Digital Commons Network^™

Adaptive Evolution And Inherent Tolerance To Extreme Thermal Environments, Jennifer Cox, Alyxandria Schubert, Michael Travisano, Catherine Putonti

Catherine Putonti

Background When introduced to novel environments, the ability for a species to survive and rapidly proliferate corresponds with its adaptive potential. Of the many factors that can yield an environment inhospitable to foreign species, phenotypic response to variation in the thermal climate has been observed within a wide variety of species. Experimental evolution studies using bacteriophage model systems have been able to elucidate mutations, which may correspond with the ability of phage to survive modest increases/decreases in the temperature of their environment. Results Phage ΦX174 was subjected to both elevated (50°C) and extreme (70°C+) temperatures for anywhere from a few …

Hispanic Maternal And Children's Perceptions Of Neighborhood Safety Related To Walking And Cycling, Norma Olvera, Dennis W. Smith, Chanam Lee, Jian Liu, Jay Lee, Stephanie Kellam, Jun-Hyun Kim

Jian Liu

This study examined neighborhood safety as perceived by children (mean age=10 years) and their mothers, and its association with children's physical activity. For all eight safety items examined, children perceived their environment as less dangerous than mothers (p<0.05). None of the multiple regression models predicting children's physical activity by safety perceptions were significant (p>0.10). The maternal perception model explained the highest percentage of variance (R2=0.26), compared to the children's perception model (R2=0.22). Findings suggest that future studies should explore relations between self-reported and objectively measured safety barriers to Hispanic youth walking and cycling.

Impact Of Water And Sanitation And Health Education Interventions On Health And Hygiene Behaviors: A Study From A Northern Pakistani Village, Aysha Zahidie, Fauziah Rabbani

Fauziah Rabbani

Introduction: Water and sanitation interventions were delivered in the northern areas of Pakistan as a joint venture of the Aga Khan University and the Aga Khan Health Systems Oshikhandass Diarrhea and Dysentery Project (1989-96) followed by the Aga Khan Water, Sanitation, Health and Hygiene Studies Program (WSHHSP). Through these interventions water treatment plants, new pit latrines along with a component of health education were introduced. Objectives: To explore perceptions, knowledge and practices of inhabitants of Oshikhandass village in Gilgit related to water quality, latrine use and hand washing following the intervention. Methods: Through a cross-sectional study during June-July 2012, six …

Modelling And Hazard Analysis For Contaminated Sediments Using Stamp Model And Stpa Tool, Karim Hardy, Franck Guarnieri

Karim Hardy

The goal of this article is dual: first, introducing a new model of accident named STAMP (systems-theoretic accident modeling and processes); then applying the model to an innovative process for the treatment of contaminated substances and the re-use of treated substances. This article is a demonstration for a need of a new tool to take into account hazards and safety within socio-technical systems.

Multiscalar Governance And Climate Change: Reflections On The Role Of States And Cities At Copenhagen, Hari M. Osofsky

Hari Osofsky

No abstract provided.

Environmental Advocacy: Insights From East Asia, Mary Alice Haddad

Mary Alice Haddad

Urbanization Is A Buzz Kill, Yvelande Raymond

Yvelande Raymond

Nutrient Management Plan, Antonio Mallarino, John Sawyer, Barbara Stewart, John Creswell

John E. Sawyer

Management tools to help you develop a nutrient management plan and use the Iowa Phosphorus Index.

Nitrogen Application, John Sawyer, John Creswall

John E. Sawyer

Nitrogen (N) management planning for corn production.