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A Broad Range Triboelectric Stiffness Sensor for variable Inclusions Recognition

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Nano-Micro Letters 2023年第12期15卷 298-309页

作者： Ziyi Zhao Zhentan Quan Huaze Tang Qinghao Xu Hongfa Zhao Zihan Wang Ziwu Song Shoujie Li Ishara Dharmasena Changsheng Wu Wenbo Ding Tsinghua‑Berkeley Shenzhen Institute Institute of Data and InformationShenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055People’s Republic of China Institute of Ocean Engineering Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055People’s Republic of China Wolfson School of Mechanical Electrical and Manufacturing Engineering Loughborough UniversityLoughborough LE113TUUK Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore risc-v international open source laboratory 518055 ShenzhenPeople’s Republic of China

With the development of artificial intelligence,stiffness sensors are extensively utilized in various fields,and their integration with robots for automated palpation has gained significant *** study presents a broad range self-powered stiffness sensor based on the triboelectric nanogenerator(Stiff-TENG)for variable inclusions in soft objects *** Stiff-TENG employs a stacked structure comprising an indium tin oxide film,an elastic sponge,a fluorinated ethylene propylene film with a conductive ink electrode,and two acrylic pieces with a shielding *** the decoupling method,the Stiff-TENG achieves stiffness detection of objects within 1.0 *** output performance and characteristics of the TENG for different stiffness objects under 4 mm displacement are *** Stiff-TENG is successfully used to detect the heterogeneous stiffness structures,enabling effective recognition of variable inclusions in soft object,reaching a recognition accuracy of 99.7%.Furthermore,its adaptability makes it well-suited for the detection of pathological conditions within the human body,as pathological tissues often exhibit changes in the stiffness of internal *** research highlights the innovative applications of TENG and thereby showcases its immense potential in healthcare applications such as palpation which assesses pathological conditions based on organ stiffness.

关键词： Stiffness sensor Decoupling method Heterogeneous stiffness variable inclusions Healthcare applications

Functional verification for Agile Processor Development: A Case for Workflow Integration

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Journal of Computer Science & Technology 2023年第4期38卷 737-753页

作者：徐易难余子濠王凯帆王华强蔺嘉炜金越张林隽张紫飞唐丹王卅石侃孙凝晖包云岗 State Key Lab of Processors Institute of Computing TechnologyChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Beijing Institute of open source Chip Beijing 100080China

Agile hardware development methodology has been widely adopted over the past *** the research progress,the industry still doubts its applicability,especially for the functional verification of complicated processor *** verification commonly employs a simulation-based method of co-simulating the design under test with a reference model and checking the consistency of their outcomes given the same input *** observe limited collaboration and information exchange through the design and verification processes,dramatically leading to inefficiencies when applying the conventional functional verification workflow to agile *** this paper,we propose workflow integration with collaborative task delegation and dynamic information exchange as the design principles to effectively address the challenges on functional verification under the agile development *** on workflow integration,we enhance the functional verification workflows with a series of novel methodologies and *** diff-rule based agile verification methodology(DRAv)reduces the overhead of building reference models with runtime execution information from designs under *** present the risc-v implementation for DRAv,DiffTest,which adopts information probes to extract internal design behaviors for co-simulation and *** further integrates two plugins,namely XFUZZ for effective test generation guided by design coverage metrics and LightSSS for efficient fault analysis triggered by co-simulation *** present the integrated workflows for agile hardware development and demonstrate their effectiveness in designing and verifying risc-v processors with 33 functional bugs found in *** also illustrate the efficiency of the proposed toolchains with a case study on a functional bug in the L2 cache of XiangShan.

关键词： functional verification agile development open-source hardware workflow integration

Neutral electrolyte aluminum air battery with open configuration

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Rare Metals 2006年第z1期25卷 360-363页

作者： HAN Bin LIANG Guangchuan Institute of Power source and Ecomaterials Science Hebei University of Technology Tianjin 300130 China Institute of Power Source and Ecomaterials Science Hebei University of Technology Tianjin 300130 China

A kind of new long life aluminum air batteries with open configuration was developed, using aluminum alloy doped with Ga, In, Sn, Bi, Pb and Mn as anode, NaCl solution as electrolyte and air electrode as cathode. The polarization curves of aluminum electrode and air electrode were tested. And the cell′s performance was tested to calculate the utilization of aluminum electrode and the energy density. It is shown that, in the 3.5% NaCl solution, the cell can discharge at 0.29 A for 140 h with the working voltage keeping over 1.1 v. The utilization ratio of aluminum anode is over 44%, and the life of battery is longer than 2400 h.

关键词： aluminum air battery neutral electrolyte open configuration cell performance

In-Silico Analysis &In-vivo Results Concur on Glutathione Depletion in Glyphosate Resistant GMO Soy, Advancing a Systems Biology Framework for Safety Assessment of GMOs

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American Journal of Plant Sciences 2016年第12期7卷 1571-1589页

作者： v. A. Shiva Ayyadurai Michael Hansen John Fagan Prabhakar Deonikar Systems Biology Group International Center for Integrative Systems Cambridge MA USA Consumers Union Yonkers NY USA Earth open source Institute Fairfield IA USA

This study advances previous efforts towards development of computational systems biology, in silico, methods for biosafety assessment of genetically modified organisms (GMOs). C1 metabolism is a critical molecular system in plants, fungi, and bacteria. In our previous research, critical molecular systems of C1 metabolism were identified and modeled using CytoSolve?, a platform for in silico analysis. In addition, multiple exogenous molecular systems affecting C1 metabolism such as oxidative stress, shikimic acid metabolism, glutathione biosynthesis, etc. were identified. Subsequent research expanded the C1 metabolism computational models to integrate oxidative stress, suggesting glutathione (GSH) depletion. Recent integration of data from the EPSPS genetic modification of Soy, also known as Roundup Ready Soy (RRS), with C1 metabolism predicts similar GSH depletion and HCHO accumulation in RRS. The research herein incorporates molecular systems of glutathione biosynthesis and glyphosate catabolism to expand the extant in silico models of C1 metabolism. The in silico results predict that Organic Soy will have a nearly 250% greater ratio of GSH and GSSG, a measure of glutathione levels, than in RRS that are glyphosate-treated glyphosate-resistant Soy versus the Organic Soy. These predictions also concur with in vivo greenhouse results. This concurrence suggests that these in silico models of C1 metabolism may provide a viable and validated platform for biosafety assessment of GMOs, and aid in selecting rational criteria for informing in vitro and in vivo efforts to more accurately decide in the problem formulation phase whose parameters need to be assessed so that conclusion on “substantial equivalence” or material difference of a GMO and its non-GMO counterpart can be drawn on a well-grounded basis.

关键词： Glutathione Genetic Modification C1 Metabolism Biomarker Safety Assessment In-Silico Analysis Glyphosate CytoSolve Systems Biology Safety Assessment

Atomic-scale structural and chemical evolution of Li3v2(PO4)3 cathode cycled at high voltage window

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Nano Research 2019年第7期12卷 1675-1681页

作者： Shulin Chen Jian Zou Yuehui Li Ning Li Mei Wu Jinghuang Lin Jingmin Zhang Jian Cao Jicai Feng Xiaobin Niu Jianming Bai Junlei Qi Peng Gao Liping Wang Hong Li School of Materials and Energy State Key Laboratory of Electronic Thin Film and Integrated DevicesUniversity of Electronic Science and Technology oj ChinaChengdu 610054China State Key laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China Electron Microscopy laboratory School of PhysicsPeking UniversityBeijing 100871China National Synchrotron Light source II Brookhaven National LaboratoryUptonNew York 11973USA Collaborative Innovation Center of Quantum Matter Beijing 100871China international Center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Institute of Physics Chinese Academy of SciencesBeijing 100190China

Here,by using atomically resolved scanning transmission electron microscopy and electron energy loss spectroscopy,we investigate the structural and chemical evolution of Li3v2(PO4)3 (LvP) upon the high-voltage window (3.0-4.8 v).We find that the valence of vanadium gradually increases towards the core corresponding to the formation of electrochemically inactive Li3-xv2(PO4)3 (L3-xvP) *** Li-deficient phases exhibit structure distortion with superstructure stripes,likely caused by the migration of the vanadium,which can slow down the lithium ion diffusion or even block the diffusion *** kinetic limitations lead to the formation of Li-deficient phase along with capacity ***,the LvP continuously losses of electrochemical activity and Li-deficient phases gradually grow from the particle core towards the surface during *** 500 cycles,the thickness of active LvP layer decreases to be - 5-20 ***,the micromorphology and chemical composition of solid electrolyte interphase (SEI) have been investigated,indicating the thick SEI film also contributes to the capacity *** present work reveals the structural and chemical evolution in the cycled electrode materials at an atomic scale,which is essential to understand the voltage fading and capacity decaying of LvP cathode.

关键词： lithium-ion batteries Li-deficient lithium vanadium phosphate capacity fading solid electrolyte interphase scanning transmission electron microscopy electron energy loss spectroscopy

Wild melon: a novel non-edible feedstock for bioenergy

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Petroleum Science 2018年第2期15卷 405-411页

作者： Maria Ameen Muhammad Zafar Mushtaq Ahmad Anjuman Shaheen Ghulam Yaseen Biofuel laboratory Department of Plant Sciences Quaid-i-Azam University Department of Environmental Science Female CampusInternational Islamic University Islamabad

In the present research work, a non-edible oil source Cucumis melo var. agrestis （wild melon） was systematically identified and studied for biodiesel production and its characterization. The extracted oil was 29.1% of total dry seed weight. The free fatty acid value of the oil was found to be 0.64%, and the single-step alkaline transesterification method was used for conversion of fatty acids into their respective methyl esters. The maximum conversion efficiency of fatty acids was obtained at 0.4 wt% NaOH （used as catalyst）, 30% （methanol to oil, v/v） methanol amount, 60 ℃ reaction temperature, 600-rpm agitation rate and 60-min reaction time. Under these optimal conditions, the conversion efficiency of fatty acid was 92%. However, in the case of KOH as catalyst, the highest conversion （85%） of fatty acids was obtained at 40% methanol to oil ratio, 1.28 wt% KOH, 60 ℃ reaction temperature, 600-rpm agitation rate and 45 min of reaction time. Qualitatively, biodiesel was characterized through Fourier transform infrared spectroscopy （FFIR） and gas chromatography and mass spectroscopy （GC-MS）. FTIR results demonstrated a strong peak at 1742 cm-1, showing carbonyl groups （C=O） of methyl esters. However, GC-MS results showed the presence of twelve methyl esters comprised of lauric acid, myristic acid, palmitic acid, non-decanoic acid, hexadecanoic acid, octadecadienoic acid and octadecynoic acid. The fuel properties were found to fall within the range recommended by the international biodiesel standard, i.e., American Society of Testing Materials （ASTM）： flash point of 91℃, density of 0.873 kg/L, viscosity of 5.35 cSt, pour point of - 13 ℃, cloud point of -10 ℃, total acid number of 0.242 mg KOH/g and sulfur content of 0.0043 wt%. The present work concluded the potential of wild melon seed oil as excellent non-edible source of bioenergy.

关键词： Cucumis melo var. agrestis Wild melon seed oil (WMSO) Transesterification Bioenergy Characterization Fuel properties

Carbon decorated Li_(3)v_(2)(PO_(4))_(3) for high-rate lithium-ion batteries:Electrochemical performance and charge compensation mechanism

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Journal of Energy Chemistry 2021年第2期30卷 124-131,I0005页

作者： Manling Ding Chen Cheng Qiulong Wei Yue Hu Yingying Yan Kehua Dai Jing Mao Jinghua Guo Liang Zhang Liqiang Maig Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&1 DevicesSoochow UniversitySuzhou 215123JiangsuChina Department of Materials Science and Engineering Fujian Key Laboratory of Materials GenomeCollege of MaterialsXiamen UniversityXiamen 361005FujianChina College of Chemistry Tianjin Normal UniversityTianjin 300387China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina Advanced Light source Lawrence Berkeley National LaboratoryBerkeleyCA 94720United States Department of Chemistry and Biochemistry University of CaliforniaSanta CruzCA 95064United States State Key laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of Technology.Wuhan 430070HubeiChina

Fast charging and high-power delivering batteries are highly demanded in mobile electronics,electric vehicles and grid energy storage,but there are full of *** star-material Li_(3)v_(2)(PO_(4))_(3) is demonstrated as a promising high-rate cathode material meeting the above ***,we report the carbon decorated Li_(3)v_(2)(PO_(4))_(3) (LvP/C) cathode prepared via a facile method,which displays a remarkable high-rate capability and long-term cycling ***,the prepared LvP/C delivers a high discharge capacity of 122 mAh g^(-1)(-93% of the theoretical capacity) at a high rate up to 20 C and a superior capacity retention of 87.1% after 1000 ***,by applying a combination of X-ray absorption spectroscopy and full-range mapping of resonant inelastic X-ray scattering,we clearly elucidate the structural and chemical evolutions of LvP upon various potentials and cycle *** show unambiguous spectroscopic evidences that the evolution of the hybridization strength between v and O in LvP/C as a consequence of lithiation/delithiation is highly reversible both in the bulk and on the surface during the discharge-charge processes even over extended cycles,which should be responsible for the remarkable electrochemical performance of LvP/*** present study provides not only an effective synthesis strategy but also deeper insights into the surface and bulk electrochemical reaction mechanism of LvP,which should be beneficial for the further design of high-performance LvP electrode materials.

关键词： Lithium-ion batteries Li_(3)v_(2)(PO_(4))_(3) Charge compensation mechanism X-ray absorption spectroscopy Resonant inelastic X-ray scattering

Minerals in edible insects:a review of content and potential for sustainable sourcing

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Food Science and Human Wellness 2024年第1期13卷 65-74页

作者： Mingxing Lu Chenxu Zhu Sergiy Smetana Ming Zhao Haibo Zhang Fang Zhang Yuzhou Du College of Plant Protection&Institute of Applied Entomology Yangzhou UniversityYangzhou 225009China German Institute of Food Technologies(DIL e.v.) Quakenbrück D-49610Germany Jiangsu Plant Protection and Plant Quarantine Station Nanjing 210036China Joint international Research laboratory of Agriculture and Agri-Product Safety Yangzhou UniversityYangzhou 225009China

In response to the rapid increase in world population and subsequent demands for food,edible insects represent an alternative food source for humans that is rich in proteins,amino acids and *** is a tradition in many countries including China and Thailand,and edible insects have attracted a lot of attention in Western World due to their suitable nutrient composition,high mineral content(e.g.,Fe,Zn,Ca,Mg)and potential use as a supplement in human *** this study,we surveyed mineral content in seven insect orders and 67 species of mass produced and wild-harvested edible *** total content of essential elements in edible insects was very high in Tenebrio molitor,Bombyx mori,and Zonocerus *** heavy metal content(summarized for eight species)was below the maximum limit allowed for safe *** supply of minerals derived from insect biomass is complicated due to the high variations of mineral content in insects and the potential of its change due to processing.

关键词： Edible insects Minerals Nutrition Food safety Sustainability

Enhancement of terahertz coupling efficiency by improved antenna design in GaN/AlGaN high electron mobility transistor detectors

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Chinese Physics B 2012年第10期21卷 516-521页

作者：孙云飞孙建东张晓渝秦华张宝顺吴东岷 international laboratory for Adaptive Bio-Nanotechnology(i-Lab) Suzhou Institute of Nano-Technology and Nano-BionicsChinese Academy of Sciences Key laboratory of Nanodevices Suzhou Institute of Nano-Technology and Nano-BionicsChinese Academy of Sciences Graduate University of Chinese Academy of Sciences College of Electronic&Information Engineering Suzhou University of Science and Technology

An optimized micro-gated terahertz detector with novel triple resonant antenna is *** novel resonant antenna operates at room temperature and shows more than a 700% increase in photocurrent response compared to the conventional bowtie *** finite-difference-time-domain simulations,we found the performance of the self-mixing GaN/AlGaN high electron mobility transistor detector is mainly dependent on the parameters L gs（the gap between the gate and the source/drain antenna） and L w（the gap between the source and drain antenna）.With the improved triple resonant antenna,an optimized micrometer-sized AlGaN/GaN high electron mobility transistor detector can achieve a high responsivity of 9.45×102 v/W at a frequency of 903 GHz at room temperature.

关键词： terahertz detector triple resonant antenna two-dimensional electron gas high electron mobility transistor