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WOS:000574323000001 PubMed ID: 33020691 The purpose of this study was to examine the effects of a blended teaching-learning approach on academic achievement and twenty-first century skills of preservice teachers who took the teaching principles and methods course. The implementation was carried out over a period of ten weeks with preservice teachers who were enrolled in pedagogical training at the Faculty of Education at Karamanoglu Mehmetbey University in the 2019-2020 academic year. In the study, a semi-experimental research design with experimental and control groups was employed. Data collection tools were an academic achievement test and "multidimensional twenty-first century skills scale". Analysis revealed that there was a significant difference across the two groups' academic achievement and twenty-first century skills in favor of the experimental group. In addition, analysis of the retention test administered four weeks later showed a significant difference in favor of the experimental group. In the light of the results, the implications and future directions were discussed.

Purpose The knowledge loss or longevity of taught lessons is a major concern in medical students and all medical practitioners. This study evaluated the physiology knowledge loss in medical students in Ahvaz Jundishapur University of Medical Sciences in Iran. Methods A total of 265 volunteers from medical students who had previously passed the “general exam of medical basic sciences” at the end of fifth semester took a retention test (RT) to evaluate their knowledge loss of physiology. The candidates were divided into ten groups depending on the semester (S) they were passing at the time of study: 41 students in preclinical levels (S6 and S7), 123 students in externship levels (S8, S9, S10, S11 and S12), and 101 students in internship levels (S13, S14 and S15). The RT consisted of 20 multiple choice questions from all topics of medical physiology, including central nervous system, endocrine, gastrointestinal, cardiovascular, respiratory, renal, blood, and cellular. Results Findings showed that there was a decreasing trend of knowledge loss from S6 to S15. The lowest level of knowledge loss was observed in S15 students. These results also demonstrated that knowledge loss in male medical students was more than that in female students. Conclusion These findings indicated that the physiology knowledge loss trend is inversely correlated with the time passing. We conclude that the reason is that physiology is a basic science which is most applicable during medical students’ clinical years.

The purpose of this study was to compare the phase difference learning effect of terminal feedback with that of concurrent feedback on a bimanual coordination task. The task was a bimanual coordination sliding a periodic movement plus phase into 1/4th of a phase. Participants were divided into two groups so that there were six males and six females each group. A concurrent group could see visual concurrent feedback from a monitor during the movement every trial. A terminal group could see the visual terminal feedback after the movement on each trial. 5 pretest trials were performed. The participants carried out 45 acquisition trials (15 trials x 3 sets) for three days. 2 retention test trials were performed one week after acquisition trials. The main results were as follows: 1）2nd and 3rd days were better than 1st days, and 3rd days was better than 2nd days. 2）2nd and 3rd sets were better than 1st set. Therefore, there was no difference between the effect of terminal feedback and that of concurrent feedback on this task.

The goal of this study is searching effective time (before, during and after physical practice) for mental practice in learning the Volleyball Service Skill. Forty-five beginner students, aged 12–14 years, with no history of Volleyball Service Skill participated in the study (45 Male ones). Most of them were Secondary school students. All were unable to serve Volleyball correctly. The subjects were divided into the three groups (MP before PP, MP during PP and MP after PP). All subjects performed mental and physical practice in 21 sessions and for 30 minutes per session. The subjects were tested at the end of the 7th, 14th, 21th, and 28th sessions. The Volleyball Serving Test was used for test comparing the rate of learning. The result of this research showed there was significant difference between means of the MP-during-PP group, and the MP-before-PP and the MP-after-PP groups in improving their Volleyball Service skill. Moreover, the MP-before-PP and MP-after-PP groups did not differ from each other concerning the scores. The retention test showed that subjects in the MP-before-PP and the MP-after-PP groups, in contrast to the MP-during-PP group, did not significantly improve their Volleyball Service skill. This study suggested that coaches and P.E teachers apply mental practice (10 minutes) as an essential part in programs and teach the beginners that use mental practice in every time of physical practice (spatially during physical practice).

Introduction To overcome limitations of screw-retained prostheses, cement-retained prostheses have become the restoration of choice now a days. Selection of the cement hence becomes very critical to maintain retrievability of the prostheses. Aim The purpose of this study was to assess and compare the retention of base metal crowns cemented to implant abutments with five different luting cements. Materials and methods Ten implant analogs were secured in five epoxy resin casts perpendicular to the plane of cast in right first molar and left first molar region and implant abutments were screwed. Total of 100 metal copings were fabricated and cemented. The cements used were zinc phosphate, resin modified glass ionomer cement, resin cement, non-eugenol acrylic based temporary implant cement & non-eugenol temporary resin cement implant cement. Samples were subjected to a pull-out test using an Instron universal testing machine at a crosshead speed of 0.5mm/min. The load required to de-cement each coping was recorded and mean values for each group calculated and put to statistical analysis. Results The results showed that resin cement has the highest retention value 581.075N followed by zinc phosphate luting cement 529.48N, resin modified glass ionomer cement 338.095 N, non-eugenol acrylic based temporary implant cement 249.045 N and non-eugenol temporary resin implant cement 140.49N. Conclusion Within the limitations of study, it was concluded that non-eugenol acrylic based temporary implant cement and non-eugenol temporary resin implant cement allow for easy retrievability of the prosthesis in case of any failure in future. These are suitable for cement retained implant restorations. The results provide a possible preliminary ranking of luting agents based on their ability to retain an implant-supported prosthesis and facilitate easy retrieval.

International audience; This study ascertained the combination of physical activity (PA) and motivational interviewing (MI) on weight gain prevention, weight loss and maintenance of weight loss in children and youth. There have been a relatively large number of studies examining the role of PA programs, defined as supervised exercise sessions, in children and adolescents in obesity treatment. These programs are consistently associated with positive obesity outcomes (e.g., BMI decrease). However, the positive impact of PA programs tends to fade over time when structured exercise programming is discontinued. As youth weight management is a multifactorial issue (International Conference on Physical Activity and Obesity Children), it is important to identify intervention modalities that promote long-term behavioral change. Among components for weight maintenance, self-efficacy and self-regulation strategies are considered as two effective determinants and were similarly evoked by individuals who...

International audience; Thinking about our behaviors for a future recall like playing a piano sonata during the next weekend (i.e., delayed motor intention) should engage at some level sensorimotor-based representations. Theoretically, such representations can be stored through both an action- and a goal-based mechanism. An action-based mechanism is related to the specific motor sequence of fingers like the key presses on the piano, and a goal-based mechanism is related to the musical tones generated by the key presses. From these considerations, the present article tries to explore whether the cognitive nature of delayed motor intention is more based on an action or goal mechanism. We reviewed empirical evidence and theoretical accounts of different domains such as motor skills, tool use, and action memory supporting the idea that such delayed motor intentions are rather represented through a goal-based mechanism. The specific role of this goal-based mechanism is to envision the future in an implementation-neutral mode to flexibly and efficiently retrieve an adapted action to environmental constraints. This goal-based account offers an interesting alternative to reshape the classical models about the representations of delayed motor intention. We also discuss how this account can be applied to practical activities in daily life situations.

The employment of local soils for extraction of metallic elements was evaluated through batch tests to treat wastewaters generated in a petroleum refinery plant in southern Brazil. Clay and organic carbon content and clay mineralogy provide these soils, in principle, with moderate metal retention capacity. The following retention order was established: Cr3+ > Pb2+ > Cu2+ > Hg2+ > Cd2+, with total amount of metals retained varying from 36 to 65 meq kg-1. The results show the high efficiency of local soils for extracting metals from liquid effluents through sorption and precipitation processes under acid pH conditions.

The employment of local soils for extraction of metallic elements was evaluated through batch tests to treat wastewaters generated in a petroleum refinery plant in southern Brazil. Clay and organic carbon content and clay mineralogy provide these soils, in principle, with moderate metal retention capacity. The following retention order was established: Cr3+ > Pb2+ > Cu2+ > Hg2+ > Cd2+, with total amount of metals retained varying from 36 to 65 meq kg-1. The results show the high efficiency of local soils for extracting metals from liquid effluents through sorption and precipitation processes under acid pH conditions.

The employment of local soils for extraction of metallic elements was evaluated through batch tests to treat wastewaters generated in a petroleum refinery plant in southern Brazil. Clay and organic carbon content and clay mineralogy provide these soils, in principle, with moderate metal retention capacity. The following retention order was established: Cr3+ > Pb2+ > Cu2+ > Hg2+ > Cd2+, with total amount of metals retained varying from 36 to 65 meq kg-1. The results show the high efficiency of local soils for extracting metals from liquid effluents through sorption and precipitation processes under acid pH conditions.