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71.
Ruhul A. Khan Stephane Salmieri Dominic Dussault Nathalie Tufenkji Jorge Uribe-Calderon Musa R. Kamal Agnes Safrany Monique Lacroix 《Journal of Polymers and the Environment》2012,20(1):43-52
Chitosan (0.1–1%, w/w), dissolved in 2% acetic acid solution, was added into 1% methylcellulose (MC)-based formulation containing
0.5% vegetable oil, 0.25% glycerol and 0.025% Tween?80. Films were prepared by casting. Puncture strength (PS), puncture deformation (PD), viscoelasticity coefficient and water
vapour permeability (WVP) of the films were measured. The PS value of 312 N/mm was observed for MC-based films containing
0.25% chitosan. Values of PD, viscoelasticity coefficient and WVP of these films were 5.0 mm, 44.1%, and 6.0 g mm/m2 day kPa, respectively. The MC-based films containing 0.25% chitosan were also exposed to gamma radiation (0.5–50 kGy). The
PS of the treated films decreased significantly from 312 at 0 kGy to 201 N/mm when treated at a dose of 50 kGy. However, WVP
values were not affected by increasing irradiation the dose used. The Fourier Transform Infrared spectroscopy supported the
molecular interactions due to addition of chitosan in MC-based films. Thermo gravimetric analysis and differential scanning
calorimetric experiments showed that thermal properties of the films were significantly improved by chitosan loading. Surface
topography of the films was studied by scanning electron microscopy and found rougher due to chitosan addition. 相似文献
72.
Jeremy Cain Charles Batchelor Dominic Waughray 《Environment, Development and Sustainability》1999,1(2):123-133
Successful long-term management of natural resources requires the development of strategies which recognise the constraints pertaining to the environmental system and can therefore be realistically expected to work. This paper presents a new technique for strategy formulation using belief networks, a framework based on Bayesian probability calculus that supports the investigation of complex environmental systems by the user and analysis of all constraints. While mathematical in nature, belief networks are superficially simple and allow concepts to be expressed in terms with which a wide range of user will be familiar. This offers a participatory approach to the development of management strategies through consideration of the impact of potential management options with consequent benefits for strategy implementation. 相似文献
73.
Stefanie Jacob Andreas Dötsch Sarah Knoll Heinz-R. Köhler Eike Rogall Dominic Stoll Selina Tisler Carolin Huhn Thomas Schwartz Christian Zwiener Rita Triebskorn 《Environmental Sciences Europe》2018,30(1):48