20 research outputs found
Quark Hadron Phase Transition and Hybrid Stars
We investigate the properties of hybrid stars consisting of quark matter in
the core and hadron matter in outer region. The hadronic and quark matter
equations of state are calculated by using nonlinear Walecka model and chiral
colour dielectric (CCD) model respectively. We find that the phase transition
from hadron to quark matter is possible in a narrow range of the parameters of
nonlinear Walecka and CCD models. The transition is strong or weak first order
depending on the parameters used. The EOS thus obtained, is used to study the
properties of hybrid stars. We find that the calculated hybrid star properties
are similar to those of pure neutron stars.Comment: 25 pages in LaTex and 9 figures available on request, IP/BBSR/94-3
Markov chains and computer aided geometric design: Part IIâexamples and subdivision matrices
Constructed wetlands: a review
The first aim of this invited literature review is critically to review and evaluate hydrological, physical
and biochemical processes within natural and constructed wetlands. The second aim is to contribute
the thoughts of the authors to the discussion with the help of a case study focusing on gully pot
liquor treatment. The performances of constructed treatment wetlands with and without macrophytes,
and aggregates of different adsorption capacities will be assessed, principle findings highlighted and
conclusions, also relevant to the literature review, will be drawn. The relationships between aggregates,
microbial and plant communities as well as the reduction of predominantly biochemical
oxygen demand, suspended solids and heavy metals are investigated. After maturation of the
biomass, which dominates the litter zone, organic and inorganic contaminants are usually reduced
similarly for all wetland types. There appears to be no additional benefit in using macrophytes and
expensive adsorption media in constructed wetlands