39 research outputs found
Baryon Density Correlations in High Temperature Hadronic Matter
As part of an ongoing effort to characterize the high temperature phase of
QCD, in a numerical simulation using the staggered fermion scheme, we measure
the quark baryon density in the vicinity of a fixed test quark at high
temperature and compare it with similar measurements at low temperature and at
the crossover temperature. We find an extremely weak correlation at high
temperature, suggesting that small color singlet clusters are unimportant in
the thermal ensemble. We also find that at the total induced
quark number shows a surprisingly large component attributable to baryonic
screening. A companion simulation of a simple flux tube model produces similar
results and also suggests a plausible phenomenological scenario: As the
crossover temperature is approached from below, baryonic states proliferate.
Above the crossover temperature the mean size of color singlet clusters grows
explosively, resulting in an effective electrostatic deconfinement.Comment: 26 pp, RevTeX, 12 postscript figures, combined in a single shell
archive file. (Also available in 13 postscript files by anonymous ftp from
einstein.physics.utah.edu, /pub/milc/paper.sh.Z.
Indução do amadurecimento de peras 'Rocha' submetidas à baixa temperatura e à aplicação de etileno
Tratamento pelo fluconazol de pacientes imuno-comprometidos com graves infecçÔes fĂșngicas Treatment by fluconazole of severe fungal infections in immunocompromised patients
Avaliou-se a eficĂĄcia do fluconazol no tratamento de infecçÔes fĂșngicas em 108 pacientes imunocomprometidos. As doses iniciais variaram de 50 a mais de 400 mg/dia. Dos 108 pacientes, 57 (52,8%) tinham criptococose, 45 (41,7%) candidĂase e 6 (5,5%) outras infecçÔes fĂșngicas, sendo que 66,6% dos pacientes eram portadores de AIDS. Dos 57 pacientes com criptococose houve acometimento do SNC em 52 (91,2%); 39 de 43 pacientes com criptococose (90,7%) e 36 de 39 dos portadores de candidĂase (92,3%) curaram ou tiveram boa evolução clĂnica. A erradicação do fungo ocorreu em 19 de 30 casos com criptococose (63,3%) e em 21 de 26 casos com candidĂase (80,7%) que puderam ser avaliados. Onze dos 108 pacientes (10,2%) apresentaram reaçÔes adversas,principalmente gastrintestinais de pequena intensidade, porĂ©m um paciente apresentou envolvimento hepĂĄtico na vigĂȘncia de terapĂȘutica com fluconazol. Conclui-se que o fluconazol Ă© droga eficaz e de baixa toxicidade para tratar criptococose e candidĂase, constituindo-se boa alternativa Ă terapĂȘutica convencional com anfotericina B.<br>Fluconazole therapy was evaluated prospec-tively in 108 patients with immunossupression and serious fungal infections. Patients were enrolled if they had a life-threatening fungal infection and conventional therapy had failed to eradicate infection, had caused serious toxic reactions, or was contraindicated. Patients were treated with 50 to over 400 mg/day initially. AIDS was underlying risk factor in 66.6% of the patients evaluated in the study and in 92.9% of 57 patients with cryptococcal infection. Satisfactory clinical response was observed in 43 patients with active cryptococcal infection and in 39 patients with active candidiasis, 90.7% and 92.3% respectively. Concerning mycologic response, 63.3% and 80.7% of 30 patients with cryptococcal infection and 26 patients with candidiasis respectively had final negative cultures. Eleven patients (10.2%) had adverses effects possibly due to fluconazole therapy. Fluconazole may be effective in the treatment of cryptococcal infection and candidiasis and can be an alternative to conventional antifungal therapy