1,168 research outputs found
Exact Baryon, Strangeness and Charge Conservation in Hadronic Gas Models
Relativistic heavy ion collisions are studied assuming that particles can be
described by a hadron gas in thermal and chemical equilibrium. The exact
conservation of baryon number, strangeness and charge are explicitly taken into
account. For heavy ions the effect arising from the neutron surplus becomes
important and leads to a substantial increase in e.g. the ratio.
A method is developed which is very well suited for the study of small systems.Comment: 5 pages, 5 Postscript figure
First upper limit analysis and results from LIGO science data: stochastic background
I describe analysis of correlations in the outputs of the three LIGO
interferometers from LIGO's first science run, held over 17 days in August and
September of 2002, and the resulting upper limit set on a stochastic background
of gravitational waves. By searching for cross-correlations between the LIGO
detectors in Livingston, LA and Hanford, WA, we are able to set a 90%
confidence level upper limit of h_{100}^2 Omega_0 < 23 +/- 4.6.Comment: 7 pages; 1 eps figures; proceeding from 2003 Edoardo Amaldi Meeting
on Gravitational Wave
FOLK USES OF MUSHROOMS BY THE AKOKO-EDO PEOPLE OF NIGERIA
A study carried out on the folk uses and ethnomycology of wild edible and medicinal mushrooms by five selected communities: Igarra, Sasaru, Egbigere, Ikpeshi and Aghor in Akoko-Edo Local Government Area of Edo State, Nigeria showed that about 86% of respondents consumed mushrooms. About 12.5% of the respondents consumed mushrooms because of its taste, 54.2% used them as substitutes for meat or fish, 16.7% use certain mushrooms e.g. sclerotium of Pleurotus tuberregium and Schizophyllum commune while 9.2% sold them for extra incomes. Auricularia judae, Cortinarius melliolens, Macrolepiota procera, Lactarius edulis, Lycoperdon sp., Pleurotus tuberregium, P. squarrosulus, Termitomyces robustus and Tricholoma lobayense were identified as edible species, while Daldinia concentrica, Ganoderma lucidum, G. applanatum (Pers.) Pat. and Nothopanus sp. were used in traditional medicine practices. The source of utilitarian mushrooms remained forests, agroforests and farms in many communities studied, and their collection and/or sales reserved for women and childre
Reduction procedures for accurate analysis of MSX surveillance experiment data
Technical challenges of the Midcourse Space Experiment (MSX) science instruments require careful characterization and calibration of these sensors for analysis of surveillance experiment data. Procedures for reduction of Resident Space Object (RSO) detections will be presented which include refinement and calibration of the metric and radiometric (and photometric) data and calculation of a precise MSX ephemeris. Examples will be given which support the reduction, and these are taken from ground-test data similar in characteristics to the MSX sensors and from the IRAS satellite RSO detections. Examples to demonstrate the calculation of a precise ephemeris will be provided from satellites in similar orbits which are equipped with S-band transponders
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