1,017 research outputs found
Rare plant conservation planning workshop results: Middle Park
This document identifies conservation strategies for Penland penstemon and Kremmling milkvetch, based on an assessment of the plants' viability and threats by participants of a June 2008 workshop. The primary audience is intended to be the workshop participants and other stakeholders interested in helping to implement the strategies.Sponsored by the Colorado Rare Plant Conservation Initiative, June 26, 2008
Normal peroxisome development from vesicles induced by truncated Hansenula polymorpha Pex3p
We show that the synthesis of the N-terminal 50 amino acids of Pex3p (Pex3p(1-50)) in Hansenula polymorpha pex3 cells is associated with the formation of vesicular membrane structures. Biochemical and ultrastructural findings suggest that the nuclear membrane is the donor membrane compartment of these vesicles. These structures also contain Pex14p and can develop into functional peroxisomes after subsequent reintroduction of the full-length Pex3p protein. We discuss the significance of this finding in relation to peroxisome reintroduction, e.g. in case peroxisomes are lost due to failure in inheritance
Rare plant conservation planning workshop results: Pagosa Springs
This document identifies conservation strategies for Pagosa skyrocket, based on an assessment of the plant's viability and threats by participants of a June 2008 workshop. The primary audience is intended to be the workshop participants and other stakeholders interested in helping to implement the strategies.Sponsored by the Colorado Rare Plant Conservation Initiative, June 12, 2008
Inducible Integral Membrane Proteins in Microbody-Membranes of Hansenula Polymorpha; β-Oxidation in Methylotrophic Yeasts
Induction and properties of beta-adrenergic receptors during erythroid differentiation of Friend leukemic cells.
Effects of exoplanetary gravity on human locomotor ability
At some point in the future, if mankind hopes to settle planets outside the
Solar System, it will be crucial to determine the range of planetary conditions
under which human beings could survive and function. In this article, we apply
physical considerations to future exoplanetary biology to determine the
limitations which gravity imposes on several systems governing the human body.
Initially, we examine the ultimate limits at which the human skeleton breaks
and muscles become unable to lift the body from the ground. We also produce a
new model for the energetic expenditure of walking, by modelling the leg as an
inverted pendulum. Both approaches conclude that, with rigorous training,
humans could perform normal locomotion at gravity no higher than 4
.Comment: 12 pages, 4 figures, to be published in The Physics Teache
The role of mentorship in protege performance
The role of mentorship on protege performance is a matter of importance to
academic, business, and governmental organizations. While the benefits of
mentorship for proteges, mentors and their organizations are apparent, the
extent to which proteges mimic their mentors' career choices and acquire their
mentorship skills is unclear. Here, we investigate one aspect of mentor
emulation by studying mentorship fecundity---the number of proteges a mentor
trains---with data from the Mathematics Genealogy Project, which tracks the
mentorship record of thousands of mathematicians over several centuries. We
demonstrate that fecundity among academic mathematicians is correlated with
other measures of academic success. We also find that the average fecundity of
mentors remains stable over 60 years of recorded mentorship. We further uncover
three significant correlations in mentorship fecundity. First, mentors with
small mentorship fecundity train proteges that go on to have a 37% larger than
expected mentorship fecundity. Second, in the first third of their career,
mentors with large fecundity train proteges that go on to have a 29% larger
than expected fecundity. Finally, in the last third of their career, mentors
with large fecundity train proteges that go on to have a 31% smaller than
expected fecundity.Comment: 23 pages double-spaced, 4 figure
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Scenarios as the basis for assessment of mitigation and adaptation
The possibilities and need for adaptation and mitigation depends on uncertain future developments with respect to socio-economic factors and the climate system. Scenarios are used to explore the impacts of different strategies under uncertainty. In this chapter, some scenarios are presented that are used in the ADAM project for this purpose. One scenario explores developments with no mitigation, and thus with high temperature increase and high reliance on adaptation (leading to 4oC increase by 2100 compared to pre-industrial levels). A second scenario explores an ambitious mitigation strategy (leading to 2oC increase by 2100 compared to pre-industrial levels). In the latter scenario, stringent mitigation strategies effectively reduces the risks of climate change, but based on uncertainties in the climate system a temperature increase of 3oC or more cannot be excluded. The analysis shows that, in many cases, adaptation and mitigation are not trade-offs but supplements. For example, the number of people exposed to increased water resource stress due to climate change can be substantially reduced in the mitigation scenario, but even then adaptation will be required for the remaining large numbers of people exposed to increased stress. Another example is sea level rise, for which adaptation is more cost-effective than mitigation, but mitigation can help reduce damages and the cost of adaptation. For agriculture, finally, only the scenario based on a combination of adaptation and mitigation is able to avoid serious climate change impacts
Scenarios and models for exploring future trends of biodiversity and ecosystem services changes. Final report to the European Commission, DG Environment on Contract
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