Conceptions and expectations of mentoring relationships in a teacher education reform context

Peer reviewedPostprin

End-Use Certificates for Wheat: Trade-Distorting Administrative Barriers?

International Relations/Trade,

Creativity in Science Education : producing new narratives for a sustainable future?

Peer reviewedPreprin

Understanding the nature of mentoring experiences between teachers and student teachers

Peer reviewedPostprin

The Clustering of AGN in the Sloan Digital Sky Survey

We present the two--point correlation function (2PCF) of narrow-line active galactic nuclei (AGN) selected within the First Data Release of the Sloan Digital Sky Survey. Using a sample of 13605 AGN in the redshift range 0.055 < z < 0.2, we find that the AGN auto--correlation function is consistent with the observed galaxy auto--correlation function on scales 0.2h^{-1}Mpc to >100h^{-1}Mpc. The AGN hosts trace an intermediate population of galaxies and are not detected in either the bluest (youngest) disk--dominated galaxies or many of the reddest (oldest) galaxies. We show that the AGN 2PCF is dependent on the luminosity of the narrow [OIII] emission line (L_{[OIII]}), with low L_{[OIII]} AGN having a higher clustering amplitude than high L_{[OIII]} AGN. This is consistent with lower activity AGN residing in more massive galaxies than higher activity AGN, and L_{[OIII]} providing a good indicator of the fueling rate. Using a model relating halo mass to black hole mass in cosmological simulations, we show that AGN hosted by ~ 10^{12} M_{odot} dark matter halos have a 2PCF that matches that of the observed sample. This mass scale implies a mean black hole mass for the sample of M_{BH} ~ 10^8 M_{odot}.Comment: 5 pages, 4 figures. Accepted for publication in ApJ

Globalisation and the Anthropocene:The Reconfiguration of Science Education for a Sustainable Future

In this article we discuss current impacts on the planet as a result of technoscientificdevelopments and neo-liberal policy. We argue that science educationhas an important role to play in supporting society to respond to newchallenges ahead. However there needs to be a change to the way in whichscience is introduced in schools to raise awareness of complex global interconnectednessand our embeddedness in the natural (and increasingly altered)planetary cycles. Such awareness changes how we view the practiceof science and the way in which science is presented in schools. Drawing onrecent literature, this paper will present an argument for the reconfigurationof science education for a sustainable future

Scallops, schools and scholars : reflections on the emergence of a research-oriented learning project

Peer reviewedPostprin

Scientific questions for the exploration of the terrestrial planets and Jupiter - Advanced planetary missions technology program Progress report

Scientific questions and experimental design for planetary exploration of Jupiter, Mars, Mercury, and Venu

Soil temperature and electric potential during diurnal and seasonal freeze-thaw

Combined measurements of soil temperature and electric potential in the upper 15 cm of a glacial sandy-loam soil were made during the winters of 1986-1987 and 19871988 at the University of Michigan Botanical Gardens using an electronic data acquisition system at frequencies varying from 10 min to daily (midnight). Most of the data was collected at hourly intervals.Analysis of temperature-potential time series at two locations with probes at (0, 3, 6, 9) and (0, 5, 10, 15) cm depths indicated that the variation of electric potential relative to the potential of a 1.5 m ground spike could be interpreted as the response of an electrolytic concentration cell without transference formed by a probe and the ground spike. As the electrolyte concentration is much greater at the ground spike, and electric potential varies inversely with concentration, the potentials at the soil probes varied over the range of approximately 300-700 mV in a manner consistent with the behavior of a concentration cell.The rapid and systematic pattern of potential variation during freeze-thaw events demonstrates that the effects of electrolyte concentration and dilution are products of evaporation-distillation, the melting of frost-purified ice, soil water advection to the freezing-evaporating region, concentrated electrolyte expulsion from the freezing region and the infiltration of rain and snow melt waters.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/27857/1/0000269.pd

Human cases of simultaneous echinococcosis and tuberculosis - significance and extent in China

During analysis of retrospective community survey data, we identified two patients from Xiji County, south Ningxia Hui Autonomous Region with simultaneous echinococcosis and tuberculosis (TB), representing the first such reports for China. As the echinococcosis chronicity increased, the immune profile in both subjects changed from a Th1 to Th2 response, as shown by a TB skin test, originally positive, becoming negative. Such an elevated Th2 immune profile, with subsequent suppression of the Th1 immune response, is a common feature of chronic helminth infections. Given the difficulties in definitive diagnosis, and the potential increased susceptibility for TB infection in patients with advanced echinococcosis, we suggest that combined TB/echinococcosis surveys be undertaken in this area in the future. This would allow early diagnosis of both TB and echinococcosis cases with better prognosis for effective and sustainable treatment outcomes, ultimately reducing associated morbidity and mortality, and also the overall financial costs to the individual and the public health care system in this under developed part of China