Structure of excited vortices with higher angular momentum in Bose-Einstein condensates

The structure of vortices in Bose-Einstein condensed atomic gases is studied taking into account many-body correlation effects. It is shown that for excited vortices the particle density in the vortex core increases as the angular momentum of the system increases. The core density can increase by several times with only a few percent change in the angular momentum. This result provides an explanation for the observations in which the measured angular momentum is higher than the estimation based on counting the number of vortices, and the visibility of the vortex cores is simultaneously reduced. The calculated density profiles for the excited vortices are in good agreement with experimental measurements.Comment: 4 pages, 1 figur

Respon Pertumbuhan Bibit Induk Jamur Tiram Putih (Pleurotus Ostreatus) Pada Lima Media Biji Sorgum

Growth Response Of Pleurotus Ostreatus Parent Seed At Five Different Sorghum Medium. The research was conducted in Biotechnology Laboratory of Kupang State Agricultural Polytechnic in one month, December 2008. The research was aimed to know the growth response of Pleurotus ostreatus parent seed at five different sorghum medium.This research used sorghum seed as mycelium of Pleurotus ostreatus growth medium. The variables that used to measure were mycelium growth time and mycelium of Pleurotus ostreatus scattered which measured from the beginning of mycelium scattered. The result shown that the fastest growth and scattered of Pleurotus ostreatus mycelium was Sikun sorghum and the lowest growth and scattered of Pleurotus ostreatus mycelium was Pisan sorghum

An Experimental Investigation of the Scaling of Columnar Joints

Columnar jointing is a fracture pattern common in igneous rocks in which cracks self-organize into a roughly hexagonal arrangement, leaving behind an ordered colonnade. We report observations of columnar jointing in a laboratory analog system, desiccated corn starch slurries. Using measurements of moisture density, evaporation rates, and fracture advance rates as evidence, we suggest an advective-diffusive system is responsible for the rough scaling behavior of columnar joints. This theory explains the order of magnitude difference in scales between jointing in lavas and in starches. We investigated the scaling of average columnar cross-sectional areas due to the evaporation rate, the analog of the cooling rate of igneous columnar joints. We measured column areas in experiments where the evaporation rate depended on lamp height and time, in experiments where the evaporation rate was fixed using feedback methods, and in experiments where gelatin was added to vary the rheology of the starch. Our results suggest that the column area at a particular depth is related to both the current conditions, and hysteretically to the geometry of the pattern at previous depths. We argue that there exists a range of stable column scales allowed for any particular evaporation rate.Comment: 12 pages, 11 figures, for supporting online movies, go to http://www.physics.utoronto.ca/nonlinear/movies/starch_movies.htm

Curtis\u27s botanical magazine.

v.142=ser.4:v.12 (1916) [no.8642-8691

Curtis\u27s botanical magazine.

v.136=ser.4:v.6 (1910) [no.8292-8351

The provision of fire services in rural areas

Fire services have been neglected in discussions of public service provision in rural areas. The way in which they are provided has a broader significance in terms of current debates about risk management. Fire service policy was transferred away from the Home Office, but the Bain Report provided the major stimulus to change. Early central government attempts to stimulate fire service provision in rural area were hampered by a lack of cooperation between local authorities. Rates of death from fire are influenced by attendance times and are particularly high in remote rural areas. The development of national standards of fire cover was focused on protecting property rather than saving lives with disproportionate funding being provided for urban areas. Social changes in rural areas have made it more difficult to secure sufficient numbers of retained fire fighters. It has proved particularly difficult to provide an adequate service in remote rural areas such as the Highlands and Islands of Scotland, despite recent policy initiatives there. Problems of providing fire cover are particularly acute on isolated islands. The development of integrated risk management plans should offer a more fine grained approach to providing fire cover. However, they may be too sophisticated for the task in rural areas and more traditional democratic mechanisms for expressing perceived community needs may have a greater relevance