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Exploration on 2D DOA Estimation of Linear Array Motion:Uniform Linear Motion

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China Communications 2023年第11期20卷 78-95页

作者： Jianhong chu Zhi Zhang yu Guo School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China

Generally,due to the limitation of the dimension of the array aperture,linear arrays cannot achieve two-dimensional(2D)direction of arrival(DOA)*** the emergence of array motion provides a chance for *** this paper,a generalized motion scheme and a novel method of 2D DOA estimation are proposed by exploring the linear array *** be specific,the linear arrays are controlled to move along an arbitrary direction at a constant velocity and snap per fixed time *** the received signals are processed to synthesize the comprehensive observation vector for an extended 2D virtual ***,since most of 2D DOA estimation methods are not universal to our proposed motion scheme and the reduced-dimensional(RD)method fails to handle the case of the coupled parameters,a decoupled reduced-complexity multiple signals classification(DRC MUSIC)algorithm is designed *** results demonstrate that:a)our proposed scheme can achieve underdetermined 2D DOA estimation just by the linear arrays;b)our designed DRC MUSIC algorithm has the good properties of high accuracy and low complexity;c)our proposed motion scheme with the DRC method has better universality in the motion direction.

关键词： 2D DOA estimation linear array motion reduced complexity synthetic aperture

Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li Xin-Ran Song Qian-Qian Wan yu-ming Wang Han-Zhou Li Wei-Quan Xu Jia-Bao Liao Wei-Bo Wen Jing Miao Huan-Tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

Periodic Solutions with Prescribed Minimal Period for the Second Order Hamiltonian Systems with Even Potentials

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Acta Mathematica Sinica,English Series 2010年第5期26卷 825-830页

作者： yu ming XIAO Chern Institute of Mathematics Nankai University Tianjin 300371 P. R. China

In this paper, under a similar but stronger condition than that of Ambrosetti and Rabinowitz we find a T-periodic solution of the autonomous superquadratic second order Hamiltonian system with even potential for any T... 详细信息

关键词： critical points Hamiltonian systems periodic solutions minimal period

Progress and prospect for high temperature single-phased magnetic ferroelectrics

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Chinese Science Bulletin 2008年第14期53卷 2097-2112页

作者： yu Jian chu JunHao Functional Materials Research Laboratory Tongji University Shanghai 200092 China National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China

Magnetic ferroelectrics are one of the most important functional materials. The present bottleneck lim- iting applications of them is lacking of high-temperature single-phased ferromagnetic-ferroelectric multiferroics with strong magnetoelectric coupling effect. Here, those progresses of the mechanism for coexistence of ferroelectric and magnetic order, experimental and theoretical studies on single-phased magnetic ferroelectrics, and the relationship between magnetic structure and crystal symmetry are summarized. With examples of BiFeO3, BiMnO3 and Bi2FeCrO6, the difficulties encountered in this field are analyzed. At last, some prospects to develop high-temperature single-phased ferromagnetic-ferro- electric multiferroics are also presented.

关键词：磁电效应单相位复合物磁铁电质高温条件 BiFeO3 BiMnO3 Bi2CrFeO6

Synthesis of the superfine high-entropy zirconate nanopowders by polymerized complex method

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Journal of Advanced Ceramics 2022年第1期11卷 136-144页

作者： Yangjie HAN Renwang yu Honghua LIU Yanhui chu School of Materials Science and Engineering South China University of TechnologyGuangzhou 510641China

The high-purity and superfine high-entropy zirconate nanopowders,namely(Y_(0.25)La_(0.25)Sm_(0.25)Eu_(0.25))_(2)Zr_(2)O_(7)nanopowders,without agglomeration,were successfully synthesized via polymerized complex method at low temperatures for the first *** results showed that the crystallinity degree,lattice strain,and particle size of the as-synthesized powders were gradually enhanced with the increase of the synthesis temperature from 800 to 1300℃.The as-synthesized powders involved fluorite phase in the range of 800-1200℃while they underwent the phase evolution from fluorite to pyrochlore at 1300℃.It is worth mentioning that the as-synthesized powders at 900℃are of the highest quality among all the as-synthesized powders,which is due to the fact that they not only possess the particle size of 11 nm without agglomeration,but also show high purity and good compositional uniformity.

关键词： high-entropy oxides zirconates nanopowders polymerized complex method

Rapid CO_(2)-laser scribing fabrication of an electrochemical sensor for the direct detection of Pb^(2+) and Cd^(2+)

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Nano Research 2023年第5期16卷 7671-7681页

作者： Guanglei chu Yanyan Zhang Zhongrui Zhou Weixuan Zeng Dongfei Chen Siping yu Jiemin Wang Yemin Guo Xia Sun ming Li Hunan Agricultural Equipment Research Institute Hunan Academy of Agricultural SciencesChangsha 410125China School of Agriculture Engineering and Food Science Shandong University of TechnologyZibo 255049China School of Chemistry University of New South WalesSydneyNSW 2052Australia Hunan Rice Research Institute Hunan Academy of Agricultural SciencesChangsha 410125China Longping Branch College of BiologyHunan UniversityChangsha 410125China Department of Materials Science and Engineering National University of SingaporeNo.21 Lower Kent Ridge RoadSingapore 119077Singapore

Laser-induced graphene(LIG)is a highly promising preparation material for electrochemical sensors;however,its preparation speed and nanomaterial modification steps significantly limit its mass ***,this study proposed a new laser printing strategy that considerably improved the preparation speed of LIG with excellent electrochemical *** the optimal parameters(laser power of 1%,scribing spacing of 0.12 mm,scribing speed of 100 mm·s^(−1)),it took only 14.2 s to complete the preparation of the detection ***,we successfully detected Cd^(2+)and Pb^(2+)without any toxic reagents or electrode modification *** limits of detection of the sensor were 0.914 and 0.916μg·L^(−1)for Cd^(2+)and Pb^(2+),respectively,which are significantly lower than the required values for drinking-water quality,according to the World Health Organization *** study provides a novel approach for the rapid detection of heavy-metal ions.

关键词： laser-induced graphene electrochemical sensor rapid fabrication heavy-metal ions

Membranes for the life sciences and their future roles in medicine

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Chinese Journal of Chemical Engineering 2022年第9期35卷 1-20页

作者： Xiaoyue Yao yu Liu Zhenyu chu Wanqin Jin State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China

Since the global outbreak of COVID-19,membrane technology for clinical treatments,including extracorporeal membrane oxygenation(ECMO)and protective masks and clothing,has attracted intense research attention for its irreplaceable *** research and applications are now playing an increasingly important role in various fields of life *** addition to intrinsic properties such as size sieving,dissolution and diffusion,membranes are often endowed with additional functions as cell scaffolds,catalysts or sensors to satisfy the specific requirements of different clinical *** this review,we will introduce and discuss state-of-the-art membranes and their respective functions in four typical areas of life science:artificial organs,tissue engineering,in vitro blood diagnosis and medical *** will be given to the description of certain specific functions required of membranes in each field to provide guidance for the selection and fabrication of the membrane *** advantages and disadvantages of these membranes have been compared to indicate further development directions for different clinical ***,we propose challenges and outlooks for future development.

关键词： Membrane Life science Artificial organ Tissue engineering In vitro blood diagnosis Medical support

Anti-fibrotic effect of rosmarinic acid on inhibition of pterygium epithelial cells

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International Journal of Ophthalmology(English edition) 2018年第2期11卷 189-195页

作者： Ya-yu Chen Chia-Fang Tsai ming-chu Tsai Wen-Kang Chen yu-Wen Hsu Fung-Jou Lu Institute of Medicine College of MedicineChung Shan Medical UniversityTaichung City 40201TaiwanChina Department of Biotechnology TransWorld UniversityDouliu City 64063TaiwanChina Department of Applied Cosmetology Tainan Junior College of NursingTainan City 70043TaiwanChina Department of Optometry Da-Yeh UniversityChanghua 51591TaiwanChina Department of Ophthalmology Chung Shan Medical University HospitalTaichung City 40201TaiwanChina

AIM： To investigate the anti-fibrosis effect of rosmarinic acid（RA） in pterygium epithelial cells（PECs） to determine if RA is a potent agent for treating ***： The PECs（1×10-4 cells/mL） were treated with 100 μmol/L of RA for 1, 3 and 6h. After RA treatment, the cell viability was determined by staining with acridine orange/DAPI and analysis via a NucleoC ounter NC-3000. The protein expression levels of type I collagen, transforming growth factor beta-1（TGF-β1）, TGF-β type Ⅱ receptor（TGF-βRⅡ）, p-Smad1/5, p-Smad2, p-Smad3, and Smad4 of the cell lysates were measured by Western blot ***： The cell viability of PECs was significantly decreased after RA treatment（P〈0.01）. As the result, RA reduced the protein expression of typeⅠcollagen and TGF-β1 of PECs. Additionally, RA also inhibited TGF-β1/Smad signaling by decreasing the protein expressions of TGF-βRII, p-Smad1/5, p-Smad2, p-Smad3, and ***： This study demonstrate that RA could inhibit fibrosis of PECs by down-regulating type I collagen expression and TGF-β1/Smad signaling. Therefore, RA is a potent therapeutic agent for the treatment of pterygium.

关键词： fibrosis pterygium rosmarinic acid transforming growth factor beta-1 typeⅠcollagen

Artificial transpiration: an efficient means of waste-water treatment

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National Science Review 2018年第2期5卷 120-121页

作者： ming Zhou Zongfu yu Department of Electrical and Computer Engineering University of Wisconsin—Madison

Efficient solar vapor generation has been attracting a lot of attention for its potential in various applications,such as desalination,sterilization and chemical purification with a minimal carbon *** progress has been achieved with materials designs for photon[1–3]and thermal management[4–6].However,with those improvements,losses re-

关键词： TRANSPIRATION (Physics) WASTEWATER treatment