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Developing MXenes from Wireless Communication to Electromagnetic Attenuation

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Nano-Micro Letters 2021年第7期13卷 188-221页

作者： Peng He Mao-Sheng cao Wen-qiang cao Jie Yuan School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Information Engineering Minzu University of ChinaBeijing 100081People’s Republic of China

There is an urgent global need for wireless communication utilizing materials that can provide simultaneous flexibility and high *** the harmful effects of electromagnetic(EM)radiation from wireless communication is a persistent research hot ***-dimensional(2D)materials are the preferred choice as wireless communication and EM attenuation materials as they are lightweight with high aspect ratios and possess distinguished electronic ***,as a novel family of 2D materials,have shown excellent properties in various fields,owing to their excellent electrical conductivity,mechanical stability,high flexibility,and ease of *** date,research on the utility of MXenes for wireless communication has been actively ***,MXenes have become the leading materials for EM ***,we systematically review the recent advances in MXene-based materials with different structural designs for wireless communication,electromagnetic interference(EMI)shielding,and EM wave *** relationship governing the structural design and the effectiveness for wireless communication,EMI shielding,and EM wave absorption is clearly ***,our review mainly focuses on future challenges and guidelines for designing MXene-based materials for industrial application and foundational research.

关键词： MXene Wireless communication Electromagnetic wave absorption Electromagnetic interference shielding

Analysis of mechanical strengths of extreme line casing joint considering geometric, material, and contact nonlinearities

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Petroleum Science 2024年第3期21卷 1992-2004页

作者： Ji-Yun Zhang Chi Peng Jian-Hong fu Quan cao Yu Su Jian-Yun Pang Zi-qiang Yu Petroleum Engineering School Southwest Petroleum UniversityChengdu610500SichuanChina Engineering Technology Research Institute of CNPC Southwest Oil and Gas Field Company Chengdu610017SichuanChina

To address the challenges associated with difficult casing running,limited annular space,and poor cementing quality in the completion of ultra-deep wells,the extreme line casing offers an effective solution over conventional ***,due to its smaller size,the joint strength of extreme line casing is reduced,which may cause failure when running in the *** address this issue,this study focuses on the CST-ZTΦ139.7 mm×7.72 mm extreme line casing and employs the elastic-plastic mechanics to establish a comprehensive analysis of the casing joint,taking into account the influence of geometric and material nonlinearities.A finite element model is developed to analyze the forces and deformations of the extreme line casing joint under axial tension and external collapse *** model investigates the stress distribution of each thread tooth subjected to various tensile forces and external ***,the tensile strength and crushing strength of the extreme line casing joint are determined through both analytical and experimental *** findings reveal that,under axial tensile load,the bearing surface of each thread tooth experiences uneven stress,with relatively high equivalent stress at the root of each thread *** end thread teeth are valuable spots for *** is observed that the critical fracture axial load of thread decreases linearly with the increase of thread tooth *** external pressure,the circumferential stress is highest at the small end of the external thread,leading to yield *** tensile strength of the joint obtained from the finite element model exhibits a relative error of less than 7%compared to the analytical and experimental values,proving the reliability of the finite element *** tensile strength of the joint is 3091.9 k ***,in terms of anti-collapse capability,the joints demonstrate higher resistance to collapse compared to the casing body,which is consistent with the test resul

关键词： Extreme line casing Elastic-plastic mechanics Finite element analysis Tensile strength Collapse strength

基于TRM法的移动荷载作用下层状非饱和土地基动力响应研究

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工程力学 2025年第2期42卷 153-163页

作者：马强黄业禹周凤玺曹小林青海大学土木工程学院西宁810016 青海省建筑节能材料与工程安全重点实验室西宁810016 兰州理工大学土木工程学院兰州730050

根据非饱和多孔介质理论,建立了二维层状非饱和土地基的计算模型,研究了移动荷载作用下层状非饱和土体的动力响应问题。通过Fourier变换和Helmholtz矢量分解原理,采用传递、反射矩阵(TRM)法,结合边界及层间连续条件推导获得了二维层状... 详细信息

根据非饱和多孔介质理论,建立了二维层状非饱和土地基的计算模型,研究了移动荷载作用下层状非饱和土体的动力响应问题。通过Fourier变换和Helmholtz矢量分解原理,采用传递、反射矩阵(TRM)法,结合边界及层间连续条件推导获得了二维层状非饱和土地基在频域中的动力响应解答,并利用Fourier逆变换得到了层状非饱和土体中位移、应力和孔隙压力的数值解。通过数值算例分析讨论了均质土、软夹层和硬夹层三种层状地基中荷载移动速度、土层剪切模量、饱和度和荷载频率对其动力响应的影响规律。研究结果表明:层状非饱和土地基中当荷载移动速度接近非饱和土地基中Rayleigh波速时会引起土体产生共振,地表竖向位移迅速增大到峰值;层状非饱和土地基中土层的排列次序对地表位移影响显著,与均质土地基相比,硬夹层地基的地表竖向位移大,而软夹层地基的地表竖向位移小;饱和度对层状非饱和土地基动力响应影响显著;随着荷载频率的增大,三种层状地基的位移沿水平距离方向呈现出明显波动性。

关键词：层状地基非饱和土移动荷载动力响应传递、反射矩阵法

Identification and Pathogen Stimulation Patterns of Neuronal Nitric Oxide Synthase(nNOS)in Black Rockfish(Sebastes schlegelii)

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Journal of Ocean University of China 2023年第3期22卷 842-850页

作者： YAN Xu WANG Ningning cao Min LI Chao YANG Ning XUE Ting fu qiang SONG Lin College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266044China School of Marine Science and Engineering Qingdao Agricultural UniversityQingdao 266109China Shandong Provincial Key Laboratory of Biochemical Engineering College of Marine Science and Biological EngineeringQingdao University of Science and TechnologyQingdao 266042China Wuqiong Food Co. Ltd.Raoping 515726China

Neuronal nitric oxide synthase(nNOS)was the producer of nitric oxide(NO)which played important gas messenger molecules in biological *** also can take effect as immune regulation molecule in *** rockfish(Sebastes schlegelii)is an important economic fish which were widely farmed in East Asia ***,the pathogenic bacteria such as the Edwardsiella tarda and Vibrio anguillarum in seawater always brought serious obstacles to their healthy *** order to explore the expression pattern of n NOS gene under the pathogen stimulation and predict its immune function,the n NOS gene in black rockfish named Ssn NOS was *** was 3780 bp in length,located on chromosome 6,and contained 27 coding domain sequence(CDs).According to the phylogenetic analysis,the Ssn NOS showed closest relative to the counterpart gene of swamp eel(Monopterus albus).Meanwhile,analysis of Ssn NOS expression in various healthy tissues showed that Ssn NOS expression level was highest in healthy brain tissues,followed by intestinal *** addition,Ssn NOS showed significant expression changes in response to stimulation by two *** in gill,the expression of Ssn NOS after pathogenic stimulation increased *** Elisa analysis showed the Ssn NOS content in gills was much higher than that in other tissues at all time ***,the expression patterns of Ssn NOS in brain,intestine and kidney after stimulation by pathogens showed a distinct expression pattern which first down-regulated and then ***,the Ssn NOS may be an important signaling molecule for fish to respond rapidly in immune stimulation.

关键词： neuronal nitric oxide synthase black rockfish immune function Edwardsiella tarda Vibrio anguillarum

不同施肥处理种植王草后对稀土尾矿土壤理化性质和酶活性的影响

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草业学报 2025年第2期34卷 94-108页

作者：欧翔连海陈荣强邱静芸吴丽娟操贤洪张强雷小文赣州市畜牧水产研究所江西赣州341401

为探究不同施肥处理对种植王草修复稀土尾矿土壤的改良效果,设置化肥(CK)、沼液(Z)、腐熟牛粪(N)、腐熟牛粪+沼液(N+Z)、蚯蚓粪(Q)、蚯蚓粪+沼液(Q+Z)6个处理进行田间等氮量施肥试验,分析连续3年各处理对稀土尾矿土壤理化性质、酶活性... 详细信息

为探究不同施肥处理对种植王草修复稀土尾矿土壤的改良效果,设置化肥(CK)、沼液(Z)、腐熟牛粪(N)、腐熟牛粪+沼液(N+Z)、蚯蚓粪(Q)、蚯蚓粪+沼液(Q+Z)6个处理进行田间等氮量施肥试验,分析连续3年各处理对稀土尾矿土壤理化性质、酶活性及其相互作用规律的影响。结果表明:(1)连续3年各组土壤容重呈下降趋势,最大持水量、毛管持水量、孔隙度、通气度、pH、有机质、氮、磷、钾、碱解氮、速效磷呈上升趋势;在修复第3年Q+Z组对土壤容重、持水量、孔隙度、通气度、pH、速效磷、速效钾的改良效果优于其他处理。(2)连续3年N、N+Z、Q、Q+Z组土壤脲酶、酸性磷酸酶、蔗糖酶活性呈上升趋势,第3年均显著高于CK组,土壤脱氢酶活性仅N+Z组第1年显著高于同期CK组,其中Q组对土壤脲酶、酸性磷酸酶、蔗糖酶活性的提升优于其他处理。(3)土壤脲酶、酸性磷酸酶、蔗糖酶活性与土壤容重呈极显著负相关,与pH、有机质、速效养分、持水量、孔隙度、通气度呈极显著相关,脱氢酶活性与全磷呈极显著相关,与全钾、碱解氮、速效磷、有机质、毛管持水量、孔隙度、通气度显著相关。通过模糊数学隶属函数法进行综合评价发现,施用蚯蚓粪+沼液处理连续3年综合排序第一,可作为种植王草修复赣南离子型稀土尾矿土壤的最佳施肥处理。

关键词：稀土尾矿王草施肥土壤理化性质土壤酶活性

Mean-square Stability of Stochastic Age-dependent Delay Population Systems with Jumps

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Acta Mathematicae Applicatae Sinica 2018年第1期34卷 145-154页

作者： qiang LI Qi-min ZHANG Bo-qiang cao School of Mathematics and Statistics Ningxia University Yinchuan 750021 China School of Mathematics and Information Sciences Beifang University of Nationalities Yinchuan 750021 China

In this paper, we present the compensated stochastic θ method for stochastic age-dependent delay population systems（SADDPSs） with Poisson jumps. The definition of mean-square stability of the numerical solution is given and a sufficient condition for mean-square stability of the numerical solution is derived. It is shown that the compensated stochastic θ method inherits stability property of the numerical solutions. Finally,the theoretical results are also confirmed by a numerical experiment.

关键词： stochastic age-dependent delay population systems compensated stochastic θ method poisson jumps mean-square stability

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零记忆增量学习的复合有源干扰识别

电子与信息学报 2025年第1期47卷 188-200页

作者：吴振华崔金鑫曹宜策张强张磊杨利霞安徽大学信息材料与智能感知安徽省实验室合肥230601 中国电子科技集团公司第三十八研究所合肥230088 天基综合信息系统全国重点实验室北京100094 中山大学电子与通信工程学院深圳518107

非完备、高动态有源干扰对抗作战环境下,现阶段针对库内多类型单一有源干扰样本所优化训练的静态模型,在面对库外类型多样、参数多变、组合方式多元的复合干扰时,模型无法快速更新且难以应对测试样本数非均衡问题。针对此问题,该文提出... 详细信息

非完备、高动态有源干扰对抗作战环境下,现阶段针对库内多类型单一有源干扰样本所优化训练的静态模型,在面对库外类型多样、参数多变、组合方式多元的复合干扰时,模型无法快速更新且难以应对测试样本数非均衡问题。针对此问题,该文提出一种基于零记忆增量学习的雷达复合有源干扰识别方法。首先,利用元学习训练模式对库内单一干扰进行原型学习,训练出高效的特征提取器,使其具备对库外复合干扰特征有效提取能力。进而,基于超维空间和余弦相似度计算,构建零记忆增量学习网络(ZMILN),将复合干扰原型向量映射到超维空间并存储,从而实现识别模型动态更新。此外,为解决样本数非均衡下复合干扰识别问题,设计直推式信息最大化(TIM)测试模块,通过在互信息损失函数中加入散度约束,对识别模型进一步强化训练以应对非均衡测试样本。实验结果表明,该文所提方法在非均衡测试条件下对4种单一干扰和7种复合干扰进行增量学习后,平均识别准确率达到了93.62%。该方法通过对库内多类型单一干扰知识充分提取,实现对多种组合条件下库外复合干扰的快速动态识别。

关键词：雷达有源干扰零记忆增量学习非均衡直推式信息最大化复合干扰识别

Efficient induction of a Her2-specific anti-tumor response by dendritic cells pulsed with a Hsp70L1–Her2_(341–456) fusion protein

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Cellular & Molecular Immunology 2011年第5期8卷 424-432页

作者： qiang fu Yanfeng Wu Fang Yan Ning Wang Wenying Wang Xuetao cao Yajie Wang Tao Wan Department of Oncology Changhai Hospital of ShanghaiShanghai 200433China National Key Laboratory of Medical Immunology and Institute of Immunology Second Military Medical UniversityShanghai 200433China

Heat shock proteins(HSPs)have been shown to interact with antigen-presenting cells(APCs),especially dendritic cells(DCs).HSPs act as potent adjuvants,inducing a Th1 response,as well as antigen-specific CD8^(+) cytotoxic T lymphocytes(CTL)via *** previous work has demonstrated that Hsp70-like protein 1(Hsp70L1),a new member of the Hsp70 subfamily,can act as a powerful Th1 adjuvant in a DC-based *** we report the efficient induction of tumor antigen-specific T cell immune response by DCs pulsed with recombinant fusion protein of Hsp70L1 and Her2_(341–456),the latter of which is a fragment of Her2/neu(Her2)containing E75(a HLA-A2 restricted CTL epitope).The fusion protein Hsp70L1–Her2_(341–456) promotes the maturation of DCs and activates them to produce cytokines,such as IL-12 and TNF-a,and chemokines,such as MIP-1a,MIP-1b and *** together,these results indicate that the adjuvant activity of Hsp70L1 is maintained in the fusion ***2-specific HLA-A2.1-restricted CD8^(+) CTLs can be generated efficiently either from the Peripheral blood lymphocytes(PBL)of healthy donors or from the splenocytes of immunized HLA-A2.1/K^(b) transgenic mice by in vitro stimulation or immunization with DCs pulsed with the Hsp70L1–Her2_(341–456) fusion *** results in more potent target cell killing in an antigen-specific and HLA-A2.1-restricted *** transfer of splenocytes from transgenic mice immunized with Hsp70L1–Her2_(341–456)-pulsed DCs can markedly inhibit tumor growth and prolong the survival of nude mice with Her2^(+)/HLA-A2.1^(+) human *** results suggest that Hsp70L1–Her2_(341–456)-pulsed DCs could be a new therapeutic vaccine for patients with Her2^(+) cancer.

关键词： CTL dendritic cell heat shock protein Her2/neu immunotherapy

Dielectric genetic tailoring strategy dominating MoSe_(2)@rGO assembled architecture with electromagnetic functions

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Journal of Advanced Ceramics 2024年第9期13卷 1461-1472页

作者： Wen-qiang cao Qi Zheng Lin Li Chuan-Bao cao Mao-Sheng cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics&Electron EngineeringHarbin Normal UniversityHarbin 150025China

The intensification of electromagnetic(EM)pollution and the development of military detection technology have increased the requirements for EM functional *** this study,a molybdenum diselenide@reduced graphene oxide(MoSe_(2)@rGO)-assembled architecture is constructed,where the MoSe_(2) nanosheets grow uniformly on the rGO *** regulating the contributions of conduction genes and polarization genes,adjustable EM functions of MoSe_(2)@rGO hybrids can be *** reflection loss(RL)of the sample can reach−68.7 dB at a thickness of 2.32 mm,and the maximum effective absorption bandwidth can reach 5.04 *** conduction genes dominate,the MoSe_(2)@rGO hybrids exhibit a 98.7%electromagnetic interference(EMI)shielding *** design of the EM energy conversion device and the results of the radar cross section(RCS)simulation demonstrate the practical application potential of the *** work provides inspiration for designing multifunctional EM materials.

关键词： MoSe_(2) graphene hybrids dielectric gene microwave absorption(MA) electromagnetic interference(EMI)shielding