Direct measurement of salt–mineral repulsion using atomic force microscopy

The disjoining pressure between a mineral and soluble salt crystal in concentrated aqueous solution has been successfully measured with atomic force microscopy

Isolating quantum coherence with pathway-selective coherent multi-dimensional spectroscopy

Coherent coupling between spatially separated systems has long been explored as a necessary requirement for quantum information and cryptography. Recent discoveries suggest such phenomena appear in a much wider range of processes, including light-harvesting in photosynthesis. These discoveries have been facilitated by developments in coherent multi-dimensional spectroscopy (CMDS) that allow interactions between different electronic states to be identified in crowded spectra. For complex systems, however, spectral broadening and multiple overlapping peaks limit the ability to separate, identify and properly analyse all contributions. Here we demonstrate how pathway-selective CMDS can overcome these limitations to reveal, isolate and allow detailed analysis of weak coherent coupling between spatially separated excitons localised to different semiconductor quantum wells. Selective excitation of the coherence pathways, by spectrally shaping the laser pulses, provides access to previously hidden details and enables quantitative analysis that can facilitate precise and detailed understanding of interactions in this and other complex systems

Electroweak Symmetry Breaking and Large Extra Dimensions

If spacetime contains large compact extra dimensions, the fundamental mass scale of nature, $Lambda$, may be close to the weak scale, allowing gravitational physics to significantly modify electroweak symmetry breaking. Operators of the form $(1/Lambda^2) |phi^* D phi|^2$ and $(1/Lambda^2) phi^* W B phi$, where $W$ and $B$ are the SU(2) and U(1) field strengths and $phi$ is the Higgs field, remove the precision electroweak bound on the Higgs boson mass for values of $Lambda$ in a wide range: $4 TeV < Lambda < 11 TeV$. Within this framework, there is no preference between a light Higgs boson, a heavy Higgs boson, or a non-linearly realized SU(2)xU(1) symmetry beneath $Lambda$. If there is a Higgs doublet, then operators of the form $(1/Lambda^2) phi^* phi (G^2, F^2)$, where $G$ and $F$ are the QCD and electromagnetic field strengths, modify the production of the Higgs boson by gluon-gluon fusion, and the decay of the Higgs boson to 2 photons, respectively. At Run II of the Tevatron collider, a 2-photon signal for extra dimensions will be discovered if $Lambda$ is below 2.5 (1) TeV for a Higgs boson of mass 100 (300) GeV. Furthermore, such a signal would point to gravitational physics, rather than to new conventional gauge theories at $Lambda$. The discovery potential of the LHC depends sensitively on whether the gravitational amplitudes interfere constructively or destructively with the standard model amplitudes, and ranges from $Lambda$ = 3 - 10 (2 - 4) TeV for a light (heavy) Higgs boson.Comment: 14 pages LaTeX, 3 figure

Exercise in Education

Exercise is a part of life. Every activity involved in life can be improved through exercise. However, some people may not be getting the exercise that they need. There are some serious health consequences (physically and mentally) if people were to lack exercise. Some of the problems we are facing today when it comes to lack of exercise is whether or not children are learning to be physically active in school. Students being more active can make a huge change in their life. This article talks about what exercise is, the benefits of it, the consequences for the lack of it, different types of it, and how it can be involved in daily classes to where students can get the exercise that they need and learn the topic of lesson that the exercise is involved

Individualized Artist Success Plan: An Asset-Based Perspective on Dis/Ability, The

https://remix.berklee.edu/able-assembly-conference/1023/thumbnail.jp

Anything for You Big Boy: A Comparative Analysis of Banking Regulation in the United States and the United Kingdom in Light of the LIBOR Scandal

In June 2012, Barclays Bank PLC entered into a settlement agreement with the United Kingdom’s Financial Services Authority and the United States’ Commodities Futures Trading Commission that settled Barclays’s role in manipulating the London Interbank Offered Rate, or LIBOR. The Barclays episode, and related scandal, provides an opportunity to examine approaches to financial regulation in the United Kingdom and the United States. This Note uses that opportunity to compare and contrast the approach to financial regulation in the United Kingdom and the United States. In particular, this Note contends that the LIBOR scandal reveals three problems with the then-existing approaches to financial regulation in the United Kingdom and United States. The three issues presented are 1) a problem with the people involved in setting LIBOR; 2) a problem with the publicity that banks face when they submit their rates to LIBOR; and 3) a problem with the way LIBOR is calculated that allows it to diverge too far from market realities. This Note also argues that the “light-touch” approach that characterizes financial regulation in the United Kingdom should be combined with the more intensive approach to regulation found in the United States. The Wheatley Review of LIBOR is held up as an example of this hybrid approach. This Note proceeds by first briefly presenting the history of LIBOR as well as presenting an account of the manipulation. The Note then reviews the structure of financial regulation in the United Kingdom, with special attention paid to the recent Wheatley Review of LIBOR. This Note presents a similar account of financial regulation in the United States, before comparing and contrasting the two approaches. This comparison generates the primary thrust of this Note’s argument that the two approaches should be combined. Before concluding, this Note deals with several counter-arguments. The conclusion then explains how the Wheatley Review embodies the hybrid approach advocated in this Note