115 research outputs found
On some properties of quasi-MV algebras and √′ quasi-MV algebras. Part II
No full textThe present paper is a sequel to Paoli F, Ledda A, Giuntini R, Freytes H (On some properties of QMV algebras and √′ QMV algebras, submitted). We provide two representation results for quasi-MV algebras in terms of MV algebras enriched with additional structure; we investigate the lattices of subvarieties and subquasivarieties of quasi-MV algebras; we show that quasi-MV algebras, as well as cartesian and flat √′ quasi-MV algebras, have the amalgamation property. © Springer-Verlag 2007.We gratefully acknowledge the precious information and insights we gathered from conversations or e-mail exchanges with Roberto Giuntini and Danica Jakubikova-Studenovska. We are especially indebted to Matthew Spinks for his extensive and detailed comments on a preliminary draft of the paper. The first author is partially supported by Grants MTM2004-03101 and TIN2004-07933-C03-02 from the Spanish Ministerio de Educación y Ciencia and Grant 2001SGR-00017 from the Generalitat de CatalunyaPeer Reviewe
Generalized coherence vector applied to coherence transformations and quantifiers
No full textOne of the main problems in any quantum resource theory is the characterization of the conversions between resources by means of the free operations of the theory. In this work we advance on this characterization within the quantum coherence resource theory by introducing the generalized coherence vector of an arbitrary quantum state. The generalized coherence vector is a probability vector that can be interpreted as a concave roof extension of the pure states coherence vector. We show that it completely characterizes the notions of being incoherent, as well as being maximally coherent. Moreover, using this notion and the majorization relation, we obtain a necessary condition for the conversion of general quantum states by means of incoherent operations. These results generalize the necessary conditions of conversions for pure states given in the literature, and show that the tools of the majorization lattice are useful also in the general case. Finally, we introduce a family of coherence quantifiers by considering concave and symmetric functions applied to the generalized coherence vector. We compare this proposal with the convex roof measure of coherence and others quantifiers given in the literature.Fil: Bosyk, Gustavo Martin. Università degli Studi di Cagliari; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina. Universidad Centro de Altos Estudios en Ciencias Exactas; ArgentinaFil: Losada, Marcelo Adrián. Università degli Studi di Cagliari; Italia. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Massri, Cesar Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Investigaciones Matemáticas "Luis A. Santaló". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Matemáticas "Luis A. Santaló"; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Departamento de Matemáticas; Argentina. Universidad Centro de Altos Estudios en Ciencias Exactas; ArgentinaFil: Freytes Solari, Hector Carlos. Università degli Studi di Cagliari; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sergioli, Giuseppe. Università degli Studi di Cagliari; Itali
The Contextual Character of Modal Interpretations of Quantum Mechanics
No full textThis item has been retired at the request of its author
Habilidades sociales presentes en estudiantes de psicología de la Fundación Universitaria del Área Andina Valledupar-Cesar
No full text: figuras ; 28 cm.Esta investigación tiene como objetivo central identificar las habilidades sociales en estudiantes de psicología de la Fundación Universitaria del Área Andina Valledupar-Cesar, se trata de un estudio cuantitativo de alcance descriptivo con un muestreo probabilístico simple de 102 estudiantes a los cuales se les aplicó una ficha sociodemográfica y la lista de chequeo de habilidades sociales de Goldstein que mide en niveles las Primeras Habilidades Sociales, Habilidades Sociales Avanzadas, Habilidades Relacionadas con los Sentimientos, Habilidades Alternativas a la Agresión, Habilidades para hacer frente al estrés y Habilidades de Planificación. Los datos recolectados se analizaron mediante estadística simple. En los resultados se estableció que el 88% de los estudiantes presenta un nivel medio bajo en las habilidades sociales primarias, el 83% de los estudiantes tienen las habilidades sociales avanzadas bajas, el 53% de las habilidades relacionadas con los sentimientos están media baja, en las habilidades alternativas el 99% presenta media baja, el 69% de las habilidades que hacen frente al estrés se encuentra media baja, y el 91% de las habilidades de planificación aparecen media baja. Así mismo se logró determinar que según el semestre cursado no hay mayor diferencia en el nivel de las habilidades sociales, lo cual lleva a concluir que el estudio de la carrera de psicología no promueve la adquisición de habilidades sociales y que en este caso los alumnos son apenas medio habilidosos ante situaciones de estrés.Consideraciones generales.-- Pregunta de investigación.-- Objetivo de investigación.-- Justificación.-- Marco referencial.-- Metodología.-- Resultados.-- Conclusiones.-- Recomendaciones.-- Bibliografía.PregradoPsicólogoPsicologí
Interventions for preventing oral mucositis for patients with cancer receiving treatment
No full textBackground Treatment of cancer is increasingly more effective but is associated with short and long term side effects. Oral side effects remain a major source of illness despite the use of a variety of agents to prevent them. One of these side effects is oral mucositis (mouth ulcers). Objectives To evaluate the effectiveness of prophylactic agents for oral mucositis in patients with cancer receiving treatment, compared with other potentially active interventions, placebo or no treatment. Search strategy Electronic searches of Cochrane Oral Health Group and PaPaS Trials Registers (to 1 June 2010), CENTRAL (The Cochrane Library 2010, Issue 2), MEDLINE via OVID (1950 to 1 June 2010), EMBASE via OVID (1980 to 1 June 2010), CINAHL via EBSCO (1980 to 1 June 2010), CANCERLIT via PubMed (1950 to 1 June 2010), OpenSIGLE (1980 to 2005) and LILACS via the Virtual Health Library (1980 to 1 June 2010) were undertaken. Reference lists from relevant articles were searched and the authors of eligible trials were contacted to identify trials and obtain additional information. Selection criteria Randomised controlled trials of interventions to prevent oral mucositis in patients receiving treatment for cancer. Data collection and analysis Information regarding methods, participants, interventions, outcome measures, results and risk of bias were independently extracted, in duplicate, by two review authors. Authors were contacted for further details where these were unclear. The Cochrane Collaboration statistical guidelines were followed and risk ratios calculated using random-effects models. Main results A total of 131 studies with 10,514 randomised participants are now included. Nine interventions, where there was more than one trial in the meta-analysis, showed some statistically significant evidence of a benefit (albeit sometimes weak) for either preventing or reducing the severity of mucositis, compared to either a placebo or no treatment. These nine interventions were: allopurinol, aloe vera, amifostine, cryotherapy, glutamine (intravenous), honey, keratinocyte growth factor, laser, and polymixin/tobramycin/amphotericin (PTA) antibiotic pastille/paste. Authors' conclusions Nine interventions were found to have some benefit with regard to preventing or reducing the severity of mucositis associated with cancer treatment. The strength of the evidence was variable and implications for practice include consideration that benefits may be specific for certain cancer types and treatment. There is a need for further well designed, and conducted trials with sufficient numbers of participants to perform subgroup analyses by type of disease and chemotherapeutic agent. This review is published as a Cochrane Review in the Cochrane Database of Systematic Reviews 2010, Issue 12. Cochrane Reviews are regularly updated as new evidence emerges and in response to comments and criticisms, and the Cochrane Database of Systematic Reviews should be consulted for the most recent version of the Review.</p
OVERTONE SPECTROSCOPY IN TRANS-FORMIC ACID
No full textD. Hurtmans, F. Herregodts, M. Herman, J. Li\'{e}vin, A. A. Kachanov and A. Campargue, J. Chem. Phys. 113, 1535 (2000).Author Institution: Laboratoire de Chimie Physique Mol\'{e}culaire C. P. 160/09, Universit\'{e} Libre de Bruxelles; Laboratoire de spectrom\'{e}trie Physique (CNRS, UMR C5588), Universit\'{e} Joseph Fourier de GrenobleVibrational assignments of fundamental, combination and overtone bands in the main isotopomer of gaseous trans-formic acid are reported from spectra either newly or recorded using high-resolution Fourier transform spectroscopy and intracavity laser absorption spectroscopy. A total of 62 bands, with 32 newly reported ones, were observed from the lowest energy band at up to at . Among these bands, 43 were firmly assigned, and 16 tentatively. Effective vibrational constants were obtained. The normal modes of vibrations were further characterized using ab initio calculations providing fundamental band intensities and normal mode nuclear displacements. The analysis of the rotational structure in the first CH stretch overtone band () and in the second OH stretch overtone band () was performed. Some rotational information could also be obtained for and two close-lying bands, extracted from strong overlapping formic acid dimer bands
Allogeneic transplantation provides durable remission in a subset of DLBCL patients relapsing after autologous transplantation
No full textPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/133605/1/bjh14046.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/133605/2/bjh14046_am.pd
Is Edentulism Associated with Lower Bacteremia and Transplant-Associated Toxicities in Patients with Multiple Myeloma?
No full textAntitumor activity of DAB389 IL-2 fusion toxin in mycosis fungoides
No full textBackground: DAB389 IL-2 is a novel fusion toxin that retargets the cytotoxic A-chain of diphtheria toxin to interleukin-2 (IL-2) receptor–expressing tumors. Objective: The purpose of this phase I trial was to study the toxicity, maximum tolerated dose, and clinical efficacy of DAB389 IL-2 in IL-2 receptor expressing lymphoproliferative malignancies, including cutaneous T-cell lymphoma.
Methods: DAB389 IL-2 was administered intravenously daily for 5 days every 3 weeks. Dose escalation occurred between patient groups. Patients were monitored for laboratory and clinical toxicity, kinetics, immune response, and clinical efficacy.
Results: Thirty-five patients with cutaneous T-cell lymphoma (including 30 patients with mycosis fungoides) were treated. Previously, conventional therapy had not worked for 34 of the patients. Thirteen patients (37%) achieved an objective response, including a complete response in five patients (14%). Complete response was achieved in patients with extensive erythroderma and tumor stage mycosis fungoides. Adverse events consisted of reversible fever/chills, hypotension, nausea/vomiting, and elevation of hepatic transaminase. Doses of less than 31 μg/kg per day were well tolerated. Clinical responses were observed at all dose levels.
Conclusion: DAB389 IL-2 is well tolerated at doses of less than 31 μg/kg per day, and it induced clinical responses in previously treated mycosis fungoides, providing evidence for the antitumor activity of this molecule. (J Am Acad Dermatol 1998;39:63-73.
A Prospective, Randomized Clinical Trial of Cryotherapy Vs. Supersaturated Calcium Phosphate Rinses Vs. Saline Rinses for the Prevention of Oral Mucositis in Patients with Multiple Myeloma (MM) Receiving High-Dose Melphalan (HDM) and Autotransplantation
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