4,824 research outputs found
Climate change adaptation and the Least Developed Countries Fund (LDCF): qualitative insights from policy implementation in the Asia-Pacific
Least developed countries often lack the requisite capacity to implement climate change adaptation projects. The Least Developed Countries Fund (LDCF) is a scheme where industrialized countries have (as of early 2016) disbursed $934.5 million in voluntary contributions, raised more than four times that amount in co-financing, and supported 213 adaptation projects across 51 least developed countries. But what sorts of challenges have arisen during implementation? Based on extensive field research in five least developed countries—Bangladesh, Bhutan, Cambodia, the Maldives, and Vanuatu—and original data collected from almost 150 research interviews, this article qualitatively explores both the benefits and challenges of LDCF projects in the Asia-Pacific. It finds that while LDCF projects do contribute to enhancing multiple types of infrastructural, institutional, and community-based adaptive capacity, they also suffer from uncertainty, a convoluted management structure, and an inability to fully respond to climate risks. Based on these findings, the study concludes that adaptation must be pursued as a multidimensional process; and that LDCF activities have tended to promote marginal rather than more radical or systematic transformations
Синтетические и растительные лекарственные средства с эстрогеноподобной активностью
Описаны синтетические и растительные соединения с эстрогеноподобной активностью. Рассмотрены механизмы их действия и возможности клинического применения.Описано синтетичні й рослинні сполуки з естрогеноподібною активністю. Розглянуто механізми їх дії та можливості клінічного використання.Synthetic and herbal compounds with estrogen-like activity are described. The mechanisms of their action and possibility of clinical application are discussed
On the Hydrodynamic Interaction of Shock Waves with Interstellar Clouds. II. The Effect of Smooth Cloud Boundaries on Cloud Destruction and Cloud Turbulence
The effect of smooth cloud boundaries on the interaction of steady planar
shock waves with interstellar clouds is studied using a high-resolution local
AMR technique with a second-order accurate axisymmetric Godunov hydrodynamic
scheme. A 3D calculation is also done to confirm the results of the 2D ones. We
consider an initially spherical cloud whose density distribution is flat near
the cloud center and has a power-law profile in the cloud envelope. When an
incident shock is transmitted into a smooth cloud, velocity gradients in the
cloud envelope steepen the smooth density profile at the upstream side,
resulting in a sharp density jump having an arc-like shape. Such a ``slip
surface'' forms immediately when a shock strikes a cloud with a sharp boundary.
For smoother boundaries, the formation of slip surface and therefore the onset
of hydrodynamic instabilities are delayed. Since the slip surface is subject to
the Kelvin-Helmholtz and Rayleigh-Taylor instabilities, the shocked cloud is
eventually destroyed in cloud crushing times. After complete cloud
destruction, small blobs formed by fragmentation due to hydrodynamic
instabilities have significant velocity dispersions of the order of 0.1 ,
where is the shock velocity in the ambient medium. This suggests that
turbulent motions generated by shock-cloud interaction are directly associated
with cloud destruction. The interaction of a shock with a cold HI cloud should
lead to the production of a spray of small HI shreds, which could be related to
the small cold clouds recently observed by Stanimirovic & Heiles (2005). The
linewidth-size relation obtained from our 3D simulation is found to be
time-dependent. A possibility for gravitational instability triggered by shock
compression is also discussed.Comment: 62 pages, 16 figures, submitted to Ap
Shifting perspectives on coastal impacts and adaptation
The Intergovernmental Panel on Climate Change reports reflect evolving attitudes in adapting to
sea-level rise by taking a systems approach and recognizing that multiple responses exist to achieve a
less hazardous coast.info:eu-repo/semantics/publishedVersio
The Phase Diagram of Disordered Vortices from London Langevin Simulations
We study the phase diagram of vortex matter in disordered type-II
superconductors. We performed numerical simulations in the London Langevin
approximation, using a new realistic representation of the disorder. At low
magnetic fields we find a disentangled and dislocation free Bragg-glass regime.
Increasing the field introduces disorder-driven entanglement in a discontinuous
manner, leading to a vortex-glass phase, which subsequently melts into the
vortex liquid. The obtained phase boundaries are in quantitative agreement with
the experimental data.Comment: 4 pages, revtex, 8 postscript figures include
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