310 research outputs found
Double photoionization of alkaline earth atoms and photoelectron spectroscopy of reactive intermediates
No full textDouble photoionization (DPI) of the outermost s"2 electrons of Ca and Sr atoms in the vapour phase has been studied by measurements of the angular correlation between the directions of emission of the two electrons. This process has been studied using monochromatic radiation produced by the second generation Daresbury synchrotron radiation source (SRS). The extremely low cross sections of the DPI processes were enhanced by using incident radiation at wavelengths corresponding to autoionizing resonances of the neutral species. Measurements of DPI for Ca atoms have also been collected at a non resonant photon energy using the third generation Elettra SRS in Trieste. Discrepancies between the present experimental results and the limited existing theory are found for the non resonant process. Two-step double photoionization via intermediate excited ionic states has been studied in both Ca and Sr atoms. Measurements of angular distributions and angular correlations between the directions of emission of inner shell photoelectrons and the associated Auger electrons allowed detailed characterizations of the photoionization processes. Valence photoelectron spectroscopy of the short-lived reactive intermediates O_2(a"1#DELTA#_g), OH and OD has been performed using the Daresbury SRS. Autoionizing resonances have been assigned to members of series of Rydberg states converging towards higher ionic limits. Measurements of angular distributions of photoelectrons allowed further insight into the photoionization processes to be obtained. Suggestions are presented for further experimental investigations. (author)SIGLEAvailable from British Library Document Supply Centre-DSC:DXN040244 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
La città metropolitana - Numero speciale di 'Quaderni. Documenti sulla manutenzione urbana di Venezia"
No full textOmalizumab (Xolair TM) for IgE-mediated diseases other than allergic asthma: Preliminary experience
No full textA scleroderma-like cutaneous syndrome associated with a marked Th2-type immune response occurring after a prosthetic joint implant.
No full textAbstract: A scleroderma-like cutaneous syndrome, occurring after implantation
of a prosthetic knee joint in an elderly woman, is reported. This case
did not seem to typically fit into any of the known scleroderma-like disorders
of the skin described to date. The patient was shown to be sensitized to
metals contained in the prosthesis and to mount a Th2-type immune response
concomitantly with development of skin fibrosis. In particular, eosinophilia,
markedly elevated serum IgE levels, in vitro spontaneous production of
interleukin (IL)-4 by T lymphocytes, and elevated serum levels of Th2
cytokines (namely, IL-4, IL-5, and IL-13) were observed during the acute
phase of illness. Since eosinophils and such Th2 cytokines as IL-13 also have
recognized fibrogenic properties, it is speculated that the pathogenesis of skin
fibrosis in this case could have been the direct and/or indirect consequence
of the coexisting Th2-type immune response
“Estado nutricional pregestacional, peso residual, ingesta energética, fraccionamiento de la dieta, paridad y lactancia materna de mujeres entre el 5º y 7º mes posparto de la ciudad de Córdoba”
No full textFil: Gutierrez, Fanis Micaela. Universidad Nacional de Córdoba. Facultad de Ciencias Medicas. Escuela de Nutrición; Argentina.Fil: Moreyra, Luciana Andrea. Universidad Nacional de Córdoba. Facultad de Ciencias Medicas. Escuela de Nutrición; Argentina.Fil: Rojas Martínez, Camila. Universidad Nacional de Córdoba. Facultad de Ciencias Medicas. Escuela de Nutrición; Argentina.“Estado nutricional pregestacional, peso residual, ingesta energética, fraccionamiento de la dieta, paridad y lactancia materna de mujeres entre el 5º y 7º mes posparto de la ciudad de Córdoba”
Área de Investigación: Nutrición Clínica y Dietoterapia
Autoras: Gutierrez FM, Moreyra LA, Rojas Martínez C, Román MD, Grande MC.
Introducción: Desde la perspectiva psicosocial, el posparto es una etapa de vulnerabilidad para las mujeres e invisibilizado socio-sanitariamente. Algunos aspectos biológicos también importantes en esta etapa son el estado nutricional (IMC pregestacional, retención de peso posparto y dieta), la lactancia y la paridad. Objetivo: Analizar el estado nutricional pregestacional, peso residual, ingesta energética, fraccionamiento de la dieta, paridad y lactancia materna de mujeres de 19 a 45 años que se encuentran entre el 5° y 7° mes posparto en la ciudad de Córdoba en el año 2020. Metodología: Estudio descriptivo, transversal. Se entrevistaron 50 mujeres de 19-45 años, sin patologías crónicas, entre el 5º y 7° mes posparto con un cuestionario autoadministrado y un recordatorio de 24 hs. Los datos se analizaron con los softwares Excel, SARA y Epidat. Resultados: El 56% de las mujeres tenía un estado nutricional pregestacional normopeso, 38% sobrepeso y 6% bajo peso. El 80% de la muestra presentó un peso residual deseable (0 a 4 kg). El 78% de las mujeres brindó lactancia materna completa (LMC). El 12% de las mujeres reportó un fraccionamiento disminuido (6 comidas). El 12% de las mujeres tuvo un consumo energético adecuado. Conclusión: El 70% de las mujeres presentó una ingesta energética baja. El 88% de las mujeres con IMC pregestacional normal que brindaron LMC, presentó valores deseables de peso residual. Los resultados de este trabajo evidencian la importancia de un acompañamiento integral de las mujeres durante el período posparto.
Palabras Claves: posparto - IMC pregestacional - peso residual posparto - ingesta energética - fraccionamientoFil: Gutierrez, Fanis Micaela. Universidad Nacional de Córdoba. Facultad de Ciencias Medicas. Escuela de Nutrición; Argentina.Fil: Moreyra, Luciana Andrea. Universidad Nacional de Córdoba. Facultad de Ciencias Medicas. Escuela de Nutrición; Argentina.Fil: Rojas Martínez, Camila. Universidad Nacional de Córdoba. Facultad de Ciencias Medicas. Escuela de Nutrición; Argentina
Angle resolved photoelectron spectroscopy of O-2(a(1)Delta(g)) with synchrotron radiation
No full textAngular distribution of photoelectrons for the photoionization processes O-2(+)(X (2)Pi(g), upsilon(+) = 0-3) + e(-) <-- O-2(a(1) Delta(g)) + h nu has been studied at the photon energy of 21.22 eV and in the photon energy range 13.8-15.2 eV where the cross-sections for these processes show strong enhancement due to the presence of resonant transitions to a Rydberg state (C (2)Phi(u),3s sigma(g))p (1)Phi(u). It has been found that the plot of the asymmetry parameter, beta, against photon energy shows structure at energies corresponding to O-2(p (1)Phi(u)upsilon(')) <-- O-2(a (1)Delta(g)upsilon " = 0) excitations. The O-2(+)(X (2)Pi(g),upsilon(+)) <-- O-2(a (1)Delta(g),upsilon " = 0) ionizations have also been investigated in the photon energy range 18.0-19.2 eV, where the presence of unassigned resonances was observed in earlier photoelectron spectroscopic work. In this energy range the plot of asymmetry parameter against photon energy also shows resonant structure. Suggestions for the excited states associated with these resonances have been made on the basis of constant-ionic-state spectra recorded at different angles
Omalizumab for difficult-to-treat dermatological conditions: clinical and immunological features from a retrospective real-life experience
No full textAltered constitutive and activation-induced expression of CD95 by B- and T-cells in B-cell chronic lymphocytic leukemia
No full textExpression of CD95, a molecule involved in activation-induced cell death (AICD), might contribute to explain accumulation of leukemic B-cells and functional impairment of T-cells in B-cell chronic lymphocytic leukemia (B-CLL). Therefore, we compared constitutive and activation-induced expression of CD95 and CD69 by B- and T-cells in CLL patients and in healthy donors.Expression of CD95, a molecule involved in activation-induced cell death (AICD), might contribute to explain accumulation of leukemic B-cells and functional impairment of T-cells in B-cell chronic lymphocytic leukemia (B-CLL). Therefore, we compared constitutive and activation-induced expression of CD95 and CD69 by B- and T-cells in CLL patients and in healthy donors
The molecular constants of (CH3I)-C-12 in the ground and nu(6)=1 excited vibrational state
No full textA set of 26 new measurements have been recorded by a Doppler-free double-resonance technique, with a relative accuracy of about 10(-8). These data are combined to previous FTIR measurements to refine the molecular constants of (CH3I)-C-12. All the available literature data have been revisited, a few assignments updated, and some frequencies changed according to new laser standards. A simultaneous fit to all the measurements of infrared, microwave, and radiofrequency transitions produced an improved set of parameters, independent of previously determined constants. (C) 1998 Academic Press
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