Abstract:The aim of this in vitro study was to determine the antibacterial activity of photodynamic therapy with PACT 300 on an experimental bacterial biofilm in the root canal system consisting of Candida albicans and Enterococcus faecalis. Method and material: The study was performed on 22 single root extracted teeth which were prepared with rotary nickel-titanium endodontic files. As control group were used 2 teeth (n=2) and the others (n=20) were divided into 2 groups according to the root canal disinfection method: 1st group - passive irrigation, 2nd group - photodynamic therapy with PACT 300. Results: After microbiological analysis no Candida albicans colonies were observed in PACT 300 photodynamic therapy and the percentage of Enterococcus faecalis was reduced to 99%.
Abstract:In Brazil, in the last decades, the proportion of deliveries performed among adolescents is increasing. It is observed that even with the reduction of the fertility rate in the 70\'s, the number of pregnancies in adolescence has increased greatly in recent years. Thus, this study aimed to identify the main factors associated with pregnancy in adolescents according to the nurses\' perception. This is a qualitative study with a descriptive approach, developed in the Family Health Strategy of a Brazilian municipality. Five nurses participated in the study. A semi-structured script was used to collect the data and, for the analysis of participants\' discourses, the Content Analysis technique was used. It was evidenced that the main factors associated with the high number of pregnant adolescents in the municipality are low income, lack of information about sexuality and fertilization, inadequate use of knowledge about contraception, mainly on the use of contraceptives and condoms.
Abstract:The paper provides a diagnosis of the fragile position of developing countries in the knowledge economy and proposes recommendations to enhance it. The paper opted for: to measure the intensity of the contribution of knowledge to the economic performance of developing countries, a Knowledge Economy Index (KEI) has been developed to classify industries according to the knowledge content (high, medium and low). We present a number of theoretical, making use of econometric techniques developed to justify the role of knowledge production and ownership of skills in the development of activities that generate high added value. We constated that: The Knowledge Economy Index (KEI) follows the following form: ??EI??(Developing Countries)=0.43*HK+0.16*(R&D)+0.43*TFP ??EI??(Industrialized Countries)=0.32*HK+0.30*(R&D)+0.38*TFP The success of a strategy of building the knowledge economy will depend on a number of conditions which require, among other things, a deepening of reforms to the pillars of economy, development of a modern infrastructure science and technology, skills development and intensification of scientific research, a favorable regulatory framework for economic and technological change and respect the rules of intellectual property.
Abstract:This study aimed to analyze the training of nursing technicians for the Unified Health System. This is a descriptive cross-sectional study with a quantitative approach developed with students of the technical nursing course at a professional training school. There was a predominance of females, between 18 and 23 years old, single and with Complete High School. Most students consider the curricular structure appropriate to the SUS, however, a significant percentage of students stated that the theoretical knowledge about the SUS is not applicable in the practical field. It was verified that the technical professionals should be focused on the continuous qualification and the development of competencies, in this way, the curricular structure, the arrangement of the clinicals, the articulation of the subjects, and the teaching methodologies must be in balance to offer to the student the best training, and to allocate the health area quality professionals.
Abstract:In this work, circular slices of carrots were dried at temperatures of 40, 50, 60 and 70 °C. The carrot slices were cut with average thickness of 4.5 mm. A numerical solution was proposed for the diffusion equation in Cartesian coordinates (one-dimensional case), in order to describe the drying process. The diffusion equation was discretized assuming the variation of the effective diffusivity and the thickness of the slices. Six empirical equations found in the literature were analyzed to study the drying rate. A period of induction was observed at the four temperatures studied. These periods were considerable, especially at temperatures of 40 and 50 °C. The proposed diffusive model described well the periods of decreasing rate, with good statistical indicators for all fits.
Abstract:The aim of our study was to assess clinically the posterior composite restorations` wear in patients with extreme masticatory forces. Total of 30 direct restorations by Gradia Direct Posterior (GC Corporation Tokyo Japan) were evaluated in Class I and Class II caries lesions in preselected patients (mean age 25 years) with clinical and anamnestic signs of bruxing and clenching habits at 6-month and 12-month follow-ups. The gypsum replicas of the restored teeth were prepared immediately after restorative procedure (baseline) and at every recall. All replicas were digitally scanned by 3ShapeTrios. The statistical analysis was performed by SPSS 17.0, p<0.05. No statistically significant differences were evaluated in restorations` wear between the initial state and the 6th month recall (?2 = 464,333), between the 6th and the 12th month recall (?2 = 409,833), and between baseline and 12th month recall (?2 = 455,833).
Abstract:An innovative data mining approach is presented and applied to investigate the climatic causes of extreme climatic events. Our approach comprises two main steps of knowledge extraction applied successively in order to reduce the difficulty of the original data set. The goal is to identify a much smaller subset of climatic variables that might still be able to describe or even predict the extreme events. The first step applies a class comparison technique. The second step consists of a decision tree learning algorithm used as a predictive model to map the set of statistically most significant climate variables identified in the previous step to classes of rainfall strength. The methodology is employed to the study the climatic causes of two extreme events occurred in India the last decade: the Chennai 2015 extreme rainfall tragedy and the Tamilnadu(except Chennai) deficiency of 2016. In both cases, our results are in good agreement with analyses published in the literature.
Abstract:In the article the necessity of increasing the quality of all investment projects in drafting and implementing projects, the lack of adequate scientifically-theoretical and practical application of the risk analysis forachieving the desired outcome and the impossibility of determining its relevance, the formation of an investment strategy and ensuring that financial efficiency and stability at the stage of implementation are identified as a more difficult challenge for investment-project activities and impossibility of financial support for decision-making in the decision-making process has been emphasized, and justified that all these are related to the adoption of relevant management decisions. It was proved that, one of the main factors of this process is the necessity to develop risk-based measures and risk management on a mathematical basis.\nDuring decision making and control process based on the assessment method of investment projects it was emphasized that the use of procedures was based on the qualitative research of causes and results, and the negative impact of the internal factors on the basis of the value-added and the quantitative measure of how much deviation occurred or could be achieved from the purpose. It has been established that the internal structure of the project should make such optimally modifiable that it is reasonable to minimize the discrepancies within the limits of the allowable expenses and the importance of risk management has been analyzed as an instrument.\nStrategic development of the investment project, development of its analysis and evaluation, as well as the relevance of preparation of recommendations for the application and use of this approach was emphasized.
Abstract:Pseudoaneurysms of the deep femoral artery (DFA) are not uncommon and are seen after wide range injuries that include blunt, penetrating and iatrogenic trauma. When present they are large, slowly growing false aneurysms that can present with a variety of complication from infections and septic embolization to rupture and compartment syndrome. The surgical approach to the DFA can be either direct anterior or lateral approach. The anterior approach to DFA is described for both elective and emergency surgery however; the lateral approach to DFA is not yet described for Pseudoaneurysm of the DFA. We report the first case of pseudo-aneurysm of the DFA in which lateral approach was used in an emergency situation. Our case is of a large pseudo-aneurysm complicated by an arterio-venous fistula due to a gunshot injury in a patient who had initial internal fixation of fracture of the upper shaft of the femur. Due to the anatomical position of the complex Pseudoaneurysm arterio-venous fistula [PSA-AVF] at the junction of the third (3rd) perforator of the deep femoral artery and the deep femoral artery itself, and the absence of endovascular options in our hospital, open surgery using a direct lateral approach to the distal DFA lesion was performed. The pseudo-aneurysm arterio-venous fistula complex was successfully resected via this approach which offered many advantages over the traditional direct anterior approach to the DFA.
Abstract:A novel Lipolytic Micrococcus strain isolated from dry contaminated habitat in Jeddah, Saudi Arabia. Lipolytic, or lipase producing, bacteria are a promising focus for future study, because lipases employed in a transesterification reaction cause the production of biodiesel. This study examines various aspects of biofuel production employing lipolytic bacteria isolated from soil containing waste products, or organic feedstock, specifically the isolation of a total of nine bacterial strains from different locations in Jeddah, Saudi Arabia, including one novel lipolytic bacteria. Characterization of the strains, including their growth pattern, lipolytic transesterification activity, and identification by gene sequencing is conducted. The findings obtained by employing next generation sequencing of 16S rDNA reveal that the maximum lipolytic activity in one bacterial strain, ‘2030’, characterize this as a highly efficient strain. The identification results evidence strain 2030 as Micrococcus luteus (M. luteus) strain 2030 (accession number- MK300598). A phylogenetic analysis of M. luteus strain 2030 is conducted with similar 47-strain sequences available in the National Center for Biotechnology Information GenBank database, employing MEGA 6 software.