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Search Results: 1 - 10 of 4549 matches for " Lucia Bortolini "
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Effects of Water Distribution Uniformity on Waxy Corn (Zea mays L.) Yield: Preliminary Results  [PDF]
Lucia Bortolini, Marco Martello
Journal of Water Resource and Protection (JWARP) , 2014, DOI: 10.4236/jwarp.2014.611098
Abstract:

To face climatic changes, the increase of frequency and severity of droughts, and economic development pressures, Water Management Institutions point at the necessity of water conserving. A sustainable demand-led approach is the most viable option, focusing on achieving more efficient irrigation practices instead of less sustainable expansion of supply. The aim of this work is to investigate on some aspects of the rational water management for the irrigation of corn in order to evaluate the actual possibility of introduction of drip irrigation systems on the Venetian Plain. Trials were carried out on a farm located in Isola della Scala (Verona, Italy) in an area of about 13 ha (12 ha with a drip irrigation system and 1 ha with a solid-set sprinkler system); the effects of the performance of the two systems on waxy corn yield were considered. In particular, water distribution uniformity, water use efficiency, and yield performance of irrigation systems were evaluated. DUlq and CU coefficients for distribution uniformity and IWUe and WUEb indexes for water use efficiency were calculated. To visualize and better analyze the distribution uniformity, the crop yield and the efficiency parameters, ArcGIS 10 (ESRI?) with IDW interpolation were used to create maps. First results show a good water uniformity distribution in the drip irrigation system but only with a careful and proper design of the entire system. As regards the water use efficiency, drip irrigation values are lower than those of sprinkler irrigation (-46% for IWUe and -25% for WUEb), probably due to different irrigation management and water volumes used: in fact, drip irrigation was scheduled every three days, while only supplemental operations were done for sprinkler irrigation. No statistical correlation was found between application rate and yield for both

Influence of the trajectory angle and nozzle height from the ground on water distribution radial curve of a sprinkler
Dario Friso,Lucia Bortolini
Journal of Agricultural Engineering , 2012, DOI: 10.4081/jae.2012.e4
Abstract: In order to evaluate the effects of the variation of two factors of the working condition, the trajectory angle and the nozzle height from the ground, on the water distribution radial curve of a sprinkler, a mathematical model, able to elaborate with a very good accuracy the size spectrum of droplets generated by a nozzle starting from experimental water distribution radial curves, was used and applied in reversed form. In a previous paper, 37 dimensional droplet spectra were obtained, generated by four sprinklers under varying conditions of operating pressure and nozzle size, but with a single value of trajectory angle and a single value of the nozzle height from the ground level. The application of the mathematical model to the 37 dimensional spectra of the droplets has led to new water distribution radial curves on varying the trajectory angle and the nozzle height. The evaluation of these curves, along with original and experimental ones, has been made using the uniformity of distribution, by means of Christiansen's coefficient CU. Increasing values of pressure and nozzle size provide the best CU. This is applied to all heights of the nozzle from the ground and to almost all trajectory angle values. In all cases, different nozzle heights do not show significant differences in CU values. This also occurred in the comparison of three different trajectory angles, unless the larger diameter and lower height of the nozzle where the CU coefficient gets worse with decreasing the trajectory. The evaluation of the new water distribution radial curves was also made in relation to the produced radius of throw R (m), and it was found that R is positively influenced by all the variables involved. Considering this relationship, two monomial type equations (one for nozzle discharge up to 120 dm3/min and radius of throw less than 30 m and one for nozzle discharge above 120 dm3/min and higher throw radii) were found that can predict R compared to the discharge of the nozzle, the operating pressure, the trajectory angle, and the height of the nozzle from the ground level. The comparison between the calculated and actual values of R shows a relative error, for all sprinklers and all operating conditions, respectively equal to 6.9% in the first case and 4.1% in the second case.
Diversidade sexual e de gênero na escola - Uma perspectiva Intercultural e Interrelacional Diversidade sexual e de gênero na escola
Alexandre Bortolini
Revista Espa?o Acadêmico , 2011,
Abstract: A coexistência de diferentes atores sociais e constru es culturais no interior da escola nos faz pensar sobre os processos de intera o que se d o nesse contexto de rela es sociais. Diferentes correntes vêm produzindo teorias e categoriza es que nos ajudam a pensar essas rela es que envolvem igualdade, desigualdade e diferen a. A idéia aqui é tentar pensar sobre a diversidade sexual e de gênero na escola numa perspectiva relacional, problematizando essencializa es identitárias, entendendo essa quest o como indissociável dos debates que hoje povoam esse campo mais amplo e trazendo n o só os(as) autores(as) que trabalham com gênero e sexualidade, mas também as contribui es das discuss es sobre cultura e interculturalidade.
Resposta ao trabalho de Kent e Santos: "'Os charruas vivem' nos Gaúchos: a vida social de uma pesquisa de 'resgate' genético de uma etnia indígena extinta no Sul do Brasil"
Bortolini, Maria Cátira;
Horizontes Antropológicos , 2012, DOI: 10.1590/S0104-71832012000100016
Abstract: human actions, including scientific research, are structured in individual and collective contexts. kent and santos's paper considered that in a particular scenario, but when they consider this fact they also give opportunity to interpretive actions. the most important is that the authors draw attention to emerging areas of the biological sciences, whose results could not only assist in understanding the dynamics involved in "doing science", but also as how human actions may be far from being understood only within a cultural-reductionist context. in this way, the authors introduce more elements to the debate on the need to persist, and the legitimacy of the barriers that separate biological anthropology, in which human genetics is inserted, and sociocultural anthropology.
Orienta??o nutricional do paciente com deficiência de ferro
Bortolini, Gisele A.;Fisberg, Mauro;
Revista Brasileira de Hematologia e Hemoterapia , 2010, DOI: 10.1590/S1516-84842010005000070
Abstract: iron deficiency occurs when nutritional iron reserves are used up mainly as a result of a negative balance between intake and requirements. when iron deficiency is severe, the patient evolves with iron deficiency anaemia. replacement of iron reserves is normally by means of a medicinal supplement. one low cost alternative that does not present unwanted side effects is nutritional education which aims at quantitatively and qualitatively improving the consumption of foods and thus provide a healthy diet. the current study presents nutritional guidelines both for the prevention and treatment of iron deficiency anaemia. it is important that an evaluation of dietary intake is made and that dietary counseling is followed to assist treatment and to change eating habits, thereby preventing the recurrence of iron deficiency. the most vulnerable groups for iron deficiency warrant special attention, and include children, pregnant women and women of childbearing age.
BRICS, a Multi-Centre “Legal Network”?  [PDF]
Lucia Scaffardi
Beijing Law Review (BLR) , 2014, DOI: 10.4236/blr.2014.52013
Abstract:

The paper analyzes the phenomenon of the BRICS group and its transformation into BRICs. From the first Summit, whose final declarations were mainly centered on economic, financial and commercial themes, the group attention has broadened its horizons, as to encompass health, agriculture, environment, international relations. The BRICS working method seems to suggest a new pattern of inter-state relations, based on peer-to-peer cooperation, experiences sharing and “soft” policy transfer. Given the difficult classification of this new “entity”, the author suggests considering it more as a network, where there is not a singular hegemony power, but where the relevance of the different countries varies according to the issue discussed in the Summit.

Inclusion Compounds of Dehydrocholic Acid with Solvents
Marco Fogagnolo,Giancarlo Fantin,Olga Bortolini
International Journal of Molecular Sciences , 2007, DOI: 10.3390/i8070662
Abstract: The host-guest inclusion of various organic solvents within dehydrocholic acid has been studied and the selectivity of enclathration determined by competition experiments.
Impacto de orienta??o dietética sistemática no primeiro ano de vida nas prevalências de anemia e deficiência de ferro aos 12-16 meses
Bortolini, Gisele Ane;Vitolo, Márcia Regina;
Jornal de Pediatria , 2012, DOI: 0.2223/JPED.2156
Abstract: objective: to evaluate the impact that a program based on maternal dietary counseling covering breastfeeding and healthy complementary feeding had on the prevalence of iron deficiency, anemia and iron deficiency anemia in children aged 12 to 16 months. methods: newborn infants were randomized at birth to an intervention or a control group. mothers in the intervention group received home visits during the children’s first year of life on a monthly basis up to 6 months, and at 8, 10 and 12 months. the mothers in the control group received visits for data collection when children reached 6 and 12 months. all children were visited at ages between 12 and 16 months and 24-hour dietary recalls and hemoglobin and ferritin tests were conducted. results: there was no evidence that the intervention had an effect on anemia incidence, which was 66.5% in the intervention group and 61.8% in the control group. there was also no evidence of any difference between the groups in the prevalence of iron deficiency anemia or of iron deficiency. however, a higher percentage of children in the intervention group were exclusively breastfed at 4 and 6 months, and breastfed at 6 and 12 months. intervention group children also consumed more meat and were fed diets with better iron bioavailability and consumed less cow’s milk and calcium than children from the control group. conclusion: this intervention had no effect on the prevalence of anemia, iron deficiency or iron deficiency anemia. clinical trial registry identification number: nct00629629.
Rela??o entre deficiência de ferro e anemia em crian?as de até 4 anos de idade
Bortolini, Gisele Ane;Vitolo, Márcia Regina;
Jornal de Pediatria , 2010, DOI: 10.1590/S0021-75572010000600007
Abstract: objective: to evaluate the prevalence of anemia, iron deficiency and iron deficiency anemia in a cohort of children. methods: a cohort study nested in a randomized field trial. children were recruited at birth at the maternity unit of the only public hospital in the city of s?o leopoldo, southern brazil. this study assessed iron status (hemoglobin and serum ferritin) when children were 12-16 months old and later at the age of 3-4 years. anemia was defined as hemoglobin concentration < 11.0 g/dl; iron deficiency as serum ferritin < 15.0 μg/l; and iron deficiency anemia as hemoglobin concentration < 11.0 g/dl with iron deficiency. results: at age 12-16 months, the overall prevalence of anemia, iron deficiency and iron deficiency anemia was 63.7, 90.3 and 58.8%, respectively. the values for age group 3-4 years were 38.1, 16.1 and 7.4%, respectively. at age 12-16 months, 95% of anemia cases were associated with iron deficiency against only 19.3% of cases at age 3-4 years. conclusions: iron deficiency was the main cause of anemia in the second year of life, but not at age 3-4 years. thus, we point out that anemia in preschool children may have other causes and deserves careful assessment.
Biodisponibilidade do ferro como fator de prote??o contra anemia entre crian?as de 12 a 16 meses
Vitolo, Márcia Regina;Bortolini, Gisele Ane;
Jornal de Pediatria , 2007, DOI: 10.2223/JPED.1577
Abstract: objective: this study investigates the nutritional factors that determine the absence of anemia in infants from families with a low socioeconomic background submitted to a nutrition intervention program, as well as iron intake according to recommendations. methods: the study included 369 children from a cohort of inhabitants of s?o leopoldo, state of rio grande do sul, brazil, who were randomized at birth into an intervention group and into a control group. the intervention group had nutritional guidance in the first year of life, with monthly follow-up home visits, whereas the control group was visited at 6 and 12 months, without nutritional intervention. at the end of the first year of life, a 24-hour recall was used. anemia was diagnosed based on a hemoglobin level less than 11 g/dl. the children's diets were classified according to iron bioavailability. results: the prevalence of anemia amounted to 63.7% in this study. the proportion of children with adequate iron intake relative to the recommendations was statistically higher in the nonanemic group (26.8%) than in the anemic one (17.7%). nonanemic children had a greater intake of iron (p = 0.019), vitamin c (p = 0.001), energy density at dinner (p = 0.006), iron density per 1,000 calories (p = 0.045); and 16.3% of them had a diet with high iron bioavailability (p = 0.002). conclusions: a diet with high iron bioavailability protects children from anemia and can be used as an intervention measure by basic health services and by the municipal departments of children's education.
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