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Mechanically driven assembly of biomimetic 2D-material microtextures with bioinspired multifunctionality

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Nano Research 2024年第2期17卷 663-678页

作者： Yang Li Lin Jing Joshua M.Little Haochen Yang tsai-Chun Chung Po-Yen Chen Department of Chemical and Biomolecular Engineering University of MarylandCollege ParkMD 20740USA Maryland Robotics Center University of MarylandCollege ParkMD 20742USA School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

Nature provides a wealth of bio-inspiration for advanced material *** various nanomaterials into biomimetic microtextures with bioinspired functionalities has spurred increasing research interests and facilitated technological advances in various *** recent years,two-dimensional materials(2DMs)have emerged as important building block units in the biomimicry field due to their distinct chemical,physical,electrical,electrochemical,and catalytic *** this review article,various mechanically driven assembly approaches are summarized to fabricate various genealogies of biomimetic 2DM microtextures with bio-inspired ***,sequential deformation strategies are discussed to programmably construct higher dimensional 2DM microtextures,ranging from wrinkles/crumples(one-time deformation)to multiscale hierarchies(multiple deformations).Next,the current progress using higher dimensional 2DM microtextures to imitate different biological structures and/or induce bio-inspired multifunctionality is systematically *** showcases of bio-inspiration and biomimicry using different 2DM nanosheets are highlighted:(1)wrinkle patterns of an earthworm that spur the design of strain sensors with programmable working ranges and sensitivities,(2)wrinkle appearance of a Shar-pei dog that motivates the fabrication of stretchable energy storage devices,(3)hierarchical scale textures of a desert lizard that inspire cation-induced gelation platforms for 2DM aerogels,and(4)wrinkle skin of an elephant that influences the development of 2DM protective skin for soft ***,challenges and future opportunities of adopting 2DM nanosheets to assemble biomimetic microstructures with synergistic functionalities are discussed.

关键词： two-dimensional(2D)materials mechanically driven assembly biomimetic microtextures functional nanocomposite bio-inspired multifunctionality

The ALMaQUEST Survey ⅩⅤ: The dependence of the molecular-to-atomic gas ratios on resolved optical diagnostics

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Science China(Physics,Mechanics & Astronomy) 2024年第9期Mechanics & Astronomy) .卷 178-200页

作者： Niankun Yu Zheng Zheng Chao-Wei tsai pei Zuo Sara L.Ellison David V.Stark Di Li Jingwen Wu Karen L.Masters Ting Xiao Yinghui Zheng Zongnan Li Kai Zhang Hongying Chen Shu Liu Sihan Jiao Fanyi Meng National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Radio Astronomy and Technology Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University School of Astronomy and Space Science University of Chinese Academy of Sciences Department of Physics & Astronomy University of Victoria Departments of Physics and Astronomy Haverford College Space Telescope Science Institute Zhejiang Laboratory New Cornerstone Science Laboratory School of Physics Zhejiang University

The atomic-to-molecular gas conversion is a critical step in the baryon cycle of galaxies,which sets the initial conditions for subsequent star formation and influences the multi-phase interstellar *** compiled a sample of 94 nearby galaxies with observations of multi-phase gas contents by utilizing public HⅠ,CO,and optical IFU data from the Ma NGA survey together with new FAST HⅠ*** agreement with previous results,our sample shows that the global molecular-to-atomic gas ratio(Rmol≡log MH2/MHⅠ) is correlated with the global stellar mass surface density μ*with a Kendall's τ coefficient of 0.25 and p<10-3,less tightly but still correlated with stellar mass and NUV-r color,and not related to the specific star formation rate（sSFR）.The cold gas distribution and kinematics inferred from the HⅠand CO global profile asymmetry and shape do not significantly rely on *** to the availability of kpc-scale observations of MaNGA,we decompose galaxies into HⅡ,composite,and AGN-dominated regions by using the BPT *** increasing Rmol,the fraction of HⅡregions within 1.5 effective radius decreases slightly;the density distribution in the spatially resolved BPT diagram also changes significantly,suggesting changes in metallicity and ionization *** with high Rmoltend to have high oxygen abundance,both at one effective radius with a Kendall's τ coefficient of 0.37(p<10-3) and their central *** all parameters investigated here,the oxygen abundance at one effective radius has the strongest relation with global *** dependence of gas conversion on gas distribution and galaxy ionization states is *** contrast,the observed positive relation between oxygen abundance（μ*） and Rmolindicates that the gas conversion is efficient in regions of high metallicity（density）.

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The ALMaQUEST Survey XV: The dependence of the molecular-to-atomic gas ratios on resolved optical diagnostics

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Science China(Physics,Mechanics & Astronomy) 2024年

作者： Niankun Yu Zheng Zheng Chao-Wei tsai pei Zuo Sara L.Ellison David V.Stark Di Li Jingwen Wu Karen L.Masters Ting Xiao Yinghui Zheng Zongnan Li Kai Zhang Hongying Chen Shu Liu Sihan Jiao Fanyi Meng School of Physics Zhejiang University National Astronomical Observatories Chinese Academy of Sciences Key Laboratory of Radio Astronomy and Technology Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University School of Astronomy and Space Science University of Chinese Academy of Sciences Department of Physics & Astronomy University of Victoria Departments of Physics and Astronomy Haverford College Space Telescope Science Institute Zhejiang Laboratory New Cornerstone Science Laboratory

The atomic-to-molecular gas conversion is a critical step in the baryon cycle of galaxies,which sets the initial conditions for subsequent star formation and influences the multi-phase interstellar *** compiled a sample of 94 nearby galaxies with observations of multi-phase gas contents by utilizing public H i,CO,and optical IFU data from the Ma NGA survey together with new FAST H i *** agreement with previous results,our sample shows that the global molecular-to-atomic gas ratio Rmol=log MH2/MH1is correlated with the global stellar mass surface density μ*with a Kendall’sτcoefficient of 0.25and p<10-3,less tightly but still correlated with stellar mass and NUV-r color,and not related to the specific star formation rate （sSFR）.The cold gas distribution and kinematics inferred from the H i and CO global profile asymmetry and shape do not significantly rely on *** to the availability of kpc-scale observations of Ma NGA,we decompose galaxies into H ii,composite,and AGN-dominated regions by using the BPT *** increasing Rmol,the fraction of H ii regions within1.5 effective radius decreases slightly;the density distribution in the spatially resolved BPT diagram also changes significantly,suggesting changes in metallicity and ionization *** with high Rmoltend to have high oxygen abundance,both at one effective radius with a Kendall’sτcoefficient of 0.37 (p<10-3) and their central *** all parameters investigated here,the oxygen abundance at one effective radius has the strongest relation with global *** dependence of gas conversion on gas distribution and galaxy ionization states is *** contrast,the observed positive relation between oxygen abundance（μ*） and Rmolindicates that the gas conversion is efficient in regions of high metallicity （density）.

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Isolation of Acidic Mucilage from the Outer Seed Coat of Shaddock (Citrus grandis Osbeck) and Evaluation of Its Functional Properties

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American Journal of Plant Sciences 2016年第6期7卷 780-788页

作者： Heng-Long Wang Wei-Yu Chen pei-jung tsai Chen-Yi Lin Yuan-Ting Hsu Li-Feng Chen Wei-Zhi Wu Wan-Chi Wang Wen-Jen Yang Chao-Lin Chang Wei-Tung Liao Department of Life Sciences National University of Kaohsiung Taiwan Institute of Biotechnology National University of Kaohsiung Taiwan Food Industry Research and Development Institute Taiwan Department of Chemical and Materials Engineering Southern Taiwan University of Science and Technology Taiwan

After water imbibition, the outer layer seed coat of shaddock (Citrus grandis Osbeck) produces transparent gel-like mucilage (MSS), but its characteristics have never been studied before. This study aimed to assess the physico-chemical and functional properties of MSS. Extractions of MSS with deionized water at room temperature yielded about 3.5% based on the dry weight of seed. The major components were neutral sugars and uronic acids in the amounts of 33.5% and 49.6%, respectively. The acidic nature of MSS was confirmed by ruthenium red staining. Its water holding capacity and viscosity were 44.53 g•g-1 DW and 1660 cP at 10 g/L, respectively. MSS showed a weak quenching activity against DPPH radical, and moderate ferrous ion-chelating and superoxide anion radical scavenging activities, with IC50 value of 1.5 g/L and 1.1 g/L, respectively. A methyl thiazolyl tetrazolium (MTT) assay demonstrated that MSS significantly stimulated the viability of mouse skin fibroblasts (NIH/3T3) at 5 - 300 mg/L. These results impart the potential usefulness of the MSS to food, cosmetics and other applications.

关键词： Antioxidation Cell Viability Shaddock Seed Viscosity Water Holding Capacity

星暴矮星系NGC 5253周围的中性氢气体分布

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中国科学院大学学报（中英文） 2024年第2期41卷 188-194页

作者：沃佳怡蔡肇伟左沛陈天禄西藏大学宇宙线教育部重点实验室拉萨850000 西藏大学理学院物理系拉萨850000 中国科学院国家天文台北京100101 中国科学院大学天文与空间科学学院北京101408 中国科学院FAST重点实验室北京100101 北京大学科维理天文与天体物理研究所北京100871

中性氢(HI)气体是恒星形成的基本物质,驱动着星系的演化。对于星暴矮星系NGC 5253,过去的研究利用射电干涉阵观测到的HI气体呈不对称分布,向东北方向延伸约7 kpc。这一延展结构可能表明NGC 5253与其附近的旋涡星系M 83之间存在动力学联... 详细信息

中性氢(HI)气体是恒星形成的基本物质,驱动着星系的演化。对于星暴矮星系NGC 5253,过去的研究利用射电干涉阵观测到的HI气体呈不对称分布,向东北方向延伸约7 kpc。这一延展结构可能表明NGC 5253与其附近的旋涡星系M 83之间存在动力学联系。为研究这两个星系之间可能存在的HI气体连接,从绿岸望远镜获得了射电L波段对NGC 5253周围的HI成图数据,探测到NGC 5253和M 83之间可能存在的7个HI气体云团。这些HI气体云团候选体主要分布在东北方向,由NGC 5253延展至距离超过60 kpc外。这些气体云团可能在触发矮星系NGC 5253剧烈的恒星形成活动中发挥重要作用。

关键词：星系相互作用恒星形成中性氢气体 NGC 5253

Improving Speech Enhancement Framework via Deep Learning

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Computers, Materials & Continua 2023年第5期75卷 3817-3832页

作者： Sung-jung Hsiao Wen-tsai Sung Department of Information Technology Takming University of Science and TechnologyTaipei City11451Taiwan Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung411030Taiwan

Speech plays an extremely important role in social *** individuals suffer from a“speech barrier,”which limits their communication with *** this study,an improved speech recognitionmethod is proposed that addresses the needs of speech-impaired and deaf individuals.A basic improved connectionist temporal classification convolutional neural network(CTC-CNN)architecture acoustic model was constructed by combining a speech database with a deep neural *** sensors were used to convert the collected voice signals into text or corresponding voice signals to improve *** method can be extended to modern artificial intelligence techniques,with multiple applications such as meeting minutes,medical reports,and verbatim records for cars,sales,*** experiments,a modified CTC-CNN was used to train an acoustic model,which showed better performance than the earlier common *** a CTC-CNN baseline acoustic model was constructed and optimized,which reduced the error rate to about 18%and improved the accuracy rate.

关键词： Artificial intelligence speech recognition speech to text CTC-CNN

RFID Positioning and Physiological Signals for Remote Medical Care

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Computer Systems Science & Engineering 2022年第4期41卷 289-304页

作者： Wen-tsai Sung Sung-jung Hsiao Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung411030Taiwan Department of Information Technology Takming University of Science and TechnologyTaipei City11451Taiwan

The safety of patients and the quality of medical care provided to them are vital for their *** study establishes a set of RFID(Radio Fre-quency Identiﬁcation)-based systems of patient care based on physiological sig-nals in the pursuit of a remote medical care *** RFID-based positioning system allows medical staff to continuously observe the patient's health and *** staff can thus respond to medical emergencies in time and appropriately care for the *** the COVID-19 pandemic broke out,the proposed system was used to provide timely information on the location and body temperature of patients who had been screened for the *** results of experiments and comparative analyses show that the proposed system is superior to competing systems in *** use of remote monitoring technology makes user interface easier to provide high-quality medical services to remote areas with sparse populations,and enables better care of the elderly and patients with mobility *** can be found from the experiments of this research that the accuracy of the position sensor and the ability of package delivery are the best among the other related *** presentation of the graphical interface is also the most cordial among human-computer interaction and the operation is simple and clear.

关键词： Remote medical care active RFID positioning physiological signal

Home Monitoring of Pets Based on AIoT

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Computer Systems Science & Engineering 2022年第10期43卷 59-75页

作者： Wen-tsai Sung Sung-jung Hsiao Department of Electrical Engineering National Chin-Yi University of TechnologyTaichung City411030Taiwan Department of Information Technology Takming University of Science and TechnologyTaipei City11451Taiwan

With technological and social development in recent decades,people have begun pursuing more comfortable lives that frequently feature household pets that are treated like members of the *** average,one out of every three households has a *** has also led to the creation and growth of many businesses in the pet industry.A few companies have developed a system that allows busy office workers to remotely care for pets at home based on the Internet of Things and an intelligent adjustment *** owners of two dogs,the authors of this study observed their pets’living habits and recorded environmental conditions that appear suitable for *** data were then used to develop an automatic control system to care for *** observational data on the pets’habits and environment were written in a program in Arduino by using the ESP8266 Wi-Fi *** module and booster module control is the switch and setting of various household *** to the loop setting of the program,the system does not need to manually switch or adjust the electrical settings of the ***,the pet's living environment is assessed by using various *** use of Arduino programs helps develop a system that can automatically adjust the environment to one that is most suitable for the pet's comfort.

关键词： Remote medical care active RFID positioning physiological signal

Utilizing the Improved QPSO Algorithm to Build a WSN Monitoring System

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Computers, Materials & Continua 2022年第2期70卷 3529-3548页

This research uses the improved Quantum Particle Swarm Optimization(QPSO)algorithm to build an Internet of Things(IoT)life comfort monitoring system based on wireless sensing *** purpose is to improve the quality of intelligent *** functions of the system include automatic basketball court lighting system,monitoring of infants’sleeping posture and accidental falls of the elderly,human thermal comfort measurement and other related life comfort services,*** the hardware system of the IoT,this research is based on the latest version of ZigBee 3.0,which uses optical sensors,3-axis accelerometers,and temperature/humidity sensors in the IoT perception *** the network transmission layer,the central network architecture is used for *** the application layer,we have designed a graphical interface for real-time values and information that can be read at any time and place using mobile *** this study,authors use the improved QPSO algorithm in the calculation part,so that the target can be effectively positioned outside the numerous surveillance *** study uses various sensor data fusion technologies to make the IoT system becomes able to provide more extensive and even better services than ever *** short,this research work has proven to be an effective way to reduce power consumption,improve medical quality and provide higher comfort for intelligent lift level.

关键词： Quantum particle swarm optimization IoT wireless sensor network ZigBee