289 research outputs found
Combined analysis of 08/09 and 2010 experiments
At a meeting held in Canberra in July 2010, it was agreed to undertake a study to investigate whether a combined analysis of the 08/09 series of LMA experiments and the single 2010 experiment was feasible. The current protocol for classification of lines relies on obtaining information from two valid LMA screening experiments. The analysis of the 08/09 series of experiments represented the first attempt to undertake a combined analysis of LMA screening experiments. It is well known (see for example, Mrode [1995]) that the optimum methodology to evaluate genetic material for eventual selection is to use a multivariate or multi-trait analysis. This multi-trait analysis takes account of the relationships which exist between the different traits. In our example, each experiment is considered as a trait and so for these data we have three traits, one for each experiment
Transhumant Sheep grazing enhances ecosystem multifunctionality in productive mountain grasslands: a case study in the Cantabrian Mountains
.Understanding the effects of traditional livestock grazing abandonment on the
ability of mountain grasslands to sustain multiple ecosystem functions (ecosystem
multifunctionality; EMF) is crucial for implementing policies that promote grasslands
conservation and the delivery of multiple ecosystem services. In this study, we evaluated
the effect of short- and long-term transhumant sheep abandonment on EMF through a
grazing exclusion experiment in a grassland of the Cantabrian Mountains range (NW
Spain), where transhumant sheep flocks graze in summer. We considered four key
ecosystem functions, derived from vegetation and soil functional indicators measured
in the field: (A) biodiversity function, evaluated from total plant species evenness,
diversity and richness indicators; (B) forage production function, evaluated from cover
and richness of perennial and annual herbaceous species indicators; (C) carbon
sequestration function, evaluated from woody species cover and soil organic carbon
indicators; and (D) soil fertility function, evaluated from NH4C-N, NO3-N, P and K
content in the soil. The EMF index was calculated by integrating the four standardized
ecosystem functions through an averaging approach. Based on linear mixed modeling
we found that grazing exclusion induced significant shifts in the considered individual
ecosystem functions and also on EMF. Long-term livestock exclusion significantly
hindered biodiversity and forage production functions, but enhanced the carbon
sequestration function. Conversely, the soil fertility function was negatively affected by
both short- and long-term grazing exclusion. Altogether, grazing exclusion significantly
decreased overall EMF, especially in long-term livestock exclusion areas, while the
decline in EMF in short-term exclusions with respect to grazed areas was marginally
significant. The results of this study support the sustainability of traditional transhumance
livestock grazing for promoting the conservation of grasslands and their ecosystem
function in mountain regions.S
Mechanisms of international influence on domestic elite sport policy
In the analysis of sport policy the permeability of domestic policy processes and the significance of non-domestic policy influences is increasingly acknowledged. There is also a growing awareness of the role of domestic institutional arrangements in mediating influences external to the domestic policy system. Taking the interaction between non-domestic influences and domestic policy processes as its starting point the article evaluates, in relation to elite sport, the variety of mechanisms that have been identified as linking the domestic and non-domestic policy spheres. It is argued that the mechanisms vary in relation to the locus of initiative, the basis of engagement, the key relationships and the nature of power relationships. It is also argued that in many countries in relation to elite sport policy there is a dual process in operation of domestically initiated policy learning and non-domestically initiated policy harmonisation through policy regimes
The coexistence of peace and conflict in South America: toward a new conceptualization of types of peace
South America's predominant democratic regimes and its increasing interdependence on regional trade have not precluded the emergence of militarized crises between Colombia and Venezuela or the revival of boundary claims between Chile and Peru. This way, how can we characterize a zone that, in spite of its flourishing democracy and dense economic ties, remain involved in territorial disputes for whose resolution the use of force has not yet been discarded? This article contends that existing classifications of zones of peace are not adequate to explain this unusual coexistence. Thus, its main purpose is to develop a new analytical category of regional peace for assessing this phenomenon: the hybrid peace. It aims to research the evolution of security systems in South America during the previous century and build a new, threefold classification of peace zones: negative peace zones, hybrid peace zones, and positive peace zones
Metabolic Effects Associated with ICS in Patients with COPD and Comorbid Type 2 Diabetes: A Historical Matched Cohort Study
Background Management guidelines for chronic obstructive pulmonary disease (COPD) recommend that inhaled corticosteroids (ICS) are prescribed to patients with the most severe symptoms. However, these guidelines have not been widely implemented by physicians, leading to widespread use of ICS in patients with mild-to-moderate COPD. Of particular concern is the potential risk of worsening diabetic control associated with ICS use. Here we investigate whether ICS therapy in patients with COPD and comorbid type 2 diabetes mellitus (T2DM) has a negative impact on diabetic control, and whether these negative effects are dose-dependent. Methods and Findings This was a historical matched cohort study utilising primary care medical record data from two large UK databases. We selected patients aged >= 40 years with COPD and T2DM, prescribed ICS (n = 1360) or non-ICS therapy (n = 2642) between 2008 and 2012. The primary endpoint was change in HbA(1c) between the baseline and outcome periods. After 1:1 matching, each cohort consisted of 682 patients. Over the 12-18-month outcome period, patients prescribed ICS had significantly greater increases in HbA1c values compared with those prescribed non-ICS therapies; adjusted difference 0.16% (95% confidence interval [Cl]: 0.05-0.27%) in all COPD patients, and 0.25% (95% Cl: 0.10-0.40%) in mild-to-moderate COPD patients. Patients in the ICS cohort also had significantly more diabetes-related general practice visits per year and received more frequent glucose strip prescriptions, compared with those prescribed non-ICS therapies. Patients prescribed higher cumulative doses of ICS (> 250 mg) had greater odds of increased HbA(1c) and/or receiving additional antidiabetic medication, and increased odds of being above the Quality and Outcomes Framework (QOF) target for HbA1c levels, compared with those prescribed lower cumulative doses ( Conclusion For patients with COPD and comorbid T2DM, ICS therapy may have a negative impact on diabetes control. Patients prescribed higher cumulative doses of ICS may be at greater risk of diabetes progression
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