27 research outputs found
Renormalization group approach of itinerant electron systems near the Lifshitz point
Using the renormalization approach proposed by Millis for the itinerant
electron systems we calculated the specific heat coefficient for
the magnetic fluctuations with susceptibility near the Lifshitz point. The constant value
obtained for and the logarithmic temperature dependence, specific
for the non-Fermi behavior, have been obtained in agreement with the
experimental dat.Comment: 6 pages, Revte
Universal corrections to the Fermi-liquid theory
We show that the singularities in the dynamical bosonic response functions of
a generic 2D Fermi liquid give rise to universal, non-analytic corrections to
the Fermi-liquid theory. These corrections yield a term in the specific
heat, terms in the effective mass and the uniform spin susceptibility
, and term in . The existence of these
terms has been the subject of recent controversy, which is resolved in this
paper. We present exact expressions for all non-analytic terms to second order
in a generic interaction and show that only U(0) and matter.Comment: references added, a typo correcte
Withdrawal of maintenance therapy for cytomegalovirus retinitis in AIDS patients exhibiting immunological response to HAART
BACKGROUND: Before the introduction of highly active antiretroviral therapy (HAART), CMV retinitis was a common complication in patients with advanced HIV disease and the therapy was well established; it consisted of an induction phase to control the infection with ganciclovir, followed by a lifelong maintenance phase to avoid or delay relapses. METHODS: To determine the safety of CMV maintenance therapy withdrawal in patients with immune recovery after HAART, 35 patients with treated CMV retinitis, on maintenance therapy, with CD4+ cell count greater than 100 cells/mm³ for at least three months, but almost all patients presented these values for more than six months and viral load < 30000 copies/mL, were prospectively evaluated for the recurrence of CMV disease. Maintenance therapy was withdrawal at inclusion, and patients were monitored for at least 48 weeks by clinical and ophthalmologic evaluations, and by determination of CMV viremia markers (antigenemia-pp65), CD4+/CD8+ counts and plasma HIV RNA levels. Lymphoproliferative assays were performed on 26/35 patients. RESULTS: From 35 patients included, only one had confirmed reactivation of CMV retinitis, at day 120 of follow-up. No patient returned positive antigenemia tests. No correlation between lymphoproliferative assays and CD4+ counts was observed. CONCLUSION: CMV retinitis maintenance therapy discontinuation is safe for those patients with quantitative immune recovery after HAART
Pore-Scale Distribution of Mucilage Affecting Water Repellency in the Rhizosphere
The physical properties of the rhizosphere are strongly influenced by root-exuded mucilage, and there is increasing evidence that mucilage affects the wettability of soils on drying. We introduce a conceptual model of mucilage deposition during soil drying and its impact on soil wettability. We hypothesized that as soil dries, water menisci recede and draw mucilage toward the contact region between particles. At low mucilage contents (milligrams per gram of soil), mucilage deposits have the shape of thin filaments that are bypassed by infiltrating water. At higher contents, mucilage deposits occupy a large fraction of the pore space and make the rhizosphere hydrophobic. This hypothesis was confirmed by microscope images and contact angle measurements. We measured the initial contact angle of quartz sand (0.5–0.63- and 0.125–0.2-mm diameter), silt (36–63-μm diameter), and glass beads (0.1–0.2-mm diameter) mixed with varying amounts of chia ( L.) seed mucilage (dry content range 0.2–19 mg g) using the sessile drop method. We observed a threshold-like occurrence of water repellency. At low mucilage contents, the water drop infiltrated within 300 ms. Above a critical mucilage content, the soil particle–mucilage mixture turned water repellent. The critical mucilage content decreased with increasing soil particle size. Above this critical content, mucilage deposits have the shape of hollow cylinders that occupy a large fraction of the pore space. Below the critical mucilage content, mucilage deposits have the shape of thin filaments. This study shows how the microscopic heterogeneity of mucilage distribution impacts the macroscopic wettability of mucilage-embedded soil particles
Guideliness In Paracoccidioidomycosis [consenso Em Paracoccidioidomicose]
[No abstract available]393297310Coutinho, Z.F., Silva, D., Lazera, M., Petri, V., Oliveira, R.M., Sabroza, P.C., Wanke, B., Paracoccidioidomycosis mortality in Brazil (1980-1995) (2002) Cadernos de Saúde Publica, 18, pp. 1441-1454. , Rio de JaneiroLacaz, C.S., Porto, E., Martins, J.E.C., Heins-Vaccari, E.M., Melo, N.T., Paracoccidioidomicose (2002) Tratado de Micologia Médica Lacaz, pp. 639-729. , Lacaz CS, Porto E, Martins JEC, Heins-Vaccari EM, Melo NT (eds) Sarvier Editora de Livros Médicos Ltda., São PauloRestrepo-Moreno, A., Ecology of Paracoccidioides brasiliensis (1994) Paracoccidioidomycosis, 1 st Edition, pp. 121-130. , Franco MF, Lacaz CS, Restrepo-Moreno A, Del Negro G (eds) CRC Press, Boca RatonValle, A.C.F., Wanke, B., Wanke, N., Peixoto, T.C., Perez, M., Tratamento da paracoccidioidomicose: Estudo retrospectivo de 500 casos. I-Análise clÃnica, laboratorial e epidemiológica (1992) Anais Brasileiros de Dermatologia, 67, pp. 251-254Wanke, B., Londero, A.T., Epidemiology and paracoccidioidomycosis infection (1994) Paracoccidioidomycosis, pp. 109-120. , Franco MF, Lacaz CS, Restrepo-Moreno A, Del Negro G (eds) CRC Press, Boca RatonBenard, G., Franco, M., Paracoccidoidomycosis (2005) Medical Mycology, Topley's and Wilson's Microbiology and Microbial Infections, 10 th Edition, pp. 541-559. , Merz WG, Hay RJ (eds) Hodder Arnold, London, CapÃtulo de livroBorges-Walmsley, M.I., Chen, D., Shu, X., Walmsley, A.R., The pathobiology of Paracoccidioides brasiliensis (2002) Trends Microbiology, 2, pp. 80-87. , Revisão sobre aspectos da patogenia da doençaFerreira, M.S., Queiroz-Telles, F., Imunopatogênese e Patologia (2005) Tratado de Infectologia, 3 a. 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Edição, pp. 1313-1340. , Foccacia R (ed) Atheneu Editora, São Paulo, Revisão compreensiva sobre interação hospedeiro parasito na paracoccidioidomicoseAlmeida, S.M., Queiroz-Telles, F., Teive, H.A., Ribeiro, C.E., Werneck, L.C., Central nervous system paracoccidioidomycosis: Clinical features and laboratory findings (2004) Journal Infection, 48, pp. 193-198Barbosa, W., Daher, R., Oliveira, A.R., Forma linfático-abdominal da blastomicose abdominal (1968) Revista Do Instituto de Medicina Tropical de São Paulo, 10, pp. 16-27Bisinelli, J.C., Queiroz-Telles, F., Sobrinho, J.A., Rapoport, A., Manifestações estomatológicas da paracoccidioidomicose (2001) Revista Brasileira de Otorrinolaringologia, 67, pp. 683-687Colombo, A.L., Queiroz-Telles, F., Graybill, J., Paracoccidioidomycosis (2000) Atlas of Infectious Diseases. Current Medicine, pp. 54-63. , Mandell GD, Diamond RD (eds). Ed. Philadelphia, USA, CapÃtulo de atlas contendo principais aspectos ilustrados da doençaDel Negro, G., Melo, E.H.L., Rodbard, D., Melo, M.R., Layton, J., Rodbard, H.W., Limited adrenal reserve in Paracoccidiodomycosis, cortisol and aldosterone responses to 1-24 ACTH (1980) Clinical Endocrinology, 13, pp. 553-559Londero, A.T., Paracoccidiodomicose. I. patogenia, formas clÃnicas, manifestações pulmonares e diagnóstico (1986) Jornal de Pneumologia, 12, pp. 41-60Londero, A.T., Ramos, C.D., Paracoccidiodomicose. Estudo clÃnico e micológico de 260 casos observados no interior do estado do Rio Grande do Sul (1990) Jornal de Epidemiologia, 16, pp. 129-132Marques, S.A., Paracoccidioidomicose: Atualização Epidemiológica, ClÃnica e Terapêutica (2003) Anais Brasileiros de Dermatologia, 78, pp. 135-150Martinez, R., Meneguelli, U.G., Dantas, R.O., Fiorillo, A.M., O comprometimento gastrintestinal na Blastomicose Sul-Americana (Paracoccidiodomicose). 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Report of seven cases (1995) Revista Instituto Medicina Tropical São Paulo, 37, pp. 261-265Pedro, R.J., Aoki, F.H., Boccato, R.S.B., Branchini, M.L.M., Gonçales Jr., F.L., Papaiordanou, P.M.O., Ramos, M.C., Paracoccidioidomicose e infecção pelo vÃrus da imunodeficiência humana (1989) Revista Instituto Medicina Tropical São Paulo, 31, pp. 119-125. , Primeiro caso relatado de PCM em paciente com AidsSilva-Vergara, M.L., Teixeira, A.C., Curi, V.G., Costa Junior, J.C., Vanunce, R., Carmo, W.M., Silva, M.R., Paracoccidioidomycosis associated with human immunodeficiency virus infection. Report of 10 cases (2003) Medical Mycology, 41, pp. 259-263Leão, R.C., Mendes, E., Paracoccidioidomycosis, neoplasia and associated infections (1980) Allergologia Immunopathologia, 8 (3), pp. 185-198. , MadriMarques, S.A., Shikanai-Yasuda, M.A., Paracoccidioidomycosis associated sith immunosuppression, Aids and cancer (1994) Paracoccidioidomycosis, 1 st Edition, pp. 393-405. , Franco M, Lacaz CS, Restrepo-Moreno A, Del Negro G (eds) CRC Press, Boca Raton, Revisão da literatura sobre associação de PCM e câncer até o perÃodo, com ênfase na relação entre a micose e câncerShikanai-Yasuda, M.A., Duarte, M.I., Nunes, D.F., Lacaz, C.S., Sabagga, E., Abdala, E., Duarte, A.J., Lopes, M.H., Paracoccidioidomycosis in a renal transplant recipient (1995) Journal Medical Veterinary Mycology, 33, pp. 411-414Sugar, A.M., Restrepo, A., Stevens, D.A., Paracoccidioidomycosis in the immunosupressed host: Report of a case and review of the literature (1984) American Review Respiratory Diseases, 129, pp. 340-342. , O primeiro relato de caso de associação de PCM e TransplanteValle, A.C., Asprigliano Filho, F., Moreira, J.S., Wanke, B., Clinical and endoscopic findings in the mucosae of the upper respiratory and digestive tracts in post-treatment follow-up of paracoccidioidomycosis patients (1995) Revista Instituto Medicina Tropical São Paulo, 37, pp. 407-413Zavascki, A.P., Bienardt, J.C., Severo, L.C., Paracoccidioidomycosis in organ transplant recipient: Case report (2004) Revista Instituto Medicina Tropical São Paulo, 46, pp. 279-281Guerreiro, C.A.M., Chuluc, S.S.D., Branchini, M.L.M., A new treatment for large cerebral paracocidioidomycosis (1987) Arquivos de Neuropsiquiatria, 45, pp. 419-423Marques, S., (1998) Paracoccidioidomciose. Tratamento Com Itraconazol. Resultados Obtidos Após Longo Prazo de Seguimento, , Tese de Livre-Docência, Faculdade de Medicina de BotucatuMarques, S.A., Dillon, N.L., Franco, M.F., Habermann, M.C., Lastoria, J.C., Stolf, H.O., Marcondes, J., Cavariani, M.R., Paracoccidioidomycosis: A comparative study of the evolutionary serologic, clinical and radiologic results for patients treated with ketoconazole or amphotericin B plus sulfonamides (1985) Mycopathologia, 89, pp. 19-23Naranjo, M.S., Trujillo, M., Munera, M.I., Restrepo, P., Gómez, I., Restrepo, A., Treatment of paracoccidioidomycosis with itraconazol (1990) Journal Medical Veterinary Mycology, 28, pp. 67-76Queiroz-Telles, F., Tratamento da Paracoccidioidomicose (2005) Tratado de Infectologia, 3 a Edição, pp. 1395-1402. , Foccacia R (ed) Atheneu Editora, São Paulo, Uma atualização recente sobre a terapêutica da paracoccidioidomicoseShikanai-Yasuda, M.A., Higaki, Y., Del Negro, G.B., Ho Joo, S., Vaccari, M.E., Benard, G., Gryschek, R.C.B., Amato Neto, V., Randomized therapeutic trial with itraconazole, ketoconazole and sulfadiazine in paracoccidioidomycosis (2002) Medical Mycology, 40, pp. 411-417Shikanai-Yasuda, M.A., Pharmacological management of paracoccidioidomycosis (2005) Expert Opinion Pharmacotherapy, 6, pp. 385-397. , Uma revisão recente sobre a terapêutica da paracoccidioidomicoseValle, A.C.F., Wanke, B., Wanke, N., Peixoto, T.C., Perez, M., Tratamento da paracoccidioidomicose. Estudo retrospectivo de 500 casos. 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