Antioxidant effect of Arrabideae chica (crajiru) extract on oxidative stress in diabetic rats

Objective: This study aimed to investigate the effects of the antioxidant potential of Arrabideae chica (crajiru) extract on oxidative stress in diabetic rats. Methods: Adult Wistar rats (Rattus norvegicus), weighing 238±12g were divided into three groups of six rats each: CN normal untreated control; DIAB+NS diabetic rats treated with normal saline; and diabetic rats treated with crajiru extract, DIAB+CR. The CN and DIAB+NS groups (control groups) received normal saline solution (NS) orally (gavage); rats in the DIAB+CR group received crajiru extract (300 mg/kg) once a day by gavage for 6 weeks. Measurements of urea and creatinine in serum, and kidney tissue catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GPx) were performed. The variables were assessed using the Tukey test, significance p<0.05. Results: All animals survived the experiments. In the CN group, compared with the DIAB+NS group, there was significant difference between the levels of glycemia on the second day of dosing and on the 10th day (p<0.05). No difference was observed on glycemia comparing the 2th and 10th day on the rats of group C+NS (p>0.05). Diabetic animals from DIAB+CR group had a significant reduction in glycemia on 10th day of treatment, comparing the 2nd day (p<0.05). There was a significant reduction in glycemia in the DIAB+CR group, comparing with the DIAB+NS group (p<0.05). There was an increase in urea and creatinine levels in rats DIAB+SN when compared to controls, C+SN (p<0.001). Rats from the DIAB+CR group had a significant reduction in urea and creatinine, compared to the DIAB+NS group (p<0.001). There were no significant differences in urea and creatinine comparing the C+NS and DIAB+CR groups. The rats from the DIAB+NS group had significantly lower levels of CAT, GSH-px and SOD when compared to the normal control rats (p<0.001). In animals from the DIAB+SN group, the levels of these antioxidant enzymes were significantly reduced (p<0.001). The treatment of diabetics with crajiru extract caused a significant increase (p<0.001) in the levels of CAT, GSH-px and SOD, when compared to rats in the BIAB+SN group. Conclusion: The data of the present study confirms that the crajiru extract positively influenced the control of hyperglycemia in diabetic rats. More research is needed to provide a better understanding of the mechanisms of diabetes treatment using crajiru extract and its flavonoids.

The Spheno-Occipital Synchondrosis and Morphometry of Sella Turcica Association with Different Phenotype Factors Related to Ectopic Eye Tooth/Teeth

Objectives: This study investigates the prevalence of Spheno-Occipital Synchondrosis (SOS) and sella turcica morphometry (STM) association with different phenotype factors related to ectopic eye tooth/teeth (EET) using cone beam computed tomography (CBCT) imaging. Methods: This comparative retrospective study analyzed 252 CBCT images. Subjects in the EET group consisted of 197 CBCT images with the phenotype factor in number, i.e., unilateral (13, n = 62; 23, n = 59) or bilateral (1323, n = 76) and matched control (n = 55). SOS and STM were investigated using 3D OnDemand Software. Seven parameters of STM were measured. To test the association X2 used for SOS prevalence, disparities in STM were tested using ANOVA and post hoc Tukey test. Results: The prevalence of unfused SOS was 48.4% and 16.1% in the 1323 and control groups, respectively. Fused SOS prevalence was quite similar in all four groups. Phenotype factor in number, i.e., unilateral 13, 23, or bilateral EET group showed significant disparities in six out of seven parameters (p = 0.044 to p ≥ 0.001). Additionally, phenotype factor in position, i.e., occlusal, buccal, or palatal group showed insignificant disparities (p = 0.463 to p = 1.00). Conclusion: SOS in the ectopic eye tooth group (EETG) was prevalent in the 1323 and buccal position groups. Differing from previous two-dimensional (2D) studies, there were statistically significant disparities in all seven measured variables of STM among control, and three different phenotype factors in numbers were revealed using three-dimensional (3D) CBCT imaging.

Influence of temperature variation on the generation of a photovoltaic system connected to the grid for power generation under field conditions

This experiment aimed to analyze the temperature behavior of photovoltaic modules, with the efficiency of the on-grid photovoltaic system, installed at the State University of West Paraná - UNIOESTE, campus of Cascavel, Paraná. The photovoltaic system consists of two ropes, with a total power of 3.3 kWp. In the first period, it was found that the panel kept clean (Panel 2), during data collection, reached a higher efficiency during the first weeks and practically the same for the last weeks, compared to the dirty panel. Achieve an average efficiency of 13.73% and 14.39%, Panel 1 and Panel 2, respectively. For the second period, the average efficiency of both panels, with inclinations of 21° and 26°, was very close, being 14.25% (Panel 1) and 14.24% (Panel 2). The third period showed a difference in the efficiency of the panels, 13.7% (Panel 1) and 14.54% (Panel 2), with inclinations of 21° and 18°, respectively. The test of means identified that there was a difference between the levels of soiling of the modules, as well as their inclinations of 21° and 18°. As for the 21° and 26° inclinations, there was no significant difference, according to the Tukey Test at 5% significance.

An investigation of athletes' anxiety of catching Covid-19 and their motivation levels in terms of some variables

This study aims to examine the anxiety levels and motivation levels of athletes about catching covid-19 in terms of some variables. The sample group of the study consists of 204 women (51%) and 196 men (49%) in total, 400 athletes aged 18 and over, who are licensed in various branches. In the study, "Athletes' Anxiety of Catching New Type Coronavirus (Covid 19) Anxiety Scale (AAOCNTCAS)" developed by Tekkurşun Demir et al. (2020) and "Sport-Specific Achievement Motivation Scale" (SSAMS) developed by Willis (1982) and adapted in Turkish by Tiryaki and Gödelek (1997) are utilized. The Skewness-Kurtosis test was used to determine whether the data showed a normal distribution. As a result, t-test and One-Way Anova tests were used to analyze the data. The Post Hoc Tukey test was used for multiple comparisons. As a result of the research, A statistically significant difference was found between the demographic characteristics of the athletes’ anxiety about catching Covid-19 and their achievement motivation by, age, gender, education status, mother's education status, monthly income, athlete license category and total licensed sports year, while no statistically significant was found on paternal education status and type of sport. As a result of the findings, it is predicted that the anxiety levels of catching coronavirus may decrease by providing the necessary motivation to the athletes.

The Influence of Problem-Solving Learning Model and Student Learning Motivation on Mathematical Reasoning Ability

This study aims to determine whether the mathematical reasoning ability of students who are taught by the problem-solving learning model is effective in terms of the learning motivation of class VII students of SMP Negeri 4 Gorontalo. This type of research is Quasi Experiment with Treatment by level 2 x 2 design using two-way analysis test and Tukey test. The results showed that the mathematical reasoning ability of students who had intrinsic learning motivation in problem-solving learning was 84.13 and the mathematical reasoning ability of students who had intrinsic learning motivation in conventional learning was 67.21. This can also be proven through a test with a significant level of 5% and df = 127 indicating t > t(1,127)(0.05). Obtained t = 4.232 for a = 0.05 obtained t(1,127)(0.05) = 2.80 Thus, the reasoning abilities of students who have intrinsic learning motivation are taught by problem-solving learning more effectively than the reasoning abilities of students who have intrinsic learning motivation are taught by conventional learning.

The Influence of Problem-Solving Learning Model and Student Learning Motivation on Mathematical Reasoning Ability

This study aims to determine whether the mathematical reasoning ability of students who are taught by the problem-solving learning model is effective in terms of the learning motivation of class VII students of SMP Negeri 4 Gorontalo. This type of research is Quasi Experiment with Treatment by level 2 x 2 design using two-way analysis test and Tukey test. The results showed that the mathematical reasoning ability of students who had intrinsic learning motivation in problem-solving learning was 84.13 and the mathematical reasoning ability of students who had intrinsic learning motivation in conventional learning was 67.21. This can also be proven through a test with a significant level of 5% and df = 127 indicating t > t(1,127)(0.05). Obtained t = 4.232 for a = 0.05 obtained t(1,127)(0.05) = 2.80 Thus, the reasoning abilities of students who have intrinsic learning motivation are taught by problem-solving learning more effectively than the reasoning abilities of students who have intrinsic learning motivation are taught by conventional learning.

THE EFFECTIVENESS OF COMPOMER AND GIC AGAINST PREVENTION IN ENAMEL DEMINERALIZATION

Background: Several studies showed that fluoride interferes in the dynamics involved in the development of caries and could present an antimicrobial effect or provide demineralization inhibition or dental remineralization. The development of fluoride-releasing materials can contribute to a preventive of demineralization. GIC and Compomer are restorative materials containing fluoride which can prevent demineralization. Purpose: To analyze the effectiveness of Compomer and GIC against prevention in enamel demineralization. Method: The cavities were made on 18 bovine teeth which grouped into 3 groups, each group consisting of 6 bovine teeth. After the restorative procedures, the teeth were submitted to demineralization and remineralization cycling during 14 days. The sections of the teeth were examined under scanning electron microscope after undergoing pH cycling. The data were analyzed using the Kruskal-Wallis and Tukey Test (p<0.05). Results: GIC group showed the lowest lesion depth of demineralization (10.9883 ± 0.74333) followed by Compomer group (25.4183 ± 3.44268) and Control group (88.9783 ± 3.02495). Conclusion: GIC restorative materials have a better enamel demineralization prevention effect than Compomer. Keywords: compomer, demineralization, fluoride, GIC, remineralization

Nutritional Chemical Analysis of Taro (Colocasia esculenta Schott) Accessions from the State of Tabasco, Mexico

Objective: To determine the main nutritional properties and content of bioactive compounds of five varieties of taro, grown in the municipalities of Huimanguillo and Cunduacán, Tabasco. Methodology: The Campechana, Chiapaneca, Tabasqueña, Dulce (P1 and P2) varieties were evaluated to determine their proximal chemical composition, non-nutritional compounds, and antioxidant activity. An analysis of variance and the Tukey test were applied to the data obtained. Results: These varieties had a protein, lipid, ash, and moisture content of 1.13-3.95, 0.64-2.94, 1.58-7.32, and 2.28-5.34 %, respectively. In all cases, the starch content stood out with 62.7-74.7% values. This compound is important in the food industry because its functional properties enable its use in various food systems or other applications. Among the non-nutritional compounds, the following concentrations were identified: phytates (0.235-0.40 Eq/g sodium phytate / 100 g sample); total phenols (0.54-5.76 Eq/g gallic acid / 100 g sample); condensed phenols (1.20-1.51 Eq/mg catechin / 100 g sample); saponins (0.37-1.02 Eq/mg Diosgenin / 100 g sample); and trypsin inhibitors (0.00-0.70 UIT / 100 g sample). Finally, the antioxidant activity had 0.29-0.57 Eq/mg of trolox / g of flour values. Limitations: This work had no limitations. Conclusions: The varieties evaluated presented low concentration of non-nutritional compounds and adequate antioxidant activity; therefore, the taro varieties from the State of Tabasco can be considered sources of starch and compounds with antioxidant activity.

Enhancement of maltodextrin-based adhesive properties using ammonium dihydrogen phosphate (ADP)

Maltodextrin is a new saccharide-based adhesive that can be potentially developed as an alternative for particleboard due to its abundant resources. The addition of ammonium dihydrogen phosphate (ADP) was expected to be able to improve the properties of the maltodextrin, especially the water resistance of the cured adhesive. This study aimed to investigate the properties of maltodextrin/ADP adhesive in the ratios of 100/0, 90/10 and 80/20 wt%. The results showed that the increasing ratio of ADP in maltodextrin-based adhesive can increase not only the insoluble matter rate during boiling condition, but also the other adhesive properties of maltodextrin by lowering the viscosity and increasing the wettability tested in salacca frond particles. The pH adhesive decreased along with the increased ADP ratio. Oneway analysis of variance and Tukey test showed that the maltodextrin/ADP ratios significantly affected the adhesive properties. The thermogravimetric analysis (TGA) of dried mixture adhesive showed the significant changes in the onset and the highest weight reduction temperature of maltodextrin after the ADP addition. The FTIR analysis detected some new peaks that were expected to be related to furan ring and carbonyl groups after the maltodextrin/ADP 90/10 and 80/20 wt% were heated at 200°C for 10 minutes and/or 15 minutes. Maltodextrin/ADP 80/20 wt% had the best adhesive properties for particleboard application.

An Investigation of Mental Toughness Skills in Athletes Snowboard and Ski

Aim: The aim of this research; The aim of this study is to investigate the mental toughness skills of athletes in ski and snowboard. Methods: For data collection, “Mental Toughness Scale” was used which was developed by Sheard et al. 8 and was adapted to Turkish by Altıntaş and Koruç 9 to 212 participants in total consisting of 74 female and 138 male For data analysis, SPSS statistical packet program was used for frequency analysis, and independent t-tests, one-way anova and tukey test were run to find out the source of the difference among different groups of participants Results: Significant differences were found when comparing the mental toughness of the participants according to their branches (p<0.05). Conclusion: According to this; It is seen that skiers have more mental endurance skills than snowboarders. Keywords: Snowboard, Ski, Mental Toughness, Sport