1,541 research outputs found

    Developing modern multifunctional agroforestry systems for sustainable intensification

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    Agroforestry is a land-use system that integrates trees and shrubs with crops and/or livestock production. It has been identified by the International Assessment of Agricultural Knowledge, Science and Technology for Development (IAASTD, 2008) as a ‘win-win’ approach that balances the production of commodities (food, feed, fuel, fibre, etc.) with non-commodity outputs such as environmental protection and cultural and landscape amenities. This paper will review the potential of agroforestry as part of a multifunctional working landscape in temperate regions, and will consider management and policy implications of widespread adoption of this form of land-use

    Is Bariatric Surgery an Effective Treatment for Type II Diabetic Kidney Disease?

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    Type II diabetic kidney disease is devastating to patients and society alike. This review will evaluate bariatric surgery as a treatment for diabetic kidney disease primarily through its ability to induce and maintain regression of type II diabetes. The review begins by outlining the global challenge of diabetic kidney disease, its link to obesity, and the comparative benefits of bariatric surgery on weight and type II diabetes. It then surveys comprehensively the relevant literature, which reports that although bariatric surgery is associated with reductions in albuminuria, its effect on harder clinical end points like progression of diabetic kidney disease is not known. The review also includes a critical assessment of the risks and costs of bariatric surgery and concludes by acknowledging the major knowledge gaps in the field and providing research strategies to overcome them. Until these knowledge gaps are filled, clinicians will be forced to rely on their own subjective judgment in determining the benefit-risk ratio of bariatric surgery for patients with diabetic kidney disease

    A review of knowledge of the potential impacts of GMOs on organic agriculture

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    The organic movement believes that organic agriculture, by its nature, cannot involve the use of genetically modified organisms (GMOs). This has been incorporated into EU regulations which state that there is no place in organic agriculture for GMOs. The aim in this review is to consider the ways in which the use of GMOs in agriculture in the UK and internationally might impact on organic farming. It does not address the controversy about the rights or wrongs of GMO’s per se. The subjects covered are based on a set of questions raised at the beginning of the study. The review is based primarily on evidence from peer-reviewed literature. The report is based on a number of themes, as follows: • Fate of DNA in soil • Fate of DNA in livestock feed and possible impact of GM feed • Fate of DNA in slurry, manure, compost and mulch • Impact of herbicide tolerant crops • Impact of pest and disease resistant crops • Safety of promoters • DNA transfer in pollen and seeds • Horizontal gene transfer • Impact of scale The report’s Executive Summary includes summaries of the findings on each of these themes

    Speciesism, identity politics and ecocriticism : a conversation with humanists and posthumanists

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    An electronic conversation between 7 scholars from the fields of animal studies and early modern studies aimed at confronting "speciesism," and constructing what Cary Wolfe calls a "posthumanist theory of the subject.

    A participatory approach to variety trials for organic systems

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    A participatory research methodology was used to compare the performance of UK wheat varieties under organic conditions. Plots of three breadmaking winter wheat varieties (Hereward, Solstice and Xi19) and a mixture (1:1:1) of the varieties were grown at 19 UK farms in two seasons (2003/04 and 2004/05). Meas-urements were taken of growth habit, yield and grain quality. Grain yields in both seasons showed significant site by variety interactions, although the variation among sites was greater than among varieties in both instances. Wheat grown at Western sites was significantly shorter and higher-yielding than that grown at Eastern sites in 2003/04 but significantly taller in 2004/05. As with grain yield, greater variation among site than variety was found in the Hagberg Falling Number and protein concentra-tion results in both seasons. The results from the two years of trials illustrate the variability of organic systems and the difficulty in selecting a single variety suitable for organic farms

    Executive Officer FROM:

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    now called the “California Wetlands Portal ” (CWP), as a condition in many water quality certifications to track losses and gains of wetlands and streams 2. This third annual report summarizes impacts and compensatory mitigation to wetlands and streams for projects certified in 2009

    On the Top-Weight Rational Cohomology of Ag\mathcal{A}_g

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    We compute the top-weight rational cohomology of Ag\mathcal{A}_g for g=5g=5, 66, and 77, and we give some vanishing results for the top-weight rational cohomology of A8,A9,\mathcal{A}_8, \mathcal{A}_9, and A10 \mathcal{A}_{10}. When g=5g=5 and g=7g=7, we exhibit nonzero cohomology groups of Ag\mathcal{A}_g in odd degree, thus answering a question highlighted by Grushevsky. Our methods develop the relationship between the top-weight cohomology of Ag\mathcal{A}_g and the homology of the link of the moduli space of principally polarized tropical abelian varieties of rank gg. To compute the latter we use the Voronoi complexes used by Elbaz-Vincent-Gangl-Soul\'e. Our computations give natural candidates for compactly supported cohomology classes of Ag\mathcal{A}_g in weight 00 that produce the stable cohomology classes of the Satake compactification of Ag\mathcal{A}_g in weight 00, under the Gysin spectral sequence for the latter space.Comment: 33 pages, 3 figure

    Laparoscopic Roux-en-Y Gastric Bypass for Morbid Obesity

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    Surgery is currently the only effective treatment for morbid obesity. The two most commonly accepted operations are the Roux-en-Y gastric bypass and vertical banded gastroplasty. Although multiple authors have reported on a laparoscopic approach to gastric banding, the Roux-en-Y gastric bypass is a complex operation to be replicated using laparoscopic techniques. In this article, we describe our technique of the Roux-en-Y gastric bypass using a laparoscopic approach in four cases

    Legume based plant mixtures for delivery of multiple ecosystem services: An overview of benefits

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    As costs for mineral fertilizers rise, legume-based leys are recognised as a potential alternative nitrogen source for crops. Here we demonstrate that including species-rich legume-based leys in the rotation helps to maximize synergies between agricultural productivity and other ecosystem services. By using functionally diverse plant species mixtures these services can be optimised and fine-tuned to regional and farm-specific needs. Field experiments run over three years at multiple locations showed that the stability of ley performance was greater in multi-species mixtures than in legume monocultures. In addition, mixing different legume species in the ley helps to suppress both early and late weeds. Further, combining complementary phenologies of different legume species extended forage availability for key pollinator species. Finally, widening the range of legume species increases opportunities to build short term leys into rotations on conventional farms via cover cropping or undersowing
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