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Efficiency of the motion amplification device with viscous dampers and its application in high-rise buildings

Earthquake Engineering and Engineering Vibration 2009年第4期8卷 521-536页

作者： henry c.huang WSP Asia Ltd.

After nearly a decade of application and investigation, a motion amplification device with viscous dampers for energy dissipation has been recognized as an effective solution to mitigate wind or seismic excitation, especially for stiff structural systems. As a result of compensation of amplified motion, it has been proved that the efficiency of viscous damper largely depends on the motion amplification device configuration, particularly for device stiflhess. In this paper, a ＂scissor-jack＂ type of motion amplification device, called a ＂toggle brace damper＂ system, is studied. It is demonstrated that the efficiency of such a device reflected by its amplification factor is not merely a function of its geometric configuration, but is highly dependent on the support elements＇ stiffness as well, similar to the mechanism of a leverage arm. Accordingly, a mathematical model in terms of complex modulus of the viscous damper with consideration of the support brace＇s stiffness is established. The results indicate that the efficiency of the motion amplification device with viscous dampers significantly depends on the stiffness of the support elements. Other parameters, such as toggle brace configuration and damping values of the viscous damper, are studied and compared. As an application example, numerical analyses are conducted to study the dynamic performance of a 39-story office tower installed with toggle brace dampers constructed on soft soil in a reclaimed area, under a combined effect of the vortex shedding of an adjacent existing 52-story building and earthquakes. The results show that viscous dampers with a motion amplification system using a properly designed toggle brace device proved to be an effective solution to alleviate the external excitations.

关键词： motion amplification device vibration mitigation viscous damper energy dissipation toggle brace damper

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Materials-oriented integrated design and construction of structures in civil engineering—A review

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Frontiers of Structural and civil Engineering 2022年第1期16卷 24-44页

作者： Xing MING John c.huang Zongjin LI Institute of Applied Physics and Materials Engineering University of MacaoMacao SAR 999078China cHc Engineering LLCFairfaxVA 20030USA

Design is a goal-oriented planning activity for creating products,processes,and systems with desired functions through *** is a decision-making exploration:the design outcome may vary greatly depending on the designer’s knowledge and *** design is one type of design philosophy that takes an interdisciplinary and holistic *** civil engineering,structural design is such an activity for creating buildings and ***,structural design in many countries has emphasized a performance-based philosophy that simultaneously considers a structure’s safety,durability,serviceability,and ***,integrated design in civil engineering has become more popular,useful,and ***-oriented integrated design and construction of structures(MIDcS)combine materials engineering and structural engineering in the design stage:it fully utilizes the strengths of materials by selecting the most suitable structural forms and construction *** paper will explore real-world examples of MIDcS,including the realization of MIDcS in timber seismic-resistant structures,masonry arch structures,long-span steel bridges,prefabricated/on-site extruded light-weight steel structures,fiber-reinforced cementitious composites structures,and fiber-reinforced polymer bridge ***,advanced material design methods such as bioinspired design and structure construction technology of additive manufacturing are briefly reviewed and discussed to demonstrate how MIDcS can combine materials and structures.A unified strengthdurability design theory is also introduced,which is a human-centric,interdisciplinary,and holistic approach to the description and development of any civil infrastructure and includes all processes directly involved in the life cycle of the ***,this paper lays out future research directions for further development in the field.

关键词： integrated design and construction fiber-reinforced concrete fiber-reinforced polymer light-weight steel structures digital fabrication composites

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Making small molecules in plants:A chassis for synthetic biology-based production of plant natural products

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Journal of Integrative Plant Biology 2023年第2期65卷 417-443页

作者： Xinyu Liu Peijun Zhang Qiao Zhao Ancheng c.huang Key Laboratory of Molecular Design for Plant cell Factory of Guangdong Higher Education Institutes Department of BiologySchool of Life SciencesSUSTech-PKU Institute of Plant and Food ScienceSouthern University of Science and TechnologyShenzhen 518055China Shenzhen Institutes of Advanced Technology(SIAT) the Chinese Academy of SciencesShenzhen 518055China

Plant natural products have been extensively exploited in food,medicine,flavor,cosmetic,renewable fuel,and other industrial *** biology has recently emerged as a promising means for the cost-effective and sustainable production of natural *** with engineering microbes for the production of plant natural products,the potential of plants as chassis for producing these compounds is underestimated,largely due to challenges encountered in engineering *** in plant engineering is instrumental for enabling the effective and efficient production of valuable phytochemicals in plants,and also paves the way for a more sustainable future *** this manuscript,we briefly recap the biosynthesis of plant natural products,focusing primarily on industrially important terpenoids,alkaloids,and *** further summarize the plant hosts and strategies that have been used to engineer the production of natural *** challenges and opportunities of using plant synthetic biology to achieve rapid and scalable production of high-value plant natural products are also discussed.

关键词： biosynthesis natural products plant engineering synthetic biology

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Efficient white-light-emitting lead-free halide double perovskites enabling full-spectrum pc-WLEDs

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Science china Materials 2025年第01期 305-306页

作者： Xiaoyong huang college of Physics and Optoelectronics Taiyuan University of Technology

With the rapid development of solid-state lighting, an important goal of phosphor-converted white light-emitting diodes (pc-WLEDs) is to provide a healthy and comfortable fullspectrum artificial light source with a co...

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Using SPOT 5 fusion-ready imagery to detect chinese tamarisk(saltcedar)with mathematical morphological method

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International Journal of Digital Earth 2014年第3期7卷 217-228页

作者： Q.S.Liu G.H.Liu c.huang c.J.Xie State Key Laboratory of Resources and Environmental Information System Institute of Geographic Science and Natural Resources ResearchChinese Academy of SciencesBeijingChina

chinese tamarisk(saltcedar)is a deciduous shrub that occurs widely across the Yellow River Delta in *** spatial structure of chinese tamarisk is believed to have an influence on the landscape and habitats of rare *** this study,first,chinese tamarisk is detected using canny edge detector and mathematical morphological operators based on SPOT 5 fusion-ready *** the numbers,areas,locations,and patch spacing of chinese tamarisk patches are *** experiments show that the detection accuracy of chinese tamarisk patches is about 93.4%after the disconnection of connected *** distribution orientation of about 70%of the patches is approximately *** 91%of the minimum distances among the patches are between 12.5 and 57.5 *** rose graph indicates that the main azimuth between patches is north--northwest,and the second is northeast and *** present study indicates that the integrating canny edge detector with the algorithms for extracting circular and elliptical objects based on mathematical morphology is simple and effective for detecting chinese tamarisk patches and is easy to identify the spatial structure of chinese tamarisk patches,which reduces the time and labor for the visual interpretation of chinese tamarisk patches.

关键词： SPOT 5 chinese tamarisk spatial structure mathematical morphology patch

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Quickly obtaining densely dispersed coherent particles in steel matrix and its related mechanical property

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 111-118页

作者： Xiaoxiao Wang Qingsong huang School of chemical Engineering Sichuan UniversityChengdu 610065China

Densely distributed coherent nanoparticles(DcN)in steel matrix can enhance the work-hardening ability and ductility of steel *** the routes to this end can be generally classified into the liquid-solid route and the solid-solid ***,the formation of DcN structures in steel requires long processes and complex *** far,obtaining steel with coherent particle enhancement in a short time remains a bottleneck,and some necessary steps remain ***,we show a high-efficiency liquid-phase refining process reinforced by a dynamic magnetic ***-Y-Mn-O particles had an average size of around(3.53±1.21)nm and can be obtained in just around 180 *** small nanoparticles were coherent with the matrix,implying no accumulated dislocations between the particles and the steel *** findings have a potential application for improving material machining capacity,creep resistance,and radiation resistance.

关键词： ferritic steels coherent particles microstructure compression test work hardening

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DEAM: Decoupled, Expressive, Area-Efficient Metadata cache

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Journal of computer Science & Technology 2014年第4期29卷 679-691页

作者：刘鹏方磊黄巍 ccF IEEE Department of Information Science and Electronic Engineering Zhejiang University State Key Laboratory of Mathematical Engineering and Advanced computing AcM Department of Electrical and computer Engineering University of Rochester NY 14627-0231 U.S.A.

chip multiprocessor presents brand new opportunities for holistic on-chip data and coherence management solutions. An intelligent protocol should be adaptive to the fine-grain accessing behavior. And in terms of storage of metadata, the size of conventional directory grows as the square of the number of processors, making it very expensive in large-scale systems. In this paper, we propose a metadata cache framework to achieve three goals： 1） reducing the latency of data access and coherence activities, 2） saving the storage of metadata, and 3） providing support for other optimization techniques. The metm：lata is implemented with compact structures and tracks the dynamically changing access pattern. The pattern information is used to guide the delegation and replication of decoupled data and metadata to allow fast access. We also use our metadata cache as a building block to enhance stream prefetching. Using detailed execution-driven simulation, we demonstrate that our protocol achieves an average speedup of 1.12X compared with a shared cache protocol with 1/5 of the storage of metadata.

关键词： cache directory multiprocessor

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The contemporary role of metastasectomy in the management of metastatic Rcc

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Journal of cancer Metastasis and Treatment 2021年第1期7卷 926-937页

作者： Zachary Feuer Jacob I.Taylor William c.huang Department of Urology New York University Langone Health New York 10016 NY United States

Metastasectomy was initially described in the 1970s as a therapeutic strategy for patients with metastatic renal cell *** that time,systemic therapy options have grown exponentially,most recently with the introduction of *** aimed to review the contemporary literature regarding the role of metastasectomy in the era of targeted therapy and ***,metastasectomy has benefited patients with small volume,single-organ metastases,with favorable outcomes amongst younger,healthier patients with metastases to specific *** interplay between the employment of metastasectomy and systemic therapy has been limited to small,retrospective series with significant patient selection *** recently,investigators have conducted randomized controlled trials exploring the use of targeted therapies in the adjuvant setting after *** randomized data suggested no benefit in using sorafenib in this setting,and a subsequent study demonstrated possible harm in using pazopanib after ***,the role of other novel systemic therapies,including immunotherapy,nor the timing of use,have been meaningfully *** appears to be a valuable therapeutic option in the properly selected patient,requiring a multi-disciplinary management strategy and,pending future trials,a multimodal treatment approach.

关键词： clear-cell metastatic renal cell carcinoma metastasectomy immunotherapy

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THERMODYNAMIc PARAMETERS IN THE NUcLEATION OF LIQUID IRON

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Acta Metallurgica Sinica(English Letters) 2003年第6期16卷 519-523页

作者： c.huang B.Song J.H.Mao Q.Lin P.Zhao UniversityofScienceandTechnologyBeijing Beijing100083China centralIronandSteelResearchInstitute Beijing100081China

By using of electrolytic pure iron, the specimens containing different oxide content were made in a Mo wire furnace. The DTA method was employed to measure the undercooling of liquid iron during solidification. The relations between the cleanness of liquid iron and undercooling, thermodynamic driving force of nucleation, the nucleus forming energy, as well as the critical radius of nucleus have been investigated. The results showed that with the increase of cleanness of liquid iron the undercooling and thermodynamic driving force increased, while the nucleus forming energy and critical radius of nucleus decreased.

关键词： pure iron cleanness undercooling thermodynamic parameter

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Neuropeptide cholecystokinin:a key neuromodulator for hippocampal functions

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Neural Regeneration Research 2025年第7期20卷 1991-1992页

作者： Fengwen huang Stephen Temitayo Bello Department of Neuroscience City University of Hong KongKowloon TongHong Kong Special Administrative RegionChina center for Regenerative Medicine and Health Hong Kong Institute of Science&InnovationChinese Academy of SciencesHong Kong Special Administrative RegionChina

Spatial memory is crucial for survival within external surroundings and wild *** hippocampus,a critical hub for spatial learning and memory formation,has received extensive investigations on how neuromodulators shape its functions(Teixeira et al.,2018;Zhang et al.,2024).However,the landscape of neuromodulations in the hippocampal system remains poorly understood because most studies focus on classical monoamine neuromodulators,such as acetylcholine,serotonin,dopamine,and *** neuropeptides,comprising the most abundant neuromodulators in the central nervous system,play a pivotal role in neural information processing in the hippocampal ***(ccK),one of the most abundant neuropeptides,has been implicated in regulating various physiological and neurobiological statuses(chen et al.,2019).ccK-A receptor(ccK-AR)and ccK-B receptors(ccK-BR)are two key receptors mediating the biological functions of ccK,both of which belong to class-A sevenfold transmembrane G protein-coupled receptors(Nishimura et al.,2015).ccK-AR preferentially reacts to sulfated ccK,whereas ccK-BR binds both ccK and gastrin with similar affinities(Ding et al.,2022).The expression patterns of ccK-AR and ccK-BR are distinct,implying that ccK has various functions in target *** instance,ccK-AR is widely expressed in the GI and brain subregions and is hence implicated in the control of digestive function and satiety ***,ccK-BR is abundantly and widely distributed in the central nervous system,which majorly regulates anxiety,learning,and memory(Ding et al.,2022).However,the roles of endogenous ccK and ccK receptors in regulating hippocampal function at electrophysiological and behavioral levels have received less attention.

关键词： abundant functions modulator

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