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An integrated portable bio-monitoring system based on tough hydrogels for comprehensive detec.ion of physiological ac.ivities

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Nano Research 2024年第1期17卷 321-332页

作者： congcong Yang chenchen Ji Fengjiao Guo chunjiang Jin hongyu Mi Zhongchang Wang State Key Laboratory of chemistry and Utilization of carbon Based Energy Resources School of Chemical Engineering and TechnologyXinjiang UniversityUrumqi 830017China international iberian Nanotechnology Laboratory(iNL) Avenide Mestre Jose VeigaBraga 4715-330Portugal

Advanced soft ion-conduc.ing hydrogels have been developed rapidly in the integrated portable health monitoring equipment due to their higher sensitivity,sensory traits,tunable conduc.ivity,and stretchability for physiological ac.ivities and personal healthcare ***,traditional hydrogel conductors are normally susceptible to large deformation and strong mechanical stress,which leads to inferior electro-mechanical stability for real application ***,a strong ionically conduc.ive hydrogel(poly(vinyl alcohol)-boric acid-glycerol/sodium alginate-calcium chloride/electrolyte ions(PBG/Sc/Ei))was designed by engineering the covalently and ionically crosslinked networks followed by the salting-out effect to further enhance the mechanical strength and ionic conduc.ivity of the *** to the collec.ive effects of the energy-dissipation mechanism and salting-out effect,the designed PBG/Sc/Ei with excellent structural integrity and robustness exhibits exceptional mechanical properties(elongation at break for 559.1%and tensile strength of 869.4 kPa)and high ionic conduc.ivity(1.618 S·m^(-1)).As such,the PBG/Sc/Ei strain sensor features high sensitivity(gauge factor=2.29),which can effec.ively monitor various kinds of human motions(joint motions,facial micro-expression,faint respiration,and voice recognition).Meanwhile,the hydrogel-based Zn||MnO_(2)battery delivers a high capacity of 267.2 mAh·g^(-1)and a maximal energy density of 356.8 Wh·kg^(-1)associated with good cycle performance of 71.8%capacity retention after 8000 ***,an integrated bio-monitoring system with the sensor and Zn||MnO_(2)battery can accurately identify diverse physiological ac.ivities in a real-time and non-invasive *** work presents a feasible strategy for designing high-performance conduc.ive hydrogels for highly-reliable integrated bio-monitoring systems with excellent prac.icability.

关键词： ionically conduc.ive hydrogel strain sensor Zn-based battery integrated bio-monitoring system human motion monitoring

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High-resolution recognition of FOAM modes via an improved EfficientNet V2 based convolutional neural network

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Frontiers of physics 2024年第3期19卷 175-183页

作者： Youzhi Shi Zuhai Ma hongyu chen Yougang Ke Yu chen Xinxing Zhou international collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China Key Laboratory of Low-Dimensional Quantum Structures and Quantum control of Ministry of Education Synergetic Innovation Center for Quantum Effects and ApplicationsSchool of Physics and ElectronicsHunan Normal UniversityChangsha 410081China Key Laboratory of Hunan Province on information Photonics and Freespace Optical communications School of Information Science and EngineeringHunan Institute of Science and TechnologyYueyang 414006China

Vortex beam with frac.ional orbital angular momentum (FOAM) is the excellent candidate for improving the capacity of free-space optical (FSO) communication system due to its infinite modes. Therefore, the recognition of FOAM modes with higher resolution is always of great concern. in this work, through an improved EfficientNetV2 based convolutional neural network (cNN), we experimentally ac.ieve the implementation of the recognition of FOAM modes with a resolution as high as 0.001. To the best of our knowledge, it is the first time this high resolution has been ac.ieved. Under the strong atmospheric turbulence (AT) (c_(n)^(2)=10^(-15)m^(-2/3)), the recognition accuracy of FOAM modes at 0.1 and 0.01 resolution with our model is up to 99.12% and 92.24% for a long transmission distance of 2000 m. Even for the resolution at 0.001, the recognition accuracy can still remain at 78.77%. This work provides an effec.ive method for the recognition of FOAM modes, which may largely improve the channel capacity of the free-space optical communication.

关键词： OAM free-space optical communication deep learning convolutional neural network

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identification of carbonates with high positive carbon isotope excursion from the Liaohe Group in the northeastern North c.ina craton and implications for the Lomagundi-Jatuli Event

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Science c.ina Earth Sciences 2024年第9期67卷 2824-2844页

作者： hongyu WANG Shuanhong ZHANG Sen WANG Linghao KONG Yue ZHAO Qiqi ZHANG Sen GAO Guohui HU institute of Geomechanics Chinese Academy of Geological SciencesBeijing 100081China Key Laboratory of Paleomagnetism and Tectonic Reconstruc.ion Ministry of Natural ResourcesBeijing 100081China SinoProbe Laboratory Chinese Academy of Geological SciencesBeijing 100037China School of Earth Science and Mineral Resources China University of GeosciencesBeijing 100083China

The Great Oxidation Event(GOE)during the early Paleoproterozoic represents the first significant buildup in Earth’s atmospheric oxygen and resulted in a series of significant changes in the Earth’s surface *** them is the 2.22(or 2.33)–2.06 Ga Lomagundi-Jatuli Event(LJE),which is globally,the largest magnitude and longest duration,marine carbonate positive carbon isotope excursion(δ^(13)c_(V-PDB)>10‰)*** event has attracted the attention of scholars all over the ***,except for a high positive carbon isotope excursion(δ^(13)c_(V-PDB)>10‰)recently identified from marine carbonate rocks within the Daposhan Formation in the lower Fanhe Group(or the Sanchazi Group)in the Longgang Block in the northeast North c.ina craton(Ncc),Paleoproterozoic carbonates in the Ncc are characterized by a low-amplitude positive carbon isotope excursion(δ^(13)c_(V-PDB)is feature is significantly different from the high positive carbon isotope excursion characteristics of carbonates deposited during the LJE period in other *** determine whether there are large-scale and reliable sedimentary records of the LJE in the Ncc and the reasons for the low positive δ^(13)c excursion of the Paleoproterozoic carbonates obtained by the previous studies,we conducted field investigations,carbon-oxygen isotopes,and whole-rock major and trace element geochemical analyses of Liaohe Group carbonate rocks from the Anshan area in the northwestern margin of the Jiao-Liao-Ji Belt in the northeast *** results show that the Gaojiayu Formation of the Liaohe Group in the Anshan area has high positive δ^(13)c_(V-PDB) values from 8.6‰ to 12.4‰ and δ^(18)O_(V-SMOW) values of 17.9‰-27.4‰(δ^(18)O_(V-PDB) values ranging from−12.6‰to -3.4‰).This provides solid evidence for the preservation of reliable sedimentary records of the LJE in the northeastern *** of the high positive δ^(13)c excursion(>10‰)of marine carbonate rocks occurred at about 2.15 *** co

关键词： Lomagundi-Jatuli Event(LJE) Great Oxidation Event(GOE) carbon-oxygen isotopes Liaohe Group Marine carbonate Jiao-Liao-Ji Belt North c.ina craton

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逃离导向基团:非活化烯烃的不对称碳-碳键构筑

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Science Bulletin 2024年第3期69卷 290-292页

作者： hongyu Zhong Bill Morandi Laboratorium für Organische chemie ETH ZürichZürich 8093Switzerland

Unfunc.ionalized olefins are produced on an enormous scale in the petroleum *** example,propene and butenes are produced annually on over 100-and 40-million-ton *** metal catalysis is an attrac.ive approach for the valorization of such chemical feedstocks,which provides value-added building blocks that can be further transformed into pharmaceuticals and func.ional ***,unfunc.ionalized olefins are relatively inert molecules due to their weak interac.ion with the metal ***,the func.ionalization of unac.ivated olefins has been a long-standing challenge in transition metal *** use of direc.ing groups has become a universal strategy to overcome the reac.ivity and selec.ivity issues[1].Direc.ing groups are strongly binding func.ionalities that serve to coordinate to the metal center and bring the unac.ivated moiety closer to the metal.

关键词： moiety overcome closer

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Polyelectrolyte complex-based thermochromic hydrogels containing carbonized polymer dots for smart windows with fast response,excellent solar modulation ability,and high durability

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SmartMat 2024年第2期5卷 124-136页

作者： Yuting Wang Xu Fang Siheng Li Ni An hongyu Pan Junqi Sun State Key Laboratory of Supramolecular Structure and Materials Jilin UniversityChangchunChina

Thermochromic smart windows have gained increasing popularity in light modulation and energy management in ***,the fabrication of flexible thermochromic smart windows with high luminous transmittance(Tlum),tailorable c.itical temperature(τc),strong solar modulation ability(ΔTsol),and long-term durability remains a huge *** this study,hydrogel-based thermochromic smart windows are fabricated by sandwic.ing thermochromic hydrogels of polyallylamine hydrochloride,polyacrylic acid,and carbonized polymer dots(cPDs)complexes between two pieces of transparent *** from the incorporation of nanosized cPDs,the thermochromic hydrogel has an ultrahigh Tlum of~98.7%,a desirableτc of~24.2℃,aΔTsol of~89.3%and a rapid transition time of~3 s from opaque state to transparent ***,the thermochromic hydrogel exhibits excellent anti-freezing ability,tight adhesion toward various substrates,and excellent self-healing *** self-healing capability enables the fabrication of large-area smart windows by welding multiple hydrogel *** smart windows retain their original thermochromic properties after being stored under ambient conditions for at least 147 days or undergoing 10,000 uninterrupted heating/cooling *** model houses with smart windows can ac.ieve a temperature reduc.ion of 9.2℃,demonstrating the excellent indoor temperature modulation performance of the smart windows.

关键词： carbonized polymer dots polyelectrolyte complexes smart windows thermochromic hydrogels

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Neuroinflammation attenuation effects by celastrol and PDiA3 in the amygdala, hippocampus and dorsal raphe nucleus of obese mice

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Journal of Pharmaceutical Analysis 2024年第2期14卷 287-290页

作者： chunyan Zhu Xuemin Yao Dandan Liu Guoxin Zhang Yongping Zhu hongyu c.i Shuangpan Zhang Jun Yang Ying Liu Jigang Wang Na Lin institute of c.inese Materia Medica China Academy of Chinese Medical SciencesBeijing100700China

Nowadays,roughly 603.7 million people are bothered by obesity[1].More seriously,obesity brings inflammation to the peripheral and central nervous system,which compromises the comorbidity of obesity,major depression[2],and cognitive deficits[3].Drug competent in the comorbidity is still *** 2015,Liu et al.[4]reported celastrol(cEL)as a powerful anti-obesity *** our previous study.

关键词： inflammation obesity obese

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Modification of the cuO electronic structure for enhanced selec.ive electrochemical cO_(2) reduc.ion to ethylene

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Nano Research 2024年第8期17卷 7194-7202页

作者： Xin Wu Zhuang Tong Yunliang Liu Yaxi Li Yuanyuan cheng Jingwen Yu Peng cao chunqiang Zhuang Qiuzhong Shi Naiyun Liu Xiang Liu hongyu Liang Haitao Li institute for Energy Research School of Energy and Power EngineeringJiangsu UniversityZhenjiang 212013China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China institute of Medicine&chemical Engineering Zhenjiang CollegeZhenjiang 212013China institute of Advanced Manufacturing and Modern Equipment Technology School of Mechanical EngineeringJiangsu UniversityZhenjiang 212013China

Electrochemical carbon dioxide reduc.ion reac.ion(cO_(2)RR)can produce value-added hydrocarbons from renewable electricity,providing a sustainable and promising approach to meet dual-carbon targets and alleviate the energy ***,it is still challenging to improve the selec.ivity and stability of the products,especially the c^(2+) *** we propose to modulate the electronic structure of copper oxide(cuO)through lattice strain construc.ion by zinc(Zn)doping to improve the selec.ivity of the catalyst to *** performance and in situ characterization analyses show that the compressive strain generated within the cuO lattice and the electronic structure modulation by Zn doping enhances the adsorption of the key intermediate*cO,thereby increasing the intrinsic ac.ivity of cO_(2)RR and inhibiting the hydrogen precipitation *** the best catalysts had significantly improved ethylene selec.ivity of 60.5%and partial current density of 500 mA·cm^(–2),and the highest c^(2+) Faraday efficiency of 71.47%.This paper provides a simple idea to study the modulation of cO_(2)RR properties by heteroatom doped and lattice strain.

关键词： cO_(2) reduc.ion heteroatom-doped lattice strain ethylene selec.ivity

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含挖填界面边坡三维稳定性上限分析

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岩土工程学报 2024年第1期46卷 174-181页

作者：闫超王红雨宁夏大学土木与水利工程学院宁夏银川750021

针对工程实践中挖填交界面与边坡坡面走向线斜交的高边坡空间三维稳定分析问题,基于极限分析上限定理,构建拓展的三维牛角状破坏机构,通过引入机构参数挖填界面倾角α突出边坡特性,建立与之对应的功能平衡方程,采用序列二次规划优化算... 详细信息

针对工程实践中挖填交界面与边坡坡面走向线斜交的高边坡空间三维稳定分析问题,基于极限分析上限定理,构建拓展的三维牛角状破坏机构,通过引入机构参数挖填界面倾角α突出边坡特性,建立与之对应的功能平衡方程,采用序列二次规划优化算法求解强度折减后的边坡安全系数上限解。在此基础上,计算了宁夏黄土丘陵地区妙岭750kV变电站高边坡以及相关文献中极限状态下边坡稳定性系数γH/c工程案例,并将计算结果与有限元极限分析软件模拟值进行对比分析。结果表明:随着挖填界面倾角α的增大,边坡安全系数Fs上限解和模拟值均减小,两种方法的计算结果相对误差在5.9%以内,且拓展的破坏机构与数值模拟的剪切耗散变形模式基本一致;在极限状态下,拓展机构的上限解和数值模拟结果都十分接近于1.0,二者相对误差未超过8.3%。研究工作为此类高边坡空间稳定分析问题提供了一种简便实用的计算方法。

关键词：边坡稳定性上限分析挖填界面三维效应安全系数

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compound heterozygous mutation of AFG3L2 causes autosomal recessive spinocerebellar ataxia through mitochondrial impairment and MicU1 mediated caoverload

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Science c.ina Life Sciences 2024年

作者： hongyu Li Qingwen Ma Yan Xue Linlin c.i Liwen Bao Lei Hong Yitao Zeng Shuzhen Huang Richard H.Finnell Fanyi Zeng Shanghai institute of Medical Genetics Shanghai Children's Hospital Shanghai Jiao Tong University School of Medicine Department of Histo-Embryology Genetics and Developmental Biology Shanghai Jiao Tong University School of Medicine NHc Key Laboratory of Medical Embryogenesis and Developmental Molecular Biology Shanghai Key Laboratory of Embryo and Reproduction Engineering center for Precision Environmental Health Baylor College of Medicine School of Pharmacy Macau University of Science and Technology

Autosomal recessive spinocerebellar ataxias（ScARs） are one of the most common neurodegenerative diseases characterized by progressive ataxia. Although ScARs are known to be caused by mutations in multiple genes, there are still many cases that go undiagnosed or are misdiagnosed. in this study, we presented a ScAR patient, and identified a probable novel pathogenic mutation（c.1A>G, p.M1V） in the AFG3L2 start codon. The proband's genotype included heterozygous mutations of the compound AFG3L2(p.[M1V]; [R632X]（c.[1A>G];[1894.c>T]）), which were inherited from the father（c.1A>G, p.M1V） and mother（c.1894c>T, p.R632X）. Func.ional studies performed on hiPScs（human induced pluripotent stem cells） generated from the patients and HEK293T cells showed that the mutations impair mitochondrial func.ion and the unbalanced expression of AFG3L2 mRNA and protein levels. Furthermore, this novel mutation resulted in the degradation of the protein and the reduc.ion of the stability of the AFG3L2 protein, and McU（mitochondrial calcium uniporter） complex mediated ca2+overload.

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可见光促进惰性碳-氢键对羰基的加成反应进展

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有机化学 2024年第1期44卷 54-69页

作者：童红恩郭宏宇周荣太原理工大学化学学院太原030024

仲醇和叔醇是重要的有机化合物,其结构普遍存在于具有生物活性的天然产物和药物分子中,且可以作为上游原料制备多种高附加值化学品.在众多合成方法中,醛酮的亲核加成反应是合成此类化合物最有效的方法之一,但通常需要使用预官能化底物,... 详细信息

仲醇和叔醇是重要的有机化合物,其结构普遍存在于具有生物活性的天然产物和药物分子中,且可以作为上游原料制备多种高附加值化学品.在众多合成方法中,醛酮的亲核加成反应是合成此类化合物最有效的方法之一,但通常需要使用预官能化底物,不仅效率较低,且原子经济性不高.可见光催化的兴起,为惰性碳-氢键的活化提供了一种温和高效的方法,促进了惰性碳-氢键直接对醛酮加成反应的发展,推动仲醇和叔醇的合成进入新的阶段.根据反应机理的不同,分别对经由还原性自由基-极性交叉、自由基-自由基交叉偶联和自由基加成机制的三类可见光诱导的惰性碳-氢键对羰基的加成反应进行了综述,并对该领域的局限性和未来发展方向做出了简要分析.

关键词：仲醇叔醇可见光催化还原性自由基-极性交叉自由基-自由基交叉偶联自由基加成

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