De Paulo Rodrigues da Silva V.,Federal University of Campina Grande |
Borges C.J.R.,Faculdade Mauricio de Nassau |
De Albuquerque W.G.,Campus de Pombal
Semina:Ciencias Agrarias | Year: 2014
An accurate estimation of water consumption of cane sugar crop is important for maximum productivity with less investment. The objective of this study was to determine the water requirements of sugar cane grown in tropical environments. The field experiment was carried out in Paraiba state, during the productive cycle of sugar cane crop variety RB 92 579 irrigated by central pivot irrigation (sprinkler) from October 2009 to September 2011. The crop evapotranspiration was obtained based on soil water balance and reference evapotranspiration by Penman-Monteith method (FAO/56), using the data of air temperature, relative humidity, wind speed and solar radiation from Data Collection Platform, next to the experimental site. Soil water moisture was monitored by TDR probes (Frequency Domain Reflectometry), Model PR2/6, Delta-T. The results showed that the crop coefficients values proposed by the FAO for sugar cane are not suitable for tropical regions. The water consumption of sugar cane ranged from 2.6 mm day-1, at initial crop growth stage, to 6.38 mm day-1, with an average of 4.3 mm day-1 for all cycle. Similarly, the crop coefficient ranged from 0.56 to 1.43, with an average of 0.99 for the same development crop growth stages.
de Menezes R.C.E.,Federal University of Alagoas |
de Lira P.I.C.,Federal University of Pernambuco |
Leal V.S.,Federal University of Alagoas |
Oliveira J.S.,Federal University of Pernambuco |
And 4 more authors.
Revista de Saude Publica | Year: 2011
OBJECTIVE: To describe the prevalence of stunting in children under five and identify factors associated. METHODS: Population-based cross-sectional study conducted in 1991, 1997 and 2006 in the state of Pernambuco, northeastern Brazil. The following variables associated with the prevalence of stunting (height-forage < -2 z-score) were studied: socioeconomic condition, maternal and child characteristics, and health care provided. A hierarchical model was used in the multiple logistic regression to assess the impact of explanatory variables on children's stunting. RESULTS: The prevalence of child malnutrition (height-for-age) was reduced by 65% from 1991 to 2006. Socioeconomic variables (per capita family income, maternal education, number of people living in the household and access to consumer goods), maternal height and birth weight were associated with stunting in children under five. CONCLUSIONS: All the determinants studied improved over the study period though not consistently. Despite significant reduction of child malnutrition in Pernambuco there remain differences regarding stunting, and children with better socioeconomic conditions have more favorable outcomes.
Araujo D.D.F.,Federal University of Rio Grande do Norte |
De Almondes K.M.,Faculdade Mauricio de Nassau
Biological Rhythm Research | Year: 2015
The shortcomings of public schools affect the academic performance of the student. Cognitive stimulation using electronic games has shown positive results, especially by improving performance of the visuo-spatial cognitive processes, working memory, and attention. However, variables such as bedtime, sleep duration, and sleep regularity are important factors that can also affect performance at these processes. We aimed to analyze the relationship between intervention with games and cognitive processes in elementary school students, and the role played by sleep in any changes. The sample consisted of 42 students (age: mean = 10.0, SD = 1.5 years) and an experimental group (n = 21, of similar age). The experimental group participated in an intervention using the game Safari, which stimulates working memory; the control group was required to reproduce works of art with the software Paint. The participants completed the Wechsler Intelligence Scale for Children before and after the intervention, and their parents completed a 30-day sleep diary. The results revealed that the performance of the experimental group in visuo-spatial skills and executive skills improved after the intervention, and their performance at Safari increased significantly. The experimental group also showed significant correlations between sleep variables and visuo-spatial ability and attention. Our data showed that the observed improvement in visuo-spatial ability may have been influenced by the measured association between bedtime/sleep duration and performance. © 2015 Taylor & Francis.
De Sousa Melo E.C.,Faculdade Mauricio de Nassau |
Da Silva Aragao M.R.,Federal University of Campina Grande |
Correia M.F.,Federal University of Campina Grande
Revista Brasileira de Meteorologia | Year: 2014
In this work the daily surface wind cycle is investigated focusing on the seasonal variation and the local circulations. The data collected by the automatic station located 25-30 km far from Petrolina and by the conventional station located in the city are used. The results show that the hourly mean wind speeds increase (decrease) during April-May-June (October-November-December) due to the intensification (weakening) of the South Atlantic subtropical high. During the three-month period July-August-September the hourly wind speeds are very close and have their highest intensities, with wind direction in the interval 120-130 degrees. In general, the daily cycle gives evidence of a maximum at 8-9 LT (local time) and two minima, one at 5-6 LT and another at 17-18 LT, in every month. The hodographs of the local wind at both stations show weak local circulations from January to May, a characteristic that may be related to a higher soil moisture content and, as a consequence, to lower values of the sensible heat flux gradient. During the remaining of the year, the dry period, the local circulations are comparatively stronger. The hodographs are irregularly drawn suggesting one local wind regime, in the southeast-northwest direction. The local circulations are stronger at 9 and 18 LT, the times of maximum and minimum wind speeds during the daily cycle, respectively.
Almeida A.C.S.,Federal University of Pernambuco |
Vilela M.A.,University of Pernambuco |
Cavalcanti F.L.S.,Federal University of Pernambuco |
Martins W.M.B.S.,Faculdade Mauricio de Nassau |
And 2 more authors.
Antimicrobial Agents and Chemotherapy | Year: 2012
This work reports the identification of the first case of a KPC-2-producing Pseudomonas putida isolate (PP36) in Brazil. The PP36 isolate was resistant to all the antimicrobials tested except polymyxin B. In addition to the discovered bla KPC-2 gene, genetic analysis showed the presence of a class 1 integron containing the dhfrXVb gene and the new allele arr-6, which codes for resistance to rifampin. These elements were found in an IncFI 65-kb plasmid. Copyright © 2012, American Society for Microbiology. All Rights Reserved.