Xanxerê, Brazil
Xanxerê, Brazil

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PubMed | SOEBRAS, Vitoria, UNISA and UNOESC
Type: Journal Article | Journal: Journal of maxillofacial and oral surgery | Year: 2015

Anorganic bovine xenogenous grafts show the best performance as bone substitutes in implantodontics. Bio-Oss is the worlds most widely used and investigated anorganic bone substitute. This article compares two anorganic bovine bone substitutes (Bone-Fill and Gen-Ox anorganic) with Bio-Oss.Eight New Zealand rabbits were implanted with 4 titanium cylinders randomly filled with Bio-Oss, Bone-Fill, Gen-Ox anorganic or a blood clot. Four animals were sacrificed after 8weeks; 12weeks later, the remaining four were sacrificed. The contents of the cylinders were removed, cut and stained with HE before they were evaluated with an optical microscope. The samples were submitted to histomorphometry for analysis.The bone formation with Bio-Oss at 8weeks was 8.43mm(2); at 12weeks, it was 9.32mm(2). The bone formation with Bone-Fill at 8weeks was 7.24mm(2); at 12weeks, it was 9.01mm(2). The bone formation with Gen-Ox anorganic at 8weeks was 2.78mm(2); at 12weeks, it was 3.02mm(2). The bone formation with the blood clot at 8weeks was 0.65mm(2); at 12weeks, it was 0.63mm(2).Following this model, Bone-Fill was comparable to Bio-Oss and superior to Gen-Ox and blood clot.

The objective of this research was to evaluate and compare sampling methods Fixed Area, Bitterlich, Strand and Prodan, in fragments of Mixed Ombrophyllous Forest, in Lebon Régis, SC state, Brazil. The forest inventory applies a simple random sampling. At each sampling unit, we evaluated every tree with diameter at breast height greater than or equal to 5 cm. For the method of Fixed Area we used dimensions of 10 × 50 m (500 m2), for Bitterlich and Strand we adopted Basal Area Factor equal to 2, and for Prodan we evaluated the 6 nearest trees. Only the Fixed Area method presented sampling sufficiency, however, it presented highest execution time in the field as well, with results significantly different from the other sampling methods. The relative efficiency was higher for Strand, but without statistical significance compare to the other methods. There were no significant differences between the number of trees and basal area per hectare, estimated by the different sampling methods.

This study aimed to test different statistical models for fitting site index curves and check if the anamorphic curves generated were satisfactory to classify the loblolly pine (Pinus taeda L.) plantations in the region of Caçador, Santa Catarina State, Brazil. The data of dominant height (hdom) used in this study were obtained from permanent plots of fixed area and rectangular shape, with areas of 500 and 625 square meters. The plots were distributed randomly in the stands to cover the largest possible variability of productivity. The selection of the best equation was made by the following fitting and precision statistics: adjusted coefficient of determination (R2 aj), standard error of estimation (Syx), standard error of estimate in percentage (Syx%) and graphical distribution of the residuals in percentage. The monomolecular model showed the best performance, so it was chosen for the construction of the site index curves by guide curve method. After construction of the site index curves, the stability of the curves was also tested, which indicated the anamorphic pattern of the curves generated by the equation for site classification of loblolly pine plantations in the region of Caçador, Santa Catarina State, Brazil.

PubMed | UNOESC, CAPES Foundation, Federal University of Paraná, Federal University of Santa Maria and 3 more.
Type: | Journal: Environmental pollution (Barking, Essex : 1987) | Year: 2017

Spreading livestock manure as fertilizer on farmlands is a widespread practice. It represents the major source of heavy metal(loid)s (HM) input in agricultural soils. Since zinc (Zn) is present at high concentrations in manure, it poses special environmental concerns related to phytotoxicity, groundwater contamination, and introduction in the food chain. Therefore, investigations on the fate and behavior of manure-borne Zn, when it enters the soil environment, are necessary to predict the environmental effects. Nevertheless, long-term field studies assessing Zn speciation in the organic waste matrix, as well as within the soil after manure application, are lacking. This study was designed to fill this gap. Using SEM-EDS and XAS analysis, we reported the following new results: (i) ZnS made up 100% of the Zn speciation in the pig slurry (the highest proportion of ZnS ever observed in organic waste); and (ii) ZnS aggregates were about 1-m diameter (the smallest particle size ever reported in pig slurry). Moreover, the pig slurry containing ZnS was spread on the soil over an 11-year period, totaling 22 applications, and the resulting Zn speciation within the amended soil was analyzed. Surprisingly, ZnS, i.e. the only species responsible for a nearly 2-fold increase in the Zn concentration within the amended soil, was not detected in this soil. Based on SEM-EDS and XAS observations, we put forward the hypothesis that Zn in the pig slurry consisted of nano-sized ZnS crystallites that further aggregated. The low stability of ZnS nanoparticles within oxic and complex environments such as the studied soil was the key explanation for the radical change in pig slurry-borne Zn speciation after long-term amendments.

Grapeggia M.,SEBRAE | Lezana A.G.R.,Federal University of Santa Catarina | Ortigara A.A.,UNOESC | dos Santos P.C.F.,UFAL
Producao | Year: 2011

The article's objective is to describe which factors affecting to the success and/or the mortality of micro and small companies in the State of Santa Catarina are. It was elaborated, therefore, a field study with a sample of companies registered on Junta Comercial do Estado de SC from 2000 to 2004. The data were analyzed in quality and quantity method under two perspectives: i) Relevant factors on enterprise's history (real), which highest averages grades were given to the product/market knowledge, business focus, identification of opportunities, organization and product' suitability; and ii) factors that the entrepeneur believes to be the most important for the success (ideal), which highest averages grades were given to the organization, the relationship among the partners, the knowledge about the market, the business focus and the identification of oportunities.

Cabral S.H.L.,Regional University of Blumenau | Nunes A.S.,Federal University of Santa Catarina | Januario M.,University of West Santa Catarina | Farina G.,UNOESC
Proceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012 | Year: 2012

This work presents the performance of the well-known program ATP-Alternative Transient Program applied to the simulation of continuous windings of transformer under the incidence of a voltage surge. The motivation for this analysis lies in the fact that once ATP is widely applied for circuit simulation in several conditions, it is expected that it can also be applicable to this problem that is of significant importance for transformer designer. If so, thanks to wide ATP availability designers will have available an easy and user friendly tool for helping in their designs. Basis of analysis is in new experimental data obtained by the authors as well as some other data presented in previously published paper, in which experimental data have also validated applicability of the TLM- Transmission Line Modeling Method for the same problem, known as a classical one for concerns of voltage insulation for transformer designers. © 2012 IEEE.

The occurrence of IBR, BVD and LEP on 195 farms in the western region of the state of Santa Catarina, Brazil, is discussed. Serum samples (842 samples) were analyzed by the Virology Sector of the Universidade Federal de Santa Maria (UFSM) and of the Universidade Estadual Paulista (UNESP). Results showed that 57.54% of serum samples were positive for IBR; 28.5% were positive for BVD and 31.67% were positive for LEP. The study detected positive serology for the two diseases even in herds where the occurrence of reproductive problems was low or non-existent. The above suggested that the occurrence or not of the characteristic clinical signs of infection are related to the general management techniques on each farm. Results show that the above-mentioned diseases are disseminated in cattle herds in the western region of Santa Catarina and require the urgent implantation of management practices such as control during acquisition and admittance of new animals, care in artificial insemination, periodical tests, adoption of efficient vaccines timetables and control of rodents and wild animals so that maximum reproductive efficiency of the herd could be achieved.

Jost B.S.,University of West Santa Catarina | Hilgemberg E.,UNOESC | Rodrigues E.B.,University of West Santa Catarina | Daniotti A.F.,University of West Santa Catarina | Bonamigo E.L.,University of West Santa Catarina
Arquivos Brasileiros de Oftalmologia | Year: 2010

Purpose: To evaluate the prevalence of diabetic retinopathy in patients affected by type 2 diabetes mellitus in the city of Luzerna (SC). Methods: Cross-sectional study including all individuals with type 2 diabetes mellitus, all ages, both genders, residents in the city of Luzerna. The work analyzed database of 5,350 people from two Family Health Programs, where all city residents are registered. A total of 136 people with type 2 diabetes mellitus were encountered and 120 completed data gathering to the end, resulting in an inclusion rate of 89%. All patients underwent ophthalmologic examination for diagnosis of retinopathy and visual acuity examination. Patients underwent a household questionnaire to evaluate the demographic profile, duration of disease and type of treatment performed. The presence of risk factors for diabetic retinopathy: hypercholesterolemia, fasting plasma glucose, glycosylated hemoglobin and hypertension were also assessed. Results: The prevalence of diabetic retinopathy was 38.4% in the studied population. Moreover, a direct relationship was established between diabetic retinopathy and diabetes mellitus evolution time (p<0.0001), renal damage (p<0.0001), insulin use (p<0.0001) and glycosylated hemoglobin change (p=0.003). There was no correlation between diabetic retinopathy and hypertension (p=0.184), hypercholesterolemia (LDL p=0.745, TGC=0.163, CT=0.528), gender (p=0.299) and origin (p=0.889). Conclusion: The prevalence of diabetic retinopathy found among the patients with type 2 diabetes mellitus was of 38.4%. This result confirms the need for greater attention by public services in prevention and counseling patients with type 2 diabetes, in order to achieve early diagnosis and disease prevention.

Depending on the cultivar, the use of desiccants in the preharvest can favor maintenance of physiological quality. The objective of the study was to assess the physiological quality of soybean seeds as due to the use of apreharvest desiccant and desiccation time in two harvests (2011/12 and 2012/13). The treatments were five soybean cultivars, two growth stages of application, a control (without desiccant application), and three desiccants (glufosinate-ammonium, carfentrazone-ethyl and paraquat) (2011/12 harvest). In the 2012/13 harvest the carfentrazone-ethyl desiccant was replaced by diquat. The physiological quality of seeds was assessed by the percentage of viability and vigor (cold test, tetrazolium test and accelerated aging test). In 2011/12 harvest, there was an early harvest in six days with the use of glufosinate-ammonium and paraquat desiccants, when desiccation was done in stage R7.1, with maintenance of seed quality; however it was dependent on the cultivar. In the 2012/13 harvest there was no early harvesting due to the presence of rain in the preharvest and the use of desiccation did not affect the physiological quality of the seeds either. Cultivar NA5909 RG was more tolerant to remaining in the cultivation environment and maintained higher viability than 90% and greater vigor of 71% by the cold test compared to cultivar BMX Turbo (2011/12 harvest). It is concluded that desiccation can be a viable alternative to the soybean early harvesting, but it depends on the cultivar, the time of desiccation, the active principle of the desiccant and the absence of rain in preharvest. © 2015, Sociedade Brasileira da Ciencia das Plantas Daninha. All rights reserved.

Azevedo C.R.,UNOESC | Boos C.F.,Biomedical Engineering Institute | De Azevedo F.M.,Biomedical Engineering Institute
2nd International Conference on Electrical Engineering and Information and Communication Technology, iCEEiCT 2015 | Year: 2015

Analysis of long-term electroencephalogram signals (EEG) is an important tool to clinically confirm the diagnosis of epilepsy. The characteristic electrographic events that represent epilepsy in the analysis of EEG are called epileptiform events (spikes and sharp waves). The process of EEG record analysis is performed by highly trained specialists, which identify the spikes and sharp waves throughout EEG records with minimum duration of 24 hours. Since epileptiform events have typical amplitude around 200μV and duration between 20 and 200ms the analysis of the EEG records is considered very time-consuming and tiring for the experts. Several studies for automatic detection and classification of epileptiform events have been proposed but there is still no system with widespread use and a performance that meets the needs of the specialists. The Self-Organizing Maps of Kohonen (SOM) are an unsupervised neural network algorithm that consists of two layers of neurons that has been successfully used in a wide variety of applications. The objective of this study is to test the feasibility of using Self-Organizing Maps of Kohonen for automatic classification of epileptiform events and non-epileptiform events in EEG signals. Different maps of Kohonen were developed and tested. After simulations, the results were evaluated according to classical performance indexes and the best network achieved 98.7% sensitivity, 91.9% specificity, 90.08% selectivity and 94.8% efficiency. Comparing the results of other SOM studies we obtained sensitivity 9-12% higher and selectivity 12-39% higher than the analyzed studies. Furthermore, a comparison with the results of a previous study that uses the same EEG signal database showed that the overall efficiency was quite similar (only 1% lower). © 2015 IEEE.

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