Community Development and Family Support: Forging a Practical Nexus to Strengthen Families and Communities

Examines methods used by organizations to integrate elements of community development and family support in their conceptual frameworks and programmatic efforts. Provides recommendations for promoting these concepts and practices

Geologic maps of early Apollo landing sites of set C

Geological maps of potential Apollo landing sites on lunar surfac

4D sequential actuation:Combining ionoprinting and redox chemistry in hydrogels

The programmable sequential actuation of two-dimensional hydrogel membranes into three-dimensional folded architectures has been achieved by combining ionoprinting and redox chemistry; this methodology permits the programmed evolution of complex architectures triggered through localized out-of-plane deformations. In our study we describe a soft actuator which utilizes ionoprinting of iron and vanadium, with the selective reduction of iron through a mild reducing agent, to achieve chemically controlled sequential folding. Through the optimization of solvent polarity and ionoprinting variables (voltage, duration and anode composition), we have shown how the actuation pathways, rate-of-movement and magnitude of angular rotation can be controlled for the design of a 4D sequential actuator