Deployable aerospace PV array based on amorphous silicon alloys

The development of the first commercial, ultralight, flexible, deployable, PV array for aerospace applications is discussed. It is based on thin-film, amorphous silicon alloy, multijunction, solar cells deposited on a thin metal or polymer by a proprietary, roll-to-roll process. The array generates over 200 W at AM0 and is made of 20 giant cells, each 54 cm x 29 cm (1566 sq cm in area). Each cell is protected with bypass diodes. Fully encapsulated array blanket and the deployment mechanism weigh about 800 and 500 g, respectively. These data yield power per area ratio of over 60 W/sq m specific power of over 250 W/kg (4 kg/kW) for the blanket and 154 W/kg (6.5 kg/kW) for the power system. When stowed, the array is rolled up to a diameter of 7 cm and a length of 1.11 m. It is deployed quickly to its full area of 2.92 m x 1.11 m, for instant power. Potential applications include power for lightweight space vehicles, high altitude balloons, remotely piloted and tethered vehicles. These developments signal the dawning of a new age of lightweight, deployable, low-cost space arrays in the range from tens to tens of thousands of watts for near-term applications and the feasibility of multi-100 kW to MW arrays for future needs

Report of the Link Resolver Implementation Team

The Link Resolver Implementation Team was charged in March 2016 with carrying out the recommendations of the Link Resolver Investigation Team (http://hdl.handle.net/2027.42/117361), which were to re-launch the MGet It link resolver service as a locally-hosted application using the existing 360 Link knowledge base and the Umlaut open-source software. Specifically, the Implementation Team was asked to: 1) Design a user interface using Umlaut and the 360 Link API; 2) Select and prioritize added services in the link resolver menu interface; 3) Determine what, if anything, should be part of a report-a-problem link and implement corresponding workflows; and 4) Determine in which circumstances the link resolver menu page should appear for which kinds of users. This report outlines our decisions on these three points, details user studies to design the interface, and describes the roll-out process. The new MGet It service was released as a limited beta for library staff on September 14, 2016. After a period of review and feedback from library staff, and subsequent adjustments to the interface, the new interface replaced the native 360 Link interface on Monday, October 17, 2016.http://deepblue.lib.umich.edu/bitstream/2027.42/135723/1/link resolver implementation team final report.pdfDescription of link resolver implementation team final report.pdf : Final Repor

Mammography messages in popular media: implications for patient expectations and shared clinical decision-making

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75005/1/j.1369-6513.2001.00120.x.pd

An environmentally benign antimicrobial nanoparticle based on a silver-infused lignin core

Silver nanoparticles have antibacterial properties, but their use has been a cause for concern because they persist in the environment. Here, we show that lignin nanoparticles infused with silver ions and coated with a cationic polyelectrolyte layer form a biodegradable and green alternative to silver nanoparticles. The polyelectrolyte layer promotes the adhesion of the particles to bacterial cell membranes and, together with silver ions, can kill a broad spectrum of bacteria, including Escherichia coli, Pseudomonas aeruginosa and quaternary-amine-resistant Ralstonia sp. Ion depletion studies have shown that the bioactivity of these nanoparticles is time-limited because of the desorption of silver ions. High-throughput bioactivity screening did not reveal increased toxicity of the particles when compared to an equivalent mass of metallic silver nanoparticles or silver nitrate solution. Our results demonstrate that the application of green chemistry principles may allow the synthesis of nanoparticles with biodegradable cores that have higher antimicrobial activity and smaller environmental impact than metallic silver nanoparticles