RESUMO
This article describes a dataset of images depicting the monthly wood formation of Anthocephalus macrophyllus throughout the year. The images were obtained from cross-sectional stem sections of the tree starting from January, February, March, April, May, June, July, August, September, October, November, and December 2021. The image capture process was conducted at the Nano Imaging-Advanced Research Laboratory, IPB University, using the Keyence VHX-7000 digital microscope with a magnification of 20x. Each image was in JPG format with dimensions of 2880 × 2160, providing a comprehensive overview of wood formation each month. The pinning process resulted in distinct marks in both the bark and wood. In the bark, damage and healing due to injuries are clearly visible. Similarly, in the wood section, the wood formation area was clearly evident. The dataset on wood formation based on the application of pinning provides an interesting image analysis for observing wood formation in tropical regions. The data generated from different locations and climates can serve as comparative data for observing wood formation in other species.
RESUMO
Antecedentes: La evaluación de la actividad docente llevada a cabo por la opinión de los estudiantes es un proceso que ha tenido su desarrollo en el Programa Académico de Odontología desde hace aproximadamente diez años. Este tipo de evaluación tiene su origen formal en la década de 1920 del siglo pasado en universidades de Europa y de Estados Unidos. Objetivo: Analizar los resultados del desempeño docente según una encuesta realizada a los estudiantes del Programa Académico de Odontología entre 2005 y 2007, y determinar si existe diferencia significativa en el desempeño docente según la categoría y las áreas de formación del programa. Método: Se hizo un estudio descriptivo de corte transversal, con los cuestionarios de evaluación de la docencia realizados por los estudiantes del Programa Académico de Odontología de la Universidad del Valle entre los años 2005 a 2007.Resultados: Se evaluaron 474 profesores en total. El promedio durante los cinco semestres evaluados para los profesores fue de 4.4. Se encontró que en cuatro de los cinco semestres analizados hay diferencias significativas en los resultados de la evaluación por los estudiantes en la variable categoría docente. Además, que no existen diferencias significativas en la evaluación por los estudiantes en el área de formación del Programa Académico.
Background: Teaching activity evaluation as a result of students opinion is a process that has been developing in the Dentist Academic Program for approximately ten years. This kind of evaluation has its formal origin in American and European universities during the 1920´s. Objective: To analyze the results of the teachers performance trends according to the inquiries undertaken by the Dentist Academic Program students of the Universidad del Valle from 2005 to 2007, and to determine if there are significant differences in the teachers evaluation results according to academic ranks and program formation areas.Method: A descriptive transversal study was carried out, with teaching evaluation questionnaires undertaken by students of the Dentist Academic Program of the Universidad del Valle during 2005 and 2007. Results: A total of 474 teachers were evaluated. The average results during the five semesters evaluated for the teachers were 4.4. It was found that in four of the five semesters analyzed do exist significant differences in the results of the evaluation by the students at the level of teachers academic ranks. Additionally, there were no significant differences in the results of the students evaluation for the Academic Program Areas.
Assuntos
Universidades , Docentes de Odontologia , Avaliação de Recursos Humanos em Saúde , Desenvolvimento de PessoalRESUMO
Several experimental studies showed that the application of small amounts of electric current to bone stimulated osteogenesis at the site of the cathode and suggested that electrical currents promote osseointegration around dental implants. The purpose of this study was to determine the effect of direct microcurrent to endosseous titanium implants placed in bone defects. The right and left 2nd, 3rd and 4th mandibular premolars in ten mongrel dogs (15Kg of weight) were extracted. One monthe later, Ti-machined screw type implants(3.8 mm diameter x 8.5 mm length, AVANA(R), Ostem) were placed in surgically created circumferential defect area(width 5mm, depth 4mm). The implants were divided into three groups according to the treatment modalities: Control group- implants without electrical stimulation; Experimental group I- implants with allogenic demineralized freeze dried bone grafting; and Experimental group IIimplants allogenic demineralized freeze dried bone grafting and electric stimulation. The animals were sacrificed in the 4th and 8th week after implant placement and un-decalcified specimens were prepared for histological and histometrical evaluation of bone-implant contact ratio (BIC) and bone formation area ratio (BFA) in defect area. Some specimens at 8 weeks after implantation were used for removal torque testing. Histologically, there was connective tissue infiltration in the coronal part of defect area in control and the experimental group I, whereas direct bone contact was found in the experimental group II without connective tissue invasion. Average BIC ratios at 4 weeks of healing were 60.1% in the experimental group II, 47.4% in the experimental group I and 42.7% in the control. Average BIC ratios at 8 weeks after implantation were 67.6% in the experimental group II, 55.9% in the experimental group I and 54.6% in the control. The average BFA ratio was 84.0% in the experimental group II, 71.8% in the experimental group I and 58.8% in the control at 4 weeks, and the BFA ratios were 89.6% in the experimental group II, 81.4% in the experimental group I and 70.5% in the control at 8 weeks after implantation. The experimental group II showed also significantly greater BIC and BFA ratios compared to the control and the experimental group I (p<0.05). The removal torque values at 8 weeks after implantation were 56 Ncm in the experimental group II, 49 Ncm in the experimental group I and 43 Ncm in the control. There was a statistically significant difference among 3 groups (p<0.05). These results suggest that electrical stimulation improve and accelerate bone healing around endosseous titanium implants in bone defect.
