Cardiovascular diseases are one of the leading causes of death globally. Among various cardiovascular diseases, myocardial infarction is an important one. Compared with conventional treatments, cardiac tissue engineering provides an alternative to repair and regenerate the injured tissue. Among various types of materials used for tissue engineering applications, silk biomaterials have been increasingly utilized due to their biocompatibility, biological functions, and many favorable physical/chemical properties. Silk biomaterials are often used alone or in combination with other materials in the forms of patches or hydrogels, and serve as promising delivery systems for bioactive compounds in tissue engineering repair scenarios. This review focuses primarily on the promising characteristics of silk biomaterials and their recent advances in cardiac tissue engineering.

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This paper analyzes the relationship between industrial clusters' talents agglomeration effects and high-tech enterprises' innovations through exploiting high-tech industry's features and the benefits of clustering mechanism, such as collective innovation channels and knowledge spillover effects, points out that industrial clusters' talents agglomeration effects improve the high-tech enterprises' innovation efficiency and hence promote the enterprises' economic growth and development, and discusses the factors which affect clusters' talents agglomeration effects.

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