DHS Working Papers No. 103
DHS Working Papers No. 104.
This guide is a resource for future health professionals who want to learn about and engage in abortion issues. Abortion is a critical but often neglected area of women’s rights, women’s health and health science education. The guide ences students was developed for health sciences students -inc...luding students in medicine, nursing, midwifery, pharmacology, public health and other related fields
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Examination of the business behaviour of Boehringer Ingelheim, Bayer and Baxter in Uganda
DHS Working Papers No. 106
Compendium of Case Studies
Research Article
Karo et al. BMC Infectious Diseases 2014, 14:148 http://www.biomedcentral.com/1471-2334/14/148
PlosOne December 10, 2014 https://doi.org/10.1371/journal.pone.0111913
Plastic pollution is ubiquitous throughout the marine environment, yet estimates of the global abundance and weight of floating plastics have lacked data, particularly from the Southern Hemisphere and remote regions. Here we re...port an estimate of the total number of plastic particles and their weight floating in the world's oceans from 24 expeditions (2007–2013) across all five sub-tropical gyres, costal Australia, Bay of Bengal and the Mediterranean Sea conducting surface net tows (N = 680) and visual survey transects of large plastic debris (N = 891). Using an oceanographic model of floating debris dispersal calibrated by our data, and correcting for wind-driven vertical mixing, we estimate a minimum of 5.25 trillion particles weighing 268,940 tons. When comparing between four size classes, two microplastic <4.75 mm and meso- and macroplastic >4.75 mm, a tremendous loss of microplastics is observed from the sea surface compared to expected rates of fragmentation, suggesting there are mechanisms at play that remove <4.75 mm plastic particles from the ocean surface.
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