Material Foundation Research Articles

Driving mechanism for farmers to adopt agroecology for biodiversity conservation: Inspiration from tea management in a China National Park

Abstract Conflicts arising from human activities and biodiversity value affect the conservation efficacy of protected areas. Resolving these conflicts requires conservation‐compatible livelihoods, such as through agroecology. Here, we built a comprehensive social–psychological framework to explore and understand farmers' intentions to adopt agroecological approaches in tea management in Wuyishan National Park, China. We extended the theory of planned behaviour (TPB) by integrating household livelihood assets (LAs) as a material precondition for the social–psychological decision‐making process. We proposed geographical location (GL) and livelihood strategy (LS) as moderating factors for this agroecology intention. We collected 369 valid household samples through structured interviews. We then used partial least square‐structural equation (PLS‐SEM) modelling to explore the determinants that affect tea farmers' agroecological intentions. Livelihood assets were a material foundation influencing the intention to adopt agroecology and were also mediated by three psychological constructs to take effect. Perceived behavioural control explained the largest proportion of the variance for intention and exerted the most significant mediation effects. Subjective norm was another vital independent predictor and exerted a positive influence on both perceived behavioural control and attitude. The direct and mediating impacts of attitude on the intention were weaker but showed that farmers' ecological rationality outweighed value rationality. Livelihood strategies measured by operational scale and livelihood diversity were able to moderate farmers' psychology. Subjective norm had positively significant influence on perceived behavioural control and attitude, indicating that social support to farmers enhanced their feeling of control over adopting agroecology and that important referent groups as sources of information helped farmers' attitude formation. Perceived behavioural control positively and significantly influences farmers' attitudes as well. Synthesis and applications. Our findings provide evidence of the necessity to optimise rural farmers' livelihood assets to enhance their confidence and control over agroecology. Resolving the conservation‐development dilemma in protected areas through agroecology should aim at comprehensive support that respects bioculture and improves farmers' ability. We suggest knowledge co‐production of traditional wisdom and modern technologies, reducing management costs and risks, strengthening park‐people communication and diversifying incentives to farmers with different livelihood strategies.

Biocompatible and Biodegradable 3D Graphene/Collagen Fiber Hybrids for High-Performance Conductive Networks and Sensors.

Polymer-based flexible conductive materials are crucial for wearable electronics, electronic skin, and other smart materials. However, their development and commercial applications have been hampered by the lack of strain tolerance in the conductive network, poor bonding with polymers, discomfort during wear, and a lack of biocompatibility. This study utilized oil-tanned leather with a natural network structure, high toughness, and high tensile deformation recovery as a structural template. A graphene (Gr) conductive network was then constructed on the collagen network of the leather, with coordination cross-linking between Gr and collagen fibers through aluminum ions (Al3+). A new flexible conductive material (Al-GL) was then constructed. Molecular dynamics simulations and experimental validation revealed the existence of physical adsorption, hydrogen bonding adsorption, and ligand bonding between Al3+, Gr, and collagen fibers. Although we established that the binding sites between Al3+ and collagen fibers were primarily on carboxyl groups (-COOH), the mechanism of chemical bonding between Gr and collagen fibers remains unclear. The Al-GL composite exhibited a high shrinkage temperature (67.4 °C) and low electrical resistance (16.1 kΩ·sq-1), as well as good softness (9.33 mN), biocompatibility, biodegradability (<60 h), and air and moisture permeability. Furthermore, the incorporation of Al3+ resulted in a heightened Gr binding strength on Al-GL, and the resistance remained comparable following 1 h of water washing. The Al-GL sensor prepared by WPU encapsulation not only demonstrated highly sensitive responses to diverse motion signals of the human body but also retained a certain degree of response to external mechanical effects underwater. Additionally, the Al-GL-based triboelectric nanogenerator (Al-GL TENG) exhibited distinct response signals to different materials. The Al-GL prepared by the one-pot method proposed in this study offers a novel approach to combining functional nanofillers and substrate materials, providing a theoretical foundation for collagen fiber-based flexible conductive materials.

Molecular Mechanism of Pasteurized Akkermansia muciniphila in Alleviating Type 2 Diabetes Symptoms.

Type 2 diabetes (T2DM) significantly diminishes people's quality of life and imposes a substantial economic burden. This pathological progression is intimately linked with specific gut microbiota, such as Akkermansia muciniphila. Pasteurized A. muciniphila (P-AKK) has been defined as a novel food by the European Food Safety Authority and exhibited significant hypoglycemic activity. However, current research on the hypoglycemic activity of P-AKK is limited to the metabolic level, neglecting systematic exploration at the pathological level. Consequently, its material basis and mechanism of action for hypoglycemia remain unclear. Drawing upon this foundation, we utilized high-temperature killed A. muciniphila (H-K-AKK) with insignificant hypoglycemic activity as the control research object. Assessments were conducted at pathological levels to evaluate the hypoglycemic functions of both P-AKK and H-K-AKK separately. Our study unveiled for the first time that P-AKK ameliorated symptoms of T2DM by enhancing the generation of glucagon-Like Peptide 1 (GLP-1), with pasteurized A. muciniphila total proteins (PP) being a pivotal component responsible for this activity. Utilizing SDS-PAGE, proteomics, and molecular docking techniques, we deeply analyzed the material foundation of PP. We scientifically screened and identified a protein weighing 77.85 kDa, designated as P5. P5 enhanced GLP-1 synthesis and secretion by activating the G protein-coupled receptor (GPCR) signaling pathway, with free fatty acid receptor 2 (FFAR-2) being identified as the pivotal target protein for P5's physiological activity. These findings further promote the widespread application of P-AKK in the food industry, laying a solid theoretical foundation for its utilization as a beneficial food ingredient or functional component.

Polyvinyl alcohol (PVA)-based films: insights from crosslinking and plasticizer incorporation

The properties of polyvinyl alcohol (PVA) films are intricately influenced by factors such as polymer structure, fabrication method, the addition of plasticizers and the molecular weight of monomers. This research, investigates the implication of PVA films using a solution casting method for crosslinking with boric acid (H3BO4), glycerol (C3H8O3) and citric acid (C6H8O7). This approach is compared with pure PVA films, establishing a valuable benchmark. For the experiments, tensile strength tests, physicochemical property measurements, scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses were conducted to gain insights into the microstructure, surface characteristics and mineral composition of the films. This comprehensive approach aims to enhance our understanding of the intricate relationship between PVA, plasticizers and crosslinking agents, providing valuable insights for applications across diverse industries, including, construction and biomedical fields. The overarching objective of this research is to revolutionize the construction industry by developing polymer films that serve as the foundation for self-healing materials, fostering durability and innovation. The experiments revealed a significant influence of crosslinking agents on the properties of PVA films as measured.

Constructing liquid crystalline elastomer multi-fold gratings with side-on epoxy liquid crystalline monomers

ABSTRACT The fabrication of liquid crystalline elastomer (LCE) with reversible deformation is promising for development of intelligent materials and equipment. Preparing new liquid crystalline monomer (LCM) and developing novel LCE structures are crucial for the fabrication of advanced LCE. Herein, we design and synthesis a series of side-on nematic epoxy LCM, and then fabricate corresponding LCE with micropillar array via photoinitiated polymerisation of a magnetic induced oriented LCMs with soft lithography patterned structures. 1H NMR, 13C NMR, COSY, FTIR and MS spectra confirm the structures of the LCMs. DSC and POM results demonstrate that the LCMs are nematic liquid crystals. SEM, OM, and POM observations indicate the successful fabrication of LCE micropillars that exhibit reversible contraction and extension during heating and cooling cycles. In addition, the thermal induced reversible deformation of the LCE micropillars is closely related to the structure of the LCM. By using the same method, functional LCE with multi-fold gratings are prepared by using the multi-fold gratings master mask during the fabrication process, providing a material foundation for the construction of intelligent surfaces that can selectively diffract light under external thermal stimuli.

Three-dimensional hygro-thermo-mechanical bending analysis of anisotropic skewed parallelogram plates on a tri-parameter foundation using a wavelet method

In the paper, a brand-new three-dimensional hygro-thermo-mechanical bending model of anisotropic skewed parallelogram plates with extreme skew angle in large deformation supported by a tri-parameter nonlinear elastic foundation is proposed. By investigating the mutual coupled interaction of hygrothermal effects between in-plane distribution and thickness variation, nine kinds of spatially analytical hygrothermal fields in parallelogram domain are established by analyzing the Dirichlet, Neumann and Robin thermal boundary conditions of sinusoidally induced heat conduction at top and bottom surfaces. With coordinate transformation in oblique system considering the Von Kármán membrane strains, the highly coupled and strongly nonlinear governing partial differential equations have been derived. A wavelet solving procedure has been developed with the convergence process validated and precision of obtained solutions verified in good accordance with published results. Parametric studies have been carried out to investigate the large-deflection behavior of simply supported or clamped skew plates on Winkler–Pasternak foundation under combined mechanical and hygrothermal loads. The influence of skew angle, material orthotropy and foundation contact nonlinearity is examined, which reveals the geometrically nonlinear responses of plates are highly affected by large oblique angle, principle orientation of material orthotropy and foundation parameters.

Chinese Emotional Speech Audiometry Project (CESAP): Establishment and Validation of a New Material Set With Emotionally Neutral Disyllabic Words.

The Chinese Emotional Speech Audiometry Project (CESAP) aims to establish a new material set for Chinese speech audiometry tests, which can be used in both neutral and emotional prosody settings. As the first endeavor of CESAP, this study demonstrates the development of the material foundation and reports its validation in neutral prosody. In the development step, 40 phonetically balanced word lists consisting of 30 Chinese disyllabic words with neutral valence were first generated. In a following affective rating experiment, 35 word lists were qualified for validation based on the familiarity and valence ratings from 30 normal-hearing (NH) participants. For validation, performance-intensity functions of each word list were fitted with responses from 60 NH subjects under six presentation levels (-1, 3, 5, 7, 11, and 20 dB HL). The final material set was determined by the intelligibility scores at each decibel level and the mean slopes. First, 35 lists satisfied the criteria of phonetic balance, limited repetitions, high familiarity, and neutral valence and were selected for validation. Second, 15 lists were compiled in the final material set based on the pairwise differences in intelligibility scores and the fitted 20%-80% slopes. The established material set had high reliability and validity and was sensitive to detect intelligibility changes (50% slope: 6.20%/dB; 20%-80% slope: 5.45%/dB), with small covariance of variation for thresholds (15%), 50% slope (12%), and 20%-80% slope (12%). Our final material set of 15 word lists takes the initiative to control the emotional aspect of audiometry tests, which enriches available Mandarin speech recognition materials and warrants future assessments in emotional prosody among populations with hearing impairments. https://doi.org/10.23641/asha.25742814.

Influence of Subsoil and Building Material Properties on Mine-Induced Soil–Structure Interaction Effect

Soil–structure interaction (SSI) refers to the dynamic interaction between a structure and the surrounding soil on which it rests. The behavior of the soil can significantly affect the response of the building structure. In the context of civil engineering and structural analysis, SSI becomes particularly important when considering the response of structures to dynamic loads such as earthquakes or so-called paraseismic loads, e.g., mining tremors. Several factors contribute to SSI. Soil and building structure material properties, foundation type, and loading conditions are the most important parameters. The article concerns SSI in the case of mining rock bursts in Poland. The influence of changes in site material conditions and building material properties on the SSI phenomenon was investigated. A few variants of different properties of typical construction materials (brick, reinforced concrete, and cellular concrete) in the case of selected representative building structure were considered. The subsoil material properties from the wide range were also taken into account. Numerical three-dimensional finite element method (FEM) analysis was applied. The adopted models of the soil-structure system were verified by data from in situ experimental vibration measurements. A significant influence of the subgrade material and the building structure material on the SSI was demonstrated.

3D printed VEGF-CPO biomaterial scaffold to promote subcutaneous vascularization and survival of transplanted islets for the treatment of diabetes

Diabetes is a complex metabolic disease and islet transplantation is a promising approach for the treatment of diabetes. Unfortunately, the transplanted islets at the subcutaneous site are also affected by various adverse factors such as poor vascularization and hypoxia. In this study, we utilize biocompatible copolymers l-lactide and D,l-lactide to manufacture a biomaterial scaffold with a mesh-like structure via 3D printing technology, providing a material foundation for encapsulating pancreatic islet cells. The scaffold maintains the sustained release of vascular endothelial growth factor (VEGF) and a slow release of oxygen from calcium peroxide (CPO), thereby regulating the microenvironment for islet survival. This helps to improve insufficient subcutaneous vascularization and reduce islet death due to hypoxia post-transplantation. By pre-implanting VEGF-CPO scaffolds subcutaneously into diabetic rats, a sufficiently vascularized site is formed, thereby ensuring early survival of transplanted islets. In a word, the VEGF-CPO scaffold shows good biocompatibility both in vitro and in vivo, avoids the adverse effects on the implanted islets, and displays promising clinical transformation prospects.

Constitutional foundations of local self-government in Ukraine

The constitutional foundations of local self­government in Ukraine are norms-principles reflected in more than 20 articles of the Constitution of Ukraine. Norms establishing the legal, organizational, material and financial foundations of local self-government provide for the establishment of a democratic decentralized management system, based on independent territorial communities, local self-government bodies, which are entrusted with the decision of all issues of local importance. Real effective local self-government is possible only in the presence of certain conditions that have objectively developed in society, and which collectively form the basis of local self-government. The basics of local self­government create the foundation, that is, the foundation on which the entire system of local self-government is built. One of the fundamental foundations of local self-government is the participation of citizens in the social and political life of the state. The topicality of the topic is due primarily to the fact that at the current stage of democratic transformation of our country, local self­government is the basis of civil society. Local self-government is one of the most important institutions of a democratic state. Its development is a central scientific problem of municipal law and a "cornerstone” in municipal science for many decades, since its inception. The 1996 Constitution of Ukraine created the legal basis for the development of local self-government as a special type of public power. The article analyzes the constitutional principles that established the status of municipal power, their influence on further legislation and practice of local self­government. The constitutional principles of local self-government are analyzed. The approaches available in modern jurisprudence regarding the definition of the concept of "basics of local self­government” have been considered. Arguments are presented in favor of separating the organizational- legal, territorial, and material-financial bases of the activity of local self-government bodies.

Testis–Gut-Reproduction Axis: The Key to Reproductive Health

Reproductive health is an important issue for humanity. In the context of the increasing incidence rate of male infertility, it is essential to find the factors that affect male reproductive health. Gastrointestinal health is closely related to reproductive health. Gastrointestinal hormones (GIH) and gut microbiota (GM), as important material foundations for gastrointestinal function, can promote or inhibit testicular reproductive function, including spermatogenesis, sperm maturation, androgen synthesis, and even broader male diseases such as sexual function, prostate cancer, etc. On the contrary, the functional health of the testes is also of great significance for the stability of gastrointestinal function. This review mainly discusses the important regulatory effects of GIH and GM on male reproductive function.

AZ ÚJRAKEZDÉS KÖVETE: BENCSIK ISTVÁN (1953-1970) /DEBRECENI AGRÁRFELSŐOKTATÁS/ (1910-1998)

Agriculture played a significant role in consolidating the domestic political system after 1956. The rapid development of the Hungarian agricultural sector's performance contributed significantly to the country's relations with the economically developed regions of the world, with the so-called Hungarian model incorporating backyard farming into large-scale agriculture. However, this progress was achieved through an arduous road to development, resulting in internationally recognised vocational training standards in agriculture, particularly in higher agricultural education. Since the second half of the 1960s, there has been a noticeable development in the agricultural sector in Hungary. It has managed to preserve the creative traditions of its historical peasantry to a certain extent. The Debrecen agricultural higher education had a decisive role in the ambitious development of Hungarian agriculture. István Bencsik was an outstanding player in this process, actively contributing to the material and intellectual foundation of higher education in Debrecen. His work later impacted the agriculture of Tiszántúl and the wider region.

The Ultra Ganges Mission Activities and Impact on the Press in Pre-Modern China

Before the Opium War, Protestant missionaries to China took the Ultra Ganges Mission as a link, and carried out a series of literal missionary activities, and set up missionary stations and printing presses, church schools, and Chinese and foreign-language newspapers and magazines in the South Seas and in China's Canton and Macao, etc. The newspapers founded under the guidance and support of the Ultra Ganges Mission introduced the Western newspaper concepts and newspaper editing and printing techniques into China, cultivated the early Chinese newspaper group, and laid the material and human resource foundation for the Chinese to imitate foreign newspapers and run their own newspapers after the Opium War. By analyzing the historical facts about the establishment of modern Chinese and foreign newspapers and magazines by the Ultra Ganges Mission, this essay demonstrates how the foreign newspapers in China in the first half of the 19th century promoted and influenced the emergence and development of the modern newspaper industry in China.

A Spatial History of Seaports in South Asia

Seaports provide material foundations for globalization. In the long history of global mobile connectivity that now forms globalization, the Indian Ocean is the world's oldest arena of expansive long-distance sea travel. People have sailed monsoon winds among coastal environments connecting Europe, Africa, India, and China since prehistoric times. Indian Ocean ports grew in number, size, wealth, and permanence over the centuries and anchored the rise of seaborne empires connecting Asia, Africa, Europe, and the Americas. Modernity traveled among industrial port cities along with lower unit costs for shipping and a dramatically increasing scale of shipping in volume, value, distance, and speed. Capital investments in seaport infrastructure grew with the scale of mobility through ports connecting producers and consumers by land and sea in commodity chains that eventually embraced people around the world with increasingly intricate, expansive interdependence, and also with ever more entrenched spatial inequity. The result is the current global seaport space of interwoven connectivity strung along the coastlines of globalization on all the continents.

Production and reconstruction mechanism of consumption spaces in urban fringe areas under capital intervention: Evidence from Guangming town in Shenzhen

As the rapid urban expansion and the rise of consumer society, urban fringe areas have become an essential place for urban capital to intervene and achieve spatial regeneration, and it has triggered the consumerization and transformation of space. Taking Guangming Town in the urban fringe area of Shenzhen as an example, this paper reveals the process and dynamics of spatial consumerization transformation under the influence of capital intervention. It examines the intricate mechanisms of capital operation underlie the production of space, and endeavors to explore a novel model of rural spatial regeneration in China's urban fringe areas. This paper found that the production of space in Guangming Town under the capital intervention includes the material production and social relations production. With the reconstruction of spatial form and relationships, new local products, spatial configuration, social services and organizational relations are generated, forming a consumption space with heterogeneous landscape, market institutionalized management, commercialization and symbolization. The realization of the production of consumption space in urban fringe areas is based on the joint action of core elements such as land, capital and government, which provide the material foundation, operational power and coordination organization for space consumption. These promote capital to complete the triple cycle of “acquiring land - creating space scarcity - realizing space consumption”, and then realizing space reproduction and capital appreciation. In the Chinese context, the spatial transformation and production of urban fringe areas should not be regarded as a local practice of Western counter-urbanization or rural gentrification theory. Rather, it as a new spatial regeneration mode that harmonizes urban and rural production, lifestyles and development trajectories. This paper offers valuable practical insights and analytical perspectives for promoting integrated urban-rural development and fostering a new type of urbanization, thereby broadening the regional framework of rural development.

The effect of a pilot brief educational intervention on preferences regarding treatments for opioid use disorder

PurposeNegative perceptions around medications for opioid use disorder (MOUD) amongst the public could deter patients with opioid use disorder (OUD) from engaging with MOUD. Thus, we evaluated whether a brief intervention could improve preferences for MOUD in people who may or may not use opioids. MethodsWe employed a pre-post design to assess the effect of a brief educational intervention on preferences for methadone, buprenorphine, naltrexone, and non-medication treatment in an online sample of US adults stratified by race, who may or may not use opioids. Respondents ranked their preferences in OUD treatment before and after watching four one-minute educational videos about treatment options. Changes in treatment preferences were analyzed using Bhapkar’s test and post hoc McNemar’s tests. A binary logistic generalized estimating equation (GEE) assessed factors associated with preference between treatments. ResultsThe sample had 530 responses. 194 identified as White, 173 Black, 163 Latinx. Treatment preferences changed significantly towards MOUD (p<.001). This effect was driven by changes toward buprenorphine (OR=2.38; p<.001) and away from non-medication treatment (OR=0.20; p<.001). There was no significant difference in effect by race/ethnicity. People with lower opioid familiarity were significantly more likely to change their preferences towards MOUD following the intervention. ConclusionRespondent preferences for MOUD increased following the intervention suggesting that brief educational interventions can change treatment preferences towards MOUD. These findings offer insights into perceptions of OUD treatment in a racially stratified sample and serve as a foundation for future educational materials that target MOUD preferences in the general public.

Multi-omics and chemical profiling approaches to understand the material foundation and pharmacological mechanism of sophorae tonkinensis radix et rhizome-induced liver injury in mice

Ethnopharmacological relevanceSophorae tonkinensis Radix et Rhizoma (STR) is an extensively applied traditional Chinese medicine (TCM) in southwest China. However, its clinical application is relatively limited due to its hepatotoxicity effects. Aim of the studyTo understand the material foundation and liver injury mechanism of STR. Materials and methodsChemical compositions in STR and its prototypes in mice were profiled by ultra-performance liquid chromatography coupled quadrupole-time of flight mass spectrometry (UPLC-Q/TOF MS). STR-induced liver injury (SILI) was comprehensively evaluated by STR-treated mice mode. The histopathologic and biochemical analyses were performed to evaluate liver injury levels. Subsequently, network pharmacology and multi-omics were used to analyze the potential mechanism of SILI in vivo. And the target genes were further verified by Western blot. ResultsA total of 152 compounds were identified or tentatively characterized in STR, including 29 alkaloids, 21 organic acids, 75 flavonoids, 1 quinone, and 26 other types. Among them, 19 components were presented in STR-medicated serum. The histopathologic and biochemical analysis revealed that hepatic injury occurred after 4 weeks of intragastric administration of STR. Network pharmacology analysis revealed that IL6, TNF, STAT3, etc. were the main core targets, and the bile secretion might play a key role in SILI. The metabolic pathways such as taurine and hypotaurine metabolism, purine metabolism, and vitamin B6 metabolism were identified in the STR exposed groups. Among them, taurine, hypotaurine, hypoxanthine, pyridoxal, and 4-pyridoxate were selected based on their high impact value and potential biological function in the process of liver injury post STR treatment. ConclusionsThe mechanism and material foundation of SILI were revealed and profiled by a multi-omics strategy combined with network pharmacology and chemical profiling. Meanwhile, new insights were taken into understand the pathological mechanism of SILI.

Ultrasensitive CCL2 Detection in Urine for Diabetic Nephropathy Diagnosis Using a WS2-Based Plasmonic Biosensor.

The accurate diagnosis of diabetic nephropathy relies on achieving ultrasensitive biosensing for biomarker detection. However, existing biosensors face challenges such as poor sensitivity, complexity, time-consuming procedures, and high assay costs. To address these limitations, we report a WS2-based plasmonic biosensor for the ultrasensitive detection of biomarker candidates in clinical human urine samples associated with diabetic nephropathy. Leveraging plasmonic-based electrochemical impedance microscopy (P-EIM) imaging, we observed a remarkable charge sensitivity in monolayer WS2 single crystals. Our biosensor exhibits an exceptionally low detection limit (0.201 ag/mL) and remarkable selectivity in detecting CC chemokine ligand 2 (CCL2) protein biomarkers, outperforming conventional techniques such as ELISA. This work represents a breakthrough in traditional protein sensors, providing a direction and materials foundation for developing ultrasensitive sensors tailored to clinical applications for biomarker sensing.

Fit Hubster: Comprehensive Fitness Hub Web App for Easy Navigation

Fit Hubster, a cutting-edge fitness application developed on a foundation of HTML, CSS, JavaScript, React, and Material UI, stands out for its technical robustness and scalability. Operationally, Fit Hubster ensures easy navigation and low maintenance, contributing to a seamless user experience. The app's potential revenue streams further bolster its financial viability, making it a promising venture in the competitive fitness technology landscape. Legal compliance mechanisms are in place to safeguard user privacy and uphold content licensing standards, demonstrating a commitment to ethical practices. Socially, Fit Hubster fosters user engagement and feedback, creating a vibrant community around fitness enthusiasts. The app's emphasis on interactive features enhances its appeal and feasibility as a comprehensive fitness solution. In conclusion, Fit Hubster emerges as a robust, scalable, and socially engaging fitness application with the potential to meet the demands of a diverse user base while ensuring operational efficiency and legal integrity

Microstructure, hardness, and tribological properties of CoCrFeNiX (X = Mo, Ti, W) high entropy alloy coating by red-blue composite laser cladding on copper alloy

In this study, the problem of high reflectivity of copper alloy surface to traditional infrared laser beam was overcome by red-blue composite laser cladding technology. The problem of cracks and other defects caused by the large difference in thermal expansion coefficient between copper substrate and high entropy alloy coating was overcome by electroplating Ni intermediate layer on the surface of copper alloy. A high-entropy alloy coating with tight bonding and no obvious defects was successfully prepared on the surface of copper alloy. The phase composition, microstructure evolution, hardness and tribological properties of high-entropy alloy coatings after adding different elements were studied. The experimental results show that all the CoCrFeNi coatings are FCC phase. After the addition of Mo, Ti and W elements, σ phase rich in Mo and Cr, TiCo2-type Laves phase and Fe7W6-type μ phase appeared in the high entropy alloy coating, respectively. The average microhardness of CoCrFeNiX (X = Mo, Ti, W) high entropy alloy coatings reached 730 HV0.2, 1090 HV0.2 and 378 HV0.2, respectively. The wear rates of CoCrFeNiMo, CoCrFeNiTi and CoCrFeNiW high-entropy alloy coatings were 47.17 %, 90.56 % and 22.64 % lower than those of CoCrFeNi coating, respectively. The wear scars were analyzed by SEM and EDS, and the friction and wear behavior mechanism of CoCrFeNiX (X = Mo, Ti, W) high-entropy alloy coating was investigated. It is mainly composed of abrasive wear, adhesive wear and oxidation wear. The research results provide practical guidance for the preparation of high-entropy alloy coatings on copper surface, and lay a theoretical foundation for laser cladding such high-entropy alloy materials and substrate materials.