Adding aerodynamic damping: the wing design for the Third Bosphorus Bridge

This paper is about the design of wing profiles adequate for giving to the Third Bosphorus Brige an additional aerodynamic damping on both vertical bending as well as torsional modes. The additional damping estimate procedure is made through a simplified quasi steady approach. A CFD approach has been used for a preliminary design and optimization of the wing profile and its position over the wind screen at the upwind and downwind location

Development and validation of a coupled numerical model for offshore floating multi-purpose platforms

A multi-purpose platform (MPP) is an offshore system designed to serve the purposes of more than one off-shore industry. Over the past decades, a number of industries have expanded or are expanding, from onshore to offshore locations. In the present work, the MPP proposed in the framework of Blue Growth Farm project is considered. The aim here is to develop and validate a coupled aero-hydro-servo-elastic numerical model, which will be used to predict the dynamic response of the MPP under a wide range of environmental condi-tions. Model test research was conducted to validate the developed numerical model. The model test was carried out in the water basin at Centrale Nantes, employing the Froude scale strategy. An innovative ap-proach to modelling wind load in the experimental environment was proposed and applied. This paper re-ports the up-to-date research outcome of the Blue Growth Farm project - numerical model development and validation

Mother-to-child transmission of human immunodeficiency virus in Italy : temporal trends and determinants of infection

In order to analyse temporal trends in vertical transmission rates of human immunodeficiency virus (HIV) and determinant of congenital HIV infection in Italy, we have considered data from a network of hospitals co-operating in the Italian Collaborative Study on HIV infection in pregnancy, conducted between 1988 and 1995. A total of 1040 women entered the study. The HIV-1 status of the babies was known in 848 cases (81.5%). Transmission rates were highest in the period 1988\u20131991, then tended to decrease and in 1995 the rate was 9.7 per 100 children (this finding, however, was based on only six infected children and the trend was not statistically significant). Considering the overall series, the risk of vertical HIV transmission was higher in women with low CD4 count in pregnancy [odds ratio (OR) <400 versus \u2a7e400 1.8, 95% confidence interval (CI) 1.1\u20132.9]. In comparison with vaginal delivery the risk of transmission was 0.3 (95% CI 0.1\u20130.5) and 0.6 (95% CI 0.3\u20131.2) respectively for elective and emergency delivery. In comparison with women who delivered at term (\u2a7e37 gestation weeks) the OR of HIV infection of the babies for the whole series was 2.2 (95% CI 1.3\u20133.6) in women who delivered preterm. Similar findings emerged when the analysis was conducted considering, separately, subjects observed in the period 1988\u20131991 and 1992\u20131995. The frequency of Caesarean section increased from 26.5% of deliveries in 1988\u20131991 to 36.2% in 1992\u20131995. Consequently, most temporal differences disappeared after standardization for mode of delivery, but the rate in 1995 was still lower than in 1988\u20131994

Travaglio di prova dopo taglio cesareo:quali fattori intervengono nella scelta delle modalit\ue0 del parto? Due esperienze cliniche milanesi a confronto

The frequency of caesarean section is gradually increased over the years. Women that after a caesarean section decide to endure a pregnancy need to discuss with their gynecologist about the way of delivering. In the first part of the thesis are described the factors that may influence the success or failure of trial of labor, contraindications, advantages, disadvantages, both vaginal birth after caesarean section and elective repeat caesarean section. In the second chapter, I dealt with the principal and most feared risk of trial of labor after a prior caesarean delivery: the uterine rupture. The aim of the thesis have been to evaluate the type of information about mode of delivery that the pregnant women after a previous caesarean section received during a following pregnancy; to highlight the factors that influence this choice; to analyze the opinion of the operators that, every day, have to deal with this topic, and to observe any potential differences between two Hospitals in Milan. To reach the goal it has made: - 48 interviews to women during puerperium at the Clinic \u201cLuigi Mangiagalli\u201d and 11 at the Hospital \u201cVittore Buzzi\u201d; - 11 questionnaires compiled by midwives in the Clinic \u201cLuigi Mangiagalli\u201d and 14 at the Hospital \u201cVittore Buzzi\u201d; - 10 questionnaires compiled by doctors of the Clinic \u201cLuigi Mangiagalli\u201d and 10 at the Hospital \u201cVittore Buzzi\u201d. Finally, it can be stated that the major referrers for women that look for this kind of information are gynecologists, even if sometimes it is not scientific evidence based. Professionals words are able to influence the choice of mode of delivery, influencing satisfaction or dissatisfaction of the women. Another important factor in women choices are the previous experiences of labor and the desire to live the experience of vaginal birth

Development and validation of a coupled numerical model for offshore floating multi-purpose platforms

A Multi-Purpose Platform (MPP) is an offshore system designed to serve the purposes of more than one offshore industry. Over the past decades, a number of industries have expanded or are expanding, from onshore to offshore locations. In the present work, the MPP proposed in the framework of Blue Growth Farm project is considered. The aim here is to develop and validate a coupled aero-hydro-servo-elastic numerical model, which will be used to predict the dynamic response of the MPP under a wide range of environmental conditions. Model test research was conducted to validate the developed numerical model. The model test was carried out in the water basin at Centrale Nantes, employing the Froude scale strategy. An innovative approach to modelling wind load in the experimental environment was proposed and applied. This paper reports the up-to-date research outcome of the Blue Growth Farm project - numerical model development and validation