A versatile and economical method for collecting macroinvertebrates using Hester-Dendy multiplate samplers.

We present an inexpensive, versatile, and robust mounting system for Hester-Dendy (HD) multiplate samplers that are useful in aquatic biological studies and freshwater biomonitoring programs. Detailed instructions are provided outlining the construction and deployment of a concrete block system featuring threaded anchors for screwing in HD columns in a vertical position. Additionally, eye bolts provide a central attachment point for cabling the block securely to the stream or river bank, and for attachment of a buoy or physiochemical data logger if desired.

Sino-U.S. Decoupling: The Roles of U.S. Congress.

The Sino-U.S. relations tumbled during the Trump Administration.

Redesigning Supply Chains using Blockchain-Enabled Circular Economy and COVID-19 Experiences.

The COVID-19 pandemic has exposed businesses and societies to the shortfalls of patterns of production, consumption, and their long-lasting impact on supply chains. In this opinion paper, we provide insights from the COVID-19 pandemic for making supply chains more resilient, transparent, and sustainable. These insights include supply chains needing to develop localization, agility, and digitization (LAD) characteristics.