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        Competitive Resource Sharing Based on Game Theory in Cooperative Relay Networks

        Guopeng Zhang,Li Cong,Liqiang Zhao,Hailin Zhang,Kun Yang 한국전자통신연구원 2009 ETRI Journal Vol.31 No.1

        This letter considers the problem of resource sharing among a relay and multiple user nodes in cooperative transmission networks. We formulate this problem as a sellers’ market competition and use a noncooperative game to jointly consider the benefits of the relay and the users. We also develop a distributed algorithm to search the Nash equilibrium, the solution of the game. The convergence of the proposed algorithm is analyzed. Simulation results demonstrate that the proposed game can stimulate cooperative diversity among the selfish user nodes and coordinate resource allocation among the user nodes effectively.

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        Research status and development trend of three-dimensional colloidal crystals

        Shuaibing Guo,Bing Yu,Fengyuan Gao,Song Wang,Youqing Shen,Hailin Cong 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.96 No.-

        The three-dimensional colloidal crystal materials have unique optical properties and spatial structuredue to their ordered arrangement and have great potential to prepare three-dimensionally orderedmicroporous (3DOM) materials. This review outlines various methods for preparing three-dimensionalcolloidal crystals (3DCCs). The preparation methods of commonly used colloidal particles are introducedin detail, and the effects of different parameters on the assembly of 3DCCs are discussed. On this basis,using the colloidal crystal template (CCT) method to prepare 3DOM materials. After that, the commonstacking methods and defects of 3DCCs were analyzed. The latter part of this review discusses the mainapplications of 3DCCs, namely optical materials, adsorption materials, sensors, porous electrodematerials, inverse colloidal crystal (ICC) scaffolds, and other popular applications in recent years.

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        A Hydrogel-based First-Aid Tissue Adhesive with Effective Hemostasis and Anti-bacteria for Trauma Emergency Management

        Dongjie Zhang,Li Mei,Yuanping Hao,Bingcheng Yi,Jilin Hu,Danyang Wang,Yaodong Zhao,Zhe Wang,Hailin Huang,Yongzhi Xu,Xuyang Deng,Cong Li,Xuewei Li,Qihui Zhou,Yun Lu 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00

        Background Clinical tissue adhesives remain some critical drawbacks for managing emergency injuries, such as inadequate adhesive strength and insufficient anti-infection ability. Herein, a novel, self-healing, and antibacterial carboxymethyl chitosan/polyaldehyde dextran (CMCS/PD) hydrogel is designed as the first-aid tissue adhesive for effective trauma emergency management. Methods We examined the gel-forming time, porosity, self-healing, antibacterial properties, cytotoxicity, adhesive strength, and hemocompatibility. Liver hemorrhage, tail severance, and skin wound infection models of rats are constructed in vivo, respectively. Results Results demonstrate that the CMCS/PD hydrogel has the rapid gel-forming (~ 5 s), good self-healing, and effective antibacterial abilities, and could adhere to tissue firmly (adhesive strength of ~ 10 kPa and burst pressure of 327.5 mmHg) with excellent hemocompatibility and cytocompatibility. This suggests the great prospect of CMCS/ PD hydrogel in acting as a first-aid tissue adhesive for trauma emergency management. The CMCS/PD hydrogel is observed to not only achieve rapid hemostasis for curing liver hemorrhage and tail severance in comparison to commercial hemostatic gel (Surgiflo ®) but also exhibit superior anti-infection for treating acute skin trauma compared with clinical disinfectant gel (Prontosan ®). Conclusions Overall, the CMCS/PD hydrogel offers a promising candidate for first-aid tissue adhesives to manage the trauma emergency. Because of the rapid gel-forming time, it could also be applied as a liquid first-aid bandage for mini-invasive surgical treatment.

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