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Articles de revues sur le sujet « Multifunctional structure »

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Auteur : Grafiati
Publié le 14 mars 2023

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1

Yang, Xuechun, et Maojun Wang. « Diversification and Spatial Differentiation of Villages’ Functional Types in the New Period of China : Results from Hierarchical Urban-Rural Spatial Relations and Townships Size ». Land 11, no 2 (21 janvier 2022) : 171. http://dx.doi.org/10.3390/land11020171.

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In recent years, in rural geographic studies, the topic of multifunctions of rural areas has been gaining increasing interest, especially in China, which, as an agricultural power, is undergoing new urbanization and rural revitalization. As far as China is concerned, to classify administrative villages from the perspective of their functions will contribute to scientifically guiding the configuration of urban-rural factors in terms of different regions and villages multifunctional types. This paper takes 3042 administrative villages of Tai’an city of Shandong province in eastern China as its basic study units and establishes a mapping system between land use types and rural territorial sub-functions, identifies their multifunctional types via cluster analysis, quantitatively analyzes their influencing factors with multivariate logistic regression, and summarizes their spatial structure characteristics. The results show that: 3042 administrative villages in Tai’an city can be functionally classified into seven types. The village multifunctional types are jointly decided by cities and natural production conditions. The distribution of all types of villages shows a “non-agricultural production to agricultural production” outward expansion structure. Our study can expand the research contents and methods of rural territorial multifunction.
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Yoder, Marilyn D., Leonard M. Thomas, Jacqueline M. Tremblay, Randall L. Oliver, Lynwood R. Yarbrough et George M. Helmkamp. « Structure of a Multifunctional Protein ». Journal of Biological Chemistry 276, no 12 (4 décembre 2000) : 9246–52. http://dx.doi.org/10.1074/jbc.m010131200.

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Carceanu, Irina, G. Cosmeleata, Angela Popa, Ioan Nedelcu, E. Jalbă, P. Manicatide Neagu et I. Roceanu. « Complex Multifunctional Materials for Special Applications ». Advanced Materials Research 47-50 (juin 2008) : 718–21. http://dx.doi.org/10.4028/www.scientific.net/amr.47-50.718.

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Elaboration of complex multifunctional materials with nanometric structure and controlled characteristics for special applications, implies the use of advanced techniques of powder metallurgy such as mechanical alloying, allowing the structural modeling and designing of material properties. The aims of paper consist in the development of complex multifunction materials with nanometric structure for special use (civil and/or military) for industrial applications. The paper presents briefly some aspect regarding the present stage in production of homogenous mixtures of W-Ni-Cu powders system for manufacturing the materials made of heavy alloys type.
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Bemanian, Mohammad Reza, Mohammadjavad Mahdavinejad, Ali Karam et Shahabeddin Ramezani. « Application of Combined-Scale Smart Structures as a Necessity for Multifunctional Spaces ». Advanced Materials Research 403-408 (novembre 2011) : 4132–36. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.4132.

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Suitable applications of smart structures for multifunctional spaces are going to be found by this paper. Logical argumentation research method is applied to identify a special smart structure which its features match to architectural requirements of multifunctional spaces. Hence, the smartness of architectural structures has two distinct scales: nanoscale and real scale, the application of these structures is based on two scales. Nanoscale smart structures have the capabilities which differ from real-scale smart structures. The analysis of features of multifunctional spaces shows that these kinds of spaces require structures which are smart both in nanoscale and real scale. As a result, combined-scale smart structures are recommended for multifunctional spaces.
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Hao, Dong, Lin Zhang, Jing Yu et Daiyong Mao. « Dynamic characteristics of multifunctional structure for spacecraft ». Proceedings of the Institution of Mechanical Engineers, Part G : Journal of Aerospace Engineering 233, no 2 (13 novembre 2017) : 679–85. http://dx.doi.org/10.1177/0954410017740384.

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The minimum cost is an important aspect of the spacecraft design. A proposed approach is the multifunctional structure technology, which fully integrates subassemblies and performs both structural and other functions for spacecraft. By combining the structural and functional subsystems into a single unit, the mass and volume savings can be realized. In order to investigate the dynamical properties of the multifunctional structure, which contains viscoelastic components, sine-sweep tests and random vibrations are carried out in present paper. The experimental results show that the multifunctional structure could survive the vibration environment. The first resonance frequency decreases with increment of the testing levels, and the base frequency of the multifunctional structure is larger than 100 Hz for all tested loading cases, meeting the frequency requirement for most spacecraft platforms. The multifunctional structure in this paper has successfully combined the structural and battery function, indicating potential for future lightweight and cost-saving spacecraft application.
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Fujiyoshi, Y. « Structure and function of multifunctional channels ». Acta Crystallographica Section A Foundations of Crystallography 64, a1 (23 août 2008) : C6. http://dx.doi.org/10.1107/s0108767308099820.

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Aglietti, G. S., C. W. Schwingshackl et S. C. Roberts. « Multifunctional Structure Technologies for Satellite Applications ». Shock and Vibration Digest 39, no 5 (1 septembre 2007) : 381–91. http://dx.doi.org/10.1177/0583102407077397.

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POPA, COSMIN. « MULTIFUNCTIONAL CMOS STRUCTURE WITH IMPROVED LINEARITY ». Journal of Circuits, Systems and Computers 20, no 07 (novembre 2011) : 1261–75. http://dx.doi.org/10.1142/s0218126611007876.

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An original low-power low-voltage multifunctional structure with improved performances will be further presented, allowing to implement (with minor changes in the design) four important functions: the signal gain with theoretical null distortions, voltage multiplying with very good linearity and simulation of a perfect linear resistor with both positive and negative equivalent resistance. The linearity will be strongly increased by implementing original techniques, while the silicon occupied area per function will be reduced as a result of the circuit multifunctionality. The structure is implemented in 0.35 μm CMOS technology and is supplied at ±3 V. The circuit presents a very good linearity (THD < 0.1% for differential amplifier and active resistors and THD < 0.15% for multiplier), correlated with an extended range of the input voltage (-1.5 V < v1 - v2 < 1.5 V ). The tuning range of the active resistor is about 100kΩ – 1.5MΩ. The second-order effects are also considered, being proposed an original technique based on an anti-parallel connection for compensating the linearity degradation introduced by these effects.
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9

Zhang, X. J., et B. W. Matthews. « EDPDB : a multifunctional tool for protein structure analysis ». Journal of Applied Crystallography 28, no 5 (1 octobre 1995) : 624–30. http://dx.doi.org/10.1107/s0021889895001063.

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EDPDB is a Fortran program that simplifies the analysis of protein structure and makes it easy to extract various types of geometrical and biologically relevant information for the molecule both in isolation as well as in its crystallographic context. EDPDB offers a large set of functions by which the user can evaluate, select and manipulate the coordinates of protein structures. Types of calculation available include the determination of solvent accessibility, bond lengths and torsion angles, determination of the van der Waals volume of a group of atoms, determination of the best-fit plane through a set of points, evaluation of crystal contacts between a molecule in a crystal and all symmetry-related molecules, and the determination of `hinge-bending' motion between protein domains. It is also possible to compare different structures, to perform coordinate manipulations and to edit coordinate files. The program augments the graphic analysis of protein structure by allowing the user to construct a simple set of commands that will rapidly screen an entire structure. It may also make special purpose analyses feasible without complicated programming.
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Lukyanov, Boris, Gennadii Vasilyuk, Eugene Mukhanov, Leonid Ageev, Maria Lukyanova, Yury Alexeenko, Serguei Besugliy et Valeri Tkachev. « Multifunctional Spirocyclic Systems ». International Journal of Photoenergy 2009 (2009) : 1–6. http://dx.doi.org/10.1155/2009/689450.

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New spiropyrans with different substituents in the benzopyran fragment have been synthesized and investigated. It was shown that introduction of aldehyde group in the structure of spiropyrans gives a possibility to obtain new functionalized compounds. Effects of the substituents on the photochromic behavior were studied.
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Wu, Jun Hui, Quan Zhou, Qiang Zhou, Jie Chen, Hui Ping Si, Kai Yan Lin et Chi Bin Zhang. « Heat Design of Multi-Functional Structure of Electronic Equipment with Material Properties in Control System ». Advanced Materials Research 625 (décembre 2012) : 159–66. http://dx.doi.org/10.4028/www.scientific.net/amr.625.159.

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In this paper, the multifunctional structure was designed in electronic equipment of the control system, reducing the weight in the housings of the electronic equipment, wire and cable. The functions of thermal design and dynamic design and protection design were completed by using structure. The qualitative analysis of the center control unit structure model was done. Thermal analysis and the thermal design of the multifunctional electronic equipment structure were finished on the basis of the thermal design principles and attention of the matters. The cooling capacity was increased by fin structure with the cold plate. The modeling analyses of the same multi- functional structure with different fin spacing and height were completed in Icepak. The curves of the maximum temperature for the multi-functional structures corresponding to a group of fin height were got. The high-power MCM chip was placed in the middle of the multifunctional structure, and the remaining low-power chips were distributed around, which can reduce the thermal coupling of the chip, reducing the overall temperature of the multi-functional structure effectively, which has certain theoretical significance to the design of today’s electronic devices.
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12

Li, Donghao, et Kai-Da Xu. « Multifunctional Switchable Filter Using Coupled-Line Structure ». IEEE Microwave and Wireless Components Letters 31, no 5 (mai 2021) : 457–60. http://dx.doi.org/10.1109/lmwc.2021.3067893.

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Wang, Yang, et Chao Yi Peng. « Thermal Analysis of Multifunctional Satellite Structure-Battery ». Advanced Materials Research 450-451 (janvier 2012) : 228–34. http://dx.doi.org/10.4028/scientific5/amr.450-451.228.

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Wang, Yang, et Chao Yi Peng. « Thermal Analysis of Multifunctional Satellite Structure-Battery ». Advanced Materials Research 450-451 (janvier 2012) : 228–34. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.228.

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To make the rapidly developing micro-satellite further smaller and lighter, based on gel polymer lithium-ion battery and high thermal conductivity carbon fiber reinforced epoxy resin composites and polymethacrylimide (PMI) foam, a kind of multifunctional satellite structure-battery (SB) is designed in the paper, and an investigation of its thermal property in certain working environments is carried out by numerical simulation approach. The role of two parameters, longitudinal thermal conductivity of carbon fibers and the heat dissipation area, play in the temperature distribution while the SB is working, is analyzed. The result shows that, enlarging the heat disspation area is an effective way to decrease the maximum temperature of SB and it also implys that by selecting the two parameters carefully, the largest temperature rising of the SB could be considerably lowered, alleviating the burden of satellite thermal control subsystem.
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15

Kim, Hak Sung, Jin Sung Kang, Jong Se Park, H. Thomas Hahn, Hyun Chul Jung et Jae Woo Joung. « Inkjet printed electronics for multifunctional composite structure ». Composites Science and Technology 69, no 7-8 (juin 2009) : 1256–64. http://dx.doi.org/10.1016/j.compscitech.2009.02.034.

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Thomas, JP, SM Qidwai, WR Pogue et GT Pham. « Multifunctional structure-battery composites for marine systems ». Journal of Composite Materials 47, no 1 (8 octobre 2012) : 5–26. http://dx.doi.org/10.1177/0021998312460262.

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Huang, Y. S., C. Jing, X. D. Sun, Y. L. Zhang, Z. Li, M. F. Ye et Y. N. Wu. « Structure and Multifunctional Properties of Co50V33Ga16Sb1 Alloy ». JOM 71, no 9 (9 juillet 2019) : 3129–34. http://dx.doi.org/10.1007/s11837-019-03628-z.

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18

Queheillalt, Douglas T., Gerardo Carbajal, G. P. Peterson et Haydn N. G. Wadley. « A multifunctional heat pipe sandwich panel structure ». International Journal of Heat and Mass Transfer 51, no 1-2 (janvier 2008) : 312–26. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.03.051.

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19

Shleptsova, Alina Yu. « Structure and architectural appearance of cruise ports ». Stroitel'stvo : nauka i obrazovanie [Construction : Science and Education] 11, no 3 (30 septembre 2021) : 41–57. http://dx.doi.org/10.22227/2305-5502.2021.3.3.

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Introduction. The purpose of this study is to identify principles and trends in the construction and architecture of cruise ports. Presently, Soviet-era seaport buildings fail to meet cruise tourism development requirements and current norms and standards applicable to this type of structures. Today Russian seaports are limited to solely one function, that is, transportation of passengers, whereas abroad such structures have been transformed into multifunctional complexes. Materials and methods. Theoretical analysis of scientific literature, graphic materials, and written sources were used. The research methods include systematic, spatial, and socio-functional approaches. Results. The article presents the history of formation of the architectural appearance and the functional purpose of cruise ports. It specifies principal requirements and design standards for similar structures, as well as their integration into the mo­dern urban environment. The co-authors offer solutions to relevant problems, related to the architecture of seaport buildings in Russia, using a number of selected international design cases of multifunctional marine complexes. Conclusions. By transforming obsolete buildings of seaports multifunctional complexes, we end up with a new level of structures. The competent architectural planning structure will allow urban authorities to create interesting facilities that bring not only transport, but also commercial, recreational and social benefits to the city. The structure and architectural appearance of a cruise port must be designed with regard for contemporary design standards and encompass a wide range of functional, technical, urban planning, artistic and aesthetic requirements.
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Johnston, William, Pulitha Godakawela Kankanamalage et Bhisham Sharma. « 3D printed multifunctional, load-bearing, low-frequency sound absorbers ». INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no 1 (1 août 2021) : 5605–10. http://dx.doi.org/10.3397/in-2021-3177.

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Cellular porous materials are an attractive choice for lightweight structural design. However, though their open porous architecture is ideally suited for multifunctional applications, their use is typically limited by the pore sizes achievable by traditional as well as advanced fabrication processes. Here, we present an alternative route towards overcoming this pore size limitation by leveraging our recent success in printing fibrous structures. This is achieved by superimposing a fibrous network on a load-bearing, open-celled porous architecture. The multifunctional structure is 3D printed using a novel technique that enables us to simultaneously print a load-bearing scaffold and the necessary fibrous network. The acoustic properties of the printed structures are tested using a normal-incidence impedance tube method. Our results show that such structures can provide very high absorption at low frequencies while retaining the mechanical performance of the underlying architected structure.
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Schubert, Martin, et Anthanasios Dafnis. « Multifunctional load-bearing aerostructures with integrated space debris protection ». MATEC Web of Conferences 304 (2019) : 07003. http://dx.doi.org/10.1051/matecconf/201930407003.

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In the project multiSat multifunctional composite structures for satellite application have been developed. Functions such as protection against space debris, radiation shielding and passive thermal control have been integrated into the load-bearing composite spacecraft structure by use of suitable materials and components. Sandwich panels have been studied as representative structural parts of a conventional satellite structure. Measures for increased space debris protection include the substitution of the conventional honeycomb core by 3D-printed aluminum cellular structures and the reinforcement of the sandwich panel by integration of high performance fabrics which effectively break up and catch impacting debris particles. This paper describes the development and design of multifunctional sandwich concepts with increased impact protection capability and presents the experimental results of hypervelocity impact testing with different types of CFRP sandwich panels.
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Kolodin, Konstantin, Petr Cherepanov et Ekaterina Anatol'evna Skurlatova. « Fundamentals of shaping a pedestrian street as an object in the form of a multifunctional complex ». Урбанистика, no 3 (mars 2022) : 8–23. http://dx.doi.org/10.7256/2310-8673.2022.3.38486.

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This article examines the architectural and spatial organization of a pedestrian street, presented as an object in the form of a multifunctional complex. The subject of the study is the architectural and typological features of the components of a multifunctional pedestrian street. The novelty of the approach lies in the representation of the street as an integral object in the form of a multifunctional complex in the structure of the residential quarter of St. Petersburg. The article also contains a systematic analysis of architectural planning, urban planning and compositional solutions for objects of this type. The analysis is based on combining the principle of operation of a pedestrian street with the criteria of multifunctionality. The main section of this study is devoted to an overview of the structure of diversified objects included in the pedestrian street building. The scientific novelty of the work consists in considering a pedestrian street as an independent object in the form of a multifunctional complex incorporated into the structure of a residential quarter. For this purpose, the project "Multifunctional Street in the structure of the Lenexpo quarter" (St. Petersburg) was carried out by the Bachelor of Architecture Peter Dmitrievich Cherepanov under the guidance of Konstantin Ivanovich Kolodin, Associate Professor of the Department of Architectural Design of the St. Petersburg State University of Architecture and Civil Engineering (SPbGASU). On the basis of the completed project, a typology of objects combined into a multifunctional complex was formulated. The project was developed taking into account the multisectoral unification, as well as taking into account the principles of modular structuring of space and the construction of individual buildings and structures. The mechanism of the pedestrian street operation was calculated, which was reflected in architectural planning and spatial solutions when designing this complex. According to the content of the main sections of the study, conclusions were formulated that take into account the prospects for the development of such architectural objects in the future.
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Shin, Woohyeon, Jun Seop Kim, Heesung Kim, Hui Ju Choi, Hee Jung Lee, Moon Kwang Um, Moon Kee Choi et Kyeongwoon Chung. « Material Design for 3D Multifunctional Hydrogel Structure Preparation ». Macromolecular Materials and Engineering 306, no 5 (26 mars 2021) : 2100007. http://dx.doi.org/10.1002/mame.202100007.

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Geng, Jin Liang. « Structure Design and Control for Multifunctional Paint-Device ». Advanced Materials Research 1044-1045 (octobre 2014) : 868–72. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.868.

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In view of the traditional way of painting by using brush, wearing protective clothing and breathing harmful gas, etc. problems, The bottleneck of traditional manual approach to health, safety and social progress should be solved. By analyzing the relationship between innovative structure, strength analysis, recycling of resources and environmental protection,A comprehensive solution is put forward which includes the structure design of quadruple adjustment and twofold recycling, integration of roll-spray, automatic control and frequency conversion for speed regulation. The results of the enterprise’s practical application indicate that this device is effective on ensuring human health, environmental protection, resource utilization, improving productivity and creating economic benefit, Its market application prospect is very broad.
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Kindrachuk, J., et S. Napper. « Structure-Activity Relationships of Multifunctional Host Defence Peptides ». Mini-Reviews in Medicinal Chemistry 10, no 7 (1 juin 2010) : 596–614. http://dx.doi.org/10.2174/138955710791383983.

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Balcı, Erdem, Ünal Özden Akkuş et Savas Berber. « Controlling topological electronic structure of multifunctional MXene layer ». Applied Physics Letters 113, no 8 (20 août 2018) : 083107. http://dx.doi.org/10.1063/1.5042828.

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Beziuk, Grzegorz, Thomas C. Baum, Kamran Ghorbani et Kelvin J. Nicholson. « RF Signal Multiplexer Embedded Into Multifunctional Composite Structure ». IEEE Transactions on Microwave Theory and Techniques 67, no 12 (décembre 2019) : 4935–43. http://dx.doi.org/10.1109/tmtt.2019.2944616.

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Li, Dong-Xu, Wang Liu et Dong Hao. « Vibration Antiresonance Design for a Spacecraft Multifunctional Structure ». Shock and Vibration 2017 (2017) : 1–10. http://dx.doi.org/10.1155/2017/5905684.

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Spacecraft must withstand rigorous mechanical environment experiences such as acceleration, noise, vibration, and shock during the process of launching, satellite-vehicle separation, and so on. In this paper, a new spacecraft multifunctional structure concept designed by us is introduced. The multifunctional structure has the functions of not only load bearing, but also vibration reduction, energy source, thermal control, and so on, and we adopt a series of viscoelastic parts as connections between substructures. Especially in this paper, a vibration antiresonance design method is proposed to realize the vibration reduction. The complex zero-point equations of the vibration system are firstly established, and then the vibration antiresonance design for the system is achieved. For solving the difficulties due to viscoelastic characteristics of the connecting parts, we present the determining formulas to obtain the structural parameters, so that the complex zero-point equations can be satisfied. Numerical simulation and ground experiment demonstrate the correctness and effectiveness of the proposed method. This method can solve the structural vibration control problem under the function constraints of load bearing and energy supplying and will expand the performance of spacecraft functional modules.
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Cao, Jian, Jinghai Yang, Yongjun Zhang, Lili Yang, Yaxin Wang, Dandan Wang, Ming Gao, Yang Liu, Xiaoyan Liu et Zhi Xie. « Multifunctional Zn0.99−xMn0.01CuxS nanowires : Structure, luminescence and magnetism ». Materials Research Bulletin 45, no 6 (juin 2010) : 705–9. http://dx.doi.org/10.1016/j.materresbull.2010.02.015.

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Cheever, Matthew L., Jason T. Snyder, Svetlana Gershburg, David P. Siderovski, T. Kendall Harden et John Sondek. « Crystal structure of the multifunctional Gβ5–RGS9 complex ». Nature Structural & ; Molecular Biology 15, no 2 (20 janvier 2008) : 155–62. http://dx.doi.org/10.1038/nsmb.1377.

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Zok, Tomasz, Maciej Antczak, Michal Zurkowski, Mariusz Popenda, Jacek Blazewicz, Ryszard W. Adamiak et Marta Szachniuk. « RNApdbee 2.0 : multifunctional tool for RNA structure annotation ». Nucleic Acids Research 46, W1 (30 avril 2018) : W30—W35. http://dx.doi.org/10.1093/nar/gky314.

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Yu, Chang-An, Li Zhang, Kai-Ping Deng, Hna Tian, Di Xia, Hoeon Kim, Johann Deisenhofer et Linda Yu. « Structure and reaction mechanisms of multifunctional mitochondrial cytochromebc1complex ». BioFactors 9, no 2-4 (1999) : 103–9. http://dx.doi.org/10.1002/biof.5520090204.

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Shen, Lihao, Yongqiang Pang, Leilei Yan, Quan Li et Shaobo Qu. « Multifunctional sandwich structure designed for broadband reflection reduction ». AEU - International Journal of Electronics and Communications 96 (novembre 2018) : 75–80. http://dx.doi.org/10.1016/j.aeue.2018.09.018.

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Capovilla, Giorgio, Enrico Cestino, Leonardo M. Reyneri et Giulio Romeo. « Design of a multifunctional composite structure for modular CubeSat applications ». MATEC Web of Conferences 304 (2019) : 07001. http://dx.doi.org/10.1051/matecconf/201930407001.

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CubeSats primary structures are usually made with aluminium alloys, with few examples of CFRP primary structures under study. Power system battery arrays usually occupy spacecraft internal volume and mass that should be available to the payload. A CFRP structural/battery array configuration has been designed, allowing to integrate the electrical power system in the bus primary structure. Its configuration has been developed with the modular design philosophy of the AraMiS CubeSat. It is sized as a tile, mounted on an external face of the 1U CubeSat. It accommodates two solar cells, while the opposite face accommodates power system circuitry. Following a cellular structure concept, a set of commercial LiPo batteries has been placed between two CFRP panels and spaced out with CFRP ribs. Compliance with launch mechanical loads has been evaluated with a finite element analysis. A preliminary thermal analysis has been performed to simulate a LEO orbit environment. The results indicate that even with a low degree of structural integration, more volume and mass can be allocated to the payload, with respect to traditional, functionally separated designs in aluminium alloy. The low degree of integration allows to employ relatively cheap, commercial off-the-shelf components.
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EFTALEA, CĂRPUS, MIHAI CARMEN, DOROGAN ANGELA et BIRLIBA IULIA. « Correlation study of multifunctional knitted textile structures characteristics ». Industria Textila 68, no 02 (1 mars 2017) : 131–37. http://dx.doi.org/10.35530/it.068.02.1271.

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Textile systems used to improve people’s health monitoring abilities are the result of research and innovation of multidisciplinary teams. In this case, the nature of design may involve: solving of the practical problems, execution of decisions; application of science, heuristic search; creativity and imagination, knowledge transfer and transformation; data collection and processing; drawing and calculation. An important/key factor about making of the design decision – providing flexible, interactive textile structures that can be used as attachment element of monitoring devices in known for the linkages potential between product characteristics. Using SPSS (Statistical Package for the Social Sciences), the paper shows the correlations that can be taken into account in determining the structure and shape of anatomical knitted structure processed on seamless type knitting system.
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Shyshkin, E., Y. Haiko, V. Ivasenko et A. Starostina. « TYPOLOGICAL CHARACTERISTICS OF MULTIFUNCTIONAL SPORTS COMPLEXES (Part I) ». Municipal economy of cities 3, no 170 (24 juin 2022) : 174–80. http://dx.doi.org/10.33042/2522-1809-2022-3-170-174-180.

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The article gives a classification of sports and modern multifunctional sports complexes. The terminology of the concept of multifunctional sports complex has been unified. The analysis of modern domestic and foreign multifunctional sports complexes is carried out that allows to define a number of obvious tendencies of development of the sports environment. The construction of sports facilities is included in the general plans of cities in the form of microdistricts, districts and cities. A study of the development of modern sports complexes. Trends in the development of the spatial structure of the sports environment have been identified. The sports infrastructure of Ukraine is analyzed for the possibility of holding international sports competitions. It is determined that according to the existing norms and rules, all multifunctional sports facilities can be divided into main, auxiliary and devices-devices for spectators. The classification of multifunctional sports complexes by location in the structure of the city is given. Multifunctional buildings are, if possible, adapted for various sports. In order to determine the role and place of multifunctional sports complexes in the structure of the city, sports centers available in natural and urban areas were analyzed. The basic requirements to be presented to modern sports complexes at designing are defined. The work consists of two parts. In the first part, the development of the sports environment is studied and the classification of modern sports complexes is given. In the second part, the features of the typological characteristics of multifunctional sports complexes are formulated.
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Fernandez, Lissette, et Steven F. Wojtkiewicz. « Multifunctional Design of Vibrational Energy Harvesters in a Bridge Structure ». Sustainability 14, no 24 (9 décembre 2022) : 16540. http://dx.doi.org/10.3390/su142416540.

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This paper aims to integrate vibrational energy harvesters into bridge structures in a holistic fashion that can lessen energy demands for safe bridge operation thus potentially increasing their sustainability. Computationally efficient methodologies, that target the locality of the connection of the harvesters, are utilized to determine optimal harvester frequencies that maximize the total power generation of installed vibrational energy harvesters. Previous findings from the authors indicate that a distributed configuration of harvesters can generate equal or more power than one traditional large harvester when attached to a building structure with total equivalent harvester mass. This paper investigates whether those findings also apply to bridge structures. Results from a cable-stayed bridge model equipped with two or more harvesters along its deck are presented and discussed. Distributed gardens are investigated as a means to integrate the harvester mass with the pre-existing bridge structure. It is found that an equivalent, slightly larger, amount of power is captured by the distributed garden design compared to a single pair of large harvesters placed near the center of the bridge. This performance is very promising as the distributed garden design would enable the enhancement of the structure’s aesthetics while also potentially creating ecological and environmental benefits.
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Siglreitmeier, Maria, Baohu Wu, Tina Kollmann, Martin Neubauer, Gergely Nagy, Dietmar Schwahn, Vitaliy Pipich et al. « Multifunctional layered magnetic composites ». Beilstein Journal of Nanotechnology 6 (12 janvier 2015) : 134–48. http://dx.doi.org/10.3762/bjnano.6.13.

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A fabrication method of a multifunctional hybrid material is achieved by using the insoluble organic nacre matrix of the Haliotis laevigata shell infiltrated with gelatin as a confined reaction environment. Inside this organic scaffold magnetite nanoparticles (MNPs) are synthesized. The amount of MNPs can be controlled through the synthesis protocol therefore mineral loadings starting from 15 wt % up to 65 wt % can be realized. The demineralized organic nacre matrix is characterized by small-angle and very-small-angle neutron scattering (SANS and VSANS) showing an unchanged organic matrix structure after demineralization compared to the original mineralized nacre reference. Light microscopy and confocal laser scanning microscopy studies of stained samples show the presence of insoluble proteins at the chitin surface but not between the chitin layers. Successful and homogeneous gelatin infiltration in between the chitin layers can be shown. The hybrid material is characterized by TEM and shows a layered structure filled with MNPs with a size of around 10 nm. Magnetic analysis of the material demonstrates superparamagnetic behavior as characteristic for the particle size. Simulation studies show the potential of collagen and chitin to act as nucleators, where there is a slight preference of chitin over collagen as a nucleator for magnetite. Colloidal-probe AFM measurements demonstrate that introduction of a ferrogel into the chitin matrix leads to a certain increase in the stiffness of the composite material.
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Gao, Hao, Ze-Wei Wang, Zi-Xiang Xu, Jing Yang, Bin Liang et Jian-Chun Cheng. « Deep learning-assisted multifunctional wavefront modulation with Willis coupling ». Applied Physics Letters 121, no 11 (12 septembre 2022) : 113501. http://dx.doi.org/10.1063/5.0095217.

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Diverse wavefront modulations with multifunctional acoustic devices have been of great interest to physics and engineering communities. However, traditional design methods of multifunctional acoustic devices rely on a deterministic physical model and redundant iterative optimization, resulting in inflexibility and consuming of time. In this work, we present and experimentally implement a deep learning-assisted tunable acoustic metagrating for multifunctional wavefront modulation with 95.2% accuracy and a 105 order of magnitude decrease in computational time compared to a classical optimization method. The presented tunable structure formed by a periodic array of 3C-shaped unit cells excites controllable Willis coupling, exhibiting corresponding asymmetrical scattering patterns. With the support of a deep learning strategy, the optimal configuration between structure parameters and Willis coupling magnitude could be efficiently confirmed, realizing various extraordinary wavefront modulations, including abnormal reflection, perfect beam splitting, and multi-channel energy distribution in arbitrary ratios. The polarizability tensor retrieval method is used to characterize the Willis coupling of different modulation structures, demonstrating the refined abstraction of the deep learning strategy on Willis coupling. Meanwhile, the numerical and experimental results are in good agreement with the desired wavefront modulation, verifying the effectiveness of the proposed method. Our work develops deep learning-assisted multifunctional wavefront modulation with the advantages of high accuracy, efficiency, flexibility, and refined abstraction of a physical mechanism, paving the way for a combination of deep learning and pragmatic multifunctional acoustic applications.
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Formentin, Sara Mizar, Giuseppina Palma, Pasquale Contestabile, Diego Vicinanza et Barbara Zanuttigh. « 2DV RANS-VOF NUMERICAL MODELING OF A MULTI-FUNCTIONAL HARBOUR STRUCTURE ». Coastal Engineering Proceedings, no 35 (23 juin 2017) : 3. http://dx.doi.org/10.9753/icce.v35.structures.3.

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This paper is focused on the analysis of a multifunctional structure developed by the Second University of Naples, named OBREC, which is an Overtopping Breakwater for Energy Conversion. The hydraulic and structural performance are evaluated by means of the 2DV numerical model IH-2VOF developed by the University of Cantabria, in terms of average discharge rate, wave reflection coefficient and pressures acting on the structure. The results are compared with the laboratory experiments carried out at Aalborg University (Denmark) and with recent formulae and a new Artificial Neural Network. Furthermore, the numerical model is used to obtain information related to the wave loadings where experimental data were not available. This numerical analysis is a useful support to the ongoing monitoring of the prototype installation in the port of Naples.
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Capovilla, Giorgio, Enrico Cestino, Leonardo M. Reyneri et Giulio Romeo. « Modular Multifunctional Composite Structure for CubeSat Applications : Preliminary Design and Structural Analysis ». Aerospace 7, no 2 (24 février 2020) : 17. http://dx.doi.org/10.3390/aerospace7020017.

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CubeSats usually adopt aluminum alloys for primary structures, and a number of studies exist on Carbon Fiber Reinforced Plastic (CFRP) primary structures. The internal volume of a spacecraft is usually occupied by battery arrays, reducing the volume available to the payload. In this paper, a CFRP structural/battery array configuration has been designed in order to integrate the electrical power system with the spacecraft bus primary structure. The configuration has been designed according to the modular design philosophy introduced in the AraMiS project. The structure fits on an external face of a 1U CubeSat. Its external side houses two solar cells and the opposite side houses power system circuitry. An innovative cellular structure concept has been adopted and a set of commercial LiPo batteries has been embedded between two CFRP panels and spaced out with CFRP ribs. Compatibility with launch mechanical loads and vibrations has been shown with a finite element analysis. The results suggest that, even with a low degree of structural integration applied to a composite structural battery, more volume and mass can be made available for the payload, with respect to traditional, functionally separated structures employing aluminum alloy. The low degree of integration is introduced to allow the use of relatively cheap and commercial-off-the-shelf components.
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Schubert, Martin, Sara Perfetto, Anthanasios Dafnis, Heiko Atzrodt et Dirk Mayer. « Multifunctional and lightweight load-bearing composite structures for satellites ». MATEC Web of Conferences 233 (2018) : 00019. http://dx.doi.org/10.1051/matecconf/201823300019.

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Within the framework of the German national project multiSat multifunctional composite structures for satellite applications are developed. The objective is the integration of passive and active functions into the load-bearing spacecraft structure by using suitable materials, components and mechanisms. The passive functions include heat transfer, radiation shielding and protection against space debris impacts, whereas the active functions comprise electric energy and data transfer and vibration reduction. Due to their multi-layer build-up composite materials are suitable for functional integration since each layer can be defined and designed to provide one or more specific functions. The concept of a multifunctional structure allows for the reduction of the overall satellite mass and of installation space required for subsystems. It also opens up new opportunities for highly integrative and standardized production processes and lower total costs and time for manufacturing, qualification and launch. This paper describes the development and design of a concept for a multifunctional sandwich panel and the results of the analyses, numerical simulations and experiments conducted at coupon level.
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Mikoshiba, Kota, James M. Manimala et CT Sun. « Energy harvesting using an array of multifunctional resonators ». Journal of Intelligent Material Systems and Structures 24, no 2 (23 septembre 2012) : 168–79. http://dx.doi.org/10.1177/1045389x12460335.

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Energy harvesting from structural vibrations using an array of multifunctional resonators based on the theory of locally resonant materials is demonstrated. Such locally resonant structures exhibit a stop band for elastic wave propagation. The band gap frequency range depends on the local resonance frequency of the microstructure. One method to realize this is through the use of an array of embedded resonators where the external work done is stored as kinetic energy of the internal mass when the forcing frequency is close to the local resonance frequency. This mechanism can be used to harvest energy by converting the kinetic energy into electrical energy, thus bestowing a multifunctional utility to the structure. We use a spring-loaded magnet enclosed in a capped poly(methyl methacrylate) tube equipped with copper coils to create a unit cell that acts both as a resonator and as a linear generator. Experiments on a serial array of seven unit cells exhibit a band gap between 146.5 (local resonance frequency) and 171 Hz with a peak voltage generation of 3.03 V at steady state. The continuous effective power generated by a single unit cell across a 1-Ω load resistor is 36 mW, indicating the feasibility of constructing vibration isolation structures that can power simple electronic and microelectromechanical systems devices. The applicability of using the device as a transducer to measure the local resonance frequency and the global resonance frequency of the structure is also discussed.
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Liu, Ya-Feng, Pei Huang, Yuan-Qing Li, Qun Liu, Jiang-Ke Tao, De-Jian Xiong, Ning Hu, Cheng Yan, Hao Wang et Shao-Yun Fu. « A biomimetic multifunctional electronic hair sensor ». Journal of Materials Chemistry A 7, no 4 (2019) : 1889–96. http://dx.doi.org/10.1039/c8ta10750e.

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Yang, Dong, Hao Wang, Shenglin Luo, Changning Wang, Sheng Zhang et Shiqi Guo. « Paper-Cut Flexible Multifunctional Electronics Using MoS2 Nanosheet ». Nanomaterials 9, no 7 (26 juin 2019) : 922. http://dx.doi.org/10.3390/nano9070922.

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Art and science represent human creativity and rational thinking, respectively. When the two seemingly opposite fields are intertwined, there is always a life-changing spark. In particular, the integration of ancient traditional Chinese art into the latest electronic devices is always been an unexcavated topic. Fabricating two-dimensional material with a tensile strain less than 3% with an ultimate global stretch has been an important problem that plagues the current flexible electronics field. The current research is limited to material in small scale, and it is always necessary to develop and extend large-sized flexible electronic systems. Here, inspired by the traditional Chinese paper-cut structure, we present a highly deformable multifunctional electronic system based on the MoS2 nanosheet. In this work, we first demonstrate how the traditional paper-cut structure can open the view of flexible electronics. In order to obtain a large area of MoS2 with excellent performance, we use a metal-assisted exfoliation method to transfer MoS2, followed by fabricating a field effect transistor to characterize its excellent electrical properties. Two photodetectors and a temperature sensor are produced with good performance. The mechanical simulation proves that the structure has more advantages in stretchability than other typical paper-cut structures. From the experimental and mechanical point of view, it is proved that the device can work stably under high deformation. We finally show that the device has broad application prospects in highly deformed organs, tissues, and joints. These findings set a good example of traditional Chinese culture to guide innovation in the field of electronic devices.
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Dryuchko, O. G., D. O. Storozhenko, N. V. Bunjakìna, I. O. Ivanytska, V. O. Khanyukov et К. O. Kytayhora. « PREPARATION OF MULTIFUNCTIONAL LAYERED OXIDE REE-CONTAINING MATERIALS ». ACADEMIC JOURNAL Series : Industrial Machine Building, Civil Engineering 2, no 49 (17 octobre 2017) : 301–8. http://dx.doi.org/10.26906/znp.2017.49.858.

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The aim of this work was to study the processes of cooperative interactions among the structural components during the formation of the layered cation-structured perovskite-like oxide phases of rare earth and transition elements at the preparatory stages using the nitrates of elements with different electronic structure and thermal activation. Stages of such transformations and patterns of phase formation were established; factors of influence and their determinant ability were clarified; a number of physical and chemical properties of the formed intermediate phases (coordination of lanthanides nitrates) were studied.
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Terzieva, Liliya. « Multifunctional Leisure Organizations – The Future or a hype ». Atna Journal of Tourism Studies 16, no 2 (1 juillet 2021) : 113–40. http://dx.doi.org/10.12727/ajts.26.6.

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Leisure has been undergoing a transformation that requires strategic design approaches open for imagination, inspiration and diverse organisational structure and behavioural models. The stakeholders within and the participants (not anymore defined just through the notion of consumers) have opened up the spectrum of what leisure could mean and sustain.This paper provides a detailed overview of the existence, essence and specifics of multifunctional leisure organizations, their principles and structures while relating them to two real-life cases from the Netherlands. Challenges, as well as future development scenarios, are presented and discussed.
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Brzeska, Joanna. « Biodegradable Polyurethanes Cross-Linked by Multifunctional Compounds ». Current Organic Synthesis 14, no 6 (28 septembre 2017) : 778–84. http://dx.doi.org/10.2174/1570179414666161115155149.

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Background: Cross-linking structure of polyurethanes determines no degradability of these materials. However, introducing the hydrolysable substrates (of natural or synthetic origin) into the cross-linked polyurethanes structure makes them biodegradable. Moreover compounds (such as polycaprolactone triol, glycerin, lysine triisocyanate, etc.) that are used for polyurethane cross-linking are degraded in non-toxic products. All these kinds of compounds can be introduced into soft or hard segments via urethane bonds. Objective: The review focuses on kind of multifunctional polyols and isocyanates, and low molecular crosslinkers used for cross-linked polyurethanes obtaining. These compounds are natural substrates (in the native state or after modification) or are synthetic compounds with degradable linkages. They belong to polyesters, plant oils, proteins, saccharides, and others (e.g. lignocellulosic materials), and they are synthesized chemically or via biosynthesis by algae, plants, microorganisms, and by animals. Conclusion: Incorporation of degradable groups (such as ester moieties) into the polymer structure, and using of substrates with the structure known and metabolized by microorganisms for soft or hard segments building, facilitate degradation of cross-linked polyurethanes.
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Feng, Jingcheng, Youquan Liu, Yanling Cheng, Feidi Fan, Jun Shen, Zheshuai Lin, Heng Tu et Guochun Zhang. « Growth, Structure, and Properties of a Multifunctional Crystal Pr2CaB10O19 ». Inorganic Chemistry 60, no 15 (20 juillet 2021) : 10895–98. http://dx.doi.org/10.1021/acs.inorgchem.1c01885.

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Zhu, G., F. Sun, Q. Fang et S. Qiu. « The synthesis and structure of multifunctional metal-organic frameworks ». Acta Crystallographica Section A Foundations of Crystallography 64, a1 (23 août 2008) : C125. http://dx.doi.org/10.1107/s0108767308095962.

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