Spring 2015, Serving Our 1,000+ International Students

As the population of international students and scholars continues to grow, the integration of campus resources to serve them is becoming more and more vital. OISS, the Office of International Students and Scholars, collaborates with many offices and organizations around campus to cultivate working relationships that will benefit this effort, not just on campus but within the local community. International students and scholars arrive at UNH from about 85 different countries. One can see all the different countries represented by the colorful display of flags in the MUB. There was a time where UNH proudly had flags from A-Z, but our student from Zambia has graduated and gone on to a successful career

Fabrication and testing of negative-limited sealed nickel-cadmium cells

The design, construction, and testing of 100,20Ah and 100,3Ah negative-limited sealed cells are reported. The required physical dimensions of the hardware and components necessary to produce 20 and 3 Ah cells were established. The stainless steel cans and covers have been ordered. The covers contain two ceramic seals. The fabrication of electrodes was started. About 55% (879 electrodes) of the required cadmium electrodes has been prepared. About 44% of the porous nickel substrates (plaques) required for the preparation of the nickel oxide electrodes has been completed

Improved plaque materials for aerospace nickel-cadmium cells

Improved cadmium electrode substrates with precisely controlled microstructures for possible use in aerospace nickel-cadmium cells were prepared. The preparative technique was a powder metallurgical process in which a fugitive pore-former and a nickel powder were blended, then isostatically compacted, and subsequently sintered. Cadmium electrodes prepared from such substrates were cycle tested using an accelerated tortuous test regime. It was discovered that plaques of 60% or 80% porosity prepared with a 25 micron pore-former were better than state-of-the-art electrodes in terms of efficienty and/or mechanical strength. The 60% structures were particularly outstanding in this respect in that they had efficiencies only 5-10 percentage points lower than state-of-the-art electrodes and vastly superior mechanical properties. This added strength was observed to eliminate cracking and physical degradation of the electrodes during processing and cycling. The cadmium electrodes prepared from the 80% porous substrates proved to be the best electrodes made during the course of the work from the point of view of highest efficiency. Three-point bend tests were used to measure mechanical properties of the plaques produced and also as a general characterization tool. In addition, the BET surface areas of selected specimens was determined. The SEM was used for judging microscopic uniformity and quantitatively determining the induced pore size and various other fine structures in the substrates. The technique of X-ray radiography was used to follow the bulk uniformity of the substrates at various stages of their processing

PARAFFIN: AN ECONOMIC AND ECOLOGICAL ALTERNATIVE FOR BONE CONSERVATION

Fragile bone materials are ubiquitous in archaeological museum and forensic settings. Although there are many chemical and industrial options for conservation, these may adversely affect the bone objects undergoing preservative treatment. Here, paraffin is explored as a biologically friendly alternative to bone material conservation. Modern domestic pig ribs were subjected to paraffin treatment and then to isotopic analysis to quantify and investigate the chemical effects of paraffin. Although the results showed that paraffin had a limited impact, the sample size proved too small to display the definitive parameters of paraffin’s effects. The results were nevertheless compelling enough to warrant more research with a greater sample size