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Search Results: 1 - 10 of 462143 matches for " A. Leone "
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Autobiografía como autofiguración: Estrategias discursivas del Yo y cuestiones de género
Lucía De Leone
Mora (Buenos Aires) , 2009,
Abstract:
Predicting protein functions with message passing algorithms
M. Leone,A. Pagnani
Quantitative Biology , 2004, DOI: 10.1093/bioinformatics/bth491
Abstract: Motivation: In the last few years a growing interest in biology has been shifting towards the problem of optimal information extraction from the huge amount of data generated via large scale and high-throughput techniques. One of the most relevant issues has recently become that of correctly and reliably predicting the functions of observed but still functionally undetermined proteins starting from information coming from the network of co-observed proteins of known functions. Method: The method proposed in this article is based on a message passing algorithm known as Belief Propagation, which takes as input the network of proteins physical interactions and a catalog of known proteins functions, and returns the probabilities for each unclassified protein of having one chosen function. The implementation of the algorithm allows for fast on-line analysis, and can be easily generalized to more complex graph topologies taking into account hyper-graphs, {\em i.e.} complexes of more than two interacting proteins.
On the near infrared variability of chemically peculiar stars
F. A. Catalano,F. Leone
Physics , 1998,
Abstract: Some CP stars have recently been discovered by Catalano et al. (1991) to be variable also in the near infrared, although with smaller amplitudes than in the visible. Hence an observational campaign was started in which the infrared light variability of a number of CP2 and CP4 stars has been investigated at the ESO-La Silla Observatory in the bands J, H, and K. As a general result, infrared variations show the same behavior in all three filters but amplitudes are smaller than in the visible.
Passive Smoking and Infectious Disease: A Serious Hazard for Cardiovascular System  [PDF]
Aurelio Leone
International Journal of Clinical Medicine (IJCM) , 2011, DOI: 10.4236/ijcm.2011.25090
Abstract: Exposure to passive smoking is usually associated with heavy changes in both function and structure of the cardiovascular system at different levels: coronary circulation, heart metabolism, myocardial muscle. These changes may be transient but may have characteristics of irreversibility. Major determinant of cardiovascular alterations is hypoxia due to tobacco products of the environment although a large number of alterations affect immune t-cells and antibody response. All infectious diseases which involve cardiovascular system, including some tropical patterns, particularly Chagas disease, are adversely influenced as a consequence of a continuous although irregular exposure to passive smoking, which worsens the degree of cardiac muscle alterations at different levels like myocardium, coronary arteries and both these structures. Therefore, exposure to passive smoking must be avoided for those individuals suffering from infectious diseases of the heart whatever factor can be responsible.
Una poética del nombre: los "comienzos" de María Moreno hacia mediados de los a?os 80 en el contexto cultural argentino
Leone, Lucía María de;
Cadernos Pagu , 2011, DOI: 10.1590/S0104-83332011000100009
Abstract: this paper analyses the newspaper alfonsina and the supplement "la mujer" of tiempo argentino, two contemporary argentinean feminist publications, directed by maria moreno. both arise at the beginning of the eighties, marked by the decline of military dictatorship and the political, institutional and cultural revival of democratic transition. in that context, moreno chooses to challenge in both journals - which claimed to be forerunners with respect to the traditions of journalism for women - her own "beginnings". they involve "necessary" negotiations relative to the same feminine subject that at the time seemed to have to either splinter or ideologically resort to gender reversibility in order to authorize her "entry into writing".
Alfonsina Storni: mujeres, Modernidad y literatura
Lucía María De Leone
Mora (Buenos Aires) , 2008,
Abstract:
La ansiedad autorial. Formación de la autoría femenina en América Latina: los textos autobiográficos
Lucía María De Leone
Mora (Buenos Aires) , 2007,
Abstract:
Problemas oftalmológicos mais freqüentes e desenvolvimento visual do pré-termo extremo
Graziano, Rosa Maria;Leone, Cléa Rodrigues;
Jornal de Pediatria , 2005, DOI: 10.1590/S0021-75572005000200012
Abstract: objectives: to review the concepts of visual development and the major ocular abnormalities in preterm newborns. to emphasize the importance of preventive ophthalmologic examination and early treatment of ocular disorders. sources of data: a review of published data. summary of findings: vision is one of the most important senses in the normal physical and cognitive development of children. schoolchildren who were born preterm have impaired visual, motor and cognitive functions when compared to those of children born full term. this is more a consequence of central nervous system immaturity than of localized injuries to ocular and/ or cortical structures. the literature pinpoints retinopathy of prematurity, strabismus and refractive errors as the main ophthalmologic alterations resulting from prematurity. retinopathy of prematurity is one of the main causes of preventable blindness in childhood. it is estimated that on average 562 children become blind each year in brazil, which is a very high socioeconomic cost to result from a treatable disease. children with visual deficiencies may be helped by programs of early visual stimulation in order to promote their environmental integration. conclusions: the recommendation is that every preterm newborn weighing less than 1,500 g and/or with a gestational age of less than 32 weeks should be monitored until complete retinal vascularization and that the first examination should be performed between the fourth and sixth weeks of life. we recommend ophthalmologic outpatients follow-up of all preterm newborns until two years of life with examinations twice yearly, and then, annually, in order to prevent amblyopia.
Simulation of deacidification process by molecular distillation of deodorizer distillate
Marttinello,M. A.; Leone,I.; Pramparo,M.;
Latin American applied research , 2008,
Abstract: a computer program has been developed to simulate the deacidification of sunflower deodorizer distillate. the developed mathematical model is based on momentum, mass and energy balances. the langmuir-knudsen constitutive equation was used in order to represent the kinetics of evaporation and condensation. physical and transport properties have been evaluated using correlations, which are functions of temperature and composition. the obtained partial differential equation system was solved by means of the crank-nicholson technique, and the calculation programs employed were developed and debugged using matlab 7.1. the mathematical model was used to analyze the phenomena that take place during the molecular distillation process, and it also allowed studying the influence of operating variables on the performance of the process. in this investigation, we analyzed the influence of the operating temperature on purity and yield of the components. trials at three evaporating temperatures (110 oc, 130 oc, and 140 oc) were carried out in a kdl4 (uic) molecular distillation apparatus to verify the model.
The role of serum and urinary urea in the evaluation of enteral protein intake in adequate and small-for-gestational-age very low birth weight infants
Darcie, Silvana;Leone, Cléa Rodrigues;
Sao Paulo Medical Journal , 2005, DOI: 10.1590/S1516-31802005000600002
Abstract: context and objective: very low birth weight (vlbw) infants have special nutritional needs. there is a current tendency to individualize their protein needs. the objective of this study was to determine the suitability of serum and urinary urea as indicators for protein intake in adequate-for-gestational-age (aga) and small-for-gestational-age (sga) vlbw infants. design and setting: prospective study in the nursery attached to the maternity ward of the "prof. pedro de alcantara" children's institute, hospital das clínicas, department of pediatrics, faculdade de medicina da universidade de s?o paulo, brazil. methods: seventy-two vlbw infants (mean protein intake = 3.7 mg/kg/day) were enrolled in a prospective cohort study in two groups: aga (n = 34) and sga (n = 38). blood samples, six-hour urine (6hur) collections and urine sample tests (stur) were obtained for urea and creatinine assays at three and five weeks of life. statistical analysis: student's t test, pearson correlation and linear regression (p < 0.05). results: there were no differences between groups for serum urea, 6hur and stur, or between two assessments within each group. serum urea correlated with 6hur in both aga and sga, and to stur in sga; 6hur correlated with stur in both aga and sga. there was no correlation between protein intake and serum or urine urea. conclusions: serum and urinary urea did not reflect protein intake when mean intakes of 3.7 g/kg/day were used. sample tests of urinary urea can be as reliable as urea from urine collected over longer periods.
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