The oxygen and carbon dioxide compensation points of C3 plants: possible role in regulating atmospheric oxygen.

The O2 and CO2 compensation points (O2 and CO2) of plants in a closed system depend on the ratio of CO2 and O2 concentrations in air and in the chloroplast and the specificities of ribulose bisphosphate carboxylase/oxygenase (Rubisco). The photosynthetic O2 is defined as the atmospheric O2 level, with a given CO2 level and temperature, at which net O2 exchange is zero. In experiments with C3 plants, the O2 with 220 ppm CO2 is 23% O2; O2 increases to 27% with 350 ppm CO2 and to 35% O2 with 700 ppm CO2. At O2 levels below the O2, CO2 uptake and reduction are accompanied by net O2 evolution. At O2 levels above the O2, net O2 uptake occurs with a reduced rate of CO2 fixation, more carbohydrates are oxidized by photorespiration to products of the C2 oxidative photosynthetic carbon cycle, and plants senesce prematurely. The CO2 increases from 50 ppm CO2 with 21% O2 to 220 ppm with 100% O2. At a low CO2/high O2 ratio that inhibits the carboxylase activity of Rubisco, much malate accumulates, which suggests that the oxygen-insensitive phosphoenolpyruvate carboxylase becomes a significant component of the lower CO2 fixation rate. Because of low global levels of CO2 and a Rubisco specificity that favors the carboxylase activity, relatively rapid changes in the atmospheric CO2 level should control the permissive O2 that could lead to slow changes in the immense O2 pool.

Key points for abolishing Female Genital Mutilation from the perspective of the men involved

Introduction: female Genital Mutilation is internationally considered an affront on human rights and an act of violence against women and young girls. Furthermore, it hierarchises and perpetuates inequality and denies the right to bodily and psychosocial integrity of women and young girls. Aims: to detect the key points for the abolition of Female Genital Mutilation as well as the necessary resources for its eradication. Material and Method: a qualitative methodology with an ethnonursing perspective, via semi-structured interviews, held both individually and in groups, in 21 men familiar with Female Genital Mutilation. Findings: through the voices of men familiar with this tradition, five key points are presented for its gradual eradication: sensitisation and awareness building, team action, abolition-promoting media, focusing action on rural areas and applying educational means before punitive ones. Conclusion and practical implications: awareness-raising via the combined efforts of families, communities and governments, together with the promotion of health education programmes in demonstrating the complications derived from this practice, play a vital part in eradicating Female Genital Mutilation.

Prediction of blackwood wood and pulp quality parameters using NIR-PLS-R spectral modelling : wavenumber ranges and smoothing points

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The Europe barometer points to stormy weather. CEPS Commentary, 15 February 2013

Against the current background of a sharp decline in public support for the EU and an emerging reinforced centre to manage the euro crisis, this commentary finds that the only way Europe’s leaders can hope to keep the fragile equilibrium afloat is to summon up the courage to go forward with concrete proposals for political union.

Focal points and fiscal discipline. ACES Cases No. 2013.2

Many studies suggest that balanced budget rules can restrain sovereign debt and lower sovereign borrowing costs, even if those rules are never enforced in court. Typically, this is explained as a result of a legal deterrence logic, in which the threat of judicial enforcement deters sovereigns from violating the rules. By contrast, we argue that balanced budget rules work by coordinating decentralized punishment of sovereigns by bond markets, rather than by posing a credible threat of judicial enforcement. Therefore, the clarity of the focal point provided by the rule, rather than the strength of its judicial enforcement mechanisms, determines its effectiveness. We develop a formal model that captures the logic of our argument, and we assess this model using data on US states. We then consider implications of our argument for the impact of the balanced budget rules recently imposed on eurozone states in the Fiscal Compact Treaty.

Debating the European debt crisis: Government leadership, party ideology and supranational integration as focal points of parliamentary debates in Austria, Germany and the United Kingdom. ACES Cases No. 2012.3

Parliamentary debates about the resolution of the EU debt crisis seem to provide a good example for the frequently assumed “politicizationˮ of European governance. Against this background, the paper argues that in order to make sense of this assumption, a clearer differentiation of three thematic focal points of controversies – with regard to the assessment of government leadership, concerning the debate between competing party ideologies within the left/right dimension, and with regard to the assessment of supranational integration – is needed. Applying this threefold distinction, the paper uses a theory of differential Europeanization to explain differences in the thematic structure of debates in the Austrian Nationalrat, the British House of Commons, and the German Bundestag. Empirically, the paper is based on data gained from the computer-based coding of plenary debates about the resolution of the European debt crisis between 2010 and 2011.