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Highly stable capacitive tactile sensors with tunable sensitivity facilitated by electrostatic interaction of layered double hydroxide,MXene,and Ag NWs

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Science China(Technological Sciences) 2023年第11期66卷 3287-3297页

作者： SHEN GengZhe huang weiqing LI HaiFeng WANG FengMing SU DaoJian LI BaiJun ZHANG BoLun LIANG Ping ZHANG Chi XIN Yue HE Xin School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006China

A capacitive tactile sensor(CTS)has been developed by assembling a double-sided patterned dielectric layer and novel *** patterned aluminium foil-supported electrode comprises zinc-aluminium layered double hydroxides(Zn AlLDH),MXene,and Ag NWs via electrostatic *** flexible device enables greater structural deformation,thereby enhancing sensitivity to a wide range of *** sensitivity of the CTS can be customized to meet specific requirements by matching the microstructured electrodes with the patterned dielectric *** optimized sensor exhibits a sensitivity of 2.752 kPa^(–1)within 30 kPa,a response time of approximately 100 ms,and a wide detection range of 0–300 *** strong physical interaction among the electrode materials ensures a reliable conductive network,ensuring the long-term stability of the sensor,even after 7500 loading and unloading ***,the fabricated CTS device presents a promising prospect for the integration into wearable electronics,with the ability to effectively respond to both human activities and external physical stimuli.

关键词： capacitive tactile sensor adjustable sensitivity long-term durability human activity monitoring

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分体挂壁空调内机贯流风机系统音质研究

家电科技 2015年第8期 63-65页

作者：黄伟青珠海格力电器股份有限公司广东珠海519070

运用CFD软件Fluent6.0对分别配置光面蜗舌和齿状蜗舌的风机系统进行二维流场的数值模拟,并同时对配置了这两种蜗舌的风机系统噪声和其他性能参数进行实验测量。通过对两者数值模拟与实际测量测数据的结果进行初步的分析,以探寻贯流风机... 详细信息

运用CFD软件Fluent6.0对分别配置光面蜗舌和齿状蜗舌的风机系统进行二维流场的数值模拟,并同时对配置了这两种蜗舌的风机系统噪声和其他性能参数进行实验测量。通过对两者数值模拟与实际测量测数据的结果进行初步的分析,以探寻贯流风机系统降噪、音质优化的指导性设计思路。

关键词：贯流风叶蜗舌涡流噪声数值模拟

定量CT肺密度在慢性阻塞性肺疾病急性加重患者气管插管中的预测价值

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中国急救医学 2024年第9期44卷 796-800页

作者：范继芳张溱乐黄伟青梁庆曾量波王锡达张贤亮陈淮刘韵广州医科大学附属第一医院急诊科广东广州510120 广州医科大学第一临床学院广东广州511495 广州医科大学附属第二医院医学影像科广东广州510260 广州医科大学附属第一医院医学影像科广东广州510120

目的探讨定量CT肺密度在慢性阻塞性肺疾病急性加重(AECOPD)患者气管插管中的预测价值。方法回顾性分析广州医科大学附属第一医院急诊科2019年1月至2023年12月收治的78例AECOPD患者,依据住院期间接受不同类型的机械通气方式分为对照组(... 详细信息

目的探讨定量CT肺密度在慢性阻塞性肺疾病急性加重(AECOPD)患者气管插管中的预测价值。方法回顾性分析广州医科大学附属第一医院急诊科2019年1月至2023年12月收治的78例AECOPD患者,依据住院期间接受不同类型的机械通气方式分为对照组(无创呼吸机辅助通气,n=50)和研究组(气管插管辅助通气,n=28),收集并分析两组一般资料、实验室检查和定量CT肺密度参数,通过多因素Logistic回归分析探索各因素对气管插管结局的影响程度,最后采用受试者工作特征(ROC)曲线分析定量CT肺密度参数对气管插管结局的预测价值。结果与对照组比较,研究组降钙素原(PCT)、低通气肺组织、无通气肺组织、受损肺组织百分率升高,二氧化碳分压(PaCO_(2))和氧合指数(PaO_(2)/FiO_(2))降低,差异均有统计学意义(P均<0.05)。多因素Logistic回归分析显示,受损肺组织[OR(95%CI)=1.207(1.030~1.415)]是AECOPD气管插管的危险因素(P<0.05)。Spearman相关性分析显示,受损肺组织与PaO_(2)/FiO_(2)呈负相关(r s=-0.516,P<0.001)。ROC曲线分析显示,受损肺组织[曲线下面积(AUC)=0.705]对AECOPD患者气管插管具有显著预测价值(P<0.05),截断值为11.5%。结论受损肺组织可预测AECOPD患者气管插管,为早期识别重症患者提供帮助。

关键词：慢性阻塞性肺疾病急性加重肺密度气管插管无创通气受损肺组织

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低盐养殖对拟穴青蟹肌肉营养成分的影响

水产学杂志 2024年第3期37卷 74-80,93页

作者：陈思仪黄鑫岚李婷婷刘铮吴周宇邵逸臻张丽梅黄伟卿宁德师范学院生命科学与工程学院福建宁德352100 宁德师范学院海洋学院福建宁德352100 闽东水产品精深加工福建省高校工程研究中心福建宁德352100 宁德市鼎诚水产有限公司福建宁德352100

为探究低盐对拟穴青蟹(Scalla paramamosain)肌肉营养成分的影响,将平均体质量为(254.00±36.81)g的拟穴青蟹在循环水中饲养60 d,一蟹一盒。试验将盐度25的正常海水直接降至20,再以日均2.5的幅度将盐度降至15和10,最后以日均2的幅度将... 详细信息

为探究低盐对拟穴青蟹(Scalla paramamosain)肌肉营养成分的影响,将平均体质量为(254.00±36.81)g的拟穴青蟹在循环水中饲养60 d,一蟹一盒。试验将盐度25的正常海水直接降至20,再以日均2.5的幅度将盐度降至15和10,最后以日均2的幅度将盐度降至5,使试验组盐度分别为5(S_(5))、10(S_(10))、15(S_(15))、20(S_(20))和25(S_(25),对照组),每组设3个重复,每组30只蟹。结果显示:低盐养殖青蟹的肌肉粗蛋白含量变化在(16.2±1.9)%~(19.5±0.7)%之间,与对照组无明显差异;S_(10)组蟹肌肉粗脂肪含量显著高于对照组S_(25)(P<0.05);S_(15)组的肌肉氨基酸总量(TAA)为(18.63±0.91)%,必需氨基酸(EAA)(6.49±0.41)%和呈味氨基酸(DAA)(7.48±0.21)%均高于对照组,氨基酸指数(EAAI)最优为80.36。S_(10)组的高度不饱和脂肪酸(HUFA)与EPA含量显著高于对照组(P<0.05),n-3族多不饱和脂肪酸(∑n-3PUFA)含量为33.0%,达到最高。结果表明,在10~15的低盐环境下养殖拟穴青蟹,有助于改善肌肉营养。

关键词：拟穴青蟹低盐度肌肉营养成分

Synthesis of a Novel UV-curable Prepolymer Hexanediol Diglycidyl Ether Diacrylate and Its Cured Film Tensile Property

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Journal of Wuhan University of Technology(Materials Science) 2011年第1期26卷 4-9页

作者：黄笔武 School of Material Science and Engineering Nanchang University

A novel UV-curable prepolymer hexanediol diglycidyl ether diacrylate （HDGEA） was synthesized by utilizing hexanediol diglycidyl ether （HDGE） and acrylic acid （AA） as starting materials, N, N-dimethylbenzylamine as catalyst and p-hydroxyanisole as inhibitor. The optimal synthetic conditions were that the concentration of N, N-dimethylbenzylamine was 0.80 wt% of reactants, the concentration of p-hydroxyanisole was 0.3 wt% of reactants, the reaction temperature was 90-110 ℃, and the molar ratio of HDGE to AA was 1︰2.2. Meanwhile, 1-hydroxycyclohexyl phenyl ketone of a UV-curing initiator was added to the synthesized HDGEA to prepare a kind of UV-curing coating. The mechanical properties of the UV-cured films were determined, giving 31.87 MPa of tensile strength, 871.88 MPa of Young＇s modulus and 6.77% of elongation at tear.

关键词： hexanediol diglycidyl ether diacrylate synthesis acrylic acid UV-curable prepolymer film

Broadband coplane metamaterial filter based on two nested split-ring-resonators

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Frontiers of Optoelectronics 2016年第4期9卷 565-570页

作者： Benxin WANG Xiang ZHAI Guizhen WANG weiqing huang Lingling WANG School of Physics and Electronics Hunan University Changsha 410082 China Modern Educational Technology Center Htman Traditional Chinese Medica~l College Zimzhou 412012 China

Split ring resonators （SRRs）-based broadband metamaterial filters have attracted considerable attention due to their great prospect of practical applications. These filters had been usually obtained by stacking multiple different-sized metallic patterns, making their fabrication quite troublesome. Herein, we presented a simple design of broadband filter composed of two nested SRRs. The resonance bandwidth of the metamatefial filter gradually increased with the decrease of the ann length of the inner SRR. The increase in the resonance bandwidth was attributed to the increase in the radiation of the entire structure. Moreover, the bandwidth of the metamaterial can be further broadened by decreasing the period of the structure. The proposed filter provides a meaningful way toward expanding the bandwidth operating range from narrowband to broadband in an effective way.

关键词： metamaterial broadband filter split-ring-reso-nators

Morphological changes and variations in Na+/K+-ATPase activity in the gills of juvenile large yellow croaker (Larimichthys crocea) at low salinity

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Aquaculture and Fisheries 2022年第3期7卷 313-320页

作者： Guangliang Teng weiqing huang Chenglong Ji Yunlong Chen Xiujuan Shan College of Fisheries and Life Science Shanghai Ocean UniversityShanghai201306China Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Yellow Sea Fisheries Research Institute Chinese Academy of Fishery ScienceQingdao266071China College of Life Science Ningde Normal UniversityNingde352100China Ningde Dingcheng Fishery Company Limited Ningde352000China Yantai Institute of Coastal Zone Research Chinese Academy of SciencesYantai264003China

Gill morphological changes and physiological responses in juvenile large yellow croaker(Larimichthys crocea)were examined upon exposure to low salinity after indoor culture of the fish at salinities of 2,4,6,8,and 24‰(control group).The thickness of the lamellae was significantly higher in the low-salinity groups than in the control group;in contrast,the interlamellar space was significantly lower in the low-salinity groups than in the control ***,a significant negative correlation was found between the thickness of lamellae and interlamellar spaces(P<0.01).Mitochondria-rich cells(MRCs)were mainly found in the filament at 24‰salinity and proliferated in the lamellae at lower salinities,suggesting that filament and lamellar MRCs are responsible for ion secretion and absorption,***,the activity of Na+/K+-ATPase(NKA)was significantly elevated with the decrease in salinity from 24‰to 4‰(P<0.05),which was consistent with MRCs ***,the activity of NKA declined at 2‰salinity(P<0.05),indicating the limit of osmoregulation,which was consistent with the degeneration and necrosis of the ***,different levels of gill histopathological lesions,including pavement cell(PVC)exfoliation,lamellar epithelial lifting,edema,fusion,aneurism,and necrosis,were observed from salinities of 24 to 4‰,likely reducing the respiratory efficiency and compromising the health of juvenile *** conclusion,large yellow croaker juveniles could improve the osmoregulatory capacity by increasing lamellar MRCs and NKA activity with the decrease in salinity from 24 to 4‰.However,the associated histopathological lesions are likely to negatively influence the fish by affecting respiration and osmoregulation,especially when the salinity is below 4‰.

关键词： Larimichthys crocea Osmoregulation Gill morphology Histopathological lesions Low salinity

Low-Enthalpy and High-Entropy Polymer Electrolytes for Li-Metal Battery

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Energy & Environmental Materials 2024年第1期7卷 91-99页

作者： Haitao Zhang Yuchen Wang Junfeng huang Wen Li Xiankan Zeng Aili Jia Hongzhi Peng Xiong Zhang weiqing Yang Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China

lonic-conductive solid-state polymer electrolytes are promising for the development of advanced lithium batteries yet a deeper understanding of their underlying ion-transfer mechanism is needed to improve *** we demonstrate the low-enthalpy and high-entropy(LEHE)electrolytes can intrinsically generate remarkably free ions and high mobility,enabling them to efficiently drive lithium-ion *** LEHE electrolytes are constructed on the basis of introducing CsPbl_(3)perovskite quantum dots(PQDs)to strengthen PEO@LiTFSI *** extremely stable cycling>1000 h at 0.3 mA cm^(-2)can be delivered by LEHE ***,the as-developed Li|LEHE|LiFePO_(4)cell retains 92.3%of the initial capacity(160.7 mAh g^(-1))after 200 *** cycling stability is ascribed to the suppressed charge concentration gradient leading to free lithium *** is realized by a dramatic increment in lithium-ion transference number(0.57 vs 0.19)and a significant decline in ion-transfer activation energy(0.14 eV vs 0.22 eV)for LEHE electrolytes comparing with PEO@LiTFSI *** CsPbl_(3)PQDs promote highly structural disorder by inhibiting crystallization and hence endow polymer electrolytes with low melting enthalpy and high structural entropy,which in turn facilitate long-term cycling stability and excellent rate-capability of lithium-metal batteries.

关键词： charge concentration gradient lithium dendrites lithium-metal battery low-enthalpy and high-entropy polymer electrolyte

Ni元素对Zn-22Al药芯钎料用于Cu/Al钎焊接头组织和力学性能的影响

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中国计量大学学报 2024年第3期35卷 487-495页

作者：王徐炳黄魏青王思鸿卜永周查心婧刘薇沈杭燕中国计量大学材料与化学学院浙江杭州310018 杭州华光焊接新材料股份有限公司浙江杭州311112

目的:研究Ni元素对Zn-Al药芯焊丝熔化特性、铺展性能的影响。方法:在钎剂中添加一定比例的Ni粉,在钎焊过程中形成Cu/Al接头的Ni合金化,分析不同含量Ni元素添加对Zn-22Al钎料以及Cu/Al异种合金钎焊接头的性能及显微组织的影响。结果:Ni... 详细信息

目的:研究Ni元素对Zn-Al药芯焊丝熔化特性、铺展性能的影响。方法:在钎剂中添加一定比例的Ni粉,在钎焊过程中形成Cu/Al接头的Ni合金化,分析不同含量Ni元素添加对Zn-22Al钎料以及Cu/Al异种合金钎焊接头的性能及显微组织的影响。结果:Ni粉添加可使Zn-22Al钎料在Al板上的铺展性能得到提升,当添加量质量分数为5%时钎料铺展性能提升26.75%;当添加量质量分数为7%时,用于Cu/Al钎焊的接头抗拉强度相较于未添加Ni粉焊接接头强度提升61.79%。结论:Ni粉添加可有效改善Zn-22Al焊缝的显微组织,体现为主晶相的细化,富Zn边界相的减少,促进主晶团之间形成层片状共析组织,以及减小了Cu侧生成的铜铝金属间化合物脆性相的厚度。

关键词： Zn-Al钎料 Ni原位掺混铜铝异种接头力学性能显微组织