When savannas recover from overgrazing, ecohydrological connectivity collapses

Aging: when the ubiquitin–proteasome machinery collapses

In mammalian cells, protein degradation is an essential and dynamic process that is crucial for survival, growth, differentiation and proliferation of cells. Tellingly, the majority of intracellular proteins are degraded via the ubiquitin–proteasome system (UPS). UPS-mediated protein degradation serves qualitative and quantitative roles within the cellular proteome. For instance, UPS specifical...

When will US Employment Recover from the Great Recession?

When will the Antarctic ozone hole recover?

[1] The Antarctic ozone hole demonstrates large-scale, man-made affects on our atmosphere. Surface observations now show that human produced ozone-depleting substances (ODSs) are declining. The ozone hole should soon start to diminish because of this decline. We demonstrate a parametric model of ozone hole area that is based upon a new algorithm for estimating chlorine and bromine levels over A...

The effects of overgrazing on soil microbial community and fertility in the Chaco dry savannas of Argentina

We identi®ed and measured changes in soil characteristics, nutrient availability and microbial activity to a gradient of grazing intensity in the Chaco region of northwestern Argentina (248 430 S and 638 170 W). Three sites were selected for comparison: 1. highly restored (no grazing for 20 years); 2. moderately restored (eight years of restoration); and 3. highly degraded (a typical Chaco camp...

recover from failures

Recovery uncovered: How people in the chemical process industry recover from failures / Preface As with many things in life, the idea of doing a PhD had to grow on me for a while, before I realized that this definitely was the way to go. On the road to making it happen, I have been helped by a lot of people. In the first place by my supervisor Tjerk van der Schaaf, the man with the many ideas a...