Non-exponential relaxation and hierarchically constrained dynamics in a protein

A scaling analysis within a model of hierarchically constrained dynamics is shown to reproduce the main features of non-exponential relaxation observed in kinetic studies of carbonmonoxymyoglobin.Comment: 4 pages, 3 figures in text. Reference errors have been correcte

Inverse Beta Decay in a Nonequilibrium Antineutrino Flux from a Nuclear Reactor

The evolution of the reactor antineutrino spectrum toward equilibrium above the inverse beta-decay threshold during the reactor operating period and the decay of residual antineutrino radiation after reactor shutdown are considered. It is found that, under certain conditions, these processes can play a significant role in experiments seeking neutrino oscillations.Comment: 8 pages including 5 ps figure

Music-Listening Behavior of Adolescents and Hearing Conservation: many risks, few precautions

Noise-induced hearing loss (NIHL) is a significant social and public-health problem. Long-term exposure to high-volume levels will cause permanent hearing loss after 5-10 years. With the massive spread in the popularity of portable MP3 players, exposure to high sound levels has increased dramatically, and millions of adolescents and young adults are potentially at risk of permanent hearing loss by listening to their favorite music. In order to prevent hearing loss or to prevent any mild hearing loss to progress to more severe hearing loss, it is necessary to reduce exposure to high-volume sounds, including music. This may be induced through health education aimed at promotion of protective behaviors among the children and young people themselves, or through health protection measures. It is important that this is done step by step through careful theory-based intervention planning. The research as presented in this thesis reports on studies on adolescents music-related risk and protective behaviors, important and modifiable determinants of such behaviors, and ideas and opinions of experts, key persons and decision-makers on the possibilities for potentially effective strategies and interventions for the prevention of music-induced hearing loss in adolescents. In the project that this thesis reports upon a mix of qualitative and quantitative approaches has been applied such as a summary of the literature, focus group as well as individual interviews, a Delphi study, and a school-based survey

Relation between the 0νββ0\nu\beta\beta and 2νββ2\nu\beta\beta nuclear matrix elements revisited

We show that the dominant Gamow-Teller part, $M^{0\nu}_{GT}$, of the nuclear matrix element governing the neutrinoless $\beta\beta$ decay is related to the matrix element $M^{2\nu}_{cl}$ governing the allowed two-neutrino $\beta\beta$ decay. That relation is revealed when these matrix elements are expressed as functions of the relative distance $r$ between the pair of neutrons that are transformed into a pair of protons in the $\beta\beta$ decay. Analyzing this relation allows us to understand the contrasting behavior of these matrix elements when $A$ and $Z$ is changed; while $M^{0\nu}_{GT}$ changes slowly and smoothly, $M^{2\nu}$ has pronounced shell effects. We also discuss the possibility of phenomenological determination of the $M^{2\nu}_{cl}$ and from them of the $M^{0\nu}_{GT}$ values from the experimental study of the $\beta^{\pm}$ strength functions

Cabbage Diseases

Cabbage diseases are the chief limiting factor In profitable commerclal cabbage growing In Iowa. The most destructive of these are black·leg, black-rot, and cabbage yellows. Any one may destroy the greater portion of a crop. The first two are known to be distributed with the seed and cause Infection of the young plants In the seed bed. Some of these naturally find their way Into the field and under favorable conditions become destructive. Cabbage yellows may also be distributed with the seed but Is probably more commonly spread with the plants by the soil adhering to the roots

Computer program developed for flowsheet calculations and process data reduction

Computer program PACER-65, is used for flowsheet calculations and easily adapted to process data reduction. Each unit, vessel, meter, and processing operation in the overall flowsheet is represented by a separate subroutine, which the program calls in the order required to complete an overall flowsheet calculation