。该工具由机械端部、绝缘杆、遥控发射器和接收机组成。在带电清除异物时,只需将遥控仿生操作工具的端部放在合适位置,即可方便地实现抓取、拽拉或剪断异物的操作,整个操作过程施力准确,减少了端部机构的抖动,确保了人体与带电体间的有效空气间隙,保证了操作工具的有效绝缘距离,降低了流经人体的泄漏电流,减少了带电作业时间,提高了中压配电线路带电清除异物作业的安全性及工作效率。

  12. Bionic Structure Design for Double Tauren EDM Machine Smooth Pillow Reinforcing Plate%双牛头电火花机床平滑枕筋板结构仿生设计

    Institute of Scientific and Technical Information of China (English)

    牛金磊; 李锻能; 丰树礼

    2013-01-01

    By using bionic principles and methods of force structure,the internal rib structure of the key moving parts-horizontal ram of some EDM machine were designed and analyzed to ensure its structural rigidity,at the same time to make the maximum light-weight. Through the analysis of the distribution pattern of leaf veins structure,combining with the force structure of the smooth pillow member,reasonable layout form of the ribs was designed. By applying SolidWorks,the simulation structure of the entity model was es-tablished,and ANSYS finite element analysis (FEA)software was used for static analysis validation and modal analysis. The research results have an important role to ensure specific stiffness of the machine’s related moving parts,to improve accuracy and the system dy-namics performance.%利用受力结构仿生的原理和方法,对某型号电火花加工机床的关键运动部件---水平滑枕的内部筋板结构进行设计分析,在保证其结构刚度的同时,最大限度地进行轻量化。通过对叶片中叶脉结构分布规律的分析、总结,结合平滑枕部件的受力结构,设计出合理的筋板布局形式。应用SolidWorks建立结构仿真实体模型,并运用ANSYS有限元分析软件进行静力学分析和模态分析验证。研究结果对于保证机床相关运动部件的比刚度、提高机床工作精度以及系统动力学性能具有重要作用。

  13. 打顶及仿生信号分子对烟草氧化胁迫的影响%Reaction of Tobacco to Oxidation Stress Induced by Topping and Bionic Signal Molecules

    Institute of Scientific and Technical Information of China (English)

    张新华; 姚忠达; 陈常伟; 查向东; 程新胜

    2011-01-01

    To investigate whether the mechanical injury on tobacco by topping induces oxidation stress, the contents of superoxide anion (O2) .hydrogen peroxide (H2O2) and malondialdehyde (MDA) and the activity of superoxide dismutase (SOD) in leaf tissue were determined and their changes were analyzed and compared with untopped control in a period of time after topping. Bionic signal molecules (BSM) was immediately applied to the plants' top after topping, and relative biochemical indexes were measured. The results showed that topping would stimulate the oxidation stress. Exogenous BSM treatment would inhibit oxidation stress induced by topping, reduce the accumulation of O2~, H2O2, MDA in tobacco leaves, and improve the activity of SOD. BSM restricted the synthesis of jasmonic acid by inhibiting oxidation stress, and further reduced the accumulation of alkaloids in topped tobacco plant.%打顶对烟草植株是一种创伤,为明确这种机械创伤是否对烟草植株形成氧化胁迫,测定了非打顶株及打顶株在打顶后一定时间内叶片组织中的超氧阴离子(O2-·)、过氧化氢(H2O2)、丙二醛(MDA)和超 氧化物歧化酶( SOD)的含量与活性,并分析了这些生化指标的变化;同时,在打顶后立即在烟株顶部涂抹仿生型信号分子BSM,测定了相关生化指标.结果表明:打顶能够激发烟草产生氧化胁迫;而外源BSM处理可以抑制打顶后烟草植株的氧化胁迫,减少了烟草叶片中O2-,H2O2,MDA的积累,SOD的活性增加,BSM是通过抑制氧化胁迫、减少了茉莉酸的合成,进而降低了打顶后烟草植株中生物碱的积累.

  14. Research on Molding Bionic Artificial Bone Scaffold Based on Shape Function%基于形函数的人工骨支架仿生建模技术研究

    Institute of Scientific and Technical Information of China (English)

    杨立军; 齐艳梅; 王丽丽

    2013-01-01

    人工骨支架在骨仿生研究中起重要作用,它不仅能代替缺损骨支撑人体,而且能够引导组织再生、增殖和功能发挥.以有限元形函数映射理论与布尔运算为基础,利用UG二次开发工具UG/Open GRIP,提出了一种仿形精度较高,通用性较强的支架建模方法:首先利用映射法将骨实体模型进行六面体网格划分,然后通过每个六面体的八个节点把规则的单元微结构负型映射得到相应的子单元负型,每个完整的子单元负型进行布尔并运算得到微孔结构负型,即内部微结构模型,最后通过骨实体外形与微结构负型进行布尔差运算获得仿形支架.以人体承力骨为研究对象,研究表明:通过有限元单元的剖分和约束方法,能高效随机地获得更自然的支架模型.%The artificial bone scaffold plays an important part in bionic artificial bone, and it not only provides support for human body, but also guides the regeneration and proliferation of tissues and displays the function. Based on the mapping theory and Boolean operation, a modeling method was put forward with higher profiling accuracy and stronger versatility through the secondary development tools of UG/Open GRIP: firstly, based on the mapping method, the solid model was meshed with the hexahedral mesh; secondly. On the basis of the acquired information of nodes, the unit microstructure was mapped into the irregular and negative microstructure, and then the internal microstructure model was established based on the boolean operation union; at last the scaffold model was gained through boolean subtraction of the internal microstructure model and the solid model. This thesis regards load bearing bone of human body as an object, and the results show that a more natural scaffold model can be achieved efficiently and randomly by using the method.

  15. 基于摆频控制的鱼群自主游动数值模拟研究%Numerical simulating of self-propelled bionic fish swimming based on tail-beat frequency control method

    Institute of Scientific and Technical Information of China (English)

    王亮

    2013-01-01

    A novel numerical method used to simulate the self-propelled fish swimming is proposed.The self-propelled state is obtained by controlling the tail-beat frequency,so the novel method is called frequency control method (FCM).The governing equation of the FCM is derived from the approximate relation between the self-propelled swimming speed and the tail-beat frequency and the Newton's second law.The new method is validated by comparing the results obtained by the FCM with those achieved by the conventional speed control method (SCM,the swimming speed of SCM is determined by the Newton's second law).Both results are consistent with each other.In addition,the convergence rate of the FCM is also discussed and the optimal parameter is suggested.Finally,a fish school consisting of three self-propelled bionic fishes as a basic element,at Re=5000,have been numerically investigated.It is revealed that the energy consumption decreases 19% and the Froude efficiency increases 36% in average,respectively.%本文提出了一种通过控制仿生鱼摆频来达到自主推进状态的数值模拟新方法(简称摆频控制法),并利用自主游动速度与摆频之间的近似关系以及牛顿第二定律推导出了摆频的控制方程.通过与传统的速度控制法(仿生鱼的自主游动速度由牛顿第二定律确定)的比较,验证了该方法的可靠性,并对影响该方法收敛速度的敏感因子进行了讨论,给出了最优参数,并通过模拟三条仿生鱼组成的鱼群基本单位在Re=5000时的自主游动,证明了摆频控制方法在鱼群自主游动数值模拟中的有效性.结果表明,鱼群整体平均节能约19%,推进效率平均提高了约36%.

  16. 液压驱动仿生多足机器人单腿设计与试验%Design and experiment of single leg of hydraulically actuated bionic multi-legged robot

    Institute of Scientific and Technical Information of China (English)

    陈志伟; 金波; 朱世强; 黄翰林; 陈刚

    2016-01-01

    In order to study the influence of the end-effector’s high speed contact with ground on the robot system when the hydraulically actuated multi-legged robot walks in a dynamic gait and realize its control as well, a single leg prototype of the bio-inspired hydraulically actuated multi-legged robot is developed. The robotic leg's structure is designed on the basis of research and analysis of the skeletons of the large dogs' hind limbs. The hip and knee cylinder layout are designed from the principle of rotating guide bar mechanism and swing guide bar mechanism, respectively. The torque of robotic leg's joint on stance phase is calculated on the basis of former biologists’ research results and the planned joint trajectory of dynamic trotting gait on stance phase. The former biologists have already researched the dynamic gait of large dogs and separately measured the ground reaction forces on individual limb of trotting dogs using a series of four force platforms; the dynamic trotting gait trajectory with a speed of 2.5 m/s is planned as composite cycloid foot trajectory on flight phase with the same body height on stance. And the composite cycloid’s foot trajectory is planned with the specifications: the stride length is 1 m, the stride height is 0.05 m, the period is 4 s, and the duty cycle is 50%. Based on the above bionic design, the mechanical parameters of the robotic single leg are determined: the length of thigh and shank is 0.35 m, the hip joint angle range is [-50°, 70°], the knee joint angle range is [-140°, -20°], the diameter of the cylinder piston is 0.02 m, the diameter of piston rod is 0.01 m, and the stroke length of the piston rod is 0.1 m. The virtual prototype of robotic single leg is designed via the three-dimensional modeling software Solidworks according to the design parameters. Furthermore, the feasibility of the parameters of the designed mechanical structure and hydraulic actuator is verified based on the dynamic vertical hopping

  17. Spatial Relationships Among Tourism Destinations Based on Bionics Theory: A Case Study of Xidi and Hongcun villages in Anhui Province%旅游目的地仿生学空间关系研究——以安徽省古村落西递、宏村为例

    Institute of Scientific and Technical Information of China (English)

    徐红罡; 薛丹

    2011-01-01

    旅游目的地之间在多重因素的影响之下,空间关系总会呈现出有别于竞争与合作关系的其他形式。研究了旅游目的地空间关系的生态学解释和旅游生态位概念,在此基础上建立仿生学空间关系数学模型,构建旅游目的地仿生学空间关系研究体系,并将新体系实际应用于案例地西递、宏村,最后得出结论:宏村的整体竞争力水平高于西递,且两村于2006—2007年间达到稳定的竞争状态并一直延续到现在。案例分析证明了旅游目的地仿生学空间关系研究对于旅游规划与管理的理论和实践意义。%In recent years, the researches on the spatial relationship of tourism destinations were halted at three directions : competition, cooperation, and cooperation-competition. However, under the influence of economic, social, and cultural factors, the spatial relationships of tourism destinations always show other different forms. The former relationship classification is so simple that it cannot deal with the complex situations. With a literature review on the domestic and abroad studies, the author found that lots of scholars began to try to explain the relationship in ecological ways. The spatial relationships between two or more destinations are described as competition, predation, symbiosis, and parasitism. " Niche", as ecological terminology, has been introduced into tourism study. The purpose of this study is to apply the bionics theory to the tourism destination and to explore new methodology for the spatial relationships of destinations qualitatively and quantitatively. Thus, this paper is composed by three parts : 1 ) the establishment of the spatial relationship models based on ecological interpretation; 2) the construction of a bionics study approach of spatial relationship among tourism destinations ; and 3 ) the application of the new approach to Xidi and Hongcun villages as a case study. After fieldwork

  18. 基于APDL和分层优化技术的高速加工中心工作台的仿生优化%Bionic optimization of high-speed machining center workbench based on APDL and hierarchical optimization techniques

    Institute of Scientific and Technical Information of China (English)

    项菲菲; 李尚平; 李健; 唐满宾; 项忠珂

    2012-01-01

    Aimed at high speed mat-Inning center high mac Inning accuracy and lightweight design require ments, two different stiffened plate structure workbenches are designed, one adopts traditional design method,the other is designed based on the bionics ;Then finite element analysis based on CAD/CAE integration technology is done;Based on APDL and hierarchical optimization techniques,dimensions of stiffened plate of workbench with obvious advantages in bionic design are optimaized to get the optimal size; Through static analyzing and modal analyzing the superiority of the optimization schemes is verified,which provide guidance for practical product ion.Through simulating,arranging,analyzing and refining the excellent properties oj biology, a new design of thinking method similar with biological features is designed.%针对高速加工中心高加工精度和轻量化的设计要求,设计了两种有不同筋板结构的工作台,一种采用传统设计方法,另一种基于仿生学的设计;基于CAD/CAE一体化技术对其进行有限元分析;基于APDL和分层优化技术对优势明显的仿生设计工作台的筋板的尺寸进行了优化,得到了筋板的最优尺寸;通过静态分析和模态分析验证了优化方案的优越性,为实际生产提供指导,通过对生物优异特性的模拟、整理、分析、提炼,从而构思设计出具有类似于生物特征的一种新的设计思维的方法.

  19. Bionic Design Methods - A practical approach

    DEFF Research Database (Denmark)

    Kepler, Jørgen Asbøll; Stokholm, Marianne Denise J.

    2004-01-01

    Nature has served as inspiration for product design throughout history. Applications range from poetic translations of form to utilization of primary functional principles. This paper describes a generally applicable design methodology for transforming natural functional principles to feasible...... product design. From a formulation of design demands, which need not necessarily be very precise, the approach continues with a study of natural objects (anaimals, plants) which are subject to the same demands. From this study, the working principle(s) are derived. This (these) are then clarified through...

  20. Bionic robot arm with compliant actuators

    Science.gov (United States)

    Moehl, Bernhard

    2000-10-01

    Traditional robotics uses non-compliant materials for all components involved in the production of movement. Elasticity is avoided as far as possible, because it leads to hazardous oscillations and makes control of precise movements very difficult. Due to this deliberate stiffness, robots are typically heavy and clumsy structures in comparison to their living counterparts (i.e. man and animals). Yet, moving systems in nature cope not only with the difficulties introduced by compliant materials, they also take advantage of the elasticity in muscles and tendons to produce smooth and even rapid movements. It is understood, that elasticity in a multi-jointed moving system requires sophisticated control mechanisms- as provided by a nervous system or a suitably programmed computer. In this contribution I shall describe a two-jointed robot with purpose-built elasticity in its actuators. This is accomplished by spiral springs places in series with a conventional electric motor and a tendon to the arm. It is shown that, with sufficiently soft elasticity, oscillations can be avoided by active oscillation damping. (Such active oscillation damping presumably also governs movement control in man and animals.) Furthermore, once the major problem has been overcome, elasticity is found to offer a wide spectrum of valuable advantages, as far as the most serious problems in traditional robotics are concerned. They are summarized by terms such as less dangerous, position tolerant, lightweight construction, controlled forces, and ballistic movements. These will be explained in detail and presented for discussion.

  1. Bionics: Biological insight into mechanical design

    OpenAIRE

    Dickinson, Michael H

    1999-01-01

    When pressed with an engineering problem, humans often draw guidance and inspiration from the natural world (1). Through the process of evolution, organisms have experimented with form and function for at least 3 billion years before the first human manipulations of stone, bone, and antler. Although we cannot know for sure the extent to which biological models inspired our early ancestors, more recent examples of biomimetic designs are well documented. For example, birds and bats played a cen...

  2. Non-Abelian BIonic Brane Intersections

    CERN Document Server

    Cook, P; Murugan, J; Cook, Paul; Koch, Robert de Mello; Murugan, Jeff

    2003-01-01

    We study "fuzzy funnel" solutions to the non-Abelian equations of motion of the D-string. Our funnel describes n^6/360 coincident D-strings ending on n^3/6 D7-branes, in terms of a fuzzy six-sphere which expands along the string. We also provide a dual description of this configuration in terms of the world volume theory of the D7-branes.

  3. Non-Abelian BIonic brane intersections

    International Nuclear Information System (INIS)

    We study 'fuzzy funnel' solutions to the non-Abelian equations of motion of the D string. Our funnel describes n6/360 coincident D-strings ending on n3/6 D7-branes, in terms of a fuzzy six-sphere which expands along the string. We also provide a dual description of this configuration in terms of the world volume theory of the D7-branes. Our work makes use of an interesting nonlinear higher dimensional generalization of the instanton equations

  4. BOWOOSS: bionic optimized wood shells with sustainability

    Science.gov (United States)

    Pohl, Göran

    2011-04-01

    In architecture, shell construction is used for the most efficient, large spatial structures. Until now the use of wood rather played a marginal role, implementing those examples of architecture, although this material offers manifold advantages, especially against the background of accelerating shortage of resources and increasing requirements concerning the energy balance. Regarding the implementation of shells, nature offers a wide range of suggestions. The focus of the examinations is on the shells of marine plankton, especially of diatoms, whose richness in species promises the discovery of entirely new construction principles. The project is targeting at transferring advantageous features of these organisms on industrial produced, modular wood shell structures. Currently a transfer of these structures in CAD - models is taking place, helping to perform stress analysis by computational methods. Micro as well as macro structures are the subject of diverse consideration, allowing to draw the necessary conclusions for an architectural design. The insights of these tests are the basis for the development of physical models on different scales, which are used to verify the different approaches. Another important aim which is promoted in the project is to enhance the competitiveness of timber construction. Downsizing of the prefabricated structural elements leads to considerable lower transportation costs as abnormal loads can be avoided as far as possible and means of transportation can be loaded with higher efficiency so that an important contribution to the sustainability in the field of architecture can also be made.

  5. Bionic ommatidia based on microlens array

    Science.gov (United States)

    Hao, Liu; Sihai, Chen; Shan, Dong; Xinjian, Yi

    2009-06-01

    A simple method is reported to manufacture a planar compound eye using a microlens array. The compound eye, inspired by insects, consists of a microlens array and a waveguide coupled with it. A microlens array with lenses of 50 μm in diameter is fabricated by melting AZ1500 photoresist and then transferring it onto SU-8. With the self-focus method applied, a waveguide array is formed, and each is exactly coupled to a lens. The formation of the waveguide is simulated using finite difference time domain (FDTD) arithmetic, resembling the ommatidia produced in our experiment. The ommatidia is also testified to astrict beam, just as the natural compound eyes do.

  6. Bionics: A Step toward Artificial Intelligence Systems

    Science.gov (United States)

    Dutton, Robert E.

    1970-01-01

    Recent developments and future prospects in the borrowing of biological principles to build problem solving relationships between human intelligence and the information storage and manipulation capacities of computers. Twenty-one references. (LY)

  7. D-BIonic Screening of Scalar Fields

    CERN Document Server

    Burrage, Clare

    2014-01-01

    We study a new screening mechanism which is present in Dirac-Born-Infeld (DBI)-like theories. A scalar field with a DBI-like Lagrangian is minimally coupled to matter. In the vicinity of sufficiently dense sources, non-linearities in the scalar dominate and result in an approximately constant acceleration on a test particle, thereby suppressing the scalar force relative to gravity. Unlike generic P(X) theories, screening happens within the regime of validity of the effective field theory, thanks to the DBI symmetry. This symmetry also allows the removal of a constant field gradient, like in galileons. Not surprisingly, perturbations around the spherically-symmetry background propagate superluminally, but we argue for a chronology protection analogous to galileons. We derive constraints on the theory parameters from tests of gravity and discuss various extensions.

  8. Torque analysis on bionic model of bamboo weevil rostrum based on ANSYS%基于ANSYS的竹象虫头管仿生模型抗扭转分析

    Institute of Scientific and Technical Information of China (English)

    许顺; 佟金; 马云海; 李默

    2016-01-01

    their morphology. The reinforcing ribs perforated several axial layers and circumferential layers along the radial direction, but its size and distribution were very randomly. From the element spectrum diagrams and nanomechanical tests, it was found that the outer layer of rostrum contained carbon (C), hydrogen (H), nitrogen (N) and oxygen (O), which are essential elements to composite chitin, and furthermore, it also contained inorganic salts like silicon (Si), magnesium (Mg) and potassium (K). And in this layer, the elasticity modulus, hardness and stiffness were 3.074 GPa, 182.254 MPa and 8.12μN/nm, respectively. The main component of axial layers was saccharides or lipid that was dependent on the chemical union of C, H and O, and its elasticity modulus, hardness and stiffness were 3.152 GPa, 121.392 MPa and 10.283μN/nm, respectively. The circumferential layers contained C, H, N, O and chlorine (Cl), and its elasticity modulus, hardness and stiffness were the highest, which were 8.645 GPa, 246.620 MPa and 19.695 μN/nm, respectively. From the measurement result, the main characteristics of bamboo weevil rostrum could be found. First, rostrum was a hollow multilayer pipe, which had nice strength and stiffness. Second, the outer layer was chitin, the axial layers consisted of sheet saccharides or lipid, and the circumferential layers contained protein and fibers. Specially, the circumferential layers had excellent mechanical capacity that made the rostrum more powerful. Third, the thickness of each axial layer changed in a certain sequence from outside to inside. In addition, the radial ribs connected several layers, which was conducive to better balance the stress and deformation on different bearing layers. Finally, the bionic multilayer pipes designed by learning the rostrum were modeled after appropriate simplification and majorization, and the torsional deformation was examined. The finite element analysis (FEA) method was applied to analyze the rationality of

  9. 用均匀设计优选栀子柏皮汤半仿生法提取的工艺条件%Optimizing the technological parameters for extracting Zhizi Baipi decoction with uniform design of semi-bionic method

    Institute of Scientific and Technical Information of China (English)

    荆汉卫; 孙秀梅; 张兆旺; 黄延亮

    2011-01-01

    [目的]优选栀子柏皮汤半仿生提取工艺条件.[方法]采用均匀设计法,在方药规格、煎提温度、煎提用水量、滤过、浓缩等条件相同的情况下,以分子量≤l 000 u提取物、栀子苷、小檗碱、甘草次酸、总生物碱为指标,综合评判,优选该方药半仿生提取的工艺条件.[结果]3煎用水的pH值依次为2.031 1、7.495 5、8.419 3,3煎总计时间为4.016 2 h.[结论]结合实际生产,确定3煎用水的pH值依次为2.0、7.5、8.5;提取时间依次为2、1、1h.%[Objective] To optimize the semi-bionic extraction condition for Zhizi Baipi decoction. [Methods] Using the uniform design and taking the extracted material ≤ 1 000 u of molecular weight, Geniposide, berberine, glycyrrhetinic acid and total alkaloids as the index and under the same condition of the prescription specifications, the temperature of decocting and extracting, the used water volume,the filtration and concentration method, the art condition for semi-bionic extraction of this prescription was analyzed comprehensively and optimazed. [Results] The pH value of the three times of decocting water was 2.031 1, 7.495 5 and 8.419 3. The total boiling time was 4.016 2 h. [Conclusion] In combination with actual production it was determined that the pH value for the three times of decocting water was 2.0, 7.5, 8.5 in tern and the extracting course was 2 h, 1 h and 1 h respectively.

  10. 多控制面机器鱼结构设计及尾鳍动力学数学模型构建%Dynamic Math Mode Building of Tail Fin and Structure Design of Control Surface Bionic Robotic-fish

    Institute of Scientific and Technical Information of China (English)

    王卫兵; 杨红伟; 晁贯良; 牛健文

    2012-01-01

    The structure of control surface biomimetic robotic-fish was designed, which included tail fin, pectoral fin, pelvic fin, and pinna dorsalis combining propulsion. On the basis of the characteristic of structure, the swimming balance of bionic robotic-fish was achieved by controlling the each part of propulsion system. The dynamic math model of tail fin of four-joint robotic-fish was built using the theory of planar wave plank and Lagrange equation. The academic base for the relation of the kinetic parameters of robotic-fish is prepared by the model.%设计了多控制面仿生机器鱼结构,包括尾鳍、胸鳍、腹鳍、背鳍的联合推进.根据其结构特点,对机器鱼推进系统的各关节进行控制从而实现仿生机器鱼前进的平衡性,主要利用二维波动板理论和Lagrange方程建立了四关节仿生机器鱼尾鳍的动力学数学模型,该模型建立了仿生机器鱼各个运动参数之间的关系.

  11. Gait Analysis on Bionic Kangaroo-hopping Robot Based on Adjustable Geared Five-linkage Mechanism%基于可调齿轮-五杆机构的仿袋鼠跳跃机器人运动步态分析

    Institute of Scientific and Technical Information of China (English)

    柴辉; 李建华; 葛文杰

    2009-01-01

    设计了一种可调齿轮-五杆仿袋鼠跳跃机器人,实现了能量的可调.利用ADAMS软件对机器人的结构参数进行了优选,按姿态调整、储能、起跳腾宅、着地复位的动作顺序对机器人一个跳跃循环过程中的运动步态进行了分析.采用简化的双质量-非线性弹簧模型对起跳条件和质心受力情况进行了分析.最后给出了仿真和实验结果,证实了设计方案的可行性.%A bionic kangaroo-hopping robot based on adjustable geared five-linkage mechanism is designed in order to realize energy adjustable. Optimal selection of structure parameter of robot is accomplished by ADAMS software. The robot gait in a hopping cycle is also analyzed by the action sequence which includes attitude adjustment, energy storage, takeoff and flight, landing and reset. Simplified double mass-nonlinear spring model is established in order to analyze the takeoff condition and the forces on centroid. At last, the simulation and experiment results are given to prove the feasibility of the design.

  12. Analysis of the Course and Efficacy of Bionics-physics Method for the Treatment of Female Patients with Mild and Moderate Stress Urinary Incontinence%仿生物理治疗女性轻、中度压力性尿失禁的疗程及疗效分析

    Institute of Scientific and Technical Information of China (English)

    阳笑; 杨静

    2014-01-01

    【目的】探讨仿生物理治疗女性轻、中度压力性尿失禁(SUI)的疗程及疗效。【方法】来本院就诊的SUI患者93例,其中轻度组62例,根据治疗意愿分为轻度1组31例,轻度2组31例;中度组31例。轻度1组应用PHENIX USB 4盆底功能治疗仪行系统仿生物理治疗1疗程(基础治疗,每次30 min ,每周2次,共15次),轻度2组及中度组予系统仿生物理治疗三疗程(巩固治疗),疗程间间隔1个月,于基础治疗后及巩固治疗一年后判定疗效。【结果】一个疗程治疗后,轻度组62例中61例(98.39%)有效,其中57例(91.94%)治愈;中度组31例中24例(77.42%)有效,19例(61.29%)治愈。轻度2组及中度组继续行巩固治疗。疗程结束后一年评估:轻度1组中25例(80.65%)仍有效,其中23例(74.19%)治愈;轻度2组30例(96.77%)有效,29例(93.55%)治愈;中度组28例(90.32%)有效,26例(83.87%)治愈。轻度组有效率及治愈率显著高于中度组( P <0.05, P <0.01);轻度2组一年有效率及治愈率均稍高于中度组,但差异均无统计学意义( P >0.05);轻度2组一年后治愈率高于轻度1组,差异有统计学意义( P <0.05)。【结论】仿生物理治疗对轻、中度SUI均能有效缓解症状甚至治愈,应用三个疗程的巩固治疗的疗效优于一个疗程的基础治疗。%[Objective] To explore the course and efficacy of bionics-physics method for the treatment of fe-male patients with mild and moderate stress urinary incontinence (SUI) .[Methods]Totally 93 patients with SUI in our hospital were divided into mild group( n=62) and moderate group( n=31) .According to treatment will ,the mild group was divided into mild I group( n =31) and mild II group( n=31) .The mild I group received bionics-physics treatment by using PHENIX USB 4 pelvic floor function

  13. PREFACE: Special section on medical bionics Special section on medical bionics

    Science.gov (United States)

    Shepherd, Robert K.

    2012-12-01

    The full text of the Preface is given in the PDF file. References [1] Nagayam B A et al 2012 J. Neural Eng. 9 065001 [2] Wise A K et al 2012 J. Neural Eng. 9 065002 [3] Davis T S et al 2012 J. Neural Eng. 9 065003 [4] Daly J et al 2012 J. Neural Eng. 9 065004 [5] Meffin H et al 2012 J. Neural Eng. 9 065005 [6] Tahayori B et al 2012 J. Neural Eng. 9 065006 [7] Mauger S J et al 2012 J. Neural Eng. 9 065007

  14. Bionic mechanics of customized cellular bio-magnesium scaffolds for large-area defects of femoral shafts and implants for orthopaedics surgery%股骨干大面积缺损多孔生物镁支架和骨科植入物的仿生力学

    Institute of Scientific and Technical Information of China (English)

    赵为民; 李秉哲; 唐六丁; Peter Paul Müler

    2014-01-01

    financial y by German Academic Exchange Service, visiting the Department of Molecule Biotechnology, German Helmholtz Center of Infection Research, Braunschweig, Germany, creating the cooperation relation to research into the project“Fundament and Application of Biomimetic Technology for Customized cellular Biomagnesium Scaffolds of Loaded Tissue Engineering Bones”, finishing the present work and“Investigation on the Nanosize and Zeta(ξ)-potential of Polyelectrolytes for Biomimetic Coating Technology”. OBJECTIVE:To focus on studying bionic mechanics between cellular scaffolds, customized for large area defects of femoral shafts, and new ingrown bones, as wel as bionic mechanics between host bones and platelike implants for orthopaedics surgery, by means of elastic mechanics and stereo-quantitative metal ographic analysis, and proposing the principle of bionic mechanics and the design criterion for above mentioned two types of problems, also some directions for research and development. METHODS:Different types of micro-volume models for two types of composites, i.e., cellular scaffolds/new-growing bones bio-composites, as wel as plate-like implants/host bones layered composites were created, as wel as different modulus mixing rules and mechanical stresses, i.e., stimuli, were presented, respectively. RESULTS AND CONCLUSION:Under the different modulus and volume fractions of scaffold materials, the mechanical stimuli of new ingrown bones are compared:(1) except cellular tantalum, the strength of cellular metal ic scaffolds/new ingrown bones composites is obviously much higher than that of original host bones, to enable resolving the problem on insufficient mechanical strengths in early period of implanting the compound between partial demineralized bone scaffolds and autogenous human bone marrow mesenchymal stem cells, as wel as other organic or inorganic scaffolds for tissue engineering. (2) The less the modulus and volume fraction of materials for cellular scaffold

  15. Bionic hand exoprosthesis – Perspectives for the future in Romania

    OpenAIRE

    Pogarasteanu, ME; Barbilian, AG

    2014-01-01

    Prosthetics is a modern area of interest and a challenge in Orthopedics. Over time, there has been a transition from an artisanal method of prosthetics production to modern concepts and materials, including a re-education through virtual reality. The conditions for an efficient fitting of a prosthesis include the necessity that the prosthesis respects the form and function of the lost limb, both anatomically and biomechanically. Prosthetics are made individually, personalized according to sex...

  16. Chip-scale hermetic feedthroughs for implantable bionics.

    Science.gov (United States)

    Guenther, Thomas; Dodds, Christopher W D; Lovell, Nigel H; Suaning, Gregg J

    2011-01-01

    Most implantable medical devices such as cochlear implants and visual prostheses require protection of the stimulating electronics. This is achieved by way of a hermetic feedthrough system which typically features three important attributes: biocompatibility with the human body, device hermeticity and density of feedthrough conductors. On the quest for building a visual neuroprosthesis, a high number of stimulating channels is required. This has encouraged new technologies with higher rates of production yield and further miniaturization. An Al(2)O(3) based feedthrough system has been developed comprising up to 20 platinum feedthroughs per square millimeter. Ceramics substrates are shown to have leak rates below 1 × 10(-12) atm × cc/s, thus exceeding the resolution limits of most commercially available leak detectors. A sheet resistance of 0.05 Ω can be achieved. This paper describes the design, fabrication process and hermeticity testing of high density feedthroughs for use in neuroprosthetic implants. PMID:22255880

  17. Bionic hand exoprosthesis--perspectives for the future in Romania.

    Science.gov (United States)

    Pogarasteanu, M E; Barbilian, A G

    2014-01-01

    Prosthetics is a modern area of interest and a challenge in Orthopedics. Over time, there has been a transition from an artisanal method of prosthetics production to modern concepts and materials, including a re-education through virtual reality. The conditions for an efficient fitting of a prosthesis include the necessity that the prosthesis respects the form and function of the lost limb, both anatomically and biomechanically. Prosthetics are made individually, personalized according to sex, age, physiological characteristics, profession and preference. In our country, thoracic limb prosthetics has a relatively short-recorded history of approximately a century, the most preeminent centers being in Iasi, Cluj and Bucharest. Currently, thoracic limb prosthetics, and particularly hand prosthetics, are in a period of development. A technique for amputation and stump reamputation called "circumferential osteoneuromioplasty" (CONM) is currently being used in the Orthopedics and Trauma Clinic of the Central Military University Emergency Hospital in Bucharest. The method was created with the purpose of obtaining distinct myoelectric signals of better quality, following the contraction of each muscle. The CONM method can be used in conjuncture with both the new hand prostheses that are currently available in Romania, and with the model that is being developed by a mixed team from the Polytechnic University in Bucharest, in collaboration with the Central Military University Emergency Hospital in Bucharest. PMID:25713630

  18. Bionics Solution to Learn the Arm Reaching with Collision Avoidance

    OpenAIRE

    Gorce, P.; Bendahan, P.

    2005-01-01

    This article presents a learning model that simulates the control of an anthropomorphic arm kinematics motion. The objective is to reach and grasp a static prototypic object placed behind different kinds of obstacle in size and position. The network, composed of two generic neural network modules, learns to combine multi-modal arm-related information (trajectory parameters) as well as obstacle-related information (obstacle size and location). Our simulation was based on the notion of Via Poin...

  19. Development of a Magnetic Attachment Method for Bionic Eye Applications.

    Science.gov (United States)

    Fox, Kate; Meffin, Hamish; Burns, Owen; Abbott, Carla J; Allen, Penelope J; Opie, Nicholas L; McGowan, Ceara; Yeoh, Jonathan; Ahnood, Arman; Luu, Chi D; Cicione, Rosemary; Saunders, Alexia L; McPhedran, Michelle; Cardamone, Lisa; Villalobos, Joel; Garrett, David J; Nayagam, David A X; Apollo, Nicholas V; Ganesan, Kumaravelu; Shivdasani, Mohit N; Stacey, Alastair; Escudie, Mathilde; Lichter, Samantha; Shepherd, Robert K; Prawer, Steven

    2016-03-01

    Successful visual prostheses require stable, long-term attachment. Epiretinal prostheses, in particular, require attachment methods to fix the prosthesis onto the retina. The most common method is fixation with a retinal tack; however, tacks cause retinal trauma, and surgical proficiency is important to ensure optimal placement of the prosthesis near the macula. Accordingly, alternate attachment methods are required. In this study, we detail a novel method of magnetic attachment for an epiretinal prosthesis using two prostheses components positioned on opposing sides of the retina. The magnetic attachment technique was piloted in a feline animal model (chronic, nonrecovery implantation). We also detail a new method to reliably control the magnet coupling force using heat. It was found that the force exerted upon the tissue that separates the two components could be minimized as the measured force is proportionately smaller at the working distance. We thus detail, for the first time, a surgical method using customized magnets to position and affix an epiretinal prosthesis on the retina. The position of the epiretinal prosthesis is reliable, and its location on the retina is accurately controlled by the placement of a secondary magnet in the suprachoroidal location. The electrode position above the retina is less than 50 microns at the center of the device, although there were pressure points seen at the two edges due to curvature misalignment. The degree of retinal compression found in this study was unacceptably high; nevertheless, the normal structure of the retina remained intact under the electrodes. PMID:26416723

  20. Piezoelectric Pump Used in Bionic Underwater Propulsion Unit

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A new piezoelectric pump can pump liquid either forward or backward and adjust the flow rate. Thus an object can be driven forward or backward at different speeds. The driver of the pump, a circular piezoelectric plate, is modelled by Finite Element Method (FEM) in ANSYS and its performance is simulated and analyzed. The pump gives the best performance when the driving signals of the inlet and outlet valves have a bigger duty cycle and the plate has a higher voltage applied.

  1. Advances in Propulsive Bionic Feet and Their Actuation Principles

    OpenAIRE

    Cherelle, Pierre; Mathijssen, Glenn; Wang, Qining; Vanderborght, Bram; lefeber, Dirk

    2014-01-01

    In the past decades, researchers have deeply studied pathological and nonpathological gait to understand the human ankle function during walking. These efforts resulted in the development of new lower limb prosthetic devices aiming at raising the 3C-level (control, comfort, and cosmetics) of amputees. Thanks to the technological advances in engineering and mechatronics, challenges in the field of prosthetics have become an important source of interest for roboticists. Currently, most of the b...

  2. Bionic Duplication of Fresh Navodon septentrionalis Fish Surface Structures

    Directory of Open Access Journals (Sweden)

    Bing Qu

    2011-01-01

    Full Text Available Biomimetic superhydrophobic surface was fabricated by replicating topography of the fresh fish skin surface of Navodon septentrionalis with polydimethylsiloxane (PDMS elastomer. A two-step replicating method was developed to make the surface structure of the fresh fish skin be replicated with high fidelity. After duplication, it was found that the static contact angle of the replica was as large as 173°. Theoretic analysis based on Young's and Cassie-Baxter (C-B model was performed to explain the relationship between structure and hydrophobicity.

  3. Biooniline arhitektuur = Bionic Architecture / Mihkel Tüür

    Index Scriptorium Estoniae

    Tüür, Mihkel

    2008-01-01

    Autori arvates on meil tohutult õppida, jõudmaks ruumilises ja materiaalses efektiivsuses elementaarsele tasemele võrreldes loodusega. Looduses leiduvate ruumiliste struktuuride uurimine arhitektuuri rikastamiseks viib äratundmiseni tänapäeva arhitektuuri materjale raiskavast loomusest

  4. The bionic eye (electronic visual prosthesis): a review.

    Science.gov (United States)

    Suaning, G J; Lovell, N H; Schindhelm, K; Coroneo, M T

    1998-08-01

    The concept of a visual prosthesis for the blind or partially sighted is not a new one. Indeed, for more than three decades this technology based treatment for blindness has appeared imminent. Despite the concerted efforts of numerous physicians, scientists and engineers, the successful application of a useful visual prosthesis remains elusive. The present review will endeavour to describe past efforts, investigate the present state of the art and indicate the obstacles that must be overcome in order to bring an electronic visual prosthesis to fruition. PMID:9717748

  5. Building the Bionic Eye: An Emerging Reality and Opportunity

    OpenAIRE

    Merabet, Lotfi B.

    2011-01-01

    Once the topic of folklore and science fiction, the notion of restoring vision to the blind is now approaching a tractable reality. Technological advances have inspired numerous multidisciplinary groups worldwide to develop visual neuroprosthetic devices that could potentially provide useful vision and improve the quality of life of profoundly blind individuals. While a variety of approaches and designs are being pursued, they all share a common principle of creating visual percepts through t...

  6. Building the bionic eye: an emerging reality and opportunity.

    Science.gov (United States)

    Merabet, Lotfi B

    2011-01-01

    Once the topic of folklore and science fiction, the notion of restoring vision to the blind is now approaching a tractable reality. Technological advances have inspired numerous multidisciplinary groups worldwide to develop visual neuroprosthetic devices that could potentially provide useful vision and improve the quality of life of profoundly blind individuals. While a variety of approaches and designs are being pursued, they all share a common principle of creating visual percepts through the stimulation of visual neural elements using appropriate patterns of electrical stimulation. Human clinical trials are now well underway and initial results have been met with a balance of excitement and cautious optimism. As remaining technical and surgical challenges continue to be solved and clinical trials move forward, we now enter a phase of development that requires careful consideration of a new set of issues. Establishing appropriate patient selection criteria, methods of evaluating long-term performance and effectiveness, and strategies to rehabilitate implanted patients will all need to be considered in order to achieve optimal outcomes and establish these devices as viable therapeutic options. PMID:21763515

  7. Image Compression and Resizing for Retinal Implant in Bionic Eye

    OpenAIRE

    N.Sharmili; P.S.Ramaiah; G.Swamynadhan

    2011-01-01

    One field where computer-related Image processing technology shows great promise for the future isbionic implants such as Cochlear implants, Retinal implants etc.. Retinal implants are being developedaround the world in hopes of restoring useful vision for patients suffering from certain types of diseaseslike Age-related Macular Degeneration (AMD) and Retinitis Pigmentosa (RP). In these diseases thephotoreceptor cells slowly degenerated, leading to blindness. However, many of the inner retina...

  8. Medicalization: Current Concept and Future Directions in a Bionic Society

    OpenAIRE

    Antonio Maturo

    2012-01-01

    The article illustrates the main features of the concept of medicalization, starting from its theoretical roots. Although it is the process of extending the medical gaze on human conditions, it appears that medicalization cannot be strictly connected to medical imperialism anymore. Other "engines" of medicalization are influential: consumers, biotechnology and managed care. The growth of research and theoretical reflections on medicalization has led to the proposal of other parallel concepts ...

  9. Computer-Assisted Law Instruction: Clinical Education's Bionic Sibling

    Science.gov (United States)

    Henn, Harry G.; Platt, Robert C.

    1977-01-01

    Computer-assisted instruction (CAI), like clinical education, has considerable potential for legal training. As an initial Cornell Law School experiment, a lesson in applying different corporate statutory dividend formulations, with a cross-section of balance sheets and other financial data, was used to supplement regular class assignments.…

  10. Bionic hand : replicating the human hand through 3D printing

    OpenAIRE

    Gulbrandsen, Stefan Meiforth

    2015-01-01

    Norsk Denne master oppgaven utforsker mulighetene til en av de mest moderne 3D printerne til dags dato. Ved å lage en hån med dens ligamenter, sener og bein system viser den hvor langt det er mulig å presse teknologien mot å utvikle biologisk inspirerte proteser og robotikk. Ved å gjøre dette kan den inspirere andre til å lage mer naturlige strømgjerrige proteser.

  11. Bionic Control of Cheetah Bounding with a Segmented Spine

    Directory of Open Access Journals (Sweden)

    Chunlei Wang

    2016-01-01

    Full Text Available A cheetah model is built to mimic real cheetah and its mechanical and dimensional parameters are derived from the real cheetah. In particular, two joints in spine and four joints in a leg are used to realize the motion of segmented spine and segmented legs which are the key properties of the cheetah bounding. For actuating and stabilizing the bounding gait of cheetah, we present a bioinspired controller based on the state-machine. The controller mainly mimics the function of the cerebellum to plan the locomotion and keep the body balance. The haptic sensor and proprioception system are used to detect the trigger of the phase transition. Besides, the vestibular modulation could perceive the pitching angle of the trunk. At last, the cerebellum acts as the CPU to operate the information from the biological sensors. In addition, the calculated results are transmitted to the low-level controller to actuate and stabilize the cheetah bounding. Moreover, the delay feedback control method is employed to plan the motion of the leg joints to stabilize the pitching motion of trunk with the stability criterion. Finally, the cyclic cheetah bounding with biological properties is realized. Meanwhile, the stability and dynamic properties of the cheetah bounding gait are analyzed elaborately.

  12. Nanocarbon-Coated Porous Anodic Alumina for Bionic Devices

    OpenAIRE

    Morteza Aramesh; Wei Tong; Kate Fox; Ann Turnley; Dong Han Seo; Steven Prawer; Kostya (Ken) Ostrikov

    2015-01-01

    A highly-stable and biocompatible nanoporous electrode is demonstrated herein. The electrode is based on a porous anodic alumina which is conformally coated with an ultra-thin layer of diamond-like carbon. The nanocarbon coating plays an essential role for the chemical stability and biocompatibility of the electrodes; thus, the coated electrodes are ideally suited for biomedical applications. The corrosion resistance of the proposed electrodes was tested under extreme chemical conditions, su...

  13. Bionic Control of Cheetah Bounding with a Segmented Spine

    OpenAIRE

    Chunlei Wang; Shigang Wang

    2016-01-01

    A cheetah model is built to mimic real cheetah and its mechanical and dimensional parameters are derived from the real cheetah. In particular, two joints in spine and four joints in a leg are used to realize the motion of segmented spine and segmented legs which are the key properties of the cheetah bounding. For actuating and stabilizing the bounding gait of cheetah, we present a bioinspired controller based on the state-machine. The controller mainly mimics the function of the cerebellum to...

  14. Design and Testing of a Bionic Dancing Prosthesis

    OpenAIRE

    Rouse, Elliott J.; Nathan C Villagaray-Carski; Emerson, Robert W.; Herr, Hugh M

    2015-01-01

    Traditionally, prosthetic leg research has focused on improving mobility for activities of daily living. Artistic expression such as dance, however, is not a common research topic and consequently prosthetic technology for dance has been severely limited for the disabled. This work focuses on investigating the ankle joint kinetics and kinematics during a Latin-American dance to provide unique motor options for disabled individuals beyond those of daily living. The objective of this study was ...

  15. Bionic Duplication of Fresh Navodon septentrionalis Fish Surface Structures

    OpenAIRE

    Xiaohui Zhou; Zhongze Gu; Chao Pan; Lanlan Pan; Jing Wang; Bing Qu

    2011-01-01

    Biomimetic superhydrophobic surface was fabricated by replicating topography of the fresh fish skin surface of Navodon septentrionalis with polydimethylsiloxane (PDMS) elastomer. A two-step replicating method was developed to make the surface structure of the fresh fish skin be replicated with high fidelity. After duplication, it was found that the static contact angle of the replica was as large as 173°. Theoretic analysis based on Young's and Cassie-Baxter (C-B) model was performed to expla...

  16. Image Compression and Resizing for Retinal Implant in Bionic Eye

    Directory of Open Access Journals (Sweden)

    N.Sharmili

    2011-06-01

    Full Text Available One field where computer-related Image processing technology shows great promise for the future isbionic implants such as Cochlear implants, Retinal implants etc.. Retinal implants are being developedaround the world in hopes of restoring useful vision for patients suffering from certain types of diseaseslike Age-related Macular Degeneration (AMD and Retinitis Pigmentosa (RP. In these diseases thephotoreceptor cells slowly degenerated, leading to blindness. However, many of the inner retinalneurons that transmit signals from the photoreceptors to the brain are preserved to a large extent for aprolonged period of time. The Retinal Prosthesis aims to provide partial vision by electricallyactivating the remaining cells of the retina. The Epi retinal prosthesis system is composed of twounits, extra ocular unit and intraocular implant. The two units are connected by a telemetric inductivelink. The Extraocular unit consists of a CCD camera, an image processor, an encoder, and a transmitterbuilt on the eyeglass. High-resolution image from a CCD camera is reduced to lower resolutionmatching the array of electrodes by image processor, which is then encoded into bit stream. Eachelectrode in an implant corresponds to one pixel in an image. The bit stream is modulated on a 22 MHzcarrier and then transmitted wirelessly to the inside implant. This paper mainly discusses twoapproaches in image processing which reduces the size of the image without loss of the object detectionrate to that of the original image. One is about the related image processing algorithms include imageresizing, color erasing, edge enhancement and edge detection. Second one is to generate the saliencymap for an image.

  17. 京尼平交联仿骨结构诱导性骨组织工程支架材料的制备与表征%Preparation and characterization of inducible bone repair composite scaffold with genipin-crosslinked bionic bone structure

    Institute of Scientific and Technical Information of China (English)

    李根; 李文杰; 唐俊杰; 王九娜; 赵玲; 秦文; 赵兴绪; 赵红斌

    2015-01-01

    BACKGROUND:Although there is a certain progress in the preparation of tissue-engineered bone tissue using a variety of materials, some deficiencies have appeared such as mismatching between scaffold degradation rate and new bone formation rate, slow tissue growth, toxic metabolites. OBJECTIVE:To build a new type of inducible bone repair composite scaffold with bionic bone structurematerials and to evaluate its physicochemical and biological properties. METHODS: Icarin encapsulated by chitosan was used to prepare drug-loaded microspheres, and the drug release rate of the microspheres was detected. Chitosan microspheres were mixed with colagen to build the core part of scaffold materials. Hydroxyapatite (HA), polycaprolactone (PCL) and colagen were mixed in hexafluoride isopropanol (HFIP) to prepare the HA/PCL/colagen outer part of composite scaffold material at the rate of 0:3:3, 1:3:3, 2:3:3, 3:3:3. Each proportional electrospinning was used for one layer, and finaly the 4-layer outer tube of the scaffold was produced. The tube core and outer tube were crosslinked by 1% genipin. Universal material testing machine, surface contact angle meter, infrared spectroscopy, scanning electron microscope, water absorption, permeability, porosity,in vitro degradation tests for cross-linked and uncross-linked were used to observe the structure and characteristics of tubular materials. Bone marrow mesenchymal stem cels were seeded on the surface of cross-linked and uncross-linked bone repair materials to evaluate the biocompatibility of the scaffolds. Cross-linked and uncross-linked bone repair materials were implanted subcutaneously into Wistar rats to evaluate the histocompatibility of the scaffolds. RESULTS AND CONCLUSION:The drug in the scaffold had a suitable release; the bone scaffold material had good uniformity, and cross-linked scaffolds materials had better mechanical properties, water absorption and permeability than the uncross-linked(P   目的:构建一种

  18. FY 1997 research and development of fusion domains. Part 2. Studies on bionic design; 1997 nendo seika hokokusho (yugo ryoiki kenkyu kaihatsu). 1. Bionic design no kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-03-01

    Studies were conducted on actuator function in bio materials, cells, structures, and living organisms, and on structuring a biological molecule machine. In the study on soft biological structures, biological compatibility of artificial glass bodies using ultra-polymeric PVA was found very high, raising expectation on feasibility of their practical use. Three-dimensional structure of glass bodies was made clear for the first time in the world. As a result of separating and purifying cells from a liver for the first time in the world, it was indicated that excellent proliferation performance and differentiation into cells are shown. With regard to hydroxyapatite in hard biological structure such as bones and teeth, single crystals were synthesized, and growth rate on the surface C was measured successfully. For molecular motors, studies are being performed on functions of twin-head structure in biological protein enzyme. In molecule structuring, studies were conducted on preparation of a hydrogenase LB membrane as an electric-hydrogen energy conversion element, and structuring of protein molecular structure using gene recombination. 69 refs., 37 figs., 8 tabs.

  19. Restudies on Body Surface of Dung Beetle and Application of Its Bionics Flexible Technique

    Institute of Scientific and Technical Information of China (English)

    Jiurong Sun; Jianqiao Li; Hong Cheng; Zhendong Dai; Luquan Ren

    2004-01-01

    A scanning electron microscope was used to observe the structures of the setae on the surface of a dung beetle Copris ochus, Motschulsky. There are lots of setae on the body surface, especially on the ventral part surface and lateral to the legs which are different in size, arrangement and shape. These setae have different lengths and many thorns on the whole seta. The top ends of these setae stand up without furcations which direct uprightly towards the surface of the touched soil. By the method of removing these setae, getting the insect weight before and after digging into the dung we affirm farther that the setae on the beetle body surface form the anti-stick and non-adherent gentle interface. The soil machines and components made by imitating the gentle body surface of beetles have favorable non-adherent results.

  20. Bionics and Structural Biology: A Novel Approach for Bio-energy Production

    Institute of Scientific and Technical Information of China (English)

    C. Karthikeyan; R. Krishnan; S. Adline Princy

    2008-01-01

    Cellular metabolism is a very complex process. The biochemical pathways are fundamental structures of biology. These pathways possess a number of regeneration steps which facilitate energy shuttling on a massive scale. This facilitates the biochemical pathways to sustain the energy currency of the cells. This concept has been mimicked using electronic circuit components and it has been used to increase the efficiency of bio-energy generation. Six of the carbohydrate biochemical pathways have been chosen in which glycolysis is the principle pathway. All the six pathways are interrelated and coordinated in a complex manner. Mimic circuits have been designed for all the six biochemical pathways. The components of the metabolic pathways such as enzymes, cofactors etc., are substituted by appropriate electronic circuit components. Enzymes arc related to the gain of transistors by the bond dissociation energies of enzyme-substrate molecules under consideration. Cofactors and coen-zymes are represented by switches and capacitors respectively. Resistors are used for proper orientation of the circuits. The energy obtained from the current methods employed for the decomposition of organic matter is used to trigger the mimic circuits. A similar energy shuttle is observed in the mimic circuits and the percentage rise for each cycle of circuit functioning is found to be 78.90. The theoretical calculations have been made using a sample of domestic waste weighing 1.182 kg. The calculations arrived at finally speak of the efficiency of the novel methodology employed.

  1. 产品仿生设计探究%Search on bionics product design

    Institute of Scientific and Technical Information of China (English)

    刘青春; 何霞

    2006-01-01

    从产品自身的各要素来探究仿生设计的应用,相应地表现为对自然界万事万物的形、色、音、功能、结构等为研究对象,同时结合仿生学的研究成果,运用实例进行深入阐释,分析和探讨这一新的设计方法和理念.形成产品仿生设计系统观,为产品设计提供了新的思路和借鉴手法.

  2. Infrared-based blink-detecting glasses for facial pacing: toward a bionic blink.

    Science.gov (United States)

    Frigerio, Alice; Hadlock, Tessa A; Murray, Elizabeth H; Heaton, James T

    2014-01-01

    IMPORTANCE Facial paralysis remains one of the most challenging conditions to effectively manage, often causing life-altering deficits in both function and appearance. Facial rehabilitation via pacing and robotic technology has great yet unmet potential. A critical first step toward reanimating symmetrical facial movement in cases of unilateral paralysis is the detection of healthy movement to use as a trigger for stimulated movement. OBJECTIVE To test a blink detection system that can be attached to standard eyeglasses and used as part of a closed-loop facial pacing system. DESIGN, SETTING, AND PARTICIPANTS Standard safety glasses were equipped with an infrared (IR) emitter-detector unit, oriented horizontally across the palpebral fissure, creating a monitored IR beam that became interrupted when the eyelids closed, and were tested in 24 healthy volunteers from a tertiary care facial nerve center community. MAIN OUTCOMES AND MEASURES Video-quantified blinking was compared with both IR sensor signal magnitude and rate of change in healthy participants with their gaze in repose, while they shifted their gaze from central to far-peripheral positions, and during the production of particular facial expressions. RESULTS Blink detection based on signal magnitude achieved 100% sensitivity in forward gaze but generated false detections on downward gaze. Calculations of peak rate of signal change (first derivative) typically distinguished blinks from gaze-related eyelid movements. During forward gaze, 87% of detected blink events were true positives, 11% were false positives, and 2% were false negatives. Of the 11% false positives, 6% were associated with partial eyelid closures. During gaze changes, false blink detection occurred 6% of the time during lateral eye movements, 10% of the time during upward movements, 47% of the time during downward movements, and 6% of the time for movements from an upward or downward gaze back to the primary gaze. Facial expressions disrupted sensor output if they caused substantial squinting or shifted the glasses. CONCLUSIONS AND RELEVANCE Our blink detection system provides a reliable, noninvasive indication of eyelid closure using an invisible light beam passing in front of the eye. Future versions will aim to mitigate detection errors by using multiple IR emitter-detector units mounted on glasses, and alternative frame designs may reduce shifting of the sensors relative to the eye during facial movements. PMID:24699708

  3. Bionic design on the model of dragonfly%仿生蜻蜓机构设计

    Institute of Scientific and Technical Information of China (English)

    郭鹏; 申功炘; 姚大鹏

    2010-01-01

    为了研究蜻蜓拍动双翼飞行时产生的流场结构.根据以往的观测结果,设计制作了能够精确模拟蜻蜓翼运动的仿生机构,用于蜻蜓高升力机制的流体力学实验研究.经测试表明,该机构可精确模拟蜻蜓翼运动,且运动重复性高,完全满足蜻蜓仿生流体力学实验要求.

  4. Bionics-Based Approach for Object Tracking to Implementin Robot Applications

    OpenAIRE

    Hussam K. Abdul-Ameer

    2010-01-01

    In this paper, an approach for object tracking that is inspired from human oculomotor system is proposed and verified experimentally. The developed approach divided into two phases, fast tracking or saccadic phase and smooth pursuit phase. In the first phase, the field of the view is segmented into four regions that are analogue to retinal periphery in the oculomotor system. When the object of interest is entering these regions, the developed vision system responds by changing the values of t...

  5. Evidence of Uncoupling between Renal Dysfunction and Injury in Cardiorenal Syndrome: Insights from the BIONICS Study

    OpenAIRE

    Legrand, Matthieu; De Berardinis, Benedetta; Gaggin, Hanna K.; Magrini, Laura; Belcher, Arianna; Zancla, Benedetta; Femia, Alexandra; Simon, Mandy; Motiwala, Shweta; Sambhare, Rasika; Di Somma, Salvatore; Mebazaa, Alexandre; Vaidya, Vishal S.; Januzzi, James L.; (GREAT), from the Global Research on Acute Conditions Team

    2014-01-01

    Objective: The objective of the study was to assess urinary biomarkers of renal injury for their individual or collective ability to predict Worsening renal function (WRF) in patients with acutely decompensated heart failure (ADHF). Methods: In a prospective, blinded international study, 87 emergency department (ED) patients with ADHF were evaluated with biomarkers of cardiac stretch (B type natriuretic peptide [BNP] and its amino terminal equivalent [NT-proBNP], ST2), biomarkers of renal fun...

  6. Design of a Bionic Cilia MEMS three-dimensional vibration sensor

    International Nuclear Information System (INIS)

    A biomimetic three-dimensional piezoresistive vibration sensor based on MEMS technology is reported. The mechanical properties of the sensor are analyzed and the static and dynamic characteristics of the sensor are simulated by ANSYS Workbench 12.0. The structure was made by MEMS processes including lithography, ion implantation, PECVD, etching, etc. Finally, the sensor is tested by using a TV5220 sensor auto calibration system. The results show that the lowest sensitivity of the sensor is 394.7 μV/g and can reach up to 460.2 μV/g, and the dimension coupling is less than 0.6152%, and the working frequency range is 0–1000 Hz. (semiconductor devices)

  7. Bionic electrospun ultrafine fibrous poly(L-lactic acid) scaffolds with a multi-scale structure

    International Nuclear Information System (INIS)

    Poly(L-lactic acid) (PLLA) tissue engineering scaffolds with porous inner structures of individual fibers and controllable architectures were successfully fabricated from the homogeneous polymer-solvent-nonsolvent system (PLLA, CH2Cl2 and DMF) by a single capillary electrospinning with certain conductive patterned templates as fiber collectors. PLLA was dissolved in dimethylformamide (DMF) and methylene chloride (CH2Cl2) mixed solvent with different ratios. Semi-hollow fiber with porous inner structure and compact shell wall was formed by controlling the content of DMF in the mixed solvents. It is believed that the phase separation should be the key origin for the formation of this microstructure. In order to mimic the natural extracellular matrix (ECM) with a specific structure, conductive patterned collectors were designed and employed to manufacture PLLA ultrafine fibrous scaffolds with three-dimensional architectures. We believe these kinds of multi-scale biodegradable fibrous scaffolds with specific microstructure and macro-architectures could make the electrospun fibrous scaffold better mimic the natural extracellular matrix to satisfy tissue engineering.

  8. Proof of Concept: Model Based Bionic Muscle with Hyperbolic Force-Velocity Relation

    OpenAIRE

    Haeufle, D. F. B.; M. Günther; Blickhan, R; Schmitt, S.

    2012-01-01

    Recently, the hyperbolic Hill-type force-velocity relation was derived from basic physical components. It was shown that a contractile element CE consisting of a mechanical energy source (active element AE), a parallel damper element (PDE), and a serial element (SE) exhibits operating points with hyperbolic force-velocity dependency. In this paper, a technical proof of this concept was presented. AE and PDE were implemented as electric motors, SE as a mechanical spring. The force-velocity rel...

  9. Proof of Concept: Model Based Bionic Muscle with Hyperbolic Force-Velocity Relation

    Directory of Open Access Journals (Sweden)

    D. F. B. Haeufle

    2012-01-01

    Full Text Available Recently, the hyperbolic Hill-type force-velocity relation was derived from basic physical components. It was shown that a contractile element CE consisting of a mechanical energy source (active element AE, a parallel damper element (PDE, and a serial element (SE exhibits operating points with hyperbolic force-velocity dependency. In this paper, a technical proof of this concept was presented. AE and PDE were implemented as electric motors, SE as a mechanical spring. The force-velocity relation of this artificial CE was determined in quick release experiments. The CE exhibited hyperbolic force-velocity dependency. This proof of concept can be seen as a well-founded starting point for the development of Hill-type artificial muscles.

  10. A bridge between unified cosmic history by $f(R)$-gravity and BIonic system

    CERN Document Server

    Sepehri, Alireza; Setare, Mohammad Reza

    2015-01-01

    Recently, the cosmological deceleration-acceleration transition redshift in $f(R)$ gravity has been considered in order to address consistently the problem of cosmic evolution. It is possible to show that the deceleration parameter changes sign at a given redshift according to observational data. Furthermore, a $f(R)$ gravity cosmological model can be constructed in brane-antibrane system starting from the very early universe and accounting for the cosmological redshift at all phases of cosmic history, from inflation to late time acceleration. Here we propose a $f(R)$ model where transition redshifts correspond to inflation-deceleration and deceleration-late time acceleration transitions starting froma BIon system. At the point where the universe was born, due to the transition of $k$ black fundamental strings to the BIon configuration, the redshift is approximately infinity and decreases with reducing temperature ($z\\sim T^{2}$). The BIon is a configuration in flat space of a universe-brane and a parallel an...

  11. A bridge between unified cosmic history by $f(R)$-gravity and BIonic system

    OpenAIRE

    Sepehri, Alireza; Capozziello, Salvatore; Setare, Mohammad Reza

    2015-01-01

    Recently, the cosmological deceleration-acceleration transition redshift in $f(R)$ gravity has been considered in order to address consistently the problem of cosmic evolution. It is possible to show that the deceleration parameter changes sign at a given redshift according to observational data. Furthermore, a $f(R)$ gravity cosmological model can be constructed in brane-antibrane system starting from the very early universe and accounting for the cosmological redshift at all phases of cosmi...

  12. A new method for preparing bionic multi scale superhydrophobic functional surface on X70 pipeline steel

    Science.gov (United States)

    Yu, Sirong; Wang, Xiaolong; Wang, Wei; Yao, Qiang; Xu, Jun; Xiong, Wei

    2013-04-01

    The hydrophobic property of a rough surface with a low free energy coating was theoretically analyzed in this paper. In order to obtain a superhydrophobic surface, a rough surface morphology must be formed in addition to the low free energy coating on the surface. Through the shot blasting, chemical etching with concentrated hydrochloric acid, and low free energy modification with myristic acid ethanol solution, the superhydrophobic surface was obtained on X70 pipeline steel. The better process parameters for preparing superhydrophobic surface on X70 pipeline steel were obtained. The diameter of the stainless steel shot used in the shot blasting was 0.8-1.0 mm. The concentration of hydrochloric acid was 6 mol/L. The chemical etching time was 320 min. The concentration of myristic acid ethanol solution was 0.1 mol/L. The soaking time in myristic acid ethanol solution was 72 h. After X70 pipeline steel surface was treated using the process parameters mentioned above, the biggest contact angle between the specimen surface and distilled water was 153.5°, and the sliding angle was less than 5°.

  13. AN ENTROPIC OPTIMIZATION TECHNIQUE IN HETEROGENEOUS GRID COMPUTING USING BIONIC ALGORITHMS

    OpenAIRE

    Saad M. Darwish; Adel A. El-zoghabi; Moustafa F. Ashry

    2015-01-01

    The wide usage of the Internet and the availability of powerful computers and high-speed networks as lowcost commodity components have a deep impact on the way we use computers today, in such a way that these technologies facilitated the usage of multi-owner and geographically distributed resources to address large-scale problems in many areas such as science, engineering, and commerce. The new paradigm of Grid computing has evolved from these researches on these topics. Performan...

  14. Experimental Observation of the Skeletal Adaptive Repair Mechanism and Bionic Topology Optimization Method

    OpenAIRE

    Kaysar Rahman; Mamtimin Geni; Mamatjan Mamut; Nijat Yusup; Muhtar Yusup

    2014-01-01

    Bone adaptive repair theory considers that the external load is the direct source of bone remodeling; bone achieves its maintenance by remodeling some microscopic damages due to external load during the process. This paper firstly observes CT data from the whole self-repairing process in bone defects in rabbit femur. Experimental result shows that during self-repairing process there exists an interaction relationship between spongy bone and enamel bone volume changes of bone defect, that is w...

  15. Kinematics Modeling and Simulation of a Bionic Fish Tail System Based on Linear Hypocycloid

    Directory of Open Access Journals (Sweden)

    Shu-yan Wang

    2015-01-01

    Full Text Available Kinematics and simulation study on a two-joint linear hypocycloid tail driving system composed of a special planetary gear system and a linkage mechanism are conducted in this paper. First, the composition and working principle of the linear hypocycloid tail transmission system are introduced and analyzed. Second, the kinematics study on the transmission mechanism is conducted with graphical method of vector equation. The relationships between the caudal peduncle stroke, the tail fin swing angle, and the phase difference with structure parameters are studied, and further optimization of structure sizes (i.e., linkage length, sun gear’s diameter, the intersection angle between planet gears, etc. is developed. At last, simulation and comparative study on a biofish in sample parameters with a live fish of Carp is conducted in MATLAB. The study would serve for underwater vehicles thruster design and its mechanism.

  16. Evaluation of Arm Processor-based Bionic Intelligent Controller for a Buck-boost Converte

    Directory of Open Access Journals (Sweden)

    M.V. Mini

    2015-07-01

    Full Text Available This study focuses on performance-comparison of different tuning methods for a PI controller applied to a buck-boost converter. Comparison between the controllers is made by analysis of design methodology implementation issues and empirically measured performance. Design of PI controller is based on frequency response of the converter. The optimization of PI controller is based on ant colony algorithm. Experimental results show that, tuning the PI controller using ACO algorithm gave better performance than the conventional algorithm. This is mainly due to the fact ACO is capable of reducing the overshoot without oscillation.

  17. Experimental research and identification of mine fire by using bionic smell sensors array

    Energy Technology Data Exchange (ETDEWEB)

    Yang Hong-min; Luo Hai-zhu [Henan Polytechnic University, Jiaozuo (China). Institute of Safety Science and Engineering

    2007-08-15

    The paper discusses the present situation of smell identification technology and give a brief account of kinds of smell sensors and their development. The sensitivity of the smell sensors array to different odors, the identification mechanism of different odor source substances and their mixture ratio were studied. The change of background value with working conditions underground and its influence on smell sensors were studied. Results indicate that the small sensors array can identify the kinds of mine fire, the burning objects, and the mixing ratio, based on the ANN. 5 refs., 6 figs.

  18. Bionics in textiles: flexible and translucent thermal insulations for solar thermal applications.

    Science.gov (United States)

    Stegmaier, Thomas; Linke, Michael; Planck, Heinrich

    2009-05-13

    Solar thermal collectors used at present consist of rigid and heavy materials, which are the reasons for their immobility. Based on the solar function of polar bear fur and skin, new collector systems are in development, which are flexible and mobile. The developed transparent heat insulation material consists of a spacer textile based on translucent polymer fibres coated with transparent silicone rubber. For incident light of the visible spectrum the system is translucent, but impermeable for ultraviolet radiation. Owing to its structure it shows a reduced heat loss by convection. Heat loss by the emission of long-wave radiation can be prevented by a suitable low-emission coating. Suitable treatment of the silicone surface protects it against soiling. In combination with further insulation materials and flow systems, complete flexible solar collector systems are in development. PMID:19376769

  19. Eating Disorders Seen from a Bionic Perspective: Developing a scale to measure the family culture.

    OpenAIRE

    Med Hafsi

    2004-01-01

    In the present study the author developed a hypothesis concerning theetiology of anorexia nervosa (AN). Based on Bion (1961)'s theory ongroups, especially the protomental system hypothesis, he postulated that thecause of AN has to be sought in two sources: family dynamics, and anindividual predisposition. That is, the author postulates that AN is the resultsof both 1) a rigid interaction between WG and baF, which leads to thefrustration of dependency needs with in the family, and 2) the anore...

  20. AN ENTROPIC OPTIMIZATION TECHNIQUE IN HETEROGENEOUS GRID COMPUTING USING BIONIC ALGORITHMS

    Directory of Open Access Journals (Sweden)

    Saad M. Darwish

    2015-12-01

    Full Text Available The wide usage of the Internet and the availability of powerful computers and high-speed networks as lowcost commodity components have a deep impact on the way we use computers today, in such a way that these technologies facilitated the usage of multi-owner and geographically distributed resources to address large-scale problems in many areas such as science, engineering, and commerce. The new paradigm of Grid computing has evolved from these researches on these topics. Performance and utilization of the grid depends on a complex and excessively dynamic procedure of optimally balancing the load among the available nodes. In this paper, we suggest a novel two-dimensional figure of merit that depict the network effects on load balance and fault tolerance estimation to improve the performance of the network utilizations. The enhancement of fault tolerance is obtained by adaptively decrease replication time and message cost. On the other hand, load balance is improved by adaptively decrease mean job response time. Finally, analysis of Genetic Algorithm, Ant Colony Optimization, and Particle Swarm Optimization is conducted with regards to their solutions, issues and improvements concerning load balancing in computational grid. Consequently, a significant system utilization improvement was attained. Experimental results eventually demonstrate that the proposed method's performance surpasses other methods.

  1. Bionics-Based Approach for Object Tracking to Implementin Robot Applications

    Directory of Open Access Journals (Sweden)

    Hussam K. Abdul-Ameer

    2010-01-01

    Full Text Available In this paper, an approach for object tracking that is inspired from human oculomotor system is proposed and verified experimentally. The developed approach divided into two phases, fast tracking or saccadic phase and smooth pursuit phase. In the first phase, the field of the view is segmented into four regions that are analogue to retinal periphery in the oculomotor system. When the object of interest is entering these regions, the developed vision system responds by changing the values of the pan and tilt angles to allow the object lies in the fovea area and then the second phase will activate. A fuzzy logic method is implemented in the saccadic phase as an intelligent decision maker to select the values of the pan and tilt angle based on suggested logical rules. In smooth pursuit phase, the object is kept in the center area of the field of the view by smooth adjusting the values of the pan and tilt angles where this stage is analogue to putting the observing object in the fovea centralis of the oculomotor system. The proposed approach was implemented by using (Camera-Pan / Tilt configuration and showed good results to improve the vision capability of the humanoid robots.

  2. Moving towards in situ tracheal regeneration: the bionic tissue engineered transplantation approach

    OpenAIRE

    Bader, Augustinus; Macchiarini, Paolo

    2010-01-01

    Abstract In June 2008, the world’s first whole tissue-engineered organ – the windpipe – was successfully transplanted into a 31-year-old lady, and about 18 months following surgery she is leading a near normal life without immunosuppression. This outcome has been achieved by employing three groundbreaking technologies of regenerative medicine: (i) a donor trachea first decellularized using a detergent (without denaturing the collagenous matrix), (ii) the two main autologous tracheal cells, na...

  3. A bridge between unified cosmic history by f( R)-gravity and BIonic system

    Science.gov (United States)

    Sepehri, Alireza; Capozziello, Salvatore; Setare, Mohammad Reza

    2016-04-01

    Recently, the cosmological deceleration-acceleration transition redshift in f( R) gravity has been considered in order to address consistently the problem of cosmic evolution. It is possible to show that the deceleration parameter changes sign at a given redshift according to observational data. Furthermore, a f( R) gravity cosmological model can be constructed in brane-antibrane system starting from the very early universe and accounting for the cosmological redshift at all phases of cosmic history, from inflation to late time acceleration. Here we propose a f( R) model where transition redshifts correspond to inflation-deceleration and deceleration-late time acceleration transitions starting froma BIon system. At the point where the universe was born, due to the transition of k black fundamental strings to the BIon configuration, the redshift is approximately infinity and decreases with reducing temperature (z˜ T2). The BIon is a configuration in flat space of a universe-brane and a parallel anti-universe-brane connected by a wormhole. This wormhole is a channel for flowing energy from extra dimensions into our universe, occurring at inflation and decreasing with redshift as z˜ T^{4+1/7}. Dynamics consists with the fact that the wormhole misses its energy and vanishes as soon as inflation ends and deceleration begins. Approaching two universe branes together, a tachyon is originated, it grows up and causes the formation of a wormhole. We show that, in the framework of f( R) gravity, the cosmological redshift depends on the tachyonic potential and has a significant decrease at deceleration-late time acceleration transition point (z˜ T^{2/3}). As soon as today acceleration approaches, the redshift tends to zero and the cosmological model reduces to the standard Λ CDM cosmology.

  4. Kinematics Modeling and Simulation of a Bionic Fish Tail System Based on Linear Hypocycloid.

    Science.gov (United States)

    Wang, Shu-Yan; Zhu, Jun; Wang, Xin-Guo; Li, Qin-Feng; Zhu, Hui-Yun

    2015-01-01

    Kinematics and simulation study on a two-joint linear hypocycloid tail driving system composed of a special planetary gear system and a linkage mechanism are conducted in this paper. First, the composition and working principle of the linear hypocycloid tail transmission system are introduced and analyzed. Second, the kinematics study on the transmission mechanism is conducted with graphical method of vector equation. The relationships between the caudal peduncle stroke, the tail fin swing angle, and the phase difference with structure parameters are studied, and further optimization of structure sizes (i.e., linkage length, sun gear's diameter, the intersection angle between planet gears, etc.) is developed. At last, simulation and comparative study on a biofish in sample parameters with a live fish of Carp is conducted in MATLAB. The study would serve for underwater vehicles thruster design and its mechanism. PMID:27065747

  5. Towards the bionic eye--the retina implant: surgical, opthalmological and histopathological perspectives.

    Science.gov (United States)

    Alteheld, N; Roessler, G; Walter, P

    2007-01-01

    Degenerations of the outer retina such as retinitis pigmentosa (RP) lead to blindness due to photoreceptor loss. There is a secondary loss of inner retinal cells but significant numbers of bipolar and ganglion cells remain intact for many years. Currently, no therapeutic option to restore vision in these blind subjects is available. Short-term pattern electrical stimulation of the retina using implanted electrode arrays in subjects blind from RP showed that ambulatory vision and limited character recognition are possible. To produce artificial vision by electrical retinal stimulation, a wireless intraocular visual prosthesis was developed. Images of the environment, taken by a camera are pre-processed by an external visual encoder. The stimulus patterns are transmitted to the implanted device wirelessly and electrical impulses are released by microcontact electrodes onto the retinal surface. Towards a human application, the biocompatibility of the utilised materials and the feasibility of the surgical implantation procedure were stated. In acute stimulation tests, thresholds were determined and proved to be within a safe range. The local and retinotopic activation of the visual cortex measured by optical imaging of intrinsic signals was demonstrated upon electrical retinal stimulation with a completely wireless and remotely controlled retinal implant. Potential obstacles are reviewed and further steps towards a successful prosthesis development are discussed. PMID:17691339

  6. The bionic retina: a small molecule with big potential for visual restoration.

    Science.gov (United States)

    Drivas, Theodore G; Bennett, Jean

    2012-07-26

    In this issue of Neuron, Polosukhina et al. (2012) intravitreally deliver the light-activatable molecule acrylamide-azobenzene-quaternary ammonium (AAQ) to the eyes of mice with end-stage retinal degeneration. Results show that, with the appropriate illumination, AAQ restores light sensitivity and visual behavior. PMID:22841303

  7. “Digital Dentistry” & “Bionic Dentist” the Future of Dentistry Today

    OpenAIRE

    Alexandre Khairallah

    2015-01-01

    Within the last twenty-five years, the advent of computer has revolutionized our life in general and our work as dentists in particular. Incorporation of digital technology is now becoming an integral part of contemporary dentistry. It has widely modified the traditional diagnostic techniques, disease interpretations, management protocols, treatment outcomes, record keeping and even the teaching sessions in dental schools. For some enthusiastic “bionic” dentists the symbolic representation of...

  8. “Digital Dentistry” & “Bionic Dentist” the Future of Dentistry Today

    Directory of Open Access Journals (Sweden)

    Alexandre Khairallah

    2015-03-01

    Full Text Available Within the last twenty-five years, the advent of computer has revolutionized our life in general and our work as dentists in particular. Incorporation of digital technology is now becoming an integral part of contemporary dentistry. It has widely modified the traditional diagnostic techniques, disease interpretations, management protocols, treatment outcomes, record keeping and even the teaching sessions in dental schools. For some enthusiastic “bionic” dentists the symbolic representation of dentistry, with a dental mirror and a periodontal probe, is becoming “obsolete” and being replaced by intraoral cameras, digital X-rays, pulp testers and other digital modalities

  9. Bionic electrospun ultrafine fibrous poly(L-lactic acid) scaffolds with a multi-scale structure

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Kai; Wang Xuefen; Jing Dazheng; Yang Yin; Zhu Meifang, E-mail: wangxf@dhu.edu.c [State Key Lab for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620 (China)

    2009-06-15

    Poly(L-lactic acid) (PLLA) tissue engineering scaffolds with porous inner structures of individual fibers and controllable architectures were successfully fabricated from the homogeneous polymer-solvent-nonsolvent system (PLLA, CH{sub 2}Cl{sub 2} and DMF) by a single capillary electrospinning with certain conductive patterned templates as fiber collectors. PLLA was dissolved in dimethylformamide (DMF) and methylene chloride (CH{sub 2}Cl{sub 2}) mixed solvent with different ratios. Semi-hollow fiber with porous inner structure and compact shell wall was formed by controlling the content of DMF in the mixed solvents. It is believed that the phase separation should be the key origin for the formation of this microstructure. In order to mimic the natural extracellular matrix (ECM) with a specific structure, conductive patterned collectors were designed and employed to manufacture PLLA ultrafine fibrous scaffolds with three-dimensional architectures. We believe these kinds of multi-scale biodegradable fibrous scaffolds with specific microstructure and macro-architectures could make the electrospun fibrous scaffold better mimic the natural extracellular matrix to satisfy tissue engineering.

  10. One-step synthesis of natural silk sericin-based microcapsules with bionic structures.

    Science.gov (United States)

    Liu, Zhaogang; Cai, Yurong; Jia, Yaru; Liu, Lin; Kong, Xiangdong; Kundu, Subhas C; Yao, Juming

    2014-10-01

    Different techniques are being developed for fabricating microcapsules; it is still a challenge to fabricate them in an efficient and environment-friendly process. Here, a one-step green route to synthesize silk protein sericin-based microcapsules without any assistance of organic solvents is reported. By carefully changing the concentration of calcium ions accompanied with stirring, the morphology of the microcapsules can easily be regulated to form either discoidal, biconcave, cocoon-like, or tubular structures. The chelation of Ca(2+) and shearing force from agitation may induce the conformational transformation of sericin, which possibly results in the formation of microcapsules through the self-assembly of the protein subsequently. The as-prepared cocoon-like microcapsules exhibit pH-dependent stability. A potential application of microcapsules being fabricated from natural water-soluble silk protein sericin for controlled bioactive molecules loading and release system by a pH-triggered manner is quite feasible. PMID:25168858

  11. Producing 3D neuronal networks in hydrogels for living bionic device interfaces.

    Science.gov (United States)

    Aregueta-Robles, Ulises A; Lim, Khoon S; Martens, Penny J; Lovell, Nigel H; Poole-Warren, Laura A; Green, Rylie

    2015-08-01

    Hydrogels hold significant promise for supporting cell based therapies in the field of bioelectrodes. It has been proposed that tissue engineering principles can be used to improve the integration of neural interfacing electrodes. Degradable hydrogels based on poly (vinyl alcohol) functionalised with tyramine (PVA-Tyr) have been shown to support covalent incorporation of non-modified tyrosine rich proteins within synthetic hydrogels. PVA-Tyr crosslinked with such proteins, were explored as a scaffold for supporting development of neural tissue in a three dimensional (3D) environment. In this study a model neural cell line (PC12) and glial accessory cell line, Schwann cell (SC) were encapsulated in PVA-Tyr crosslinked with gelatin and sericin. Specifically, this study aimed to examine the growth and function of SC and PC12 co-cultures when translated from a two dimensional (2D) environment to a 3D environment. PC12 differentiation was successfully promoted in both 2D and 3D at 25 days post-culture. SC encapsulated as a single cell line and in co-culture were able to produce both laminin and collagen-IV which are required to support neuronal development. Neurite outgrowth in the 3D environment was confirmed by immunocytochemical staining. PVA-Tyr/sericin/gelatin hydrogel showed mechanical properties similar to nerve tissue elastic modulus. It is suggested that the mechanical properties of the PVA-Tyr hydrogels with native protein components are providing with a compliant substrate that can be used to support the survival and differentiation of neural networks. PMID:26736824

  12. Analysis and Implementation of Multiple Bionic Motion Patterns for Caterpillar Robot Driven by Sinusoidal Oscillator

    OpenAIRE

    Yanhe Zhu; Xiaolu Wang; Jizhuang Fan; Sajid Iqbal; Dongyang Bie; Jie Zhao

    2014-01-01

    Articulated caterpillar robot has various locomotion patterns—which make it adaptable to different tasks. Generally, the researchers have realized undulatory (transverse wave) and simple rolling locomotion. But many motion patterns are still unexplored. In this paper, peristaltic locomotion and various additional rolling patterns are achieved by employing sinusoidal oscillator with fixed phase difference as the joint controller. The usefulness of the proposed method is verified using simulati...

  13. Controlled synthesis of bionic microstructure PbS crystals by mixed cationic/anionic surfactants

    Science.gov (United States)

    Li, Yanjie; Hu, Yongan; Zhang, Hui; Shen, Yuhua; Xie, Anjian

    2013-07-01

    Hexagonal starfish-like PbS crystals have been synthesized by the reaction of lead acetate and thioacetamide (TAA) controlled by mixture of cetyltrimethylammonium bromide/sodium dodecyl sulfate (STAB/SDS) at the molar ratio of 5: 1 through a hydrothermal process at 80°C. It has been found that the hexagonal starfish-like PbS single crystal is in cubic phase, and the six arms of the star extend along the six directions. By changing reaction conditions, such as the molar ratio of CTAB/SDS, temperature, and reaction time, the amounts of TAA and lead sources, the morphology and structure of the PbS crystals can be controlled. Furthermore, possible formation mechanism was preliminarily illustrated. The room-temperature photoluminescence spectra in solid state of the PbS single crystals obtained after different reaction times were investigated, which demonstrated that the PbS single crystals presented excellent optical properties. This work may open a novel route to the shaped-controllable synthesis of semiconductor crystals with various morphologies.

  14. Design of a Bionic Cilia MEMS three-dimensional vibration sensor

    Science.gov (United States)

    Zhen, Li; Guojun, Zhang; Chenyang, Xue; Shujuan, Wu

    2013-11-01

    A biomimetic three-dimensional piezoresistive vibration sensor based on MEMS technology is reported. The mechanical properties of the sensor are analyzed and the static and dynamic characteristics of the sensor are simulated by ANSYS Workbench 12.0. The structure was made by MEMS processes including lithography, ion implantation, PECVD, etching, etc. Finally, the sensor is tested by using a TV5220 sensor auto calibration system. The results show that the lowest sensitivity of the sensor is 394.7 μV/g and can reach up to 460.2 μV/g, and the dimension coupling is less than 0.6152%, and the working frequency range is 0-1000 Hz.

  15. How to Challenge the Bionic Teacher and Generate Six Million New Ideas. The How To Series.

    Science.gov (United States)

    Bover, Ronald; And Others

    This handbook is designed to help teachers organize an effective teacher center and to develop successful workshop activities. Suggestions are made for initiating a teacher center program, using community resources, and establishing good public relations. Activities are listed for improving programs on language arts, mathematics, social studies,…

  16. Design and Analysis of Bionic Cutting Blades Using Finite Element Method

    OpenAIRE

    Mo Li; Yuwang Yang; Li Guo; Donghui Chen; Hongliang Sun; Jin Tong

    2015-01-01

    Praying mantis is one of the most efficient predators in insect world, which has a pair of powerful tools, two sharp and strong forelegs. Its femur and tibia are both armed with a double row of strong spines along their posterior edges which can firmly grasp the prey, when the femur and tibia fold on each other in capturing. These spines are so sharp that they can easily and quickly cut into the prey. The geometrical characteristic of the praying mantis’s foreleg, especially its tibia, has im...

  17. Kinematics Modeling and Simulation of a Bionic Fish Tail System Based on Linear Hypocycloid

    OpenAIRE

    Shu-yan Wang; Jun Zhu; Xin-guo Wang; Qin-feng Li; Hui-yun Zhu

    2015-01-01

    Kinematics and simulation study on a two-joint linear hypocycloid tail driving system composed of a special planetary gear system and a linkage mechanism are conducted in this paper. First, the composition and working principle of the linear hypocycloid tail transmission system are introduced and analyzed. Second, the kinematics study on the transmission mechanism is conducted with graphical method of vector equation. The relationships between the caudal peduncle stroke, the tail fin swing an...

  18. New bionic navigation algorithm based on the visual navigation mechanism of bees

    Science.gov (United States)

    Huang, Yufeng; Liu, Yi; Liu, Jianguo

    2015-04-01

    Through some research on visual navigation mechanisms of flying insects especially honeybees, a novel navigation algorithm integrating entropy flow with Kalman filter has been introduced in this paper. Concepts of entropy image and entropy flow are also introduced, which can characterize topographic features and measure changes of the image respectively. To characterize texture feature and spatial distribution of an image, a new concept of contrast entropy image has been presented in this paper. Applying the contrast entropy image to the navigation algorithm to test its' performance of navigation and comparing with simulation results of intensity entropy image, a conclusion that contrast entropy image performs better and more robust in navigation has been made.

  19. [Stress analysis of artificial bionic knee joint based on UG6.0 NX NASTRAN].

    Science.gov (United States)

    Shi, Gengqiang

    2014-02-01

    This article introduces the basic principles of finite element analysis in biomechanics, focusing on the basic principles of a variety of finite element analysis software, and their respective characteristics. In addition, it also de scribes the basic stress analysis of UGNX6.0 NASTRAN analysis for artificial knee process, i. e. the choice of the type, material definition, the set of constants, finite element mesh division and the finite element results of the analysis. Finite element analysis and evaluation of the design of personalized artificial knee were carried out, so that the rationality of the geometric design of the structure of the experimental design of artificial knee has been verified. PMID:24804498

  20. Experiment about Drag Reduction of Bionic Non-smooth Surface in Low Speed Wind Tunnel

    Institute of Scientific and Technical Information of China (English)

    Tian Li-mei; Ren Lu-quan; Han Zhi-wu; Zhang Shi-cun

    2005-01-01

    The body surface of some organisms has non-smooth structure, which is related to drag reduction in moving fluid. To imitate these structures, models with a non-smooth surface were made. In order to find a relationship be tween drag reduction and the non-smooth surface, an orthogonal design test was employed in a low speed wind tunnel. Six factors likely to influence drag reduction were considered, and each factor tested at three levels. The six factors were the configuration, diameter/bottom width, height/depth, distribution, the arrangement of the rough structures on the experimental model and the wind speed. It was shown that the non-smooth surface causes drag reduction and the distribution of non-smooth structures on the model, and wind speed, are the predominant factors affecting drag reduction. Using analysis of variance, the optimal combination and levels were obtained, which were a wind speed of 44 m/s, distribution of the non-smooth structure on the tail of the experimental model, the configuration of riblets, diameter/bottom width of 1 mm, height/depth of 0.5 mm, arranged in a rhombic formation. At the optimal combination mentioned above, the 99% confidence interval for drag reduction was 11.13 % to 22.30%.

  1. FY 1996 Report on the research and development project for interdisciplinary area. Part.2. Research on bionic designs; 1996 nendo yugo ryoiki kenkyu kaihatsu. 2. Bionic design ni kansuru kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-03-01

    The objects of this project are to elucidate the self-organization mechanisms of a living body, e.g., functional adaptation to environments and self-restoration, to utilize the molecular interactions in a living body, and thereby to establish the basic technologies for developing molecular motor functions, e.g., artificial organs. Described herein are the FY 1996 results. For creation of living soft tissues, N-ePTFE and Gf are found to be good base materials for cell growth in the serum-free culture, and may be applicable to bio-reactors. Sugar-bound high-molecular-weight compounds and artificial hyaloid body are created. For hard tissue materials, e.g., artificial articulation, the macrophage is activated by englobing worn debris of polyethylene, to activate the broken bone cells that absorb the bone, causing the artificial articulation to become loose. For researches on molecular motor mechanisms, it is considered that myosin changes the head morphology to give a driving force to the muscle, and this concept is studied in detail. The photosynthesizing protein is a molecule related to light and electricity, and is useful as the material to apply the living functions to industrial technologies. The technologies for assembling molecules are studied by utilizing the self-organization functions of living molecules. Development of other molecular machines is also attempted. (NEDO)

  2. 产品仿生设计的生物学原理%Biological Principles in Product Bionic Design

    Institute of Scientific and Technical Information of China (English)

    潜铁宇; 李昕

    2008-01-01

    任何一种生物其自身结构的合理性、对外部环境的适应性,都是产品设计所不具备的.由设计所造成的人与物、人与环境之间的冲突随处可见.从形态仿生和原理仿生2个方面展示了仿生设计给产品设计带来的深刻变化.通过对生物体的模仿,产品能以更合理的方式存在于环境之中.人与大自然之间那种与生俱来的亲和感使这种与仿生设计之间的和谐共生具有了可能.

  3. The Symbolic Analysis of Bionic Product%仿生产品造型中的符号分析

    Institute of Scientific and Technical Information of China (English)

    康红娜

    2009-01-01

    人类的设计活动从设计的萌芽阶段到手工艺设计阶段,再到工业设计阶段,经历了漫长的过程,经历了众多风格的演变.随着人们需求的不断变化,"形式追随功能"和"形式与功能并重"的设计方针已不再合乎现代人的需求品味,人们开始追逐一种能够和他们产生情感共鸣的全新的形式,因此,能够传达特定语义和符号的仿生学成为大家所追求的目标.

  4. Bionic self-sufficient greenhouses and cattle breeding. Agrosphere IV; Bionisch autarkische glastuinbouw en veeteelt. Agrosphere IV

    Energy Technology Data Exchange (ETDEWEB)

    Schmitz, A.H.H. [VERWOL Klimaatplafonds, Delft (Netherlands)

    2007-09-15

    Agrosphere-IV is a concept in which cattle breeding and greenhouse culture are combined in an artificial cycle which functions similar to the cycles on earth. In this article attention is paid to the combination of greenhouses for the production of paprikas (peppers) or tomatoes and breeding of pigs (porkers) [Dutch] Met de ontwikkeling van Agrosphere-IV is een vierde biosfeerconcept benoemd. Waar huidige agroconcepten nog uitgaan van samenvoeging van traditionele veeteelt- en glastuinbouwconcepten betreft het hier een directe koppeling van veeteelt en glastuinbouw. De koppeling heeft plaats via uitgekiende luchtstromen en hergebruik van de afvalstromen en vormt zo een bionisch autarkisch systeem.

  5. Discussion on Bionics Design of Product Form%论产品形态仿生设计

    Institute of Scientific and Technical Information of China (English)

    李芬; 蔡建平; 李理

    2007-01-01

    论述了形态仿生设计的原理,结合产品实例,分析了产品造型中仿生设计的特点及创新性,指出形态仿生设计作为现代产品造型设计的重要设计方法之一,必将成为未来产品造型设计的一大发展趋势.

  6. 仿生驱蚊虫人造草丝的开发%Development of Bionic Mosquito Repelling Artificial Turf

    Institute of Scientific and Technical Information of China (English)

    王伟; 李环环; 李胜业

    2015-01-01

    以人造草丝加工成型工艺为基础,制备了仿生驱蚊虫人造草丝纤维,并研究了其特性.结果表明:添加经超细化处理的天然驱蚊虫中草药粉,可以有效地驱散蚊虫.伴随温度的升高,其释放效果增强,驱蚊虫效果优异.其中蚊净香草在人造草丝配方体系中添加5~8份,可以达到人造草坪垂直高度3 m内无蚊虫的驱蚊虫效果,且基本不影响人造草丝力学性能.

  7. Bionics Research of Building Energy Efficiency%建筑节能中的仿生学研究

    Institute of Scientific and Technical Information of China (English)

    温媛媛

    2009-01-01

    环境和能源是建设和谐社会所要面临的两大问题.目前,建筑能耗已成为我国的耗能大户,建筑节能刻不容缓.在建筑节能中进行仿生学研究将是一种全新的节能思考方式,提出了在建筑节能中进行仿生学设计的理念和原则.这不仅是为了建筑创新,更是为了建筑与自然环境相协调,保持生态平衡,实现可持续发展.

  8. The protective triterpene layer of the desert plant Sarcocaulon Patersonii: A bionic model for innovative PV encapsulation?

    Energy Technology Data Exchange (ETDEWEB)

    Reuther, C.; Rojas-Chapana, J.; Fiechter, S.; Tributsch, H. [Dept. Solare Energetik, Hahn-Meitner-Institut, 14109 Berlin (Germany)

    2007-09-06

    The transparent, protective encapsulation (wax) layer of the geranium plant Sarcocaulon Patersonii, living in an extreme desert environment, was investigated with respect to its potential as flexible photovoltaic encapsulation material. Surprisingly, the main component of the wax turned out to be triterpenes, the solid state, thermal, optical, photochemical and protective properties of which are unexplored in technology and partially presented here. The protective action of extracted 200 nm thin triterpene layers on CuInS{sub 2} solar modules was encouraging although chemical extraction may have changed a more favorable natural morphology. Complications arising from the little known chemistry, when interacting with specific microelectronic components, and further need of research are discussed. (author)

  9. Air conditioning: Low-cost autonomous air conditioning systems for bionic buildings; Klimatechnik: Bezahlbare, autarke Klimatisierung von bionischen Gebaeuden

    Energy Technology Data Exchange (ETDEWEB)

    Schmitz, H. [ARCADIS, Maastricht (Netherlands); Kutzker, A. [RUBITHERM GmbH, Hamburg (Germany)

    2005-05-01

    Termites in Africa construct buildings that are respectfully referred to as ''cathedrals'' by experts. Millions of insects inhabit these structures that are efficiently air conditioned: While the outside temperatures vary from 10 C at night to 45 C in daytime, the air inside has a constant temperature of 29 C +/- 1 C. The contribution presents a low-cost solution for human buildings. (orig.)

  10. Improved Algorithms for the Classification of Rough Rice Using a Bionic Electronic Nose Based on PCA and the Wilks Distribution

    Directory of Open Access Journals (Sweden)

    Sai Xu

    2014-03-01

    Full Text Available Principal Component Analysis (PCA is one of the main methods used for electronic nose pattern recognition. However, poor classification performance is common in classification and recognition when using regular PCA. This paper aims to improve the classification performance of regular PCA based on the existing Wilks ?-statistic (i.e., combined PCA with the Wilks distribution. The improved algorithms, which combine regular PCA with the Wilks ?-statistic, were developed after analysing the functionality and defects of PCA. Verification tests were conducted using a PEN3 electronic nose. The collected samples consisted of the volatiles of six varieties of rough rice (Zhongxiang1, Xiangwan13, Yaopingxiang, WufengyouT025, Pin 36, and Youyou122, grown in same area and season. The first two principal components used as analysis vectors cannot perform the rough rice varieties classification task based on a regular PCA. Using the improved algorithms, which combine the regular PCA with the Wilks ?-statistic, many different principal components were selected as analysis vectors. The set of data points of the Mahalanobis distance between each of the varieties of rough rice was selected to estimate the performance of the classification. The result illustrates that the rough rice varieties classification task is achieved well using the improved algorithm. A Probabilistic Neural Networks (PNN was also established to test the effectiveness of the improved algorithms. The first two principal components (namely PC1 and PC2 and the first and fifth principal component (namely PC1 and PC5 were selected as the inputs of PNN for the classification of the six rough rice varieties. The results indicate that the classification accuracy based on the improved algorithm was improved by 6.67% compared to the results of the regular method. These results prove the effectiveness of using the Wilks ?-statistic to improve the classification accuracy of the regular PCA approach. The results also indicate that the electronic nose provides a non-destructive and rapid classification method for rough rice.

  11. Investigation of Micro-wear and Micro-friction Properties for Bionic Non-smooth Concave Components

    Institute of Scientific and Technical Information of China (English)

    Han Zhi-wu; Xu Xiao-xia; Qiu Zhao-mei; Ren Lu-quan

    2005-01-01

    Five kinds of 45# steel samples with concave features on the surface were manufactured using Laser Texturing Technology (LTT). Optimum design theory was used to design the experiment, and a two-level orthogonal table -L16 (215) design was adopted . Micro-wear and micro-friction experienced by samples with concave surface features and samples with smooth surfaces were compared experimentally. The wear resistance of samples with concave surface features was increased most,and different surface morphologies had different effects on friction and wear properties.

  12. Influence of current density on nano-Al2O3/Ni+Co bionic gradient composite coatings by electrodeposition

    Institute of Scientific and Technical Information of China (English)

    Tan Liu; Luquan Ren; Sirong Yu; Zhuwu Han

    2008-01-01

    Metal and nano-ceramic nanocomposite coatings were prepared on the gray cast iron surface by the electredeposition method. The Ni-Co was used as the metal matrix, and nano-Al2O3 was chosen as the second-phase particulates. To avoid poor inter-face bonding and stress distribution, the gradient structure of biology materials was found as the model and therefore the gradient composite coating was prepared. The morphology of the composite coatings was flatter and the microstructure was denser than that of pure Ni-Co coatings. The composite coatings were prepared by different current densities, and the 2-D and 3-D morphologies of the surface coatings were observed. The result indicated that the 2-D structure became rougher and the 3-D surface density of apices became less when the current density was increased. The content of nanoparticulates reached a maximum value at the current density particles caused dispersive strengthening and grain refining.

  13. A New Method of High Temporal Resolution Remote Sensing Imaging: Moving Target Detection with Bionics Compound Eye

    OpenAIRE

    Yan, Lei; Gao, Pengqi; Sun, Huabo; Zhao, Hongying

    2010-01-01

    Generally speaking, the former research mostly focused in imitation of equipment structure, rather than in compound eye mechanism, which cause the research to be relatively slow. This project team has done some foundation work in insect morphology, pattern recognition and digital imaging domain. Based on former foundation, this project continues to do some work, such as simulating dragonfly compound eye imaging system, establishing elementary mathematical model developing compound eye equipme...

  14. Mobility training using a bionic knee orthosis in patients in a post-stroke chronic state: a case series

    Directory of Open Access Journals (Sweden)

    Byl Nancy N

    2012-07-01

    Full Text Available Abstract Introduction An emerging area of neurorehabilitation is the use of robotic devices to enhance the efficiency and effectiveness of lower extremity physical therapy post-stroke. Many of the robotic devices currently available rely on computer-driven locomotive algorithms combined with partial bodyweight-supported treadmill training that drive reflex stepping with minimal patient intention during therapy. In this case series, we examined the effect of task-oriented mobility training in patients in a post-stroke chronic state using a novel, wearable, mobile, intention-based robotic leg orthosis. Case presentation Three individuals, all of whom had reached a plateau with conventional bodyweight-supported treadmill training, participated in task-oriented mobility therapy (1.5 hours, two to four times per week for four weeks with a robotic leg orthosis under supervision by a physical therapist. Participant 1 was a 59-year-old Caucasian man, who had an ischemic left stroke six years previously with resultant right hemiparesis. Participant 2 was a 42-year-old Caucasian woman with left hemiparesis after a right stroke 15 months previously. Participant 3 was a 62-year-old Caucasian woman with a history of a right middle cerebral artery aneurysm with third degree sub-arachnoid hemorrhage 10 years ago. Immediately after training, all participants demonstrated improved gait speed (10 meter walk, stride length and walking endurance (6 minute walk compared with baseline measurements. Improvements were maintained one month after training. Timed up and go and five times sit-to-stand were maintained for all three participants, with only one individual remaining outside the safety performance norm. Conclusions Lower extremity training integrating an intention-based robotic leg orthosis may improve gait speed, endurance and community levels of participation in select patients in a post-stroke chronic state after plateauing within a bodyweight-supported treadmill training program. The wearable, mobile assistive robotic device safely supplemented supervised physical therapy including mobility and balance skill training.

  15. Study on Design Method of New Age Food Machinery

    OpenAIRE

    Xiaowei Jiang

    2015-01-01

    The study purpose is to investigate an effective design method for food machinery, thereby raising the external appearance quality and pleasant of food machinery, strengthening additional value and whole shape effect of product, satisfying the demand of market competition and creating higher economic efficiency. The study elaborates on the green design, optimal design, concurrent design and bionics design, including the shape bionics, structure bionics, interface bionics and texture bionics, ...

  16. 虾丸无虾蟹肉棒无蟹多为仿生品%HaWan without shrimp crabmeat bar no crab, more for bionic product

    Institute of Scientific and Technical Information of China (English)

    陈黎; 宋洁

    2011-01-01

    @@ "3·15热线" 迎来众多消费者的投诉和咨询.一位张先生来电质疑在超市买的虾丸、蟹肉棒成分和名称不符.据售货员讲这类海鲜丸都是仿生食品,什么是仿生食品?能吃吗?

  17. 仿生灯饰产品网络三维展示及定制设计%BIONIC LIGHTING PRODUCTS NETWORK 3D DISPLAY AND CUSTOMIZED DESIGN

    Institute of Scientific and Technical Information of China (English)

    马驰

    2013-01-01

    利用仿生学的原理对家居照明灯饰进行设计开发,借助互联网平台使用户能够进行实景体验和定制家居产品;从仿生灯饰产品网络3D展示及定制的设计出发,结合人机工程学和产品语义学的原理,探讨新型现代家居灯饰产品开发和设计的方法.

  18. Application of Bionics Design in Sculpture Design for Products%仿生在产品造型设计中的应用

    Institute of Scientific and Technical Information of China (English)

    姜娜; 杨君顺

    2006-01-01

    从仿生的思维特征、应用形式入手,论述了产品造型中仿生设计的创新性及其先进性,指出在未来的产品造型设计中,人们将更加注重人性化、个性化和生态化的产品,仿生设计将是造型的重要设计方法之一.

  19. Discussion on Application of Rhetoric in Product Bionic Design%产品仿生设计中修辞运用探讨

    Institute of Scientific and Technical Information of China (English)

    刘青春; 潘荣

    2008-01-01

    从语言中明喻、隐喻、转喻等修辞相关理论入手,将修辞的认知和思维模式与产品仿生设计手法联系起来研究,运用实例进行分析和阐释,从而初窥了修辞在仿生产品设计中的妙处,为产品仿生设计提供了一种新的思维模式.

  20. Product Form Bionics Design and Reverse Engineering Technique%产品形态仿生设计与逆向工程技术

    Institute of Scientific and Technical Information of China (English)

    郭南初; 熊志勇

    2006-01-01

    从产品形态仿生设计的传统过程出发,分析了产品仿生形态设计中存在的问题;提出了产品形态仿生设计的技术路线;并对产品形态仿生中的若干逆向工程技术问题进行了讨论.指出利用逆向工程技术和计算机技术把理想的生物形态引入到产品形态中,可以定量地对产品形态进行设计,可以减少产品形态设计的不确定性;提高设计效率和设计质量;使产品形态的重用成为可能.

  1. 从审美体验看产品形态仿生设计%Looking at Product Bionic Shaping Design from Esthetic Experience

    Institute of Scientific and Technical Information of China (English)

    王爱红; 李艺

    2008-01-01

    从审美体验与形态仿生、审美体验与产品形态、审美体验与产品形态仿生3个方面出发,对形态仿生设计在审美体验下产品形态设计的影响力进行了分析和探讨.

  2. 形态仿生在产品设计中的应用%The application of morphological bionic in the product design

    Institute of Scientific and Technical Information of China (English)

    张靖靖

    2010-01-01

    形态仿生,包含了非常鲜明的生态设计观念,其应用意义不仅仅局限于节约能源和环保功能,它的核心是以人为本,是可持续发展的和谐与共生.形态仿生设计恰好可以做到让设计回归自然,并赋予设计形态以生命的象征,来体现人类特定的观念和情感以及怎样更好地改变、改善我们的生存环境.

  3. 抽象仿生在产品设计中的应用模式研究%Research on Application Mode of Abstract Bionics in Product Design

    Institute of Scientific and Technical Information of China (English)

    孙媛媛; 张小开

    2008-01-01

    文章讨论了抽象仿生设计的认知基础,对抽象仿生设计的过程及特征线的提取进行了详细地论证,引用实际案例说明了这一过程.通过对抽象仿生设计过程的分析,论文指出了抽象仿生设计的模式,并就这一模式进行了深入探讨.

  4. Product ecological system and product evolutionary based on bionic%基于生物仿生的产品生态系统及进化

    Institute of Scientific and Technical Information of China (English)

    付培红; 周宏明; 李峰平; 李沛; 周余庆

    2012-01-01

    为分析特定环境下的产品进化问题,引入生态学的基本理论,建立一种产品生态系统基本模型。提出由产品个体、产品种群、产品群落、非产品因子和环境等因素组成的产品生态系统框架,并定义了这些系统的组成要素;在分析环境对产品作用特性的基础上,构建了产品的环境适应性和环境对产品的作用力模型,用以评价产品在特定环境中的生存状态和识别影响产品生存进化的关键因子,从而建立了产品生态系统基本模型。基于产品生态系统,设计了产品进化指示器模型,并以眼镜产品为例说明了指示器的应用。%To analyzing the product evolutionary under specific environment,a basic model of product ecosystem was built based on ecology theory.Product ecosystem frame which included product individual,product population,product community,non-product factor and environment was proposed,morever,these factors were defined.Based on the analysis of environment on product’s action characteristic,a product’s environmental adaptability model and a product’s environmental force model were established,which was used to evaluate the living state of product under the specific environment and to recognise the key factors of product evolutionary.Thus,a basic model of product ecosystem was established.A indicator model of product was designed,and a evolutionary analysis of eyeglasses was given as an example to illustratre its application.

  5. 大批量定制产品仿生建模基础%Study on Product Bionical Modeling of Mass Customization

    Institute of Scientific and Technical Information of China (English)

    陈昆昌; 陈子辰

    2005-01-01

    大批量定制是21世纪制造业一种重要的模式,产品建模是其核心技术之一.以仿生为背景围绕大批量定制产品建模,首先分析了产品重用策略,然后论述了模块化原理及其构件表示,在阐述基于事物特性描述的标准构件信息表达基础上,说明了产品基因建模的概念、特点和划分准则.

  6. Bionic Design Flow from Natural Organisms to Product%从生物到产品的仿生设计程序

    Institute of Scientific and Technical Information of China (English)

    杨丽英; 孙宁娜; 张文莉; 董佳丽

    2010-01-01

    从对自然生物的观察积累与研究发现中得到启示,分析被仿生对象的生物概念,进而寻求对应的生物特征,并结合课程实践案例,对从生物到产品的仿生设计程序进行分析,为产品仿生设计教学提供新的程序和借鉴手法.

  7. 现代产品形态"仿生"设计艺术研究%Study on the Bionic Arts in the Design of Modern Products

    Institute of Scientific and Technical Information of China (English)

    王毅; 熊大庆

    2007-01-01

    仿生物形态设计是现代产品形态设计的主要方法之一,重点论述了产品形态仿生设计中的具象艺术与抽象艺术以及产品形态仿生设计中的文化艺术--"意象"设计.

  8. Wing Structural Layout Design Based on Bionics Theory%基于仿生学理论的机翼结构布局设计

    Institute of Scientific and Technical Information of China (English)

    陈志超; 詹家礼; 周斌; 孙鹏

    2014-01-01

    探讨了鱼骨,树叶,羽毛的生物骨架,借助仿生学理论,对大展弦比机翼进行了结构布局设计.通过有限元模型,分别对机翼挠度,强度,扭转角进行校核,证明了仿生机翼是满足设计要求的.

  9. The Design and Manufacture of Bionic Emotional Robot Head%仿生表情机器头的设计与制作

    Institute of Scientific and Technical Information of China (English)

    邓海波; 陈工; 王志良

    2008-01-01

    以仿生学为基础,参照人脸的肌肉布局和运动,综合运用机械设计、机械三维仿真、单片机控制、美术造型和人工智能等技术,设计制作了具有某种程度情感表达能力的仿生表情机器头,为人工智能、人工心理以及情感建模等理论研究提供了一高效而直观的演示平台.

  10. 基于舵机控制的仿生鱼设计%Bionics fish-based design of steering gear control

    Institute of Scientific and Technical Information of China (English)

    卢亚平; 宋天麟

    2011-01-01

    In this paper,the characteristics of fish swimming and biomimetic robotic fish significance of research for the purpose。Based on the working principle of steering gear,this paper puts forward autonomous obstacle-avoiding of biomimetic fish design scheme.A%为实现仿生机器鱼的设计,分析鱼类游动的特点,基于舵机的工作原理,提出了自主避障的仿生鱼设计方案。根据鱼类推进理论,对仿生鱼进行了机械结构设计、软件设计。

  11. Biocompatibility of nano-bionic scaffolds%纳米仿生复合支架的生物相容性

    Institute of Scientific and Technical Information of China (English)

    袁世民; 刘宁; 丘青中

    2011-01-01

    背景:纳米材料构建具有生物活性的组织工程骨,可以很好的模仿体内细胞外基质的结构,有利于细胞黏附、生长.目的:评价新型仿生壳聚糖/胶原纳米纤维支架与SD大鼠骨髓基质干细胞的体外相容性.方法:分离培养SD大鼠骨髓基质干细胞,流式细胞分析法对细胞表面抗原进行检测;相差显微镜观察细胞形态.聚电解质共凝聚技术制作仿生壳聚糖/胶原纳米纤维支架,取生长良好的P3代,与仿生壳聚糖/胶原纳米纤维支架体外联合诱导培养,通过细胞贴壁率、生长曲线、细胞活力、周期、细胞Ⅰ型胶原染色、扫描电镜观察综合评价材料与细胞的相容性.结果与结论:骨髓基质干细胞可在体外分离扩增,表达CD29、CD44和CD106,不表达CD34和CD45,细胞形态为长梭形,仿生壳聚糖/胶原纳米纤维平均孔径为150 μm,与骨髓基质干细胞有较好的黏附性.提示骨髓基质干细胞可在体外长期、稳定培养;是理想的组织工程种子细胞;仿生壳聚糖/胶原纳米纤维与骨髓基质干细胞有良好的相容性,可用来做组织工程生物材料.%BACKGROUND: Nano-materials to build tissue engineered bone with bioactivity can simulate the structure of the extracellular matrix that is conducive to cell adhesion and growth.OBJECTIVE: To investigate the in vitro histocompatibility of nano chitosan-sodium\\collagen (nano-CS\\COL) scaffolds. METHODS: Bone marrow mesenchymal stem cells (BMSCs) were isolated from SD rats and cultured, and then were identified by morphology observations with the optical microscope and the exterior antigen through the flow cytometry method. Nano-CS\\COL biomimetic scaffolds were prepared through the polyelectrolyte complex coacervation, then were co-cultured with BMSCs. The cellular compatibility was detected through the adherent rate, growth curve, cell livingness and cell cycle, dyeingⅠcollagen and morphology observations by the scanning electron microscope.RESULTS AND CONCLUSION: The BMSCs could be obtained and cultured, express CD29, CD44, CD106, not CD34, CD45. The diameter of the nano-CS-COL scaffold was 150 μm with good histocompatibility to BMSCs. The BMSCs can be obtained and cultured stably for a long term in vitro , which are the ideal choice for tissue engineering. Nano-CS/COL scaffolds can be used as tissue engineering biomaterials for their good histocompatibility.

  12. Interpretation of Bionics and Solar Energy Utilization in Architecture%仿生与建筑中太阳能利用的解析

    Institute of Scientific and Technical Information of China (English)

    孙凤明; 尹宝泉; 李娟

    2008-01-01

    该文针对太阳能在建筑中应用的各种形式、方法,结合建筑仿生学、生态学的相关研究,提出从仿生角度解析建筑中太阳能的利用,即建筑中能量、物质的运行不是单一的体系,而是复合的"类生命系统".

  13. 一种利用海豚叫声的仿生水声通信方法*%Bionic underwater acoustic communication using dolphin sounds∗

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

      针对水下通信隐蔽性的需求,克服传统固定载波调制方式带来的声源暴露问题,提出一种基于海豚叫声的仿生伪装水声通信方法,使通信信号被当作海洋生物噪声排除,达到隐蔽通信的效果。研究了海豚叫声信号特点,利用海豚哨声信号实现同步与识别,采用差分脉冲位置调制方法,信息调制在相邻海豚嘀嗒声信号的时间间隔,采用压缩传感体制下的匹配追踪技术估计信道,虚拟时反技术实现信道均衡。湖试结果验证了该方法的有效性和可行性,接收声信号与发射信号声音上具有很高的相似度,可以达到伪装隐蔽的效果。实验中水平距离2 km,通信速率不小于29 bps时,误码率可以达到10−4以下。%An underwater acoustic communication scheme using intrinsic dolphin sounds is proposed to overcome the sound exposure derived from traditional fixed carrier modulation for covert communication in this paper. The communication signal can be detected but it could easily be excluded in the process of recognition/classification by an adversary. This is because the signal resembles dolphin sounds. Properties of dolphin sounds are investigated in this paper. Synchronization in this scheme is achieved by using dolphin whistles while dolphin clicks are used as information carrier. The time interval between dolphin clicks conveys information. Channel equalization is performed by passive time reversal mirror technique, whereas channel estimation is done through matching pursuit method under the theory of compressive sensing. The efficiency and feasibility of the proposed method are verified by lake trial. The received signal and emission mimic bio-signal are very similar. Bit error rate less than 10−4 is achieved above 29 bps to a distance of about 2 km.

  14. Anaerobic degradation of cellulosic substrates - Bionic implementation of the forestomach sysem of a ruminant; Anaerober Abbau cellulosehaltiger Substrate. Bionische Implementierung des Vormagensystems des Wiederkaeuers

    Energy Technology Data Exchange (ETDEWEB)

    Weichgrebe, Dirk [Hannover Univ. (Germany). Inst. fuer Siedlungswasserwirtschaft und Abfalltechnik; Stopp, Paul; Rosenwinkel, Karl-Heinz; Breves, Gerhard; Strecker, Michael

    2011-07-01

    The forestomach system of a ruminant technically can be realized by means of a two-stage arrangement of hydrolysis/acidification (first step) and methanation (second stage). Both stages are connected by a retention of solid substances and by a recirculation of process water. The first stage converts cellulose-rich substrates in short-chain volatile organic acids. The second stage converts these short-chain volatile organic acids into biogas. The technical realization of this two-stage arrangement is investigated by the co-operation project RUMEN-DAUMEN 2.0 of the Institute of Environmental Engineering at the Leibniz University of Hannover (Hannover, Federal Republic of Germany) and the Physiological Institute of the University of Veterinary Medicine Hannover (Hannover, Federal Republic of Germany). The aim of this study is to design a viable implementation of cellulosic waste materials by means of an efficient hydrolysis and to convert produced fatty acids efficiently in biogas.

  15. The preliminary application of bionic electrical stimulation therapy in intrauterine insemination%仿生物电疗法在人工授精中的应用价值

    Institute of Scientific and Technical Information of China (English)

    何茜冬; 苏园园; 唐妍; 韩燕华; 陈燕; 林凤莲

    2014-01-01

    目的 探讨仿生物电疗法在人工授精周期治疗中的应用价值.方法 中山市人民医院生殖专科将仿生物电疗法应用于宫腔内人工授精(intrauterine insemination,IUI)治疗,自2012年3月至201 3年5月共完成34例42周期为研究组,选择同期条件相似的普通人工授精62例1 04周期为对照组.比较两组的妊娠情况.结果 研究组女方平均年龄(31.6±4.5)岁,临床周期妊娠率28.6%.对照组女方平均年龄(29.3±4.4)岁,临床周期妊娠率10.6%.两组间促排周期比、不孕病因构成比、精液处理后精子情况、精子回收率等情况比较,差异无统计学意义(P>0.05).研究组女方平均年龄及不孕年限均显著高于对照组(P<0.05),研究组临床周期妊娠率显著高于对照组(P<0.05),差异有统计学意义.结论 在双侧输卵管通畅的人工授精治疗中应用仿生物电疗法可提高周期妊娠率.

  16. Form and Language of Bionic Design for Modern Footwear%现代鞋靴仿生设计的形式与语言

    Institute of Scientific and Technical Information of China (English)

    王丽霞; 周福芹; 陈念慧

    2010-01-01

    @@ 仿生设计是设计人员将自然界中动植物的形态、色彩、肌理、图案纹理或某种功能表现到新产品中的种方法.鞋靴仿生设计主要是模仿和借鉴动植物的某种造型特征,当然,在模仿借鉴过程中,设计人员要对动植物的造型进行艺术性的加工处理,在鞋靴造型和基本穿着功能与动植物造型之间寻求一种有机的结合.

  17. 鞋类产品中仿生设计的运用%Research on the Bionic Design of the Footwear

    Institute of Scientific and Technical Information of China (English)

    翟晶晶; 徐达宇

    2010-01-01

    @@ 自然界的生物一直是服伟品创作的原型和题材,仿生设计方法也是服饰品创作的主要方法之一.本文介绍了鞋类产品仿生设计的涵义,以实例来说明仿生概念在我国鞋靴历史中的应用,并简述了鞋类仿生设计的主要方法.

  18. Towards a bionic bat: A biomimetic investigation of active sensing, Doppler-shift estimation, and ear morphology design for mobile robots.

    OpenAIRE

    Carmena, Jose M.

    2002-01-01

    So-called CF-FM bats are highly mobile creatures who emit long calls in which much of the energy is concentrated in a single frequency. These bats face sensor interpretation problems very similar to those of mobile robots provided with ultrasonic sensors, while navigating in cluttered environments. This dissertation presents biologically inspired engineering on the use of narrowband Sonar in mobile robotics. It replicates, using robotics as a modelling medium, how CF-FM bats pr...

  19. Are 3-D Movies Bad for Your Eyes?

    Medline Plus

    Full Text Available ... A Telescope in Your Eye? Aug 03, 2015 Bionic Eye Being Tested for Dry AMD Jul 27, 2015 Argus II Retinal Prosthesis System: ‘Bionic Eye’ is Incredible Breakthrough but not Right for ...

  20. Biological couplings:Classification and characteristic rules

    Institute of Scientific and Technical Information of China (English)

    REN LuQuan; LIANG YunHong

    2009-01-01

    introduced from the bionic viewpoint.Constitution,classification and characteristic rules of biological coupling are illuminated,the general modes of biological coupling studies are analyzed,and the prospects of multi-coupling bionics are predicted.

  1. Are 3-D Movies Bad for Your Eyes?

    Medline Plus

    Full Text Available ... A Telescope in Your Eye? Aug 03, 2015 Bionic Eye Being Tested for Dry AMD Jul 27, 2015 Argus II Retinal Prosthesis System: ‘Bionic Eye’ is Incredible Breakthrough but not Right for Everyone ...

  2. Physical Activity Helps Seniors Stay Mobile

    Science.gov (United States)

    ... Mobile Kidney Failure and Its Treatment Featured Website: Bionic Man Past Issues Most Viewed July 2014 Print ... Mobile Kidney Failure and Its Treatment Featured Website: Bionic Man Links Go4Life Exercise Brings Bone Benefits that ...

  3. Biological couplings: Classification and characteristic rules

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The phenomena that biological functions originate from biological coupling are the important biological foundation of multiple bionics and the significant discoveries in the bionic fields. In this paper, the basic concepts related to biological coupling are introduced from the bionic viewpoint. Constitution, classification and characteristic rules of biological coupling are illuminated, the general modes of biological coupling studies are analyzed, and the prospects of multi-coupling bionics are predicted.

  4. Study on Design Method of New Age Food Machinery

    Directory of Open Access Journals (Sweden)

    Xiaowei Jiang

    2015-04-01

    Full Text Available The study purpose is to investigate an effective design method for food machinery, thereby raising the external appearance quality and pleasant of food machinery, strengthening additional value and whole shape effect of product, satisfying the demand of market competition and creating higher economic efficiency. The study elaborates on the green design, optimal design, concurrent design and bionics design, including the shape bionics, structure bionics, interface bionics and texture bionics, to introduce the great significance of researching food machinery, based on which the conclusion has been reached.

  5. Design of a New Propulsion Mechanism of Imitating Duck’s Webbed-feet

    OpenAIRE

    Yuan Dai; Zhongqiang Zheng; Jinlei Chen; Zongyu Chang

    2013-01-01

    With the wide application of the underwater vehicle in ocean exploration, bionics propulsion aroused intensive interest among researchers. Bionic locomotion of aquatic animals has the advantages of highly maneuver, power-efficient endurance and so on. In the paper the mechanism of duck’s swimming is studied and a novel bionics propulsion mechanism is designed and analyzed. The mechanics of underwater vehicle is investigated by ADAMS. Dynamics response of the system is analyzed by using numeric...

  6. Structural Parameter Optimization for 3-DOF Spherical Parallel Mechanism, Binocular Stereo

    OpenAIRE

    Hengyu Li; Junjie Huang; Shuping Li; Shaorong Xie; Jun Luo

    2012-01-01

    The movement scope of the human eye is proposed to be the target working space of the bionic eye by analyzing the error of 3 rotational degrees of freedom (3-DOF) Spherical Parallel Mechanism (SPM). The indexes of the worst dexterity and dynamic performance for bionic eye are defined by using the maximum condition number of Jacobian matrix. Reasonable structural parameters are chosen through analysis and comparison in the case of satisfying the special requirements of the bionic eye structure...

  7. Bionické štruktúry v navrhování designu

    OpenAIRE

    Steinerová, Romana

    2015-01-01

    This work refers to the application of bionic structures in architecture and furniture design. It provides an overview of the use of bionic structures in the history of architecture and design, and also about the current trends in architecture and furniture design inspired by nature. The knowledge acquired by the survey of architecture and design author also uses in her own design of the dining table inspired by the bionic structures.

  8. Idea protez bionicznych w nowoczesnej protetyce

    OpenAIRE

    Matejko, Bartłomiej; Gładysz, Joanna

    2010-01-01

    Over the past decades, a tremendous progress has been made in creating artificial machines and systems. Breakthroughs in this field have been possible through the collaboration of scientists, biologists, computer scientists, engineers and patients. A particularly promising area is the invention of bionic artificial limbs as well as bionic ear and eye prostheses. The connection of the nervous system with a bionic prosthesis enables it to partly fulfill the functions of a real limb. This is an ...

  9. Bionic pesticide on promoting the protection of geographical indication agricultural products%仿生农药对地理标志农产品质量保护的促进

    Institute of Scientific and Technical Information of China (English)

    陈锦铭; 岳帅伯

    2012-01-01

    农药是地理标志农产品质量检测的重要指标,低毒、低残留的新型农药对地理标志农产品的发展有重大意义.介绍了仿生农药对地理标志农产品质量保护的促进,包括仿生农药对土壤活度、农田pH值、水分等的影响,分析了仿生农药对地理标志农产品质量的保证,旨在为地理标志农产品质量保护提供有效途径.

  10. Research on Production Control of High Purity AZ91D Magnesium Alloy in Bionic Inlay Casting Process%仿生镶嵌铸造用高纯度AZ91D镁合金生产控制研究

    Institute of Scientific and Technical Information of China (English)

    万元元; 樊富友; 陈明; 程远胜

    2013-01-01

    以生产镁合金/钢仿生镶嵌铸造件用高纯净度AZ91D镁合金为出发点,从原材料及辅料的选择和检验、镁合金熔体保护方式及合金精炼方法、合金熔体夹杂物炉前检测控制等方面着手,通过设计坩埚内保护气体释放装置、炉前断口试样模具及断口判别方法等手段,总结出了用于生产镁合金/钢仿生镶嵌铸造件的高纯净度AZ91D镁合金品质控制方法.

  11. 产品曲面造型中仿生学与反求思想的结合运用%Bionics and Reverse Engineering Used in Product Curve Surface Modeling

    Institute of Scientific and Technical Information of China (English)

    陈哲; 庄苗

    2009-01-01

    随着生活水平的提高,消费者越来越期待亲和力强、曲面形态自然的产品的出现.文中提出了通过仿生学与反求工程两种设计思维的结合,在仿生学思想的指导下,利用反求工程方法得到产品的曲面形态的一种方法.

  12. 仿生群智能算法在生产调度中的应用综述%Application of Bionic Swarm Intelligence Algorithm to Production Scheduling: A Review

    Institute of Scientific and Technical Information of China (English)

    唐海波; 叶春明

    2010-01-01

    群智能算法是在观察和研究群居生物群体行为的基础上,提出的人工智能模拟模式,通过模拟群体中多个个体之间的简单协作实现问题的求解.在介绍群智能算法原理的基础上,综述并讨论了其在生产调度中的应用,为未来的研究提供了有意义的借鉴和参考.

  13. 基于“蝉蜕”语义的笔记本电脑仿生设计研究%Research on the Bionic Design of Laptop Computers Based on Product Semantics about Cicadas' Transmutation

    Institute of Scientific and Technical Information of China (English)

    朱炜; 杨明霞

    2013-01-01

    以自然界中蝉蜕现象为启示,从功能性仿生、形态性仿生、视觉形态性仿生3个方面分析了蝉蜕的“结构”、“形态”、“颜色”等生物特征,论述了“蝉蜕”过程在笔记本电脑仿生设计中的设计语义.在此基础上,对笔记本电脑进行形态、颜色、结构、材料的创新设计,提出了从产品语义出发的仿生设计方法,以为产品仿生设计提供新的思想、原理、方法和途径.

  14. Pseudo-3D Drawing of Robotic Fishes on 2D Simulation System for Underwater Bionic Robots%水中机器鱼仿真系统中的伪3D绘制

    Institute of Scientific and Technical Information of China (English)

    陈晓; 李淑琴; 谢广明

    2013-01-01

    关于水中机器鱼仿真系统设计问题,在二维仿真平台上,绘制具有碰撞特性和三维动态视觉效果的物体的技术实现比较难.因此,可结合仿真机器鱼比赛采用的2D仿真平台,提出鱼体关节的柔性体线建模和尾鳍相位变换等设计思想,采用GDI+技术,修复了平台原有的刚体建模导致的碰撞处理漏洞,为机器鱼仿真搭设了物理层映射到界面层的桥梁,有效减少了鱼体碰撞的穿越现象.实验证明,改进方法在实现三维效果方面可为水中机器鱼仿真系统优化提供支持.%To designing the simulation system of robotic fish under water, it is difficult to draw object with collision characteristics and 3D dynamic visual effect on the 2D simulation platform. Therefore, combined with the 2D simulation platform adopted by robofish competitions, this paper put forward the ideas of drawing flexible model of the fish's joint and caudal phase shift. Then by applying GDI + technology, the problem of collision caused by the Rigid Model of the platform before was resolved, which bridges physical layer and the interface layer for the robofish simulation and reduces the phenomenon of " crossing" in fish collision effectively. Experimental results prove that the improved method in realizing 3D effect can provide support for optimizing water machine fish simulation system.

  15. The U.K. Pushes the Boundaries of Bionics: Researchers and Engineers Are Making Great Strides Toward Advanced Prosthetics' Ultimate Goal-Mimicking the Functionality of a Real Limb.

    Science.gov (United States)

    Banks, Jim

    2016-01-01

    Using state-of-the-art technology, athletes at the Paralympic Games achieve great feats of physical prowess, but for most people using assistive and rehabilitative technologies (ART), even simple tasks can present huge challenges. Many do not make full use of the technology available to them because it is unreliable, uncomfortable, and nonintuitive, so researchers are pushing the envelope to create practical solutions that function like real limbs. PMID:27187534

  16. Structural bionic design for aircraft cover plate based on leaf vein branched structure%基于叶脉分枝结构的飞机盖板结构仿生设计

    Institute of Scientific and Technical Information of China (English)

    刘良宝; 陈五一

    2013-01-01

    针对薄壁件的轻量化设计要求,在对王莲叶脉分枝结构形态和构型规律分析基础上,以飞机盖板原型为对象,应用结构仿生设计方法,对盖板内部的筋板分布形式进行结构仿生设计,利用ANSYS APDL参数化设计语言建立仿生型结构的参数化模型并进行筋板结构参数优化.有限元分析结果表明,相对于原型盖板,结构参数优化后的仿生型盖板质量减小,比强度结构效能有较大提高,静力学性能明显改善.

  17. 野柿子树叶单宁的半仿生法提取及抗氧化性分析%Extraction of Tannins from Wild Persimmon Leaf with Semi-Bionic and Antioxidation Analysis

    Institute of Scientific and Technical Information of China (English)

    余先纯; 吴瑛; 韩大良

    2015-01-01

    采用半仿生法提取野柿子树叶单宁,对其提取工艺进行优化,并对其抗氧化能力进行检测.结果表明,采用半仿生法能够提高单宁对OH·、DPPH·和ABTS+·等自由基的清除能力,其IC50值均低于水浴加热法及酶法提取.正交试验优化得到的最佳工艺条件为提取温度40℃、提取时间60 min、溶剂体积分数50%、3次提取液pH分别为2.0、7.8和9.0以及原料粒度120目.在此条件下,单宁提取量可达206.8mg/g,远高于水浴加热法及酶法提取的样品.

  18. Research on Nanchang Environmental Monitoring Human Resources System Based on Bionics%基于管理仿生学的南昌环境监测人力资源体系研究

    Institute of Scientific and Technical Information of China (English)

    王海涛

    2008-01-01

    仿生生态学是管理学研究的一个前沿热点,具有多学科交叉的特征,通过机理仿生方法,来探讨事业单位发展的方式.可持续发展需要对管理进行绿色创新,文章以管理仿生学为基础构建了南昌环境监测站人力资源绿色创新的简单模型,研究并剖析了其体系框架及构成要素,具有一定的创新和启发意义.

  19. Research of the Modern Internal Management of the University Institution in a Bionic Systems Perspective%仿生系统视角下现代大学制度的内部治理结构研究

    Institute of Scientific and Technical Information of China (English)

    王耀华

    2011-01-01

    With the continual evolution and development of organisms in millions of years,the life forms continuously optimize and improve themselves.By enhancing their adaptation to the natural formation,the life forms eventually develop the perfect organizational structure,with efficient and feasible coordination.Similarly,as an excellent reference,it is also true for the internal management of human social organization.To establish a highly efficient internal governance of the university structure,the governor should establish the charter of the university.It is important to ensure the autonomy of higher education and the relative independence too.In order to implement the leadership under the Party,it is sensible to rationalize the parallel mechanism of academic and administrative management.It is also advisable to transfer due power and authority to executives to improve management and performance.%经过几亿年的进化与发展,生物体不断地优化与完善,形成其适应自然与外部环境的内部组织结构,各系统之间密切配合,形成和谐统一体,确保其运行过程的高效、有序,对人类社会组织的内部管理具有很好的借鉴作用。大学内部治理结构的完善,必须通过大学章程的建立,确保高校办学的自主权和相对独立性,真正落实党委领导下的校长负责制,实现指挥系统的统一性,理顺学术权力与行政权力的关系,通过权力中心适当下移和权力适当分散提高高校办学管理的水平与效能。

  20. 新的仿生优化算法:食物车-蟑螂群优化算法%New Bionics Optimization Algorithm: Food Truck-Cockroach Swarm Optimization Algorithm

    Institute of Scientific and Technical Information of China (English)

    程乐; 徐义晗; 张洪斌; 钱兆楼; 冯刚

    2010-01-01

    提出一种新的仿生优化算法--食物车-蟑螂群优化算法.该算法模拟蟑螂的觅食行为,通过食物车在解空间定义域内抛洒食物,吸引蟑螂向食物爬行,完成搜索.在求解过程中通过巢穴变迁、平等搜索和食物筛选等策略加强全局搜索和局部搜索能力,提高算法收敛速度.仿真实验结果表明,该算法寻优率高,收敛速度快.

  1. 均匀设计法优选金果榄半仿生提取工艺%Optimization of Semi-bionic Extraction Technology of Tinosporae Radix by Uniform Design

    Institute of Scientific and Technical Information of China (English)

    杨光义; 杜士明; 黄良永

    2010-01-01

    目的:优选金果榄药材半仿生提取(SBE)法的最佳工艺.方法:以盐酸巴马汀含量、盐酸药根碱含量和干浸膏得率的综合评价为指标,以3次煎煮用水的pH值和煎煮时间为考察因素,采用均匀设计法优选SBE法的最佳工艺.结果:优选的工艺为3次煎煮用水的pH值依次为4.0、6.5、9.0.煎煮时间依次为1.0、0.5、0.5h.结论:该工艺科学、合理,可为金果榄药效物质的提取工艺提供理论依据.

  2. 仿生六足机器人基于足力分布的位姿调整策略%Posture control strategy based on force distribution for bionic six-legged robot

    Institute of Scientific and Technical Information of China (English)

    刘海清; 刘玉斌; 张赫; 陈杰; 赵杰

    2012-01-01

    针对六足机器人非结构化地形稳定步行问题,研究了基于足力分布的位姿调整策略.通过力学分析建立了机器人任意步态模式下的足力分布模型,获得足底受力的平衡关系;采用重心位置调整策略实现了机器人步行过程中的位姿优化,来提高步行稳定性;并且建立了虚拟悬挂模型,采用足力补偿的方法对外界的扰动进行抑制,进一步提高机器人步行的稳定性.通过仿真验证了该调整策略对提高机器人步行稳定裕度的有效性.%This paper proposed a posture control strategy based on force distribution for the purpose of keeping the posture stability of six - legged robot when the robot was walking on irregular terrain. This strategy considered of establishing the force distribution model on any gait patterns to obtain the balance relationship of plantar forces, and adjusted COG (center of gravity) to achieve optimal posture control. Applied force compensation on the basis of a virtual suspension model to achieve disturbance rejection. This strategy could effectively improve the walking stability of robot on irregular terrain. Adams simulations verified the effectiveness of the control strategy to improve the robot walking stability margin.

  3. Constructive neuron networks classification algorithm based on bionic pattern recognition%基于仿生模式识别的构造型神经网络分类方法

    Institute of Scientific and Technical Information of China (English)

    陈启买; 周海晴

    2009-01-01

    从BP神经元模型和RBF神经元模型几何意义出发,将仿生模式识别理论引入到神经网络分类中,提出了一种基于仿生模式识别的构造型神经网络分类方法,通过构造不同结构神经元结合的神经网络,实现了对不同类样本在高维空间中形成的不同形状几何体的覆盖.实验证明该算法是非常有效的.

  4. 基于生态位古村落旅游竞争的仿生学研究%A Bionics Study on Tourism Competition of Niche Ancient Villages

    Institute of Scientific and Technical Information of China (English)

    方磊

    2013-01-01

    Ancient villages tourisms will compete strongly if they develop similarly because they lie in the same geo -graphic area , and have the same history and culture background .Based on n-dimensional niche theory , an evaluation index system of n -dimensional tourism niche is established with Delphi and AHP methods .According to Shannon -Weiner index , an ancient villages tourism niche evaluation model is proposed including niche breadth index and niche o -verlap index , which can determine the extent of competition .Finally, ancient villages such as Hongjian and Qingyan in Hunan province are used as examples to analyze .Results show a high tourism competition exists between the two ancient villages, mainly reflecting in the fight for resources , environment, market, service facilities four dimensions , but the tourism niche breadth has a larger expansion space .%处于同一区域的古村落,其历史渊源和文化内涵具有相似之处,如果旅游开发雷同极易致使过度竞争。本文借鉴n维生态位理论,运用Delphi法和主成分分析选取了古村落生态位的多维测度指标,建立了古村落n维旅游生态位指标体系;在香农-威纳多样性指数( Shannon-Weiner index)的基础上,构建了古村落旅游生态位的宽度指数和重叠指数模型,以此判断古村落旅游空间竞争的程度,并运用该模型对湖南洪江古商城和黔阳古城进行了分析,结果表明二者之间的竞争关系明显,主要体现在对资源、环境、市场、服务设施四个维度的争夺,但二者之间生态位宽度也有较大扩展空间。

  5. A novel bionic design of dental implant for promoting its long-term success using nerve growth factor (NGF): Utilizing nano-springs to construct a stress-cushioning structure inside the implant

    OpenAIRE

    He, Hao; YAO, YANG; Wang, Yanying; Wu, Yingying; Yang, Yang; Gong, Ping

    2012-01-01

    Summary The absence of periodontium causes masticatory load in excess of the self-repairing potential of peri-implant bone; peri-implant bone loss caused by occlusal overload is not uncommon in patients and greatly diminishes chances of long-term success. Regenerative treatments may be useful in inducing peri-implant bone regeneration, but are only stopgap solutions to the aftermaths caused by the imperfect biomechanical compatibility of the dental implant. Despite promising success, the tiss...

  6. Growth and Potential Damage of Human Bone-Derived Cells on Fresh and Aged Fullerene C-60 Films

    Czech Academy of Sciences Publication Activity Database

    Kopová, Ivana; Bačáková, Lucie; Lavrentiev, Vasyl; Vacík, Jiří

    2013-01-01

    Roč. 14, č. 5 (2013), s. 9182-9204. E-ISSN 1422-0067 R&D Projects: GA ČR(CZ) GAP107/11/1856 Institutional support: RVO:67985823 ; RVO:61389005 Keywords : carbon nanoparticles * cytotoxicity * tissue engineering Subject RIV: EI - Biotechnology ; Bionics; EI - Biotechnology ; Bionics (UJF-V) Impact factor: 2.339, year: 2013

  7. Design of a New Propulsion Mechanism of Imitating Duck’s Webbed-feet

    Directory of Open Access Journals (Sweden)

    Yuan Dai

    2013-08-01

    Full Text Available With the wide application of the underwater vehicle in ocean exploration, bionics propulsion aroused intensive interest among researchers. Bionic locomotion of aquatic animals has the advantages of highly maneuver, power-efficient endurance and so on. In the paper the mechanism of duck’s swimming is studied and a novel bionics propulsion mechanism is designed and analyzed. The mechanics of underwater vehicle is investigated by ADAMS. Dynamics response of the system is analyzed by using numerical method. The simulation results suggest that the designed propulsion mechanism can imitate the movement modes of the duck’s webbed feet, and implement the motion of vehicle in fluid environment.

  8. [Medical nanodevices].

    Science.gov (United States)

    Sugimachi, Masaru; Sunagawa, Kenji

    2006-02-01

    Development of implantable medical nanodevices enables us continuous automatic treatment of patients from inside of their body. Bionic devices, interfacing with neural systems and substituting native functions, such as bionic pacemaker, bionic pressure controller are candidates to miniaturize. For such miniaturization, efforts to reduce size of power supply (e.g., biological fuel cell) and to establish reliable high-throughput, low power telecommunication (e.g., spread spectrum telecommunication) are required. Simple devices such as pacemakers would benefit from miniaturization by lowering invasion and by developing a new usage such as ventricular resynchronization. PMID:16454192

  9. Electroactive Polymers (EAP) as Artificial Muscles: Reality and Challenges

    Energy Technology Data Exchange (ETDEWEB)

    Bar-Cohen, Yoseph (Jet Propulson Laboratory)

    2003-04-30

    Human with bionic muscles is synonymous with science fiction or a superhuman actor in a TV series. With bionic muscles, the character is portrayed as capable of strength and speeds that are far superior to human. Recent development in EAP with large electrically induced strain may one day be used to make such bionics possible. Meanwhile, as this technology evolves novel mechanisms that are biologically inspired are starting to emerge, where EAP materials are providing actuation with lifelike response and more flexible configurations. Even though the actuation force and robustness require further improvement, there have been already several reported successes. In this seminar the current and future efforts will be reviewed.

  10. The future of agriculture: agricultural transformation clustered greenfactories

    OpenAIRE

    Valero Ubierna, Constantino; Gutiérrez San José, Pablo; Riquelme Torres, María Teresa; Gil Quirós, Víctor; Ruiz García, Luis; Diezma Iglesias, Belen; Marin, Maria; Hernández Sánchez, Natalia; Rodriguez, Jose

    2005-01-01

    A forecast view of agricultural production is outlined inside a new type ofbuilding with photosynthetic walls and in vitro culture inside it. Recent advances in genetic engineering, nanoelectronics, biosensors and bionic building will make this futuristic type of greenhouse possible.

  11. Hyaluronic Acid-Coated Carbon Nonwoven Fabrics as Potential Material for Repair of Osteochondral Defects for medical applications

    Czech Academy of Sciences Publication Activity Database

    Rajzer, I.; Menaszek, E.; Bačáková, Lucie; Orzelski, M.; Blazewicz, M.

    2013-01-01

    Roč. 21, č. 3 (2013), s. 102-107. ISSN 1230-3666 Institutional support: RVO:67985823 Keywords : cartilage * carbon fibres * nonwoven scaffolds * hyaluronic acid Subject RIV: EI - Biotechnology ; Bionics Impact factor: 0.541, year: 2013

  12. The Effects of Pterostilbene on Neutrophil Activity in Experimental Model of Arthritis

    Czech Academy of Sciences Publication Activity Database

    Perečko, Tomáš; Drábiková, K.; Lojek, Antonín; Číž, Milan; Poništ, S.; Bauerová, K.; Nosál, R.; Harmatha, Juraj; Jančinová, V.

    -, č. 106041 (2013), 106041/1-106041/7. ISSN 2314-6133 Institutional support: RVO:68081707 ; RVO:61388963 Keywords : protein kinase C * adjuvant arthritis * rheumatoid arthritis * resveratrol Subject RIV: EI - Biotechnology ; Bionics

  13. Biodegradation of waste PET based copolyesters in thermophilic anaerobic sludge

    Czech Academy of Sciences Publication Activity Database

    Hermanová, S.; Šmejkalová, P.; Merna, J.; Zarevúcka, Marie

    2015-01-01

    Roč. 111, Jan (2015), s. 176-184. ISSN 0141-3910 Institutional support: RVO:61388963 Keywords : poly(ethylene terephthalate) * copolymers * sludge * biodegradation * hydrolysis * waste Subject RIV: EI - Biotechnology ; Bionics Impact factor: 3.163, year: 2014

  14. Are 3-D Movies Bad for Your Eyes?

    Medline Plus

    Full Text Available ... function in children, nor are there persuasive, conclusive theories on how 3-D digital products could cause ... AMD Jul 27, 2015 Argus II Retinal Prosthesis System: ‘Bionic Eye’ is Incredible Breakthrough but not Right ...

  15. Are 3-D Movies Bad for Your Eyes?

    Medline Plus

    Full Text Available ... System: ‘Bionic Eye’ is Incredible Breakthrough but not Right for Everyone Jun 30, 2015 Reading Glasses Without Exam? Jun 05, 2015 Follow The Academy Professionals: Education Guidelines News Multimedia Public & Patients: Contact Us About ...

  16. Analysis of solvent degradations in various heights of biofilter bed

    Czech Academy of Sciences Publication Activity Database

    Páca, J.; Weigner, P.; Koutský, B.; Sobotka, Miroslav

    Giardini NaxosTaormina : Associazione Italiana di Biocatalisi e Bioseparazioni, 1999. s. 309. [International Symposium on Biocatalysis and Biotransformations /4./. 26.09.1999-01.10.1999, Giardini Naxos-Taormina] Subject RIV: EI - Biotechnology ; Bionics

  17. Surface modification of Chlorella vulgaris cells using magnetite particles

    Czech Academy of Sciences Publication Activity Database

    Procházková, G.; Šafařík, Ivo; Brányik, T.

    2012-01-01

    Roč. 42, č. 2012 (2012), s. 1778-1787. ISSN 1877-7058 Institutional support: RVO:67179843 Keywords : microalgae * physicochemical approaches * surface interactions * magnetite * XDLVO theory * harvesting Subject RIV: EI - Biotechnology ; Bionics

  18. Degradation of nitrocompounds by transgenic plants expressing a bacterial nitroreductase gene

    Czech Academy of Sciences Publication Activity Database

    Kurumata, M.; Takahashi, M.; Sakamoto, A.; Ramos, J. L.; Nepovím, Aleš; Vaněk, Tomáš; Hirata, T.; Morikawa, H.

    Mátraháza, 2004. s. 54. [Phytoremediation: Environmental and Molecular Biological Aspects. 09.09.2004-12.09.2004, Mátraháza] Keywords : nitroreductase * TNT * enzyme activities Subject RIV: EI - Biotechnology ; Bionics

  19. Distribution of P, K, Ca, Mg, Cd, Cu, Fe, Mn, Pb and Zn in wood and bark age classes of willows and poplars used for phytoextraction on soils contaminated by risk elements

    Czech Academy of Sciences Publication Activity Database

    Zárubová, P.; Hejcman, M.; Vondráčková, S.; Mrnka, Libor; Száková, J.; Tlustoš, P.

    2015-01-01

    Roč. 22, č. 23 (2015), s. 18801-18813. ISSN 0944-1344 Institutional support: RVO:67985939 Keywords : phytoremediation * heavy metals * Salicaceae Subject RIV: EI - Biotechnology ; Bionics Impact factor: 2.828, year: 2014

  20. Are 3-D Movies Bad for Your Eyes?

    Medline Plus

    Full Text Available ... Answers Free Newsletter Get ophthalmologist-reviewed tips and information about eye ... 27, 2015 Argus II Retinal Prosthesis System: ‘Bionic Eye’ is Incredible Breakthrough but not Right ...