期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到2,898篇文章
< 1 2 … 145 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Complex Function Approximation Based on Multi-ANN Approach 认领 引用
1
作者 Li Renhou & Gao Feng 《Journal of Systems Engineering and Electronics》 EI 1995年第2期22-31,共10页
This paper presents a multi-ANN approximation approach to approximate complex non-linear function. Comparing with single-ANN methods the proposed approach improves and increases the approximation and generalization ab... This paper presents a multi-ANN approximation approach to approximate complex non-linear function. Comparing with single-ANN methods the proposed approach improves and increases the approximation and generalization ability, and adaptability greatly in learning processes of networks. The simulation results have been shown that the method can be applied to the modeling and identification of complex dynamic control systems. 展开更多
关键词 Backpropagation algorithm Multilayer perception Complex function approximation Input space partitioning.
暂未订购 下载PDF
Adaptive function projective synchronization of uncertain complex dynamical networks with disturbance 认领 引用 被引量：2
2
作者 王树国 郑松 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第7期84-88,共5页
We investigate the problem of function projective synchronization （FPS） in drive–response dynamical networks with non-identical nodes. An adaptive controller is proposed for the FPS of complex dynamical networks wi... We investigate the problem of function projective synchronization （FPS） in drive–response dynamical networks with non-identical nodes. An adaptive controller is proposed for the FPS of complex dynamical networks with uncertain parameters and disturbance. Not only are the unknown parameters of the networks estimated by the adaptive laws obtained from the Lyapunov stability theory and Taylor expansions, but the unknown bounded disturbances are also simultaneously conquered by the proposed control. Finally, a numerical simulation is provided to illustrate the feasibility and effectiveness of the obtained result. 展开更多
关键词 complex networks function projective synchronization disturbance adaptive control
暂未订购 下载PDF
A full-plane strain complex variable analytical model considering three-dimensional principal stress rotation and its engineering applications 认领 引用 被引量：1
3
作者 Zijun Han Hongtao Liu +5 位作者 Linfeng Guo Wencong Cheng Jialu Liang Zihan Chen Xiaofei Guo Haozhu Wang 《International Journal of Coal Science & Technology》 SCIE EI CAS CSCD 2025年第6期131-148,共18页
To explore the influence of stress space rotation on roadway stability,this study establishes Cartesian and principal stress axes,obtains principal stress characteristic parameters and direction cosine matrix,and dete... To explore the influence of stress space rotation on roadway stability,this study establishes Cartesian and principal stress axes,obtains principal stress characteristic parameters and direction cosine matrix,and determines the conversion process between coordinate axes.By breaking through the traditional plane strain mechanics model,a full plane strain model of rectangular roadway considering the deflection effect of principal stress axis is established.The analytical solution of stress complex variation of any element around the roadway is derived,and the calculation method of plastic zone is given.The influence of stress deflection on the stress of roadway and the shape distribution of plastic zone is discussed and the control system of roadway under the action of principal stress deflection in spatial region is established.The research results show that:(1)the shear stress and normal stress formed in the remote of the roadway during the stress rotation are in the same order of magnitude,and the plastic quantitative calculation of the roadway cannot simply consider the normal stress.(2)Stress deflection causes the distribution of stress and plastic zone around the roadway to show‘asymmetric’failure characteristics,and the transient deflection of stress may cause the rapid expansion of the plastic zone of the roadway.(3)The distribution characteristics of plastic zone calculated by this study are compared with the deformation and failure feature and peep results of the return air roadway in Cuncaota Mine,and the comparison results are good.The supporting system and technology of roadway under the action of principal stress deflection in space area are put forward,and the field application effect is good. 展开更多
关键词 Complex variable function Dynamic stress migration Principal stress trajectory Roadway stability Plastic zone Asymmetric destruction
暂未订购 下载PDF
Function of Rural Settlement Complex Ecosystem in Mountain Area:A Case Study of Raosi Village of Zuogong County,Tibet 认领 引用 被引量：4
4
作者 LIU Shaoquan CHEN Guojie 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第4期945-950,共6页
Using energy analysis,the quantifying evaluation and study method on production, living and ecology functions and their sustainability of rural settlement ecosystem in mountain area is established with these energy in... Using energy analysis,the quantifying evaluation and study method on production, living and ecology functions and their sustainability of rural settlement ecosystem in mountain area is established with these energy index such as export of labor and products, export of water resource, internal energy reserve, energy consumption for human living, net energy of ecosystem function and net internal reserve. Taking rural settlement Raosi Village in Hengduan Mountains as a case study, and on the basis of the synthetic research into the ecological process of the complex ecosystem, the study shows that energy costs of production, human living and ecology functions are separately taking 1.36%, 13.59% and 85. 05% of the gross ecosystem functions, and the exertions of production and human living functions are close to a high-point state on the present using level of energy in the settlement. The study also shows that the most important function of a rural settlement in mountain area is its ecological rather productive function. 展开更多
关键词 mountain area, rural settlement complex ecosystem ecosystem function energy analysis
暂未订购 下载PDF
SOME PROPERTIES OF HOLOMORPHIC CLIFFORDIAN FUNCTIONS IN COMPLEX CLIFFORD ANALYSIS 认领 引用 被引量：2
5
作者 库敏 杜金元 王道顺 《Acta Mathematica Scientia》 SCIE 2010年第3期747-768,共22页
In this article, we mainly develop the foundation of a new function theory of several complex variables with values in a complex Clifford algebra defined on some subdomains of C^n＋l, so-called complex holomorphic Cli... In this article, we mainly develop the foundation of a new function theory of several complex variables with values in a complex Clifford algebra defined on some subdomains of C^n＋l, so-called complex holomorphic Cliffordian functions. We define the complex holomorphic Cliffordian functions, study polynomial and singular solutions of the equation D△^mf= 0, obtain the integral representation formula for the complex holo-morphic Cliffordian functions with values in a complex Clifford algebra defined on some submanifolds of C^n＋1, deduce the Taylor expansion and the Laurent expansion for them and prove an invariance under an action of Lie group for them. 展开更多
关键词 Complex Clifford algebra holomorphic Cliffordian functions Taylor expansion Laurent exnansion invariance
暂未订购 下载PDF
Syntheses,Spectral Characterization of the Nickel(Ⅱ) Complexes of Macrocyclic Dioxotetraamine and the Effect of the Functional Pendant Arms on their Properties 认领 引用 被引量：1
6
作者 ZHANG Zhi Hui BU Xian He +2 位作者 CAO Xi Chuan WANG Chuan Zhong CHEN Rong Ti 《Chinese Journal of Structural Chemistry》 SCIE CAS 1999年第1期16-23,共8页
A series of new macrocyclic dioxo 13 aneN 4 bearing various functional pendants, 2 methylfuran (LF), 2 methylthiophene (LT), 2 methylpyridine (LP), have been synthesized and characterized, where dioxo 13 aneN 4 is 1,4... A series of new macrocyclic dioxo 13 aneN 4 bearing various functional pendants, 2 methylfuran (LF), 2 methylthiophene (LT), 2 methylpyridine (LP), have been synthesized and characterized, where dioxo 13 aneN 4 is 1,4,7,10 tetraazacyclotridecane 11,13 dione. The solution behaviours of the nickel(Ⅱ) complexes have been studied by Uv vis, cyclic voltammetric techniques. The red shifts were observed for the absorption band maxima of the electronic spectra from NiLR 1 to NiLR 2 (R=2 methylfuran, 2 methylthiophene, 2 methylpyridine). The value of E 1/2 of the NiLR 2 is less than NiLR 1 and both of them are lower than that of the nickel(Ⅱ) complex of the unsubstituted ligand, and these reasons are discussed. 展开更多
关键词 macrocyclic dioxotetraamines nickel(Ⅱ) complex functional pendant cyclic voltammetric techniques
全文增补中
Hash function construction using weighted complex dynamical networks 认领 引用
7
作者 宋玉蓉 蒋国平 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第4期172-177,共6页
A novel scheme to construct a hash function based on a weighted complex dynamical network （WCDN） generated from an original message is proposed in this paper. First, the original message is divided into blocks. Then... A novel scheme to construct a hash function based on a weighted complex dynamical network （WCDN） generated from an original message is proposed in this paper. First, the original message is divided into blocks. Then, each block is divided into components, and the nodes and weighted edges are well defined from these components and their relations. Namely, the WCDN closely related to the original message is established. Furthermore, the node dynamics of the WCDN are chosen as a chaotic map. After chaotic iterations, quantization and exclusive-or operations, the fixed-length hash value is obtained. This scheme has the property that any tiny change in message can be diffused rapidly through the WCDN, leading to very different hash values. Analysis and simulation show that the scheme possesses good statistical properties, excellent confusion and diffusion, strong collision resistance and high efficiency. 展开更多
关键词 hash function weighted complex dynamical networks chaotic map cryptography
暂未订购 下载PDF
Recent progress in functionalized electrophosphorescent iridium(Ⅲ) complexes 认领 引用 被引量：2
8
作者 Fu-Quan Han Chun-Miao Han Hui Xu 《Chinese Chemical Letters》 SCIE CAS CSCD 2016年第8期1193-1200,共8页
Iridium（Ⅲ） complexes are one of the most important electrophosphorescent dyes with tunable emissions in the range of visible and near infrared lights,high photoluminescence yields and short lifetimes for high-effic... Iridium（Ⅲ） complexes are one of the most important electrophosphorescent dyes with tunable emissions in the range of visible and near infrared lights,high photoluminescence yields and short lifetimes for high-efficiency organic light-emitting diodes（OLED） with 100% exciton harvesting.This review summarizes the recent development of electroluminescent Ir^（3＋） complexes functionalized with host-featured carrier-transporting groups,with emphasis on correlations between functionalization,optoelectronic properties and device performance.According to the introducing approaches,the complexes were sorted with conjugated and aliphatic linkages,as well as the types of functional groups.The modification effect on physical properties and the state-of-the-art device performances were discussed. 展开更多
关键词 Electrophosphorescence Iridium（Ⅲ） complex Functionalization Optoelectronic optimization Carrier transporting
暂未订购 下载PDF
Lanthanide complexes-functionalized ordered mesoporous TiO_2:Multicolor emission(visible and near-infrared luminescence) based on visible-light sensitization 认领 引用 被引量：1
9
作者 Zhijuan Wang Song Dang +1 位作者 Shu'na Zhao Lining Sun 《Journal of Rare Earths》 SCIE EI CAS CSCD 2018年第9期939-945,共7页
Recently,much attention has been paid to the lanthanide luminescent materials based on the visiblelight sensitization for their potential applications in the fields of bio-imaging and optical devices.In this work,the ... Recently,much attention has been paid to the lanthanide luminescent materials based on the visiblelight sensitization for their potential applications in the fields of bio-imaging and optical devices.In this work,the lanthanide complexes have been covalently bonded to the ordered mesoporous titania（OMT） matrix,and the resulting titania-based hybrid ordered mesoporous materials（named as LnDBOMT,Ln = Eu,Sm,Yb,Nd） were characterized by using Fourier-transform infrared（FT-IR） spectroscopy,small-angle X-ray powder diffraction（SAXD）,N2 adsorption-desorption isotherms,transmission electron microscopy（TEM）,fluorescence spectroscopy,and thermogravimetric analysis.Generally,exciting with visible light is advantageous over UV excitation.Of importance here is that,under excitation with visible light,the LnDB-OMT all show characteristic visible（Eu3＋,Sm3＋） as well as nearinfrared（Sm3＋,Yb3＋,Nd3＋） luminescence of the corresponding Ln3＋ ions（multicolor emission covered from 500 to 1400 nm spectral region）,which is attributed to the energy transfer from the ligands to the Ln3＋ ions via an antenna effect. 展开更多
关键词 Visible-light excitation Visible luminescence Near-infrared luminescence Lanthanide complexes-functionalized Ordered mesoporous titania Rare earths
暂未订购 下载PDF
PREPARATION OF FUNCTIONAL MATERIALS BY BLENDING COPOLYESTERS WITH PVA AND METAL COMPLEX FORMATION OF POLYMER BLENDS 认领 引用 被引量：1
10
作者 汪水平 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 1998年第1期33-41,48,共9页
Copolyesters having secondary and tertiary amine salt groups in the main and side chains are prepared by chemoselective polymerization. These copolyesters are soluble in a 10% aqueous solution of poly(vinyl alcohol) (... Copolyesters having secondary and tertiary amine salt groups in the main and side chains are prepared by chemoselective polymerization. These copolyesters are soluble in a 10% aqueous solution of poly(vinyl alcohol) (PVA) at 90 degree C and act as plasticizer in the blend films cast from the solution. Only a glass transition temperature is observed for all these blends indicating the formation of compatible blends from these polyesters with PVA. These blends exhibit manifold characteristics such as ionic conductivity, complex formation with metal ions, absorption of moisture and color changes. The electric conductivity of the copolyesters and blends is in the range of 10** minus **6 Scm** minus **1. The blends with PVA forms complexes with Cu**2** plus and Co**2** plus . The coordination structure with two chelate rings is suggested for these polymer blend/metal complexes. (Author abstract) 10 Refs. 展开更多
关键词 reactive copolyester amine salt group functional polyester PVA blend polymer metal complex ion conductivity coordination structure
暂未订购 下载PDF
Resolution of Grandi’s Paradox as Extended to Complex Valued Functions 认领 引用 被引量：3
11
作者 Serdar Beji 《Advances in Pure Mathematics》 2020年第8期447-463,共17页
Grandi’s paradox, which was posed for a real function of the form 1/(1+ x), has been resolved and extended to complex valued functions. Resolution of this approximately three-hundred-year-old paradox is accomplished ... Grandi’s paradox, which was posed for a real function of the form 1/(1+ x), has been resolved and extended to complex valued functions. Resolution of this approximately three-hundred-year-old paradox is accomplished by the use of a consistent truncation approach that can be applied to all the series expansions of Grandi-type functions. Furthermore, a new technique for improving the convergence characteristics of power series with alternating signs is introduced. The technique works by successively averaging a series at different orders of truncation. A sound theoretical justification of the successive averaging method is demonstrated by two different series expansions of the function 1/(1+ ex ) . Grandi-type complex valued functions such as 1/(i + x) are expressed as consistently-truncated and convergence-improved forms and Fagnano’s formula is established from the series expansions of these functions. A Grandi-type general complex valued function is introduced and expanded to a consistently truncated and successively averaged series. Finally, an unorthodox application of the successive averaging method to polynomials is presented. 展开更多
关键词 Grandi’s Paradox Real and Complex Valued Functions Series Expansions
暂未订购 下载PDF
VECTOR-VALUED HOLOMORPHIC FUNCTIONS ON THE COMPLEX BALL AND THE ANALYTIC RADON-NIKODYM PROPERTY 认领 引用
12
作者 陈泽乾 欧阳才衡 《Acta Mathematica Scientia》 SCIE 2000年第2期278-288,共11页
The complex Banach spaces X with values in which every bounded holomorphic function in the unit hall B of C-d(d > 1) has boundary limits almost surely are exactly the spaces with the analytic Radon-Nikodym property... The complex Banach spaces X with values in which every bounded holomorphic function in the unit hall B of C-d(d > 1) has boundary limits almost surely are exactly the spaces with the analytic Radon-Nikodym property. The proof is based on inner Hardy martingales introduced here. The inner Hardy martingales are constructed in terms of inner functions in B and are reasonable discrete approximations for the image processes of the holomorphic Brownian motion under X-valued holomorphic functions in B. 展开更多
关键词 Complex Banach spaces the analytic Radon-Nikodym property inner functions inner Hardy martingales
暂未订购 下载PDF
Stability of One Kind Complex-Valued System by Lyapunov Function with Impulsive Control Field 认领 引用 被引量：1
13
作者 Wei Yang 《Journal of Applied Mathematics and Physics》 2024年第11期3889-3896,共8页
In this paper, we investigate one kind of complex-valued systems with an impulsive control field, where the complex-valued system is governed by the Schrödinger equation, which is used for quantum systems, etc. W... In this paper, we investigate one kind of complex-valued systems with an impulsive control field, where the complex-valued system is governed by the Schrödinger equation, which is used for quantum systems, etc. We study the convergence of the complex-valued system with impulsive control fields by one Lyapunov function based on the state distance and the invariant principle of impulsive systems. We propose new results for the mentioned complex-valued systems in the form of sufficient conditions and also present one numerical simulation to illustrate the effectiveness of the proposed control method. 展开更多
关键词 Complex-Valued System Lyapunov Function Stability
暂未订购 下载PDF
MAIN FUNCTIONS AND EVALUATION OF CUTI'S COMPLEX——Simulated Saturation Diving Chamber 认领 引用
14
作者 Zhang Longbao , Zhuang Qinhong Xue Liqun Associate Professor, Chinese Underwater Technology Institute , Shanghai Engineer, Chinese Underwater Technology Institute , Shanghai 《China Ocean Engineering》 SCIE EI 1990年第4期459-468,共10页
The 300 msw Simulated Saturation Diving Chamber Complex was designed and built by ourselves. It was completed at the end of 1985. A 300 msw trimixed saturation diving experiment was successfully conducted in the compl... The 300 msw Simulated Saturation Diving Chamber Complex was designed and built by ourselves. It was completed at the end of 1985. A 300 msw trimixed saturation diving experiment was successfully conducted in the complex by Chinese Underwater Technology Institute(CUTI) from May 22 to June 12 of 1987. During the experiment, 4 divers habitated in the complex for 20 days, and they performed 16 person-time excursion dives and 8 other tests. The result of the experiment indicates that the complex is well designed, suitably configurated, wholly integrated and steadily run, as well as of low leakage. The main functions of the complex have approached to those of the same kind in the world. The complex can be used as a basic facility for serving the nation's saturation diving technology, underwater operation, personnel training, etc. 展开更多
关键词 ATA Simulated Saturation Diving Chamber MAIN FUNCTIONS AND EVALUATION OF CUTI’S COMPLEX
暂未订购 下载PDF
SPACES OF ANALYTIC FUNCTIONS REPRESENTED BY DIRICHLET SERIES OF TWO COMPLEX VARIABLES 认领 引用 被引量：1
15
作者 Hazem Shaba Behnam and G. S. Srivastava 《Approximation Theory and Its Applications》 2002年第3期1-14,共14页
We consider the space X of all analytic functionsof two complex variables s1 and s2, equipping it with the natural locally convex topology and using the growth parameter, the order of f as defined recently by the auth... We consider the space X of all analytic functionsof two complex variables s1 and s2, equipping it with the natural locally convex topology and using the growth parameter, the order of f as defined recently by the authors. Under this topology X becomes a Frechet space Apart from finding the characterization of continuous linear functionals, linear transformation on X, we have obtained the necessary and sufficient conditions for a double sequence in X to be a proper bases. 展开更多
关键词 SPACES OF ANALYTIC FUNCTIONS REPRESENTED BY DIRICHLET SERIES OF TWO COMPLEX VARIABLES TEB Math
暂未订购 下载PDF
长期秸秆还田对土壤细菌群落功能性和复杂性的影响 认领 引用 被引量：1
16
作者 石兰英 李沐奚 +4 位作者 何朋 隋跃宇 郝翔翔 张志明 李禄军 《中国生态农业学报（中英文）》 CAS CSCD 北大核心 2026年第3期475-484,共10页
长期秸秆还田是提升土壤肥力、维系粮食高产稳产的重要农艺措施。本研究基于28年定位试验,设置不施肥(NF)、施用化肥(CF)、化肥+秸秆还田(CFS)共3个处理,研究长期秸秆还田对微生物群落功能性、潜在相互作用的影响及其对粮食产量的贡献... 长期秸秆还田是提升土壤肥力、维系粮食高产稳产的重要农艺措施。本研究基于28年定位试验,设置不施肥(NF)、施用化肥(CF)、化肥+秸秆还田(CFS)共3个处理,研究长期秸秆还田对微生物群落功能性、潜在相互作用的影响及其对粮食产量的贡献。结果表明:与NF处理相比,CF与CFS处理均显著提升了玉米产量,增幅达58.72%~217.52%,但两处理间产量无显著差异;在土壤质量改良方面,CF与CFS均提高了土壤有机碳及养分含量,且CFS处理的提升效应更突出,尤其是可有效缓解单施化肥导致的土壤酸化现象。功能注释结果显示,施肥显著改变微生物群落水平功能组成,其中CFS处理下微生物群落功能冗余度最高,化能异养、木质素降解及纤维素分解类群的相对丰度均高于其他处理。共现网络分析进一步揭示,长期秸秆还田重塑了微生物互作关系,CFS处理的网络复杂度最高,这种复杂性的提升主要源于变形菌门(Proteobacteria)和拟杆菌门(Bacteroidetes)类群的富集,以及养分循环相关功能模块的增强。随机森林模型与结构方程模型的联合分析表明,相较于微生物群落组成、功能基因组成及土壤理化属性,微生物群落网络复杂性是驱动作物产量变异的核心因子。综上所述,长期秸秆还田通过增加土壤养分库容、促进功能微生物类群发展及构建复杂的微生物互作网络,增强了农田生态系统的稳定性和韧性,是实现土壤健康提升与作物生产力可持续发展的重要途径。本研究揭示了微生物群落网络复杂度在维系作物稳产中的关键作用,为优化集约化农田土壤管理措施、保障粮食安全与农业环境可持续性提供了新的理论依据与机制框架。 展开更多
关键词 秸秆还田 土壤微生物 群落复杂性 微生物功能 玉米产量
暂未订购 下载PDF
Selection of a Minimal Complexity of a Transformation Functions of Pressure Sensors with a Maintained Given Measurement Accuracy 认领 引用
17
作者 Ekaterina Lapina Andrey Lapin 《Journal of Mechanics Engineering and Automation》 2015年第10期585-590,共6页
For series manufacture of pressure sensors, stage of technological tests is performed, related to a definition of the manufacturing accuracy of the sensors. Technological test plan of pressure sensors involves testing... For series manufacture of pressure sensors, stage of technological tests is performed, related to a definition of the manufacturing accuracy of the sensors. Technological test plan of pressure sensors involves testing the sensors on certain fixed temperature and pressure points available in the table. According to a test results, we determine transformation function mathematical model coefficients of sensors and accordance by the claimed accuracy class, of the manufactured sensors. The cost of pressure sensors mostly depends on the cost of this step and determined by the complexity of the used transformation function model. The analysis of a contemporary works associated with the choice of transformation functions for smart pressure sensors. A new proposed indicator of model complexity of a sensor transformation function. In details shown features of the complexity indicator use and given an example. In the article was set and resolved the task to reduce the cost of the tests for commercially available sensors, by reducing the number of temperature points, without compromising the accuracy of the sensor measurement ability. 展开更多
关键词 Pressure transducers （sensors） transformation function smart pressure sensors function of a minimal complexity pressure measurement accuracy.
暂未订购 下载PDF
沿顶掘进沿底综放机巷变形的尺寸效应及支护技术研究 认领 引用 被引量：1
18
作者 华心祝 杨勇 +3 位作者 杨朋 张九洲 张永松 李琛 《采矿与安全工程学报》 EI CAS CSCD 北大核心 2026年第2期263-279,共17页
顾北煤矿14321工作面初始设计为综采,巷道沿顶布置。为提高采煤效率和防止透水事故,综采500 m后转为综放开采。为适应综放开采要求,原沿顶布置的巷道需通过卧底增加巷道高度,由此产生高帮巷道。巷道尺寸效应导致围岩应力分布和位移发生... 顾北煤矿14321工作面初始设计为综采,巷道沿顶布置。为提高采煤效率和防止透水事故,综采500 m后转为综放开采。为适应综放开采要求,原沿顶布置的巷道需通过卧底增加巷道高度,由此产生高帮巷道。巷道尺寸效应导致围岩应力分布和位移发生变化,易引发围岩结构失稳和支护失效等问题。以14321工作面机巷为工程背景,基于复变函数理论分析巷道高宽比与侧压系数对围岩应力场分布的影响,结合危险函数理论探讨巷道边界不同方位及岩性的围岩破裂危险性,采用FLAC3D数值模拟研究巷道围岩位移演化和塑性区扩展规律。结果表明:巷道高宽比和侧压系数对围岩应力场分布具有显著影响,随着机巷高度增加,帮部围岩更易出现应力集中区;软弱煤帮与底角泥岩在高应力环境下存在较高的失稳破裂风险;高宽比增大加剧了围岩塑性区的扩展,卧底后帮部塑性区宽度增加31.8%,采动应力叠加后总扩展超过36.2%,其位移量达到原尺寸巷道的2倍以上。为此,提出以煤帮改性为基础的“锚注-喷浆”协同加固与卧底方案。现场监测结果表明,机巷注浆加固后围岩裂隙发育程度明显降低,位移量显著减小,稳定性得到有效控制。研究成果可为厚煤层沿顶掘进沿底综放回采巷道设计及支护提供参考。 展开更多
关键词 沿顶掘进 综放开采 回采巷道 尺寸效应 复变函数 支护技术
暂未订购 下载PDF
Application of Stability Criteria for Complex-Valued Impulsive System by Lyapunov Function 认领 引用
19
作者 Wei Yang 《International Journal of Modern Nonlinear Theory and Application》 2024年第4期45-52,共8页
Stability criteria for the complex-valued impulsive system are applied widely in many fields, such as quantum systems, which have been studied in recent decades. In this paper, I investigate the Lyapunov control of fi... Stability criteria for the complex-valued impulsive system are applied widely in many fields, such as quantum systems, which have been studied in recent decades. In this paper, I investigate the Lyapunov control of finite dimensional complex-valued systems with impulsive control fields, where the studied complex-valued systems are governed by the Schrödinger equation and can be used in quantum systems. By one Lyapunov function based on state error and the invariant principle of impulsive systems, I study the convergence of complex-valued systems with impulsive control fields and propose new results for the mentioned complex-valued systems in the form of sufficient conditions. A numerical simulation to validate the proposed control method is provided. 展开更多
关键词 Complex-Valued Systems Stability Lyapunov Function Impulsive Control Field
暂未订购 下载PDF
植物蛋白凝胶性能的强化策略与机理研究进展 认领 引用
20
作者 杨帅伶 李文亭 徐慧 《中国农业科学》 CAS CSCD 北大核心 2026年第14期3162-3184,共23页
在全球可持续发展与健康饮食需求的双重驱动下,植物蛋白作为动物蛋白替代资源的重要性日益突出。然而,植物蛋白天然凝胶性能的不足严重制约了在高端食品及非食品领域的高附加值应用。本文旨在系统评述近年来植物蛋白凝胶性能强化的主要... 在全球可持续发展与健康饮食需求的双重驱动下,植物蛋白作为动物蛋白替代资源的重要性日益突出。然而,植物蛋白天然凝胶性能的不足严重制约了在高端食品及非食品领域的高附加值应用。本文旨在系统评述近年来植物蛋白凝胶性能强化的主要策略与作用机理研究进展,为开发高性能植物蛋白制品及相关理论研究提供参考,以推动其在更广泛领域的创新应用,助力可持续食品与材料体系的发展。为此,本研究系统检索了Web of Science、ScienceDirect、PubMed及CNKI数据库(2015—2025年),以“植物蛋白凝胶”“物理改性”“酶法改性”“多糖复合”等为核心关键词进行组合检索,并通过文献追溯与引用追踪补充关键文献,经筛选后纳入高质量研究进行系统梳理与分析。文章围绕植物蛋白凝胶的形成基础、多维评价方法与性能强化策略展开分析。重点剖析了3大类强化策略:物理改性(如热、超声、高压处理),化学与生物酶法改性(酰化、糖基化、转谷氨酰胺酶交联),多组分复合策略(与多糖、多酚结合)。此外,进一步探讨了深共晶溶剂工程、双网络/互穿网络结构、4D打印智能凝胶及导电/自愈合凝胶等新兴设计策略。这些策略分别通过能量输入、精准共价修饰与分子间互作,显著提升了凝胶的强度、稳定性和功能多样性,标志着该领域正从“被动的性能改良”转向“主动的功能创造”。不过,从实验室走向产业化仍面临平衡感官与营养、克服原料差异与工艺放大瓶颈等核心挑战。未来仍需深化凝胶化动力学的原位解析与凝胶性能的理性设计研究,推动多种策略的智能化集成,挖掘非传统植物蛋白资源(如微藻蛋白、土豆蛋白、藜麦蛋白等)并建立其改性策略与应用场景的匹配关系。通过跨学科协同与“产学研”融合,植物蛋白凝胶有望在生物医学、柔性电子及循环经济材料等领域发挥关键作用,为可持续食品与材料体系提供重要支撑。 展开更多
关键词 植物蛋白 蛋白凝胶 凝胶强化 改性策略 作用机理 多糖复合 功能凝胶
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 145 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈