Integrated carbon fiber electrodes within hollow polymer microneedles for transdermal electrochemical sensing

In this study, carbon fiber electrodes were incorporated within a hollow microneedle array, which was fabricated using a digital micromirror device-based stereolithography instrument. Cell proliferation on the acrylate-based polymer used in microneedle fabrication was examined with human dermal fibroblasts and neonatal human epidermal keratinocytes. Studies involving full-thickness cadaveric porcine skin and trypan blue dye demonstrated that the hollow microneedles remained intact after puncturing the outermost layer of cadaveric porcine skin. The carbon fibers underwent chemical modification in order to enable detection of hydrogen peroxide and ascorbic acid; electrochemical measurements were demonstrated using integrated electrode-hollow microneedle devices.     

Evaluation of usage of virtual microscopy for the study of histology in the medical,dental, and veterinary undergraduate programs of a UK University

This article describes the introduction of a virtual microscope (VM) that has allowed preclinical histology teaching to be fashioned to better suit the needs of approximately 900 undergraduate students per year studying medicine, dentistry, or veterinary science at the University of Bristol, United Kingdom. Features of the VM implementation include: (1) the facility for students and teachers to make annotations on the digital slides; (2) in‐house development of VM‐based quizzes that are used for both formative and summative assessments; (3) archiving of teaching materials generated each year, enabling students to access their personalized learning resources throughout their programs; and (4) retention of light microscopy capability alongside the VM. Student feedback on the VM is particularly positive about its ease of use, the value of the annotation tool, the quizzes, and the accessibility of all components off‐campus. Analysis of login data indicates considerable, although variable, use of the VM by students outside timetabled teaching. The median number of annual logins per student account for every course exceeded the number of timetabled histology classes for that course (1.6–3.5 times). The total number of annual student logins across all cohorts increased from approximately 9,000 in the year 2007–2008 to 22,000 in the year 2010–2011. The implementation of the VM has improved teaching and learning in practical classes within the histology laboratory and facilitated consolidation and revision of material outside the laboratory. Discussion is provided of some novel strategies that capitalize on the benefits of introducing a VM, as well as strategies adopted to overcome some potential challenges. Anat Sci Educ 7: 389–398. © 2013 American Association of Anatomists.     

Requests About Explosives and Illicit Drugs: A New Paradigm

This article addresses what reference librarians should do when patrons ask for information about explosives or dangerous drugs, and explores how reference librarians can possibly deter people from dangerous, unmediated searches by proactively providing information and actual examples on the dangers and risks of making and using these materials.     

Stakeholder perceptions of university library effectiveness

This research in New Zealand, based on the multiple constituencies model, identified key performance indicators in university libraries as perceived by six separate stakeholder groups. Ranked lists and correlations between the lists show similarities, but also confirm that stakeholder groups have different perspectives on library effectiveness.     

The importance of ethnicity in ethnic studies programs

A study was undertaken to determine the importance of ethnicity in an ethnic studies program. Three different dimensions were examined (1) the importance of the ethnicity of the teacher in the opinions of administrators and students; (2) ethnic differences among students in attitudes and expectations regarding such a program; (3) the relationship between the structure or content of the ethnic studies program and the long-range ethnic goals of society. Results of a nationwide sample of academic deans and a sample of students from two colleges in San Antonio, Texas, indicate that the ethnicity of teachers is an important concern for both administrators and students. It was also found that attitudes and expectations, as well as what the primary function of the program and the long-range ethnic goals should be, differed with the ethnicity of students.     

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