侯鸿浩｜南方医科大学｜学者主页

2026

Development of nanoparticles loaded with D-mannose for topical treatment to alleviate skin aging via rescuing SIRT1 from degradation

Jialiang Luo, Weijie Shao, Shuai Liu, Zhicheng Liang, Xiaojing Dong, Shidian Xu, Honghao Hou, Daming Zuo, Jialiang Luo

Materials Today Bio

2026

Corrigendum to “Versatile poly (deep eutectic solvents) electroactive chitosan eutectogel for infected wound healing and monitoring administration” [Carbohydrate Polymers 352 (2025) 123192]

Shuai Liu, Jiamian Zhan, Zhenyu Liu, Xiaoying Tan, Jianxing Huang, Chunyi Pu, Rurong Lin, Yu Chen, Qi Luo, Xiaozhong Qiu, Honghao Hou

Carbohydrate Polymers

DOI

2026

Full‐Range Strain‐Insensitive Ionic Conduction Enabled by Orthogonal Dynamic‐Bond‐Mediated Microphase Decoupling in Elastomer Fibers

Liu Y, Jingming Wang, Weizhen Li, Zhenlin Jiang, Piming Ma, Honghao Hou, Shiqiang Song

Advanced Functional Materials

DOI

2026

A salidroside-crosslinked multi-responsive injectable hydrogel to alleviate tissue stress microenvironment and promote muscle injury repair

Zhenyu Liu, Shuai Liu, Xia Cheng, Yue Ma, Xiaoying Tan, Chunyi Pu, Chengzhong Xu, Xiaozhong Qiu, Xiaomin Sun, Honghao Hou, Qi Luo

Advanced Composites and Hybrid Materials

DOI

2026

Carrier-free self-assembly of choline chloride-ammonium glycyrrhizinate hydrogel for myocardial infarction microenvironment regulation

Yi Hu, Wenhui Yang, Jiamian Zhan, Yue Ma, Pengqi Wang, Chunyi Pu, Linfang Zhong, Xiaozhong Qiu, Honghao Hou

Nano Today

DOI

2026

Pre-priming cell sheet therapy enabled by dynamic wrinkled electroactive substrate for muscle reconstruction

Chunyi Pu, Siyu Liang, Yue Ma, Xingyun Fan, Jin Li, Jingyu Guan, Rurong Lin, Shuai Liu, Jie Zhang, Dong Yang, Xuesong Jiang, Xiaozhong Qiu, Honghao Hou

Bioactive Materials

DOI

2026

Extracellular vesicles for heart repair: origins, functions, bioengineering strategies, and therapeutic potential

Liufang Wu, Si Shen, Changning Qian, Nuanyang Wu, Xiaozhong Qiu, Honghao Hou

Journal of Materials Chemistry B

DOI

2026

Progress on rotator cuff tendon-to-bone interface tissue regeneration and repair

Liufang Wu, Changning Qian, Nuanyang Wu, Yinan Shen, Chengzhong Xu, Qingkun Wang, Honghao Hou

Biomaterials Science

DOI

2025

肌组织修复与再生材料 = Biomaterials for muscle tissue repair and regeneration

侯鸿浩

《哈尔滨工业大学出版社》

2025

g-C3N4/ZnO nano-reinforced polysulfonate-PVA dual-network hydrogels for enhanced antibacterial ability and breathable wound healing

Zhenyu Liu, Hizbullah Malik, Muhammad Bilal Khan Niazi, Umer Shahzad Malik, Zaib Jahan, Muhammad Salman Haider, Suhaib Umer Ilyas, Rayed S. Alshareef, Honghao Hou, Dong Yang

Chinese Chemical Letters

DOI

2025

Mechano-matching hydrogel patch promotes myocardial infarction repair via YAP-Bcl-2 pathway activation

Yanyan Zhao, Jie Shen, Rurong Lin, Jianxing Huang, Xiaoming Zou, Honghao Hou, Xiaozhong Qiu

Materials Today Bio

DOI

2025

Ultra‐High Conductivity Enhancement of Robust All‐Solid‐State Ion Elastomers via Strain‐Induced Ion Channel Alignment and Temperature‐Activated Ion‐Gated Release

Xu Yang, Haowen Yang, Shiqiang Song, Weizhen Li, Piming Ma, Yong Zhang, Honghao Hou

Advanced Materials

DOI

2025

High Biocompatible Janus Adhesive Bioelectronics Patch Enables Reliable and Stable Pathological Cardiac Electrophysiological Mapping

Jie Zhang, Si Qin Shen, Nian Zhang, Pengqi Wang, Shuai Liu, Yanni Han, Mengli Sui, Chunyi Pu, Rurong Lin, Feng Xu, Shiqi Guo, Haibing Xu, Dong Mei Yang, Honghao Hou

Advanced Functional Materials

DOI

2025

Orchestrated Adhesive Anisotropic/Anti‐Adhesive Isotropic Janus Conductive Patch Reverses Ventricular Remodeling via Synchronized Electrophysiological Reconstitution and Mitochondrial‐Targeted Salvage

Shuhui Chen, Xin Zhang, Guangbing Luo, Qiuyuan Zhao, Jie Shen, Jiamian Zhan, Qing Xie, Shaofeng Hua, Honghao Hou, Yutong He, Xiaozhong Qiu

Advanced Functional Materials

DOI

2025

Salidroside-loaded metal-organic frameworks hydrogel to improve cardiac allograft function

Pengyu Zhou, Jianqiang Ji, Zhong Zhang, Xiu Liu, Xuan Pan, Chuanjie Niu, Jun Wan, Chaofan Wen, Ruiling Wang, Zheng Shaoyi, Shuai Liu, Honghao Hou, Jun Lu

The Journal of Heart and Lung Transplantation

DOI

2025

Synthesis and assembly strategy of electroactive biomaterials and systems for soft tissue engineering applications

Dong Mei Yang, Yi Hu, Shuai Liu, Wenhui Yang, Xi Ren, Yanbing Li, Feng Xu, Min Gong, Yunlong Zhao, Xiaozhong Qiu, Honghao Hou

Chem

DOI

2025

Bionic striated muscle tissue microstructures synchronous promote in vivo electromechanical coupling and muscle repair

Qixiang Duan, Chunyi Pu, Zhenyu Liu, Si Qin Shen, Shuai Liu, Rurong Lin, Jie Zhang, Yongqin Wang, Yunsong Liang, Weihong Jiang, Rongze Jiang, Jingyu Guan, Xintong You, Xiaozhong Qiu, Honghao Hou

Chemical Engineering Journal

DOI

2025

Eutectogels: Recent Advances and Emerging Biological Applications

Yi Hu, Wenhui Yang, Jiamian Zhan, Chunyi Pu, Linfang Zhong, Honghao Hou

Advanced Functional Materials

DOI

2025

Biomimetic Microstructured Scaffold with Release of Re‐Modified Teriparatide for Osteoporotic Tendon‐to‐Bone Regeneration via Balancing Bone Homeostasis

Chengzhong Xu, Sijie Qiu, Zhigen Yuan, Chongyin Qiu, Wenyu Xu, Jialiang Guo, Gen Wen, Shuai Liu, Wenjuan Yan, Hai‐Bing Xu, Honghao Hou, Dehong Yang

Advanced Science

DOI

2025

Multi-functional covalent polymer eutectogels based on deep eutectic solvents potential for sealable adhesive

Yi Hu, Jiamian Zhan, Chunyi Pu, Wenhui Yang, Linfang Zhong, Ziwen Xu, Yiyin Pan, Honghao Hou

Chemical Engineering Journal

DOI

2025

Implant coating for promoted postoperative bone regeneration via cascade Reaction-Mediated microenvironment reprogramming

Bing Yan, Rurong Lin, Chongyin Qiu, Wei Yan Sun, Xiaogang Ma, Jianxing Huang, Shuai Liu, Shuai Liu, Haifeng Liang, Chunyi Pu, Chunyi Pu, Xiaojing Liu, Bo Yu, Honghao Hou

Chemical Engineering Journal

DOI

2025

Biomimetic wrinkled prebiotic microspheres with enhanced intestinal retention for hyperphosphatemia and vascular calcification

Bianxiang Hu, Yongqin Wang, Lei Yu, Lisha Cao, Shuai Liu, Lin Zhong, Guobao Wang, Xiaozhong Qiu, Honghao Hou

Science Advances

DOI

2024

Versatile poly (deep eutectic solvents) electroactive chitosan eutectogel for infected wound healing and monitoring administration

Shuai Liu, Jiamian Zhan, Zhenyu Liu, Xiaoying Tan, Jianxing Huang, Chunyi Pu, Rurong Lin, Yu Chen, Qi Luo, Xiaozhong Qiu, Honghao Hou

Carbohydrate Polymers

DOI

2024

The Epileptiogenic Modified Therapy: Regulating the Dynamic of Microglia via ROS‐Responsive Cascade Nano‐Formulation

Jiaxin Li, Shuai Liu, Chenghan Chen, Jiahong Deng, Zibo Du, Simin Yang, Hongying Deng, Zhixia Zhang, Ying Huang, Jingwen Fu, Wangming Zhang, Wai Sang Poon, Honghao Hou, Jun Wang

Advanced Healthcare Materials

DOI

2024

Biomimetic Versatile Anisotropic, Electroactive Cellulose Hydrogel Scaffolds Tailored from Fern Stem Serving as Nerve Conduit and Cardiac Patch

Qinghui Liang, Shuhui Chen, Shaofeng Hua, Weihong Jiang, Jiamian Zhan, Chunyi Pu, Rurong Lin, Yutong He, Honghao Hou, Xiaozhong Qiu

Advanced Science

DOI

2024

Advances in Osteoblast and Mitochondrial Dynamics and Their Transfer in Osteoporosis

Jiaxuan Liu, Xuequan Zhang, Honghao Hou, Jun Ouyang, Jingxing Dai

Journal of Cellular and Molecular Medicine

DOI

2024

Bioactive matters based on natural product for cardiovascular diseases

Linfang Zhong, Xiaoying Tan, Wenhui Yang, Peishan Li, Lianbao Ye, Qi Luo, Honghao Hou

Smart Materials in Medicine

DOI

2024

Single dose of intravenous miR199a-5p delivery targeting ischemic heart for long-term repair of myocardial infarction

Yu Chen, Shuai Liu, Yunsong Liang, Yutong He, Qian Li, Jiamian Zhan, Honghao Hou, Xiaozhong Qiu

Nature Communications

DOI

2024

A novel microglia-targeting strategy based on nanoparticle-mediated delivery of miR-26a-5p for long-lasting analgesia in chronic pain

Yitian Lu, Shuai Liu, Peng Wang, Xiangna Guo, Zaisheng Qin, Honghao Hou, Tao Tao

Journal of Nanobiotechnology

DOI

2024

Cardiac organ chip: advances in construction and application.

Jun Li, Honghao Hou, Qian Li, Junjie Liu, Yunlong Zhao, Chaoran Zhao, Zhentao Li, Leyu Wang, Xiaozhong Qiu

PubMed

DOI

2023

Ammonium Persulfate-Loaded Carboxylic Gelatin–Methacrylate Nanoparticles Promote Cardiac Repair by Activating Epicardial Epithelial–Mesenchymal Transition via Autophagy and the mTOR Pathway

Chen Song, Fanxuan Kong, Huijia Nong, Liu Cai, Ye Tian, Honghao Hou, Leyu Wang, Xiaozhong Qiu

ACS Nano

DOI

2023

Engineering mechanical nonreciprocity in homogeneous materials: From biomimetic to bioapplications

Jiamian Zhan, Xiaozhong Qiu, Honghao Hou

Matter

DOI

2023

A Core–Shell Nanoreinforced Ion‐Conductive Implantable Hydrogel Bioelectronic Patch with High Sensitivity and Bioactivity for Real‐Time Synchronous Heart Monitoring and Repairing

Si Qin Shen, Jie Zhang, Yanni Han, Chunyi Pu, Qixiang Duan, Jianxing Huang, Bing Yan, Xintong You, Rurong Lin, Xiaoxi Shen, Xiaozhong Qiu, Honghao Hou

Advanced Healthcare Materials

DOI

2023

3D hypoxia-mimicking and anti-synechia hydrogel enabling promoted neovascularization for renal injury repair and regeneration

Yuehang Zhang, Lei Yu, Renjie Qiu, Lisha Cao, Genlan Ye, Rurong Lin, Yongqin Wang, Guobao Wang, Bianxiang Hu, Honghao Hou

Materials Today Bio

DOI

2023

Cardiac Regeneration

Honghao Hou, Shuai Liu, Qinrui Jiang, Meiqi Liu, Xiaozhong Qiu

ACS symposium series

DOI

2023

Microenvironment responsive hypoxia-mimetic DFO composite hydrogel for on-demand neovascularization to promote tendon-to-bone healing

Chengzhong Xu, Tao Lin, Xiaoliang Zhao, Yanchang Gan, Jianxing Huang, Jie Zhang, Haibin Zheng, Chunyi Pu, Rurong Lin, Bing Yan, Guoju Hu, Qiaolan Liu, Bo Yu, Songjian Li, Honghao Hou

Composites Part B Engineering

DOI

2023

Biomimetic natural biomaterials for tissue engineering and regenerative medicine: new biosynthesis methods, recent advances, and emerging applications

Shuai Liu, Jiangming Yu, Yanchang Gan, Xiaozhong Qiu, Zhe-Chen Gao, Huan Wang, Shixuan Chen, Yuan Xiong, Guohui Liu, Sien Lin, Alec D. McCarthy, Johnson V. John, Dai‐Xu Wei, Honghao Hou

Military Medical Research

DOI

2023

Microglia-mediated inflammatory destruction of neuro-cardiovascular dysfunction after stroke

Jiahong Deng, Chenghan Chen, Shuaishuai Xue, Daoqing Su, Wai Sang Poon, Honghao Hou, Jun Wang

Frontiers in Cellular Neuroscience

DOI

2023

Cardiac-Adaptive Conductive Hydrogel Patch Enabling Construction of Mechanical–Electrical Anisotropic Microenvironment for Heart Repair

Xiaoping Song, Jifeng Zhang, Jifeng Zhang, Si Qin Shen, Dan Liu, Jie Zhang, Jie Zhang, Wenming Yin, Genlan Ye, Leyu Wang, Liu Cai, Honghao Hou, Xiaozhong Qiu

Research

DOI

2023

An injectable elastic hydrogel crosslinked with curcumin–gelatin nanoparticles as a multifunctional dressing for the rapid repair of bacterially infected wounds

Xiaohui Cai, Yutong He, Liu Cai, Jiamian Zhan, Qian Li, Saiqiong Zhong, Honghao Hou, Wenya Wang, Xiaozhong Qiu

Biomaterials Science

DOI

2023

Transdermal drug delivery via microneedles for musculoskeletal systems

Haibin Zheng, Xuankun Xie, Haocong Ling, Xintong You, Siyu Liang, Rurong Lin, Renjie Qiu, Honghao Hou

Journal of Materials Chemistry B

DOI

2022

Vanillin cross-linked hydrogel membranes interfacial reinforced by carbon nitride nanosheets for enhanced antibacterial activity and mechanical properties

Umer Shahzad Malik, Qixiang Duan, Muhammad Bilal Khan Niazi, Zaib Jahan, Usman Liaqat, Farooq Sher, Yanchang Gan, Honghao Hou

Chinese Chemical Letters

DOI

2022

Highly Stretchable and Biocompatible Wrinkled Nanoclay‐Composite Hydrogel With Enhanced Sensing Capability for Precise Detection of Myocardial Infarction

Jie Zhang, Si Qin Shen, Rurong Lin, Jianxing Huang, Chunyi Pu, Pinger Chen, Qixiang Duan, Xintong You, Chengzhong Xu, Bing Yan, Xinrui Gao, Ziqi Shen, Liu Cai, Xiaozhong Qiu, Honghao Hou

Advanced Materials

DOI

2022

A smart adhesive Janus hydrogel for non-invasive cardiac repair and tissue adhesion prevention

Yutong He, Qian Li, Pinger Chen, Qixiang Duan, Jiamian Zhan, Xiaohui Cai, Leyu Wang, Honghao Hou, Xiaozhong Qiu

Nature Communications

DOI

2022

Smart surface-based cell sheet engineering for regenerative medicine

Chunyi Pu, Rurong Lin, Siyu Liang, Xiaozhong Qiu, Honghao Hou

Trends in Chemistry

DOI

2022

A Vascularized Conductive Elastic Patch for the Repair of Infarcted Myocardium through Functional Vascular Anastomoses and Electrical Integration

Weirong Xiong, Xiaoxian Wang, Haien Guan, Fanxuan Kong, Zhaoming Xiao, Yihan Jing, Liu Cai, Honghao Hou, Xiaozhong Qiu, Leyu Wang

Advanced Functional Materials

DOI

2021

A porous hydrogel scaffold mimicking the extracellular matrix with swim bladder derived collagen for renal tissue regeneration

Heng Wu, Rui Zhang, Bianxiang Hu, Yutong He, Yuehang Zhang, Liu Cai, Leyu Wang, Guobao Wang, Honghao Hou, Xiaozhong Qiu

Chinese Chemical Letters

DOI

2021

A tunable self-healing ionic hydrogel with microscopic homogeneous conductivity as a cardiac patch for myocardial infarction repair

Xiaoping Song, Xiaorui Wang, Jie Zhang, Si Qin Shen, Wenming Yin, Genlan Ye, Leyu Wang, Honghao Hou, Xiaozhong Qiu

Biomaterials

DOI

2021

A self-healable, stretchable, tear-resistant and sticky elastomer enabled by a facile polymer blends strategy

Shiqiang Song, Honghao Hou, Jincheng Wang, Pinhua Rao, Yong Zhang

Journal of Materials Chemistry A

DOI

2020

From waste of marine culture to natural patch in cardiac tissue engineering

Yutong He, Honghao Hou, Shuqi Wang, Rurong Lin, Leyu Wang, Lei Yu, Xiaozhong Qiu

Bioactive Materials

DOI

2020

A SERS substrate with remarkable reproducibility: Adsorbing and detecting both hydrophobic and hydrophilic molecules using rGO/PEI/PAA/CD-AgNP nanocomposites

Junbin Fang, Junjia Zhu, Meng Fu, Yu Gu, Guanghuan Li, Honghao Hou, Zihua Lin, Xing-Yuan Chen, Xiangming Li

Applied Surface Science

DOI

精选作品

期刊论文

Development of nanoparticles loaded with D-mannose for topical treatment to alleviate skin aging via rescuing SIRT1 from degradation

Corrigendum to “Versatile poly (deep eutectic solvents) electroactive chitosan eutectogel for infected wound healing and monitoring administration” [Carbohydrate Polymers 352 (2025) 123192]

Full‐Range Strain‐Insensitive Ionic Conduction Enabled by Orthogonal Dynamic‐Bond‐Mediated Microphase Decoupling in Elastomer Fibers

A salidroside-crosslinked multi-responsive injectable hydrogel to alleviate tissue stress microenvironment and promote muscle injury repair

Carrier-free self-assembly of choline chloride-ammonium glycyrrhizinate hydrogel for myocardial infarction microenvironment regulation

Pre-priming cell sheet therapy enabled by dynamic wrinkled electroactive substrate for muscle reconstruction

Extracellular vesicles for heart repair: origins, functions, bioengineering strategies, and therapeutic potential

Progress on rotator cuff tendon-to-bone interface tissue regeneration and repair

肌组织修复与再生材料 = Biomaterials for muscle tissue repair and regeneration

g-C3N4/ZnO nano-reinforced polysulfonate-PVA dual-network hydrogels for enhanced antibacterial ability and breathable wound healing

Mechano-matching hydrogel patch promotes myocardial infarction repair via YAP-Bcl-2 pathway activation

Ultra‐High Conductivity Enhancement of Robust All‐Solid‐State Ion Elastomers via Strain‐Induced Ion Channel Alignment and Temperature‐Activated Ion‐Gated Release

High Biocompatible Janus Adhesive Bioelectronics Patch Enables Reliable and Stable Pathological Cardiac Electrophysiological Mapping

Orchestrated Adhesive Anisotropic/Anti‐Adhesive Isotropic Janus Conductive Patch Reverses Ventricular Remodeling via Synchronized Electrophysiological Reconstitution and Mitochondrial‐Targeted Salvage

Salidroside-loaded metal-organic frameworks hydrogel to improve cardiac allograft function

Synthesis and assembly strategy of electroactive biomaterials and systems for soft tissue engineering applications

Bionic striated muscle tissue microstructures synchronous promote in vivo electromechanical coupling and muscle repair

Eutectogels: Recent Advances and Emerging Biological Applications

Biomimetic Microstructured Scaffold with Release of Re‐Modified Teriparatide for Osteoporotic Tendon‐to‐Bone Regeneration via Balancing Bone Homeostasis

Multi-functional covalent polymer eutectogels based on deep eutectic solvents potential for sealable adhesive

Implant coating for promoted postoperative bone regeneration via cascade Reaction-Mediated microenvironment reprogramming

Biomimetic wrinkled prebiotic microspheres with enhanced intestinal retention for hyperphosphatemia and vascular calcification

Versatile poly (deep eutectic solvents) electroactive chitosan eutectogel for infected wound healing and monitoring administration

The Epileptiogenic Modified Therapy: Regulating the Dynamic of Microglia via ROS‐Responsive Cascade Nano‐Formulation

Biomimetic Versatile Anisotropic, Electroactive Cellulose Hydrogel Scaffolds Tailored from Fern Stem Serving as Nerve Conduit and Cardiac Patch

Advances in Osteoblast and Mitochondrial Dynamics and Their Transfer in Osteoporosis

Bioactive matters based on natural product for cardiovascular diseases

Single dose of intravenous miR199a-5p delivery targeting ischemic heart for long-term repair of myocardial infarction

A novel microglia-targeting strategy based on nanoparticle-mediated delivery of miR-26a-5p for long-lasting analgesia in chronic pain

Cardiac organ chip: advances in construction and application.

Ammonium Persulfate-Loaded Carboxylic Gelatin–Methacrylate Nanoparticles Promote Cardiac Repair by Activating Epicardial Epithelial–Mesenchymal Transition via Autophagy and the mTOR Pathway

Engineering mechanical nonreciprocity in homogeneous materials: From biomimetic to bioapplications

A Core–Shell Nanoreinforced Ion‐Conductive Implantable Hydrogel Bioelectronic Patch with High Sensitivity and Bioactivity for Real‐Time Synchronous Heart Monitoring and Repairing

3D hypoxia-mimicking and anti-synechia hydrogel enabling promoted neovascularization for renal injury repair and regeneration

Cardiac Regeneration

Microenvironment responsive hypoxia-mimetic DFO composite hydrogel for on-demand neovascularization to promote tendon-to-bone healing

Biomimetic natural biomaterials for tissue engineering and regenerative medicine: new biosynthesis methods, recent advances, and emerging applications

Microglia-mediated inflammatory destruction of neuro-cardiovascular dysfunction after stroke

Cardiac-Adaptive Conductive Hydrogel Patch Enabling Construction of Mechanical–Electrical Anisotropic Microenvironment for Heart Repair

An injectable elastic hydrogel crosslinked with curcumin–gelatin nanoparticles as a multifunctional dressing for the rapid repair of bacterially infected wounds

Transdermal drug delivery via microneedles for musculoskeletal systems

Vanillin cross-linked hydrogel membranes interfacial reinforced by carbon nitride nanosheets for enhanced antibacterial activity and mechanical properties

Highly Stretchable and Biocompatible Wrinkled Nanoclay‐Composite Hydrogel With Enhanced Sensing Capability for Precise Detection of Myocardial Infarction

A smart adhesive Janus hydrogel for non-invasive cardiac repair and tissue adhesion prevention

Smart surface-based cell sheet engineering for regenerative medicine

A Vascularized Conductive Elastic Patch for the Repair of Infarcted Myocardium through Functional Vascular Anastomoses and Electrical Integration

A porous hydrogel scaffold mimicking the extracellular matrix with swim bladder derived collagen for renal tissue regeneration

A tunable self-healing ionic hydrogel with microscopic homogeneous conductivity as a cardiac patch for myocardial infarction repair

A self-healable, stretchable, tear-resistant and sticky elastomer enabled by a facile polymer blends strategy

From waste of marine culture to natural patch in cardiac tissue engineering

A SERS substrate with remarkable reproducibility: Adsorbing and detecting both hydrophobic and hydrophilic molecules using rGO/PEI/PAA/CD-AgNP nanocomposites

会议论文

A Nanocomposite-based Vascularized Elastic Conductive Patch for the Repair of Infarcted Myocardium

预印本

Transparent, Highly Robust, and Puncture-resistant Dynamic Adaptive Cross-linked Elastomers Towards Recyclable Multifunctional Sensors and Self-sensing Actuators

书籍章节

Nanocomposite Biomaterials for Tissue Engineering and Regenerative Medicine Applications

研究方向