Universidade de Pernambuco

About: Universidade de Pernambuco is a education organization based out in Recife, Brazil. It is known for research contribution in the topics: Population & Artificial neural network. The organization has 6147 authors who have published 6948 publications receiving 73648 citations.

Effects of climate change on sugarcane production in the state of Paraíba (Brazil): a panel data approach (1990-2015)

Abstract: Climate change is one of the most relevant challenges faced by contemporary societies. The effects of climate variability emphasize the agricultural vulnerability of a location, especially through the dependence of agriculture on climatic factors. This work analyzed the impacts of climatic elements on sugarcane production for municipalities of the state of Paraiba, Brazil, from 1990 to 2015. We investigated how the behavior of climatic elements influenced each mesoregion. Through the production function, a regression with panel data was estimated using the pooled, fixed, and random effects models. To verify which model was most appropriate, the Chow, Hausman, Breusch-Pagan, and Wooldridge tests were performed. According to the tests, the most suitable model was the pooled model. The results showed the impacts of climatic parameters on sugarcane production in the municipalities of Paraiba state, Brazil. Rainfall was positively correlated with production, whereas the temperature negatively influenced production. A heterogeneous response of the impacts on the mesoregions was noted, with the municipalities belonging to the mesoregion of Mata Paraibana having a higher probability of producing sugarcane than other mesoregions.

A multicenter study of biopsied oral and maxillofacial lesions in a Brazilian pediatric population.

Abstract: The aim of this study was to investigate the prevalence of oral and maxillofacial lesions among children from representative regions of Brazil. A retrospective descriptive study was conducted. Biopsy records comprising the period from 2000 to 2015 were obtained from the archives of three Brazilian oral pathology referral centers. A total of 32,506 biopsy specimens were analyzed, and specimens from 1,706 children aged 0-12 years were selected. Gender, age, anatomical location and histopathological diagnosis were evaluated. Descriptive statistics was carried out. Likelihood ratio tests were used to evaluate the association between the categorical variables. The level of significance was set at 0.05. The post-hoc test was used to identify the subgroups that significantly differed from one another, and the Bonferroni correction was applied. A total of 1,706 oral and maxillofacial lesions were diagnosed in pediatric patients, including 51.9% girls. Oral mucocele was the most prevalent reactive/inflammatory lesion (64%). The most commonly affected sites were the lips (34.5%) and mandible (19.9%). A significant association was observed between age and the group of lesions of the oral cavity (p < 0.001), and between age and anatomical location (p < 0.001). Pediatric oral and maxillofacial lesions were frequent and showed wide diversity, with the prevalence of mucocele. Knowledge of oral lesions is important for pediatric dentists worldwide, since it provides accurate data for the diagnosis and oral health of children.

Follow-up of skin lesions during the evolution of COVID-19: a case report.

Abstract: The disease caused by the new coronavirus (COVID-19) has many systemic manifestations affecting the upper airways, lungs, gastrointestinal tract and inducing hematological repercussions. With the evolution of the pandemic, skin lesions were observed. However, there is little information about the evolution of the lesions at this moment. The authors report a case of a patient who had more than one exposure to the coronavirus during the evolution of the disease and manifested different types of edematous lesions. The lesions started in the prodromal period and changed their presentation and localization during the evolution of COVID-19. The lesions regressed quickly with the use of corticoid cream and antihistamine. Viral skin lesions are frequent causes of exanthema. However, viral etiology is not always investigated in acute urticarial and atypical erythematous-edematous conditions. The immunological basis of acute urticaria has points in common with COVID-19, justifying the appearance of lesions. Investigation of viral etiology should always be remembered in acute urticarial and edematous conditions.

The Impact of Chronic Periodontitis on Quality of Life in Brazilian Subjects

Abstract: Adresa za dopisivanje Prof. Renata Cimoes Zavod za protetiku i oralnu te facijalnu kirurgiju Federalnog sveucilista u Pernambucu Rua Guedes Pereira 114/302, Casa Amarela, Recife-PE, Brazil. 52060-150. Telefon/telefax: (55) 81 33047292 renata.cimoes@globo.com Sažetak Svrha: Istraživanja utjecaja oralnog zdravlja na kvalitetu života koriste se mnogim indeksima kvalitete života. Zadatak ove analize bio je procijeniti vezu parodontitisa i kvalitete života na uzorku pacijenata s parodontitisom. Materijal i nacini: Ukupno 302 pacijenta s blagim, umjerenim i teskim parodontitisom odgovorilo je na pitanja u upitniku kojim su se ispitivale sociolosko-ekonomske varijable (dob, spol, skolovanje, bracno stanje te prihod) te na upitnik OHQoL-UK-a (United Kingdom Oral Health-Related Quality of Life). Cilj je bio procijeniti utjecaj parodontitisa na kvalitetu života. Rezultati: Parodontitis ima velik utjecaj na kvalitetu života, sa statisticki znatnim razlikama kad je rijec o jedenju, izgledu, opcem zdravlju, osmijehu te sociolosko-ekonomskom statusu. Vrijednosti OHQoL-UK-a pokazale su povezanost sa spolom i prihodom kucanstva (p<0,05). Statisticki velika povezanost bila je između stupnja parodontitisa i vrijednosti OHQoL-UK-a (p<0,05), no niže vrijednosti kvalitete života bile su cesce kod pojedinaca s težim oblicima kronicnog parodontitisa. Zakljucak: Ovo istraživanje o utjecaju parodontitisa na kvalitetu života otkrilo je da su negativni aspekti cesci kod pojedinaca s teskim kronicnim parodontitisom, sto upucuje na samopercepciju pacijenata kad je rijec o zdravlju parodontalnih tkiva. Kljucne rijeci oralno zdravlje; kvaliteta života; parodontalne bolesti; parodontitis. 1 Poslijediplomski student Federalnog sveucilista u Pernambucu, Brazil Post graduate student, Federal University of Pernambuco, Brazil. 2 Zavod za oralnu medicinu Sveucilista u Pernambucu, Brazil Department of Oral Medicine, University of Pernambuco, Brazil. 3 Zavod za protetiku i oralnu te facijalnu kirurgiju Federalnog sveucilista u Pernambucu, Brazil Department of Prosthesis and Oral and Facial Surgery, Federal University of Pernambuco, Brazil.

The Emerging Web of Social Machines

Abstract: We define a notion of social machine and envisage an algebra that can describe networks of such. To start with, social machines are defined as tuples of input, output, processes, constraints, state, requests and responses, apart from defining the machines themselves, we define their connectors and conditionals that can be used to describe the interactions between any number of machines in a multitude of ways, as a means to represent real machines interacting in the real web, such as Twitter, Twitter running on top of Amazon AWS, mashups built using Twitter and, obviously, other social machines. This work is not a theoretical paper as yet, but, in more than one sense, we think we have found a way to describe web based information systems and are starting to work on what could be a practical way of dealing with the complexity of this emerging web of social machines that is all around us.