The effect of acid etching on remineralization of incipient caries lesions : a micro-ct study

Indiana University-Purdue University Indianapolis (IUPUI)Etching of enamel caries lesions has been demonstrated to enhance remineralization. However, this effect reaches a plateau after a period of time. This study aimed at investigating the effectiveness of additional acid etching on remineralization. Forty 1 mm × 2 mm human enamel blocks with chemically induced artificial incipient lesions were used. Ten specimens were randomly selected at the end of demineralization for transverse microradiography (TMR) analysis. The remaining specimens were then divided into three groups (n = 10). Group A was remineralized by a pH cycling system with 1100 ppm sodium fluoride for 20 days. In group B, the specimens were etched with 35-percent phosphoric acid for 30 s and then remineralized. Group C was remineralized by same procedure as group B plus and given an additional acid etch after 10 days of remineralization. Mineral density was measured by x-ray microtomography (µ-CT). The volumetric mineral content [VM (µm3×105)] was determined between 91 and 0-wt%. The µ-CT % mineral recovery (%) was calculated using the formula 100×(remineralize VM - demineralization VM) / (sound VM - demineralization VM). One-hundred-μm sections of demineralized and remineralized specimens were used to assess the mineral loss (IML: vol%×µm) and lesion depth (µm) using TMR. The three groups showed no significant difference in mineral change or mineral content for µ-CT or TMR lesion depth. The TMR IML showed a significant difference between the demineralized specimens and the three remineralized groups. The correlation between TMR IML and TMR lesion depth was 0.66 (p < 0.0001). The µ-CT percent mineral recovery from demineralization was correlated with neither TMR IML nor TMR lesion depth. When evaluated with µ-CT, the twice-acid-etched group presented lower mineral gain values than the group etched only once with acid. Also, the twice-etched group presented lower mineral gain and greater TMR IML compared with the non-acid etch group. TMR images revealed reduction of surface layer in the acid-etched groups, especially in the twice-etched group, in which significant reduction or loss of surface layer occurred. Based on these results, we conclude that additional acid etching with 35-percent phosphoric acid does not enhance remineralization compared with a single application of acid etching. We believe that the viable existence of the surface layer is essential for remineralization of the lesion. Further investigations into the accuracy of µ-CT to detect minute mineral changes in incipient caries lesions are probably needed

Effectivity of Agroedutourism to Strengthen Healthy Agro-Ecosystem Awareness of Students in Some Elementary Schools in Malang Raya, East Java

This research aimed to study the effectivity of agroedutourism to strengthen students environmental awareness, especially concerning on importance of rice organic farming system. Eighty three students were invited joining the program. They were the 5th grade of three elementary schools (SDN Ketawanggede 2, SDI Surya Buana and SDN Sumberngepoh 02). It was provided three agroedutourism programs, i.e. two outdoors programs (Farmers friends and enemies, Plants for biopesticide and natural attractant), as well as the indoor session called Healthy agroecosystem. Including the programs were joining ecoeco-games and tasting some food (steamed rice-bran brownies, organic red rice milk and zalacca fruits). Effectivity of the programs was evaluated using questionnaire. Data were analyzed by SPSS program using Wilcoxon test (α=0,05). Results showed overall that the agroedutourism increased significantly students cognitive, affective and even their appreciation to agricultural environment. Students of SDN Sumberngepoh 02 showed a highest agro-environmental awareness. While, the highest cognitive improvement was gained by students of SDI Surya Buana (76%), followed by SDN Ketawanggede 2 (62%) and SDN Sumberngepoh 02 (47%). The most interesting program was an outdoor namely Farmers friends and enemies, while they preferred a steamed rice-bran brownies than the other one. They were exciting joining some eco-games especially predator and prey as well as guest animal name and its role. It seemed that the outdoor programs were more appreciated rather than the indoor one. Keywords: Agroedutourism, awareness, effectivity, healthy agro-ecosystem Keywords: Agroedutourism, awareness, effectivity, healthy agro-ecosyste

Design opportunities for wearable devices in learning to climb

In this paper, we present a field study on the learning of climbing aimed at defining the design space of wearable devices to support beginners. Three main findings have emerged from our study. First, climbing has a strong emotional impact on beginners; therefore, learning to climb requires mastering new motor patterns as well as negative emotions, such as stress and fear. Second, the feeling of danger that climbers often experience can be mitigated by trust in the climbing partner and the perception of her active presence. Finally, a big problem in climbing is the communication difficulty between the climbing partners and between climber and instructor. We conclude the paper presenting four design considerations for the design of wearable devices meant to support the learning of climbing by providing the actors involved with augmented communication. Such augmented communication should address both the physical and the emotional difficulties of this sport

O ESPORTE COMO MEDIADOR DAS REIVINDICAÇÕES POLÍTICAS PALESTINAS: APONTAMENTOS ACERCA DO DOCUMENTÁRIO “SOBRE FUTEBOL E BARREIRAS”

A presente resenha trata de expor as narrativas do filme documental “Sobre Futebol e Barreiras”, gravado durante a Copa do Mundo de 2010 na África do Sul. Lançado em 2011, sob a direção de Arturo Hartmann, Lucas Justiniano, José Menezes e João Carlos Assumpção, o documentário transpõe importantes questões do cotidiano conflituoso, próprio da região Israel-Palestina, bem como as consequências da suposta neutralidade política do cenário da Copa do Mundo. A produção apresenta uma série de debates oriundos dos aspectos políticos relativos à “questão palestina”, relacionada às dinâmicas de enfrentamento do cenário esportivo, condição que repercutiu em organizações de torcidas a partir das demandas regionais de modo a provocar manifestações diplomáticas sobre a requisição de autodeterminação política.Palavras-chave: Esporte; Palestina; Política Sport as a mediator of Palestine political demands: notes on the documentary "Football and barriers" Abstract: This review exposes the narratives of the documentary “Sobre futebol e barreiras”, recorded during the 2010 FIFA World Cup and released in 2011. Directed by Arturo Hartmann, Lucas Justiniano, José Menezes and João Carlos Assumpção, the documentary transposes important questions regarding the conflicting day-to-day of the Israel-Palestine area, as well as the consequences of the alleged political neutrality of the FIFA World Cup scenario. The production presents a series of debates originated from political aspects related to the “Palestine question” and the specific dynamics of sportive confrontations, a condition that affected the organization of sports crowds, constituted based on regional demands, thus causing diplomatic expressions about the need for political self-determination. Keywords: Sport; Palestine; Politics Deporte como mediador de demandas políticas palestinas: notas sobre el documental “Sobre fútbol y barreras" Resumen: La presente reseña expone las narrativas del documental “Sobre futebol e barreiras”, grabado durante el Mundial de futbol de 2010, em Africa del Sur. Estrenado en 2011 bajo la dirección de Arturo Hartmann, Lucas Justiniano, José Menezes y João Carlos Assumpção, el documental transpone importantes cuestiones del conflictivo cotidiano propio de la región Israel-Palestina, así como las consecuencias de la supuesta neutralidad política del escenario del Mundial de futbol. La producción presenta una serie de debates originarios de los aspectos políticos relacionados a la “cuestión palestina”, a las dinámicas de enfrentamiento del escenario deportivo, condición que repercutió en organizaciones de hinchadas a partir de las demandas regionales, provocando manifestaciones diplomáticas sobre la necesidad de autodeterminación política.Palabras Claves: Seporte; Palestina; Polític

Interpersonal emotion regulation in team sport: mechanisms and reasons to regulate teammates' emotions examined

The interpersonal dimension of emotion regulation in the field of sport has lately received a burgeoning interest. Nevertheless, how and why athletes regulate their teammates' emotions in competitive setting remains unclear. Across two studies within a team sport context, we uncovered athletes' mechanisms for, and reasons to regulate teammates' emotions during competition. In Study 1, we investigated how rugby (N = 22 males) players' emotions were self- and interpersonally regulated during games. Findings revealed the emergence of a continuum of self-involvement in the regulatory processes, wherein two forms of emotion regulation co-existed: self-regulation (total self-involvement) and interpersonal regulation, which included co-regulation (partial self-involvement; regulation with others) and extrinsic regulation (no self-involvement; regulation by/of others). In Study 2, we examined the motives that lead rugby (n = 30 males) players to use interpersonal extrinsic regulation strategies during games. Interview data indicated that players regulated teammates' emotions for altruistic reasons (to help a teammate), egoistic reasons (for one's own benefits), or both. Overall, our findings further knowledge to better understand interpersonal emotion regulation within competitive team sport contexts. From an applied perspective, findings highlight the role that both individual goals and ego involvement may play in optimising efficient interpersonal regulation during competition at team level

Effects of precompetition state anxiety interventions on performance time and accuracy among amateur soccer players: Revisiting the matching hypothesis

In this study, we tested the matching ypothesis, which contends that administration of a cognitive or somatic anxiety intervention should be matched to a participant's dominant anxiety response. Sixty-one male soccer players (mean age 31.6 years, s=6.3) were assigned to one of four groups based on their responses to the Competitive State Anxiety Inventory-2, which was modified to include a directional scale. Interventions were randomly administered in a counterbalanced order 10 min before each performance trial on a soccer skill test. The dominantly cognitive anxious group (n=17), the dominantly somatic anxious group (n=17), and the non-anxious control intervention group (n=14) completed a baseline performance trial. The second and third trials were completed with random administration of brief cognitive and somatic interventions. The non-anxious control group (n=13) completed three trials with no intervention. A mixed-model, GroupTreatment multivariate analysis of variance indicated significant (P0.05), or performance time or accuracy (P>0.05). The present findings do not provide support for the matching hypothesis for state anxiety intensity and direction, or for performance

Awareness, practices and perceptions of community pharmacists towards antimicrobial resistance and antimicrobial stewardship in Libya: a cross-sectional study

Background: Community pharmacists play a vital role in promoting appropriate use of antibiotics in the community. This study evaluated the practices and perceptions of community pharmacists towards antibiotic use, antibiotic resistance, and antimicrobial stewardship in Libya. Methods: A cross-sectional study was conducted among community pharmacists in Libya using a 47-item validated, pre-tested online questionnaire. Data was collected from December 2021 to February 2022 and was analysed using descriptive and inferential analyses. Results: Of the 114 questionnaires included in the analysis, 54.4% were females, 78.1% had < 10 year working experience (78.1%), and 81.6% had a Bachelor of Pharmacy. Most (78.1%) strongly agreed/agreed that community pharmacists have an important role to play to reduce antibiotic resistance. Overall, the participants had a moderate perception towards antimicrobial resistance (median score: 21.5; IQR [16-28] out of 35.0). More than 40% supply antibiotics when patients requested them specifically, because if they do not supply them, patients will just go to another pharmacy. About 47% strongly agreed/agreed that if a patient cannot afford a full course of antibiotics all in one go, they will give them a smaller amount that they are able to afford at that time, even when a longer duration of treatment is required. Most (66.7%) had no previous involvement in antibiotics awareness campaign due to 'I have never heard about the campaign' (48.7%) and 'I do not have enough time to participate' (22.4%). Overall, the perception towards antimicrobial stewardship was good (20 [13-25] out of 25.0). Raising awareness of rational antibiotic use, including antimicrobial resistance, among pharmacy students (83.4%) and patient education by pharmacists in community pharmacies at the time medicines are supplied to patients (81.6%) were the most common strategies to improve rational use of antibiotics in community pharmacy. Conclusions: Community pharmacists in Libya recognise their role in reducing antimicrobial resistance. They had a moderate perception towards antimicrobial resistance and a good perception towards antimicrobial stewardship. However, inappropriate antibiotic practices were common. The most common strategies to improve rational use of antibiotics in community pharmacy were raising awareness about the rational antibiotic use among pharmacy students and patient education by community pharmacists at the time antibiotics are dispensed to patients. Regulations are needed to restrict dispensing antibiotics without prescription among community pharmacists. 2023, The Author(s).Scopu

The sport value framework - a new fundamental logic for analyses in sport management

Research question: Sports economic theory and management models have frequently been criticised for not sufficiently explaining phenomena in sport management. This article addresses this gap by proposing a conceptual framework that can be used to understand sport management problems and derive appropriate strategies. Research methods: The framework proposed in this conceptual article has been developed through a critical review of existing literature on sport management and theoretical considerations based on the service-dominant logic. Results and findings: The sport value framework (SVF) provides 10 foundational premises on value co-creation in sport management and suggests three levels for its analysis. The main contribution is a new and better theoretical basis for explaining phenomena in sport management compared with traditional sport economic thinking. Moreover, the SVF provides guidance in structuring research in sport management. Implications: The framework encourages researchers and practitioners to rethink their strategies by applying a different logic that captures the complexity of sport management. © 2014 © 2014 European Association for Sport Management

Mental fortitude training: An evidence-based approach to developing psychological resilience for sustained success

Drawing on the body of knowledge in this area, this article presents an evidence-based approach to developing psychological resilience for sustained success. To this end, the narrative is divided into three main sections. The first section describes the construct of psychological resilience and explains what it is. The second section outlines and discusses a mental fortitude training™ program for aspiring performers. The third section provides recommendations for practitioners implementing this program. It is hoped that this article will facilitate a holistic and systematic approach to developing resilience for sustained success