WorldWideScience

Sample records for school-based assessment sba

  1. The Promotion of Critical Thinking Skills in School-Based Assessment (SBA)

    Science.gov (United States)

    Kamarulzaman, Wirawani; Kamarulzaman, Wirawahida

    2016-01-01

    The new curriculum introduced in the Malaysian primary students; the Primary School Standard Curriculum (Kurikulum Standard Sekolah Rendah-KSSR) together with the school-based assessment (SBA) is a step taken by the Malaysian government to encourage thinking skills to students, specifically critical thinking skills. The study explores teachers'…

  2. Student Voices in School-Based Assessment

    Science.gov (United States)

    Tong, Siu Yin Annie; Adamson, Bob

    2015-01-01

    The value of student voices in dialogues about learning improvement is acknowledged in the literature. This paper examines how the views of students regarding School-based Assessment (SBA), a significant shift in examination policy and practice in secondary schools in Hong Kong, have largely been ignored. The study captures student voices through…

  3. Predicting Teachers' Intentions to Implement School-Based Assessment Using the Theory of Planned Behaviour

    Science.gov (United States)

    Yan, Zi

    2014-01-01

    The theory of planned behaviour (TPB) was used to explore the Hong Kong teachers' intentions to implement school-based assessment (SBA) and the predictors of those intentions. A total of 280 teachers from Hong Kong secondary schools who had been involved in SBA were surveyed. Rasch-calibrated teacher measures were calculated for each of the 6…

  4. Whatever Happened to School-Based Assessment in England's GCSEs and A Levels?

    Science.gov (United States)

    Opposs, Dennis

    2016-01-01

    For the past 30 years, school-based assessment (SBA) has been a major feature of GCSEs and A levels, the main school examinations in England. SBA has allowed teachers to allocate marks to their students for the level of skills that they show in their work. Such skills include for example, experimental techniques in science, performance in drama…

  5. Teachers' Knowledge and Readiness towards Implementation of School Based Assessment in Secondary Schools

    Science.gov (United States)

    Veloo, Arsaythamby; Krishnasamy, Hariharan N.; Md-Ali, Ruzlan

    2015-01-01

    School-Based Assessment (SBA) was implemented in Malaysian secondary schools in 2012. Since its implementation, teachers have faced several challenges to meet the aims and objectives of the School-Based Assessment. Based on these challenges this study aims to find the level of teachers' knowledge and readiness towards the implementation of…

  6. A Reliability and Validity of an Instrument to Evaluate the School-Based Assessment System: A Pilot Study

    Science.gov (United States)

    Ghazali, Nor Hasnida Md

    2016-01-01

    A valid, reliable and practical instrument is needed to evaluate the implementation of the school-based assessment (SBA) system. The aim of this study is to develop and assess the validity and reliability of an instrument to measure the perception of teachers towards the SBA implementation in schools. The instrument is developed based on a…

  7. The management of moderation of school based assessment at Grade 12 level in the Gauteng province

    OpenAIRE

    2012-01-01

    D.Phil. In 2000, the incumbent Minister of Education, Professor Kader Asmal, mandated the inclusion of school based assessment (SBA) as a component of Senior Certificate (Grade 12) assessment across all examining bodies in the country. Prior to this, the Senior Certificate (Grade 12) examination was a “once off” terminal examination at the end of twelve years of schooling. The rationale for the inclusion of SBA as a component of the Senior Certificate (Grade 12) was to remove the focus fro...

  8. Differences in the quality of school-based assessment: Evidence in Grade 9 mathematics achievement

    Directory of Open Access Journals (Sweden)

    Surette van Staden

    2017-10-01

    Full Text Available This non-experimental, exploratory and descriptive study, using a qualitative case study approach, aims to investigate whether there is evidence of variance in the quality of school-based assessment (SBA in Grade 9 mathematics. Participants were purposefully selected from five schools in a district in the Northern Cape in South Africa. After questionnaires were completed, individual face-to-face semi-structured interviews were conducted with participants from the participating schools. Documents were collected and analysed to corroborate or contradict data from the questionnaires and interviews. Lack of adherence to policy, variation in classroom practice and inconsistent monitoring and moderation practices were identified as themes of possible sources of variation in SBA. An analysis of the interviews and document analysis revealed that most of the Heads of Department and principals lacked in-depth knowledge and understanding of their roles and functions in making SBA reliable, credible and valid. This was not only due to a lack of capacity to perform such functions, but was also due to a lack of effective induction and training by the district and provincial offices. Findings from the current study point to the necessary role that a periodic evaluation of SBA may play to ensure its effectiveness, credibility and reliability as part of successful assessment practices in a mostly developing context.

  9. School based assessment module for invasion games category in ...

    African Journals Online (AJOL)

    School based assessment module for invasion games category in physical education. ... This study identify the level of basic skills of invasion games category when using School Based Assessment Module. ... AJOL African Journals Online.

  10. Confirmatory Factor Analysis of the School-Based Assessment Evaluation Scale Among Teachers

    Directory of Open Access Journals (Sweden)

    Nor Hasnida Che Md. Ghazali

    2016-09-01

    Full Text Available The school-based assessment (SBA system is a holistic assessment system that is conducted in schools by subject teachers in assessing the students cognitive (intellect, affective (emotional and spiritual and psychomotor (physical aspects. It is in line with the National Philosophy of Education and the Standards-based School Curriculum in Malaysia. In order to evaluate the implementation of SBA, a measurement scale was validated. Questionnaire was used as an instrument for data collection. 776 primary and secondary school teachers were selected as respondents using stratified random sampling. The data was analyzed with SPSS and AMOS version 18. The aim of this paper was to explore different factor structures of the SBA evaluation scale by using the second-order Confirmatory Factor Analysis. Results indicated that the SBA evaluation model was a valid and reliable scale. The input measurement model was validated with two factors (personnel qualifications and physical infrastructure, process measurement model was validated with six factors (‘attitude’, ‘understanding’, ‘skills’, ‘challenges’, ‘moderation’ and ‘monitoring’ and product measurement model was validated with two factors (‘students’ attitude’ and ‘students’ motivation’. This study provides support for using a valid instrument in evaluating the implementation of SBA in schools. Furthermore, the CFA procedures used supported the conceptual framework set out earlier. Thus, it presents clearly the importance of the evaluation process of any education system to follow all the dimensions outlined in the evaluation model proposed by Daniel Stufflebeam.       Sistem Penilaian Berbasis Sekolah (SBA adalah sistem penilaian holistik yang dilakukan di sekolah-sekolah oleh guru mata pelajaran dalam menilai kognitif (kecerdasan, afektif (emosional dan spiritual dan psikomotorik (fisik siswa. Hal ini sejalan dengan Filsafat Pendidikan Nasional dan Kurikulum

  11. Information and Communication Technology and School Based ...

    African Journals Online (AJOL)

    Information and Communication technology and school based assessment (SBA) is practice that broadens the form mode, means and scope of assessment in the school using modern technologies in order to facilitate and enhance learning. This study sought to ascertain the efficacy of Information and Communication ...

  12. Developing School Heads as Instructional Leaders in School-Based Assessment: Challenges and Next Steps

    Science.gov (United States)

    Lingam, Govinda Ishwar; Lingam, Narsamma

    2016-01-01

    The study explored challenges faced by school leaders in the Pacific nation of Solomon Islands in school-based assessment, and the adequacy of an assessment course to prepare them. A questionnaire including both open and closed-ended questions elicited relevant data from the school leaders. Modelling best practices in school-based assessment was…

  13. An evaluation of the process used to determine life orientation moderation in school based asssessments for Grade twelve

    OpenAIRE

    2013-01-01

    M. Ed. (Higher Education) This study seeks to evaluate the processes used in the moderation of School-based Assessment (SBA) in Life Orientation (LO). This subject has been introduced by the Department of Education (DoE) to form part of Grade 12 exit examinations the National Curriculum Statement (NCS). SBA refers to all assessment that is conducted by teachers, and sometimes is known as internal assessment, coursework or continuous assessment...

  14. A School-Based Suicide Risk Assessment Protocol

    Science.gov (United States)

    Boccio, Dana E.

    2015-01-01

    Suicide remains the third leading cause of death among young people in the United States. Considering that youth who contemplate suicide generally exhibit warning signs before engaging in lethal self-harm, school-based mental health professionals can play a vital role in identifying students who are at risk for suicidal behavior. Nevertheless, the…

  15. Current smoking among young adolescents: assessing school based contextual norms

    OpenAIRE

    Pokorny, S; Jason, L; Schoeny, M

    2004-01-01

    Objective: To extend research on the relation of school based contextual norms to current smoking among adolescents by using three analytic techniques to test for contextual effects. It was hypothesised that significant contextual effects would be found in all three models, but that the strength of these effects would vary by the statistical rigor of the model.

  16. Assessing the Outcomes of School-Based Partnership Resilience Intervention

    Science.gov (United States)

    Mampane, Ruth; Huddle, Christelle

    2017-01-01

    This study reports on the outcomes of educational psychology school-based intervention. The aim was to determine whether the intervention served as an educational pathway to resilience. Through a concurrent mixed-methods research design interpreted through a pragmatic lens, academic school performance of students in a rural school was used as an…

  17. Assessing the Impact of a School-Based Group Approach with Adolescent Males

    Science.gov (United States)

    Liddell, T. Michael; Kurpius, Sharon Robinson

    2014-01-01

    This study assessed the impact of a school-based group intervention, "The Council for Boys and Young Men," specifically designed for adolescent males. The participants who attended an alternative school in a metropolitan area were randomly assigned to the intervention or to waitlist control groups. Measures assessed self-esteem, future…

  18. Modernizing Schools in Mexico: The Rise of Teacher Assessment and School-Based Management Policies

    Science.gov (United States)

    Echávarri, Jaime; Peraza, Cecilia

    2017-01-01

    In this paper we analyze the evolution of the teacher assessment policy and the origins of school-based management initiatives in the Mexican education context from the late 1980s until the last 2012-2013 Education Reform (RE2012-2013). Mexico joined the Global Education Reform Movement during the 1990s through the National Agreement for the…

  19. Towards a Model of School-Based Curriculum Development and Assessment Using the SOLO Taxonomy.

    Science.gov (United States)

    Biggs, John

    1989-01-01

    One factor preventing the wider acceptance of school-based curriculum development and assessment is the problem of comparing performances of different students, in different schools. The SOLO taxonomy is used to describe the complexity of learning outcomes in a language that is generally applicable across the curriculum. (Author/MLW)

  20. School-based assessments in high-stakes examinations in Bhutan: a question of trust? : exploring inconsistencies between external exam scores, school-based assessments, detailed teacher ratings, and student self-ratings

    NARCIS (Netherlands)

    Luyten, Johannes W.; Dolkar, Dechen

    2010-01-01

    This study explores the validity of school-based assessments when they serve to supplement scores on central tests in high-stakes examinations. The school-based continuous assessment (CA) marks are compared to the marks scored on the central written Bhutan Certificate of Secondary Education (BCSE)

  1. School-Based Mental Health Professionals' Bullying Assessment Practices: A Call for Evidence-Based Bullying Assessment Guidelines

    Science.gov (United States)

    Blake, Jamilia; Banks, Courtney S.; Patience, Brenda A.; Lund, Emily M.

    2014-01-01

    A sample of 483 school-based mental health professionals completed a survey about the training they have received related to conducting bullying assessments in schools, competence in conducting an assessment of bullying, and the bullying assessment methods they used. Results indicate that school counselors were usually informed about incidents of…

  2. How science teachers' concerns about school-based assessment of practical work vary with time: the Hong Kong experience

    Science.gov (United States)

    Cheung, Derek; Yip, Din-Yan

    2004-02-01

    School-based assessment of science students' practical skills has two important roles--as a complement to written papers in public examinations and as a catalyst for enriching the science curriculum in schools. This article describes a quantitative study of the concerns chemistry and biology teachers experience as they engage in the process of implementation of a school-based assessment scheme for practical work. A 23-item questionnaire was developed to measure five categories of teacher concern: evaluation, information, management, consequence and refocusing. The nature of each category of teacher concern is discussed in relation to innovation adoption and implementation. Data were collected from 400 chemistry and 412 biology teachers in Hong Kong. Teachers' information and management concerns lessened in intensity when they became experienced users of a school-based assessment scheme. However, teaching experience alone could not motivate teachers to think more about the impact of school-based assessment on student learning, their professional development in student assessment and the possible refinements in their school-based assessment scheme. Concerns-based interventions are suggested to help teachers grow professionally.

  3. Assessing the effectiveness of a school-based oral health promotion programme in Yichang City, China.

    Science.gov (United States)

    Tai, Bao-Jun; Jiang, Han; Du, Min-Quan; Peng, Bin

    2009-10-01

    To assess the outcome of oral health promotion in schoolchildren over a 3-year period in Yichang City, Hubei, China. In a cluster randomized controlled trial, the concept of the World Health Organization Health Promoting Schools Project was applied to primary schoolchildren. Seven intervention schools and eight control schools were randomly selected from one district by stratified cluster sampling. The study was conducted as a 3-year follow-up study. After 3 years, 661 children remained in the intervention group and 697 children in the control group. Data on dental caries, plaque accumulation, and sulcus bleeding were collected by clinical examination, while behavioural data were gathered by self-administered questionnaires. The 3-year net mean DMFS increment score was 0.22 in the intervention schools and 0.35 in the control schools (P schools adopted regular oral health behavioural practices such as brushing their teeth at least twice a day, visiting the dentist within the past calendar year, and using fluoride toothpaste. The study suggests that the school-based oral health promotion was an effective way to reduce new caries incidence, improve oral hygiene and establish positive oral health behavioural practices in the targeted schoolchildren.

  4. [Process evaluation in relation to effectiveness assessment: experiences with school-based programs].

    Science.gov (United States)

    Ariza, Carles; Villalbí, Joan R; Sánchez-Martínez, Francesca; Nebot, Manel

    2011-06-01

    Evaluation of public health interventions usually focus on the quality of design and research methods, and less on the quality of the intervention or process evaluation. In process evaluation of school-based interventions, key issues are how completely the intervention is carried out and adherence to the protocol. In addition, exploration of intermediate variables, such as those that influence (and often predict) preventable behavior, is highly useful. This article describes the basic concepts in this topic, using examples of the effectiveness of some preventive interventions carried out in schools. The interventions discussed were mainly quasi-experimental studies, based on data from programs promoted by public health teams in the city of Barcelona. Data from process evaluation of preventive programs in secondary schools that underwent formal assessment of their effectiveness is provided. The examples are drawn from preventive programs of HIV infection or unprotected sexual intercourse (PRESSEC program) and drug consumption prevention (the PASE, PASE.bcn and x kpts programs). These examples show why the intervention process influences the impact of the programs and their results. Thorough planning of process evaluation is essential to obtain valid indicators that will identify, in the effectiveness evaluation of the intervention, the most efficacious strategies to obtain positive outcomes. Copyright © 2011 Sociedad Española de Salud Pública y Administración Sanitaria. Published by Elsevier Espana. All rights reserved.

  5. Assessing the nutritional status of Palestinian adolescents from East Jerusalem: a school-based study 2002-03.

    Science.gov (United States)

    Jildeh, Christine; Papandreou, Christopher; Abu Mourad, Tayser; Hatzis, Christos; Kafatos, Anthony; Qasrawi, Radwan; Philalithis, Anastas; Abdeen, Ziad

    2011-02-01

    In Palestine, there is a little information about nutrition of adolescents compared to other age groups. This study was designed to assess the nutritional status of Palestinian school-aged children (11-16 years) in East Jerusalem during 2002-03. A school-based cross-sectional study targeted randomly 313 adolescents from public and private schools. A previously validated and reliable questionnaire was administered through interviews that included anthropometric and hemoglobin measurements, 24-h dietary intake recall and physical activity questionnaire. It was found that being overweight (24.3%) or obese (9.9%) coexisted with being underweight (4.8%) and/or anemic (23.3%). Only 22.4% of the study subject had physical activity for ≥5 days a week with boys being more physically active than girls (p education programs targeted at adolescents and parents need to be developed as part of overweight-obesity, malnutrition and anemia prevention.

  6. Assessment of a school-based mass treatment for soil-transmitted helminth infections in Capiz, the Philippines.

    Science.gov (United States)

    Bacon, Kristina M; Shah, Mirat; Taylor, Laura; Macatangay, Bernard Jonas C; Veldkamp, Peter; Belizario, Vicente Y

    2012-05-01

    We evaluated the War on Worms in the Western Visayas (WOW-V) school-based mass treatment strategy in Capiz, the Philippines by assessing potential determinants of program acceptance among parents, teachers, and local health and education officials involved. Written surveys were distributed to parents and teachers assessing knowledge, attitudes and practices regarding soil-transmitted helminth (STH) infections. Associations between data were examined using the Fisher's exact test (alpha = 0.05). Descriptive statistics and t-tests were employed to analyze teacher survey results. Local health and education officials participated in key-informant interviews (KIs) to evaluate their attitudes and practices regarding WOW-V; data was qualitatively analyzed and grouped. A strong association was observed between parental consent during the first two rounds of treatment and willingness to do so again. Most parents gave consent for their child to receive treatment at least once and demonstrated a high level of knowledge regarding STH infections. The majority of teachers had positive attitudes toward their role in the program. Many identified lack of training and a fear of side effects as barriers to higher coverage. Lack of funding, program monitoring difficulties and insufficient parental education were identified by local officials as barriers. Proper planning and design is important to achieve high initial consent for program acceptance. The results correlate with studies showing relationships between health education and treatment acceptance. The implementation of health education and monitoring measures has the potential to greatly improve both treatment coverage and program infrastructure.

  7. Assessing the Implementation Fidelity of a School-Based Teaching Personal and Social Responsibility Program in Physical Education and Other Subject Areas

    Science.gov (United States)

    Escartí, Amparo; Liops-Goig, Ramon; Wright, Paul M.

    2018-01-01

    Purpose: The Teaching Personal and Social Responsibility (TPSR) model was developed to foster responsibility and teach life skills that transfer to various settings. The purpose of this study was to assess the implementation fidelity of a school-based TPSR program in physical education and other subject areas. Method: Systematic observation was…

  8. 從香港教師的視角探究校本評核的實施問題──實踐與信念之分析 An Investigation of the Implementation Problems of School-Based Assessment in Hong Kong from the Viewpoint of Teachers: An Analysis of Practices and Beliefs

    Directory of Open Access Journals (Sweden)

    譚彩鳳 Choi-Fung Tam

    2009-03-01

    Full Text Available 眾所周知,公開考試主要的功能是為了篩選,可是傳統的筆試卻無法全面考核學生的能力,側重操練、記憶,以期通過考試的教學模式難以發展學生的高層次能力與理解力。因此,世界各地推行校本評核,期望彌補公開考試的不足。香港於2005年9月起在高中語文科實行校本評核,目的是拓寬評核的基礎,並提升學與教的成效。然而,實施不足一年,教師紛紛表達不滿。本研究以半結構訪談形式訪問12 位實施中文科校本評核的教師,了解他們對校本評核的看法、其扮演的角色及實施的困難。研究發現,教師所持的評核信念與校本評核的意圖理念並不相容,教師的角色為評核者及監督者,實施上所遇到的困難,諸如校本評核的運作、師生角力及與同事磨擦等問題,凡此種種不利因素很難提升學習效能及舒緩學生的考試壓力。本研究所得出的結論是,僅依賴評核改革並不足以改進教與學的素質,教師的投入才是達致成功教育改革的最大動力。 It is acknowledged that public examinations principally serve for selection functions. However, the traditional form of paper-and-pencil assessment is unable to evaluate students’ diverse capabilities. In order to pass through these examinations, teaching and learning are confined in a narrow range of coaching and memorizing skills. These malpractices are also unlikely to develop a broader range of higher-order competencies and understandings of students. Therefore, school-based assessment (SBA has been launched by different countries to complement public examinations. In Hong Kong, SBA has also been implemented since September 2005 at senior secondary level in Chinese Language. It aims at broadening the assessment base and improving the effectiveness of learning and teaching. However, teachers expressed their discontents after several months

  9. Child and Adolescent Suicidal Behavior: School-Based Prevention, Assessment, and Intervention. Practical Intervention in the Schools Series

    Science.gov (United States)

    Miller, David N.

    2011-01-01

    Meeting a crucial need, this book distills the best current knowledge on child and adolescent suicide prevention into comprehensive guidelines for school-based practitioners. The author draws on extensive research and clinical experience to provide best-practice recommendations for developing schoolwide prevention programs, conducting risk…

  10. 13 CFR 120.1010 - SBA access to SBA Lender, Intermediary, and NTAP files.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA access to SBA Lender, Intermediary, and NTAP files. 120.1010 Section 120.1010 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Risk-Based Lender Oversight Supervision § 120.1010 SBA access to SBA Lender...

  11. SBA - Dynamic Small Business Search

    Science.gov (United States)

    Mobile View Print Exit Help DSBS Quick Market Search TM OnLine DSBS Welcome to the Dynamic Small Business relating to 8(a) Business Development, HUBZone or Small Disadvantaged Business status. The SBA strongly recommends that contracting officers diligently review a bidder's small business self-certification before

  12. 13 CFR 120.1722 - SBA's offset rights.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA's offset rights. 120.1722... of SBA Secondary Market Guarantee Program for First Lien Position 504 Loan Pools § 120.1722 SBA's offset rights. SBA shall have the right to offset any amount owed by Lender to SBA, including, without...

  13. Providing Culturally Competent Care for LGBTQ Youth in School-Based Health Centers: A Needs Assessment to Guide Quality of Care Improvements.

    Science.gov (United States)

    Garbers, Samantha; Heck, Craig J; Gold, Melanie A; Santelli, John S; Bersamin, Melina

    2017-01-01

    School-based health centers (SBHCs) can take specific steps to provide culturally competent care for lesbian, gay, bisexual, transgender, and queer (LGBTQ) youth, potentially impacting well-being. A needs assessment survey was conducted among a convenience sample of SBHC administrators and medical directors to assess climates and actions supportive of LGBTQ quality medical care. Half (53%) of the SBHCs surveyed ( N = 66) reviewed print materials for negative LGBTQ stereotypes, and 27.3% conducted exhaustive materials review. Regional differences were detected: 46.2% of Southern SBHCs conducted any materials review compared to 91.3% in the West and all in the East and Midwest (χ 2 , p LGBTQ youth. On intake forms, 85.4% included preferred names, but only 23.5% included preferred pronoun. There are significant gaps in the extent to which SBHCs provide culturally competent care. These findings can guide future training and advocacy.

  14. Behavioral Approach to Assessment of Youth with Emotional/Behavioral Disorders: A Handbook for School-Based Practitioners. Second Edition.

    Science.gov (United States)

    Breen, Michael J., Ed.; Fiedler, Craig R., Ed.

    The 15 chapters in this book address behavioral approaches to the assessment of youth with emotional and/or behavioral disorders. Chapters have the following titles and authors: (1) "Behavioral Assessment: An Overview" (Catherine Stanger); (2) "Legal and Ethical Issues in the Educational Assessment and Programming for Youth with…

  15. School Based Health Centers

    Science.gov (United States)

    Children's Aid Society, 2012

    2012-01-01

    School Based Health Centers (SBHC) are considered by experts as one of the most effective and efficient ways to provide preventive health care to children. Few programs are as successful in delivering health care to children at no cost to the patient, and where they are: in school. For many underserved children, The Children's Aid Society's…

  16. Findings from the PISA for Development Field Trial of the School-Based Assessment. PISA for Development Brief 16

    Science.gov (United States)

    OECD Publishing, 2017

    2017-01-01

    The PISA for Development (PISA-D) project aims to make PISA more accessible and relevant to middle- and low-income countries by introducing new features to the assessment, including tests that are specially designed to measure lower levels of performance, contextual questionnaires that better reflect the situations of 15-year-olds across a diverse…

  17. 13 CFR 120.1721 - SBA's right to investigate.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA's right to investigate. 120... Establishment of SBA Secondary Market Guarantee Program for First Lien Position 504 Loan Pools § 120.1721 SBA's right to investigate. SBA may undertake such investigation as it deems necessary to determine whether it...

  18. 13 CFR 106.500 - What is SBA's Gift authority?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What is SBA's Gift authority? 106... AND NON-FEE BASED SBA-SPONSORED ACTIVITIES AND GIFTS Gifts § 106.500 What is SBA's Gift authority? This section covers SBA's Gift acceptance authority under sections 4(g), 8(b)(1)(G), 5(b)(9) and 7(k)(2...

  19. Assessing the impact of the primary school-based nutrition intervention Petits cuistots--parents en réseaux.

    Science.gov (United States)

    Bisset, Sherri L; Potvin, Louise; Daniel, Mark; Paquette, Manon

    2008-01-01

    This study sought to provide an intermediate impact assessment of the nutrition intervention Petits cuistots--parents en réseaux (Little Cooks--Parental Networks) on: 1) knowledge, attitude, capacity and experience with regard to nutrition, diet and cookery, and 2) parental and/or family participation in school. A total of 388 students from grades 5 (participants) and 6 (non-participants). The evaluation of the nutrition intervention took place in each of the seven participating elementary schools, all of which are located in Montreal's most disadvantaged neighbourhoods. The program component "Little Cooks" is a nutrition workshop run by community dieticians. Each of the eight annual workshops features a food item and nutrition theme with a recipe for a collective food preparation and tasting experience. Classroom teachers participate to provide classroom management and program support. The "Parental Networks" component of the program invites parents to assist with the nutrition workshop, and offers additional parent and family activities which link to nutrition workshop themes (e.g., dinners or visits to local food producers). The program had some impact on knowledge of the nutrient content of food, food produce and cooking; attitude and experience with tasting of new or less common foods; and perceived cooking capacity. Families with students participating in the program participated more in school activities than did families of students not in the program. Our assessment indicates a potential program impact upon several intermediate impact measures, and in so doing highlights a promising nutrition capacity-promoting intervention.

  20. Assessing "First Mile" Supply Chain Factors Affecting Timeliness of School-Based Deworming Interventions: Supply and Logistics Performance Indicators.

    Science.gov (United States)

    Koporc, Kimberly M; Strunz, Eric; Holloway, Cassandra; Addiss, David G; Lin, William

    2015-12-01

    Between 2007 and 2012, Children Without Worms (CWW) oversaw the Johnson & Johnson (J&J) donation of Vermox (mebendazole) for treatment of school-age children to control soil-transmitted helminthiasis (STH). To identify factors associated with on-time, delayed, or missed mass drug administration (MDA) interventions, and explore possible indicators for supply chain performance for drug donation programs, we reviewed program data for the 14 STH-endemic countries CWW supported during 2007-2012. Data from drug applications, shipping records, and annual treatment reports were tracked using Microsoft Excel. Qualitative data from interviews with key personnel were used to provide additional context on the causes of delayed or missed MDAs. Four possible contributory factors to delayed or missed MDAs were considered: production, shipping, customs clearance, and miscellaneous in-country issues. Coverage rates were calculated by dividing the number of treatments administered by the number of children targeted during the MDA. Of the approved requests for 78 MDAs, 54 MDAs (69%) were successfully implemented during or before the scheduled month. Ten MDAs (13%) were classified as delayed; seven of these were delayed by one month or less. An additional 14 MDAs (18%) were classified as missed. For the 64 on-time or delayed MDAs, the mean coverage was approximately 88%. To continue to assess the supply chain processes and identify areas for improvement, we identified four indicators or metrics for supply chain performance that can be applied across all neglected tropical disease (NTD) drug donation programs: (1) donor having available inventory to satisfy the country request for donation; (2) donor shipping the approved number of doses; (3) shipment arriving at the Central Medical Stores one month in advance of the scheduled MDA date; and (4) country programs implementing the MDA as scheduled.

  1. Functionalized SBA-15 materials for bilirubin adsorption

    Science.gov (United States)

    Tang, Tao; Zhao, Yanling; Xu, Yao; Wu, Dong; Xu, Jun; Deng, Feng

    2011-05-01

    To investigate the driving force for bilirubin adsorption on mesoporous materials, a comparative study was carried out between pure siliceous SBA-15 and three functionalized SBA-15 mesoporous materials: CH 3-SBA-15 (MS), NH 2-SBA-15 (AS), and CH 3/NH 2-SBA-15 (AMS) that were synthesized by one-pot method. The obtained materials exhibited large surface areas (553-810 m 2/g) and pore size (6.6-7.1 nm) demonstrated by XRD and N 2-ad/desorption analysis. The SEM images showed that the materials had similar fiberlike morphology. The functionalization extent was calculated according to 29Si MAS NMR spectra and it was close to the designed value (10%). The synthesized mesoporous materials were used as bilirubin adsorbents and showed higher bilirubin adsorption capacities than the commercial active carbon. The adsorption capacities of amine functionalized samples AMS and AS were larger than those of pure siliceous SBA-15 and MS, indicating that electrostatic interaction was the dominant driving force for bilirubin adsorption on mesoporous materials. Increasing the ionic strength of bilirubin solution by adding NaCl would decrease the bilirubin adsorption capacity of mesoporous material, which further demonstrated that the electrostatic interaction was the dominant driving force for bilirubin adsorption. In addition, the hydrophobic interaction provided by methyl groups could promote the bilirubin adsorption.

  2. 13 CFR 120.460 - What are SBA's additional requirements for SBA Supervised Lenders?

    Science.gov (United States)

    2010-01-01

    ... company and does not have its own board of directors) must adopt an internal control policy which provides... the SBA Supervised Lender regulations that follow. (b) Operations and internal controls. Each SBA... operations, programs, and resources. The internal control policy must, at a minimum: (1) Direct management to...

  3. Assessing the Effectiveness of a School-Based Dental Clinic on the Oral Health of Children Who Lack Access to Dental Care: A Program Evaluation

    Science.gov (United States)

    Carpino, Rachel; Walker, Mary P.; Liu, Ying; Simmer-Beck, Melanie

    2017-01-01

    This program evaluation examines the effectiveness of a school-based dental clinic. A repeated-measures design was used to longitudinally examine secondary data from participants (N = 293). Encounter intensity was developed to normalize data. Multivariate analysis of variance and Kruskal-Wallis test were used to investigate the effect of encounter…

  4. Assessing School-Based Gang Prevention Efforts in Urban Centers: Are These Programs Reaching Those Students Who May Benefit the Most?

    Science.gov (United States)

    Rodriguez, Hector

    2009-01-01

    In recent years, schools have become a focal point for general delinquency and gang prevention programs for a variety of reasons. One premise behind this approach is that schools can serve as ideal settings for providing delinquency and intervention services because youths spend so much time there. School-based gang prevention efforts are supposed…

  5. Assessing the Impact of School-Based Marketing Efforts: A Case Study of a Foreign Language Immersion Program in a School-Choice Environment

    Science.gov (United States)

    Olson Beal, Heather K.; Beal, Brent D.

    2016-01-01

    The marketization of K-12 education has led to an increase in school-based marketing efforts. Relatively little research, however, has examined how public schools market themselves, who is involved in marketing, and how these marketing efforts impact key stakeholders, including school administrators, teachers, students, and parents.We explore…

  6. 13 CFR 120.464 - Reports to SBA.

    Science.gov (United States)

    2010-01-01

    ... submit to SBA a summary of any changes in the SBA Supervised Lender's organization or financing (within... reasons and documentation. The waiver decision of the appropriate Office of Capital Access official in...

  7. 13 CFR 120.150 - What are SBA's lending criteria?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What are SBA's lending criteria... Policies Applying to All Business Loans Credit Criteria for Sba Loans § 120.150 What are SBA's lending... depth of management; (c) Strength of the business; (d) Past earnings, projected cash flow, and future...

  8. 13 CFR 120.601 - SBA Secondary Market.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA Secondary Market. 120.601 Section 120.601 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Secondary Market Fiscal and Transfer Agent (fta) § 120.601 SBA Secondary Market. The SBA secondary market...

  9. 13 CFR 107.1720 - Characteristics of SBA's guarantee.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Characteristics of SBA's guarantee. 107.1720 Section 107.1720 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION SMALL BUSINESS... Characteristics of SBA's guarantee. If SBA agrees to guarantee a Licensee's Debentures or Participating Securities...

  10. 13 CFR 120.395 - What is SBA's collateral position?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What is SBA's collateral position? 120.395 Section 120.395 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Special Purpose Loans Builders Loan Program § 120.395 What is SBA's collateral position? SBA will require...

  11. 13 CFR 120.462 - What are SBA's additional requirements on capital maintenance for SBA Supervised Lenders?

    Science.gov (United States)

    2010-01-01

    ... capital that each SBA Supervised Lender must maintain to protect against the credit risk and other general... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What are SBA's additional requirements on capital maintenance for SBA Supervised Lenders? 120.462 Section 120.462 Business Credit and...

  12. Assessment of Two School-Based Programs to Prevent Universal Eating Disorders: Media Literacy and Theatre-Based Methodology in Spanish Adolescent Boys and Girls

    Directory of Open Access Journals (Sweden)

    Marisol Mora

    2015-01-01

    Full Text Available Aims. To evaluate the long-term effects of two school-based prevention programs administered to a universal mixed-sex sample of school-going adolescents on disturbed eating attitudes, aesthetic ideal internalization, and other eating disorder risk factors, when compared to a control group. Methods. Participants were 200 adolescents aged 12–15 selected by means of incidental sampling from second-year compulsory secondary education at schools. An interactive multimedia media literacy program (ML + NUT, Media Literacy and Nutrition and a program focused on the same topics using dramatic arts (Theatre Alive were applied and compared with a control group. Pretest, posttest (1 month later, and 5- and 13-month follow-up measurements were taken. Analyses were conducted with two-way mixed 3×3 ANCOVA (group × phase adjusted by baseline levels, body mass index, and sex. Results. Participants in both experimental groups showed significantly higher self-esteem scores than the control group over time. The ML + NUT group also presented lower aesthetic ideal internalization scores than the control group. Discussion. Both programs can benefit students’ self-esteem. Moreover, ML + NUT program was useful in reducing thin-ideal internalization. However, differences in body dissatisfaction and disordered eating attitudes were not found. The programs may be protective on the core psychological variables, which are essential to adaptive adolescent development.

  13. 13 CFR 107.630 - Requirement for Licensees to file financial statements with SBA (Form 468).

    Science.gov (United States)

    2010-01-01

    ... Form 468 must be audited by an independent public accountant acceptable to SBA. (2) Insurance requirement for public accountant. Unless SBA approves otherwise, your independent public accountant must...

  14. What would PCR assessment change in the management of fevers in a malaria endemic area? A school-based study in Benin in children with and without fever

    Directory of Open Access Journals (Sweden)

    Faucher Jean-François

    2010-08-01

    Full Text Available Abstract Background A recent school-based study in Benin showed that applying a policy of anti-malarial prescriptions restricted to parasitologically-confirmed cases on the management of fever is safe and feasible. Additional PCR data were analysed in order to touch patho-physiological issues, such as the usefulness of PCR in the management of malaria in an endemic area or the triggering of a malaria attack in children with submicroscopic malaria. Methods PCR data were prospectively collected in the setting of an exposed (with fever/non exposed (without fever study design. All children had a negative malaria rapid diagnostic test (RDT at baseline, were followed up to day 14 and did not receive drugs with anti-malarial activity. The index group was defined by children with fever at baseline and the control group by children without fever at baseline. Children with submicroscopic malaria in these two groups were defined by a positive PCR at baseline. Results PCR was positive in 66 (27% children of the index group and in 104 (44% children of the control group respectively. The only significant factor positively related to PCR positivity at baseline was the clinical status (control group. When definition of malaria attacks included PCR results, no difference of malaria incidence was observed between the index and control groups, neither in the whole cohort, nor in children with submicroscopic malaria. The rate of undiagnosed malaria at baseline was estimated to 3.7% at baseline in the index group. Conclusions Treating all children with fever and a positive PCR would have led to a significant increase of anti-malarial consumption, with few benefits in terms of clinical events. Non malarial fevers do not or do not frequently trigger malaria attacks in children with submicroscopic malaria.

  15. 75 FR 13145 - SBA Lender Risk Rating System

    Science.gov (United States)

    2010-03-18

    ... SMALL BUSINESS ADMINISTRATION [Docket No. SBA-2010-0004] SBA Lender Risk Rating System AGENCY: Small Business Administration. ACTION: Notice; extension of comment period and correction. SUMMARY: On... of Credit Risk Management, U.S. Small Business Administration, 409 Third Street, SW., 8th Floor...

  16. Propene epoxidation over Au/Ti-SBA-15 catalysts

    NARCIS (Netherlands)

    Sacaliuc, E.; Beale, A.M.; Weckhuysen, B.M.; Nijhuis, T.A.

    2007-01-01

    Highly dispersed gold nanoparticles were synthesized within the channels of a mesoporous Ti-SBA-15 support, followed by thorough catalyst characterization and testing in the selective epoxidation of propene to propene oxide. For this purpose, two series of Ti-SBA-15 materials differing in their Ti

  17. 13 CFR 121.103 - How does SBA determine affiliation?

    Science.gov (United States)

    2010-01-01

    ....103 How does SBA determine affiliation? (a) General Principles of Affiliation. (1) Concerns and... the Agricultural Marketing Act (12 U.S.C. 1141j), are not considered affiliated with the cooperative... agreements in principle) to have a present effect on the power to control a concern. SBA treats such options...

  18. Iron-functionalized Al-SBA-15 for benzene hydroxylation

    NARCIS (Netherlands)

    Li, Y.; Xia, H.; Fan, F.; Feng, Z.; Santen, van R.A.; Hensen, E.J.M.; Li, Can

    2008-01-01

    For the first time an ordered mesoporous silica (Fe–Al-SBA-15) with catalytically active isolated Fe surface species for the hydroxylation of benzene with nitrous oxide is prepared by introduction of Fe3+ in the synthesis gel of Al-SBA-15. Graphical abstract image for this article (ID: b717079c)

  19. 13 CFR 120.413 - Advertisement of relationship with SBA.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Advertisement of relationship with SBA. 120.413 Section 120.413 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS... refer in its advertising to its participation with SBA. The advertising may not: (a) State or imply that...

  20. Hydrodeoxygenation of Guaiacol Over Pt/Al-SBA-15 Catalysts.

    Science.gov (United States)

    Yu, Mi Jin; Park, Sung Hoon; Jeon, Jong-Ki; Ryu, Changkook; Sohn, Jung Min; Kim, Sang Chai; Park, Young-Kwon

    2015-01-01

    Upgrading of bio-oil through catalytic hydrodeoxygenation (HDO) reaction was investigated for guaiacol as a model compound. A batch reactor was used for the reaction condition of 40 bar and 250 degrees C. The target product was cyclohexane. Pt/Al-SBA-15 with the Si/Al ratios of 20, 40, and 80 and Pt/HZSM-5 were used as the catalyst. The SBA-15 catalysts were characterized by N2 adsorption-desorption, X-ray diffraction analysis, and temperature programmed desorption of ammonia. The order of cyclohexane yield was Pt/Al-SBA-15 (Si/Al = 20) > Pt/Al-SBA-15(40) > Pt/Al-SBA-15 (80), indicating that the quantity of acid sites plays an important role in the HDO reaction. On the other hand, Pt/HZSM-5 led to a very low cyclohexane yield, in spite of its abundant strong acid sites, due to its small pore size.

  1. Carbon material formation on SBA-15 and Ni-SBA-15 and residue constituents during acetylene decomposition

    Energy Technology Data Exchange (ETDEWEB)

    Chiang, Hung-Lung, E-mail: hlchiang@mail.cmu.edu.tw [Department of Risk Management, China Medical University, Taichung 40402, Taiwan (China); Wu, Trong-Neng [Department of Public Health, China Medical University, Taichung 40402, Taiwan (China); Ho, Yung-Shou [Department of Applied Chemistry and Materials Science, Fooyin University, Kaohsiung 831, Taiwan (China); Zeng, Li-Xuan [Department of Risk Management, China Medical University, Taichung 40402, Taiwan (China)

    2014-07-15

    Highlights: • Acetylene was decomposed on SBA-15 and Ni-SBA-15 at 650–850 °C. • Carbon spheres and filaments were formed after acetylene decomposition. • PAHs were determined in tar and residues. • Exhaust constituents include CO{sub 2}, H{sub 2}, NO{sub x} and hydrocarbon species. - Abstract: Carbon materials including carbon spheres and nanotubes were formed from acetylene decomposition on hydrogen-reduced SBA-15 and Ni-SBA-15 at 650–850 °C. The physicochemical characteristics of SBA-15, Ni-SBA-15 and carbon materials were analyzed by field emission scanning electronic microscopy (FE-SEM), Raman spectrometry, and energy dispersive spectrometry (EDS). In addition, the contents of polyaromatic hydrocarbons (PAHs) in the tar and residue and volatile organic compounds (VOCs) in the exhaust were determined during acetylene decomposition on SBA-15 and Ni-SBA-15. Spherical carbon materials were observed on SBA-15 during acetylene decomposition at 750 and 850 °C. Carbon filaments and ball spheres were formed on Ni-SBA-15 at 650–850 °C. Raman spectroscopy revealed peaks at 1290 (D-band, disorder mode, amorphous carbon) and 1590 (G-band, graphite sp{sup 2} structure) cm{sup −1}. Naphthalene (2 rings), pyrene (4 rings), phenanthrene (3 rings), and fluoranthene (4 rings) were major PAHs in tar and residues. Exhaust constituents of hydrocarbon (as propane), H{sub 2}, and C{sub 2}H{sub 2} were 3.9–2.6/2.7–1.5, 1.4–2.8/2.6–4.3, 4.2–2.4/3.2–1.7% when acetylene was decomposed on SBA-15/Ni-SBA-15, respectively, corresponding to temperatures ranging from 650 to 850 °C. The concentrations of 52 VOCs ranged from 9359 to 5658 and 2488 to 1104 ppm for SBA-15 and Ni-SBA-15 respectively, at acetylene decomposition temperatures from 650 to 850 °C, and the aromatics contributed more than 87% fraction of VOC concentrations.

  2. 13 CFR 120.434 - What are SBA's requirements for loan pledges?

    Science.gov (United States)

    2010-01-01

    ... satisfactory SBA performance, as determined by SBA in its discretion. The Lender's Risk Rating, among other... BUSINESS LOANS Lenders Other Conveyances § 120.434 What are SBA's requirements for loan pledges? (a) Except... 7(a) loan, which consent SBA may withhold in its sole discretion; (b) The Lender must be in good...

  3. Effects of a randomized controlled trial to assess the six-months effects of a school based smoking prevention program in Saudi Arabia.

    Science.gov (United States)

    Mohammed, Mutaz; Eggers, Sander Matthijs; Alotaiby, Fahad F; de Vries, Nanne; de Vries, Hein

    2016-09-01

    To examine the efficacy of a smoking prevention program which aimed to address smoking related cognitions and smoking behavior among Saudi adolescents age 13 to 15. A randomized controlled trial was used. Respondents in the experimental group (N=698) received five in-school sessions, while those in the control group (N=683) received no smoking prevention information (usual curriculum). Post-intervention data was collected six months after baseline. Logistic regression analysis was applied to assess effects on smoking initiation, and linear regression analysis was applied to assess changes in beliefs and analysis of covariance (ANCOVA) was used to assess intervention effects. All analyses were adjusted for the nested structure of students within schools. At post-intervention respondents from the experimental group reported in comparison with those from the control group a significantly more negative attitude towards smoking, stronger social norms against smoking, higher self-efficacy towards non-smoking, more action planning to remain a non-smoker, and lower intentions to smoke in the future. Smoking initiation was 3.2% in the experimental group and 8.8% in the control group (pnon-smoking cognitions and non-smoking behavior. Therefore it is recommended to implement the program at a national level in Saudi-Arabia. Future studies are recommended to assess long term program effects and the conditions favoring national implementation of the program. Copyright © 2016 Elsevier Inc. All rights reserved.

  4. Implication of formative assessment practices among mathematics teacher

    Science.gov (United States)

    Samah, Mas Norbany binti Abu; Tajudin, Nor'ain binti Mohd

    2017-05-01

    Formative assessment of school-based assessment (SBA) is implemented in schools as a move to improve the National Education Assessment System (NEAS). Formative assessment focuses on assessment for learning. There are various types of formative assessment instruments used by teachers of mathematics, namely the form of observation, questioning protocols, worksheets and quizzes. This study aims to help teachers improve skills in formative assessments during the teaching and learning (t&l) Mathematics. One mathematics teacher had been chosen as the study participants. The collecting data using document analysis, observation and interviews. Data were analyzed narrative and assessments can help teachers implement PBS. Formative assessment is conducted to improve the skills of students in t&l effectively.

  5. 13 CFR 120.433 - What are SBA's other requirements for sales and sales of participating interests?

    Science.gov (United States)

    2010-01-01

    ... for sales and sales of participating interests? 120.433 Section 120.433 Business Credit and Assistance... requirements for sales and sales of participating interests? SBA requires the following: (a) The Lender must be... include, but are not limited to, on-site review/examination assessments, historical performance measures...

  6. Protocol for a prospective, school-based standardisation study of a digital social skills assessment tool for children: The Paediatric Evaluation of Emotions, Relationships, and Socialisation (PEERS) study.

    Science.gov (United States)

    Thompson, Emma J; Beauchamp, Miriam H; Darling, Simone J; Hearps, Stephen J C; Brown, Amy; Charalambous, George; Crossley, Louise; Darby, David; Dooley, Julian J; Greenham, Mardee; Jaimangal, Mohinder; McDonald, Skye; Muscara, Frank; Turkstra, Lyn; Anderson, Vicki A

    2018-02-08

    Humans are by nature a social species, with much of human experience spent in social interaction. Unsurprisingly, social functioning is crucial to well-being and quality of life across the lifespan. While early intervention for social problems appears promising, our ability to identify the specific impairments underlying their social problems (eg, social communication) is restricted by a dearth of accurate, ecologically valid and comprehensive child-direct assessment tools. Current tools are largely limited to parent and teacher ratings scales, which may identify social dysfunction, but not its underlying cause, or adult-based experimental tools, which lack age-appropriate norms. The present study describes the development and standardisation of Paediatric Evaluation of Emotions, Relationships, and Socialisation ( PEERS®), an iPad-based social skills assessment tool. The PEERS project is a cross-sectional study involving two groups: (1) a normative group, recruited from early childhood, primary and secondary schools across metropolitan and regional Victoria, Australia; and (2) a clinical group, ascertained from outpatient services at The Royal Children's Hospital Melbourne (RCH). The project aims to establish normative data for PEERS®, a novel and comprehensive app-delivered child-direct measure of social skills for children and youth. The project involves recruiting and assessing 1000 children aged 4.0-17.11 years. Assessments consist of an intellectual screen, PEERS® subtests, and PEERS-Q, a self-report questionnaire of social skills. Parents and teachers also complete questionnaires relating to participants' social skills. Main analyses will comprise regression-based continuous norming, factor analysis and psychometric analysis of PEERS® and PEERS-Q. Ethics approval has been obtained through the RCH Human Research Ethics Committee (34046), the Victorian Government Department of Education and Early Childhood Development (002318), and Catholic Education

  7. Assessing the impact of a school-based latrine cleaning and handwashing program on pupil absence in Nyanza Province, Kenya: a cluster-randomized trial.

    Science.gov (United States)

    Caruso, Bethany A; Freeman, Matthew C; Garn, Joshua V; Dreibelbis, Robert; Saboori, Shadi; Muga, Richard; Rheingans, Richard

    2014-10-01

    Improving school water, sanitation and hygiene (WASH) conditions reduces pupil absence and illness. However, these benefits may depend on the conditions of the latrines and availability of consumables. We sought to determine whether a low-cost, policy-relevant, environmental-level latrine cleaning intervention could improve latrine cleanliness, increase its use and reduce absenteeism. In a three-arm, cluster-randomized trial we assessed absence via periodical roll-call among 17 564 pupils in 60 schools that had previously received WASH improvements as part of the SWASH+ project. Latrine conditions and use were also assessed using structured observation. Latrine cleanliness increased significantly during the post-intervention period among schools receiving the latrine cleaning package compared to controls, as did handwashing with soap. We found no difference in latrine use and absence across arms. The additive impact of cleaning may not have been strong enough to impact absence above and beyond reductions attributable to the original WASH infrastructure improvements and basic hygiene education the schools previously received. Improving latrine conditions is important for the dignity and well-being of pupils, and investments and strategies are necessary to ensure that school toilets are clean and pupil-friendly. © 2014 John Wiley & Sons Ltd.

  8. Preparation and characterization of catalyst 20% Co/SBA-15

    International Nuclear Information System (INIS)

    Lima, L.A.; Nogueira, A.C.; Rodrigues, J.J.; Rodrigues, M.G.F.

    2012-01-01

    The utilization of molecular sieves as supports for cobalt catalysts are promising. SBA-15 is a class of mesoporous silicate with a high thermal stability and high degree of structural order, which confers an important feature for the catalytic process. It was prepared SBA-15 molecular sieve with molar composition: 1.0 TEOS: 0017P123: 5.7 HCl: 193 H2O. The deposition of cobalt on the substrate SBA-15 was performed by wet impregnation, using a solution of 0.1M cobalt nitrate. The materials were characterized by the techniques of X-Ray Diffraction (XRD), chemical analysis by X-Ray Spectrometry by Energy Dispersive (EDX), and nitrogen adsorption (BET). By XRD and BET verified the formation of SBA-15, and after the impregnation there was no change in the structure, with EDX showed that the impregnation method is efficient, the sample showed cobalt content close to the nominal value. (author)

  9. Assessing the impact of a school-based safe water intervention on household adoption of point-of-use water treatment practices in southern India.

    Science.gov (United States)

    Freeman, Matthew C; Clasen, Thomas

    2011-03-01

    We assessed a pilot project by UNICEF and Hindustan Unilever Limited to improve the quality of drinking water for children in schools through adoption of improved drinking water practices among households in southern India. The intervention consisted of providing classrooms of 200 schools a commercial water purifier, and providing basic hygiene and water treatment information to students, parents, and teachers. We found no evidence that the intervention was effective in improving awareness or uptake of effective water treatment practices at home. A similar proportion of household members in the intervention and control groups boiled their water (P = 0.60), used a ceramic filtration system (P = 0.33), and used a cloth filter (P = 0.89). One year after the launch of the campaign, household ownership of the commercial purifier promoted at schools was higher in the intervention group (26%) than the control group (19%), but this difference was not statistically significant (P = 0.53).

  10. Assessing the sustained impact of a school-based obesity prevention program for adolescent boys: the ATLAS cluster randomized controlled trial.

    Science.gov (United States)

    Lubans, David R; Smith, Jordan J; Plotnikoff, Ronald C; Dally, Kerry A; Okely, Anthony D; Salmon, Jo; Morgan, Philip J

    2016-08-20

    Obesity prevention interventions targeting 'at-risk' adolescents are urgently needed. The aim of this study is to evaluate the sustained impact of the 'Active Teen Leaders Avoiding Screen-time' (ATLAS) obesity prevention program. Cluster RCT in 14 secondary schools in low-income communities of New South Wales, Australia. Participants were 361 adolescent boys (aged 12-14 years) 'at risk' of obesity. The intervention was based on Self-Determination Theory and Social Cognitive Theory and involved: professional development, fitness equipment for schools, teacher-delivered physical activity sessions, lunch-time activity sessions, researcher-led seminars, a smartphone application, and parental strategies. Assessments for the primary (body mass index [BMI], waist circumference) and secondary outcomes were conducted at baseline, 8- (post-intervention) and 18-months (follow-up). Analyses followed the intention-to-treat principle using linear mixed models. After 18-months, there were no intervention effects for BMI or waist circumference. Sustained effects were found for screen-time, resistance training skill competency, and motivational regulations for school sport. There were no clinically meaningful intervention effects for the adiposity outcomes. However, the intervention resulted in sustained effects for secondary outcomes. Interventions that more intensively target the home environment, as well as other socio-ecological determinants of obesity may be needed to prevent unhealthy weight gain in adolescents from low-income communities. Australian Clinical Trial Registry ACTRN12612000978864.

  11. Assessing “First Mile” Supply Chain Factors Affecting Timeliness of School-Based Deworming Interventions: Supply and Logistics Performance Indicators

    Science.gov (United States)

    Koporc, Kimberly M.; Strunz, Eric; Holloway, Cassandra; Addiss, David G.; Lin, William

    2015-01-01

    Background Between 2007 and 2012, Children Without Worms (CWW) oversaw the Johnson & Johnson (J&J) donation of Vermox (mebendazole) for treatment of school-age children to control soil-transmitted helminthiasis (STH). To identify factors associated with on-time, delayed, or missed mass drug administration (MDA) interventions, and explore possible indicators for supply chain performance for drug donation programs, we reviewed program data for the 14 STH-endemic countries CWW supported during 2007–2012. Methodology Data from drug applications, shipping records, and annual treatment reports were tracked using Microsoft Excel. Qualitative data from interviews with key personnel were used to provide additional context on the causes of delayed or missed MDAs. Four possible contributory factors to delayed or missed MDAs were considered: production, shipping, customs clearance, and miscellaneous in-country issues. Coverage rates were calculated by dividing the number of treatments administered by the number of children targeted during the MDA. Principal Findings Of the approved requests for 78 MDAs, 54 MDAs (69%) were successfully implemented during or before the scheduled month. Ten MDAs (13%) were classified as delayed; seven of these were delayed by one month or less. An additional 14 MDAs (18%) were classified as missed. For the 64 on-time or delayed MDAs, the mean coverage was approximately 88%. Conclusions and Significance To continue to assess the supply chain processes and identify areas for improvement, we identified four indicators or metrics for supply chain performance that can be applied across all neglected tropical disease (NTD) drug donation programs: (1) donor having available inventory to satisfy the country request for donation; (2) donor shipping the approved number of doses; (3) shipment arriving at the Central Medical Stores one month in advance of the scheduled MDA date; and (4) country programs implementing the MDA as scheduled. PMID:26657842

  12. One-dimensional ferromagnetic array compound [Co3(SBA)2(OH)2(H2O)2]n, (SBA = 4-sulfobenzoate)

    Science.gov (United States)

    Honda, Zentaro; Nomoto, Naoyuki; Fujihara, Takashi; Hagiwara, Masayuki; Kida, Takanori; Sawada, Yuya; Fukuda, Takeshi; Kamata, Norihiko

    2018-06-01

    We report on the syntheses, crystal structure, and magnetic properties of the transition metal coordination polymer [Co3(SBA)2(OH)2(H2O)2]n, (SBA = 4-sulfobenzoate) in which CoO6 octahedra are linked through their edges, forming one-dimensional (1D) Co(II) arrays running along the crystal a-axis. These arrays are further perpendicularly bridged by SBA ligand to construct a three-dimensional framework. Its magnetic properties have been investigated, and ferromagnetic interactions within the arrays have been found. From heat capacity measurements, we have found that this compound exhibits a three-dimensional ferromagnetic phase transition at TC = 1.54 K, and the specific heat just above TC shows a Schottky anomaly which originates from an energy gap caused by uniaxial magnetic anisotropy. These results suggest that [Co3(SBA)2(OH)2(H2O)2]n consists of weakly coupled 1D ferromagnetic Ising arrays.

  13. Attitude of teachers to school based adolescent reproductive health ...

    African Journals Online (AJOL)

    Adults may facilitate or obstruct healthy sexual behaviours by adolescents; hence information on their attitude towards adolescent sexual behaviour, including contraceptive use is important. The attitude of teachers to school-based adolescent reproductive health services was assessed among two hundred and twenty three ...

  14. Advancing School-Based Interventions through Economic Analysis

    Science.gov (United States)

    Olsson, Tina M.; Ferrer-Wreder, Laura; Eninger, Lilianne

    2014-01-01

    Commentators interested in school-based prevention programs point to the importance of economic issues for the future of prevention efforts. Many of the processes and aims of prevention science are dependent upon prevention resources. Although economic analysis is an essential tool for assessing resource use, the attention given economic analysis…

  15. School-based travel : a mobility assessment

    Science.gov (United States)

    2011-02-01

    This project contributes to developing a technical infrastructure to support the Safe Routes to School (SRTS) Program, : specifically to monitor its growth and to evaluate its effectiveness. Since its inception in 2005, the SRTS program : mandated by...

  16. Changes in adolescents' intake of sugar-sweetened beverages and sedentary behaviour: Results at 8 month mid-way assessment of the HEIA study - a comprehensive, multi-component school-based randomized trial

    Directory of Open Access Journals (Sweden)

    Andersen Lene F

    2011-06-01

    Full Text Available Abstract Background Inconsistent effects of school-based obesity prevention interventions may be related to how different subgroups receive them. The aim of this study was to evaluate the effect of an intervention program, including fact sheets to parents and classroom components, on intake of sugar-sweetened beverages (SSB and screen time. Further, to explore whether potential effects and parental involvement varied by adolescents' gender, weight status (WS and parental educational level. Methods In total, 1465 11-year-olds participated at the pre-test and the 8 month mid-way assessment of the HEIA study. Parents (n = 349 contributed with process evaluation data. Self-reported intake of SSB was collected from the 11-year-olds assessing frequency and amount, while time used on watching TV/DVD and computer/game-use (weekday and weekend day were assed by frequency measures. Data on awareness of the intervention and dose received were collected from parents. Covariance analyses (ANCOVA were conducted testing for effects by gender and for moderation by WS and parental education. Results Time spent on TV/DVD (week p = 0.001, weekend p = 0.03 and computer/game-use (week p = 0.004, weekend p Conclusions The preventive initiatives appeared to change behaviour in girls only. This study suggests that exploration of potential beneficial or negative effects of intervention in subgroups is important. In formative evaluation of obesity prevention studies it seems warranted to include issues related to gender, WS and parental involvement in order to enhance the effectiveness of preventive initiatives.

  17. Parent Interest in a School-Based, School Nurse-Led Weight Management Program

    Science.gov (United States)

    Kubik, Martha Y.; Lee, Jiwoo

    2014-01-01

    Because one in three children is already overweight or obese, school-based interventions targeting secondary obesity prevention merit consideration. This study assessed parent interest in participating in a school-based, school nurse-led weight management program for young school-aged children. A random sample of parents ("n" = 122) of…

  18. In Situ Loading of Drugs into Mesoporous Silica SBA-15.

    Science.gov (United States)

    Wan, Mi Mi; Li, Yan Yan; Yang, Tian; Zhang, Tao; Sun, Xiao Dan; Zhu, Jian Hua

    2016-04-25

    In a new strategy for loading drugs into mesoporous silica, a hydrophilic (heparin) or hydrophobic drug (ibuprofen) is encapsulated directly in a one-pot synthesis by evaporation-induced self-assembly. In situ drug loading significantly cuts down the preparation time and dramatically increases the loaded amount and released fraction of the drug, and appropriate drug additives favor a mesoporous structure of the vessels. Drug loading was verified by FTIR spectroscopy and release tests, which revealed much longer release with a larger amount of heparin or ibuprofen compared to postloaded SBA-15. Besides, the in vitro anticoagulation properties of the released heparin and the biocompatibility of the vessels were carefully assessed, including activated partial thromboplastin time, thrombin time, hemolysis, platelet adhesion experiments, and the morphologies of red blood cells. A concept of new drug-release agents with soft core and hard shell is proposed and offers guidance for the design of novel drug-delivery systems. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. 13 CFR 101.401 - What programs and activities of SBA are subject to this subpart?

    Science.gov (United States)

    2010-01-01

    ... ADMINISTRATION ADMINISTRATION Intergovernmental Partnership § 101.401 What programs and activities of SBA are subject to this subpart? SBA publishes in the Federal Register a list of programs and activities subject...

  20. 13 CFR 120.1500 - Types of enforcement actions-SBA Lenders.

    Science.gov (United States)

    2010-01-01

    ... general partner, a manager, an employee, an agent or other participant in the affairs of an SBA Lender's... termination. SBA may institute a civil action to terminate the rights, privileges, and franchises of an SBLC...

  1. 13 CFR 107.1570 - Distributions by Licensee-optional Distribution to private investors and SBA.

    Science.gov (United States)

    2010-01-01

    ... Distribution to private investors and SBA. 107.1570 Section 107.1570 Business Credit and Assistance SMALL... private investors and SBA. If you have outstanding Participating Securities or Earmarked Assets, you may... and your private investors in proportion to the capital contributions of each. You must notify SBA of...

  2. 13 CFR 107.1600 - SBA authority to issue and guarantee Trust Certificates.

    Science.gov (United States)

    2010-01-01

    ... ADMINISTRATION SMALL BUSINESS INVESTMENT COMPANIES SBA Financial Assistance for Licensees (Leverage) Funding... guarantee by SBA of such TC is limited to the principal and interest due on the Debentures or the Redemption... to arrange public or private fundings of Leverage. SBA in its discretion may arrange for public or...

  3. 13 CFR 108.1600 - SBA authority to issue and guarantee Trust Certificates.

    Science.gov (United States)

    2010-01-01

    ... ADMINISTRATION NEW MARKETS VENTURE CAPITAL (âNMVCâ) PROGRAM SBA Financial Assistance for NMVC Companies (Leverage... limited to the principal and interest due on the Debentures in any Trust or Pool backing such TC. The full... of any TC. (b) SBA authority to arrange public or private fundings of Leverage. SBA in its discretion...

  4. 13 CFR 120.521 - What interest rate applies after SBA purchases its guaranteed portion?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What interest rate applies after... 504 Loans Sba's Purchase of A Guaranteed Portion § 120.521 What interest rate applies after SBA purchases its guaranteed portion? When SBA purchases the guaranteed portion of a fixed interest rate loan...

  5. 13 CFR 120.620 - SBA guarantee of a Pool Certificate.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA guarantee of a Pool Certificate. 120.620 Section 120.620 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Secondary Market The Sba Guarantee of A Certificate § 120.620 SBA guarantee of a Pool Certificate...

  6. 13 CFR 120.1719 - SBA's right to recover from Seller.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA's right to recover from Seller. 120.1719 Section 120.1719 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Establishment of SBA Secondary Market Guarantee Program for First Lien Position 504 Loan Pools § 120.1719 SBA's...

  7. 13 CFR 120.621 - SBA guarantee of an Individual Certificate.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA guarantee of an Individual Certificate. 120.621 Section 120.621 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Secondary Market The Sba Guarantee of A Certificate § 120.621 SBA guarantee of an Individual...

  8. 13 CFR 120.1850 - Will the Collateral be held by SBA?

    Science.gov (United States)

    2010-01-01

    ... Loan Program) § 120.1850 Will the Collateral be held by SBA? Yes, SBA or its expressly authorized agent... all Collateral for SISMBD Loans in a custodial account. Certificates held as Collateral must be in... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Will the Collateral be held by SBA...

  9. 13 CFR 123.513 - Does SBA require collateral on its Military Reservist EIDL?

    Science.gov (United States)

    2010-01-01

    ..., or both. SBA will not decline a loan if you do not have a particular amount of collateral so long as SBA is reasonably sure that you can repay the loan. If you refuse to pledge the available collateral... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Does SBA require collateral on its...

  10. Implementation of school based physical activity interventions: a systematic review.

    Science.gov (United States)

    Naylor, Patti-Jean; Nettlefold, Lindsay; Race, Douglas; Hoy, Christa; Ashe, Maureen C; Wharf Higgins, Joan; McKay, Heather A

    2015-03-01

    Implementation science is an emerging area in physical activity (PA) research. We sought to establish the current state of the evidence related to implementation of school-based PA models to explore 1) the relationship between implementation and health outcomes, and 2) factors that influence implementation. We searched 7 electronic databases (1995-2014) and included controlled studies of school-based PA programmes for healthy youth (6-18 y) measuring at least one physical health-related outcome. For objective 1, studies linked implementation level to student-level health outcome(s). For objective 2, studies reported factors associated with implementation. There was substantial variability in how health outcomes and implementation were assessed. Few studies linked implementation and health outcomes (n=15 interventions). Most (11/15) reported a positive relationship between implementation and at least one health outcome. Implementation factors were reported in 29 interventions. Of 22 unique categories, time was the most prevalent influencing factor followed by resource availability/quality and supportive school climate. Implementation evaluation supports scale-up of effective school-based PA interventions and thus population-level change. Our review serves as a call to action to 1) address the link between implementation and outcome within the school-based PA literature and 2) improve and standardize definitions and measurement of implementation. Copyright © 2015 Elsevier Inc. All rights reserved.

  11. Changes in adolescents' intake of sugar-sweetened beverages and sedentary behaviour: results at 8 month mid-way assessment of the HEIA study--a comprehensive, multi-component school-based randomized trial.

    Science.gov (United States)

    Bjelland, Mona; Bergh, Ingunn H; Grydeland, May; Klepp, Knut-Inge; Andersen, Lene F; Anderssen, Sigmund A; Ommundsen, Yngvar; Lien, Nanna

    2011-06-17

    Inconsistent effects of school-based obesity prevention interventions may be related to how different subgroups receive them. The aim of this study was to evaluate the effect of an intervention program, including fact sheets to parents and classroom components, on intake of sugar-sweetened beverages (SSB) and screen time. Further, to explore whether potential effects and parental involvement varied by adolescents' gender, weight status (WS) and parental educational level. In total, 1465 11-year-olds participated at the pre-test and the 8 month mid-way assessment of the HEIA study. Parents (n = 349) contributed with process evaluation data. Self-reported intake of SSB was collected from the 11-year-olds assessing frequency and amount, while time used on watching TV/DVD and computer/game-use (weekday and weekend day) were assed by frequency measures. Data on awareness of the intervention and dose received were collected from parents. Covariance analyses (ANCOVA) were conducted testing for effects by gender and for moderation by WS and parental education. Time spent on TV/DVD (week p = 0.001, weekend p = 0.03) and computer/game-use (week p = 0.004, weekend p effects of the intervention were found for boys, but moderation effects were found for WS (week days: TV/DVD, p = 0.03 and computer/games, p = 0.02). There were no moderating effects of parental education for neither boys nor girls with respect to intake of SSB, time used for watching TV/DVD and computer/game-use. Parental awareness of the intervention was significantly higher among the parents of girls, while the parents of boys were more satisfied with the fact sheets. The preventive initiatives appeared to change behaviour in girls only. This study suggests that exploration of potential beneficial or negative effects of intervention in subgroups is important. In formative evaluation of obesity prevention studies it seems warranted to include issues related to gender, WS and parental involvement in order to

  12. Organically functionalized mesoporous SBA-15 as sorbents for removal of selected pharmaceuticals from water

    Energy Technology Data Exchange (ETDEWEB)

    Bui, Tung Xuan [School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712 (Korea, Republic of); Kang, Seo-Young [International Environmental Research Center (IERC), Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712 (Korea, Republic of); Lee, Sang-Hyup [Water Environment Center, Korea Institute of Science and Technology, Cheongryang, Seoul 130-650 (Korea, Republic of); Choi, Heechul, E-mail: hcchoi@gist.ac.kr [School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712 (Korea, Republic of)

    2011-10-15

    Highlights: {yields} SBA-15 grafted with aminopropyl, hydroxymethyl, and trimethylsilyl groups as sorbents. {yields} Sorbents for removal of a mixture of 12 pharmaceuticals from water. {yields} Hydroxymethyl-SBA-15 shows similar adsorption efficiency like SBA-15. {yields} Aminopropyl-SBA-15 makes increase for clofibric acid, diclofenac, decrease for atenolol, estrone, trimethoprim. {yields} Trimethylsilyl-SBA-15 makes increase for 9 compounds; 7 compounds from 70.6% to 98.9%. - Abstract: Mesoporous silica SBA-15 and its postfunctionalized counterparts with hydroxymethyl (HM-SBA-15), aminopropyl (AP-SBA-15), and trimethylsilyl (TMS-SBA-15) were prepared and characterized by powder X-ray diffraction, N{sub 2} adsorption-desorption measurement, Fourier-transform infrared spectroscopy, and elemental analysis. The removal of a mixture of 12 selected pharmaceuticals was investigated by batch adsorption experiments onto SBA-15 and the grafted materials. SBA-15 showed to have moderate adsorption affinity with amino-containing (atenolol, trimethoprim) and hydrophobic pharmaceuticals, but it displayed minimal adsorption affinity toward hydrophilic compounds. HM-SBA-15 was analogous with SBA-15 in terms of the adsorption efficiency toward all pharmaceuticals. AP-SBA-15 exhibited an increase in the adsorption of two acidic compounds (clofibric acid, diclofenac) but a decrease in the adsorption of estrone and the two amino-containing compounds. Among the grafted materials, TMS-SBA-15 had the highest adsorption affinity toward most pharmaceuticals. Moreover, the adsorption of nine pharmaceuticals to TMS-SBA-15 was significantly higher than that to SBA-15; seven of which showed the removal percentages from 70.6% to 98.9% onto TMS-SBA-15. The number of pharmaceuticals showing high adsorption efficiency onto TMS-SBA-15 did not alter significantly as the pH changed in the range of 5.5-7.6. The results suggest that TMS-SBA-15 is a promising material for the removal of pharmaceuticals

  13. Organically functionalized mesoporous SBA-15 as sorbents for removal of selected pharmaceuticals from water

    International Nuclear Information System (INIS)

    Bui, Tung Xuan; Kang, Seo-Young; Lee, Sang-Hyup; Choi, Heechul

    2011-01-01

    Highlights: → SBA-15 grafted with aminopropyl, hydroxymethyl, and trimethylsilyl groups as sorbents. → Sorbents for removal of a mixture of 12 pharmaceuticals from water. → Hydroxymethyl-SBA-15 shows similar adsorption efficiency like SBA-15. → Aminopropyl-SBA-15 makes increase for clofibric acid, diclofenac, decrease for atenolol, estrone, trimethoprim. → Trimethylsilyl-SBA-15 makes increase for 9 compounds; 7 compounds from 70.6% to 98.9%. - Abstract: Mesoporous silica SBA-15 and its postfunctionalized counterparts with hydroxymethyl (HM-SBA-15), aminopropyl (AP-SBA-15), and trimethylsilyl (TMS-SBA-15) were prepared and characterized by powder X-ray diffraction, N 2 adsorption-desorption measurement, Fourier-transform infrared spectroscopy, and elemental analysis. The removal of a mixture of 12 selected pharmaceuticals was investigated by batch adsorption experiments onto SBA-15 and the grafted materials. SBA-15 showed to have moderate adsorption affinity with amino-containing (atenolol, trimethoprim) and hydrophobic pharmaceuticals, but it displayed minimal adsorption affinity toward hydrophilic compounds. HM-SBA-15 was analogous with SBA-15 in terms of the adsorption efficiency toward all pharmaceuticals. AP-SBA-15 exhibited an increase in the adsorption of two acidic compounds (clofibric acid, diclofenac) but a decrease in the adsorption of estrone and the two amino-containing compounds. Among the grafted materials, TMS-SBA-15 had the highest adsorption affinity toward most pharmaceuticals. Moreover, the adsorption of nine pharmaceuticals to TMS-SBA-15 was significantly higher than that to SBA-15; seven of which showed the removal percentages from 70.6% to 98.9% onto TMS-SBA-15. The number of pharmaceuticals showing high adsorption efficiency onto TMS-SBA-15 did not alter significantly as the pH changed in the range of 5.5-7.6. The results suggest that TMS-SBA-15 is a promising material for the removal of pharmaceuticals from aqueous phase

  14. Desidratação de etanol sobre material nanoestruturado do tipo LaSBA-15 Ethanol dehydration over LaSBA-15 nanostrutured material

    Directory of Open Access Journals (Sweden)

    Geraldo E. Luz Jr

    2010-01-01

    Full Text Available La-incorporated SBA-15 mesopourous molecular sieves (LaSBA-15 were directly synthesized with aim to convert ethanol to ethylene. The samples were characterized by XRD, XRF, nitrogen sorption and acidity, by thermodesorption of n-buthylamine. The results have indicated that all the samples have showed high ordered mesostructure with a large average pore size, and that the lanthanum incorporation has caused an increase in the acidity of the SBA-15. The LaSBA-15 samples have improved, with low deactivation rate, the conversion of the ethanol to water, ether, acetaldehyde and ethylene. In addition, they have increased the ethylene selectivity.

  15. Textural and morphological studies of transition metal doped SBA ...

    Indian Academy of Sciences (India)

    J. Chem. Sci. Vol. 127, No. 5, May 2015, pp. 909–919. c Indian Academy of Sciences. ... The difference in hydrolysis rates of metal and silica precursors have led to textural ... tures of mesoporous SBA-15.13 General shape-selective.

  16. Grafting of alumina on SBA-15: Effect of surface roughness

    Czech Academy of Sciences Publication Activity Database

    Zukal, Arnošt; Šiklová, Helena; Čejka, Jiří

    2008-01-01

    Roč. 24, č. 17 (2008), s. 9837-9842 ISSN 0743-7463 R&D Projects: GA AV ČR KAN100400701 Institutional research plan: CEZ:AV0Z40400503 Keywords : alumina-grafted materials * SBA-15 * Nitrogen adsorption Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 4.097, year: 2008

  17. Sulfated zirconia modified SBA-15 catalysts for cellobiose hydrolysis

    NARCIS (Netherlands)

    Degirmenci, V.; Uner, D.; Cinlar, B.; Shanks, B.H.; Yilmaz, A.; Santen, van R.A.; Hensen, E.J.M.

    2011-01-01

    Zirconia modified SBA-15 becomes a very active catalyst for the selective hydrolysis of cellobiose to glucose after sulfation. Spectroscopic investigations indicate the presence of Brønsted acid sites with similar properties to those present in conventional sulfated zirconia. Indications are found

  18. Characterization and comprehension of zeolite NaY/mesoporous SBA-15 composite as adsorbent for paraquat

    Energy Technology Data Exchange (ETDEWEB)

    Osakoo, Nattawut, E-mail: natawut.work@gmail.com [School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 (Thailand); Pansakdanon, Chaianun [School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 (Thailand); Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190 (Thailand); Sosa, Narongrit; Deekamwong, Krittanun; Keawkumay, Chalermpan; Rongchapo, Wina [School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 (Thailand); Chanlek, Narong [Synchrotron Light Research Institute, Nakhon Ratchasima, 30000 (Thailand); Jitcharoen, Juthamas [Department of Chemistry, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani, 34190 (Thailand); Prayoonpokarach, Sanchai [School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 (Thailand); Wittayakun, Jatuporn, E-mail: jatuporn@g.sut.ac.th [School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000 (Thailand)

    2017-06-01

    NaY was synthesized from fumed silica and further modified to form a composite with SBA-15. Textural properties and basicity of the composite NaY-SBA-15 were between those of the parent materials. Paraquat adsorption on NaY was 204.1 mg/g, higher than that on NaY synthesized with rice husk silica from the previous work. SBA-15 was a poor adsorbent for paraquat. Based on the weight of NaY, the adsorption capacity of analytical-grade paraquat on the NaY-SBA-15 composite was 241.5 mg/g-NaY. Moreover, the composite adsorbed blue dye from a commercial grade paraquat. Interaction between the NaY-SBA-15 and paraquat could be from C and N atoms in paraquat with oxygen atom on NaY-SBA-15. - Highlights: • Zeolite NaY/mesoporous SBA-15 composite was synthesized with a simple method. • NaY and SBA-15 coexisted in the composite confirmed by FTIR, CO{sub 2}-TPD and XPS. • Adsorption capacity of paraquat (mg/g-NaY) was improved by NaY and SBA-15 composite. • C and N atoms in paraquat could interact with oxygen atom on NaY-SBA-15 composite.

  19. Understanding Ethics in School-Based Research

    Science.gov (United States)

    Bryan, Hazel; Burstow, Bob

    2018-01-01

    The notion of the "teacher as researcher" has been in the education lexicon since the mid-1970s. School-based research, we suggest, is currently enjoying something of a renaissance, flourishing within the emerging, complex school landscape. This empirical research engages with 25 school leaders to explore the ways in which…

  20. Rational Thinking in School-Based Practice

    Science.gov (United States)

    Clark, Mary Kristen; Flynn, Perry

    2011-01-01

    Purpose: We reflect on Alan Kamhi's (2011) prologue on balancing certainty and uncertainty as it pertains to school-based practice. Method: In schools, rational thinking depends on effective team processes, much like professional learning communities. We consider the conditions that are required for rational thinking and how rational team dialogue…

  1. School-Based Management: Theory and Practice.

    Science.gov (United States)

    George, Patricia, Ed.; Potter, Eugenia Cooper, Ed.

    School-based management (SBM), sometimes called site-based management, is fast becoming the hottest restructuring item in the arsenal of reformers, teachers' unions, governors, and legislators who want to change the traditional ways in which schools and school districts do business. This document comprises three main sections with contributions…

  2. School-Based Child Abuse Prevention Programs

    Science.gov (United States)

    Brassard, Marla R.; Fiorvanti, Christina M.

    2015-01-01

    Child abuse is a leading cause of emotional, behavioral, and health problems across the lifespan. It is also preventable. School-based abuse prevention programs for early childhood and elementary school children have been found to be effective in increasing student knowledge and protective behaviors. The purpose of this article is to help school…

  3. Preparation of Pd-Diimine@SBA-15 and Its Catalytic Performance for the Suzuki Coupling Reaction

    Directory of Open Access Journals (Sweden)

    Jiahuan Yu

    2016-11-01

    Full Text Available A highly efficient and stable Pd-diimine@SBA-15 catalyst was successfully prepared by immobilizing Pd onto diimine-functionalized mesoporous silica SBA-15. With the help of diimine functional groups grafted onto the SBA-15, Pd could be anchored on a support with high dispersion. Pd-diimine@SBA-15 catalyst exhibited excellent catalytic performance for the Suzuki coupling reaction of electronically diverse aryl halides and phenylboronic acid under mild conditions with an ultralow amount of Pd (0.05 mol % Pd. When the catalyst amount was increased, it could catalyze the coupling reaction of chlorinated aromatics with phenylboronic acid. Compared with the catalytic performances of Pd/SBA-15 and Pd-diimine@SiO2 catalysts, the Pd-diimine@SBA-15 catalyst exhibited higher hydrothermal stability and could be repeatedly used four times without a significant decrease of its catalytic activity.

  4. Adsorptive removal of selected pharmaceuticals by mesoporous silica SBA-15

    International Nuclear Information System (INIS)

    Bui, Tung Xuan; Choi, Heechul

    2009-01-01

    The removal of five selected pharmaceuticals, viz., carbamazepine, clofibric acid, diclofenac, ibuprofen, and ketoprofen was examined by batch sorption experiments onto a synthesized mesoporous silica SBA-15. SBA-15 was synthesized and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N 2 adsorption-desorption measurement, and point of zero charge (PZC) measurement. Pharmaceutical adsorption kinetics was rapid and occurred on a scale of minutes, following a pseudo-second-order rate expression. Adsorption isotherms were best fitted by the Freundlich isotherm model. High removal rates of individual pharmaceuticals were achieved in acidic media (pH 3-5) and reached 85.2% for carbamazepine, 88.3% for diclofenac, 93.0% for ibuprofen, 94.3% for ketoprofen, and 49.0% for clofibric acid at pH 3 but decreased with increase in pH. SBA-15 also showed high efficiency for removal of a mixture of 5 pharmaceuticals. Except for clofibric acid (35.6%), the removal of pharmaceuticals in the mixture ranged from 75.2 to 89.3%. Based on adsorption and desorption results, the mechanism of the selected pharmaceuticals was found to be a hydrophilic interaction, providing valuable information for further studies to design materials for the purpose. The results of this study suggest that mesoporous-silica-based materials are promising adsorbents for removing pharmaceuticals from not only surface water but also wastewater of pharmaceutical industrial manufactures.

  5. Adsorptive removal of selected pharmaceuticals by mesoporous silica SBA-15

    Energy Technology Data Exchange (ETDEWEB)

    Bui, Tung Xuan, E-mail: bxtung@gist.ac.kr [Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712 (Korea, Republic of); Choi, Heechul, E-mail: hcchoi@gist.ac.kr [Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712 (Korea, Republic of)

    2009-09-15

    The removal of five selected pharmaceuticals, viz., carbamazepine, clofibric acid, diclofenac, ibuprofen, and ketoprofen was examined by batch sorption experiments onto a synthesized mesoporous silica SBA-15. SBA-15 was synthesized and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N{sub 2} adsorption-desorption measurement, and point of zero charge (PZC) measurement. Pharmaceutical adsorption kinetics was rapid and occurred on a scale of minutes, following a pseudo-second-order rate expression. Adsorption isotherms were best fitted by the Freundlich isotherm model. High removal rates of individual pharmaceuticals were achieved in acidic media (pH 3-5) and reached 85.2% for carbamazepine, 88.3% for diclofenac, 93.0% for ibuprofen, 94.3% for ketoprofen, and 49.0% for clofibric acid at pH 3 but decreased with increase in pH. SBA-15 also showed high efficiency for removal of a mixture of 5 pharmaceuticals. Except for clofibric acid (35.6%), the removal of pharmaceuticals in the mixture ranged from 75.2 to 89.3%. Based on adsorption and desorption results, the mechanism of the selected pharmaceuticals was found to be a hydrophilic interaction, providing valuable information for further studies to design materials for the purpose. The results of this study suggest that mesoporous-silica-based materials are promising adsorbents for removing pharmaceuticals from not only surface water but also wastewater of pharmaceutical industrial manufactures.

  6. Mapping the location of grafted PNIPAAM in mesoporous SBA-15 silica using gas adsorption analysis

    DEFF Research Database (Denmark)

    Reichhardt, Nina Viola; Guillet-Nicolas, Rémy; Thommes, Matthias

    2012-01-01

    The thermoresponsive polymer poly-N-isopropylacrylamide (PNIPAAM) was grafted in mesoporous SBA-15 silica. The grafting process consists of three steps: (i) increasing the amount of surface silanol groups of SBA-15 by hydroxylation, (ii) attachment of an anchor (1-(trichlorosilyl)-2-(m/p- (chloro......The thermoresponsive polymer poly-N-isopropylacrylamide (PNIPAAM) was grafted in mesoporous SBA-15 silica. The grafting process consists of three steps: (i) increasing the amount of surface silanol groups of SBA-15 by hydroxylation, (ii) attachment of an anchor (1-(trichlorosilyl)-2-(m...

  7. TiO2 supported on rod-like mesoporous silica SBA-15: Preparation, characterization and photocatalytic behaviour

    International Nuclear Information System (INIS)

    Li, Yanjuan; Li, Nan; Tu, Jinchun; Li, Xiaotian; Wang, Beibei; Chi, Yue; Liu, Darui; Yang, Dianfan

    2011-01-01

    Highlights: ► Rod-like SBA-15 and normal SBA-15 were used to prepare TiO 2 /SBA-15 composites. ► TiO 2 /SBA-15 composites were studied as catalysts for methyl orange photodegradation. ► TiO 2 /Rod-SBA-15 exhibited higher photocatalytic activity than TiO 2 /Nor-SBA-15. ► The higher catalytic activity was a result of the controlled morphology of SBA-15. -- Abstract: TiO 2 nanoparticles have been successfully incorporated in the pores of mesoporous silica SBA-15 with different morphologies by a wet impregnation method. The composites were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), inductively coupled plasma (ICP) emission spectroscopy, transmission electron microscopy (TEM), N 2 -sorption and UV–Vis diffuse reflectance spectroscopy. The photodegradation of methyl orange (MO) was used to study their photocatalytic property. It is indicated that the morphology of SBA-15 had a great influence on the photocatalytic activity of the composites. When TiO 2 /SBA-15 composite was prepared by loading TiO 2 nanoparticles on uniform rod-like SBA-15 of 1 μm length, it showed higher photocatalytic degradation rate than that on less regular but much larger SBA-15 support. This difference was rationalized in terms of the homogeneously distributed and shorter channels of rod-like SBA-15, which favored mass transport and improved the efficient utilization of the pore surface.

  8. Children's perceptions of school-based violence.

    Science.gov (United States)

    Gumpel, T P; Meadan, H

    2000-09-01

    An important first step in understanding school-based violence is understanding children's subjective perceptions of the phenomena. Understanding these perceptions is likely to be a major factor in determining the integrity of both prevalence and intervention studies. We investigated how elementary and secondary aged children perceived school-based violence. A sample of 979 children from a nested random sample of elementary (grades 3-6) and middle school (grades 7-8) classrooms in Jerusalem participated in this study. To understand children's perception of school violence, we used an instrument composed of 19 dichotomous items, each presenting a one-line description of a behaviour, which the respondent would define as either 'intentionally harmful' or not. Eighth graders were significantly less likely to label the behaviours described as violent compared to all other grades; and seventh graders were less likely as compared to third, fourth and fifth graders; also, some between-gender differences were found. The respondents often view the behaviours described as intentional and aggressive; this finding should serve as an impetus to widen the scope of school-based violence interventions to include these behaviours, especially for younger children.

  9. School-based programmes for preventing smoking.

    Science.gov (United States)

    Thomas, Roger E; McLellan, Julie; Perera, Rafael

    2013-04-30

    Helping young people to avoid starting smoking is a widely endorsed public health goal, and schools provide a route to communicate with nearly all young people. School-based interventions have been delivered for close to 40 years. The primary aim of this review was to determine whether school smoking interventions prevent youth from starting smoking. Our secondary objective was to determine which interventions were most effective. This included evaluating the effects of theoretical approaches; additional booster sessions; programme deliverers; gender effects; and multifocal interventions versus those focused solely on smoking. We searched the Cochrane Central Register of Controlled Trials (CENTRAL), the Cochrane Tobacco Addiction Group's Specialised Register, MEDLINE, EMBASE, PsycINFO, ERIC, CINAHL, Health Star, and Dissertation Abstracts for terms relating to school-based smoking cessation programmes. In addition, we screened the bibliographies of articles and ran individual MEDLINE searches for 133 authors who had undertaken randomised controlled trials in this area. The most recent searches were conducted in October 2012. We selected randomised controlled trials (RCTs) where students, classes, schools, or school districts were randomised to intervention arm(s) versus a control group, and followed for at least six months. Participants had to be youth (aged 5 to 18). Interventions could be any curricula used in a school setting to deter tobacco use, and outcome measures could be never smoking, frequency of smoking, number of cigarettes smoked, or smoking indices. Two reviewers independently assessed studies for inclusion, extracted data and assessed risk of bias. Based on the type of outcome, we placed studies into three groups for analysis: Pure Prevention cohorts (Group 1), Change in Smoking Behaviour over time (Group 2) and Point Prevalence of Smoking (Group 3). One hundred and thirty-four studies involving 428,293 participants met the inclusion criteria. Some

  10. 78 FR 42788 - School-Based Health Center Program

    Science.gov (United States)

    2013-07-17

    ... DEPARTMENT OF HEALTH AND HUMAN SERVICES Health Resources and Services Administration School-Based... Gadsden County. SUMMARY: HRSA will be transferring a School-Based Health Center Capital (SBHCC) Program... support the expansion of services at school-based health centers will continue. SUPPLEMENTARY INFORMATION...

  11. Extracurricular school-based sports as a motivating vehicle for sports participation in youth: a cross-sectional study

    Science.gov (United States)

    2014-01-01

    Background Extracurricular school-based sports are considered to be an ideal means of reaching children who are not active in community sports. The purposes of this study were to examine the extent to which pupils not engaging in community sports do participate in extracurricular school-based sports, and to assess whether extracurricular school-based sports participants are more physically active and/or more autonomously motivated towards sports in daily life than children who do not participate in extracurricular school-based sports. Methods One thousand forty-nine children (53.7% boys; M age = 11.02 years, SD = 0.02) out of 60 classes from 30 Flemish elementary schools, with an extracurricular school-based sports offer, completed validated questionnaires to assess physical activity (Flemish Physical Activity Questionnaire) and motivation (Behavioral Regulations in Physical Education Questionnaire). Multilevel regression analyses were conducted to examine the data generated from these questionnaires. Results More than three quarters of the children (76%) reported participating in extracurricular school-based sports during the current school year and 73% reported engaging in organized community sports. Almost two third of the children (65%) not participating in community sports stated that they did participate in extracurricular school-based sports. Extracurricular school-based sports participants were significantly more physically active than children not participating in extracurricular school-based sports (β = 157.62, p sports participation × community sports participation) were found for autonomous motivation, with boys engaging in extracurricular school-based sports but not in community sports being significantly more autonomously motivated towards sports than boys not engaging in community or extracurricular school-based sports (β = 0.58, p = 0.003). Such differences were not noted among girls. Conclusions If extracurricular school-based sports are offered

  12. 13 CFR 107.470 - SBA approval of merger, consolidation, or reorganization of Licensee.

    Science.gov (United States)

    2010-01-01

    ... BUSINESS ADMINISTRATION SMALL BUSINESS INVESTMENT COMPANIES Changes in Ownership, Control, or Structure of Licensee; Transfer of License Change in Structure of Licensee § 107.470 SBA approval of merger..., change form of organization (corporation or partnership) or reorganize without SBA's prior written...

  13. Silylated Co/SBA-15 catalysts for Fischer-Tropsch synthesis

    International Nuclear Information System (INIS)

    Jia Lihong; Jia Litao; Li Debao; Hou Bo; Wang Jungang; Sun Yuhan

    2011-01-01

    A series of silylated Co/SBA-15 catalysts were prepared via the reaction of surface Si-OH of SBA-15 with hexamethyldisilazane (HMDS) under anhydrous, vapor-phase conditions, and then characterized by FT-IR, N 2 physisorption, TG, XRD, and TPR-MS. The results showed that organic modification led to a silylated SBA-15 surface composed of stable hydrophobic Si-(CH 3 ) 3 species even after calcinations and H 2 reduction at 673 K. Furthermore, the hydrophobic surface strongly influenced both metal dispersion and reducibility. Compared with non-silylated Co/SBA, Co/S-SBA (impregnation after silylation) showed a high activity, due to the better cobalt reducibility on the hydrophobic support. However, S-Co/SBA (silylation after impregnation) had the lowest FT activity among all the catalysts, due to the lower cobalt reducibility along with the steric hindrance of grafted -Si(CH 3 ) 3 for the re-adsorption of α-olefins. -- Graphical abstract: The silylation of an SBA-15 before cobalt impregnation enhanced the reducibility of cobalt oxides on an SBA-15-supported cobalt catalyst and consequently increased the catalytic activity for Fischer-Tropsch synthesis. Display Omitted

  14. 13 CFR 142.41 - How does SBA protect the rights of defendants?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How does SBA protect the rights of... CIVIL REMEDIES ACT REGULATIONS Decisions and Appeals § 142.41 How does SBA protect the rights of defendants? These procedures separate the functions of the investigating official, reviewing official, and...

  15. 13 CFR 108.140 - SBA approval of initial Management Expenses.

    Science.gov (United States)

    2010-01-01

    ... VENTURE CAPITAL (âNMVCâ) PROGRAM Qualifications for the NMVC Program Organizing A Nmvc Company § 108.140 SBA approval of initial Management Expenses. A NMVC Company must have its Management Expenses approved by SBA at the time of designation as a NMVC Company. (See § 108.520 for the definition of Management...

  16. Photocatalytic activity of Ce-modified SBA-15 for the degradation of ...

    Indian Academy of Sciences (India)

    transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and N2 adsorption/desorption analysis. ... water.7,8,18 Existence of different sites of cerium ions and ... hydrocarbons.21 In this study, Ce-SBA-15 and Ce-Al-SBA-.

  17. Modifying the Hierarchical Porosity of SBA-15 via Mild-Detemplation Followed by Secondary Treatments

    NARCIS (Netherlands)

    Zhang, Zheng; Melian-Cabrera, Ignacio

    2014-01-01

    Fenton-chemistry-based detemplation combined with secondary treatments offers options to tune the hierarchical porosity of SBA-15. This approach has been studied on a series of SBA-15 mesophases and has been compared to the conventional calcination. The as-synthesized and detemplated materials were

  18. Metal-loaded SBA-16-like silica – Correlation between basicity and affinity towards hydrogen

    International Nuclear Information System (INIS)

    Ouargli-Saker, R.; Bouazizi, N.; Boukoussa, B.; Barrimo, Diana; Paola-Nunes-Beltrao, Ana; Azzouz, A.

    2017-01-01

    Highlights: • Metal dispersion in longitudinal channels confers adsorption properties to SBA-16. • Both Fe"0-NPs and Cu"0-NPs seem to be responsible of this effect. • Effect of the repetitive adsorption-desorption cycles on CO_2 and water sorption. • Hydrogen storage on the functionalized materials. - Abstract: Nanoparticles of Cu"o (CuNPs) and Fe"o (FeNPs) were dispersed in SBA-16-like silica, resulting metal-loaded materials (Cu-SBA-16 and Fe-SBA-16) with improved affinity towards hydrogen. Electron microscopy and X-ray diffraction showed that MNP dispersion occurs mainly inside SBA-16 channels. MNP incorporation was found to confer affinity to the silica surface, since higher CO_2 retention capacity (CRC) was registered Cu/SBA-16 and Fe/SBA-16. This was accompanied by a significant improvement of the affinity towards hydrogen, as supported by hydrogen adsorption tests. This was explained in terms of strong hydrogen interaction with MNP and lattice oxygen atoms. The results reported herein open new prospects for SBA-16 as potential adsorbents for hydrogen storage.

  19. Metal-loaded SBA-16-like silica – Correlation between basicity and affinity towards hydrogen

    Energy Technology Data Exchange (ETDEWEB)

    Ouargli-Saker, R. [Department of Materials Engineering, University of Science and Technology, El M’naouer, BP 1505, Oran (Algeria); Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8 (Canada); Bouazizi, N. [Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8 (Canada); Unité de recherche, Electrochimie, Matériaux et Environnement, Faculté des Sciences de Gabès, Université de Gabès, Cité Erriadh, 6072 Gabès (Tunisia); Boukoussa, B. [Department of Materials Engineering, University of Science and Technology, El M’naouer, BP 1505, Oran (Algeria); Lqamb, Laboratório de Química Analítica Ambiental, Faculdade de Química, Pontifícia Universidade Católica do Rio Grande do Sul (Brazil); Barrimo, Diana [Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8 (Canada); Paola-Nunes-Beltrao, Ana [Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8 (Canada); Laboratory of Materials Chemistry L.C.M, University of Oran1 Ahmed Ben Bella, BP 1524, El-Mnaouer, 31000 Oran (Algeria); Azzouz, A., E-mail: azzouz.a@uqam.ca [Nanoqam, Department of Chemistry, University of Quebec at Montreal, H3C3P8 (Canada)

    2017-07-31

    Highlights: • Metal dispersion in longitudinal channels confers adsorption properties to SBA-16. • Both Fe{sup 0}-NPs and Cu{sup 0}-NPs seem to be responsible of this effect. • Effect of the repetitive adsorption-desorption cycles on CO{sub 2} and water sorption. • Hydrogen storage on the functionalized materials. - Abstract: Nanoparticles of Cu{sup o} (CuNPs) and Fe{sup o} (FeNPs) were dispersed in SBA-16-like silica, resulting metal-loaded materials (Cu-SBA-16 and Fe-SBA-16) with improved affinity towards hydrogen. Electron microscopy and X-ray diffraction showed that MNP dispersion occurs mainly inside SBA-16 channels. MNP incorporation was found to confer affinity to the silica surface, since higher CO{sub 2} retention capacity (CRC) was registered Cu/SBA-16 and Fe/SBA-16. This was accompanied by a significant improvement of the affinity towards hydrogen, as supported by hydrogen adsorption tests. This was explained in terms of strong hydrogen interaction with MNP and lattice oxygen atoms. The results reported herein open new prospects for SBA-16 as potential adsorbents for hydrogen storage.

  20. 13 CFR 108.660 - Other items required to be filed by NMVC Company with SBA.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Other items required to be filed by NMVC Company with SBA. 108.660 Section 108.660 Business Credit and Assistance SMALL BUSINESS... other person who was required by SBA to complete a personal history statement, is charged with or...

  1. 13 CFR 123.11 - Does SBA require collateral for any of its disaster loans?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Does SBA require collateral for any of its disaster loans? 123.11 Section 123.11 Business Credit and Assistance SMALL BUSINESS...? Generally, SBA will not require that you pledge collateral to secure a disaster home loan or a physical...

  2. 13 CFR 107.640 - Requirement to file Portfolio Financing Reports (SBA Form 1031).

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Requirement to file Portfolio Financing Reports (SBA Form 1031). 107.640 Section 107.640 Business Credit and Assistance SMALL BUSINESS... (SBA Form 1031). For each Financing of a Small Business (excluding guarantees), you must submit a...

  3. 13 CFR 108.640 - Requirement to file portfolio financing reports (SBA Form 1031).

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Requirement to file portfolio financing reports (SBA Form 1031). 108.640 Section 108.640 Business Credit and Assistance SMALL BUSINESS... portfolio financing reports (SBA Form 1031). For each Financing you make (excluding guarantees), you must...

  4. 13 CFR 121.408 - What are the size procedures for SBA's Certificate of Competency Program?

    Science.gov (United States)

    2010-01-01

    ..., including its affiliates, is small for purposes of the COC program, SBA will process the application for COC... SBA's Certificate of Competency Program? 121.408 Section 121.408 Business Credit and Assistance SMALL... Certificate of Competency Program? (a) A firm which applies for a COC must file an “Application for Small...

  5. 13 CFR 120.1716 - Required SBA approval of servicing actions.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Required SBA approval of servicing actions. 120.1716 Section 120.1716 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Establishment of SBA Secondary Market Guarantee Program for First Lien Position 504 Loan Pools...

  6. 13 CFR 120.1718 - SBA's right to assume Seller's responsibilities.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA's right to assume Seller's responsibilities. 120.1718 Section 120.1718 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS LOANS Establishment of SBA Secondary Market Guarantee Program for First Lien Position 504 Loan Pools...

  7. 13 CFR 127.604 - How will SBA process an EDWOSB or WOSB status protest?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How will SBA process an EDWOSB or WOSB status protest? 127.604 Section 127.604 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION WOMEN-OWNED SMALL BUSINESS FEDERAL CONTRACT ASSISTANCE PROCEDURES Protests § 127.604 How will SBA...

  8. 13 CFR 127.402 - How will SBA conduct an examination?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How will SBA conduct an examination? 127.402 Section 127.402 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION WOMEN-OWNED SMALL BUSINESS FEDERAL CONTRACT ASSISTANCE PROCEDURES Eligibility Examinations § 127.402 How will SBA...

  9. 75 FR 13329 - Implications of Financial Accounting System (FAS) 166 on SBA Guaranteed Loan Programs

    Science.gov (United States)

    2010-03-19

    ... SMALL BUSINESS ADMINISTRATION [Docket No. SBA-2010-0005] Implications of Financial Accounting... from the public on: (1) The effect that the accounting changes mandated by the Financial Accounting Standards Board (FASB) in Financial Accounting Standard (FAS) 166 have on SBA Lender and investor...

  10. 13 CFR 107.1530 - How a Licensee computes SBA's Profit Participation.

    Science.gov (United States)

    2010-01-01

    ... ADMINISTRATION SMALL BUSINESS INVESTMENT COMPANIES SBA Financial Assistance for Licensees (Leverage) Participating Securities Leverage § 107.1530 How a Licensee computes SBA's Profit Participation. This section...) of this section is lower than your PLC ratio currently in effect, such result will become your new...

  11. 13 CFR 101.105 - Who may use SBA's official seal and for what purpose?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Who may use SBA's official seal and for what purpose? 101.105 Section 101.105 Business Credit and Assistance SMALL BUSINESS... be used in any manner which implies SBA endorsement of commercial products or services or of the user...

  12. 13 CFR 121.105 - How does SBA define “business concern or concern”?

    Science.gov (United States)

    2010-01-01

    ... concern or concernâ? 121.105 Section 121.105 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION... Applicability § 121.105 How does SBA define “business concern or concern”? (a)(1) Except for small agricultural cooperatives, a business concern eligible for assistance from SBA as a small business is a business entity...

  13. 13 CFR 126.201 - Who does SBA consider to own a HUBZone SBC?

    Science.gov (United States)

    2010-01-01

    ... persons who are U.S. citizens. (b) Partnerships. SBA considers all partners, whether general or limited, to be owners in a partnership. (c) Sole proprietorships. The proprietor is the owner. (d) Limited liability companies. SBA considers each member to be an owner of a limited liability company. [69 FR 29422...

  14. Selective Preparation of Furfural from Xylose over Sulfonic Acid Functionalized Mesoporous Sba-15 Materials

    Directory of Open Access Journals (Sweden)

    Panpan Li

    2011-04-01

    Full Text Available Sulfonic acid functionalized mesoporous SBA-15 materials were prepared using the co-condensation and grafting methods, respectively, and their catalytic performance in the dehydration of xylose to furfural was examined. SBA-15-SO3H(C prepared by the co-condensation method showed 92–95% xylose conversion and 74% furfural selectivity, and 68–70% furfural yield under the given reaction conditions. The deactivation and regeneration of the SBA-15-SO3H(C catalyst for the dehydration of xylose was also investigated. The results indicate that the used and regeneration catalysts retained the SBA-15 mesoporous structure, and the S content of SBA-15-SO3H(C almost did not change. The deactivation of the catalysts is proposed to be associated with the accumulation of byproducts, which is caused by the loss reaction of furfural. After regeneration by H2O2, the catalytic activity of the catalyst almost recovered.

  15. Dehydrogenation of Isobutane with Carbon Dioxide over SBA-15-Supported Vanadium Oxide Catalysts

    Directory of Open Access Journals (Sweden)

    Chunling Wei

    2016-10-01

    Full Text Available A series of vanadia catalysts supported on SBA-15 (V/SBA with a vanadia (V content ranging from 1% to 11% were prepared by an incipient wetness method. Their catalytic behavior in the dehydrogenation of isobutane to isobutene with CO2 was examined. The catalysts were characterized by N2 adsorption, X-ray diffraction (XRD, scanning electron microscopy (SEM, Raman spectroscopy, and temperature-programmed reduction (TPR. It was found that these catalysts were effective for the dehydrogenation reaction, and the catalytic activity is correlated with the amount of dispersed vanadium species on the SBA-15 support. The 7% V/SBA catalyst shows the highest activity, which gives 40.8% isobutane conversion and 84.8% isobutene selectivity. The SBA-15-supported vanadia exhibits higher isobutane conversion and isobutene selectivity than the MCM-41-supported one.

  16. Support for Offering Sexual Health Services through School-Based Health Clinics

    Science.gov (United States)

    Moore, Michele Johnson; Barr, Elissa; Wilson, Kristina; Griner, Stacey

    2016-01-01

    Background: Numerous studies document support for sexuality education in the schools. However, there is a dearth of research assessing support for sexual health services offered through school-based health clinics (SBHCs). The purpose of this study was to assess voter support for offering 3 sexual health services (STI/HIV testing, STI/HIV…

  17. Carboxylic acid-functionalized SBA-15 nanorods for gemcitabine delivery

    International Nuclear Information System (INIS)

    Bahrami, Zohreh; Badiei, Alireza; Ziarani, Ghodsi Mohammadi

    2015-01-01

    The present study deals with the functionalization of mesoporous silica nanoparticles as drug delivery systems. Mono, di, and tri amino-functionalized SBA-15 nanorods were synthesized by post-grafting method using (3-aminopropyl) triethoxysilane, N-(2-aminoethyl-)3- aminopropyltrimethoxysilane, and 3-[2-(2-aminoethylamino) ethylamino] propyl trimethoxysilane, respectively. The carboxylic acid derivatives of the amino-functionalized samples were obtained using succinic anhydride. Tminopropyltrimethoxysilanehe obtained modified materials were investigated as matrixes for the anticancer drug (gemcitabine) delivery. The prepared samples were characterized by SAXS, N 2 adsorption/desorption, SEM, transmission electron microscopy, thermogravimetric analysis, and FTIR and UV spectroscopies. The adsorption and release properties of all samples were studied. It was revealed that the adsorption capacity and release behavior of gemcitabine were highly dependent on the type of the introduced functional groups. The carboxylic acid-modified samples have higher loading content, due to the strong interaction with gemcitabine. The maximum content of deposited drug in the modified SBA-15 nanorods is close to 40 wt%. It was found that the surface functionalization leads toward significant decrease of the drug release rate. The carboxylic acid-functionalized samples have slower release rate in contrast with the amino-functionalized samples

  18. The effect of a school-based educational intervention on menstrual health: an intervention study among adolescent girls in Bangladesh

    NARCIS (Netherlands)

    Haque, S.E.; Rahman, M.; Itsuko, K.; Mutahara, M.; Sakisaka, K.

    2014-01-01

    Objectives: To assess the impact of a school-based menstrual education programme on: (1) menstrual knowledge, beliefs and practices, (2) menstrual disorders experienced, and (3) restrictions on menstruating adolescents. Design: Intervention study. Setting: Araihazar area, Bangladesh. Participants:

  19. Reinventing School-Based Management: A School Board Guide to School-Based Improvement.

    Science.gov (United States)

    Drury, Darrel W.

    This report critiques the movement to decentralize decision making in public education. It provides an indepth examination of school-based management (SBM) with the aim of revealing why this type of reform seems to have had so little payoff for students. It addresses several key questions: What are the objectives of SBM, and are these objectives…

  20. Heteroaryldihydropyrimidine (HAP) and Sulfamoylbenzamide (SBA) Inhibit Hepatitis B Virus Replication by Different Molecular Mechanisms

    Science.gov (United States)

    Zhou, Zheng; Hu, Taishan; Zhou, Xue; Wildum, Steffen; Garcia-Alcalde, Fernando; Xu, Zhiheng; Wu, Daitze; Mao, Yi; Tian, Xiaojun; Zhou, Yuan; Shen, Fang; Zhang, Zhisen; Tang, Guozhi; Najera, Isabel; Yang, Guang; Shen, Hong C.; Young, John A. T.; Qin, Ning

    2017-01-01

    Heteroaryldihydropyrimidine (HAP) and sulfamoylbenzamide (SBA) are promising non-nucleos(t)ide HBV replication inhibitors. HAPs are known to promote core protein mis-assembly, but the molecular mechanism of abnormal assembly is still elusive. Likewise, the assembly status of core protein induced by SBA remains unknown. Here we show that SBA, unlike HAP, does not promote core protein mis-assembly. Interestingly, two reference compounds HAP_R01 and SBA_R01 bind to the same pocket at the dimer-dimer interface in the crystal structures of core protein Y132A hexamer. The striking difference lies in a unique hydrophobic subpocket that is occupied by the thiazole group of HAP_R01, but is unperturbed by SBA_R01. Photoaffinity labeling confirms the HAP_R01 binding pose at the dimer-dimer interface on capsid and suggests a new mechanism of HAP-induced mis-assembly. Based on the common features in crystal structures we predict that T33 mutations generate similar susceptibility changes to both compounds. In contrast, mutations at positions in close contact with HAP-specific groups (P25A, P25S, or V124F) only reduce susceptibility to HAP_R01, but not to SBA_R01. Thus, HAP and SBA are likely to have distinctive resistance profiles. Notably, P25S and V124F substitutions exist in low-abundance quasispecies in treatment-naïve patients, suggesting potential clinical relevance. PMID:28205569

  1. School-based programmes for preventing smoking.

    Science.gov (United States)

    Thomas, R; Perera, R

    2006-07-19

    Smoking rates in adolescents are rising in some countries. Helping young people to avoid starting smoking is a widely endorsed goal of public health, but there is uncertainty about how to do this. Schools provide a route for communicating with a large proportion of young people, and school-based programmes for smoking prevention have been widely developed and evaluated. To review all randomized controlled trials of behavioural interventions in schools to prevent children (aged 5 to12) and adolescents (aged 13 to18) starting smoking. We searched the Cochrane Central Register of Controlled Trials (CENTRAL) and the Cochrane Tobacco Addiction Group's Specialized Register, MEDLINE, EMBASE, PsyclNFO, ERIC, CINAHL, Health Star, Dissertation Abstracts and studies identified in the bibliographies of articles. Individual MEDLINE searches were made for 133 authors who had undertaken randomized controlled trials in this area. Types of studies: those in which individual students, classes, schools, or school districts were randomized to the intervention or control groups and followed for at least six months. Children (aged 5 to12) or adolescents (aged 13 to18) in school settings. Types of interventions: Classroom programmes or curricula, including those with associated family and community interventions, intended to deter use of tobacco. We included programmes or curricula that provided information, those that used social influences approaches, those that taught generic social competence, and those that included interventions beyond the school into the community. We included programmes with a drug or alcohol focus if outcomes for tobacco use were reported. Types of outcome measures: Prevalence of non-smoking at follow up among those not smoking at baseline. We did not require biochemical validation of self-reported tobacco use for study inclusion. We assessed whether identified citations were randomized controlled trials. We assessed the quality of design and execution, and

  2. Preparation and evaluation of aminopropyl-functionalized manganese-loaded SBA-15 for copper removal from aqueous solution.

    Science.gov (United States)

    Lei, Di; Zheng, Qianwen; Wang, Yili; Wang, Hongjie

    2015-02-01

    A novel material, aminopropyl-functionalized manganese-loaded SBA-15 (NH2-Mn-SBA-15), was synthesized by bonding 3-aminopropyl trimethoxysilane (APTMS) onto manganese-loaded SBA-15 (Mn-SBA-15) and used as a Cu2+ adsorbent in aqueous solution. Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction spectra (XRD), N2 adsorption/desorption isotherms, high resolution field emission scanning electron microscopy (FESEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the NH2-Mn-SBA-15. The ordered mesoporous structure of SBA-15 was remained after modification. The manganese oxides were mainly loaded on the internal surface of the pore channels while the aminopropyl groups were mainly anchored on the external surface of SBA-15. The adsorption of Cu2+ on NH2-Mn-SBA-15 was fitted well by the Langmuir equation and the maximum adsorption capacity of NH2-Mn-SBA-15 for Cu2+ was over two times higher than that of Mn-SBA-15 under the same conditions. The Elovich equation gave a good fit for the adsorption process of Cu2+ by NH2-Mn-SBA-15 and Mn-SBA-15. Both the loaded manganese oxides and the anchored aminopropyl groups were found to contribute to the uptake of Cu2+. The NH2-Mn-SBA-15 showed high selectivity for copper ions. Consecutive adsorption-desorption experiments showed that the NH2-Mn-SBA-15 could be regenerated by acid treatment without altering its properties. Copyright © 2014. Published by Elsevier B.V.

  3. Highly stable and regenerable Mn-based/SBA-15 sorbents for desulfurization of hot coal gas

    International Nuclear Information System (INIS)

    Zhang, F.M.; Liu, B.S.; Zhang, Y.; Guo, Y.H.; Wan, Z.Y.; Subhan, Fazle

    2012-01-01

    Highlights: ► A series of mesoporous Cu x Mn y O z /SBA-15 sorbents were fabricated for hot coal gas desulfurization. ► 1Cu9Mn/SBA-15 sorbent with high breakthrough sulfur capacity is high stable and regenerable. ► Utilization of SBA-15 constrained the sintering and pulverization of sorbents. - Abstract: A series of mesoporous xCuyMn/SBA-15 sorbents with different Cu/Mn atomic ratios were prepared by wet impregnation method and their desulfurization performance in hot coal gas was investigated in a fixed-bed quartz reactor in the range of 700–850 °C. The successive nine desulfurization–regeneration cycles at 800 °C revealed that 1Cu9Mn/SBA-15 presented high performance with durable regeneration ability due to the high dispersion of Mn 2 O 3 particles incorporated with a certain amount of copper oxides. The breakthrough sulfur capacity of 1Cu9Mn/SBA-15 observed 800 °C is 13.8 g S/100 g sorbents, which is remarkably higher than these of 40 wt%LaFeO 3 /SBA-15 (4.8 g S/100 g sorbents) and 50 wt%LaFe 2 O x /MCM-41 (5.58 g S/100 g sorbents) used only at 500–550 °C. This suggested that the loading of Mn 2 O 3 active species with high thermal stability to SBA-15 support significantly increased sulfur capacity at relatively higher sulfidation temperature. The fresh and used xCuyMn/SBA-15 sorbents were characterized by means of BET, XRD, XPS, XAES, TG/DSC and HRTEM techniques, confirmed that the structure of the sorbents remained intact before and after hot coal gas desulfurization.

  4. Highly Sensitive Fluorescence Probe Based on Functional SBA-15 for Selective Detection of Hg2+

    Directory of Open Access Journals (Sweden)

    Wang Xiaoyu

    2010-01-01

    Full Text Available Abstract An inorganic–organic hybrid fluorescence chemosensor (DA/SBA-15 was prepared by covalent immobilization of a dansylamide derivative into the channels of mesoporous silica material SBA-15 via (3-aminopropyltriethoxysilane (APTES groups. The primary hexagonally ordered mesoporous structure of SBA-15 was preserved after the grafting procedure. Fluorescence characterization shows that the obtained inorganic–organic hybrid composite is highly selective and sensitive to Hg2+ detection, suggesting the possibility for real-time qualitative or quantitative detection of Hg2+ and the convenience for potential application in toxicology and environmental science.

  5. Politics and the success of school-based health centers.

    Science.gov (United States)

    Rienzo, B A; Button, J W; Wald, K D

    2000-10-01

    School-based health centers (SBHCs) provide access to health services by bringing providers to children (and sometimes parents) and furnishing low cost services in an atmosphere of trust. While the number of SBHCs has continued to grow and some clinics have continued to expand their services, others have barely survived and some have even closed. This study investigated factors, particularly political forces, that affected the success of SBHCs. Using a national survey of clinic directors, this study assessed clinic success in terms both of longevity and service delivery. Findings indicate the factors most consistently and significantly associated with success include not only measures of "need" (school size and percent African-American enrollment or population) but of "politics" (citizen political ideology and Southern conservatism). Thus, politics matters more than previous studies suggested.

  6. Preparation of mesoporous silica films SBA-15 over different substrates

    International Nuclear Information System (INIS)

    Campos, V.O.; Sousa, E.M.B. de; Macedo, W.A.A.

    2010-01-01

    Mesoporous materials have been target of frequent interest due to its wide application possibilities, for example development of gas sensors, catalysis, molecules transportation, pharmaceuticals release, synthesis of auto-organized nanostructures, among others. The possibilities of application are enhanced when such materials are disposed in the form of thin and ultrathin films. In this work the preparation of mesoporous SBA-15 silica films is explored by means of the dipcoating technique of a sol-gel on different substrates (glass slides, stainless steel, copper), using the surfactant poly(ethylene glycol)-block-poly(propylene glycol)- block-poly(ethylene glycol), known as P123, a block copolymer. Synthesis parameters surfactant concentration, aging time and temperature were investigated. In this work we present the morphological and structural characterization of the prepared films, which were obtained using atomic force microscopy and x-ray fluorescence and diffraction. (author)

  7. The Effect of School-Based Management on Schools' Culture of Consumption

    Science.gov (United States)

    Nir, Adam E.

    2007-01-01

    The purpose of this study was to assess the extent to which the introduction of school-based management (SBM) has affected schools' culture of consumption and the inequalities between schools with different socio-economic backgrounds. An analysis of financial reports from 31 SBM schools over four years reveals that schools have increased rather…

  8. Cost-Effectiveness of a School-Based Emotional Health Screening Program

    Science.gov (United States)

    Kuo, Elena; Stoep, Ann Vander; McCauley, Elizabeth; Kernic, Mary A.

    2009-01-01

    Background: School-based screening for health conditions can help extend the reach of health services to underserved populations. Screening for mental health conditions is growing in acceptability, but evidence of cost-effectiveness is lacking. This study assessed costs and effectiveness associated with the Developmental Pathways Screening…

  9. Effectiveness of primary school-based oral health education in West Java, Indonesia.

    NARCIS (Netherlands)

    Hartono, S.W.; Lambri, S.E.; Palenstein Helderman, W.H. van

    2002-01-01

    A study in West Java has indicated that involvement of primary health care personnel and schoolteachers in oral health education (OHE) at primary schools is a feasible approach that is sustainable. AIM: The present study aims to assess the effects of that school-based OHE programme on pupils who had

  10. The Development of Instruments to Measure Motivational Interviewing Skill Acquisition for School-Based Personnel

    Science.gov (United States)

    Small, Jason W.; Lee, Jon; Frey, Andy J.; Seeley, John R.; Walker, Hill M.

    2014-01-01

    As specialized instructional support personnel begin learning and using motivational interviewing (MI) techniques in school-based settings, there is growing need for context-specific measures to assess initial MI skill development. In this article, we describe the iterative development and preliminary evaluation of two measures of MI skill adapted…

  11. 342 Quality Assurance Using ICT Best Practices in School-Based ...

    African Journals Online (AJOL)

    User

    2012-01-24

    Jan 24, 2012 ... ... in School-Based. Assessment of Students' Learning in Nigerian University ... Guidance and Counselling, University of Port–Harcourt, Rivers State. E-mail: ... Key words: Quality Assurance, ICTs best practices, School – Based ... Quality could mean a grade of achievement or standard against which to.

  12. Community Attitudes toward School-Based Sexuality Education in a Conservative State

    Science.gov (United States)

    Dunn, Michael S.; Thompson, Sharon H.; M'Cormack, Fredanna A. D.; Yannessa, John F.; Duffy, Jennifer L.

    2014-01-01

    The purpose of this study was to assess community attitudes toward school-based abstinence-plus sexuality education. A dual sampling approach of landlines and cell phones resulted in 988 adults from two counties completing "The South Carolina Survey of Public Opinion on Pregnancy Prevention." Among respondents, 87.1% supported…

  13. The role of school-based dental programme on dental caries experience in Yogyakarta Province, Indonesia

    NARCIS (Netherlands)

    Amalia, Rosa; Schaub, Rob M. H.; Widyanti, Niken; Stewart, Roy; Groothoff, Johan W.

    Objectives. To assess the effectiveness of a school-based dental programme (SBDP) in controlling caries by measuring the relationship between the SBDP performance and caries experience in children aged 12 in Yogyakarta Province, Indonesia, by taking into account influencing factors. Methods. A

  14. The School-Based Lives of LGBT Youth in the Republic of Ireland

    Science.gov (United States)

    Reygan, Finn

    2009-01-01

    There is a dearth of research on the experience of lesbian, gay, bisexual and transgender (LGBT) youth in schools in the Republic of Ireland. The current study assessed the school-based experiences of twenty five (N = 25) participants in the BeLonG To LGBT youth group in Dublin city using a mixed design survey instrument. The majority (n = 19) of…

  15. A School-Based Movement Programme for Children with Motor Learning Difficulty

    Science.gov (United States)

    Mannisto, Juha-Pekka; Cantell, Marja; Huovinen, Tommi; Kooistra, Libbe; Larkin, Dawne

    2006-01-01

    The study investigated the effectiveness of a school-based movement programme for a population of 5 to 7 year old children. Performance profiles on the Movement ABC were used to classify the children and to assess skill changes over time. Children were assigned to four different groups: motor learning difficulty (n = 10), borderline motor learning…

  16. Study on the adsorption of heavy metal ions from aqueous solution on modified SBA-15

    Directory of Open Access Journals (Sweden)

    Liliana Giraldo

    2013-01-01

    Full Text Available Amino-functionalized SBA-15 mesoporous silica was prepared, characterized, and used as an adsorbent for heavy metal ions. The organic - inorganic hybrid material was obtained by a grafting procedure using SBA-15 silica with 3-aminopropyl-triethoxysilane and bis(2,4,4-trimethylpentyl phosphinic acid (Cyanex 272, respectively. The structure and physicochemical properties of the materials were characterized by means of elemental analysis, X-ray diffraction (XRD, nitrogen adsorption - desorption, thermogravimetric analysis, FTIR spectroscopy and immersion calorimetry. The organic functional groups were successfully grafted onto the SBA-15 surface and the ordering of the support was not affected by the chemical modification. The behavior of the grafted solids was investigated for the adsorption of heavy metal ions from aqueous solutions. The hybrid materials showed high adsorption capacity and high selectivity for zinc ions. Other ions, such as cooper and cobalt were absorbed by the modified SBA-15 material.

  17. Hydroxyapatite/MCM-41 and SBA-15 Nano-Composites: Preparation, Characterization and Applications

    Science.gov (United States)

    Anunziata, Oscar A.; Martínez, Maria L.; Beltramone, Andrea R.

    2009-01-01

    Composites of hydroxyapatite (HaP) and highly ordered large pore mesoporous silica molecular sieves such as, Al-SBA-15 and Al-MCM-41 (denoted as SBA-15 and MCM-41, respectively) were developed, characterized by XRD, BET, FTIR, HRTEM and NMR-MAS, and applied to fluoride retention from contaminated water. The proposed procedure by a new route to prepare the HaP/SBA-15 and HaP/MCM-41, composites generates materials with aluminum only in tetrahedral coordination, according to the 27Al NMR-MAS results. Free OH- groups of HaP nanocrystals, within the hosts, allowed high capacity fluoride retention. The activity of fluoride retention using HaP/MCM-41 or HaP/SBA-15 was 1-2 orders of magnitude greater, respectively, than with pure HaP.

  18. Fe3O4@mesoporous SBA-15: A magnetically recoverable catalyst for photodegradation of malachite green

    International Nuclear Information System (INIS)

    Aliyan, Hamid; Fazaeli, Razieh; Jalilian, Rahil

    2013-01-01

    Surface of mesostructured silica (SBA-15) was modified by immobilizing Fe 3 O 4 . This modified-nanosized mesoporous silica Fe 3 O 4 @SBA-15 was characterized by FTIR, XRD, BET and SEM. A comparison of the photoefficiency of Fe 3 O 4 @SBA-15 toward photodegradation of malachite green (MG) was investigated in a photocatalytic reactor using UV lamp as a light source. The effect of various experimental parameters on the degradation performance of the process was evaluated by examining catalyst dosage, initial dye concentration and pH of the dye solution in the presence of Fe 3 O 4 @SBA-15 as photocatalyst. It was found that the photocatalyst exhibited significantly high catalytic stability, and the activity loss is negligible after five MG degradation cycles.

  19. 13 CFR 120.1720 - SBA's right to review Pool Loan documents.

    Science.gov (United States)

    2010-01-01

    ... may constitute a material failure to comply with the Program Rules and Regulations and may lead to an... Program and may restrict further sales under the Program until SBA determines that the Seller has provided...

  20. The Analysis of Simulation Based Acquisition (SBA) Economic Breakpoints in the Life Cycle of Major Programs

    National Research Council Canada - National Science Library

    Hunt, George

    2002-01-01

    ...). Application of SBA initiatives relies upon the use of modeling and simulation, among other methods, to effectively use scarce resources funds, manpower, equipment in the life cycle of major programs...

  1. 13 CFR 107.1560 - Distributions by Licensee-required Distributions to private investors and SBA.

    Science.gov (United States)

    2010-01-01

    .... (3) You must satisfy the liquidity requirement in § 107.1505. (4) The amount you distribute under... Distribution If your ratio of Leverage to Leverageable Capital as of the fiscal period end is: Then SBA's...

  2. 13 CFR 103.2 - Who may conduct business with SBA?

    Science.gov (United States)

    2010-01-01

    ... Participant, a partner of an Applicant or Participant partnership, or serve as an officer of an Applicant, Participant corporation, or limited liability company, you may conduct business with SBA without a...

  3. 13 CFR 120.1400 - Grounds for enforcement actions-SBA Lenders.

    Science.gov (United States)

    2010-01-01

    ... on felony or fraud charges of an officer, key employee, or loan agent involved with SBA loans for the... SBLC rights, privileges, and the franchise under § 120.1500(d)(2). (f) Additional grounds specific to...

  4. 32 CFR 644.512 - DA-SBA joint set-aside determination.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 4 2010-07-01 2010-07-01 true DA-SBA joint set-aside determination. 644.512 Section 644.512 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY (CONTINUED) REAL... Stone § 644.512 DA-SBA joint set-aside determination. Section 15 of the Small Business Act (15 U.S.C...

  5. Grafted chromium 13-membered dioxo-macrocyclic complex into aminopropyl-based nanoporous SBA-15

    Energy Technology Data Exchange (ETDEWEB)

    Tarlani, Aliakbar, E-mail: Tarlani@ccerci.ac.ir [Inorganic Nanostructures and Catalysts Research Laboratory, Chemistry and Chemical Engineering Research Center of Iran, Pajoohesh Boulevard, km 17, Karaj Highway, Tehran 14968-13151 (Iran, Islamic Republic of); Joharian, Monika; Narimani, Khashayar [Inorganic Nanostructures and Catalysts Research Laboratory, Chemistry and Chemical Engineering Research Center of Iran, Pajoohesh Boulevard, km 17, Karaj Highway, Tehran 14968-13151 (Iran, Islamic Republic of); Muzart, Jacques [Institut de Chimie Moléculaire de Reims, CNRS-Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex 2 (France); Fallah, Mahtab [Inorganic Nanostructures and Catalysts Research Laboratory, Chemistry and Chemical Engineering Research Center of Iran, Pajoohesh Boulevard, km 17, Karaj Highway, Tehran 14968-13151 (Iran, Islamic Republic of)

    2013-07-15

    In a new approach, chromium (III) tetraaza dioxo ligand was grafted onto functionalized SBA-15 after four step reactions by using coordinating ability of anchored amino functionalized SBA-15. After the termination of each step, the obtained product was characterized by FT-IR, low-angle X-ray diffraction (LA-XRD), N{sub 2} adsorption–desorption isotherms (Brunauer–Emmett–Teller (BET)–Barret–Joyner–Halenda (BJH)) and thermogravimetric analysis (TGA), and used as catalyst for the efficient and regioselective alcoholysis of styrene oxide to 2-alkoxy-1-phenylethanol product at ambient temperature. - Graphical abstract: Chromium (III) tetraaza dioxo ligand was grafted onto functionalized SBA-15 using coordinating ability of anchored amino functionalized SBA-15. Preparation of the catalyst is depicted in Scheme 1. - Highlights: • Dioxo tetraazachromium macrocyclic complex grafted into the SBA-15-NH{sub 2} channels. • The bond is created by coordinating ability of anchored amino functionalized SBA-15. • The prepared nanocatalyst has superior activity in the alcoholysis of styrene oxide. • The catalyst is reusable at ambient temperature for the mentioned reaction.

  6. Fischer-Tropsch synthesis in slurry-phase reactors using Co/SBA-15 catalysts

    Energy Technology Data Exchange (ETDEWEB)

    Rodrigues, J.J.; Lima, L.A.; Lima, W.S.; Rodrigues, M.G.F. [Universidade Federal de Campina Grande (UFCG), PB (Brazil). Unidade Academica de Engenharia Quimica], e-mail: meiry@deq.ufcg.edu.br; Fernandes, F.A.N. [Universidade Federal do Ceara (UFCE), CE (Brazil). Dept. de Engenharia Quimica

    2011-07-15

    The objective of this work is to describe the production of bifunctional catalysts using the incipient humidity method, producing catalysts with 15 wt.% cobalt supported in SBA-15 molecular sieve, to be applied in the Fischer-Tropsch (FT) reaction. The originality of this work is its focus on the use of a 15 wt.% Co/SBA-15 catalyst in FT synthesis in slurry reactors. The deposition of cobalt over SBA-15 support was accomplished by impregnation with a 0.1-M aqueous solution of cobalt nitrate. The Fischer-Tropsch synthesis was carried out with the catalyst at 240 deg C and 20 atm, under a COH{sub 2} atmosphere (molar ratio= 1), in a slurry reactor for 8 hours. X-ray diffraction measurements showed that the calcined cobalt catalyst did not modify the structure of SBA-15, proving that Co was present under the form of Co{sub 3}O{sub 4} in the catalyst. The addition of cobalt in the SBA-15 decreased the specific superficial area of the molecular sieve. The 15 wt.% Co/SBA-15 catalyst had a 40% CO conversion rate and a high selectivity towards the production of C{sub 5}{sup +} (53.9% after 8 hours). (author)

  7. Development of TREN dendrimers over mesoporous SBA-15 for CO2 adsorption

    International Nuclear Information System (INIS)

    Bhagiyalakshmi, Margandan; Park, Sang Do; Cha, Wang Seog; Jang, Hyun Tae

    2010-01-01

    Mesoporous SBA-15 was synthesized using rice husk ash (RHA) as the silica source and their defective Si-OH groups were grafted with tris(2-aminoethyl) amine (TREN) dendrimers generation through step-wise growth technique. The X-ray diffraction (XRD) and nitrogen adsorption/desorption results of parent SBA-15 obtained from RHA, suggests its resemblance with SBA-15 synthesized using conventional silica sources. Furthermore, the nitrogen adsorption/desorption results of SBA-15/TREN dendrimer generations (G1-G3) illustrates the growth of dendrimer inside the mesopores of SBA-15 and their CO 2 adsorption capacity was determined at 25 deg. C. The maximum CO 2 adsorption capacity of 5-6 and 7-8 wt% over second and third dendrimer generation was observed which is discernibly higher than the reported melamine and PAMAM dendrimers. The experimental CO 2 adsorption capacity was found to be less than theoretically calculated CO 2 adsorption capacity due to inter and intra molecular amidation as result of steric hindrance during the dendrimer growth. These SBA-15/TREN dendrimer generations also exhibit thermal stability up to 350 deg. C and CO 2 adsorption capacity remains unaltered upon seven consecutive runs.

  8. School-Based Management: The Next Needed Education Reform.

    Science.gov (United States)

    Guthrie, James W.

    1986-01-01

    Recommends the implementation of school-based management systems as one way to meet government demands for educational reform. Describes the functions of principals, school advisory councils, school-site budgeting and accounting, and annual planning and performance reports in successful school-based management systems. Presents examples of…

  9. School-Based Management and Effectiveness of Public Secondary ...

    African Journals Online (AJOL)

    ... to achieve its statutory roles, objectives and aspirations. We suggest that the adoption of School-based management by way of increasing the principals' sphere of influence would facilitate effective service delivery in schools. Keywords: school-based management, principals' effectiveness, public secondary schools.

  10. Strategies for Fostering the Efficacy of School-Based Management ...

    African Journals Online (AJOL)

    The study examined community participation in the School-Based Management Committees (SBMC), the challenges hindering participation, and strategies for fostering efficacy of the School Based Management Committee. The number 340 schools were selected from the population of 2543 public primary schools in ...

  11. School Based Management: A Detailed Guide for Successful Implementation.

    Science.gov (United States)

    Neal, Richard G.

    This book examines school-based management and provides strategies to implement management changes. The 14 chapters examine the components of good schools, including clarity of purpose, leadership, professionalism, lack of bureaucratic control, competition, and choice. The text describes the components of school-based management and the need for…

  12. Building Rural Communities through School-Based Agriculture Programs

    Science.gov (United States)

    Martin, Michael J.; Henry, Anna

    2012-01-01

    The purpose of this study was to develop a substantive theory for community development by school-based agriculture programs through grounded theory methodology. Data for the study included in-depth interviews and field observations from three school-based agriculture programs in three non-metropolitan counties across a Midwestern state. The…

  13. School-based data and management of technological innovations in ...

    African Journals Online (AJOL)

    School-based data and management of technological innovations in public secondary schools in Cross River State. ... Global Journal of Educational Research ... Result indicated that: there is no significant positive relationship between school-based data and principals management of technological innovation.

  14. Strengthening School-Based Occupational Therapy through Peer Mentoring

    Science.gov (United States)

    Bucey, Janet C.; Provident, Ingrid M.

    2018-01-01

    This article evaluates a peer mentoring experience for school-based practitioners and its effect on collaborative consultation practices. Best practice and public school policy promote the use of collaborative consultation services but school-based practitioners report significant barriers in achieving effective collaborative consultation…

  15. Nurse-Led School-Based Child Obesity Prevention

    Science.gov (United States)

    Tucker, Sharon; Lanningham-Foster, Lorraine M.

    2015-01-01

    School-based childhood obesity prevention programs have grown in response to reductions in child physical activity (PA), increased sedentariness, poor diet, and soaring child obesity rates. Multiple systematic reviews indicate school-based obesity prevention/treatment interventions are effective, yet few studies have examined the school nurse role…

  16. High surface area TiO2/SBA-15 nanocomposites: Synthesis, microstructure and adsorption-enhanced photocatalysis

    Science.gov (United States)

    Wei, J. Q.; Chen, X. J.; Wang, P. F.; Han, Y. B.; Xu, J. C.; Hong, B.; Jin, H. X.; Jin, D. F.; Peng, X. L.; Li, J.; Yang, Y. T.; Ge, H. L.; Wang, X. Q.

    2018-06-01

    Mesoporous SBA-15 was used to anchor TiO2 nanoparticles into the mesopores to form high surface area TiO2/SBA-15 nanocomposites, and then the influence of mesoporous-structure on the photocatalytic performance was investigated. TiO2/SBA-15 nanocomposites possessed the high specific surface area and appropriate pore size, indicating the excellent adsorption performance. TiO2/SBA-15 nanocomposites exhibited the higher photocatalytic activity to degrade dyes (methylene blue: MB) than TiO2 (removing SBA-15), which should attributed to the excellent adsorption performance of the nanocomposites. MB was absorbed to form the higher concentration near TiO2/SBA-15 photocatalysts, and the photocatalytic degradation for MB was improved.

  17. School-Based Caries Prevention, Tooth Decay, and the Community Environment.

    Science.gov (United States)

    Ruff, R R; Niederman, R

    2018-04-01

    The school and community context can contribute to inequity in child oral health. Whether the school and community affect the effectiveness of school-based caries prevention is unknown. The association between the school and community environment and dental caries, as well as their moderating effects with school-based caries prevention, was assessed using multilevel mixed-effects regression. Data were derived from a 6-y prospective cohort study of children participating in a school-based caries prevention program. For the school and community, living in a dental-shortage area and the proportion of children receiving free or reduced lunch were significantly related to an increased risk of dental caries at baseline. Caries prevention was associated with a significant per-visit decrease in the risk of untreated caries, but the rate of total caries experience increased over time. Caries prevention was more effective in children who had prior dental care at baseline and in schools with a higher proportion of low socioeconomic status students. There was significant variation across schools in the baseline prevalence of dental caries and the effect of prevention over time, although effects were modest. The school and community environment have a direct impact on oral health and moderate the association between school-based caries prevention and dental caries. Knowledge Transfer Statement: School-based caries prevention can be an effective means to reduce oral health inequity by embedding dental care within schools. However, the socioeconomic makeup of schools and characteristics of the surrounding community can affect the impact of school-based care.

  18. Evidence for metalsupport interactions in Au modified TiO_{x}/SBA-15 materials prepared by photodeposition

    OpenAIRE

    Mei, Bastian; Wiktor, Christian; Turner, Stuart; Pougin, Anna; Tendeloo, Van, Gustaaf; Fischer, Roland A.; Muhler, Martin; Strunk, Jennifer

    2013-01-01

    Abstract: Gold nanoparticles have been efficiently photodeposited onto titanate-loaded SBA-15 (Ti(x)/SBA-15) with different titania coordination. Transmission electron microscopy shows that relatively large Au nanoparticles are photodeposited on the outer surface of the Ti(x)/SBA-15 materials and that TiOx tends to form agglomerates in close proximity to the Au nanoparticles, often forming coreshell Au/TiOx structures. This behavior resembles typical processes observed due to strong-metal sup...

  19. School-based influenza vaccination: parents' perspectives.

    Directory of Open Access Journals (Sweden)

    Candace Lind

    Full Text Available School-age children are important drivers of annual influenza epidemics yet influenza vaccination coverage of this population is low despite universal publicly funded influenza vaccination in Alberta, Canada. Immunizing children at school may potentially increase vaccine uptake. As parents are a key stakeholder group for such a program, it is important to consider their concerns.We explored parents' perspectives on the acceptability of adding an annual influenza immunization to the immunization program that is currently delivered in Alberta schools, and obtained suggestions for structuring such a program.Forty-eight parents of children aged 5-18 years participated in 9 focus groups. Participants lived in urban areas of the Alberta Health Services Calgary Zone.Three major themes emerged: Advantages of school-based influenza vaccination (SBIV, Disadvantages of SBIV, and Implications for program design & delivery. Advantages were perceived to occur for different populations: children (e.g. emotional support, families (e.g. convenience, the community (e.g. benefits for school and multicultural communities, the health sector (e.g. reductions in costs due to burden of illness and to society at large (e.g. indirect conduit of information about health services, building structure for pandemic preparedness, building healthy lifestyles. Disadvantages, however, might also occur for children (e.g. older children less likely to be immunized, families (e.g. communication challenges, perceived loss of parental control over information, choices and decisions and the education sector (loss of instructional time. Nine second-level themes emerged within the major theme of Implications for program design & delivery: program goals/objectives, consent process, stakeholder consultation, age-appropriate program, education, communication, logistics, immunizing agent, and clinic process.Parents perceived advantages and disadvantages to delivering annual seasonal

  20. 13 CFR 107.1630 - SBA regulation of Brokers and Dealers and disclosure to purchasers of Leverage or Trust...

    Science.gov (United States)

    2010-01-01

    ... Credit and Assistance SMALL BUSINESS ADMINISTRATION SMALL BUSINESS INVESTMENT COMPANIES SBA Financial... standing in respect to compliance with the financial, ethical, and reporting requirements of such body...

  1. Computer-Related Posture and Discomfort in Primary School Children: The Effects of a School-Based Ergonomic Intervention

    Science.gov (United States)

    Dockrell, Sara; Earle, Deirdre; Galvin, Rose

    2010-01-01

    This study investigated the effect of a school-based ergonomic intervention on childrens' posture and discomfort while using computers using a pre/post test study design. The sample comprised 23 children age 9 and 10 years. Posture was assessed with Rapid Upper Limb Assessment (RULA) and a workstation assessment was completed using a Visual…

  2. VOx species supported on Al2O3-SBA-15 prepared by the grafting of alumina onto SBA-15: structure and activity in the oxidative dehydrogenation of ethane

    Czech Academy of Sciences Publication Activity Database

    Botková, Š.; Čapek, L.; Setnička, M.; Bulánek, R.; Čičmanec, P.; Kalužová, A.; Pastva, Jakub; Zukal, Arnošt

    2016-01-01

    Roč. 119, č. 1 (2016), s. 319-333 ISSN 1878-5190 R&D Projects: GA ČR GAP106/10/0196 Institutional support: RVO:61388955 Keywords : Ethane * UV-Vis * VOx species * Al2O3-SBA-15 Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 1.264, year: 2016

  3. A School-Based Dental Program Evaluation: Comparison to the Massachusetts Statewide Survey.

    Science.gov (United States)

    Culler, Corinna S; Kotelchuck, Milton; Declercq, Eugene; Kuhlthau, Karen; Jones, Kari; Yoder, Karen M

    2017-10-01

    School-based dental programs target high-risk communities and reduce barriers to obtaining dental services by delivering care to students in their schools. We describe the evaluation of a school-based dental program operating in Chelsea, a city north of Boston, with a low-income and largely minority population, by comparing participants' oral health to a Massachusetts oral health assessment. Standardized dental screenings were conducted for students in kindergarten, third, and sixth grades. Outcomes were compared in bivariate analysis, stratified by grade and income levels. A greater percentage of Chelsea students had untreated decay and severe treatment need than students statewide. Yet, fewer Chelsea third graders had severe treatment need, and more had dental sealants. There was no significant difference in the percentage of Chelsea students having severe treatment need or dental sealants by income level. Students participating in our program do not have lower decay levels than students statewide. However, they do have lower levels of severe treatment need, likely due to treatment referrals. Our results confirm that school-based prevention programs can lead to increased prevalence of dental sealants among high-risk populations. Results provide support for the establishment of full-service school-based programs in similar communities. © 2017, American School Health Association.

  4. School-based obesity policy, social capital, and gender differences in weight control behaviors.

    Science.gov (United States)

    Zhu, Ling; Thomas, Breanca

    2013-06-01

    We examined the associations among school-based obesity policies, social capital, and adolescents' self-reported weight control behaviors, focusing on how the collective roles of community and adopted policies affect gender groups differently. We estimated state-level ecologic models using 1-way random effects seemingly unrelated regressions derived from panel data for 43 states from 1991 to 2009, which we obtained from the Centers for Disease Control and Prevention's Youth Risk Behavior Surveillance System. We used multiplicative interaction terms to assess how social capital moderates the effects of school-based obesity policies. School-based obesity policies in active communities were mixed in improving weight control behaviors. They increased both healthy and unhealthy weight control behaviors among boys but did not increase healthy weight control behaviors among girls. Social capital is an important contextual factor that conditions policy effectiveness in large contexts. Heterogeneous behavioral responses are associated with both school-based obesity policies and social capital. Building social capital and developing policy programs to balance outcomes for both gender groups may be challenging in managing childhood obesity.

  5. Mechanism for enhanced degradation of clofibric acid in aqueous by catalytic ozonation over MnOx/SBA-15

    International Nuclear Information System (INIS)

    Sun, Qiangqiang; Wang, Yu; Li, Laisheng; Bing, Jishuai; Wang, Yingxin; Yan, Huihua

    2015-01-01

    Highlights: • Clofibric acid (CA) is efficiently mineralized by O 3 /MnO x /SBA-15. • Adsorption of CA and its intermediates on MnO x /SBA-15 is proved unimportant. • Initiation of hydroxyl radicals (·OH) is enhanced in O 3 /MnO x /SBA-15. • Uniformly distributed MnO x accounts for the high activity of MnO x /SBA-15. • Degradation routes of CA in ozonation alone and catalytic ozonation are proposed. - Abstract: Comparative experiments were conducted to investigate the catalytic ability of MnO x /SBA-15 for the ozonation of clofibric acid (CA) and its reaction mechanism. Compared with ozonation alone, the degradation of CA was barely enhanced, while the removal of TOC was significantly improved by catalytic ozonation (O 3 /MnO x /SBA-15). Adsorption of CA and its intermediates by MnO x /SBA-15 was proved unimportant in O 3 /MnO x /SBA-15 due to the insignificant adsorption of CA and little TOC variation after ceasing ozone in stopped-flow experiment. The more remarkably inhibition effect of sodium bisulfite (NaHSO 3 ) on the removal of TOC in catalytic ozonation than in ozonation alone elucidated that MnO x /SBA-15 facilitated the generation of hydroxyl radicals (·OH), which was further verified by electron spin-resonance spectroscopy (ESR). Highly dispersed MnO x on SBA-15 were believed to be the main active component in MnO x /SBA-15. Some intermediates were indentified and different degradation routes of CA were proposed in both ozonation alone and catalytic ozonation. The amounts of small molecular carboxylic acids (i.e., formic acid (FA), acetic acid (AA) and oxalic acid (OA)) generated in catalytic ozonation were lower than in ozonation alone, resulting from the generation of more ·OH

  6. Growth and physico-chemical properties of interconnected carbon nanotubes in FeSBA-15 mesoporous molecular sieves

    Directory of Open Access Journals (Sweden)

    Ulka Suryavanshi

    2016-03-01

    Full Text Available Carbon nanotubes (CNTs with well-defined hollow interiors, and different morphologies have been grown inside the nanochannels of iron substituted SBA-15 (Santa Barbara Amorphous with different iron contents and well-ordered large mesopores by chemical vapour deposition method. This novel method requires only 3 min for the formation of high quality multiwalled CNTs inside the SBA-15. The physico-chemical characteristics of the prepared CNT/Fe-SBA-15 nanocomposite have been analysed with powder X-ray diffraction (XRD, scanning electron microscopy (SEM, Raman spectroscopy and thermogravimetric analysis (TGA. XRD, Raman spectroscopy and TGA results confirm that the formed CNTs in SBA-15 nanochannels are highly pure and graphitic in nature, which can be altered by tuning the Fe content in the support matrix. SEM images show the interconnected network of SBA-15/CNT where CNT bridges the neighbouring SBA-15 nanoparticles. Interestingly, spring like CNTs and multi-terminal junctions such as Y and H junctions were also observed. The morphology of the CNTs inside the nanochannels of the SBA-15 support can also be controlled by the simple adjustment of the iron content in the SBA-15 framework. It has also been found that the content of Fe in the silica framework of SBA-15 plays a significant role in the formation of the CNTs and the amount of deposited CNTs in the nanochannels of SBA-15 increased with increasing the concentration of iron in framework. Among the materials studied, the FeSBA-15 with the nSi/nFe ratio of 2 showed the highest catalytic activity towards the formation of high quality CNTs.

  7. Inclusion of cefalexin in SBA-15 mesoporus material and release property

    International Nuclear Information System (INIS)

    Zhai, Qing-Zhou

    2012-01-01

    SBA-15 (Santa Barbara Amorphous-15) is a high ordered mesoporous material. It has the advantages of a non-toxic property, good hydrothermal stability and thermal stability, etc. Inside inner surface a lot of silanols exist. Pore diameter size is uniform and pore size distribution is narrow. This structural feature makes SBA-15 have a higher loading drug amount and be able to effectively extend the drug release cycle. In this paper, polyethylene glycol-block-polypropylene glycol-block-polyethylene glycol was used as template and tetraethyl orthosilicate was used as silica source to prepare SBA-15 by hydrothermal synthesis method. Cefalexin was included in SBA-15 and the included cefalexin drug content was 158.72 mg/g. The composite materials were characterized by using chemical analysis, powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared (IR) spectroscopy, and low temperature nitrogen adsorption–desorption. The results showed that cefalexin had been successfully included in host SBA-15 pore channels. Rational analyses of the release processes of cefalexin drug from the pores of SBA-15 to the simulated body fluid, simulated gastric juice and simulated intestinal fluid were made and sustained-release effects of the drug in complex system were studied. The results showed that in simulated body fluid within 1–5 h cefalexin was fast released and the cumulative release reached 50.00% at 5 h. In 15–20 h, the sustained release speed of cefalexin drug in the composite material decreased and the sustained-release cumulative amount reached 99.87% at 20 h. The release of cefalexin was basically complete. In simulated gastric fluid, composite material sustained-release ended at 4 h, the cumulative sustained release ratio reaching 26.10%. In simulated gastric fluid, the sustained-release was complete at 7 h, the cumulative sustained release ratio reaching 32.46%. The composite material of SBA-15 and cefalexin

  8. Reliable Prediction of Insulin Resistance by a School-Based Fitness Test in Middle-School Children

    Directory of Open Access Journals (Sweden)

    Allen DavidB

    2009-09-01

    Full Text Available Objectives. (1 Determine the predictive value of a school-based test of cardiovascular fitness (CVF for insulin resistance (IR; (2 compare a "school-based" prediction of IR to a "laboratory-based" prediction, using various measures of fitness and body composition. Methods. Middle school children ( performed the Progressive Aerobic Cardiovascular Endurance Run (PACER, a school-based CVF test, and underwent evaluation of maximal oxygen consumption treadmill testing ( max, body composition (percent body fat and BMI z score, and IR (derived homeostasis model assessment index []. Results. PACER showed a strong correlation with max/kg ( = 0.83, and with ( = , . Multivariate regression analysis revealed that a school-based model (using PACER and BMI z score predicted IR similar to a laboratory-based model (using max/kg of lean body mass and percent body fat. Conclusions. The PACER is a valid school-based test of CVF, is predictive of IR, and has a similar relationship to IR when compared to complex laboratory-based testing. Simple school-based measures of childhood fitness (PACER and fatness (BMI z score could be used to identify childhood risk for IR and evaluate interventions.

  9. Nanosize Fe x O y @SBA-3: A Comparative Study Between Conventional and Microwave Assisted Synthesis.

    Science.gov (United States)

    Barik, Sunita; Badamali, Sushanta K; Sahoo, Sagarika; Behera, Nandakishor; Dapurkar, Sudhir E

    2018-01-01

    The present study is focussed on development of highly dispersed nanosize iron oxide (FexOy) particles within the uniform mesopore channels of SBA-3. Herein we report a comparative study between conventional incipient wetness and microwave assisted synthesis routes adopted to devise nanoparticles. The developed materials are characterised by following X-ray diffraction, high resolution transmission electron microscopy, proton induced X-ray emission, diffuse reflectance UV-visible spectroscopy, thermogravimetry and Fourier transform infrared spectroscopy. Mesoporous siliceous SBA-3 was prepared at room temperature to obtain samples with good crystallinity and ordered pore structure. Pore channels of SBA-3 were used as nanoreactor for developing iron oxide nanoparticles. Iron oxide nanoparticles developed under microwave activation showed uniform distribution within the SBA-3 structure along with retaining the orderness of the pore architecture. On the contrary, iron oxides developed under incipient wetness method followed by conventional heating resulted in agglomeration of nanoparticles along with significant loss in SBA-3 pore structure. Proton induced X-ray emission studies revealed the extremely high purity of the samples and almost thrice higher amount of iron oxide particles are encapsulated within the host by microwave assisted preparation as compared to incipient/conventional heating method.

  10. The synthesis of novel hybrid thiol-functionalized nano-structured SBA-15

    International Nuclear Information System (INIS)

    Hoang, Van Duc; Dang, Tuyet Phuong; Dinh, Quang Khieu; Vu, Anh Tuan; Nguyen, Huu Phu

    2010-01-01

    Mesoporous thiol-functionalized SBA-15 has been directly synthesized by co-condensation of tetraethyl orthosilicate (TEOS) and 3-mercaptopropyltrimethoxysilane (MPTMS) with triblock copolymer P123 as-structure-directing agent under hydrothermal conditions. Surfactant removal was performed by Soxhlet ethanol extraction. These materials have been characterized by powder x-ray diffraction (XRD), nitrogen adsorption/desorption (BET model), transmission electron microscopy (TEM), thermal analysis, infrared spectroscopy (IR) and energy-dispersive x-ray spectroscopy (EDX). The main parameters, such as the initial molar ratio of MPTMS to TEOS, the time of adding MPTMS to synthesized gel and the Soxhlet ethanol extraction on the thiol functionalized SBA-15 with high thiol content and highly ordered hexagonal mesostructure, were investigated and evaluated. The adsorption capacity of the thiol-functionalized and non-functionalized SBA-15 materials for Pb 2+ ion from aqueous solution was tested. It was found that the Pb 2+ adsorption capacity of the thiol functionalized SBA-15 is three times higher than that of non-functionalized SBA-15

  11. Immobilization of lipase and keratinase on functionalized SBA-15 nanostructured materials

    Science.gov (United States)

    Le, Hy G.; Vu, Tuan A.; Tran, Hoa T. K.; Dang, Phuong T.

    2013-12-01

    SBA-15 nanostructured materials were synthesized via hydrothermal treatment and were functionalized with 3- aminopropyltriethoxysilane (APTES). The obtained samples were characterized by different techniques such as XRD, BET, TEM, IR and DTA. After functionalization, it showed that these nanostrucrured materials still maintained the hexagonal pore structure of the parent SBA-15. The model enzyms chosen in this study were lipase and keratinase. Lipase was a biocatalyst for hydrolyzation of long chain triglycerides or methyl esters of long chain alcohols and fatty acids; keratinase is a proteolytic enzyme that catalyzes the cleavage of keratin. The functionalized SBA-15 materials were used to immobilize lipase and keratinase, exhibiting higher activity than that of the unfunctionalized pure silica SBA-15 ones. This might be due to the enhancing of surface hydrophobicity upon functionalization. The surface functionalization of the nanostructured silicas with organic groups can favor the interaction between enzyme and the supports and consequently increasing the operational stability of the immobilized enzymes. The loading of lipase on functionalized SBA-15 materials was higher than that of keratinase. This might be rationalized by the difference in size of enzyms.

  12. School-based human papillomavirus vaccination: An opportunity to ...

    African Journals Online (AJOL)

    School-based human papillomavirus vaccination: An opportunity to increase knowledge about cervical cancer and improve uptake of ... Poor knowledge about cervical cancer plays a role in limiting screening uptake. HPV ... Article Metrics.

  13. Resources available for school based mental health services in ...

    African Journals Online (AJOL)

    Resources available for school based mental health services in Enugu urban and head teachers' knowledge of childhood mental health problems. ... PROMOTING ACCESS TO AFRICAN RESEARCH. AFRICAN JOURNALS ONLINE (AJOL) ...

  14. Morphing Literacy: Boys Reshaping Their School-Based Literacy Practices

    Science.gov (United States)

    Blair, Heather A.; Stanford, Kathy

    2004-01-01

    Details about a two-year ethnographic case study research in middle school boys to understand school literacy are presented. The study revealed that boys resist many school-based practices by transforming the assigned literacy work.

  15. Psychosis screening practices in schools: A survey of school-based mental health providers.

    Science.gov (United States)

    Kline, Emily R; Chokran, Cole; Rodenhiser-Hill, Janine; Seidman, Larry J; Woodberry, Kristen A

    2018-05-04

    Many school districts in the United States employ mental health professionals to provide assessment, counselling and crisis interventions within the school setting; however, little is known about actual clinical practices of psychosis screening in schools. The aim of the present study is to examine attitudes and practices regarding psychosis screening among school mental health providers in metropolitan Boston, Massachusetts. School-based mental health clinicians (N = 100) completed an anonymous survey assessing familiarity, screening, and involvement with psychosis and psychosis risk prior to attending trainings on psychosis. Providers reported screening for psychosis less often than other mental health problems and rated themselves as less confident treating psychosis relative to other mental health concerns. Frequency of screening for psychosis was significantly associated with familiarity with psychosis assessment and case management, confidence providing treatment for individuals experiencing psychosis, and the number of students with or at risk for psychosis with whom providers had been involved. Frequency of screening for psychosis was not associated with years of practice, suggesting that both novice and experienced school-based providers may benefit from training on this issue. Community outreach via school-based provider training on assessment and management of psychosis may help to increase providers' understanding of psychosis and increase the practice of verbal or written screening for psychosis and psychosis risk within schools. © 2018 John Wiley & Sons Australia, Ltd.

  16. 13 CFR 119.12 - What criteria will SBA use to evaluate applications for funding under the PRIME program?

    Science.gov (United States)

    2010-01-01

    ... types of clients served, and the successes realized within the client's organizational goals. (3) SBA... based on expertise and ability to fulfill the purposes of the Act. (2) SBA will evaluate organizational structure, financial stability, financial management systems, personnel capacity, and electronic...

  17. 13 CFR 107.1550 - Distributions by Licensee-permitted “tax Distributions” to private investors and SBA.

    Science.gov (United States)

    2010-01-01

    ...-permitted âtax Distributionsâ to private investors and SBA. 107.1550 Section 107.1550 Business Credit and... Distributions” to private investors and SBA. If you have outstanding Participating Securities or Earmarked... purposes, you may make “tax Distributions” to your investors in accordance with this § 107.1550, whether or...

  18. 13 CFR 106.503 - Are there types of Gifts which SBA may not solicit and/or accept?

    Science.gov (United States)

    2010-01-01

    ... of or for (or use cash Gifts to purchase or engage in) the following: (a) Alcohol products; (b... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Are there types of Gifts which SBA... ADMINISTRATION COSPONSORSHIPS, FEE AND NON-FEE BASED SBA-SPONSORED ACTIVITIES AND GIFTS Gifts § 106.503 Are there...

  19. 13 CFR 123.412 - What happens if SBA declines your business' pre-disaster mitigation loan request?

    Science.gov (United States)

    2010-01-01

    ...' loan request, SBA will notify your business in writing giving specific reasons for decline. If your... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What happens if SBA declines your business' pre-disaster mitigation loan request? 123.412 Section 123.412 Business Credit and Assistance...

  20. 13 CFR 108.1640 - SBA access to records of the CRA, Brokers, Dealers and Pool or Trust assemblers.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA access to records of the CRA, Brokers, Dealers and Pool or Trust assemblers. 108.1640 Section 108.1640 Business Credit and Assistance....1640 SBA access to records of the CRA, Brokers, Dealers and Pool or Trust assemblers. The CRA and any...

  1. A Pd/SBA-15 composite: synthesis, characterization and protein biosensing

    Energy Technology Data Exchange (ETDEWEB)

    Liu Yuge; Zhang Jingjing; Hou Wenhua; Zhu Junjie [Key Laboratory of Mesoscopic Chemistry and Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093 (China)], E-mail: whou@nju.edu.cn, E-mail: jjzhu@nju.edu.cn

    2008-04-02

    In this paper, palladium (Pd) nanoparticles have been successfully encapsulated into the channels of modified SBA-15 in situ via a facile, ethylene glycol (EG)-assisted sonochemical method. The products were confirmed by x-ray diffraction, transmission electron microscopy (TEM) and nitrogen adsorption analysis. The Pd/SBA-15 composite was used for the realization of direct electron transfer of hemoglobin (Hb). Electrochemical results showed that the Pd nanoparticles in the channels of SBA-15 could enhance the direct electron transfer between Hb and the electrode surface. The composite modified electrode displayed excellent electrochemical behavior. The sensor fabricated by the composite showed an excellent response to the reduction of hydrogen peroxide (H{sub 2}O{sub 2}), and the linear range for the determination of H{sub 2}O{sub 2} was from 1.8 to 119.3 {mu}M with a detection limit of 0.8 {mu}M.

  2. Assessing the outcomes of school-based partnership resilience ...

    African Journals Online (AJOL)

    Melanie Moen

    2017-02-28

    Feb 28, 2017 ... the intervention served as an educational pathway to resilience. Through a ... predicted poor academic achievement and high dropout rates when comparing groups of ... In fact, schools/teachers can be seen as a vehicle for the provision of care and support .... Brazil (2002) agree that, quantitative methods.

  3. Assessing the outcomes of school-based partnership resilience ...

    African Journals Online (AJOL)

    Through a concurrent mixed-methods research design interpreted through a ... resilience in relation to educational psychology-rural school intervention. ... The data analysis techniques consist of descriptive statistics and t-tests on the sampled ...

  4. Assessment of the adjuvant activity of mesoporous silica nanoparticles in recombinant Mycoplasma hyopneumoniae antigen vaccines

    Directory of Open Access Journals (Sweden)

    Veridiana Gomes Virginio

    2017-01-01

    Full Text Available The adjuvant potential of two mesoporous silica nanoparticles (MSNs, SBa-15 and SBa-16, was assessed in combination with a recombinant HSP70 surface polypeptide domain from Mycoplasma hyopneumoniae, the etiological agent of porcine enzootic pneumonia (PEP. The recombinant antigen (HSP70212-600, previously shown as immunogenic in formulation with classic adjuvants, was used to immunize BALB/c mice in combination with SBa-15 or SBa-16 MSNs, and the effects obtained with these formulations were compared to those obtained with alum, the adjuvant traditionally used in anti-PEP bacterins. The HSP70212-600 + SBa-15 vaccine elicited a strong humoral immune response, with high serum total IgG levels, comparable to those obtained using HSP70212-600 + alum. The HSP70212-600 + SBa-16 vaccine elicited a moderate humoral immune response, with lower levels of total IgG. The cellular immune response was assessed by the detection of IFN-γ, IL-4 and IL-10 in splenocyte culture supernatants. The HSP70212-600 + SBa-15 vaccine increased IFN-γ, IL-4 and IL-10 levels, while no stimulation was detected with the HSP70212-600 + SBa-16 vaccine. The HSP70212-600 + SBa-15 vaccine induced a mixed Th1/Th2-type response, with an additional IL-10 mediated anti-inflammatory effect, both of relevance for an anti-PEP vaccine. Alum adjuvant controls stimulated an unspecific cellular immune response, with similar levels of cytokines detected in mice immunized either with HSP70212-600 + alum or with the adjuvant alone. The better humoral and cellular immune responses elicited in mice indicated that SBa-15 has adjuvant potential, and can be considered as an alternative to the use of alum in veterinary vaccines. The use of SBa-15 with HSP70212-600 is also promising as a potential anti-PEP subunit vaccine formulation.

  5. Removal of patulin from aqueous solutions by propylthiol functionalized SBA-15

    International Nuclear Information System (INIS)

    Appell, Michael; Jackson, Michael A.; Dombrink-Kurtzman, Mary Ann

    2011-01-01

    Propylthiol functionalized SBA-15 silica was investigated to detoxify aqueous solutions contaminated with the regulated mycotoxin patulin. Micelle templated silicas with a specific pore size were synthetically modified to possess propylthiol groups, a functional group known to form Michael reaction products with the conjugated double bond system of patulin. BET surface area analysis indicated the propylthiol functionalized SBA-15 possesses channels with the pore size of 5.4 nm and a surface area of 345 m 2 g -1 . Elemental analysis indicates the silicon/sulfur ratio to be 10:1, inferring one propylthiol substituent for every ten silica residues. The propylthiol modified SBA-15 was effective at significantly reducing high levels of patulin from aqueous solutions (pH 7.0) in batch sorption assays at room temperature. The material was less effective at lower pH; however heating low pH solutions and apple juice to 60 deg, C in the presence of propylthiol functionalized SBA-15 significantly reduced the levels of patulin in contaminated samples. Composite molecular models developed by semi-empirical PM3 and empirical force field methods support patulin permeation through the mesoporous channels of propylthiol functionalized SBA-15. Density functional study at the B3LYP/6-31G(d,p) level predicts the proposed patulin adducts formed by reaction with the thiol residues exhibit less electrophilic properties than patulin. It is demonstrated the use of propylthiol functionalized SBA-15 is a viable approach to reduce patulin levels in aqueous solutions, including contaminated apple juice.

  6. Removal of patulin from aqueous solutions by propylthiol functionalized SBA-15

    Energy Technology Data Exchange (ETDEWEB)

    Appell, Michael, E-mail: michael.appell@ars.usda.gov [Bacterial Foodborne Pathogens and Mycology Research Unit, United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, 1815 N. University St., Peoria, IL 61604 (United States); Jackson, Michael A.; Dombrink-Kurtzman, Mary Ann [Renewable Product Technology Research Unit, United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, 1815 N. University St., Peoria, IL 61604 (United States)

    2011-03-15

    Propylthiol functionalized SBA-15 silica was investigated to detoxify aqueous solutions contaminated with the regulated mycotoxin patulin. Micelle templated silicas with a specific pore size were synthetically modified to possess propylthiol groups, a functional group known to form Michael reaction products with the conjugated double bond system of patulin. BET surface area analysis indicated the propylthiol functionalized SBA-15 possesses channels with the pore size of 5.4 nm and a surface area of 345 m{sup 2} g{sup -1}. Elemental analysis indicates the silicon/sulfur ratio to be 10:1, inferring one propylthiol substituent for every ten silica residues. The propylthiol modified SBA-15 was effective at significantly reducing high levels of patulin from aqueous solutions (pH 7.0) in batch sorption assays at room temperature. The material was less effective at lower pH; however heating low pH solutions and apple juice to 60 deg, C in the presence of propylthiol functionalized SBA-15 significantly reduced the levels of patulin in contaminated samples. Composite molecular models developed by semi-empirical PM3 and empirical force field methods support patulin permeation through the mesoporous channels of propylthiol functionalized SBA-15. Density functional study at the B3LYP/6-31G(d,p) level predicts the proposed patulin adducts formed by reaction with the thiol residues exhibit less electrophilic properties than patulin. It is demonstrated the use of propylthiol functionalized SBA-15 is a viable approach to reduce patulin levels in aqueous solutions, including contaminated apple juice.

  7. Single-site SBA-15 supported zirconium catalysts. Synthesis, characterization and toward cyanosilylation reaction

    International Nuclear Information System (INIS)

    Xu, Wei; Yu, Bo; Zhang, Ying; Chen, Xi; Zhang, Guofang; Gao, Ziwei

    2015-01-01

    Graphical abstract: Ligand-modified signal-site SBA-15 supported zirconium catalysts were synthesized by SOMC method and characterized by a variety of techniques. The zirconium surface complexes show high catalytic efficiency for cyanosilylation of benzaldehyde. - Highlights: • Some Zr active species have been anchored on the surface of SBA-15 by SOMC technique. • The structures of the Zr species have been characterized by a variety of techniques. • The anchored Zr species are single-sited surface complexes. • The Zr surface complexes are catalytic active for cyanosilylation of benzaldehyde. - Abstract: A successive anchoring of Zr(NMe 2 ) 4 , cyclopentadiene and a O-donor ligand, 1-hydroxyethylbenzene (PEA), 1,1′-bi-2-naphthol (Binol) or 2,3-dihydroxybutanedioic acid diethyl ester (Tartrate), on dehydroxylated SBA-15 pretreated at 500 °C for 16 h (SBA-15 -500 ) was conducted by SOMC strategy in moderate conditions. The dehydoxylation of SBA-15 was monitored by in situ Fourier transform infrared spectroscopy (in situ FT-IR). The ligand-modified SBA-15 -500 supported zirconium complexes were characterized by in situ FT-IR, 13 C CP MAS-NMR, X-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectrometry (ICP-MAS) and elemental analysis in detail, verifying that the surface zirconium species are single-sited. The catalytic activity of these complexes was evaluated by cyanosilylation of benzaldehyde. The results showed that the catalytic activity is dependent strongly on the structure of surface species and the configuration of the ligands

  8. Single-site SBA-15 supported zirconium catalysts. Synthesis, characterization and toward cyanosilylation reaction

    Energy Technology Data Exchange (ETDEWEB)

    Xu, Wei; Yu, Bo; Zhang, Ying; Chen, Xi; Zhang, Guofang, E-mail: gfzhang@snnu.edu.cn; Gao, Ziwei, E-mail: zwgao@snnu.edu.cn

    2015-01-15

    Graphical abstract: Ligand-modified signal-site SBA-15 supported zirconium catalysts were synthesized by SOMC method and characterized by a variety of techniques. The zirconium surface complexes show high catalytic efficiency for cyanosilylation of benzaldehyde. - Highlights: • Some Zr active species have been anchored on the surface of SBA-15 by SOMC technique. • The structures of the Zr species have been characterized by a variety of techniques. • The anchored Zr species are single-sited surface complexes. • The Zr surface complexes are catalytic active for cyanosilylation of benzaldehyde. - Abstract: A successive anchoring of Zr(NMe{sub 2}){sub 4}, cyclopentadiene and a O-donor ligand, 1-hydroxyethylbenzene (PEA), 1,1′-bi-2-naphthol (Binol) or 2,3-dihydroxybutanedioic acid diethyl ester (Tartrate), on dehydroxylated SBA-15 pretreated at 500 °C for 16 h (SBA-15{sub -500}) was conducted by SOMC strategy in moderate conditions. The dehydoxylation of SBA-15 was monitored by in situ Fourier transform infrared spectroscopy (in situ FT-IR). The ligand-modified SBA-15{sub -500} supported zirconium complexes were characterized by in situ FT-IR, {sup 13}C CP MAS-NMR, X-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectrometry (ICP-MAS) and elemental analysis in detail, verifying that the surface zirconium species are single-sited. The catalytic activity of these complexes was evaluated by cyanosilylation of benzaldehyde. The results showed that the catalytic activity is dependent strongly on the structure of surface species and the configuration of the ligands.

  9. Surface functionalization of SBA-15 by the solvent-free method

    International Nuclear Information System (INIS)

    Wang Yimeng; Zheng Yingwu; Zhu Jianhua

    2004-01-01

    A solvent-free technique was employed for fast modification of mesoporous materials. Copper, chromium and iron oxide species could be highly dispersed in SBA-15 by manually grinding the corresponding precursor salts and the host, followed by calcinations for the first time. This method is more effective to spontaneously disperse oxide species onto SBA-15 than impregnation, probably forming monolayer or submonolayer dispersion of salts or oxides. Besides, Cr(VI) species dominate in the mixing sample while Cr(III) species dominate in the impregnation one. In the temperature programmed surface reaction of nitrosamines, the sample prepared by solvent-free method showed a higher catalytic activity than the impregnation one

  10. Feasibility and principal acceptability of school-based mobile communication applications to disseminate healthy lunchbox messages to parents.

    Science.gov (United States)

    Reynolds, Renee; Sutherland, Rachel; Nathan, Nicole; Janssen, Lisa; Lecathelinais, Christophe; Reilly, Kathryn; Walton, Alison; Wolfenden, Luke

    2018-03-12

    This study aimed to assess the feasibility and acceptability of using an existing school-based mobile communication application to deliver messages to parents on how to pack a healthy lunchbox. A telephone survey was conducted with 196 primary school principals within the Hunter New England region of New South Wales, Australia, in 2016. Almost two thirds of primary schools (59%) currently use a school-based mobile communication application to communicate with parents. Most principals (91%) agreed school lunchboxes need improving, of which 80% agree it is a school's role to provide information and guidelines to parents. However, only 50% of principals reported currently providing such information. The provision of lunchbox messages to parents by a third party appeared an acceptable model of delivery by principals. Larger schools and schools in urban and lower socio-economic localities were more likely to have used a school-based mobile communication application. The majority of principals recognise student lunchboxes need improving. The use of school-based mobile communication applications appears to be feasible and acceptable by principals as a method of communicating lunchbox messages to parents. SO WHAT?: Use of school-based mobile communication applications may be an effective method for delivering health information at a population level. Future research should assess the potential efficacy of disseminating health interventions via this modality. © 2018 Australian Health Promotion Association.

  11. Synthesis of novel magnetic iron metal-silica (Fe-SBA-15) and magnetite-silica (Fe{sub 3}O{sub 4}-SBA-15) nanocomposites with a high iron content using temperature-programed reduction

    Energy Technology Data Exchange (ETDEWEB)

    Yiu, H H P [Department of Chemistry, University of Liverpool, Liverpool, Merseyside L69 7ZD (United Kingdom); Keane, M A [Chemical Engineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Lethbridge, Z A D [Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL (United Kingdom); Lees, M R [Department of Physics, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL (United Kingdom); Haj, A J El; Dobson, J [Institute of Science and Technology in Medicine, Keele University, Thornburrow Drive, Hartshill, Stoke-on-Trent ST4 7QB (United Kingdom)], E-mail: j.p.dobson@keele.ac.uk

    2008-06-25

    Magnetic iron metal-silica and magnetite-silica nanocomposites have been prepared via temperature-programed reduction (TPR) of an iron oxide-SBA-15 (SBA: Santa Barbara Amorphous) composite. TPR of the starting SBA-15 supported Fe{sub 2}O{sub 3} generated Fe{sub 3}O{sub 4} and FeO as stepwise intermediates in the ultimate formation of Fe-SBA-15. The composite materials have been characterized by means of x-ray diffraction, high resolution transmission electron microscopy and SQUID (superconducting quantum interference device) magnetometry. The Fe oxide and metal components form a core, as nanoscale particles, that is entrapped in the SBA-15 pore network. Fe{sub 3}O{sub 4}-SBA-15 and Fe-SBA-15 exhibited superparamagnetic properties with a total magnetization value of 17 emu g{sup -1}. The magnetite-silica composite (at an Fe{sub 3}O{sub 4} loading of 30% w/w) delivered a magnetization that exceeded values reported in the literature or obtained with commercial samples. Due to the high pore volume of the mesoporous template, the magnetite content can be increased to 83% w/w with a further enhancement of magnetization.

  12. Microstructure and Magnetic Properties of Highly Ordered SBA-15 Nanocomposites Modified with Fe2O3 and Co3O4 Nanoparticles

    Directory of Open Access Journals (Sweden)

    P. F. Wang

    2012-01-01

    Full Text Available Owing to the unique order mesopores, mesoporous SBA-15 could be used as the carrier of the magnetic nanoparticles. The magnetic nanoparticles in the frame and the mesopores lead to the exchange-coupling interaction or other interactions, which could improve the magnetic properties of SBA-15 nanocomposites. Mesoporous Fe/SBA-15 had been prepared via in situ anchoring Fe2O3 into the frame and the micropores of SBA-15 using the sol-gel and hydrothermal processes. Co3O4 nanoparticles had been impregnated into the mesopores of Fe/SBA-15 to form mesoporous Fe/SBA-15-Co3O4 nanocomposites. XRD, HRTEM, VSM, and N2 physisorption isotherms were used to characterize the mesostructure and magnetic properties of the SBA-15 nanocomposites, and all results indicated that the Fe2O3 nanoparticles presented into the frame and micropores, while the Co3O4 nanoparticles existed inside the mesopores of Fe/SBA-15. Furthermore, the magnetic properties of SBA-15 could be conveniently adjusted by the Fe2O3 and Co3O4 magnetic nanoparticles. Fe/SBA-15 exhibited ferromagnetic properties, while the impregnation of Co3O4 nanoparticles greatly improved the coercivity with a value of 1424.6 Oe, which was much higher than that of Fe/SBA-15.

  13. A dansyl group modified SBA-15 INHIBIT logic gate with [Hg2+ and Cl-] or [Hg2+ and Br-] as inputs

    Science.gov (United States)

    Wang, Xiaoyu; Yang, Honglei

    2013-07-01

    We developed a SBA-15-based INHIBIT logic gate (DA-SBA-15) which was prepared by covalent immobilization of a dansylamide derivative into the channels of the mesoporous silica material (SBA-15) via (3-aminopropyl)triethoxysilane (APTES) groups. A series of characteristic results proved that the fluorescent ligand was successfully grafted into the mesopores of SBA-15. The fluorescent characterization revealed excellent selectivity of DA-SBA-15 to the Hg2+ ion. Moreover, DA-SBA-15 can be considered as a selective fluorescent probe for Cl- and Br-. The fluorescent changes of DA-SBA-15 upon the addition of ions (Hg2+, Cl- and Br-) were utilized as an INH logic gate at the molecular level, using [Hg2+ and Cl-] or [Hg2+ and Br-] as chemical inputs and the fluorescence intensity signal as output.

  14. 13 CFR 120.210 - What percentage of a loan may SBA guarantee?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What percentage of a loan may SBA guarantee? 120.210 Section 120.210 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION BUSINESS... percent, except as otherwise authorized by law. [61 FR 3235, Jan. 31, 1996, as amended at 68 FR 51680, Aug...

  15. Substantially Stabilized Superacid Incorporated SBA-15 with Calcium Bridging for Selective Esterification of Glycerol

    Science.gov (United States)

    Hoo, P. Y.; Abdullah, A. Z.; Shuit, S. H.; Teoh, Y. P.; Ng, Q. H.; Kunasundari, B.

    2018-03-01

    The exploitation of the super acidity of heteropolyacids incorporated heterogeneous catalysts was only feasible if the heterogeneity of these catalysts was assured. To maintain the catalyst heterogeneity in polar medium, a novel two-step modification method was proposed to synthesize the highly active, yet stable heterogeneous catalyst, catered for selective esterification of monoglyceride. The surficial, structural and acidity properties of the modified catalysts were investigated via crucial characterization methods (N2 BET, HRTEM, and FTIR). The collective evidences verified the predicted formation of calcium oxides (CaO) on the mesopores surfaces of the SBA-15 support after the first modification, and the successful subsequent 12-tungstophosphoric acid (HPW) functionalization. The superior stability of the synthesized catalysts (10wt%-HPW/CaSBA-15) was demonstrated (negligible change in both conversion – 75% and yield – 70%), without the need for catalyst regeneration. Such result was attributed to the strong interaction between HPW and SBA-15 via calcium bridging. Being alkaline in nature, calcium oxides in the inner pores readily reacted with highly acidic HPW introduced in the subsequent wetness incipient step, forming insoluble HPW acid sites on inner pore walls of SBA-15 via the calcium bridging. This modification deemed promising and other alkaline metals should be explored in the future.

  16. 13 CFR 108.470 - SBA approval of merger, consolidation, or reorganization of NMVC Company.

    Science.gov (United States)

    2010-01-01

    ... BUSINESS ADMINISTRATION NEW MARKETS VENTURE CAPITAL (âNMVCâ) PROGRAM Changes in Ownership, Structure, or Control Change in Structure of Nmvc Company § 108.470 SBA approval of merger, consolidation, or reorganization of NMVC Company. You may not merge, consolidate, change form of organization (corporation or...

  17. 13 CFR 107.510 - SBA approval of Licensee's Investment Adviser/Manager.

    Science.gov (United States)

    2010-01-01

    ... Investment Adviser/Manager. 107.510 Section 107.510 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION SMALL BUSINESS INVESTMENT COMPANIES Managing the Operations of a Licensee Management and... management contract. SBA's approval of an Investment Adviser/Manager for one Licensee does not indicate...

  18. 13 CFR 124.1012 - What will SBA do when it receives an SDB protest?

    Science.gov (United States)

    2010-01-01

    ... incorporation; corporate by-laws; partnership agreements; limited liability company articles of organization... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What will SBA do when it receives an SDB protest? 124.1012 Section 124.1012 Business Credit and Assistance SMALL BUSINESS...

  19. Thermogravimetric Analysis (TGA) Profile of Modified Sba-15 at Different Amount of Alkoxy silane Group

    International Nuclear Information System (INIS)

    Norhasyimi Rahmat; Nur Fathilah Mohd Yusof; Ezani Hafiza

    2014-01-01

    This study focused on meso porous silica SBA-15 modified with alkoxy silane functional group; phenyltriethoxysilane (PTES) and vinyltriethoxysilane (VTES) using direct synthesis and post-grafting methods. By direct synthesis method, SBA-15 template by triblock copolymer (P123) and functionalized with alkoxy silane groups at different amount of loadings were co-condensed with tetraethyl orthosilicate (TEOS) under acidic conditions. As for post-grafting method, different loadings of alkoxy silane groups were added after co-condensation of TEOS with P123 template. Both synthesis methods used calcination process to remove surfactant template at 550 degree Celsius for 5 hours. The derivatized SBA-15 was characterized by thermogravimetric analysis to evaluate the profile at different loadings of alkoxy silane groups with different synthesis method. At temperature range of 300-800 degree Celsius, post-grafting method displayed the highest weight loss of phenyl and vinyl groups. However, there was no significant difference of weight loss for different amount of organo silane groups. In this study, TGA has shown to be significant characterization means to determine the effects of different method used in synthesizing modified SBA-15. It was shown that different loading of phenyl and vinyl groups did not affect the efficiency of surfactant removal. (author)

  20. Controlling reaction pathways for alcohol dehydration and dehydrogenation over FeSBA-15 catalysts

    NARCIS (Netherlands)

    Guan, Y.; Li, Y.; Santen, van R.A.; Hensen, E.J.M.; Li, Can

    2007-01-01

    The iron location in FeSBA-15 strongly influences the selectivity to dehydrogenation and dehydration in ethanol conversion. At low iron loading, Fe is present as isolated species in the amorphous silica phase. At higher loading additional aggregated forms of iron oxide exist. Isolated species in the

  1. 13 CFR 107.1520 - How a Licensee computes and allocates Prioritized Payments to SBA.

    Science.gov (United States)

    2010-01-01

    ... Prioritized Payments, earned Adjustments and earned Charges. (3) Earned Payments Account. The Earned Payments... Distribution: (1) Bring the Accumulation Account up to date by adding to it all Prioritized Payments and... Payments to SBA. This section tells you how to compute Prioritized Payments, Adjustments and Charges on...

  2. 13 CFR 127.403 - What happens if SBA verifies the concern's eligibility?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What happens if SBA verifies the concern's eligibility? 127.403 Section 127.403 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION WOMEN-OWNED SMALL BUSINESS FEDERAL CONTRACT ASSISTANCE PROCEDURES Eligibility Examinations § 127...

  3. 13 CFR 127.303 - How will SBA select and identify approved certifiers?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How will SBA select and identify approved certifiers? 127.303 Section 127.303 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION WOMEN-OWNED SMALL BUSINESS FEDERAL CONTRACT ASSISTANCE PROCEDURES Certification of EDWOSB or WOSB Status...

  4. 13 CFR 127.404 - What happens if SBA is unable to verify a concern's eligibility?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What happens if SBA is unable to verify a concern's eligibility? 127.404 Section 127.404 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION WOMEN-OWNED SMALL BUSINESS FEDERAL CONTRACT ASSISTANCE PROCEDURES Eligibility Examinations § 127...

  5. 13 CFR 127.502 - How will SBA identify and provide notice of the designated industries?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How will SBA identify and provide notice of the designated industries? 127.502 Section 127.502 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION WOMEN-OWNED SMALL BUSINESS FEDERAL CONTRACT ASSISTANCE PROCEDURES Federal Contract...

  6. 13 CFR 108.1230 - Draw-downs by NMVC Company under SBA's Leverage commitment.

    Science.gov (United States)

    2010-01-01

    ... the NMVC Company. (4) A statement that the proceeds are needed to fund one or more particular Small Businesses or to provide liquidity for your operations. If required by SBA, the statement must include the... Financing. (e) Reporting requirements after drawing funds. (1) Within 30 calendar days after the actual...

  7. 13 CFR 107.1230 - Draw-downs by Licensee under SBA's Leverage commitment.

    Science.gov (United States)

    2010-01-01

    ... general partner of the Licensee. (4) A statement that the proceeds are needed to fund one or more particular Small Businesses or to provide liquidity for your operations. If required by SBA, the statement... of each proposed Financing. (e) Reporting requirements after drawing funds. (1) Within 30 calendar...

  8. Single-site SBA-15 supported zirconium catalysts. Synthesis, characterization and toward cyanosilylation reaction

    Science.gov (United States)

    Xu, Wei; Yu, Bo; Zhang, Ying; Chen, Xi; Zhang, Guofang; Gao, Ziwei

    2015-01-01

    A successive anchoring of Zr(NMe2)4, cyclopentadiene and a O-donor ligand, 1-hydroxyethylbenzene (PEA), 1,1‧-bi-2-naphthol (Binol) or 2,3-dihydroxybutanedioic acid diethyl ester (Tartrate), on dehydroxylated SBA-15 pretreated at 500 °C for 16 h (SBA-15-500) was conducted by SOMC strategy in moderate conditions. The dehydoxylation of SBA-15 was monitored by in situ Fourier transform infrared spectroscopy (in situ FT-IR). The ligand-modified SBA-15-500 supported zirconium complexes were characterized by in situ FT-IR, 13C CP MAS-NMR, X-ray photoelectron spectroscopy (XPS), inductively coupled plasma mass spectrometry (ICP-MAS) and elemental analysis in detail, verifying that the surface zirconium species are single-sited. The catalytic activity of these complexes was evaluated by cyanosilylation of benzaldehyde. The results showed that the catalytic activity is dependent strongly on the structure of surface species and the configuration of the ligands.

  9. 13 CFR 121.102 - How does SBA establish size standards?

    Science.gov (United States)

    2010-01-01

    ... entry barriers, and distribution of firms by size. It also considers technological changes, competition... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How does SBA establish size standards? 121.102 Section 121.102 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION SMALL...

  10. 13 CFR 108.510 - SBA approval of NMVC Company's Investment Adviser/Manager.

    Science.gov (United States)

    2010-01-01

    ... Investment Adviser/Manager. 108.510 Section 108.510 Business Credit and Assistance SMALL BUSINESS... and Compensation § 108.510 SBA approval of NMVC Company's Investment Adviser/Manager. You may employ an Investment Adviser/Manager who will be subject to the supervision of your board of directors...

  11. 13 CFR 120.524 - When is SBA released from liability on its guarantee?

    Science.gov (United States)

    2010-01-01

    ... any of the events below occur: (1) The Lender has failed to comply materially with any Loan Program Requirement for 7(a) loans. (2) The Lender has failed to make, close, service, or liquidate a loan in a prudent manner; (3) The Lender's improper action or inaction has placed SBA at risk; (4) The Lender has...

  12. Pore-expanded SBA-15 sulfonic acid silicas for biodiesel synthesis.

    Science.gov (United States)

    Dacquin, J P; Lee, A F; Pirez, C; Wilson, K

    2012-01-07

    Here we present the first application of pore-expanded SBA-15 in heterogeneous catalysis. Pore expansion over the range 6-14 nm confers a striking activity enhancement towards fatty acid methyl ester (FAME) synthesis from triglycerides (TAG), and free fatty acid (FFA), attributed to improved mass transport and acid site accessibility. This journal is © The Royal Society of Chemistry 2012

  13. Effect of amine functionalization of spherical MCM-41 and SBA-15 on controlled drug release

    International Nuclear Information System (INIS)

    Szegedi, A.; Popova, M.; Goshev, I.; Mihaly, J.

    2011-01-01

    MCM-41 and SBA-15 silica materials with spherical morphology and different particle sizes were synthesized and modified by post-synthesis method with 3-aminopropyltriethoxysilane (APTES). A comparative study of the adsorption and release of a model drug, ibuprofen, were carried out. The modified and drug loaded mesoporous materials were characterized by XRD, TEM, N 2 physisorption, thermal analysis, elemental analysis and FT-IR spectroscopy. Surface modification with amino groups resulted in high degree of ibuprofen loading and slow rate of release for MCM-41, whereas it was the opposite for SBA-15. The adsorbed drug content and the delivery rate can be predetermined by the choice of mesoporous material with the appropriate structural characteristics and surface functionality. -- Graphical Abstract: Ibuprofen delivery from the parent and amino-modified spherical MCM-41 materials with 100 nm (small) and 500 nm (large) particle sizes. Display Omitted Highlights: → Spherical type MCM-41 and SBA-15 with different particle sizes were modified by APTES. → Adsorption and release rate of ibuprofen were compared. → High degree of ibuprofen loading, slow release rate for MCM-41, the opposite for SBA-15. → MCM-41 with 100 nm particles was more stable and showed slower release rate

  14. Selective synthesis of vitamin K3 over mesoporous NbSBA-15 catalysts synthesized by an efficient hydrothermal method.

    Science.gov (United States)

    Selvaraj, M; Park, D-W; Kim, I; Kawi, S; Ha, C S

    2012-08-28

    Well hexagonally ordered NbSBA-15 catalysts synthesized by an efficient hydrothermal method were used, for the first time, for the selective synthesis of vitamin K(3) by liquid-phase oxidation of 2-methyl-1-naphthol (2MN1-OH) under various reaction conditions. The recyclable NbSBA-15 catalysts were also reused to find their catalytic activities. To investigate the leaching of non-framework niobium species on the surface of silica networks, the results of original and recyclable NbSBA-15 catalysts were correlated and compared. To find an optimum condition for the selective synthesis of vitamin K(3), the washed NbSBA-15(2.2pH) was extensively used in this reaction with various reaction parameters such as temperature, time and ratios of reactant (2M1N-OH to H(2)O(2)), and the obtained results were also demonstrated. Additionally, the liquid-phase oxidation of 2M1N-OH was carried out with different solvents to find the best solvent with a good catalytic activity. Based on the all catalytic studies, the vitamin K(3) selectivity (97.3%) is higher in NbSBA-15(2.2pH) than that of other NbSBA-15 catalysts, and the NbSBA-15(2.2pH) is found to be a highly active and eco-friendly heterogeneous catalyst for the selective synthesis of vitamin K(3).

  15. Mechanism for enhanced degradation of clofibric acid in aqueous by catalytic ozonation over MnOx/SBA-15.

    Science.gov (United States)

    Sun, Qiangqiang; Wang, Yu; Li, Laisheng; Bing, Jishuai; Wang, Yingxin; Yan, Huihua

    2015-04-09

    Comparative experiments were conducted to investigate the catalytic ability of MnO(x)/SBA-15 for the ozonation of clofibric acid (CA) and its reaction mechanism. Compared with ozonation alone, the degradation of CA was barely enhanced, while the removal of TOC was significantly improved by catalytic ozonation (O3/MnO(x)/SBA-15). Adsorption of CA and its intermediates by MnO(x)/SBA-15 was proved unimportant in O3/MnO(x)/SBA-15 due to the insignificant adsorption of CA and little TOC variation after ceasing ozone in stopped-flow experiment. The more remarkably inhibition effect of sodium bisulfite (NaHSO3) on the removal of TOC in catalytic ozonation than in ozonation alone elucidated that MnO(x)/SBA-15 facilitated the generation of hydroxyl radicals (OH), which was further verified by electron spin-resonance spectroscopy (ESR). Highly dispersed MnO(x) on SBA-15 were believed to be the main active component in MnO(x)/SBA-15. Some intermediates were indentified and different degradation routes of CA were proposed in both ozonation alone and catalytic ozonation. The amounts of small molecular carboxylic acids (i.e., formic acid (FA), acetic acid (AA) and oxalic acid (OA)) generated in catalytic ozonation were lower than in ozonation alone, resulting from the generation of more OH. Copyright © 2014 Elsevier B.V. All rights reserved.

  16. Reliable Prediction of Insulin Resistance by a School-Based Fitness Test in Middle-School Children

    Directory of Open Access Journals (Sweden)

    Todd Varness

    2009-01-01

    Full Text Available Objectives. (1 Determine the predictive value of a school-based test of cardiovascular fitness (CVF for insulin resistance (IR; (2 compare a “school-based” prediction of IR to a “laboratory-based” prediction, using various measures of fitness and body composition. Methods. Middle school children (n=82 performed the Progressive Aerobic Cardiovascular Endurance Run (PACER, a school-based CVF test, and underwent evaluation of maximal oxygen consumption treadmill testing (VO2 max, body composition (percent body fat and BMI z score, and IR (derived homeostasis model assessment index [HOMAIR]. Results. PACER showed a strong correlation with VO2 max/kg (rs = 0.83, P<.001 and with HOMAIR (rs = −0.60, P<.001. Multivariate regression analysis revealed that a school-based model (using PACER and BMI z score predicted IR similar to a laboratory-based model (using VO2 max/kg of lean body mass and percent body fat. Conclusions. The PACER is a valid school-based test of CVF, is predictive of IR, and has a similar relationship to IR when compared to complex laboratory-based testing. Simple school-based measures of childhood fitness (PACER and fatness (BMI z score could be used to identify childhood risk for IR and evaluate interventions.

  17. Anchoring Tri(8-QuinolinolatoIron Onto Sba-15 for Partial Oxidation of Benzyl Alcohol Using Water as the Solvent

    Directory of Open Access Journals (Sweden)

    Yang Xiaoyuan

    2014-09-01

    Full Text Available Tri(8-quinolinolatoiron complex immobilized onto SBA-15 catalyst has been synthesized through a stepwise procedure. The characterization results indicated that the BET surface area, total pore volume and average pore width decrease after stepwise modification of SBA-15, while the structure keeps intact. Catalytic tests showed that FeQ3-SBA-15 catalyzes the oxidation reaction well with 34.8% conversion of benzyl alcohol and 74.7% selectivity to benzaldehyde when water is used as the solvent after 1 h reaction. In addition, homogeneous catalyst tri(8-quinolinolatoiron exhibits very bad catalytic behavior using water as the solvent.

  18. School-Based Education Programs for the Prevention of Child Sexual Abuse: A Cochrane Systematic Review and Meta-Analysis

    Science.gov (United States)

    Walsh, Kerryann; Zwi, Karen; Woolfenden, Susan; Shlonsky, Aron

    2018-01-01

    Objective: To assess evidence of the effectiveness of school-based education programs for the prevention of child sexual abuse (CSA). The programs deliver information about CSA and strategies to help children avoid it and encourage help seeking. Methods: Systematic review including meta-analysis of randomized controlled trials (RCTs), cluster…

  19. Process evaluation of a school-based weight gain prevention program: the Dutch Obesity Intervention in Teenagers (DOiT)

    NARCIS (Netherlands)

    Singh, A.S.; Chin A Paw, J.M.M.; Brug, J.; Mechelen, van W.

    2009-01-01

    Health promotion programs benefit from an accompanying process evaluation since it can provide more insight in the strengths and weaknesses of a program. A process evaluation was conducted to assess the reach, implementation, satisfaction and maintenance of a school-based program aimed at the

  20. High-Quality School-Based Pre-K Can Boost Early Learning for Children with Special Needs

    Science.gov (United States)

    Phillips, Deborah A.; Meloy, Mary E.

    2012-01-01

    This article assesses the effects of Tulsa, Oklahoma's school-based prekindergarten program on the school readiness of children with special needs using a regression discontinuity design. Participation in the pre-K program was associated with significant gains for children with special needs in early literacy scores, but not in math scores. These…

  1. Hopelessness and Loneliness among Suicide Attempters in School-Based Samples of Taiwanese, Philippine and Thai Adolescents

    Science.gov (United States)

    Page, Randy M.; Yanagishita, Jun; Suwanteerangkul, Jiraporn; Zarco, Emilia Patricia; Mei-Lee, Ching; Miao, Nae-Fang

    2006-01-01

    The aim of this study was to assess the level of suicide attempts in three school-based samples of Southeast Asian adolescents (Taipei, Taiwan; the Philippines; Chiang Mai, Thailand) and determine whether adolescent suicide attempters score higher on measures of hopelessness and loneliness relative to nonattempters. It was hypothesized that…

  2. Impact and Cost-Effectiveness Analysis of the National School-Based Sexuality Education Programme in Estonia

    Science.gov (United States)

    Kivela, Jari; Haldre, Kai; Part, Kai; Ketting, Evert; Baltussen, Rob

    2014-01-01

    Policy-makers making decisions on the implementation of school-based sexuality education (SE) programmes face two important questions: (1) what are the costs of implementing and scaling up SE programmes, and (2) what are the impacts? This paper responds to these questions by retrospectively assessing costs, impact and cost-effectiveness of the…

  3. Motivation and substance use outcomes among adolescents in a school-based intervention.

    Science.gov (United States)

    Serafini, Kelly; Shipley, Leandra; Stewart, David G

    2016-02-01

    The stages of change (Precontemplation, Contemplation, Preparation, Action, and Maintenance) have been well studied in adult populations. However, fewer studies have examined how the stages of change are related to adolescent substance use. Furthermore, there have been no studies that have examined how the stages of change relate to outcomes in a school-based intervention. To better capture adolescent motivation, we added an additional group to the Transtheoretical Model of Change, which we titled Coerced Action, to represent adolescents that made changes to their substance use despite low problem recognition (representing the internal motivation of Precontemplation and the change behaviors of the Action group). We then examined how the stages of change were related to a thorough assessment of substance use at baseline and corresponding treatment outcomes. Our sample consisted of 264 adolescents (mean age: 16.1, 44.5% Caucasian, 37.5% female) who participated in an 8-week, school-based Motivational Enhancement intervention. Results indicated significant group differences across the stages of change in substance use patterns (alcohol use, negative consequences, affective dysregulation), as well as treatment outcomes (alcohol use and negative consequences). For instance, adolescents in the Action group demonstrated more negative consequences at 16weeks follow-up than those in Precontemplation and Coerced Action, F(1, 3)=8.23, pmotivation among adolescent substance users within school-based settings. Copyright © 2015 Elsevier Ltd. All rights reserved.

  4. School Based Management. OSSC Bulletin Vol. 23, No. 10.

    Science.gov (United States)

    Pierce, Lawrence C.

    School-based management is an educational reform intended to reverse the trend toward increasing centralization of school administration. Though it has been claimed that centralization increases financial and educational equity, aids efficiency, and eases administration, examination of these claims reveals them to be based too often on incomplete,…

  5. Models for Delivering School-Based Dental Care.

    Science.gov (United States)

    Albert, David A.; McManus, Joseph M.; Mitchell, Dennis A.

    2005-01-01

    School-based health centers (SBHCs) often are located in high-need schools and communities. Dental service is frequently an addition to existing comprehensive services, functioning in a variety of models, configurations, and locations. SBHCs are indicated when parents have limited financial resources or inadequate health insurance, limiting…

  6. Physical Therapists' Perceptions of School-Based Practices.

    Science.gov (United States)

    Holt, Sheryl L; Kuperstein, Janice; Effgen, Susan K

    2015-01-01

    Surveys have reported that most school-based physical therapists perceive ideal practices are not commonly implemented in their settings. Our aim was to obtain a more in-depth understanding of these perceptions through open-ended inquiry. Qualitative data were derived from voluntary open-ended responses provided upon completion of a survey regarding school-based physical therapy practice. Of the survey's 561 participants, 250 provided open-ended commentaries that were analyzed using interpretive phenomenology. Six qualitative themes emerged from the open-ended responses, including: In quest: Meeting students' school-based needs via physical therapy; Seeking relatedness: Finding working teams in the school system; Building understanding: Developing a voice/identity in the school context; Stretched beyond limits: Managing workloads; Networking: Coordinating services outside school to meet student needs; Defying definition: What does working in an educational model mean? School-based physical therapists seek to meet educationally relevant physical therapy needs of students, ages 3 to 21 years. Successes appear woven of a multitude of factors such as therapist expertise, team dynamics, and district supports.

  7. School-Based First Aid Training Programs: A Systematic Review

    Science.gov (United States)

    Reveruzzi, Bianca; Buckley, Lisa; Sheehan, Mary

    2016-01-01

    Background: This review examines the breadth of first aid training delivered to school students and the components that are age appropriate to adolescents. Method: Eligible studies included school-based first aid interventions targeting students aged between 10 and 18 years. Online databases were searched, for peer-reviewed publications available…

  8. Family Involvement in School-Based Dysphagia Management

    Science.gov (United States)

    Angell, Maureen E.; Bailey, Rita L.; Nicholson, Joanna K.; Stoner, Julia B.

    2009-01-01

    This article provides a practitioner-friendly synthesis of existing literature on family involvement in the management of dysphagia for school-age. Research reviewed includes family perspectives on programs, therapists, and characteristics that comprise effective family involvement in school-based dysphagia management programs. Also included are…

  9. An Innovative School-Based Intervention to Promote Healthy Lifestyles

    Science.gov (United States)

    Piana, Natalia; Ranucci, Claudia; Buratta, Livia; Foglia, Elena; Fabi, Marta; Novelli, Francesca; Casucci, Simone; Reginato, Elisa; Pippi, Roberto; Aiello, Cristina; Leonardi, Alessia; Romani, Giannermete; De Feo, Pierpaolo; Mazzeschi, Claudia

    2017-01-01

    Objective: To describe an innovative school-based intervention to promote healthy lifestyles. To evaluate its effects on children's food habits and to highlight the key components which contribute most to the beneficial effects obtained from children's, teachers' and parents' perspectives. Design: An educational tool to improve personal awareness,…

  10. School-Based Experiential Outdoor Education: A Neglected Necessity

    Science.gov (United States)

    James, Joan K.; Williams, Theresa

    2017-01-01

    In this research study, we hear the voices of middle school students, preservice teachers, and practicing middle school teachers in support of school-based experiential outdoor education. The benefits of engaging youth in memorably relevant learning, immersing them in physically active, field-based education, and providing them with authentic,…

  11. Process evaluation of school-based peer education for HIV ...

    African Journals Online (AJOL)

    In 2005, a survey was conducted among all the 27 high schools of Aden, which revealed low levels of knowledge on major prevention measures, and a high level of stigma and discrimination towards people living with HIV (PLWH). The results served as a baseline for implementing a school-based peer education ...

  12. Comprehensive School-Based Physical Activity Promotion: A Review

    Science.gov (United States)

    Erwin, Heather; Beighle, Aaron; Carson, Russell L.; Castelli, Darla M.

    2013-01-01

    Physical activity (PA) participation levels among youth remain well below national recommendations. Thus, a variety of strategies to promote youth PA have been advocated, including multifaceted, school-based approaches. One identified as having great potential is a comprehensive school physical activity program (CSPAP). The goal of a CSPAP is to…

  13. The Equity Consequences of School-Based Management

    Science.gov (United States)

    Nir, Adam E.; Miran, Meir

    2006-01-01

    Purpose: The purpose of this paper is to examine the extent to which the introduction of school-based management (SBM) affects schools' incomes and educational equity? Design/methodology/approach: An analysis of financial reports coming from 31 SBM schools during a period of four sequential years reveals that the overall inequity among schools has…

  14. Emotional Regulation: Considerations for School-Based Group Interventions

    Science.gov (United States)

    Augustyniak, Kristine M.; Brooks, Morgan; Rinaldo, Vincent J.; Bogner, Roselind; Hodges, Shannon

    2009-01-01

    School-based professionals have entered the 21st century with a heightened call to address the emotional and behavioral concerns of youth. While cognitive-behavioral therapies and psychoeducational groups have demonstrated moderate effects with children and adolescents, there is little available research to assist clinicians in refining treatments…

  15. Consultation: Creating School-Based Interventions. Second Edition.

    Science.gov (United States)

    Dinkmeyer, Don, Jr.; Carlson, Jon

    Decades after consultation has become a mandated function of school counselors, consultants still seek effective ways to deliver this essential role. This book, geared towards mental health professionals, provides a set of skills for working with the school-based population. The ideas, based on Adlerian psychology, present a theory of consultation…

  16. School-Based Sexuality Education in Portugal: Strengths and Weaknesses

    Science.gov (United States)

    Rocha, Ana Cristina; Leal, Cláudia; Duarte, Cidália

    2016-01-01

    Portugal, like many other countries, faces obstacles regarding school-based sexuality education. This paper explores Portuguese schools' approaches to implementing sexuality education at a local level, and provides a critical analysis of potential strengths and weaknesses. Documents related to sexuality education in a convenience sample of 89…

  17. Crisis Intervention Strategies for School-Based Helpers. Second Edition.

    Science.gov (United States)

    Fairchild, Thomas N., Ed.

    School-based helpers are helping professionals who work within educational settings and whose training and primary responsibility is to promote the mental health of students. Few resource materials provide these helpers with needed information and practical strategies--this text tries to meet that need. The 12 chapters here cover a wide range of…

  18. School-Based Adolescent Groups: The Sail Model.

    Science.gov (United States)

    Thompson, John L.; And Others

    The manual outlines the processes, policies, and actual program implementation of one component of a Minnesota program for emotionally disturbed adolescents (Project SAIL): the development of school-based therapy/intervention groups. The characteristics of SAIL students are described, and some considerations involved in providing group services…

  19. Effects of a school-based pediatric obesity prevention program

    Science.gov (United States)

    The purpose of this study was to evaluate a school-based pediatric obesity program for elementary children. Children (n = 782) were between the ages of 7 and 9 and in the 2nd grade. A total of 323 (189 males) children who exceeded the 85th percentile for BMI were randomized into an integrated health...

  20. The Impact of Community Violence on School-Based Research

    Science.gov (United States)

    Velsor-Friedrich, Barbara; Richards, Maryse; Militello, Lisa K.; Dean, Kyle C.; Scott, Darrick; Gross, Israel M.; Romeo, Edna

    2015-01-01

    Research conducted on youth exposure to violence has generally focused on documenting the prevalence of community violence and its emotional and behavioral implications. However, there is a dearth of information related to the impact of violence on the implementation and evaluation of community and school-based programs. This commentary examines…

  1. School-Based Decision-Making: The Canadian Perspective.

    Science.gov (United States)

    Peters, Frank

    1997-01-01

    In Canada, school-based decision making is a political expedient to co-opt public support for public education at the same time as financial resources to schools are being curtailed. School councils are advisory in nature and have no statutory position in either school or school-system decisions. (17 references) (MLF)

  2. A history of adolescent school based vaccination in Australia.

    Science.gov (United States)

    Ward, Kirsten; Quinn, Helen; Menzies, Robert; McIntyre, Peter

    2013-06-30

    As adolescents have become an increasingly prominent target group for vaccination, school-based vaccination has emerged as an efficient and effective method of delivering nationally recommended vaccines to this often hard to reach group. School-based delivery of vaccines has occurred in Australia for over 80 years and has demonstrated advantages over primary care delivery for this part of the population. In the last decade school-based vaccination programs have become routine practice across all Australian states and territories. Using existing records and the recollection of experts we have compiled a history of school-based vaccination in Australia, primarily focusing on adolescents. This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from the Commonwealth. Requests and inquiries concerning reproduction and rights should be addressed to the Commonwealth Copyright Administration, Attorney General's Department, Robert Garran Offices, National Circuit, Barton ACT 2600 or posted at http://www.ag.gov.au/cca.

  3. The Current Practices and Problems of School Based Supervision in ...

    African Journals Online (AJOL)

    The purpose of this study was to identify the current practice and problems of school based supervision in government primary schools of Jile Timuga Woreda of Oromia Zone. A descriptive survey design of research methodology was employed. Regarding sampling, there were 39 primary schools grouped in 10 cluster ...

  4. The Democratic Deficit and School-Based Management in Australia

    Science.gov (United States)

    Kimber, Megan; Ehrich, Lisa Catherine

    2011-01-01

    Purpose: The paper seeks to apply the theory of the democratic deficit to school-based management with an emphasis on Australia. This theory was developed to examine managerial restructuring of the Australian Public Service in the 1990s. Given similarities between the use of managerial practices in the public service and government schools, the…

  5. Responsibility, Authority, and Accountability in School-Based and Non-School-Based Management: Principals' Coping Strategies

    Science.gov (United States)

    Grinshtain, Yael; Gibton, Dan

    2018-01-01

    Purpose: The purpose of this paper is to understand how primary school principals in Israel cope with the gaps between authority and responsibility in their work, deriving from partially implemented decentralization processes, and how this relates to school-based management (SBM) and accountability principles. Design/methodology/approach: Using…

  6. H2 formation by electron irradiation of SBA-15 materials and the effect of Cu(II) grafting

    International Nuclear Information System (INIS)

    Brodie-Linder, N.; Le Caer, S.; Shahdo Alam, M.; Renault, J.P.; Alba-Simionesco, Ch.

    2010-01-01

    Measurement of H 2 production from electron irradiation (10 MeV) on SBA-15 materials has shown that adsorbed water is attacked preferentially. Silanol groups are only attacked when they are in the majority with respect to adsorbed water, however they are much less efficient at producing H 2 . The comparison between water content before and after electron irradiation and the corresponding H 2 production indicates that water desorption is the main route to adsorbed water loss for SBA-15 materials. On the other hand, surface silanol groups are more susceptible to attack,leading to H 2 production when SBA-15 samples have undergone extensive thermal treatment. Electron irradiation of SBA-15-Cu materials has shown that the presence of Cu(II) on the surface reduces and inhibits the production of H 2 . This inhibiting power affects adsorbed water bonded to grafted copper but not surface silanol groups. (authors)

  7. 13 CFR 108.1630 - SBA regulation of Brokers and Dealers and disclosure to purchasers of Leverage or Trust...

    Science.gov (United States)

    2010-01-01

    ... Financial Assistance for NMVC Companies (Leverage) Funding Leverage by Use of Sba Guaranteed Trust... standing in respect to compliance with the financial, ethical, and reporting requirements of such body...

  8. 13 CFR 121.410 - What are the size standards for SBA's Section 8(d) Subcontracting Program?

    Science.gov (United States)

    2010-01-01

    ... Size Eligibility Requirements for Government Procurement § 121.410 What are the size standards for SBA... Small Business Act, a concern is small for subcontracts which relate to Government procurements if it...

  9. Glass composite waste forms for iodine confined in bismuth-embedded SBA-15

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Jae Hwan [Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute, 989-111 Daeduk-daero, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of); Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 (Korea, Republic of); Park, Hwan Seo; Ahn, Do-Hee [Nuclear Fuel Cycle Process Development Division, Korea Atomic Energy Research Institute, 989-111 Daeduk-daero, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of); Yim, Man-Sung, E-mail: msyim@kaist.ac.kr [Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 (Korea, Republic of)

    2016-11-15

    The aim of this study was to stabilize bismuth-embedded SBA-15 that captured iodine gas by fabrication of monolithic waste forms. The iodine containing waste was mixed with Bi{sub 2}O{sub 3} (a stabilizing additive) and low-temperature sintering glass followed by pelletizing and the sintering process to produce glass composite materials. Iodine volatility during the sintering process was significantly affected by the ratio of Bi{sub 2}O{sub 3} and the glass composition. It was confirmed that BiI{sub 3}, the main iodine phase within bismuth-embedded SBA-15, was effectively transformed to the mixed phases of Bi{sub 5}O{sub 7}I and BiOI. The initial leaching rates of iodine from the glass composite waste forms ranged 10{sup −3}–10{sup −2} g/m{sup 2} day, showing the stability of the iodine phases encapsulated by the glassy networks. It was also observed that common groundwater anions (e.g., chloride, carbonate, sulfite, and fluoride) elevated the iodine leaching rate by anion exchange reactions. The present results suggest that the glass composite waste form of bismuth-embedded SBA-15 could be a candidate material for stable storage of {sup 129}I. - Highlights: • Glass composite waste forms were developed to stabilize iodine confined in Bi-embedded SBA-15. • BiI{sub 3} within Bi-embedded SBA-15 was transformed to BiOI and Bi{sub 5}O{sub 7}I during sintering process. • Iodine volatility was significantly affected by glass composition and Bi{sub 2}O{sub 3} additive. • Iodine leaching rates were 10{sup −3}–10{sup −2} g/m{sup 2} day due to the stable iodine phases encapsulated by glassy networks. • Glass composite waste form of Bi-embedded SBA-15 is expected to be a candidate material for stable storage of {sup 129}I.

  10. Effects of carbon coating and pore corrugation on capillary condensation of nitrogen in SBA-15 mesoporous silica.

    Science.gov (United States)

    Morishige, Kunimitsu

    2013-09-24

    To examine the origin of an ink-bottle-like structure in SBA-15 formed by carbon coating and the effects of pore corrugation on capillary condensation and evaporation of a vapor in the cylindrical pores, we measured the adsorption isotherms of nitrogen at 77 K on 10 kinds of SBA-15 samples before and after a carbon coating process by the exposure to acetylene at 1073 K, as well as desorption scanning curves and subloops on the untreated samples. These SBA-15 samples were synthesized under the different conditions of initial SiO2/P123 ratio and hydrothermal treatment. SBA-15 with relatively large microporosity tends to form easily constrictions inside the main channels by the carbon coating. This strongly suggests that the rough pore walls of SBA-15 may induce the incomplete wetting of carbon layers on the pore walls to form the constrictions inside the cylindrical pores. A comparison of two subloops implies that the pores of SBA-15 synthesized with a SiO2/P123 ratio of 75 consist of an assembly of connecting domains of different diameters; that is, the pores are highly corrugated. For SBA-15 synthesized with a SiO2/P123 ratio of 60, the amplitude of the pore corrugation is significantly decreased by the prolonged hydrothermal treatment at 373 K. On the other hand, for SBA-15 synthesized with a SiO2/P123 ratio of 45, the amplitude of the corrugation is negligibly small, although the cylindrical pores are interconnected through narrow necks with each other. It is found that the smaller the amplitude of the pore corrugation, the smaller the width of the hysteresis loop.

  11. School-Based Interventions Going Beyond Health Education to Promote Adolescent Health: Systematic Review of Reviews.

    Science.gov (United States)

    Shackleton, Nichola; Jamal, Farah; Viner, Russell M; Dickson, Kelly; Patton, George; Bonell, Christopher

    2016-04-01

    Health education in school classrooms can be effective in promoting sexual health and preventing violence and substance use but effects are patchy and often short term. Classroom education is also challenging because of schools' increasing focus on academic-performance metrics. Other school-based approaches are possible, such as healthy school policies, improving how schools respond to bullying, and parent outreach, which go beyond health education to address broader health determinants. Existing systematic reviews include such interventions but often alongside traditional health education. There is scope for a systematic review of reviews to assess and synthesize evidence across existing reviews to develop an overview of the potential of alternative school-based approaches. We searched 12 databases to identify reviews published after 1980. Data were reviewed by two researchers. Quality was assessed using a modified Assessing the Methodological Quality of Systematic Reviews checklist and results were synthesized narratively. We screened 7,544 unique references and included 22 reviews. Our syntheses suggest that multicomponent school-based interventions, for example, including school policy changes, parent involvement, and work with local communities, are effective for promoting sexual health and preventing bullying and smoking. There is less evidence that such intervention can reduce alcohol and drug use. Economic incentives to keep girls in school can reduce teenage pregnancies. School clinics can promote smoking cessation. There is little evidence that, on their own, sexual-health clinics, antismoking policies, and various approaches targeting at-risk students are effective. There is good evidence that various whole-school health interventions are effective in preventing teenage pregnancy, smoking, and bullying. Copyright © 2016 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.

  12. The research landscape of school-based sexuality education

    DEFF Research Database (Denmark)

    Roien, Line Anne; Graugaard, Christian; Simovska, Venka

    2018-01-01

    pupils 6 to 12 years of age. Design/methodology/approach - The paper draws upon the methodology of systematic research mapping and presents a broad overview of research on sexuality education in a school setting for pupils aged 6-16. We searched the leading bibliographic databases in the field, i...... a rare, if not the first, comprehensive overview of research on school-based sexuality education including a focus on school children 6 to 12 years of age.......Purpose - The purpose of this paper is to map and discuss the overall characteristics of international research on school-based sexuality education, published in academic journals, with a particular focus on the framing of non-conservative approaches including sex education research targeting...

  13. Selective Preparation of trans-Carveol over Ceria Supported Mesoporous Materials MCM-41 and SBA-15

    Directory of Open Access Journals (Sweden)

    Nariman F. Salakhutdinov

    2013-05-01

    Full Text Available Ce-modified mesoporous silica materials MCM-41 and SBA-15, namely 32 wt % Ce–Si–MCM-41, 16 wt % Ce–H–MCM-41 and 20 wt % Ce–Si–SBA-15, were prepared, characterized and studied in the selective preparation of trans-carveol by α-pinene oxide isomerization. The characterizations of these catalysts were performed using scanning electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption and FTIR pyridine adsorption. Selective preparation of trans-carveol was carried out in the liquid phase in a batch reactor. The activity and the selectivity of catalyst were observed to be influenced by their acidity, basicity and morphology of the mesoporous materials. The formation of trans-carveol is moreover strongly influenced by the basicity of the used solvent and in order to achieve high yields of this desired alcohol it is necessary to use polar basic solvent.

  14. Global school-based childhood obesity interventions: a review.

    Science.gov (United States)

    Ickes, Melinda J; McMullen, Jennifer; Haider, Taj; Sharma, Manoj

    2014-08-28

    The issue of childhood overweight and obesity has become a global public health crisis. School-based interventions have been developed and implemented to combat this growing concern. The purpose of this review is to compare and contrast U.S. and international school-based obesity prevention interventions and highlight efficacious strategies. A systematic literature review was conducted utilizing five relevant databases. Inclusion criteria were: (1) primary research; (2) overweight or obesity prevention interventions; (3) school-based; (4) studies published between 1 January 2002 through 31 December 2013; (5) published in the English language; (6) child-based interventions, which could include parents; and (7) studies that reported outcome data. A total of 20 interventions met the inclusion criteria. Ten interventions each were implemented in the U.S. and internationally. International interventions only targeted elementary-aged students, were less likely to target low-income populations, and were less likely to be implemented for two or more years in duration. However, they were more likely to integrate an environmental component when compared to U.S. interventions. Interventions implemented in the U.S. and internationally resulted in successful outcomes, including positive changes in student BMI. Yet, varying approaches were used to achieve success, reinforcing the fact that a one-size-fits-all approach is not necessary to impact childhood obesity. However, building on successful interventions, future school-based obesity prevention interventions should integrate culturally specific intervention strategies, aim to incorporate an environmental component, and include parents whenever possible. Consideration should be given to the potential impact of long-term, frequent dosage interventions, and subsequent follow-up should be given attention to determine long-term efficacy.

  15. Adolescent health care: improving access by school-based service.

    Science.gov (United States)

    Gonzales, C; Mulligan, D; Kaufman, A; Davis, S; Hunt, K; Kalishman, N; Wallerstein, N

    1985-10-01

    Participants in this discussion of the potential of school-based health care services for adolescents included family medicine physicians, school health coordinators, a school nurse, and a community worker. It was noted that health care for adolescents tends to be either inaccessible or underutilized, largely because of a lack of sensitivity to adolescent culture and values. An ideal service for adolescents would offer immediate services for crises, strict confidentiality, ready access to prescribed medications, a sliding-scale scheme, and a staff that is tolerant of divergent values and life-styles. School-based pilot adolescent clinics have been established by the University of New Mexico's Department of Family, Community, and Emergency Medicine to test the community-oriented health care model. On-site clinics provide urgent medical care, family planning, pregnancy testing, psychological counseling, alcohol and drug counseling, and classroom health education. Experience with these programs has demonstrated the necessity for an alliance among the health team and the school administration, parents, and students. Financial, ethical, and political factors can serve as constraints to school-based programs. In some cases, school administrators have been resistant to the provision of contraception to students on school grounds and parents have been unwilling to accept the adolescent's right to confidentiality. These problems in part stem from having 2 separate systems, each with its own values, orientation, and responsibilities, housed in 1 facility. In addition, there have been problems generating awareness of the school-based clinic among students. Health education theater groups, peer counseling, and student-run community services have been effective, however, in increasing student participation. It has been helpful to mold clinic services to meet the needs identified by teenagers themselves. There is an interest not only in curative services, but in services focused

  16. Global School-Based Childhood Obesity Interventions: A Review

    Directory of Open Access Journals (Sweden)

    Melinda J. Ickes

    2014-08-01

    Full Text Available Background: The issue of childhood overweight and obesity has become a global public health crisis. School-based interventions have been developed and implemented to combat this growing concern. The purpose of this review is to compare and contrast U.S. and international school-based obesity prevention interventions and highlight efficacious strategies. Methods: A systematic literature review was conducted utilizing five relevant databases. Inclusion criteria were: (1 primary research; (2 overweight or obesity prevention interventions; (3 school-based; (4 studies published between 1 January 2002 through 31 December 2013; (5 published in the English language; (6 child-based interventions, which could include parents; and (7 studies that reported outcome data. Results: A total of 20 interventions met the inclusion criteria. Ten interventions each were implemented in the U.S. and internationally. International interventions only targeted elementary-aged students, were less likely to target low-income populations, and were less likely to be implemented for two or more years in duration. However, they were more likely to integrate an environmental component when compared to U.S. interventions. Discussion: Interventions implemented in the U.S. and internationally resulted in successful outcomes, including positive changes in student BMI. Yet, varying approaches were used to achieve success, reinforcing the fact that a one-size-fits-all approach is not necessary to impact childhood obesity. However, building on successful interventions, future school-based obesity prevention interventions should integrate culturally specific intervention strategies, aim to incorporate an environmental component, and include parents whenever possible. Consideration should be given to the potential impact of long-term, frequent dosage interventions, and subsequent follow-up should be given attention to determine long-term efficacy.

  17. Print News Coverage of School-Based HPV Vaccine Mandate

    Science.gov (United States)

    Casciotti, Dana; Smith, Katherine C.; Andon, Lindsay; Vernick, Jon; Tsui, Amy; Klassen, Ann C.

    2015-01-01

    BACKGROUND In 2007, legislation was proposed in 24 states and the District of Columbia for school-based HPV vaccine mandates, and mandates were enacted in Texas, Virginia, and the District of Columbia. Media coverage of these events was extensive, and media messages both reflected and contributed to controversy surrounding these legislative activities. Messages communicated through the media are an important influence on adolescent and parent understanding of school-based vaccine mandates. METHODS We conducted structured text analysis of newspaper coverage, including quantitative analysis of 169 articles published in mandate jurisdictions from 2005-2009, and qualitative analysis of 63 articles from 2007. Our structured analysis identified topics, key stakeholders and sources, tone, and the presence of conflict. Qualitative thematic analysis identified key messages and issues. RESULTS Media coverage was often incomplete, providing little context about cervical cancer or screening. Skepticism and autonomy concerns were common. Messages reflected conflict and distrust of government activities, which could negatively impact this and other youth-focused public health initiatives. CONCLUSIONS If school health professionals are aware of the potential issues raised in media coverage of school-based health mandates, they will be more able to convey appropriate health education messages, and promote informed decision-making by parents and students. PMID:25099421

  18. Stability and Catalytic Kinetics of Horseradish Peroxidase Confined in Nanoporous SBA-15

    DEFF Research Database (Denmark)

    Ikemoto, Hediki; Chi, Qijin; Ulstrup, Jens

    2010-01-01

    We have synthesized nanoporous silica, SBA-15 in the 1 m size range with the pore diameter of 7.6 nm. The redox enzyme horseradish peroxidase (HRP) was entrapped in the pores to form nanostructured hybrid materials. The catalytic activity of free and immobilized enzyme was first compared at room...... likely due to different hydrogen bonding of water and increased hydration strength of the protein inside the nanopores....

  19. Low temperature oxidative desulfurization with hierarchically mesoporous titaniumsilicate Ti-SBA-2 single crystals.

    Science.gov (United States)

    Shi, Chengxiang; Wang, Wenxuan; Liu, Ni; Xu, Xueyan; Wang, Danhong; Zhang, Minghui; Sun, Pingchuan; Chen, Tiehong

    2015-07-21

    Hierarchically porous Ti-SBA-2 with high framework Ti content (up to 5 wt%) was firstly synthesized by employing organic mesomorphous complexes of a cationic surfactant (CTAB) and an anionic polyelectrolyte (PAA) as templates. The material exhibited excellent performance in oxidative desulfurization of diesel fuel at low temperature (40 °C or 25 °C) due to the unique hierarchically porous structure and high framework Ti content.

  20. Development of efficient amine-modified mesoporous silica SBA-15 for CO2 capture

    International Nuclear Information System (INIS)

    Zhang, Xiaoyun; Qin, Hongyan; Zheng, Xiuxin; Wu, Wei

    2013-01-01

    Graphical abstract: - Highlights: • A secondary amine AN-TEPA is used to modify the SBA-15. • CO 2 adsorption capacity (180.1 mg g −1 -adsorbent for 70% amine loading) is high. • The sorbent exhibits a high stability after 12 cycling runs. • The modified SBA-15 achieves complete desorption at low temperature (100 °C). - Abstract: A novel CO 2 sorbent was prepared by impregnating mesoporous silica, SBA-15, with acrylonitrile (AN)-modified tetraethylenepentamine (TEPA) in order to increase CO 2 adsorption capacity and improve cycling stability. The mesoporous silica with pre- and post-surface modification was investigated by X-ray diffraction characterization (XRD), N 2 adsorption–desorption test (N 2 -BET), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). The adsorption/desorption performance of S-TN (TN: AN modified TEPA) and S-TEPA was studied by dynamic adsorption. Test results showed that the solid base-impregnated SBA-15 demonstrated high CO 2 adsorption capacity (180.1 mg g −1 -adsorbent for 70% amine loading level). Compared to S-TEPA (24.1% decrease of initial capacity), S-TN with 50% amine loading exhibited improved cycling stability, 99.9% activity reserved (from initial 153.0 mg g −1 to 151.3 mg g −1 ) after 12 cycles of adsorption/desorption at 100 °C. A mechanism of molecular structure of the loaded amine was attributed to the improved performance

  1. Synthesis of Pt-Sn core-shell nanoparticles deposited on SBA-15 modified

    Energy Technology Data Exchange (ETDEWEB)

    Alvarez-Contreras, L.; Alonso-Lemus, I. [Centro de Investigacion en Materiales Avanzados S.C., Laboratorio Nacional de Nanotecnologia (Mexico); Botte, G. G. [Ohio University, Center for Electrochemical Engineering Research, Department of Chemical and Biomolecular Engineering (United States); Verde-Gomez, Y., E-mail: ysmaelverde@yahoo.com [Instituto Tecnologico de Cancun (Mexico)

    2013-07-15

    A novel one-step synthesis method to prepare Pt-Sn bimetallic nanoparticles supported on mesoporous silica with high surface area (SBA-15, 700 m{sup 2}/g) and narrow pore size distribution (around 9.5 nm) was developed. Tin incorporation plays an important dual role, to create active sites into the silica walls that serve as particles anchors center, and to grow Pt-Sn core-shell nanoparticles. High-resolution transmission and scanning electron microscopy, and X-ray diffraction pattern confirm the formation of the Pt-Sn core-shell type nanoparticles ( Almost-Equal-To 1-10 nm). The metal loading was 2.2 and 2.3 wt% for Pt and Sn, respectively. Electron microscopy results show that the metal nanoparticles were deposited not only on the matrix, but also inside of it. Structural, textural, and morphological features of the SBA-15 were slightly affected after the nanoparticles deposition, maintaining its high surface area. The results obtained suggest that Pt-Sn on SBA-15 could be attractive material for several catalytic applications, due to the narrow particle size distribution achieved (from 1 to 10 nm) the high dispersion on the support, as well as the Pt-Sn alloy developed.Graphical Abstract.

  2. Thermoresponsive copolymer-grafted SBA-15 porous silica particles for temperature-triggered topical delivery systems

    Directory of Open Access Journals (Sweden)

    S. A. Jadhav

    2017-02-01

    Full Text Available A series of poly(N-isopropylacrylamide-co-acrylamide thermoresponsive random copolymers with different molecular weights and composition were synthesized and characterized by attenuated total reflectance Fourier-transform infrared (ATR-FTIR, differential scanning calorimetry (DSC, size exclusion chromatography (SEC and proton nuclear magnetic resonance (NMR spectroscopy. The lower critical solution temperatures (LCST of the copolymers were tuned by changing the mole ratios of monomers. Copolymer with highest molecular weight and LCST (41.2 °C was grafted on SBA-15 type mesoporous silica particles by a two-step polymer grafting procedure. Bare SBA-15 and the thermoresponsive copolymergrafted (hybrid SBA-15 particles were fully characterized by scanning electron microscope (SEM, ATR-FTIR, thermogravimetric analysis (TGA and Brunauer-Emmett-Teller (BET analyses. The hybrid particles were tested for their efficiency as temperature-sensitive systems for dermal delivery of the antioxidant rutin (quercetin-3-O-rutinoside. Improved control over rutin release by hybrid particles was obtained which makes them attractive hybrid materials for drug delivery.

  3. Efficient low-temperature soot combustion by bimetallic Ag-Cu/SBA-15 catalysts.

    Science.gov (United States)

    Wen, Zhaojun; Duan, Xinping; Hu, Menglin; Cao, Yanning; Ye, Linmin; Jiang, Lilong; Yuan, Youzhu

    2018-02-01

    In this study, the effects of copper (Cu) additive on the catalytic performance of Ag/SBA-15 in complete soot combustion were investigated. The soot combustion performance of bimetallic Ag-Cu/SBA-15 catalysts was higher than that of monometallic Ag and Cu catalysts. The optimum catalytic performance was acquired with the 5Ag 1 -Cu 0.1 /SBA-15 catalyst, on which the soot combustion starts at T ig =225°C with a T 50 =285°C. The temperature for 50% of soot combustion was lower than that of conventional Ag-based catalysts to more than 50°C (Aneggi et al., 2009). Physicochemical characterizations of the catalysts indicated that addition of Cu into Ag could form smaller bimetallic Ag-Cu nanolloy particles, downsizing the mean particle size from 3.7nm in monometallic catalyst to 2.6nm in bimetallic Ag-Cu catalyst. Further experiments revealed that Ag and Cu species elicited synergistic effects, subsequently increasing the content of surface active oxygen species. As a result, the structure modifications of Ag by the addition of Cu strongly intensified the catalytic performance. Copyright © 2017. Published by Elsevier B.V.

  4. Glass composite waste forms for iodine confined in bismuth-embedded SBA-15

    Science.gov (United States)

    Yang, Jae Hwan; Park, Hwan Seo; Ahn, Do-Hee; Yim, Man-Sung

    2016-11-01

    The aim of this study was to stabilize bismuth-embedded SBA-15 that captured iodine gas by fabrication of monolithic waste forms. The iodine containing waste was mixed with Bi2O3 (a stabilizing additive) and low-temperature sintering glass followed by pelletizing and the sintering process to produce glass composite materials. Iodine volatility during the sintering process was significantly affected by the ratio of Bi2O3 and the glass composition. It was confirmed that BiI3, the main iodine phase within bismuth-embedded SBA-15, was effectively transformed to the mixed phases of Bi5O7I and BiOI. The initial leaching rates of iodine from the glass composite waste forms ranged 10-3-10-2 g/m2 day, showing the stability of the iodine phases encapsulated by the glassy networks. It was also observed that common groundwater anions (e.g., chloride, carbonate, sulfite, and fluoride) elevated the iodine leaching rate by anion exchange reactions. The present results suggest that the glass composite waste form of bismuth-embedded SBA-15 could be a candidate material for stable storage of 129I.

  5. Tobacco use related attitudes and behaviors in Indian Adolescents: association with school-based prevention education

    Directory of Open Access Journals (Sweden)

    Jagdish Khubchandani

    2017-06-01

    Full Text Available Background: Adolescent tobacco use in India has increased substantially within the past few decades. Schools can serve as an important avenue for prevention education, but little is known about the current practices of Indian schools in relation to tobacco use prevention education. Methods: To assess the extent and influence tobacco use prevention education in Indian schools,we analyzed the Global Youth Tobacco Survey data for India, which was a population-based study of a national random sample of 10112 students from 180 private and public schools.Variables such as student demographic profile, tobacco use behavior, perceptions about tobacco use, and exposure to school-based tobacco use prevention education were considered for analyses. Results: Prevalence of any form of tobacco use (14% and current smoking (8% was found to differ by gender. A quarter of the students believed that boys who smoke are more attractive or have more friends compared to non-smokers, and almost half of the students reported that smoking and health were never discussed as a part of a lesson in school. The association between school-based prevention education and tobacco use behavior was assessed (after adjustment forage, gender, and parental smoking. Students who were educated in school about tobacco use and its effects were significantly more likely to have negative attitude toward tobacco use and less likely to report use of tobacco. Conclusion: School-based tobacco use prevention education has beneficial influence on adolescents in India. Given the early age of initiation of tobacco use, school curricula in India should emphasize on tobacco use prevention education.

  6. An Exploration of the Role of Occupation in School-Based Occupational Therapy Practice

    Science.gov (United States)

    Benson, Jeryl DiSanti

    2010-01-01

    The purpose of this study was to explore the role of occupation in school-based occupational therapy practice. The research questions were (1) How do school-based occupational therapists describe the role of occupation during intervention? (2) Which theories of occupation do school-based occupational therapists associate with their own practice?…

  7. School-Based Mental Health Services: Definitions and Models of Effective Practice

    Science.gov (United States)

    Doll, Beth; Nastasi, Bonnie K.; Cornell, Laura; Song, Samuel Y.

    2017-01-01

    School-based mental health services are those delivered by school-employed and community-employed providers in school buildings. With the implementation of provisions of the Patient Protection and Affordable Care Act (2010) that funds school-based health centers, school-based mental health services could become more broadly available in…

  8. Social Networking as a Strategic Tool in the Management of School-Based Violence

    Science.gov (United States)

    Eke, Chidi Idi; Singh, Shakila

    2018-01-01

    School-based violence is serious, and on the rise in South African schools. The violence affects learners, teachers, communities and the management of schools. Towards finding possible ways to manage school violence, this article presents social networking as a strategic tool in the management of school-based violence in high schools, based on the…

  9. Service Use by At-Risk Youth after School-Based Suicide Screening

    Science.gov (United States)

    2009-01-01

    Objective We sought to examine follow-up service use by students identified at risk for suicidal behavior in a school-based screening program, and assess barriers to seeking services as perceived by youth and parents. Method We conducted a longitudinal study of 317 at-risk youth identified by a school-based suicide screening in six high schools in New York State. The at-risk teenagers and their parents were interviewed approximately two years after the initial screen to assess service use during the intervening period and identify barriers that may have interfered with seeking treatment. Results At the time of the screen, 72% of the at-risk students were not receiving any type of mental health service. Of these students, 51% were deemed in need of services and subsequently referred by us to a mental health professional. Nearly 70% followed through with the screening’s referral recommendations. Youth and their parents reported perceptions about mental health problems, specifically relating to the need for treatment, as the primary reasons for not seeking service. Conclusions Screening appears to be effective in enhancing the likelihood that students at risk for suicidal behavior will get into treatment. Well developed and systematic planning is needed to ensure that screening and referral services are coordinated so as to facilitate access for youth into timely treatment. PMID:19858758

  10. The health Oriented pedagogical project (HOPP) - a controlled longitudinal school-based physical activity intervention program.

    Science.gov (United States)

    Fredriksen, Per Morten; Hjelle, Ole Petter; Mamen, Asgeir; Meza, Trine J; Westerberg, Ane C

    2017-04-28

    The prevalence of non-communicable diseases (NCDs) is increasing worldwide, also among children. Information about primary prevention of NCD's is increasing; however, convincing strategies among children is needed. The present paper describes the design and methods in the Health Oriented Pedagogical Project (HOPP) study. The main objective is to evaluate the effects of a school-based physical activity intervention program on cardio-metabolic risk factors. Secondary objectives include assessment of physical, psychological and academic performance variables. The HOPP study is a 7 years longitudinal large-scale controlled intervention in seven elementary schools (n = 1545) with two control schools (n = 752); all aged 6-11 years at baseline. The school-based physical activity intervention program includes an increase in physical activity (PA) of 225 min/week as an integrated part of theoretical learning, in addition to the curriculum based 90 min/week of ordinary PA. Primary outcomes include cardio-metabolic risk factors measured as PA level, BMI status, waist circumference, muscle mass, percent fat, endurance test performance, total serum cholesterol, high-density lipoprotein (HDL), non-HDL, micro C-reactive protein (mCRP) and long-term blood sugar (HbA1c). In addition, secondary outcomes include anthropometric growth measures, physical fitness, quality of life (QoL), mental health, executive functions, diet and academic performance. HOPP will provide evidence of effects on cardio-metabolic risk factors after a long-term PA intervention program in elementary schoolchildren. School-based PA intervention programs may be an effective arena for health promotion and disease prevention. The study is registered in Clinical trials (ClinicalTrials.gov Identifier: NCT02495714 ) as of June 20 th - 2015, retrospectively registered. The collection of baseline values was initiated in mid-January 2015.

  11. A school-based public health model to reduce oral health disparities.

    Science.gov (United States)

    Dudovitz, Rebecca N; Valiente, Jonathan E; Espinosa, Gloria; Yepes, Claudia; Padilla, Cesar; Puffer, Maryjane; Slavkin, Harold C; Chung, Paul J

    2018-12-01

    Although dental decay is preventable, it remains the most common pediatric chronic disease. We describe a public health approach to implementing a scalable and sustainable school-based oral health program for low-income urban children. The Los Angeles Trust for Children's Health, a nonprofit affiliated with the Los Angeles Unified School District, applied a public health model and developed a broad-based community-coalition to a) establish a District Oral Health Nurse position to coordinate oral health services, and b) implement a universal school-based oral health screening and fluoride varnishing program, with referral to a dental home. Key informant interviews and focus groups informed program development. Parent surveys assessed preventative oral health behaviors and access to oral health services. Results from screening exams, program costs and rates of reimbursement were recorded. From 2012 to 2015, six elementary schools and three dental provider groups participated. Four hundred ninety-one parents received oral health education and 89 served as community oral health volunteers; 3,399 screenings and fluoride applications were performed on 2,776 children. Sixty-six percent of children had active dental disease, 27 percent had visible tooth decay, and 6 percent required emergent care. Of the 623 students who participated for two consecutive years, 56 percent had fewer or no visible caries at follow-up, while only 17 percent had additional disease. Annual program cost was $69.57 per child. Using a broad based, oral health coalition, a school-based universal screening and fluoride varnishing program can improve the oral health of children with a high burden of untreated dental diseases. © 2017 American Association of Public Health Dentistry.

  12. The health Oriented pedagogical project (HOPP - a controlled longitudinal school-based physical activity intervention program

    Directory of Open Access Journals (Sweden)

    Per Morten Fredriksen

    2017-04-01

    Full Text Available Abstract Background The prevalence of non-communicable diseases (NCDs is increasing worldwide, also among children. Information about primary prevention of NCD’s is increasing; however, convincing strategies among children is needed. The present paper describes the design and methods in the Health Oriented Pedagogical Project (HOPP study. The main objective is to evaluate the effects of a school-based physical activity intervention program on cardio-metabolic risk factors. Secondary objectives include assessment of physical, psychological and academic performance variables. Methods The HOPP study is a 7 years longitudinal large-scale controlled intervention in seven elementary schools (n = 1545 with two control schools (n = 752; all aged 6–11 years at baseline. The school-based physical activity intervention program includes an increase in physical activity (PA of 225 min/week as an integrated part of theoretical learning, in addition to the curriculum based 90 min/week of ordinary PA. Primary outcomes include cardio-metabolic risk factors measured as PA level, BMI status, waist circumference, muscle mass, percent fat, endurance test performance, total serum cholesterol, high-density lipoprotein (HDL, non-HDL, micro C-reactive protein (mCRP and long-term blood sugar (HbA1c. In addition, secondary outcomes include anthropometric growth measures, physical fitness, quality of life (QoL, mental health, executive functions, diet and academic performance. Discussion HOPP will provide evidence of effects on cardio-metabolic risk factors after a long-term PA intervention program in elementary schoolchildren. School-based PA intervention programs may be an effective arena for health promotion and disease prevention. Trial registration The study is registered in Clinical trials (ClinicalTrials.gov Identifier: NCT02495714 as of June 20th – 2015, retrospectively registered. The collection of baseline values was initiated in mid-January 2015.

  13. Adolescents' Perceptions of the Economy: Its Association with Academic Engagement and the Role of School-Based and Parental Relationships.

    Science.gov (United States)

    Hill, Nancy E; Liang, Belle; Bravo, Diamond Y; Price, Maggi; Polk, Whitney; Perella, John; Savitz-Romer, Mandy

    2018-05-01

    In the context of widespread media coverage of economic problems, un- and under-employment, and overwhelming student loan debt, youth are making sense of the prospects of getting a job and value of education. Further, they are assessing the implications of the job market in curtailing or enhancing their future success. School-based and familial relationships may support students in making sense of the job market. The current study focuses on how youth view the economy, its association with academic engagement, and how parental and school-based relationships shape views of the job market and their impact on academic engagement. With an ethnically diverse sample of high school students (N = 624; 54% female), perceptions of the job market were tested as mediators and moderators of the relations between school-based relationships and parenting on academic engagement. Using structural equation modeling, job market pessimism mediated the relation between school-based relationships and engagement. School-based relationships and parenting practices moderated the relation between job market pessimism and academic engagement. At high levels of parental and school support, interpreted as increased centrality and salience of academic success, there was a stronger negative association between job market pessimism and academic engagement. This set of findings indicates that high school students are thinking about the job market in ways that impact their engagement in school. These findings extend theories that have focused on the job market and the likelihood of dropping out of school or enrolling in post-secondary education. These findings are significant because just staying in school is not enough to succeed. With increased emphasis on college and career readiness, students are required to be more planful and purposeful during high school in order to succeed in the job market.

  14. Microwave radiation hydrothermal synthesis and characterization of micro- and mesoporous composite molecular sieve Y/SBA-15

    Directory of Open Access Journals (Sweden)

    Wenyuan Wu

    2017-05-01

    Full Text Available A microwave radiation hydrothermal method to control synthesis of micro- and mesoporous Y/SBA-15 composite molecular sieves was reported. The synthesized SBA-15 and Y/SBA-15 were characterized by scanning electron microscopy (SEM and N2 adsorption–desorption. The three kinds of different concentrations of hydrochloric acid (0.75 M, 2 M and 3.25 M were used to investigate the effect on Y/SBA-15. The analysis results of the composite products indicated that the optimization synthesis condition employed zeolite type Y and TEOS as silicon sources under 0.75 M hydrochloric acid by the microwave radiation hydrothermal synthesis method. The N2 adsorption–desorption test results of micro–mesoporous composite molecular sieve type Y/SBA-15 in mesoporous extent indicated that SBET is 355.529 m2/g, D‾BET is 4.050 nm, and mesoporous aperture focuses on the distribution region of 5.3 nm. It was found that the received composite product has an appropriate proportion of smaller size, larger size pore structure and the thicker pore wall. In addition, its internal channels have a high degree of order and smooth flow in long-range channels.

  15. Comparison of two school-based programmes for health behaviour change: the Belo Horizonte Heart Study randomized trial.

    Science.gov (United States)

    Ribeiro, Robespierre Q C; Alves, Luciana

    2014-06-01

    To assess the efficacy of two school-based programmes to promote students' willingness to engage in lifestyle changes related to eating habits and physical activity behaviours. Elementary school-based health promotion intervention, designed as a multicomponent experimental study, based on a behavioural epidemiological model. Nine intervention and eight comparative public and private elementary schools. The goal was to determine the impact on the longitudinally assessed outcomes of two programmes that addressed healthy nutrition and active living in a cohort of 2038 children. The evaluations used pre-intervention and follow-up student surveys that were based on the Transtheoretical Model of the stages of behaviour change. In the intervention group, there were significant (P motivated teachers. The comparison group did not show significant differences between the pre- and post-intervention times for any of the stages of behaviour. The intervention programme encouraged the students to make healthy lifestyle choices related to eating habits and physical activity behaviours.

  16. Determining the Effects of Cognitive Style, Problem Complexity, and Hypothesis Generation on the Problem Solving Ability of School-Based Agricultural Education Students

    Science.gov (United States)

    Blackburn, J. Joey; Robinson, J. Shane

    2016-01-01

    The purpose of this experimental study was to assess the effects of cognitive style, problem complexity, and hypothesis generation on the problem solving ability of school-based agricultural education students. Problem solving ability was defined as time to solution. Kirton's Adaption-Innovation Inventory was employed to assess students' cognitive…

  17. Can school-based oral health education and a sugar-free chewing gum program improve oral health?

    DEFF Research Database (Denmark)

    Peng, Bin; Petersen, Poul Erik; Bian, Zhuan

    2004-01-01

    The purpose of the study was to assess the outcome of school-based oral health education (OHE) and a sugar-free chewing gum program on the oral health status of children in terms of reduced caries increment and gingival bleeding over a period of 2 years. Nine primary schools randomly chosen from......'s oral hygiene; in certain circumstances children may benefit from using polyol-containing chewing gum in terms of reduced dental caries....

  18. School-based smoking prevention programmes: ethical aspects.

    Science.gov (United States)

    Lotrean, Lucia Maria; Trofor, Antigona; Mihălţan, Florin; Santillan, Edna Arillo

    2011-01-01

    School-based health education has the potential to inform and educate young people, in order to promote healthy behaviours among them, which will help to prevent diseases and social problems. The present study gives an overview of several ethical issues which must be considered in different phases of school-based smoking prevention programs. This will help health educators, public health professionals and researchers in their activity of health education in schools. The ethical issues must be taken into consideration during all the activities and refer to the involvement of officials, schools, parents, young people who participate into the program, authors and persons/institutions responsible with the implementation, evaluation or funding of the programs. The application into practice of these ethical principles, influence the quality of the health education, its acceptability BY the target group and the correctness of results. Also, it prevents possible problems and misunderstandings between persons and institutions involved in the health education and smoking prevention process, which could seriously affect and even destroy implementation of such health education activities.

  19. School-based violence prevention strategy: a pilot evaluation.

    Science.gov (United States)

    Thakore, Rachel V; Apfeld, Jordan C; Johnson, Ronald K; Sathiyakumar, Vasanth; Jahangir, A Alex; Sethi, Manish K

    2015-07-01

    Violence has recently been reported among a primarily young, minority population in Nashville, Tennessee. School-based programs have been proven as effective methods of reducing violent behavior, beliefs, and actions that lead to violence among adolescents. Investigators implemented a rigorous search for an appropriate school-based violence prevention program for Metropolitan Nashville middle school students utilizing a systematic review and discussion group with victims of violence. 27 programs nation-wide were reviewed and 2 discussion groups with African American males under the age of 25 admitted to a level 1 trauma center for assault-related injuries were conducted. Our findings led to a single, evidence-based conflict resolution program. In conjunction with educators, we evaluated the program's effectiveness in a pilot study in a Nashville middle school with high rates of violence. 122 students completed the conflict resolution program and described their behavior and experiences with violence in a pre-test/post-test self-rate questionnaire. Results showed a significant decrease in violent behavior and an increase in students' competencies to deal with violence (p less than 0.05). This study shows that a reduction in violent behavior and beliefs among middle school students can be achieved through the implementation of a targeted violence intervention program. A larger-scale intervention is needed to develop more conclusive evidence of effectiveness. © 2015 KUMS, All rights reserved.

  20. A systematic review of school-based suicide prevention programs.

    Science.gov (United States)

    Katz, Cara; Bolton, Shay-Lee; Katz, Laurence Y; Isaak, Corinne; Tilston-Jones, Toni; Sareen, Jitender

    2013-10-01

    Suicide is one of the leading causes of death among youth today. Schools are a cost-effective way to reach youth, yet there is no conclusive evidence regarding the most effective prevention strategy. We conducted a systematic review of the empirical literature on school-based suicide prevention programs. Studies were identified through MEDLINE and Scopus searches, using keywords such as "suicide, education, prevention and program evaluation." Additional studies were identified with a manual search of relevant reference lists. Individual studies were rated for level of evidence, and the programs were given a grade of recommendation. Five reviewers rated all studies independently and disagreements were resolved through discussion. Sixteen programs were identified. Few programs have been evaluated for their effectiveness in reducing suicide attempts. Most studies evaluated the programs' abilities to improve students' and school staffs' knowledge and attitudes toward suicide. Signs of Suicide and the Good Behavior Game were the only programs found to reduce suicide attempts. Several other programs were found to reduce suicidal ideation, improve general life skills, and change gatekeeper behaviors. There are few evidence-based, school-based suicide prevention programs, a combination of which may be effective. It would be useful to evaluate the effectiveness of general mental health promotion programs on the outcome of suicide. The grades assigned in this review are reflective of the available literature, demonstrating a lack of randomized controlled trials. Further evaluation of programs examining suicidal behavior outcomes in randomized controlled trials is warranted. © 2013 Wiley Periodicals, Inc.

  1. School-Based First Aid Training Programs: A Systematic Review.

    Science.gov (United States)

    Reveruzzi, Bianca; Buckley, Lisa; Sheehan, Mary

    2016-04-01

    This review examines the breadth of first aid training delivered to school students and the components that are age appropriate to adolescents. Eligible studies included school-based first aid interventions targeting students aged between 10 and 18 years. Online databases were searched, for peer-reviewed publications available as at August 2014. A total of 20 journal articles were relevant to the review. Research supported programs with longer durations (3 hours or more). Most programs taught resuscitation alone and few included content that was context-specific and relevant to the target group. The training experience of the facilitator did not appear to impact on student outcomes. Incorporating both practical and didactic components was found to be an important factor in delivering material and facilitating the retention of knowledge. Educational resources and facilitator training were found to be common features of effective programs. The review supports first aid in school curriculum and provides details of key components pertinent to design of school-based first aid programs. The findings suggest that first aid training may have benefits wider than the uptake and retention of knowledge and skills. There is a need for future research, particularly randomized controlled trials to aid in identifying best practice approaches. © 2016, American School Health Association.

  2. Understanding the effect of post-synthesis ammonium treatment on the catalytic activity of Au/Ti-SBA-15 catalysts for the oxidation of propene

    NARCIS (Netherlands)

    Sacaliuc-Parvulescu, E.; Friedrich, H.; Palkovits, R.; Weckhuysen, B.M.; Nijhuis, T.A.

    2008-01-01

    Postsynthesis ammonium treatment induces a substantial increase in the catalytic activity of Au/Ti- SBA-15 catalysts for the direct vapor-phase epoxidation of propylene using hydrogen and oxygen. The PO formation rate of a calcined Au/Ti-SBA-15 catalyst prepared by this method increased from 4.3

  3. Understanding the effect of postsynthesis ammonium treatment on the catalytic activity of Au/TI-SBA-15 catalysts for the oxidation of propene

    NARCIS (Netherlands)

    Sacaliuc, E.; Friedrich, H.; Palkovits, R.; Weckhuysen, B.M.; Nijhuis, T.A.

    2008-01-01

    Postsynthesis ammonium treatment induces a substantial increase in the catalytic activity of Au/Ti-SBA-15 catalysts for the direct vapor-phase epoxidation of propylene using hydrogen and oxygen. The PO formation rate of a calcined Au/Ti-SBA-15 catalyst prepared by this method increased from 4.3 mgPO

  4. Generation of Well-Defined Pairs of Silylamine on Highly Dehydroxylated SBA-15: Application to the Surface Organometallic Chemistry of Zirconium

    KAUST Repository

    Azzi, Joachim

    2012-01-01

    achieved by an ammonia treatment of a highly dehydroxylated SBA-15 at 1000°C (SBA-151000). This support is known to contain mainly strained reactive siloxane bridges (≡Si-O-Si≡)[1] along with a small amount of isolated plus germinal silanols =Si(OH)2

  5. Tackling psychosocial risk factors for adolescent cyberbullying: Evidence from a school-based intervention.

    Science.gov (United States)

    Barkoukis, Vassilis; Lazuras, Lambros; Ourda, Despoina; Tsorbatzoudis, Haralambos

    2016-01-01

    Cyberbullying is an emerging form of bullying that takes place through contemporary information and communication technologies. Building on past research on the psychosocial risk factors for cyberbullying in this age group, the present study assessed a theory-driven, school-based preventive intervention that targeted moral disengagement, empathy and social cognitive predictors of cyberbullying. Adolescents (N = 355) aged between 16 and 18 years were randomly assigned into the intervention and the control group. Both groups completed anonymous structured questionnaires about demographics, empathy, moral disengagement and cyberbullying-related social cognitive variables (attitudes, actor prototypes, social norms, and behavioral expectations) before the intervention, post-intervention and 6 months after the intervention. The intervention included awareness-raising and interactive discussions about cyberbullying with intervention group students. Analysis of covariance (ANCOVA) showed that, after controlling for baseline measurements, there were significant differences at post-intervention measures in moral disengagement scores, and in favorability of actor prototypes. Further analysis on the specific mechanisms of moral disengagement showed that significant differences were observed in distortion of consequences and attribution of blame. The implications of the intervention are discussed, and guidelines for future school-based interventions against cyberbullying are provided. © 2015 Wiley Periodicals, Inc.

  6. The Cost-Effectiveness of School-Based Eating Disorder Screening

    Science.gov (United States)

    Austin, S. Bryn; LeAnn Noh, H.; Jiang, Yushan; Sonneville, Kendrin R.

    2014-01-01

    Objectives. We aimed to assess the value of school-based eating disorder (ED) screening for a hypothetical cohort of US public school students. Methods. We used a decision-analytic microsimulation model to model the effectiveness (life-years with ED and quality-adjusted life-years [QALYs]), total direct costs, and cost-effectiveness (cost per QALY gained) of screening relative to current practice. Results. The screening strategy cost $2260 (95% confidence interval [CI] = $1892, $2668) per student and resulted in a per capita gain of 0.25 fewer life-years with ED (95% CI = 0.21, 0.30) and 0.04 QALYs (95% CI = 0.03, 0.05) relative to current practice. The base case cost-effectiveness of the intervention was $9041 per life-year with ED avoided (95% CI = $6617, $12 344) and $56 500 per QALY gained (95% CI = $38 805, $71 250). Conclusions. At willingness-to-pay thresholds of $50 000 and $100 000 per QALY gained, school-based ED screening is 41% and 100% likely to be cost-effective, respectively. The cost-effectiveness of ED screening is comparable to many other accepted pediatric health interventions, including hypertension screening. PMID:25033131

  7. Engaging Mexican Origin Families in a School-Based Preventive Intervention

    Science.gov (United States)

    Mauricio, Anne M.; Gonzales, Nancy A.; Millsap, Roger E.; Meza, Connie M.; Dumka, Larry E.; Germán, Miguelina; Genalo, M. Toni

    2009-01-01

    This study describes a culturally sensitive approach to engage Mexican origin families in a school-based, family-focused preventive intervention trial. The approach was evaluated via assessing study enrollment and intervention program participation, as well as examining predictors of engagement at each stage. Incorporating traditional cultural values into all aspects of engagement resulted in participation rates higher than reported rates of minority-focused trials not emphasizing cultural sensitivity. Family preferred language (English or Spanish) or acculturation status predicted engagement at all levels, with less acculturated families participating at higher rates. Spanish-language families with less acculturated adolescents participated at higher rates than Spanish-language families with more acculturated adolescents. Other findings included two-way interactions between family language and the target child’s familism values, family single- vs. dual-parent status, and number of hours the primary parent worked in predicting intervention participation. Editors’ Strategic Implications: The authors present a promising approach—which requires replication—to engaging and retaining Mexican American families in a school-based prevention program. The research also highlights the importance of considering acculturation status when implementing and studying culturally tailored aspects of prevention models. PMID:18004659

  8. School-based sleep education program improves sleep and academic performance of school-age children.

    Science.gov (United States)

    Gruber, Reut; Somerville, Gail; Bergmame, Lana; Fontil, Laura; Paquin, Soukaina

    2016-05-01

    The objective of this study was to develop and evaluate the effectiveness of a school-based sleep education program aimed at improving the sleep and academic performance of school-age children. Using a community-based participatory research approach, we created a school-based sleep education program, "Sleep for Success"™ (SFS), composed of four distinct modules that addressed the children, their family and community, the school staff, and decision makers within the school setting. Implementation was carried out in three elementary schools. Seventy-one students participated in the evaluation of the program. The effectiveness of the SFS program was evaluated using non-randomized controlled before-and-after study groups (intervention and control) assessed over two time points (pre- and post-program implementation). Before (baseline) and after implementation, sleep and academic performance were measured using actigraphy and report card marks, respectively. In the intervention group, true sleep was extended by 18.2 min per night, sleep efficiency improved by 2.3%, and sleep latency was shortened by 2.3 min, and report card grades in mathematics and English improved significantly. No changes were noted in the control group. Participation in the sleep education program was associated with significant improvements in children's sleep and academic performance. Copyright © 2016 Elsevier B.V. All rights reserved.

  9. Characteristics of school-based health services associated with students' mental health.

    Science.gov (United States)

    Denny, Simon; Howie, Hamish; Grant, Sue; Galbreath, Ross; Utter, Jennifer; Fleming, Theresa; Clark, Terryann

    2018-01-01

    Objective School-based health services (SBHS) have been shown to improve access to mental health services but the evidence of their effectiveness on students' mental health is lacking. Our objective was to examine associations between variation in the provision of SBHS and students' mental health. Methods A cross-sectional analysis of a nationally representative health and well-being survey of 8500 New Zealand high school students conducted in March-November 2012. Students' mental health is related to data on school health services obtained from clinic leaders and clinicians from 90 participating high schools. Results After adjustment for socio-demographic differences in students between schools, increasing levels of services were associated with progressively lower levels of student-reported depressive symptoms (p = 0.002), emotional and behavioural difficulties (p = 0.004) and suicidality (p = 0.008). Services with greater levels of nursing hours (p = 0.02) and those that performed routine, comprehensive psychosocial assessments (p = 0.01) were both associated with lower levels of student-reported depressive symptoms. Greater levels of nursing hours and doctor hours were associated with lower self-reported suicidality among students. Conclusions Although a causal association between school-based health services and students' mental health cannot be demonstrated, these findings support the benefit of such services and the need for a cluster randomized trial.

  10. Impact of school-based health promotion interventions aimed at different behavioral domains: a systematic review.

    Science.gov (United States)

    Lima-Serrano, Marta; Lima-Rodríguez, Joaquín S

    2014-01-01

    Given that lifestyleshave similar determinants and that school-based interventions are usually targeted at all the risks that affect adolescents, the objective of this systematic review was to summarize the characteristics and effects of school-based interventions acting on different behavioral domains of adolescent health promotion. The review process was conducted by two independent reviewers who searched PubMed, Scopus, PsycINFO, and ERIC databases for experimental or observational studies with at least two measures of results published from 2007 to 2011, given that the research information available doubles every 5 years. Methodological quality was assessed with a standardized tool. Information was extracted from 35 studies aiming to prevent risk behaviors and promote healthy nutrition, physical activity, and mental and holistic health. Activities were based on theoretical models and were classified into interactive lessons, peer mediation, environmental changes, parents' and community activities, and tailored messages by computer-assisted training or other resources, usually including multiple components. In some cases, we identified some moderate to large, short- and long-term effects on behavioral and intermediate variable. This exhaustive review found that well-implemented interventions can promote adolescent health. These findings are consistent with recent reviews. Implications for practice, public health, and research are discussed. Copyright © 2014 SESPAS. Published by Elsevier Espana. All rights reserved.

  11. A school-based oral health educational program: the experience of Maringa- PR, Brazil.

    Science.gov (United States)

    Conrado, Carlos Alberto; Maciel, Sandra Mara; Oliveira, Márcia Regina

    2004-03-01

    The main purpose of this study was to evaluate the preliminary results of a school-based oral health educational strategy adopted in public primary schools from the city of Maringa, State of Parana, Brazil. The study sample was composed by 556 children and adolescents aged 6 to 17 years old, 124 schoolteachers and a group of 55 mothers. The educational approach was implemented for 18 months and consisted of reinforcements of interventions addressed to students and schoolteachers at school level and few activities targeted at the mothers, performed by means of home visits. Baseline and follow-up interviews focused on oral health care were undertaken for the entire study population. As a stimulus for the students to achieve proper oral hygiene habits, the simplified oral hygiene index was assessed at three different moments. A statistically significant improvement in their oral hygiene index (pstudied. They also point out the need of intensifying the preparation of schoolteachers in oral health topics, as well the instructions to the mothers for their oral health care. Moreover, they highlight the importance of the continuous implementation of school-based programs to promote the oral health.

  12. Visible Light-Induced Metal Free Surface Initiated Atom Transfer Radical Polymerization of Methyl Methacrylate on SBA-15

    Directory of Open Access Journals (Sweden)

    Liang Ma

    2017-02-01

    Full Text Available Surface-initiated atom transfer radical polymerization (SI-ATRP is one of the most versatile techniques to modify the surface properties of materials. Recent developed metal-free SI-ATRP makes such techniques more widely applicable. Herein photo-induced metal-free SI-ATRP of methacrylates, such as methyl methacrylate, N-isopropanyl acrylamide, and N,N-dimethylaminoethyl methacrylate, on the surface of SBA-15 was reported to fabricate organic-inorganic hybrid materials. A SBA-15-based polymeric composite with an adjustable graft ratio was obtained. The structure evolution during the SI-ATRP modification of SBA-15 was monitored and verified by FT-IR, XPS, TGA, BET, and TEM. The obtained polymeric composite showed enhanced adsorption ability for the model compound toluene in aqueous conditions. This procedure provides a low-cost, readily available, and easy modification method to synthesize polymeric composites without the contamination of metal.

  13. Highly active and durable Ca-doped Ce-SBA-15 catalyst for biodiesel production

    International Nuclear Information System (INIS)

    Thitsartarn, Warintorn; Maneerung, Thawatchai; Kawi, Sibudjing

    2015-01-01

    In this work, Ca-doped Ce-incorporated SBA-15 (Ca/CeS) catalyst was successfully synthesized by using direct synthesis of Ce-incorporated SBA-15 followed by impregnation of CaO (calcium oxide). The maximum Si/Ce molar ratio that Ce atoms can be incorporated successfully into the mesoporous framework was found to be 5 (CeS-5). After the impregnation of 30 wt. % Ca, the obtained 30Ca/CeS-5 catalysts showed the superior catalytic performance for transesterification reaction of palm oil with methanol and also the higher catalytic activity as compared to other supported catalysts, i.e. CaO/CeO 2 and CaO–CeO 2 /SBA-15. This can be attributed to the well-dispersion of CaO on the CeS-5 support surface. Furthermore, it was found that the leaching of Si, Ce and Ca from the catalyst into biodiesel produced was negligible (i.e. <1 ppm after 7 cycles), indicating the strong interaction between CaO and CeS-5 support. As a result, the 30Ca/CeS-5 catalyst can be reused at least 15 cycles with insignificant decrease in catalytic activity, offering the efficient CaO-based catalyst for biodiesel production. - Highlights: • Mesoporous Ca-based catalyst was successfully developed for biodiesel production. • Catalyst exhibited high activity towards transesterification (FAME yield > 98%). • Catalyst can be effectively re-used at least 15 cycles. • Extremely low catalyst contaminant (<1 ppm) was presented

  14. MIL-53(Fe), MIL-101, and SBA-15 porous materials: potential platforms for drug delivery.

    Science.gov (United States)

    Gordon, Jeff; Kazemian, Hossein; Rohani, Sohrab

    2015-02-01

    Conventional drug administration suffers from several drawbacks, including a lack of specificity for diseased tissue, the necessity of large and frequent doses, and adverse side effects. Great effort is currently being devoted to developing nanoparticle-based therapeutics capable of prolonging drug administration and providing better control. Here we demonstrate the use of flexible microporous MIL-53(Fe) and mesoporous MIL-101 and SBA-15 as matrices for the adsorption and in vitro drug delivery of acetaminophen, progesterone, and stavudine. A drug loading of 20 wt.% was achieved for each of the nanomaterials using an incipient wetness impregnation procedure. BET, DSC, and XRPD analyses indicated that the entire loaded amount of each of the model drugs had successfully been incorporated within the mesoporous channels of both MIL-101 and SBA-15. DSC analysis evidenced that a portion of each of the model drugs had deposited onto the outer surface of MIL-53(Fe) particles; however, the portion of each drug that had incorporated within the microporous channels was slowly delivered in a diffusion-controlled process, which occurred over a period of up to six days for acetaminophen. These results demonstrate the unique ability of MIL-53(Fe) to adapt its porosity and optimize drug-matrix interactions. Owing to its larger pore diameters and weaker host-guest interactions, MIL-101 release times were shorter, yet still prolonged, as evidenced by the complete release of stavudine after five days. Complete release of each of the drugs from SBA-15 occurred very quickly as a result of rapid drug dissolution and diffusion out of the mesopores. Copyright © 2014 Elsevier B.V. All rights reserved.

  15. The effectiveness of three sets of school-based instructional materials and community training on the acquisition and generalization of community laundry skills by students with severe handicaps.

    Science.gov (United States)

    Morrow, S A; Bates, P E

    1987-01-01

    This study examined the effectiveness of three sets of school-based instructional materials and community training on acquisition and generalization of a community laundry skill by nine students with severe handicaps. School-based instruction involved artificial materials (pictures), simulated materials (cardboard replica of a community washing machine), and natural materials (modified home model washing machine). Generalization assessments were conducted at two different community laundromats, on two machines represented fully by the school-based instructional materials and two machines not represented fully by these materials. After three phases of school-based instruction, the students were provided ten community training trials in one laundromat setting and a final assessment was conducted in both the trained and untrained community settings. A multiple probe design across students was used to evaluate the effectiveness of the three types of school instruction and community training. After systematic training, most of the students increased their laundry performance with all three sets of school-based materials; however, generalization of these acquired skills was limited in the two community settings. Direct training in one of the community settings resulted in more efficient acquisition of the laundry skills and enhanced generalization to the untrained laundromat setting for most of the students. Results of this study are discussed in regard to the issue of school versus community-based instruction and recommendations are made for future research in this area.

  16. Synthesis and characterization of nano structures of Silica SBA-16 containing Gadolinium-159 as potential nanoparticulated system for cancer therapy

    International Nuclear Information System (INIS)

    Oliveira, Andre Felipe de

    2013-01-01

    Cancer is a leading cause of death worldwide, and malignant neoplasms of the lung, stomach, liver, colon and breast in greater numbers. And recently observed in the literature a large number of reviews where new materials, especially nanoparticle, has been studied as drug carriers and radioisotopes applied to cancer treatment. How mesoporous materials based on silica, thanks to its huge surface area and biocompatibility, have been studied intensively providing broad applications in various areas, the use of nanostructured silica SBA-16 might be a carrier specific radioisotope accumulate in the cells malignant. Thus the aim of this study is to develop in vitro studies using SBA-16 can selectively concentrate in malignant cells therapeutic amounts of the radioisotope Gadolinium-159 escorting them to death. This work was performed orderly synthesis of mesoporous silica, SBA-16 and incorporating the complex Gd-DTPA-BMA, as well as chemical and structural characterization. The techniques used to analyze the occurrence of the incorporation of the gadolinium complex in the silica matrix were elemental analysis (CHN), atomic emission spectroscopy (ICP-AES), infrared spectroscopy (FTIR), nitrogen adsorption (BET), small-angle X-ray scattering (SAXS) and thermogravimetric analysis (TG). To analyze the morphology of pure silica used the scanning electron microscopy (SEM) and transmission electron microscopy (TEM). By photon correlation spectroscopy (PCS) it was possible to obtain a measure of mean particle size, the polydispersity index (PDI) of the silica SBA-16, and the zeta potential by laser Doppler anemometry (LDA). The results of incorporation analyzed by ICP-AES indicated that the material SBA-16 had a higher rate of incorporation of gadolinium (93%). The release kinetics in simulated body fluid, showed considerable stability and low release (1%). The mesoporous silica SBA-16 showed cell viability in direct contact with cell culture. Samples with gadolinium

  17. Photo-Catalytic Properties of TiO2 Supported on MWCNTs, SBA-15 and Silica-Coated MWCNTs Nanocomposites.

    Science.gov (United States)

    Ramoraswi, Nteseng O; Ndungu, Patrick G

    2015-12-01

    Mesoporous silica, specifically SBA-15, acid-treated multi-walled carbon nanotubes and a hybrid nanocomposite of SBA-15 coated onto the sidewalls acid-treated multi-walled carbon nanotubes (CNTs) were prepared and used as supports for anatase TiO2. Sol-gel methods were adapted for the synthesis of selected supports and for coating the materials with selected wt% loading of titania. Physical and chemical properties of the supports and catalyst composite materials were investigated by powder X-ray diffraction (XRD), Raman spectroscopy, thermogravimetric analysis, scanning electron microscope (SEM), high-resolution transmission electron microscope (HRTEM), UV-vis diffuse reflectance spectroscopy and fluorescence spectroscopy. The photo-activity of the catalyst composites were evaluated on the decolorisation of methylene blue as a model pollutant. Coating CNTs with SBA-15 improved the thermal stability and textural properties of the nanotubes. All supported titania composites had high surface areas (207-301 m(2)/g), altered band gap energies and reduced TiO2 crystallite sizes. The TiO2/SBA-CNT composite showed enhanced photo-catalytic properties and activity than the TiO2/SBA-15 and TiO2/CNT composites. In addition, an interesting observation was noted with the TiO2/SBA-15 nanocomposites, which had a significantly greater photo-catalytic activity than the TiO2/CNT nanocomposites in spite of the high electron-hole recombination phenomena observed with the photoluminescence results. Discussions in terms of morphological, textural and physical-chemical aspects to account for the result are presented.

  18. Preparation of Mesoporous SBA-16 Silica-Supported Biscinchona Alkaloid Ligand for the Asymmetric Dihydroxylation of Olefins

    Directory of Open Access Journals (Sweden)

    Shaheen M. Sarkar

    2014-01-01

    Full Text Available Optically active cinchona alkaloid was anchored onto mesoporous SBA-16 silica and the as-prepared complex was used as a heterogeneous chiral ligand of osmium tetraoxide for the asymmetric dihydroxylation of olefins. The prepared catalytic system provided 90–93% yield of vicinal diol with 92–99% enantioselectivity. The ordered mesoporous SBA-16 silica was found to be a valuable support for the cinchona alkaloid liganded osmium catalyst system which is frequently used in chemical industries and research laboratories for olefin functionalization.

  19. School-Based Sleep Education Programs for Short Sleep Duration in Adolescents: A Systematic Review and Meta-Analysis.

    Science.gov (United States)

    Chung, Ka-Fai; Chan, Man-Sum; Lam, Ying-Yin; Lai, Cindy Sin-Yee; Yeung, Wing-Fai

    2017-06-01

    Insufficient sleep among students is a major school health problem. School-based sleep education programs tailored to reach large number of students may be one of the solutions. A systematic review and meta-analysis was conducted to summarize the programs' effectiveness and current status. Electronic databases were searched up until May 2015. Randomized controlled trials of school-based sleep intervention among 10- to 19-year-old students with outcome on total sleep duration were included. Methodological quality of the studies was assessed using the Cochrane's risk of bias assessment. Seven studies were included, involving 1876 students receiving sleep education programs and 2483 attending classes-as-usual. Four weekly 50-minute sleep education classes were most commonly provided. Methodological quality was only moderate, with a high or an uncertain risk of bias in several domains. Compared to classes-as-usual, sleep education programs produced significantly longer weekday and weekend total sleep time and better mood among students at immediate post-treatment, but the improvements were not maintained at follow-up. Limited by the small number of studies and methodological limitations, the preliminary data showed that school-based sleep education programs produced short-term benefits. Future studies should explore integrating sleep education with delayed school start time or other more effective approaches. © 2017, American School Health Association.

  20. High impact of implementation on school-based smoking prevention

    DEFF Research Database (Denmark)

    Bast, Lotus Sofie; Due, Pernille; Bendtsen, Pernille

    2016-01-01

    prevention trial-the X:IT study. METHODS: A cluster-randomized trial testing is a multi-component intervention to prevent smoking among adolescents in 94 Danish elementary schools (51 intervention, 43 control schools). Participants were grade 7 pupils (mean age 12.5 years). Data was collected by electronic...... into account the complexity of the concept nor the intervention. The objective of the present study was to develop an overall quantitative measure of implementation fidelity, to examine the degree of implementation fidelity and the association of implementation and effect of a randomized school-based smoking...... questionnaires among pupils at baseline (n = 4161), the first follow-up (n = 3764), and the second follow-up (n = 3269) and among school coordinators at intervention schools at the first and second follow-up (50 and 39 coordinators). INTERVENTION: The intervention included three components: (1) smoke-free school...

  1. [Effectiveness of a school-based program to prevent obesity].

    Science.gov (United States)

    Pérez Solís, D; Díaz Martín, J J; Álvarez Caro, F; Suárez Tomás, I; Suárez Menéndez, E; Riaño Galán, I

    2015-07-01

    Intervention for childhood obesity is a public health priority. The purpose of this study was to evaluate the effectiveness of an elementary school-based intervention against obesity in children. Non-randomised controlled trial was conducted on children from first to fifth grade from two public schools of Avilés (Spain). The intervention lasted for 2 school years comprising healthy diet workshops, educational chats, educational meetings, informative written material, and promotion of physical activities. Primary outcome measure was body mass index z-score. Secondary outcomes included: obesity and overweight prevalence, waist circumference, dietary habits, and physical activity. A total of 382 (177 girls, 205 boys) out of 526 pupils of both schools were included in the study. Complete anthropometric data were obtained in 340 of the 382 individuals. Compared to children in control group, those in intervention group decreased body mass index z-score from 1.14 to 1.02 (P=.017), and improved KIDMED score from 7.33 to 7.71 points (P=.045). The percentage of students who carried on an optimal diet increased from 42.6% to 52.3% (P=.021). There were no statistical differences in the prevalence of obesity and overweight, or in waist circumference between the intervention and control groups. This school-based program resulted in modest beneficial changes in body mass index and diet quality. Copyright © 2014 Asociación Española de Pediatría. Published by Elsevier España, S.L.U. All rights reserved.

  2. School-based interventions for improving contraceptive use in adolescents.

    Science.gov (United States)

    Lopez, Laureen M; Bernholc, Alissa; Chen, Mario; Tolley, Elizabeth E

    2016-06-29

    Young women, especially adolescents, often lack access to modern contraception. Reasons vary by geography and regional politics and culture. The projected 2015 birth rate in 'developing' regions was 56 per 1000 compared with 17 per 1000 for 'developed' regions. To identify school-based interventions that improved contraceptive use among adolescents Until 6 June 2016, we searched for eligible trials in PubMed, CENTRAL, ERIC, Web of Science, POPLINE, ClinicalTrials.gov and ICTRP. We considered randomized controlled trials (RCTs) that assigned individuals or clusters. The majority of participants must have been 19 years old or younger.The educational strategy must have occurred primarily in a middle school or high school. The intervention had to emphasize one or more effective methods of contraception. Our primary outcomes were pregnancy and contraceptive use. We assessed titles and abstracts identified during the searches. One author extracted and entered the data into RevMan; a second author verified accuracy. We examined studies for methodological quality.For unadjusted dichotomous outcomes, we calculated the Mantel-Haenszel odds ratio (OR) with 95% confidence interval (CI). For cluster randomized trials, we used adjusted measures, e.g. OR, risk ratio, or difference in proportions. For continuous outcomes, we used the adjusted mean difference (MD) or other measures from the models. We did not conduct meta-analysis due to varied interventions and outcome measures. The 11 trials included 10 cluster RCTs and an individually randomized trial. The cluster RCTs had sample sizes from 816 to 10,954; the median number of clusters was 24. Most trials were conducted in the USA and UK; one was from Mexico and one from South Africa.We focus here on the trials with moderate quality evidence and an intervention effect. Three addressed preventing pregnancy and HIV/STI through interactive sessions. One trial provided a multifaceted two-year program. Immediately after year one and

  3. Size and spatial distribution of micropores in SBA-15 using CM-SANS

    International Nuclear Information System (INIS)

    Pollock, Rachel A.; Walsh, Brenna R.; Fry, Jason A.; Ghampson, Tyrone; Centikol, Ozgul; Melnichenko, Yuri B.; Kaiser, Helmut; Pynn, Roger; Frederick, Brian G.

    2011-01-01

    Diffraction intensity analysis of small-angle neutron scattering measurements of dry SBA-15 have been combined with nonlocal density functional theory (NLDFT) analysis of nitrogen desorption isotherms to characterize the micropore, secondary mesopore, and primary mesopore structure. The radial dependence of the scattering length density, which is sensitive to isolated surface hydroxyls, can only be modeled if the NLDFT pore size distribution is distributed relatively uniformly throughout the silica framework, not localized in a 'corona' around the primary mesopores. Contrast matching-small angle neutron scattering (CM-SANS) measurements, using water, decane, tributylamine, cyclohexane, and isooctane as direct probes of the size of micropores indicate that the smallest pores in SBA-15 have diameter between 5.7 and 6.2 (angstrom). Correlation of the minimum pore size with the onset of the micropore size distribution provides direct evidence that the shape of the smallest micropores is cylinderlike, which is consistent with their being due to unraveling of the polymer template.

  4. Modification of mesoporous silica SBA-15 with different organic molecules to gain chemical sensors: a review

    Directory of Open Access Journals (Sweden)

    Negar Lashgari

    2016-01-01

    Full Text Available The recognition of the biologically and environmentally important ions is of great interest in the field of chemical sensors in recent years. The fluorescent sensors as a powerful optical analytical technique for the detection of low level of various analytes such as anions and metal cations have been progressively developed due to the simplicity, cost effective, and selectivity for monitoring specific analytes in various systems. Organic-inorganic hybrid nanomaterials have important advantages as solid chemosensors and various innovative hybrid materials modified by fluorescence molecules were recently prepared. On the other hand, the homogeneous porosity and large surface area of mesoporous silica make it a promising inorganic support. SBA-15 as a two-dimensional hexagonal mesoporous silica material with stable structure, thick walls, tunable pore size, and high specific surface area is a valuable substrate for modification with different organic chelating groups. This review highlights the fluorescent chemosensors for ionic species based on modification of the mesoporous silica SBA-15 with different organic molecules, which have been recently developed from our laboratory.

  5. Template occluded SBA-15: An effective dissolution enhancer for poorly water-soluble drug

    Energy Technology Data Exchange (ETDEWEB)

    Fu Tingming, E-mail: futingming@gmail.com [College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029 (China); Guo Liwei; Le Kang; Wang Tianyao; Lu Jin [College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210029 (China)

    2010-09-15

    The aim of the present work was to improve the dissolution rate of piroxicam by inclusion into template occluded SBA-15. Our strategy involves directly introducing piroxicam into as-prepared SBA-15 occluded with P123 (EO{sub 20}PO{sub 70}EO{sub 20}) by self assembling method in acetonitrile/methylene chloride mixture solution. Ultraviolet spectrometry experiment and thermogravimetric analysis-differential scanning calorimetry (TG-DSC) profiles show that the piroxicam and P123 contents in the inclusion compound are 12 wt% and 28 wt%, respectively. X-ray powder diffraction and DSC analysis reveal that the included piroxicam is arranged in amorphous form. N{sub 2} adsorption-desorption experiment indicates that the piroxicam has been introduced to the mesopores instead of precipitating at the outside of the silica material. The inclusion compound was submitted to in vitro dissolution tests, the results show that the piroxicam dissolve from template occluded inclusion compound more rapidly, than these from the piroxicam crystalline and template removed samples in all tested conditions. Thus a facile method to improve the dissolution rate of poorly water-soluble drug was established, and this discovery opens a new avenue for the utilization of templates used for the synthesis of mesoporous materials.

  6. Template occluded SBA-15: An effective dissolution enhancer for poorly water-soluble drug

    International Nuclear Information System (INIS)

    Fu Tingming; Guo Liwei; Le Kang; Wang Tianyao; Lu Jin

    2010-01-01

    The aim of the present work was to improve the dissolution rate of piroxicam by inclusion into template occluded SBA-15. Our strategy involves directly introducing piroxicam into as-prepared SBA-15 occluded with P123 (EO 20 PO 70 EO 20 ) by self assembling method in acetonitrile/methylene chloride mixture solution. Ultraviolet spectrometry experiment and thermogravimetric analysis-differential scanning calorimetry (TG-DSC) profiles show that the piroxicam and P123 contents in the inclusion compound are 12 wt% and 28 wt%, respectively. X-ray powder diffraction and DSC analysis reveal that the included piroxicam is arranged in amorphous form. N 2 adsorption-desorption experiment indicates that the piroxicam has been introduced to the mesopores instead of precipitating at the outside of the silica material. The inclusion compound was submitted to in vitro dissolution tests, the results show that the piroxicam dissolve from template occluded inclusion compound more rapidly, than these from the piroxicam crystalline and template removed samples in all tested conditions. Thus a facile method to improve the dissolution rate of poorly water-soluble drug was established, and this discovery opens a new avenue for the utilization of templates used for the synthesis of mesoporous materials.

  7. School-Based Gay-Affirmative Interventions: First Amendment and Ethical Concerns

    Science.gov (United States)

    Bayer, Ronald

    2013-01-01

    Public health professionals and educators have developed effective school-based interventions to reduce prejudice and stigma against lesbian, gay, bisexual, and transgender (LGBT) students. Such interventions can reduce the harm caused to sexual minority youths by stigma and can improve health outcomes. However, critics have warned that these interventions attempt to control speech and religious beliefs protected by the First Amendment. We review this critique and assess the legal and ethical arguments. We conclude that, both legally and ethically, there is great leeway for schools to implement LGBT-affirmative interventions. Still, we recommend that interventionists attend critics’ concerns using principles of community-based participatory research (CBPR). Using CBPR approaches, interventionists can achieve better community acceptance and cooperation and more successful interventions. PMID:23948002

  8. School-based Telerehabilitation In Occupational Therapy: Using Telerehabilitation Technologies to Promote Improvements in Student Performance

    Directory of Open Access Journals (Sweden)

    Melanie Joy Criss

    2013-06-01

    Full Text Available This article discusses the use of telerehabilitation technologies in occupational therapy for school-based practice. Telerehabilitation, for the purpose of this program, included the implementation of occupational therapy services via two-way interactive videoconferencing technology. The subjects included in this pilot program were children, ages 6 to 11 years, who attended an online charter school and had difficulties in the areas of fine motor and/or visual motor skills which impacted success with handwriting. Each participant completed a virtual evaluation and six 30-minute intervention sessions. The Print Tool™ Assessment was used to determine progress pre- and post-program. A learning coach/student satisfaction survey was given at the end of the program to determine participant satisfaction. Outcomes revealed improvements in handwriting performance for most students who participated in the program and high satisfaction rates reported by all participants.

  9. Current Training and Continuing Education Needs of Preschool and School-Based Speech-Language Pathologists regarding Children with Cleft Lip/Palate

    Science.gov (United States)

    Bedwinek, Anne P.; Kummer, Ann W.; Rice, Gale B.; Grames, Lynn Marty

    2010-01-01

    Purpose: The purpose of this study was to obtain information regarding the education and experience of preschool and school-based speech-language pathologists (SLPs) regarding the assessment and treatment of children born with cleft lip and/or palate and to determine their continuing education needs in this area. Method: A 16-item mixed-methods…

  10. An Examination of Cross-Cultural Curriculum Development and Student Cross-Cultural Competencies in a School-Based Consultation Course

    Science.gov (United States)

    Arra, Christopher T.

    2010-01-01

    The goal of this case study was to describe the cross-cultural consultation experiences of school psychology graduate students as they progressed through a semester-long school-based consultation course. Graduate students enrolled in a consultation course completed both quantitative and qualitative assessment measures. The course instructor used…

  11. School-Based Intervention for Nutrition Promotion in Mi Yun County, Beijing, China: Does a Health-Promoting School Approach Improve Parents' Knowledge, Attitudes and Behaviour?

    Science.gov (United States)

    Wang, Dongxu; Stewart, Donald; Chang, Chun

    2016-01-01

    Purpose: The purpose of this paper is to assess whether the school-based nutrition programme using the health-promoting school (HPS) framework was effective to improve parents' knowledge, attitudes and behaviour (KAB) in relation to nutrition in rural Mi Yun County, Beijing. Design/methodology/approach: A cluster-randomised intervention trial…

  12. Effect of the Dutch school-based education programme ‘Taste Lessons’ on behavioural determinants of taste acceptance and healthy eating: a quasi-experimental study

    NARCIS (Netherlands)

    Battjes-Fries, M.C.E.; Haveman-Nies, A.; Renes, R.J.; Meester, H.J.; Veer, van 't P.

    2015-01-01

    Objective To assess the effect of the Dutch school-based education programme ‘Taste Lessons’ on children’s behavioural determinants towards tasting unfamiliar foods and eating healthy and a variety of foods. Design In a quasi-experimental study design, data on behavioural determinants were collected

  13. Feasibility of Providing Sexually Transmitted Infection Testing and Treatment in Off-Campus, Nonclinic Settings for Adolescents Enrolled in a School-Based Research Project

    Science.gov (United States)

    Chacko, Mariam R.; Markham, Christine; Thiel, Melanie; Crandall, Stacy M.; Peskin, Melissa F.; Shegog, Ross; Tortolero, Susan

    2014-01-01

    Background: This study examined the acceptability and feasibility of using a biological outcome measure to evaluate a school-based sexuality education program. Confidential field-delivered sexually transmitted infection (STI) testing by nonmedical field staff and STI treatment by medically trained field staff was assessed in off-campus and…

  14. 78 FR 21180 - Announcement of the 2013 SBA-Visa Export Video Contest Under the America COMPETES Reauthorization...

    Science.gov (United States)

    2013-04-09

    ... submitted per business. Videos must not contain violence, profanity, sex, images of a prurient nature, or... SMALL BUSINESS ADMINISTRATION Announcement of the 2013 SBA-Visa Export Video Contest Under the... the ``Cosponsors'') announce a video contest for eligible small businesses to showcase the advantages...

  15. 13 CFR 120.425 - What are the minimum elements that SBA will require before consenting to a securitization?

    Science.gov (United States)

    2010-01-01

    ... the accuracy of the data used to make the Currency Rate calculation. [64 FR 6508, Feb. 10, 1999, as... compliance with this section if it meets the definition of “well capitalized” used by its bank regulator. SBA... used to make the Loss Rate calculation. (c) PLP Privilege Suspension. (1) Suspension: If a securitizer...

  16. 13 CFR 124.503 - How does SBA accept a procurement for award through the 8(a) BD program?

    Science.gov (United States)

    2010-01-01

    ... under the 8(a) BD program. (g) Basic Ordering Agreements (BOAs). A Basic Ordering Agreement (BOA) is not a contract under the FAR. See 48 CFR 16.703(a). Each order to be issued under the BOA is an... BOA in addition to offering and accepting the BOA itself. (1) SBA will not accept for award on a sole...

  17. 13 CFR 124.602 - What kind of annual financial statement must a Participant submit to SBA?

    Science.gov (United States)

    2010-01-01

    ... statements prepared by a licensed independent public accountant within 90 days after the close of the concern... independent public accountant, verified as to accuracy by an authorized officer, partner, limited liability... must submit to SBA audited annual financial statements prepared by a licensed independent public...

  18. Metathesis of 2-pentene over Mo and W supported mesoporous molecular sieves MCM-41 and SBA-15

    Czech Academy of Sciences Publication Activity Database

    Ibrahim, M. A.; Akhtar, M. N.; Čejka, Jiří; Montanari, E.; Balcar, Hynek; Kubů, Martin; Al-Khattaf, S. S.

    2017-01-01

    Roč. 53, SEP 2017 (2017), s. 119-126 ISSN 1226-086X R&D Projects: GA ČR(CZ) GAP106/12/0189 Institutional support: RVO:61388955 Keywords : metathesis * MCM-41 * SBA-15 Subject RIV: CF - Physical ; Theoretical Chemistry OBOR OECD: Physical chemistry Impact factor: 4.421, year: 2016

  19. 2 CFR 2700.930 - Debarring official (SBA supplement to government-wide definition at 2 CFR 180.930).

    Science.gov (United States)

    2010-01-01

    ... government-wide definition at 2 CFR 180.930). 2700.930 Section 2700.930 Grants and Agreements Federal Agency Regulations for Grants and Agreements SMALL BUSINESS ADMINISTRATION NONPROCUREMENT DEBARMENT AND SUSPENSION Definitions § 2700.930 Debarring official (SBA supplement to government-wide definition at 2 CFR 180.930). For...

  20. 2 CFR 2700.1010 - Suspending official (SBA supplement to government-wide definition at 2 CFR 180.1010).

    Science.gov (United States)

    2010-01-01

    ... government-wide definition at 2 CFR 180.1010). 2700.1010 Section 2700.1010 Grants and Agreements Federal Agency Regulations for Grants and Agreements SMALL BUSINESS ADMINISTRATION NONPROCUREMENT DEBARMENT AND SUSPENSION Definitions § 2700.1010 Suspending official (SBA supplement to government-wide definition at 2 CFR...

  1. 2 CFR 2700.995 - Principal (SBA supplement to government-wide definition at 2 CFR 180.995).

    Science.gov (United States)

    2010-01-01

    ... definition at 2 CFR 180.995). 2700.995 Section 2700.995 Grants and Agreements Federal Agency Regulations for Grants and Agreements SMALL BUSINESS ADMINISTRATION NONPROCUREMENT DEBARMENT AND SUSPENSION Definitions § 2700.995 Principal (SBA supplement to government-wide definition at 2 CFR 180.995). Principal means— (a...

  2. 13 CFR 126.308 - What happens if SBA inadvertently omits a qualified HUBZone SBC from the List?

    Science.gov (United States)

    2010-01-01

    ... writing at U.S. Small Business Administration, 409 Third Street, SW., Washington, DC 20416 or via e-mail... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What happens if SBA inadvertently omits a qualified HUBZone SBC from the List? 126.308 Section 126.308 Business Credit and Assistance...

  3. Catalytic Synthesis of n-Butyl Oleate by Cerium Complex Doped Y/SBA-15 Composite Molecular Sieve

    Science.gov (United States)

    Shi, Chunwei; Bian, Xue; Wu, Yongfu; Cong, Yufeng; Pei, Mingyuan

    2018-01-01

    Cerium ion was successfully incorporated into Y/SBA-15 micro-mesoporous molecular sieves via the hydrothermal synthesis method to give a series of composite materials. The prepared materials were thoroughly characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray fluorescence spectroscopy (XRF), scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS) and differential thermo gravimetric analysis (TG-DTG). The results showed that the prepared composite materials retained the highly ordered mesoporous two-dimensional hexagonal structure of SBA-15 and the octagonal structure of Y. The catalyst Ce-Y/SBA-15 was prepared and characterized, then the esterification of n-butanol and oleic acid was studied with bismuth phosphotungstate as a catalyst. Using this model reaction, the effects of Ce-HY/SBA-15, molar ratio of alcohol to oleic acid, amount of catalysts, reaction time and reaction temperature were investigated. The experimental results show that the optimal reaction conditions were: 1.8:1 molar ratio of alcohol to acid, 5 % catalyst amount (based on weight of oleic acid), 4 h reaction time and reflux conditions. Under these conditions, the yield of esterification was 90.6 %. The results suggest that the addition of Ce can effectively improve the catalytic properties of composite molecular sieves.

  4. 13 CFR 107.1640 - SBA access to records of the CRA, Brokers, Dealers and Pool or Trust assemblers.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false SBA access to records of the CRA, Brokers, Dealers and Pool or Trust assemblers. 107.1640 Section 107.1640 Business Credit and Assistance... records of the CRA, Brokers, Dealers and Pool or Trust assemblers. The CRA and any broker, dealer and Pool...

  5. Direct hydrothermal synthesis of iron-containing mesoporous silica SBA-15 : potential as a support for gold nanoparticles

    NARCIS (Netherlands)

    Li, Y.; Guan, Y.; Santen, van R.A.; Kooyman, P.J.; Dugulan, A.I.; Li, C.; Hensen, E.J.M.

    2009-01-01

    The preparation of mesoporous silica SBA-15 with high iron loadings (14-90 wt % Fe2O3) as a suitable support for gold nanoparticles to be used in CO oxidation catalysis has been investigated. The support materials were prepared by a direct hydrothermal two-step pH adjusting method which consisted of

  6. 13 CFR 107.1810 - Events of default and SBA's remedies for Licensee's noncompliance with terms of Debentures.

    Science.gov (United States)

    2010-01-01

    ... Noncompliance With Terms of Leverage § 107.1810 Events of default and SBA's remedies for Licensee's... and remedies in this section, as in effect at the time of issuance and as if fully set forth in the Debentures. Debentures issued before April 25, 1994 continue to be governed by the remedies in effect at the...

  7. 13 CFR 108.1810 - Events of default and SBA's remedies for NMVC Company's noncompliance with terms of Debentures.

    Science.gov (United States)

    2010-01-01

    ... Company's Noncompliance With Terms of Leverage § 108.1810 Events of default and SBA's remedies for NMVC..., you automatically agree to the terms, conditions and remedies in this section, as in effect at the... section to take effect immediately. (1) Insolvency. You become equitably or legally insolvent. (2...

  8. 13 CFR 114.111 - Does the attorney-client privilege apply when SBA employees are represented by the Government?

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Does the attorney-client privilege... Does the attorney-client privilege apply when SBA employees are represented by the Government? When... representational assistance for such an employee, those attorneys undertake a full and traditional attorney-client...

  9. 13 CFR 120.545 - What are SBA's policies concerning the liquidation of collateral and the sale of business loans...

    Science.gov (United States)

    2010-01-01

    ... the liquidation of collateral and the sale of business loans and physical disaster assistance loans... policies concerning the liquidation of collateral and the sale of business loans and physical disaster.... SBA or the Lender may liquidate collateral securing a loan if the loan is in default or there is no...

  10. CO2 activation through silylimido and silylamido zirconium hydrides supported on N-donor chelating SBA15 surface ligand

    KAUST Repository

    Pasha, Fahran Ahmad; Bendjeriou-Sedjerari, Anissa; Abou-Hamad, Edy; Huang, Kuo-Wei; Basset, Jean-Marie

    2016-01-01

    Density functional theory calculations and 2D 1H-13C HETCOR solid state NMR spectroscopy prove that CO2 can probe, by its own reactivity, different types of N-donor surface ligands on SBA15-supported ZrIV hydrides: [(≡Si-O-)(≡Si-N=)[Zr]H] and [(≡Si

  11. Elementary School-Based Influenza Vaccination: Evaluating Impact on Respiratory Illness Absenteeism and Laboratory-Confirmed Influenza

    Science.gov (United States)

    Kjos, Sonia A.; Irving, Stephanie A.; Meece, Jennifer K.; Belongia, Edward A.

    2013-01-01

    Background Studies of influenza vaccine effectiveness in schools have assessed all-cause absenteeism rather than laboratory-confirmed influenza. We conducted an observational pilot study to identify absences due to respiratory illness and laboratory-confirmed influenza in schools with and without school-based vaccination. Methods A local public health agency initiated school-based influenza vaccination in two Wisconsin elementary schools during October 2010 (exposed schools); two nearby schools served as a comparison group (non-exposed schools). Absences due to fever or cough illness were monitored for 12 weeks. During the 4 weeks of peak influenza activity, parents of absent children with fever/cough illness were contacted and offered influenza testing. Results Parental consent for sharing absenteeism data was obtained for 937 (57%) of 1,640 students. Fifty-two percent and 28%, respectively, of all students in exposed and non-exposed schools were vaccinated. Absences due to fever or cough illness were significantly lower in the exposed schools during seven of 12 surveillance weeks. Twenty-seven percent of students at exposed schools and 39% at unexposed schools had one or more days of absence due to fever/cough illness (pabsenteeism due to fever or cough illness, but not absenteeism for other reasons. Although nonspecific, absence due to fever or cough illness may be a useful surrogate endpoint in school-based studies if identification of laboratory confirmed influenza is not feasible. PMID:23991071

  12. Storied experiences of school-based habitat restoration

    Science.gov (United States)

    Bell, Anne C.

    The purpose of this study has been to consider the eco-pedagogical promise of school-based habitat restoration. How does the practice of restoration foster a lived sense of being in a more-than-human world1 while inviting alternative approaches to teaching and learning? What opportunities does it offer to resist the societal forces and patterns, reinforced through the school system, which are eroding and effacing human relationships with other life? A literature review sets the broader context for an in-depth exploration of the experiences and understandings of participants (students, teachers, parents) involved in a case study. I proceeded with my research on the assumption that both the discursive and non-discursive dimensions of habitat restoration were key to appreciating its eco-pedagogical potential. Through participant observation over a ten month period, interviewing and a survey, I listened to some of the ways that habitat restoration challenged the typically disembodied, decontextualized organization of schooling by privileging hands-on involvement and encouraging attentive, caring relationships within the human and natural communities of which students were a part. I investigated particular storylines and metaphors which encoded and supported participants' endeavours, especially with regard to their potential to disrupt human-centered values and beliefs. This study suggests that the promise of habitat restoration lies in the openings created to attune to and interact with human and nonhuman others in fully embodied, locally situated and personally meaningful ways. Participants overwhelmingly attested to the importance of the experience of restoration which many deemed to be memorable and motivating and to provide fertile ground for future engagements in/for nature and society. As participants attended to the nuances and complexities of their interactions with a specific place and its inhabitants, their intimate involvement added a depth of feeling and

  13. A Cost Analysis of School-Based Lifestyle Interventions.

    Science.gov (United States)

    Oosterhoff, Marije; Bosma, Hans; van Schayck, Onno C P; Joore, Manuela A

    2018-05-31

    A uniform approach for costing school-based lifestyle interventions is currently lacking. The objective of this study was to develop a template for costing primary school-based lifestyle interventions and apply this to the costing of the "Healthy Primary School of the Future" (HPSF) and the "Physical Activity School" (PAS), which aim to improve physical activity and dietary behaviors. Cost-effectiveness studies were reviewed to identify the cost items. Societal costs were reflected by summing up the education, household and leisure, labor and social security, and health perspectives. Cost inputs for HPSF and PAS were obtained for the first year after implementation. In a scenario analysis, the costs were explored for a hypothetical steady state. From a societal perspective, the per child costs were €2.7/$3.3 (HPSF) and €- 0.3/$- 0.4 (PAS) per day during the first year after implementation, and €1.0/$1.2 and €- 1.3/$- 1.6 in a steady state, respectively (2016 prices). The highest costs were incurred by the education perspective (first year: €8.7/$10.6 (HPSF) and €4.0/$4.9 (PAS); steady state: €6.1/$7.4 (HPSF) and €2.1/$2.6 (PAS)), whereas most of the cost offsets were received by the household and leisure perspective (first year: €- 6.0/$- 7.3 (HPSF) and €- 4.4/$- 5.4 (PAS); steady state: €- 5.0/$- 6.1 (HPSF) and €- 3.4/$- 4.1 (PAS)). The template proved helpful for costing HPSF and PAS from various stakeholder perspectives. The costs for the education sector were fully (PAS) and almost fully (HPSF) compensated by the savings within the household sector. Whether the additional costs of HPSF over PAS represent value for money will depend on their relative effectiveness.

  14. School-Based Obesity-Prevention Policies and Practices and Weight-Control Behaviors among Adolescents.

    Science.gov (United States)

    Larson, Nicole; Davey, Cynthia S; Caspi, Caitlin E; Kubik, Martha Y; Nanney, Marilyn S

    2017-02-01

    The promotion of healthy eating and physical activity within school settings is an important component of population-based strategies to prevent obesity; however, adolescents may be vulnerable to weight-related messages, as rapid development during this life stage often leads to preoccupation with body size and shape. This study examines secular trends in secondary school curricula topics relevant to the prevention of unhealthy weight-control behaviors; describes cross-sectional associations between weight-related curricula content and students' use of weight-control behaviors; and assesses whether implementation of school-based obesity-prevention policies/practices is longitudinally related to students' weight-control behaviors. The Minnesota School Health Profiles and Minnesota Student Survey (grades 9 and 12) data were used along with National Center for Education Statistics data to examine secular trends, cross-sectional associations (n=141 schools), and longitudinal associations (n=42 schools). Students self-reported their height and weight along with past-year use of healthy (eg, exercise), unhealthy (eg, fasting), and extreme (eg, use laxatives) weight-control behaviors. Descriptive statistics, generalized estimating equations, and generalized linear regression models accounting for school-level demographics. There was no observable pattern during the years 2008 to 2014 in the mean number of curricula topics addressing unhealthy weight-control behaviors, despite an increase in the prevalence of curricula addressing acceptance of body-size differences. Including three vs fewer weight-control topics and specifically including the topic of eating disorders in the curricula was related to a lower school-level percent of students using any extreme weight-control behaviors. In contrast, an overall measure of implementing school-based obesity-prevention policies/practices (eg, prohibited advertising) was unrelated to use of unhealthy or extreme behaviors

  15. Youth Voice in Nigerian School-based Management Committees

    Directory of Open Access Journals (Sweden)

    Bashiru Bako Umar

    2017-01-01

    Full Text Available In Nigeria, School-Based Management Committees (SBMCs aim to provide an opportunity for all stakeholders, particularly the vulnerable groups in the school’s host communities such as young people and women to partake in school governance. Research on the experiences of youth voice in the committees is scant, however, as much of the existing literature on SBMCs focuses on program outcomes. Using qualitative research interviews, observations, and document analysis, this study addressed this gap by exploring how youth participate and express themselves in two SBMCs in Niger State, Nigeria. The findings, which were derived from 19 youth and adult participants, were drawn from SBMC members out of which 12 were youth between the ages 13 and 25, while 7 were adults aged 40 and above. The participants revealed that youth committee members expressed their voice in the committees through participating in a number of committee activities. Specifically, the youth participated in decision-making during meetings, aided in the construction of committee projects, undertook administrative/managerial functions and monitored the committee’s projects. They also participated in revenue generation, planning, school visits and supervision, advocacy, and sensitization campaigns.

  16. Evaluating the Sustainability of School-Based Health Centers.

    Science.gov (United States)

    Navarro, Stephanie; Zirkle, Dorothy L; Barr, Donald A

    2017-01-01

    The United States is facing a surge in the number of school-based health centers (SBHCs) owing to their success in delivering positive health outcomes and increasing access to care. To preserve this success, experts have developed frameworks for creating sustainable SBHCs; however, little research has affirmed or added to these models. This research seeks to analyze elements of sustainability in a case study of three SBHCs in San Diego, California, with the purpose of creating a research-based framework of SBHC sustainability to supplement expertly derived models. Using a mixed methods study design, data were collected from interviews with SBHC stakeholders, observations in SBHCs, and SBHC budgets. A grounded theory qualitative analysis and a quantitative budget analysis were completed to develop a theoretical framework for the sustainability of SBHCs. Forty-one interviews were conducted, 6 hours of observations were completed, and 3 years of SBHC budgets were analyzed to identify care coordination, community buy-in, community awareness, and SBHC partner cooperation as key themes of sustainability promoting patient retention for sustainable billing and reimbursement levels. These findings highlight the unique ways in which SBHCs gain community buy-in and awareness by becoming trusted sources of comprehensive and coordinated care within communities and among vulnerable populations. Findings also support ideas from expert models of SBHC sustainability calling for well-defined and executed community partnerships and quality coordinated care in the procurement of sustainable SBHC funding.

  17. Principles that underpin effective school-based drug education.

    Science.gov (United States)

    Midford, Richard; Munro, Geoffrey; McBride, Nyanda; Snow, Pamela; Ladzinski, Ursula

    2002-01-01

    This study identifies the conceptual underpinnings of effective school-based drug education practice in light of contemporary research evidence and the practical experience of a broad range of drug education stakeholders. The research involved a review of the literature, a national survey of 210 Australian teachers and others involved in drug education, and structured interviews with 22 key Australian drug education policy stakeholders. The findings from this research have been distilled and presented as a list of 16 principles that underpin effective drug education. In broad terms, drug education should be evidence-based, developmentally appropriate, sequential, and contextual. Programs should be initiated before drug use commences. Strategies should be linked to goals and should incorporate harm minimization. Teaching should be interactive and use peer leaders. The role of the classroom teacher is central. Certain program content is important, as is social and resistance skills training. Community values, the social context of use, and the nature of drug harm have to be addressed. Coverage needs to be adequate and supported by follow-up. It is envisaged that these principles will provide all those involved in the drug education field with a set of up-to-date, research-based guidelines against which to reference decisions on program design, selection, implementation, and evaluation.

  18. Parental perceptions of school-based influenza immunisation in Ontario, Canada: a qualitative study

    Science.gov (United States)

    MacDougall, Donna; Crowe, Lois; Pereira, Jennifer A; Kwong, Jeffrey C; Quach, Susan; Wormsbecker, Anne E; Ramsay, Hilary; Salvadori, Marina I; Russell, Margaret L

    2014-01-01

    Objective To understand the perspectives of Ontario parents regarding the advantages and disadvantages of adding influenza immunisation to the currently existing Ontario school-based immunisation programmes. Design Descriptive qualitative study. Participants Parents of school-age children in Ontario, Canada, who were recruited using a variety of electronic strategies (social media, emails and media releases), and identified as eligible (Ontario resident, parent of one or more school-age children, able to read/write English) on the basis of a screening questionnaire. We used stratified purposeful sampling to obtain maximum variation in two groups: parents who had ever immunised at least one child against influenza or who had never done so. We conducted focus groups (teleconference or internet forum) and individual interviews to collect data. Thematic analysis was used to analyse the data. Setting Ontario, Canada. Results Of the 55 participants, 16 took part in four teleconference focus groups, 35 in 6 internet forum focus groups and four in individual interviews conducted between October 2012 and February 2013. Participants who stated that a school-based influenza immunisation programme would be worthwhile for their child valued its convenience and its potential to reduce influenza transmission without interfering with the family routine. However, most thought that for a programme to be acceptable, it would need to be well designed and voluntary, with adequate parental control and transparent communication between the key stakeholder groups of public health, schools and parents. Conclusions These results will benefit decision-makers in the public health and education sectors as they consider the advantages and disadvantages of immunising children in schools as part of a system-wide influenza prevention approach. Further research is needed to assess the perceptions of school board and public health stakeholders. PMID:24902736

  19. An ecological and theoretical deconstruction of a school-based obesity prevention program in Mexico.

    Science.gov (United States)

    Safdie, Margarita; Cargo, Margaret; Richard, Lucie; Lévesque, Lucie

    2014-08-10

    Ecological intervention programs are recommended to prevent overweight and obesity in children. The National Institute of Public Health (INSP) in Mexico implemented a successful ecological intervention program to promote healthy lifestyle behaviors in school age children. This study assessed the integration of ecological principles and Social Cognitive Theory (SCT) constructs in this effective school-based obesity prevention program implemented in 15 elementary schools in Mexico City. Two coders applied the Intervention Analysis Procedure (IAP) to "map" the program's integration of ecological principles. A checklist gauged the use of SCT theory in program activities. Thirty-two distinct intervention strategies were implemented in one setting (i.e., school) to engage four different target-groups (students, parents, school representatives, government) across two domains (Nutrition and Physical Activity). Overall, 47.5% of the strategies targeted the school infrastructure and/or personnel; 37.5% of strategies targeted a key political actor, the Public Education Secretariat while fewer strategies targeted parents (12.5%) and children (3%). More strategies were implemented in the Nutrition domain (69%) than Physical Activity (31%). The most frequently used SCT construct within both intervention domains was Reciprocal Determinism (e.g., where changes to the environment influence changes in behavior and these behavioral changes influence further changes to the environment); no significant differences were observed in the use of SCT constructs across domains. Findings provide insight into a promising combination of strategies and theoretical constructs that can be used to implement a school-based obesity prevention program. Strategies emphasized school-level infrastructure/personnel change and strong political engagement and were most commonly underpinned by Reciprocal Determinism for both Nutrition and Physical Activity.

  20. Community-level moderators of a school-based childhood sexual assault prevention program.

    Science.gov (United States)

    Morris, Matthew C; Kouros, Chrystyna D; Janecek, Kim; Freeman, Rachel; Mielock, Alyssa; Garber, Judy

    2017-01-01

    Childhood sexual abuse (CSA) is highly prevalent and associated with a wide variety of negative mental and physical health outcomes. School-based CSA education and prevention programs have shown promise, but it is unclear to what extent community-level characteristics are related to their effectiveness. The present cluster randomized controlled trial evaluated community-level moderators of the Safe@Lastprogramcomparedtoawaitlistcontrolcondition.(*) Knowledge gains from pre- to post-intervention were assessed in 5 domains: safe versus unsafe people; safe choices; problem-solving; clear disclosure; and assertiveness. Participants were 1177 students (46% White, 26% African American, 15% Hispanic, 4% Asian American, 6% Other) in grades 1 through 6 from 14 public schools in Tennessee. Multilevel models accounting for the nesting of children within schools revealed large effect sizes for the intervention versus control across all knowledge domains (d's ranged from 1.56 to 2.13). The effectiveness of the program was moderated by mean per capita income and rates of substantiated cases of child abuse and neglect in the community. Intervention effects were stronger for youth living in lower as compared to higher income counties, and for youth attending schools in counties with lower as compared to higher abuse/neglect rates. Child characteristics (sex, race) did not moderate intervention effects. This research identified two community-level factors that predicted the effectiveness of a CSA education and prevention program designed to improve children's knowledge of personal safety skills. School-based CSA prevention programs may require modification for communities with higher rates of child abuse and neglect. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. Systematic review of school-based interventions to prevent smoking for girls

    NARCIS (Netherlands)

    Kleijn, M.J.J. de; Farmer, M.M.; Booth, M.; Motala, A.; Smith, A.; Sherman, S.; Assendelft, W.J.J.; Shekelle, P.

    2015-01-01

    BACKGROUND: The purpose of this review is to study the effect of school-based interventions on smoking prevention for girls. METHODS: We performed a systematic review of articles published since 1992 on school-based tobacco-control interventions in controlled trials for smoking prevention among

  2. Investigating Stakeholder Attitudes and Opinions on School-Based Human Papillomavirus Vaccination Programs

    Science.gov (United States)

    Nodulman, Jessica A.; Starling, Randall; Kong, Alberta S.; Buller, David B.; Wheeler, Cosette M.; Woodall, W. Gill

    2015-01-01

    Background: In several countries worldwide, school-based human papillomavirus (HPV) vaccination programs have been successful; however, little research has explored US stakeholders' acceptance toward school-based HPV vaccination programs. Methods: A total of 13 focus groups and 12 key informant interviews (N?=?117; 85% females; 66% racial/ethnic…

  3. Utilization of Mental Health Services in School-Based Health Centers

    Science.gov (United States)

    Bains, Ranbir M.; Cusson, Regina; White-Frese, Jesse; Walsh, Stephen

    2017-01-01

    Background: We summarize utilization patterns for mental health services in school-based health centers. Methods: Administrative data on school-based health center visits in New Haven, Connecticut were examined for the 2007-2009 school years. Relative frequencies of mental health visits by age were calculated as a percentage of all visits and were…

  4. Provider Perspectives on School-Based Mental Health for Urban Minority Youth: Access and Services

    Science.gov (United States)

    Gamble, Brandon E.; Lambros, Katina M.

    2014-01-01

    This article provides results from a qualitative study on the efforts of school-based mental health providers (SBMHPs) who serve students in urban, suburban, and ethnically diverse settings to help families access quality mental health services. School-based mental health plays a key role in the provision of direct and indirect intervention…

  5. The Role of Sexual Orientation in School-Based Victimization: A Meta-Analysis

    Science.gov (United States)

    Toomey, Russell B.; Russell, Stephen T.

    2016-01-01

    School-based victimization is associated with poorer developmental, academic, and health outcomes. This meta-analytic review compared the mean levels of school-based victimization experienced by sexual minority youth to those of heterosexual youth, and examined moderators of this difference. Results from 18 independent studies (N = 56,752…

  6. School-Based Primary School Sexuality Education for Migrant Children in Beijing, China

    Science.gov (United States)

    Liu, Wenli; Su, Yufen

    2014-01-01

    In May 2007, Beijing Normal University launched a programme of school-based sexuality education for migrant children in Xingzhi Primary School in Beijing. Over the past seven years, the project team has developed a school-based sexuality education curriculum using the "International Technical Guidance on Sexuality Education" published by…

  7. Adolescent Health Care in School-Based Health Centers. Position Statement

    Science.gov (United States)

    National Assembly on School-Based Health Care, 2008

    2008-01-01

    School-based health centers (SBHCs) are considered one of the most effective strategies for delivering preventive care, including reproductive and mental health care services, to adolescents--a population long considered difficult to reach. National Assembly on School-Based Health Care (NASBHC) recommends practices and policies to assure…

  8. Constructing the Ideal Muslim Sexual Subject: Problematics of School-Based Sex Education in Iran

    Science.gov (United States)

    Tabatabaie, Alireza

    2015-01-01

    School-based sex education is an underdeveloped and challenging issue to address in Iran. This paper provides insights into the main challenges in developing and implementing school-based sex education in Iran. Through an investigation of one Iranian boys' school that, in contrast to the majority of Iranian educational institutions, has an…

  9. Combining Internal and External Evaluation: A Case for School-Based Evaluation.

    Science.gov (United States)

    Nevo, David

    1994-01-01

    School-based evaluation, the focus of this article, is conceived of as neither a synonym for internal evaluation nor an antonym for external evaluation, but as a combination that is examined through a review of recent research. A school-based evaluation in Israel illustrates combining these approaches in a complementary way. (SLD)

  10. Integrating School-Based and Therapeutic Conflict Management Models at School.

    Science.gov (United States)

    D'Oosterlinck, Franky; Broekaert, Eric

    2003-01-01

    Explores the possibility of integrating school-based and therapeutic conflict management models, comparing two management models: a school-based conflict management program, "Teaching Students To Be Peacemakers"; and a therapeutic conflict management program, "Life Space Crisis Intervention." The paper concludes that integration might be possible…

  11. Maternal Management of Social Relationships as a Correlate of Children's School-Based Experiences

    Science.gov (United States)

    Fletcher, Anne C.; Walls, Jill K.; Eanes, Angella Y.; Troutman, David R.

    2010-01-01

    We tested a model considering the manner in which mothers' use of their own social relationships and efforts to facilitate their children's school-based social relationships were associated with two distinct types of school-based competence: academic achievement and levels of stress experienced within the school environment. Fourth grade children…

  12. Temperature dependence of positron lifetime in ordered porous silica (SBA-3)

    International Nuclear Information System (INIS)

    Kunishige, S.; Koshimizu, M.; Asai, K.

    2009-01-01

    The temperature dependence of positron lifetime in uniform mesopores was analyzed. We used SBA-3 as the sample material, which possesses an ordered porous structure with uniform cylindrical mesopores. The positron lifetime corresponding to the annihilation in the mesopores increased gradually with a decrease in temperature down to 100 K, and its relative intensity also increased concomitantly. This result was attributed to the lower probability of the escape of the ortho-positronium (o-Ps) from the mesopores into the intergrain space at lower temperatures. An anomalous and sudden increase in the lifetime was observed at around 100 K; this result was in agreement with an increase in the positron lifetime reported in a previous study. It was revealed that the increase in the lifetime is very steep in cases of uniform mesopores, suggesting that the temperature dependence is influenced by the pore size.

  13. Determination of Thallium(I by Hybrid Mesoporous Silica (SBA-15 Modified Electrode

    Directory of Open Access Journals (Sweden)

    Geeta Rani

    2016-01-01

    Full Text Available Chemically modified mesoporous silica material (SBA-15 was used for the construction of Tl(I selective carbon paste electrode. The best response was found with the electrode containing 10% modifier as electrode material. The electrode has a lower detection limit of 6.0 × 10−9 M in a working concentration range of 1.0 × 10−8–1.0 × 10−1 M. The selectivity coefficient calculated by match potential method (MPM shows the high selectivity of electrode towards Tl(I over other tested ions. The electrode was successfully applied as an indicator electrode for the titration of 0.01 M TlNO3 solution with standards EDTA solution and for sequential titration of mixture of different anions.

  14. Insights into the Hydrothermal Stability of Triamine-Functionalized SBA-15 Silica for CO2 Adsorption.

    Science.gov (United States)

    Jahandar Lashaki, Masoud; Ziaei-Azad, Hessam; Sayari, Abdelhamid

    2017-10-23

    The hydrothermal stability of triamine-grafted, large-pore SBA-15 CO 2 adsorbents was studied by using steam stripping. Following two 3 h cycles of steam regeneration, lower CO 2 uptakes, lower CO 2 /N ratios, and slower adsorption kinetics were observed relative to fresh samples, particularly at the lowest adsorption temperature (25 °C). CO 2 adsorption measurements for a selected sample exposed to 48 h of steam stripping depicted that after the initial loss during the first exposure to steam (3-6 h), the adsorptive properties stabilized. For higher adsorption temperatures (i.e., 50 and 75 °C), however, all adsorptive properties remained almost unchanged after steaming, indicating the significance of diffusional limitations. Thermogravimetric analysis and FTIR spectroscopy on grafted samples before and after steam stripping showed no amine leaching and no change in the chemical nature of the amine groups, respectively. Also, a six-cycle CO 2 adsorption/desorption experiment under dry conditions showed no thermal degradation. However, N 2 adsorption measurement at 77 K showed significant reductions in the BET surface area of the grafted samples following steaming. Based on the pore size distribution of calcined, grafted samples before and after steaming, it is proposed that exposure to steam restructured the grafted materials, causing mass transfer resistance. It is inferred that triamine-grafted, large-pore SBA-15 adsorbents are potential candidates for CO 2 capture at relatively high temperatures (50-75 °C; for example, flue gas) combined with steam regeneration. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. Adolescent Student Use of School-Based Salad Bars.

    Science.gov (United States)

    Andersen, Lori; Myers, Leann; O'Malley, Keelia; Mundorf, Adrienne R; Harris, Diane M; Johnson, Carolyn C

    2015-10-01

    Childhood obesity continues to be a public health problem in the United States. Increasing consumption of fruits and vegetables (F/V) is one strategy for decreasing high consumption of energy-dense, high-fat foods, thereby improving weight status. Many Orleans Parish public schools were provided with salad bars (SBs) to augment school lunch with increased access to F/V. This study identified factors associated with student use of SBs. Surveys examining SB use, demographics, food preference, nutrition knowledge, and social support were administered to students in the 7th to 12th grades (N = 702) in Orleans Parish (New Orleans, Louisiana). Generalized estimating equations, which incorporate clustering at the school level, helped to determine associations between independent variables and SB use. Sixty percent of participants were SB users. Non-African-American students were more likely to be SB users than African-American students (odds ratio [OR] = 2.35, confidence interval [CI]: 1.35-4.07) and students who had high preference for healthy food were more likely to use the SB than those who had low preference (OR = 2.41, CI: 1.44-4.01). Students who encouraged others to consume F/V were more likely to use the SB than those who did not (p = .015). Individual and interpersonal factors related to SB use can provide guidance in the development of school-based interventions to increase SB use and F/V consumption. © 2015, American School Health Association.

  16. Promoting physical activity and improving dietary quality of Singaporean adolescents: effectiveness of a school-based fitness and wellness program.

    Science.gov (United States)

    Loong, Claudine; Leo, Latasha; Goh, Danielle; Lim, Pei Sin; Loke, Wai Mun

    2018-01-13

    Limited data are available on the effectiveness of the school-based structured fitness and wellness program to influence dietary quality and physical activity levels in Singaporean adolescents. The study examined if a 20-h (over 10 weeks) school-based structured fitness and wellness module affects the diet quality indices, energy intakes, physical activity levels and the associated energy expenditures in a group of healthy, male adolescents with low diet quality and physical activity levels. Participant demography, anthropometry, dietary intake and daily physical activity were obtained at the beginning, mid-point and end of the 10-week program. Physical activity levels were assessed accelerometrically over a 1-weekday period. Dietary intake were taken using a structured 7-day food diary, and diet quality assessed using the Diet Quality Index-International (DQI-I). The 31 enrolled participants (age 19.8 ± 0.6 years) with body mass index (BMI) (19.8 ± 0.6 kg/m2) followed diets of low diet quality scores (48.3 ± 9.6 out of 100) and engaged in 3.87 ± 2.00 h of physical activity daily before the start of the intervention. Their dietary quality and physical activity levels did not change significantly throughout the intervention period. They scored poorly in the moderation and overall balance components of the diet quality assessment. The physical activity duration correlated inversely to the diet quality scores. Our results suggest that the prescribed school-based fitness and wellness module was ineffective in influencing the diet quality and physical activity levels of Singaporean male adolescents with low diet quality and physical activity levels.

  17. The Impact of a School-Based Hygiene, Water Quality and Sanitation Intervention on Soil-Transmitted Helminth Reinfection: A Cluster-Randomized Trial

    Science.gov (United States)

    Freeman, Matthew C.; Clasen, Thomas; Brooker, Simon J.; Akoko, Daniel O.; Rheingans, Richard

    2013-01-01

    We conducted a cluster-randomized trial to assess the impact of a school-based water treatment, hygiene, and sanitation program on reducing infection with soil-transmitted helminths (STHs) after school-based deworming. We assessed infection with STHs at baseline and then at two follow-up rounds 8 and 10 months after deworming. Forty government primary schools in Nyanza Province, Kenya were randomly selected and assigned to intervention or control arms. The intervention reduced reinfection prevalence (odds ratio [OR] 0.56, 95% confidence interval [CI] 0.31–1.00) and egg count (rate ratio [RR] 0.34, CI 0.15–0.75) of Ascaris lumbricoides. We found no evidence of significant intervention effects on the overall prevalence and intensity of Trichuris trichiura, hookworm, or Schistosoma mansoni reinfection. Provision of school-based sanitation, water quality, and hygiene improvements may reduce reinfection of STHs after school-based deworming, but the magnitude of the effects may be sex- and helminth species-specific. PMID:24019429

  18. Mechanism for enhanced degradation of clofibric acid in aqueous by catalytic ozonation over MnO{sub x}/SBA-15

    Energy Technology Data Exchange (ETDEWEB)

    Sun, Qiangqiang; Wang, Yu [School of Chemistry & Environment, South China Normal University, Guangzhou 510006 (China); Li, Laisheng, E-mail: llsh@scnu.edu.cn [School of Chemistry & Environment, South China Normal University, Guangzhou 510006 (China); Bing, Jishuai [Key Laboratory of Aquatic Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 (China); Wang, Yingxin; Yan, Huihua [School of Chemistry & Environment, South China Normal University, Guangzhou 510006 (China)

    2015-04-09

    Highlights: • Clofibric acid (CA) is efficiently mineralized by O{sub 3}/MnO{sub x}/SBA-15. • Adsorption of CA and its intermediates on MnO{sub x}/SBA-15 is proved unimportant. • Initiation of hydroxyl radicals (·OH) is enhanced in O{sub 3}/MnO{sub x}/SBA-15. • Uniformly distributed MnO{sub x} accounts for the high activity of MnO{sub x}/SBA-15. • Degradation routes of CA in ozonation alone and catalytic ozonation are proposed. - Abstract: Comparative experiments were conducted to investigate the catalytic ability of MnO{sub x}/SBA-15 for the ozonation of clofibric acid (CA) and its reaction mechanism. Compared with ozonation alone, the degradation of CA was barely enhanced, while the removal of TOC was significantly improved by catalytic ozonation (O{sub 3}/MnO{sub x}/SBA-15). Adsorption of CA and its intermediates by MnO{sub x}/SBA-15 was proved unimportant in O{sub 3}/MnO{sub x}/SBA-15 due to the insignificant adsorption of CA and little TOC variation after ceasing ozone in stopped-flow experiment. The more remarkably inhibition effect of sodium bisulfite (NaHSO{sub 3}) on the removal of TOC in catalytic ozonation than in ozonation alone elucidated that MnO{sub x}/SBA-15 facilitated the generation of hydroxyl radicals (·OH), which was further verified by electron spin-resonance spectroscopy (ESR). Highly dispersed MnO{sub x} on SBA-15 were believed to be the main active component in MnO{sub x}/SBA-15. Some intermediates were indentified and different degradation routes of CA were proposed in both ozonation alone and catalytic ozonation. The amounts of small molecular carboxylic acids (i.e., formic acid (FA), acetic acid (AA) and oxalic acid (OA)) generated in catalytic ozonation were lower than in ozonation alone, resulting from the generation of more ·OH.

  19. Comparative Study of Molecular Basket Sorbents Consisting of Polyallylamine and Polyethylenimine Functionalized SBA-15 for CO2 Capture from Flue Gas.

    Science.gov (United States)

    Wang, Dongxiang; Wang, Xiaoxing; Song, Chunshan

    2017-11-17

    Polyallylamine (PAA)-based molecular basket sorbents (MBS) have been studied for CO 2 capture in comparison with polyethylenimine (PEI)-based MBS. The characterizations including N 2 physisorption, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), and thermogravimetric analysis (TGA) showed that PAA (M n =15 000) is more rigid and has more steric hindrance inside SBA-15 pores than PEI owing mainly to its different polymer structure. The effects of temperature and PAA loading on the CO 2 sorption capacity of PAA-based MBS have been examined by TGA by using 100 % CO 2 gas stream and compared with PEI/SBA-15. It was found that the capacity of the PAA/SBA-15 sorbent increased with increasing temperature. The optimum capacity of 88 mg CO2  g sorb -1 was obtained at 140 °C for PAA(50)/SBA-15 whereas the optimum sorption temperature was 75 and 90 °C for PEI-I(50)/SBA-15 (PEI-I, M n =423) and PEI-II(50)/SBA-15 (PEI-II, M n =25 000), respectively. The capacity initially increased with the increase of PAA loading and then dropped at high amine contents, owing to the increased diffusion barrier. The highest CO 2 capacity of 109 mg CO2  g sorb -1 was obtained at a PAA loading of 65 wt %, whereas the PAA(50)/SBA-15 sorbent gave the best amine efficiency of 0.23 mol CO2  mol N -1 . The effect of moisture was examined in a fixed-bed flow system with simulated flue gas containing 15 % CO 2 and 4.5 % O 2 in N 2 . It was found that the presence of moisture significantly enhanced CO 2 sorption over PAA(50)/SBA-15 and greatly improved its cyclic stability and regenerability. Compared with PEI/SBA-15, PAA/SBA-15 possesses a better thermal stability and higher resistance to oxidative degradation. However, the CO 2 sorption rate over the PAA(50)/SBA-15 sorbent was much slower. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  20. Application of sulfonic acid functionalized nanoporous silica (SBA-Pr-SO3H in the green one-pot synthesis of triazoloquinazolinones and benzimidazoquinazolinones

    Directory of Open Access Journals (Sweden)

    Ghodsi Mohammadi Ziarani

    2015-01-01

    Full Text Available Sulfonic acid functionalized SBA-15 (SBA-Pr-SO3H with a pore size of 6 nm was proven to be an efficient heterogeneous nanoporous solid acid catalyst in the green one-pot synthesis of triazoloquinazolinones and benzimidazoquinazolinones from the reaction of aromatic aldehydes with 3-amino-1,2,4-triazole (or 2-aminobenzimidazole and dimedone under solvent free conditions.

  1. Effectiveness of school-based smoking prevention curricula: systematic review and meta-analysis.

    Science.gov (United States)

    Thomas, Roger E; McLellan, Julie; Perera, Rafael

    2015-03-10

    To assess effectiveness of school-based smoking prevention curricula keeping children never-smokers. Systematic review, meta-analysis. MEDLINE (1966+), EMBASE (1974+), Cinahl, PsycINFO (1967+), ERIC (1982+), Cochrane CENTRAL, Health Star, Dissertation Abstracts, conference proceedings. pooled analyses, fixed-effects models, adjusted ORs. Risk of bias assessed with Cochrane Risk of Bias tool. 50 randomised controlled trials (RCTs) of school-based smoking curricula. Never-smokers age 5-18 (n=143,495); follow-up ≥6 months; all countries; no date/language limitations. Information, social influences, social competence, combined social influences/competence and multimodal curricula. Remaining a never-smoker at follow-up. Pooling all curricula, trials with follow-up ≤1 year showed no statistically significant differences compared with controls (OR 0.91 (0.82 to 1.01)), though trials of combined social competence/social influences curricula had a significant effect on smoking prevention (7 trials, OR 0.59 (95% CI 0.41 to 0.85)). Pooling all trials with longest follow-up showed an overall significant effect in favour of the interventions (OR 0.88 (0.82 to 0.95)), as did the social competence (OR 0.65 (0.43 to 0.96)) and combined social competence/social influences curricula (OR 0.60 (0.43 to 0.83)). No effect for information, social influences or multimodal curricula. Principal findings were not sensitive to inclusion of booster sessions in curricula or to whether they were peer-led or adult-led. Differentiation into tobacco-only or multifocal curricula had a similar effect on the primary findings. Few trials assessed outcomes by gender: there were significant effects for females at both follow-up periods, but not for males. RCTs of baseline never-smokers at longest follow-up found an overall significant effect with average 12% reduction in starting smoking compared with controls, but no effect for all trials pooled at ≤1 year. However, combined social

  2. Production of Ethylene through Ethanol Dehydration on SBA-15 Catalysts Synthesized by Sol-gel and One-step Hydrothermal Methods.

    Science.gov (United States)

    Autthanit, Chaowat; Jongsomjit, Bunjerd

    2018-02-01

    The present work deals with the catalytic performance of SBA-15 supported catalysts in the gas phase catalytic dehydration of ethanol in the temperature range of 200 to 400°C. The SBA-15 support was incorporated on a zirconium (Zr) and bimetal of zirconium and lanthanum (Zr-La) prepared by sol-gel (SG) and hydrothermal (HT) methods. The catalysts were characterized by means of N 2 physisorption, SEM/EDX, and NH 3 -TPD. The experimental results demonstrated that the Zr-La/SBA-15-HT exhibited the highest catalytic activity. Ethanol conversion and ethylene selectivity were found to increase with increased reaction temperature. The best catalytic results were achieved for Zr-La/SBA-15-HT indicating values of ethanol conversion and ethylene yield of ca. 84% and 80%, respectively at 400°C. The most important parameter influencing their catalytic properties appears to be the interaction between metal and support depending on different methods. The metal dispersion inside the siliceous matrix of SBA-15 has a direct influence on their surface acidity. Meanwhile, the performance of these SBA-15 supported catalysts in ethanol dehydration is also related with the alteration of surface acidity caused by the introduction of Zr and Zr-La.

  3. Psychometric characteristics of process evaluation measures for a rural school-based childhood obesity prevention study: Louisiana Health.

    Science.gov (United States)

    Newton, Robert L; Thomson, Jessica L; Rau, Kristi K; Ragusa, Shelly A; Sample, Alicia D; Singleton, Nakisha N; Anton, Stephen D; Webber, Larry S; Williamson, Donald A

    2011-01-01

    To evaluate the implementation of intervention components of the Louisiana Health study, which was a multicomponent childhood obesity prevention program conducted in rural schools. Content analysis. Process evaluation assessed implementation in classrooms, gym classes, and cafeterias. Classroom teachers (n  =  232), physical education teachers (n  =  53), food service managers (n  =  33), and trained observers (n  =  9). Five process evaluation measures were created: Physical Education Questionnaire (PEQ), Intervention Questionnaire (IQ), Food Service Manager Questionnaire (FSMQ), Classroom Observation (CO), and School Nutrition Environment Observation (SNEO). Interrater reliability and internal consistency were assessed on all measures. Analysis of variance and χ(2) were used to compare differences across study groups on questionnaires and observations. The PEQ and one subscale from the FSMQ were eliminated because their reliability coefficients fell below acceptable standards. The subscale internal consistencies for the IQ, FSMQ, CO, and SNEO (all Cronbach α > .60) were acceptable. After the initial 4 months of intervention, there was evidence that the Louisiana Health intervention was being implemented as it was designed. In summary, four process evaluation measures were found to be sufficiently reliable and valid for assessing the delivery of various aspects of a school-based obesity prevention program. These process measures could be modified to evaluate the delivery of other similar school-based interventions.

  4. Iron-functionalized nanoporous silica type SBA-15: Synthesis, characterization and application in alkene epoxidation in presence of hydrogen peroxide

    Directory of Open Access Journals (Sweden)

    Mahdieh Ghazizadeh

    2017-05-01

    Full Text Available Fe(IIIsalophen complex on a SBA-15 support functionalized with (3-aminopropyltriethoxysilane as a linker. It has been synthesized and characterized by XRD, adsorption–desorption of nitrogen, SEM, FT-IR and UV–Vis. The formation of metal-salophen complex with the amino groups as connectors to the SBA-15 surface was confirmed. This material was successfully used as a heterogeneous catalyst for the epoxidation of alkenes and the effects of reaction time, different solvents and amount of catalyst on catalytic activity were investigated. This catalyst gave suitable and comparable yield and percentage conversion values. It is also stable and can be recycled and reused in the epoxidation of alkenes.

  5. School-based education programmes for the prevention of unintentional injuries in children and young people.

    Science.gov (United States)

    Orton, Elizabeth; Whitehead, Jessica; Mhizha-Murira, Jacqueline; Clarkson, Mandy; Watson, Michael C; Mulvaney, Caroline A; Staniforth, Joy Ul; Bhuchar, Munish; Kendrick, Denise

    2016-12-27

    Unintentional injuries are the leading cause of death in children aged four to 18 years and are a major cause of ill health. The school setting offers the opportunity to deliver preventive interventions to a large number of children and has been used to address a range of public health problems. However, the effectiveness of the school setting for the prevention of different injury mechanisms in school-aged children is not well understood. To assess the effects of school-based educational programmes for the prevention of injuries in children and evaluate their impact on improving children's safety skills, behaviour and practices, and knowledge, and assess their cost-effectiveness. We ran the most recent searches up to 16 September 2016 for the following electronic databases: Cochrane Injuries Group Specialised Register; Cochrane Central Register of Controlled Trials; Ovid MEDLINE(R), Ovid MEDLINE(R) In-Process & Other Non-Indexed Citations; Ovid MEDLINE(R) Daily and Ovid OLDMEDLINE(R); Embase and Embase Classic (Ovid); ISI Web of Science: Science Citation Index Expanded; ISI Web of Science Conference Proceedings Citation Index-Science; ISI Web of Science: Social Sciences Citation Index; ISI Web of Science: Conference Proceedings Citation Index - Social Sciences & Humanities; and the 14 October 2016 for the following electronic databases: Health Economics Evaluations Database (HEED); Health Technology Assessment Database (HTA); CINAHL Plus (EBSCO); ZETOC; LILACS; PsycINFO; ERIC; Dissertation Abstracts Online; IBSS; BEI; ASSIA; CSA Sociological Abstracts; Injury Prevention Web; SafetyLit; EconLit (US); PAIS; UK Clinical Research Network Study Portfolio; Open Grey; Index to Theses in the UK and Ireland; Bibliomap and TRoPHI. We included randomised controlled trials (RCTs), non-randomised controlled trials (non-RCTs), and controlled before-and-after (CBA) studies that evaluated school-based educational programmes aimed at preventing a range of injury mechanisms. The

  6. School-based interventions for preventing Hiv, sexually transmitted infections, and pregnancy in adolescents

    Science.gov (United States)

    Mason-Jones, Amanda J; Sinclair, David; Mathews, Catherine; Kagee, Ashraf; Hillman, Alex; Lombard, Carl

    2016-01-01

    Background School-based sexual and reproductive health programmes are widely accepted as an approach to reducing high-risk sexual behaviour among adolescents. Many studies and systematic reviews have concentrated on measuring effects on knowledge or self-reported behaviour rather than biological outcomes, such as pregnancy or prevalence of sexually transmitted infections (STIs). Objectives To evaluate the effects of school-based sexual and reproductive health programmes on sexually transmitted infections (such as HIV, herpes simplex virus, and syphilis), and pregnancy among adolescents. Search methods We searched MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials (CENTRAL) for published peer-reviewed journal articles; and ClinicalTrials.gov and the World Health Organization's (WHO) International Clinical Trials Registry Platform for prospective trials; AIDS Educaton and Global Information System (AEGIS) and National Library of Medicine (NLM) gateway for conference presentations; and the Centers for Disease Control and Prevention (CDC), UNAIDS, the WHO and the National Health Service (NHS) centre for Reviews and Dissemination (CRD) websites from 1990 to 7 April 2016. We handsearched the reference lists of all relevant papers. Selection criteria We included randomized controlled trials (RCTs), both individually randomized and cluster-randomized, that evaluated school-based programmes aimed at improving the sexual and reproductive health of adolescents. Data collection and analysis Two review authors independently assessed trials for inclusion, evaluated risk of bias, and extracted data. When appropriate, we obtained summary measures of treatment effect through a random-effects meta-analysis and we reported them using risk ratios (RR) with 95% confidence intervals (CIs). We assessed the certainty of the evidence using the GRADE approach. Main results We included eight cluster-RCTs that enrolled 55,157 participants. Five trials were conducted in

  7. Self-immobilization of acidogenic mixed consortia on mesoporous material (SBA-15) and activated carbon to enhance fermentative hydrogen production

    Energy Technology Data Exchange (ETDEWEB)

    Mohan, S. Venkata; Mohanakrishna, G.; Sarma, P.N. [Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad 500607 (India); Reddy, S. Sreevardhan; Raju, B. David; Rao, K.S. Rama [Catalysis and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500607 (India)

    2008-11-15

    The influence of self-immobilization of enriched acidogenic mixed consortia on fermentative hydrogen (H{sub 2}) production was studied on different supporting materials [SBA-15 (mesoporous) and activated carbon (granular; GAC and powder; PAC)] using chemical wastewater as substrate. Batch fermentation experiments were performed with same substrate at different organic loading rates (OLRs) under acidophilic microenvironment (pH 5.5) and room temperature (28 {+-} 2 C). Experimental data evidenced the effectiveness of attached growth on both the H{sub 2} yields and substrate degradation efficiency, particularly at higher loading rates. Among the three materials evaluated, immobilization on SBA-15 material showed comparatively effective performance in enhancing both H{sub 2} yield and substrate degradation. Suspended growth (SG-control) culture showed inhibition in terms of both H{sub 2} production and substrate degradation especially at applied higher loading rates. Immobilization on SBA-15 resulted in nine times higher H{sub 2} production (7.29 mol/kg COD{sub R}-day at OLR of 0.83 kg COD/m{sup 3}-day) than the lowest yield observed (suspended growth at OLR of 2.55 kg COD/m{sup 3}-day). Maximum substrate degradation rate (SDR) of 0.96 kg COD/m{sup 3}-day (OLR 2.55 kg COD/m{sup 3}-day) was also observed with SBA-15 immobilization, which is 1.62 times higher than the lowest substrate degradation observed with SG-control experiments with the same OLR. Attached growth on GAC and PAC also showed remarkable improvement in the process performance at higher OLRs compared to SG-control. (author)

  8. A well-defined mesoporous amine silica surface via a selective treatment of SBA-15 with ammonia

    KAUST Repository

    Bendjeriou-Sedjerari, Anissa; Pelletier, Jeremie; Abou-Hamad, Edy; Emsley, Lyndon; Basset, Jean-Marie

    2012-01-01

    2D double-quantum 1H- 1H NMR unambiguously shows that the "isolated" Si-OH surface silanols of dehydroxylated SBA-15 are converted upon treatment with ammonia into single silylamine surface site Si-NH 2. The "gem" di-silanols (Si(OH) 2) remain intact. Treatment using HMDS produces (Si(OSiMe 3) 2) but leaves Si-NH 2 untouched. The resulting surface is hydrophobic and stable. © The Royal Society of Chemistry 2012.

  9. 45 CFR 2516.600 - How are funds for school-based service-learning programs distributed?

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false How are funds for school-based service-learning... (Continued) CORPORATION FOR NATIONAL AND COMMUNITY SERVICE SCHOOL-BASED SERVICE-LEARNING PROGRAMS Distribution of Funds § 2516.600 How are funds for school-based service-learning programs distributed? (a) Of...

  10. A Content Analysis of Kindergarten-12th Grade School-Based Nutrition Interventions: Taking Advantage of Past Learning

    Science.gov (United States)

    Roseman, Mary G.; Riddell, Martha C.; Haynes, Jessica N.

    2011-01-01

    Objective: To review the literature, identifying proposed recommendations for school-based nutrition interventions, and evaluate kindergarten through 12th grade school-based nutrition interventions conducted from 2000-2008. Design: Proposed recommendations from school-based intervention reviews were developed and used in conducting a content…

  11. Study of DDT and its derivatives DDD, DDE adsorption and degradation over Fe-SBA-15 at low temperature

    Institute of Scientific and Technical Information of China (English)

    Hailin Wang; Hua Tian; Zhengping Hao

    2012-01-01

    Mesoporous SBA-15 with different Fe2O3 loading were synthesized by an in-situ coating progress for removals of dichlorodiphenyltrichloroethane(DDT)and its derivatives,i.e.,1,1-dichloro-2,2-bis-(p-chlorophenyl)ethane(DDD)and 1,l-dichloro-2,2-bis-(4-chloro -phenyl)ethane(DDE).The results from XRD(X-ray diffractometer),TEM(transmission electron microscopy)indicated that the iron could be well dispersed on SBA-15 within 6 wt.% Fe2O3 loading.Nitrogen adsorption-desorption tests indicated that the synthesized materials were characterized by ordered meso-structure,high surface area and large pore volume.DDTs were removed from aqueous media in 12-hr treatment and high removal efficiency of DDTs was achieved at over 94%.DDTs could be completely degraded at 350℃ under the existence of SBA-15 with 4 wt.% Fe2O3 loading.The final degradation products of DDT were dichlorobenzophenone (DCB)and bis-(4-chloro-phenyl)methane(DDM),suggesting a complete dechlorination from trichloromethyl.

  12. Ascorbyl Tetraisopalmitate Inclusion into Υ-Cyclodextrin and Mesoporous SBA-15: Preparation, Characterization and In Vitro Release Study

    Directory of Open Access Journals (Sweden)

    Maria Bastianini

    2017-07-01

    Full Text Available Ascorbic acid or vitamin C is a strong antioxidant widely used in cosmetic and food fields. This vitamin is very unstable and rapidly undergoes degradation. In order to solve this problem and to obtain a stable ascorbic acid, Nikkol Group has developed ascorbyltetraisopalmitate (VC-IP. This raw material is an oil phase, already well-known and employed in the cosmetic market. The objective of this study is to obtain VC-IP in micro-powder form, in order to produce a new raw material that is easily dispersible in oil and water phases and useful for make-up and color cosmetic applications. Various types of drug carriers were studied and considered in order to support VC-IP and obtain the conversion in powder. Υ-cyclodextrin and mesoporous silica SBA-15 were chosen as the best candidates. A white powder of supported VC-IP was obtained with each carrier (VC-IP@cyclodextrin, VC-IP@SBA-15. The systems underwent physicochemical characterization and in vitro release tests were carried out. Based on the conducted study, it can be concluded that by supporting VC-IP on Υ-cyclodextrin and SBA-15, it is feasible to obtain a new raw material in powder form. The two carriers possess different release profiles, adding the possibility to finely tune the release of the active component in smart formulations.

  13. In-situ infrared study of CO{sub 2} adsorption on SBA-15 grafted with {gamma}-(aminopropyl)triethoxysilane

    Energy Technology Data Exchange (ETDEWEB)

    Alex C.C. Chang; Steven S.C. Chuang; McMahan Gray; Yee Soong [University of Akron, Akron, OH (United States). Chemical Engineering Department

    2003-04-01

    CO{sub 2} adsorption/desorption on SBA-15 grafted with {gamma}-(aminopropyl)triethoxysilane (APTS) has been studied by infrared spectroscopy coupled with temperature-programmed desorption. SBA-15, a mesoporous silica material with a uniform pore size of 21 nm and a surface area of 200-230 m{sup 2}/g, provides an OH functional group for grafting of {gamma}-(aminopropyl)triethoxysilane. The amine-grafted SBA-15 adsorbed CO{sub 2} as carbonates and bicarbonates with a total capacity of 200-400 {mu}mol/g. The heat of CO{sub 2} desorption was determined to be 3.2-4.5 kJ/mol in the presence of H{sub 2}O and 6.6-11.0 kJ/mol in the absence of H{sub 2}O during temperature-programmed desorption. Repeated CO{sub 2} adsorption/desorption CO{sub 2} cycles shifted the desorption peak temperature downward and decreased the heat of CO{sub 2} adsorption. 22 refs., 9 figs., 3 tabs.

  14. The slice balance approach (SBA): a characteristic-based, multiple balance SN approach on unstructured polyhedral meshes

    International Nuclear Information System (INIS)

    Grove, R.E.

    2005-01-01

    The Slice Balance Approach (SBA) is an approach for solving geometrically-complex, neutral-particle transport problems within a multi-group discrete ordinates (S N ) framework. The salient feature is an angle-dependent spatial decomposition. We approximate general surfaces with arbitrary polygonal faces and mesh the geometry with arbitrarily-shaped polyhedral cells. A cell-local spatial decomposition divides cells into angle-dependent slices for each S N direction. This subdivision follows from a characteristic-based view of the transport problem. Most balance-based characteristic methods use it implicitly; we use it explicitly and exploit its properties. Our mathematical approach is a multiple balance approach using exact spatial moments balance equations on cells and slices along with auxiliary relations on slices. We call this the slice balance approach; it is a characteristic-based multiple balance approach. The SBA is intentionally general and can extend differencing schemes to arbitrary 2-D and 3-D meshes. This work contributes to development of general-geometry deterministic transport capability to complement Monte Carlo capability for large, geometrically-complex transport problems. The purpose of this paper is to describe the SBA. We describe the spatial decomposition and mathematical framework and highlight a few interesting properties. We sketch the derivation of two solution schemes, a step characteristic scheme and a diamond-difference-like scheme, to illustrate the approach and we present interesting results for a 2-D problem. (author)

  15. Highly selective epoxidation of styrene over mesoporous Au-Ti-SBA-15 via photocatalysis process: Synthesis, characterization, and catalytic application

    Energy Technology Data Exchange (ETDEWEB)

    Guo Yajie; Liu Zhengwang [School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); Wang Guangjian, E-mail: wgj2260@chnu.edu.cn [School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China); Huang Yanhog; Kang Fangfang [School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China)

    2011-11-15

    Highly ordered Au-Ti-SBA-15 mesoporous molecular sieves were successfully synthesized by one-pot hydrothermal synthesis in acid medium, and were characterized by XRD, UV-vis, SEM, element-mapping, HRTEM, N{sub 2} adsorption, XPS, {sup 29}Si MAS NMR, NH{sub 3}-TPD and FT-IR. The as-prepared Au-Ti-SBA-15 samples were possessed of highly ordered mesostructures with larger pore diameter, pore volume and uniform mesopore size distribution. In the oxidation of styrene with H{sub 2}O{sub 2} as the oxidant over Au-Ti-SBA-15 catalyst under photo-irradiation, reaction parameters, such as molar ratio of H{sub 2}O{sub 2} to styrene, reaction time, solvent, the amount of catalyst, catalyst species, and the amount of 3% NaOH, were conditioned at length. As a result, highly selective epoxidation of styrene over catalyst was carried out perfectly for 10 min with high TOF of 4.75 Multiplication-Sign 10{sup 3} min{sup -1}.

  16. School-based education programmes for the prevention of child sexual abuse.

    Science.gov (United States)

    Walsh, Kerryann; Zwi, Karen; Woolfenden, Susan; Shlonsky, Aron

    2015-04-16

    Child sexual abuse is a significant global problem in both magnitude and sequelae. The most widely used primary prevention strategy has been the provision of school-based education programmes. Although programmes have been taught in schools since the 1980s, their effectiveness requires ongoing scrutiny. To systematically assess evidence of the effectiveness of school-based education programmes for the prevention of child sexual abuse. Specifically, to assess whether: programmes are effective in improving students' protective behaviours and knowledge about sexual abuse prevention; behaviours and skills are retained over time; and participation results in disclosures of sexual abuse, produces harms, or both. In September 2014, we searched CENTRAL, Ovid MEDLINE, EMBASE and 11 other databases. We also searched two trials registers and screened the reference lists of previous reviews for additional trials. We selected randomised controlled trials (RCTs), cluster-RCTs, and quasi-RCTs of school-based education interventions for the prevention of child sexual abuse compared with another intervention or no intervention. Two review authors independently assessed the eligibility of trials for inclusion, extracted data, and assessed risk of bias. We summarised data for six outcomes: protective behaviours; knowledge of sexual abuse or sexual abuse prevention concepts; retention of protective behaviours over time; retention of knowledge over time; harm; and disclosures of sexual abuse. This is an update of a Cochrane Review that included 15 trials (up to August 2006). We identified 10 additional trials for the period to September 2014. We excluded one trial from the original review. Therefore, this update includes a total of 24 trials (5802 participants). We conducted several meta-analyses. More than half of the trials in each meta-analysis contained unit of analysis errors.1. Meta-analysis of two trials (n = 102) evaluating protective behaviours favoured intervention (odds

  17. Methodology of the National School-based Health Survey in Malaysia, 2012.

    Science.gov (United States)

    Yusoff, Fadhli; Saari, Riyanti; Naidu, Balkish M; Ahmad, Noor Ani; Omar, Azahadi; Aris, Tahir

    2014-09-01

    The National School-Based Health Survey 2012 was a nationwide school health survey of students in Standard 4 to Form 5 (10-17 years of age), who were schooling in government schools in Malaysia during the period of data collection. The survey comprised 3 subsurveys: the Global School Health Survey (GSHS), the Mental Health Survey, and the National School-Based Nutrition Survey. The aim of the survey was to provide data on the health status of adolescents in Malaysia toward strengthening the adolescent health program in the country. The design of the survey was created to fulfill the requirements of the 3 subsurveys. A 2-stage stratified sampling method was adopted in the sampling. The methods for data collection were via questionnaire and physical examination. The National School-Based Health Survey 2012 adopted an appropriate methodology for a school-based survey to ensure valid and reliable findings. © 2014 APJPH.

  18. Reducing School Violence: School-Based Curricular Programs and School Climate

    Science.gov (United States)

    Greene, Michael B.

    2008-01-01

    This article examines two different, but interrelated approaches to reduce school violence: school-based curricular programs and efforts to change school climate. The state of the research for each is reviewed and the relationship between them is explored.

  19. A school-based physical activity promotion intervention in children: rationale and study protocol for the PREVIENE Project

    Directory of Open Access Journals (Sweden)

    Pablo Tercedor

    2017-09-01

    Full Text Available Abstract Background The lack of physical activity and increasing time spent in sedentary behaviours during childhood place importance on developing low cost, easy-toimplement school-based interventions to increase physical activity among children. The PREVIENE Project will evaluate the effectiveness of five innovative, simple, and feasible interventions (active commuting to/from school, active Physical Education lessons, active school recess, sleep health promotion, and an integrated program incorporating all 4 interventions to improve physical activity, fitness, anthropometry, sleep health, academic achievement, and health-related quality of life in primary school children. Methods A total of 300 children (grade 3; 8-9 years of age from six schools in Granada (Spain will be enrolled in one of the 8-week interventions (one intervention per school; 50 children per school or a control group (no intervention school; 50 children. Outcomes will include physical activity (measured by accelerometry, physical fitness (assessed using the ALPHA fitness battery, and anthropometry (height, weight and waist circumference. Furthermore, they will include sleep health (measured by accelerometers, a sleep diary, and sleep health questionnaires, academic achievement (grades from the official school’s records, and health-related quality of life (child and parental questionnaires. To assess the effectiveness of the different interventions on objectively measured PA and the other outcomes, the generalized linear model will be used. Discussion The PREVIENE Project will provide the information about the effectiveness and implementation of different school-based interventions for physical activity promotion in primary school children.

  20. A school-based physical activity promotion intervention in children: rationale and study protocol for the PREVIENE Project.

    Science.gov (United States)

    Tercedor, Pablo; Villa-González, Emilio; Ávila-García, Manuel; Díaz-Piedra, Carolina; Martínez-Baena, Alejandro; Soriano-Maldonado, Alberto; Pérez-López, Isaac José; García-Rodríguez, Inmaculada; Mandic, Sandra; Palomares-Cuadros, Juan; Segura-Jiménez, Víctor; Huertas-Delgado, Francisco Javier

    2017-09-26

    The lack of physical activity and increasing time spent in sedentary behaviours during childhood place importance on developing low cost, easy-toimplement school-based interventions to increase physical activity among children. The PREVIENE Project will evaluate the effectiveness of five innovative, simple, and feasible interventions (active commuting to/from school, active Physical Education lessons, active school recess, sleep health promotion, and an integrated program incorporating all 4 interventions) to improve physical activity, fitness, anthropometry, sleep health, academic achievement, and health-related quality of life in primary school children. A total of 300 children (grade 3; 8-9 years of age) from six schools in Granada (Spain) will be enrolled in one of the 8-week interventions (one intervention per school; 50 children per school) or a control group (no intervention school; 50 children). Outcomes will include physical activity (measured by accelerometry), physical fitness (assessed using the ALPHA fitness battery), and anthropometry (height, weight and waist circumference). Furthermore, they will include sleep health (measured by accelerometers, a sleep diary, and sleep health questionnaires), academic achievement (grades from the official school's records), and health-related quality of life (child and parental questionnaires). To assess the effectiveness of the different interventions on objectively measured PA and the other outcomes, the generalized linear model will be used. The PREVIENE Project will provide the information about the effectiveness and implementation of different school-based interventions for physical activity promotion in primary school children.

  1. The effect of a school-based educational intervention on menstrual health: an intervention study among adolescent girls in Bangladesh.

    Science.gov (United States)

    Haque, Syed Emdadul; Rahman, Mosiur; Itsuko, Kawashima; Mutahara, Mahmuda; Sakisaka, Kayako

    2014-07-03

    To assess the impact of a school-based menstrual education programme on: (1) menstrual knowledge, beliefs and practices, (2) menstrual disorders experienced, and (3) restrictions on menstruating adolescents. Intervention study. Araihazar area, Bangladesh. 416 adolescent female students aged 11-16 years, in grade 6-8, and living with their parents. A school-based health education study conducted from April 2012 to April 2013. We randomly selected 3 of 26 high schools in the study area. We delivered 6 months of educational intervention by trained (by an obstetrician and gynaecologist) research assistants (RAs) on menstrual hygiene among school girls. RAs read the questionnaire and participants answered. The changes in knowledge, beliefs and practices regarding menstruation, menstrual disorders experienced, and the restrictions and behaviours practiced by menstruating adolescents were compared between the baseline and the follow-up assessments. After health education, participants reported a significant improvement (pmenstruation (78.6% vs 59.6%). The programme produced significant changes in the knowledge, beliefs and practices of menstrual hygiene, complications from lack of hygiene, and the behaviour and restrictions of the menstruating adolescents. These results demonstrate the feasibility of implementing a health education programme for adolescents on menstrual hygiene in secondary schools serving rural Bangladesh. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  2. Towards dynamic and interdisciplinary frameworks for school-based mental health promotion

    OpenAIRE

    O'Toole, Catriona

    2017-01-01

    Purpose – The purpose of this paper is to scrutinise two ostensibly disparate approaches to school-based mental health promotion and offer a conceptual foundation for considering possible synergies between them. Design/methodology/approach – The paper examines current conceptualisations of child and youth mental health and explores how these inform school-based prevention and intervention approaches. The dominance of discrete, “expert-driven” psychosocial programmes as well as the...

  3. Assessment of Students' and Parents' Attitudes to Continuous ...

    African Journals Online (AJOL)

    This study assessed the status of the students' (the beneficiaries) and their parents' (major stakeholders) attitudes to Continuous assessment in order to determine their entry behaviour for SBA with a view to either upgrading or sustaining. The populations of the study were the Junior Secondary School students and their ...

  4. Evaluation of the effectiveness of a school-based cannabis prevention program.

    Science.gov (United States)

    Ariza, Carles; Pérez, Anna; Sánchez-Martínez, Francesca; Diéguez, Marta; Espelt, Albert; Pasarín, M Isabel; Suelves, Josep M; De la Torre, Rafael; Nebot, Manuel

    2013-09-01

    The effectiveness of a cannabis prevention program in high school students was assessed. A quasi-experimental study was designed to evaluate the effectiveness of an intervention implemented in an intervention group (IG) with 39 schools compared with a control group (CG) of 47 schools not exposed to the intervention. Of 224 secondary schools in Barcelona, 86 were assessed in the 2005-2006 school year through a personal questionnaire administered at baseline and 15 months after the intervention. Participants consisted of 4848 ninth graders (14-15 year-olds), 2803 assigned to the IG and 2043 to the CG, according to the type and size of the school and the socioeconomic status of the school's neighborhood. The intervention consisted of a school-based cannabis prevention program (xkpts.com), with four sessions and 16 activities, implemented over 6-10h, with materials for parents and web-based student involvement. Last-month cannabis use was assessed at baseline and at 15 months' follow-up. Process evaluation indicators were assessed. At 15 months follow-up, 8.2% of boys and 8.3% of girls in the IG became last-month cannabis users versus 11.8% of boys and 11.6% of girls in the CG. These differences were statistically significant (p=0.003), representing a 29% reduction in last-month cannabis users in the IG compared with the CG. The incidence of last-month cannabis use was lowest in classrooms that adhered to the program protocol. The xkpts.com program was effective in preventing progression to last-month cannabis use. Effectiveness was higher in classrooms that adhered closely to the protocol. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  5. The role of repetition and reinforcement in school-based oral health education-a cluster randomized controlled trial.

    Science.gov (United States)

    Haleem, Abdul; Khan, Muhammad Khalil; Sufia, Shamta; Chaudhry, Saima; Siddiqui, Muhammad Irfanullah; Khan, Ayyaz Ali

    2016-01-04

    Repetition and reinforcement have been shown to play a crucial role in the sustainability of the effect of Oral Health Education (OHE) programs. However, its relevance to school-based OHE imparted by different personnel is not depicted by the existing dental literature. The present study was undertaken to determine the effectiveness of the repeated and reinforced OHE (RR-OHE) compared to one-time OHE intervention and to assess its role in school-based OHE imparted by dentist, teachers and peers. The study was a cluster randomized controlled trial that involved 935 adolescents aged 10-11 years. Twenty four boys' and girls' schools selected at random in two towns of Karachi, Pakistan were randomly assigned to three groups to receive OHE by dentist (DL), teachers (TL) and peer-leaders (PL). The groups received a single OHE session and were evaluated post-intervention and 6 months after. The three groups were then exposed to OHE for 6 months followed by 1 year of no OHE activity. Two further evaluations at 6-month and 12-month intervals were conducted. The data were collected by a self-administered questionnaire preceded by a structured interview and followed by oral examination of participants. The adolescents' oral health knowledge (OHK) in the DL and PL groups increased significantly by a single OHE session compared to their baseline knowledge (p strategy. Although the OHK scores of the DL and PL groups decreased significantly at 12-month evaluation of RR-OHE (p play a key role in school-based OHE irrespective of educators. The trained teachers and peers can play a complementary role in RR-OHE.

  6. School-based intervention for childhood disruptive behavior in disadvantaged settings: A school-based RCT with and without active teacher support.

    NARCIS (Netherlands)

    Liber, J.M.; de Boo, G.M.; Huizenga, H.; Prins, P.J.M.

    2013-01-01

    Objective: In this randomized controlled trial, we investigated the effectiveness of a school-based targeted intervention program for disruptive behavior. A child-focused cognitive behavioral therapy (CBT) program was introduced at schools in disadvantaged settings and with active teacher support

  7. The implementation of school-based lesson study at elementary school

    Directory of Open Access Journals (Sweden)

    Purnomo Purnomo

    2017-07-01

    Full Text Available This study aims to describe and interpret the implementation of school-based lesson study in SDN I Kretek. This study uses the qualitative research. The data were collected through in-depth interviews, participant observation, field notes, and documentation. The data validity was determined through sources and techniques triangulation. The data were analyzed using the Interactive Analysis Model from Miles and Huberman. The results show: (1 the planning of school-based lesson study program at SDN 1 Kretek has been implemented from the beginning of the school year 2014/2015 by establishing school-based lesson study team. This team is responsible for planning, managing, and evaluating school-based lesson study program at SDN 1 Kretek, (2 school-based lesson study at SDN 1 Kretek is implemented in three phases, namely planning, implementation, and reflection, and (3 The evaluation of lesson study is conducted by each teacher who has conducted the open class and conducted thoroughly with a meeting by a team of school-based lesson study SDN 1 Kretek at the end of the school year.

  8. Transition Metal Phosphide Nanoparticles Supported on SBA-15 as Highly Selective Hydrodeoxygenation Catalysts for the Production of Advanced Biofuels.

    Science.gov (United States)

    Yang, Yongxing; Ochoa-Hernández, Cristina; de la Peña O'Shea, Víctor A; Pizarro, Patricia; Coronado, Juan M; Serrano, David P

    2015-09-01

    A series of catalysts constituted by nanoparticles of transition metal (M = Fe, Co, Ni and Mo) phosphides (TMP) dispersed on SBA-15 were synthesized by reduction of the corresponding metal phosphate precursors previously impregnated on the mesostructured support. All the samples contained a metal-loading of 20 wt% and with an initial M/P mole ratio of 1, and they were characterized by X-ray diffraction (XRD), N2 sorption, H2-TPR and transmission electron microscopy (TEM). Metal phosphide nanocatalysts were tested in a high pressure continuous flow reactor for the hydrodeoxygenation (HDO) of a methyl ester blend containing methyl oleate (C17H33-COO-CH3) as main component (70%). This mixture constitutes a convenient surrogate of triglycerides present in vegetable oils, and following catalytic hydrotreating yields mainly n-alkanes. The results of the catalytic assays indicate that Ni2P/SBA-15 catalyst presents the highest ester conversion, whereas the transformation rate is about 20% lower for MoP/SBA-15. In contrast, catalysts based on Fe and Co phosphides show a rather limited activity. Hydrocarbon distribution in the liquid product suggests that both hydrodeoxygenation and decarboxylation/decarbonylation reactions occur simultaneously over the different catalysts, although MoP/SBA-15 possess a selectivity towards hydrodeoxygenation exceeding 90%. Accordingly, the catalyst based on MoP affords the highest yield of n-octadecane, which is the preferred product in terms of carbon atom economy. Subsequently, in order to conjugate the advantages of both Ni and Mo phosphides, a series of catalysts containing variable proportions of both metals were prepared. The obtained results reveal that the mixed phosphides catalysts present a catalytic behavior intermediate between those of the monometallic phosphides. Accordingly, only marginal enhancement of the yield of n-octadecane is obtained for the catalysts with a Mo/Ni ratio of 3. Nevertheless, owing to this high selectivity

  9. Physical state of poorly water soluble therapeutic molecules loaded into SBA-15 ordered mesoporous silica carriers: a case study with itraconazole and ibuprofen.

    Science.gov (United States)

    Mellaerts, Randy; Jammaer, Jasper A G; Van Speybroeck, Michiel; Chen, Hong; Van Humbeeck, Jan; Augustijns, Patrick; Van den Mooter, Guy; Martens, Johan A

    2008-08-19

    The ordered mesoporous silica material SBA-15 was loaded with the model drugs itraconazole and ibuprofen using three different procedures: (i) adsorption from solution, (ii) incipient wetness impregnation, and (iii) heating of a mixture of drug and SBA-15 powder. The location of the drug molecules in the SBA-15 particles and molecular interactions were investigated using nitrogen adsorption, TGA, DSC, DRS UV-vis, and XPS. The in vitro release of hydrophobic model drugs was evaluated in an aqueous environment simulating gastric fluid. The effectiveness of the loading method was found to be strongly compound dependent. Incipient wetness impregnation using a concentrated itraconazole solution in dichloromethane followed by solvent evaporation was most efficient for dispersing itraconazole in SBA-15. The itraconazole molecules were located on the mesopore walls and inside micropores of the mesopore walls. When SBA-15 was loaded by slurrying it in a diluted itraconazole solution from which the solvent was evaporated, the itraconazole molecules ended up in the mesopores that they plugged locally. At a loading of 30 wt %, itraconazole exhibited intermolecular interactions inside the mesopores revealed by UV spectroscopy and endothermic events traced with DSC. The physical mixing of itraconazole and SBA-15 powder followed by heating above the itraconazole melting temperature resulted in formulations in which glassy itraconazole particles were deposited externally on the SBA-15 particles. Loading with ibuprofen was successful with each of the three loading procedures. Ibuprofen preferably is positioned inside the micropores. In vitro release experiments showed fast release kinetics provided the drug molecules were evenly deposited over the mesoporous surface.

  10. Production of Renewable Hydrogen from Glycerol Steam Reforming over Bimetallic Ni-(Cu,Co,Cr Catalysts Supported on SBA-15 Silica

    Directory of Open Access Journals (Sweden)

    Alicia Carrero

    2017-02-01

    Full Text Available Glycerol steam reforming (GSR is a promising alternative to obtain renewable hydrogen and help the economics of the biodiesel industry. Nickel-based catalysts are typically used in reforming reactions. However, the choice of the catalyst greatly influences the process, so the development of bimetallic catalysts is a research topic of relevant interest. In this work, the effect of adding Cu, Co, and Cr to the formulation of Ni/SBA-15 catalysts for hydrogen production by GSR has been studied, looking for an enhancement of its catalytic performance. Bimetallic Ni-M/SBA-15 (M: Co, Cu, Cr samples were prepared by incipient wetness co-impregnation to reach 15 wt % of Ni and 4 wt % of the second metal. Catalysts were characterized by inductively coupled plasma atomic emission spectroscopy (ICP-AES, N2-physisorption, X-ray powder diffraction (XRD, hydrogen temperature programmed reduction (H2-TPR, transmission electron microscopy (TEM, scanning electron microscopy (SEM, and thermogravimetric analyses (TGA, and tested in GSR at 600 °C and atmospheric pressure. The addition of Cu, Co, and Cr to the Ni/SBA-15 catalyst helped to form smaller crystallites of the Ni phase, this effect being more pronounced in the case of the Ni-Cr/SBA-15 sample. This catalyst also showed a reduction profile shifted towards higher temperatures, indicating stronger metal-support interaction. As a consequence, the Ni-Cr/SBA-15 catalyst exhibited the best performance in GSR in terms of glycerol conversion and hydrogen production. Additionally, Ni-Cr/SBA-15 achieved a drastic reduction in coke formation compared to the Ni/SBA-15 material.

  11. School-based education programmes for the prevention of child sexual abuse.

    Science.gov (United States)

    Zwi, K J; Woolfenden, S R; Wheeler, D M; O'brien, T A; Tait, P; Williams, K W

    2007-07-18

    Child sexual abuse is a significant problem that requires an effective means of prevention. To assess: if school-based programmes are effective in improving knowledge about sexual abuse and self-protective behaviours; whether participation results in an increase in disclosure of sexual abuse and/or produces any harm; knowledge retention and the effect of programme type or setting. Electronic searches of Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, PsycINFO, CINAHL, Sociological Abstracts, Dissertation Abstracts and other databases using MESH headings and text words specific for child sexual assault and randomised controlled trials (RCTs) were conducted in August 2006. RCTs or quasi-RCTs of school-based interventions to prevent child sexual abuse compared with another intervention or no intervention. Meta-analyses and sensitivity analysis, using two imputed intraclass correlation coefficients (ICC) (0.1, 0.2), were used for four outcomes: protective behaviours, questionnaire-based knowledge, vignette-based knowledge and disclosure of abuse. Meta-analysis was not possible for retention of knowledge, likelihood of harm, or effect of programme type and setting. Fifteen trials measuring knowledge and behaviour change as a result of school-based child sexual abuse intervention programmes were included. Over half the studies in each initial meta-analysis contained unit of analysis errors. For behaviour change, two studies had data suitable for meta-analysis; results favoured intervention (OR 6.76, 95% CI 1.44, 31.84) with moderate heterogeneity (I(2)=56.0%) and did not change significantly when adjustments using intraclass coefficients were made. Nine studies were included in a meta-analysis evaluating questionnaire-based knowledge. An increase in knowledge was found (SMD 0.59; 0.44, 0.74, heterogeneity (I2=66.4%). When adjusted for an ICC of 0.1 and 0.2 the results were SMD 0.6 (0.45, 0.75) and 0.57 (0.44, 0.71) respectively. Heterogeneity decreased

  12. Longitudinal behavioral effects of a school-based fruit and vegetable promotion program.

    Science.gov (United States)

    Hoffman, Jessica A; Franko, Debra L; Thompson, Douglas R; Power, Thomas J; Stallings, Virginia A

    2010-01-01

    This study examined the longitudinal effects of a school-based program on kindergarten and first grade children's fruit and vegetable (F&V) consumption. The program included lunchroom, classroom, school-wide, and family components. The primary dependent variable, F&V consumed at lunch, was assessed using weighed plate waste. Hierarchical linear models were used to analyze the differences between intervention and control groups and to account for repeated measurements. Children in the experimental group consumed more F&V (F = 29 g; V = 6 g; 0.43 portions/lunch; 0.28 servings/lunch) at the end of Year 1 compared with children in the control group. At the end of Year 2, children in the experimental group consumed more fruit (21 g; 0.23 portions/lunch; 0.15 servings/lunch), but not more vegetables compared with children in the control group. The intervention resulted in increased F&V consumption, with more pronounced and enduring effects for fruits than vegetables.

  13. School-Based Influenza Vaccination: Health and Economic Impact of Maine's 2009 Influenza Vaccination Program.

    Science.gov (United States)

    Basurto-Dávila, Ricardo; Meltzer, Martin I; Mills, Dora A; Beeler Asay, Garrett R; Cho, Bo-Hyun; Graitcer, Samuel B; Dube, Nancy L; Thompson, Mark G; Patel, Suchita A; Peasah, Samuel K; Ferdinands, Jill M; Gargiullo, Paul; Messonnier, Mark; Shay, David K

    2017-12-01

    To estimate the societal economic and health impacts of Maine's school-based influenza vaccination (SIV) program during the 2009 A(H1N1) influenza pandemic. Primary and secondary data covering the 2008-09 and 2009-10 influenza seasons. We estimated weekly monovalent influenza vaccine uptake in Maine and 15 other states, using difference-in-difference-in-differences analysis to assess the program's impact on immunization among six age groups. We also developed a health and economic Markov microsimulation model and conducted Monte Carlo sensitivity analysis. We used national survey data to estimate the impact of the SIV program on vaccine coverage. We used primary data and published studies to develop the microsimulation model. The program was associated with higher immunization among children and lower immunization among adults aged 18-49 years and 65 and older. The program prevented 4,600 influenza infections and generated $4.9 million in net economic benefits. Cost savings from lower adult vaccination accounted for 54 percent of the economic gain. Economic benefits were positive in 98 percent of Monte Carlo simulations. SIV may be a cost-beneficial approach to increase immunization during pandemics, but programs should be designed to prevent lower immunization among nontargeted groups. © Health Research and Educational Trust.

  14. School-based control of soil-transmitted helminthiasis in western Visayas, Philippines.

    Science.gov (United States)

    Belizario, V Y; Totañes, F I G; de Leon, W U; Matias, K M H

    2014-05-01

    We evaluated the effect of a local government unit-led, school-based, teacher-assisted mass drug administration (MDA) treatment of soil-transmitted helminthiasis (STH) on the morbidity of school children in selected provinces of western Visayas, the Philippines. Parasitological assessment was done on stool samples using the Kato-Katz technique. Nutritional status and school performance were also evaluated using secondary data from the Department of Education. The overall prevalence of STH decreased from 71.1% to 44.3% (p < 0.0001) and the prevalence of heavy infection with STH decreased from 40.5% to 14.5% (p < 0.0001), after two years of biannual MDA. The prevalence of underweight children decreased from 26.2% to 17.8% (p < 0.0001) and the prevalence of stunted children decreased from 20.9% to 16.6% (p < 0.0001) after two years of biannual MDA. School performance improved on standardized testing from a mean percentage of 53.8% to 64.6%. Advocacy, social mobilization, strong local government support and intersectoral collaboration with other agencies probably contributed to the success of the program.

  15. Family homework and school-based sex education: delaying early adolescents' sexual behavior.

    Science.gov (United States)

    Grossman, Jennifer M; Frye, Alice; Charmaraman, Linda; Erkut, Sumru

    2013-11-01

    Early sexual activity can undermine adolescents' future school success and health outcomes. The purpose of this study was to assess the role of a family homework component of a comprehensive sex education intervention in delaying sexual initiation for early adolescents and to explore what social and contextual factors prevent adolescents from completing these family homework activities. This mixed methods study included 6th- and 7th-grade survey responses from 706 students at 11 middle school schools receiving a sex education intervention, as well as interviews from a subset of 33, 7th-grade students from the larger sample. Adolescents who completed more family homework assignments were less likely to have vaginal intercourse in 7th grade than those who completed fewer assignments, after controlling for self-reports of having had vaginal intercourse in 6th grade and demographic variables. Participants' explanations for not completing assignments included personal, curriculum, and family-based reasons. Family homework activities designed to increase family communication about sexual issues can delay sex among early adolescents and contribute to school-based sex education programs. Successful sex education programs must identify and address barriers to family homework completion. © 2013, American School Health Association.

  16. Covalent Anchoring of Chloroperoxidase and Glucose Oxidase on the Mesoporous Molecular Sieve SBA-15

    Directory of Open Access Journals (Sweden)

    Martin Hartmann

    2010-02-01

    Full Text Available Functionalization of porous solids plays an important role in many areas, including heterogeneous catalysis and enzyme immobilization. In this study, large-pore ordered mesoporous SBA-15 molecular sieves were synthesized with tetraethyl orthosilicate (TEOS in the presence of the non-ionic triblock co-polymer Pluronic P123 under acidic conditions. These materials were grafted with 3 aminopropyltrimethoxysilane (ATS, 3-glycidoxypropyltrimethoxysilane (GTS and with 3 aminopropyltrimethoxysilane and glutaraldehyde (GA-ATS in order to provide covalent anchoring points for enzymes. The samples were characterized by nitrogen adsorption, powder X-ray diffraction, solid-state NMR spectroscopy, elemental analysis, diffuse reflectance fourier transform infrared spectroscopy and diffuse reflectance UV/Vis spectroscopy. The obtained grafted materials were then used for the immobilization of chloroperoxidase (CPO and glucose oxidase (GOx and the resulting biocatalysts were tested in the oxidation of indole. It is found that enzymes anchored to the mesoporous host by the organic moieties can be stored for weeks without losing their activity. Furthermore, the covalently linked enzymes are shown to be less prone to leaching than the physically adsorbed enzymes, as tested in a fixed-bed reactor under continuous operation conditions.

  17. Summary different routes for procurement of molecular sieves type AL-SBA-15

    International Nuclear Information System (INIS)

    Figueiroa, D.S.; Santos, J.O.P.N.; Medeiros, C.D.; Sousa, B.V.

    2012-01-01

    The search for new materials to assist industrial development, especially in the chemical industry has been growing more and more. Molecular sieves are great examples of these materials that aim the improvement of various chemical processes. The present work aimed to synthesize the molecular sieve Al-SBA-15 by two different synthesis procedures. In procedure A was used a temperature of 40°C for 24 hours during stirring process. For B process the stirring procedure was done at room temperature. The molar composition of reactants was: 1.0 SiO 2 : 0.04 Al 2 O 3 :0.0168 EO 20 PO 70 EO 20 : 5.85 HCl: 160 H 2 O. The pH of the reaction gel was adjusted to 7 and after the gel was putted under 100 deg C for 48 hours for the heat treatment. Then the sample was calcined under flowing air at 500° C for 6 hours. By techniques such as XRD and SEM, it was confirmed the formation of the hexagonal mesoporous structure, with an orderly distribution of its pores, also indicating the successful incorporation of aluminum into the hexagonal structure of the catalyst support. (author)

  18. Efficient epoxidation over cyanocobalamine containing SBA-15 organic-inorganic nanohybrids

    Energy Technology Data Exchange (ETDEWEB)

    Karimi, Z. [Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran (Iran, Islamic Republic of); Mahjoub, A.R., E-mail: mahjouba@modares.ac.ir [Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran (Iran, Islamic Republic of)

    2010-05-01

    SBA-15 mesoporous silica is synthesized using triblock copolymer P123 surfactant and chemically modified by aminopropyl, thiol, ammonium and sulfonic acid functional groups. Functionalization is performed via post synthesize method using 3-aminopropyltriethoxysilane (APTES) or 3-mercatopropyl trimethoxysilane (MPTMS) precursor. The as synthesized mesoporous systems are applied for immobilization of cyanocobalamine. Functionalization effectively improves sorption properties of the supports, while different functional groups exert different effects. The organic-inorganic mesoporous materials are characterized via X-ray diffraction (XRD), nitrogen adsorption and desorption, transmission electron microscopy (TEM), FT-IR and inductively coupled plasma-optical emission (ICP). The newly synthesized systems exhibit high catalytic activity for heterogeneous epoxidation of cyclooctene in presence of hydrogen peroxide. Reaction conditions are optimized, effect of functional groups on performance of the catalysts is taken into consideration and reusability of the designed heterogeneous systems is studied. Systems with chemically modified supports are shown to be more efficient and stable catalysts however; chemical nature of functional groups plays a crucial role.

  19. An efficient hybrid, nanostructured, epoxidation catalyst: titanium silsesquioxane-polystyrene copolymer supported on SBA-15.

    Science.gov (United States)

    Zhang, Lei; Abbenhuis, Hendrikus C L; Gerritsen, Gijsbert; Bhriain, Nollaig Ní; Magusin, Pieter C M M; Mezari, Brahim; Han, Wei; van Santen, Rutger A; Yang, Qihua; Li, Can

    2007-01-01

    A novel interfacial hybrid epoxidation catalyst was designed with a new immobilization method for homogeneous catalysts by coating an inorganic support with an organic polymer film containing active sites. The titanium silsesquioxane (TiPOSS) complex, which contains a single-site titanium active center, was immobilized successfully by in-situ copolymerization on a mesoporous SBA-15-supported polystyrene polymer. The resulting hybrid materials exhibit attractive textural properties (highly ordered mesostructure, large specific surface area (>380 m2 g-1) and pore volume (>or==0.46 cm3 g-1)), and high activity in the epoxidation of alkenes. In the epoxidation of cyclooctene with tert-butyl hydrogen peroxide (TBHP), the hybrid catalysts have rate constants comparable with that of their homogeneous counterpart, and can be recycled at least seven times. They can also catalyze the epoxidation of cyclooctene with aqueous H2O2 as the oxidant. In two-phase reaction media, the catalysts show much higher activity than their homogeneous counterpart due to the hydrophobic environment around the active centers. They behave as interfacial catalysts due to their multifunctionality, that is, the hydrophobicity of polystyrene and the polyhedral oligomeric silsesquioxanes (POSS), and the hydrophilicity of the silica and the mesoporous structure. Combination of the immobilization of homogeneous catalysts on two conventional supports, inorganic solid and organic polymer, is demonstrated to achieve novel heterogeneous catalytic ensembles with the merits of attractive textural properties, tunable surface properties, and optimized environments around the active sites.

  20. Physical properties of ordered mesoporous SBA-15 silica as immunological adjuvant

    Science.gov (United States)

    Mariano-Neto, F.; Matos, J. R.; Cides da Silva, L. C.; Carvalho, L. V.; Scaramuzzi, K.; Sant'Anna, O. A.; Oliveira, C. P.; Fantini, M. C. A.

    2014-10-01

    This work reports a detailed analysis of the ordered mesoporous SBA-15 silica synthesis procedure that provides a matrix with mean pore diameter around 10 nm. The encapsulation of bovine serum albumin (BSA) by four different methods allowed the determination of the best imbibition condition, which is keeping the mixture under rest and solvent evaporation. Simulation of the in situ SAXS scattered intensity of the BSA release in potassium buffer solution, gastrointestinal fluids revealed a slow evolution of BSA content, independent of the media. Proton induced x-ray emission results obtained in calcined mouse organs revealed that silica is only present in the spleen after 35 days and is completely eliminated from all mouse organs after 10 weeks. Biological studies showed that Santa Barbara Amorphous-15 is an effective adjuvant when compared to the traditional Al(OH)3, and is non-toxic to mice, rats, dogs and even cells, such as macrophages and dendritic cells. Recent studies showed that the immunological response is improved by enhancing the inflammatory response and the recruitment of immune competent cells to the site of injection as by the oral route and, most importantly, by increasing the number of phagocytes of a particulate antigen by antigen presenting cells. This research is under the scope of the International Patent WO 07030901, IN248654,ZA2008/02277, KR 1089400, MX297263, JP5091863, CN101287491B.

  1. The Epoxidation of Limonene over the TS-1 and Ti-SBA-15 Catalysts

    Directory of Open Access Journals (Sweden)

    Agnieszka Wróblewska

    2014-11-01

    Full Text Available Limonene belongs to a group of very important intermediates used in the production of fine chemicals. This monoterpene compound can be obtained from peels of oranges or lemon which are a (biomass waste from the orange juice industry. Thus, limonene is a renewable, easy available and a relatively cheap compound. This work presents preliminary studies on the process of limonene epoxidation over zeolite type catalysts such as: TS-1 and Ti-SBA-15. In these studies methanol was used as a solvent and as an oxidizing agent a 60 wt % hydrogen peroxide solution was applied. The activity of each catalyst was investigated for four chosen temperatures (0 °C, 40 °C, 80 °C and 120 °C. The reaction time was changed from 0.5 to 24 h. For each catalyst the most beneficial conditions (the appropriate temperature and the reaction time have been established. The obtained results were compared and the most active catalyst was chosen. These studies have also shown different possible ways of limonene transformation, not only in the direction of 1,2-epoxylimonene and its corresponding diol, but also in direction of carveol, carvone and perillyl alcohol—compounds with a lot of applications. The possible mechanisms of formation of the allylic oxidation products were proposed.

  2. Preparation of ionic liquid-modified SBA-15 doped with molybdovanadophosphoric acid for oxidative desulfurization

    International Nuclear Information System (INIS)

    Zhuang, Jiang Zhou; Jin, Xiao Yin; Shen, Xian Lin; Tan, Jun Jun; Nie, Long Hui; Xiang, Jian; Hu, Bing

    2015-01-01

    A series of catalysts, ionic liquid-modified SBA-15 (denoted ILSBA) doped with H 5 PMo 10 V 2 O 40 (HPMoV 2 ) have been synthesized and characterized by XRD, FT-IR, 1 H NMR, TG-DTA, and TEM. The catalyst was used for the removal of dibenzothiophene (DBT) in model oil combined with hydrogen peroxide (the oxidant) and acetonitrile (the phase-transfer agent). It was observed that the sulfur content of DBT can be reduced from 500 to 2 ppm by adjusting the amount of catalyst, the reaction temperatures and the reaction time. Besides, the catalyst activity for different sulfur compounds showed a huge difference which may be mainly affected by the electron densities of sulfur atom. Moreover, the catalyst can be recycled seven times without a significant loss in activity, which could be ascribed to the strong electrostatic interaction between ILSBA and HPMoV 2 . In addition, a postulated mechanism was proposed to reveal the oxidative desulfurization process

  3. Preparation of ionic liquid-modified SBA-15 doped with molybdovanadophosphoric acid for oxidative desulfurization

    Energy Technology Data Exchange (ETDEWEB)

    Zhuang, Jiang Zhou; Jin, Xiao Yin; Shen, Xian Lin; Tan, Jun Jun; Nie, Long Hui; Xiang, Jian; Hu, Bing [Dept. of chool of Chemistry and Chemical Engineering, Hubei University of Technology, Wuhan (China)

    2015-07-15

    A series of catalysts, ionic liquid-modified SBA-15 (denoted ILSBA) doped with H{sub 5}PMo{sub 10}V{sub 2}O{sub 40} (HPMoV{sub 2}) have been synthesized and characterized by XRD, FT-IR, {sup 1}H NMR, TG-DTA, and TEM. The catalyst was used for the removal of dibenzothiophene (DBT) in model oil combined with hydrogen peroxide (the oxidant) and acetonitrile (the phase-transfer agent). It was observed that the sulfur content of DBT can be reduced from 500 to 2 ppm by adjusting the amount of catalyst, the reaction temperatures and the reaction time. Besides, the catalyst activity for different sulfur compounds showed a huge difference which may be mainly affected by the electron densities of sulfur atom. Moreover, the catalyst can be recycled seven times without a significant loss in activity, which could be ascribed to the strong electrostatic interaction between ILSBA and HPMoV{sub 2}. In addition, a postulated mechanism was proposed to reveal the oxidative desulfurization process.

  4. In situ synthesis of copper nanoparticles on SBA-16 silica spheres

    Directory of Open Access Journals (Sweden)

    Asma Tufail Shah

    2016-07-01

    Full Text Available A chemical method for in situ synthesis of copper nanoparticles on SBA-16 silica spheres under ambient conditions has been reported. The silica support has been introduced into copper precursor solution before chemical reduction. Metal ions diffuse into mesopores (pore diameter 5–7 nm of silica where in situ reduction by hydrazine leads to formation of nanoparticles. These mesopores act as nanoreactor and their walls prevent metal particle’s agglomeration by providing a physical barrier. The obtained copper nanoparticles have been investigated by electron microscopy, X-ray diffraction, UV–Visible spectroscopy, Fourier transform Infra-red spectroscopy and thermogravimetric analyzer. SEM, TEM and UV–Visible spectroscopic images revealed that nanosized particles have been successfully synthesized by this method. Thermogravimetric investigations revealed that copper nanoparticles impregnated on silica were thermally more stable compared to unsupported nanoparticles. Silica not only helps in maintaining the particle size but also makes nanoparticles stable at high temperatures due to its thick pore walls. Macro sized silica support also makes separation/handling of nanoparticles easy and simple.

  5. Effect of School-based Human Papillomavirus (HPV) Vaccination on ...

    African Journals Online (AJOL)

    AJRH Managing Editor

    assessed girls' knowledge of cervical cancer and HPV vaccine, and their acceptance of future vaccination of ... studies involve parents and young adults. The ... vaccine was delivered during the routine Child ... and attitudes about the vaccine.

  6. Gender differences and a school-based obesity prevention program in Argentina: a randomized trial.

    Science.gov (United States)

    Rausch Herscovici, Cecile; Kovalskys, Irina; De Gregorio, María José

    2013-08-01

    To evaluate the impact of a school-based obesity prevention program that seeks to change food intake among students at schools in Rosario, Argentina. This was a prospective study involving 405 children 9-11 years of age at six schools in the poor areas of Rosario, Argentina, in May-October 2008. After matching for socioeconomic status, schools were selected by simple randomization; participants were assessed at baseline (T1) and again 6 months later, after completion of the intervention (T2). The program focused on increasing the children's knowledge of healthy nutrition and exercise through four workshops; educating the parents/caregivers; and offering healthy options at the school snack bar. The main outcome measures were the children's intake of healthy and unhealthy foods (assessed with a weekly food frequency questionnaire) and their body mass index (BMI). Of the 387 children assessed at T1, 369 were reassessed at T2 (205 intervention; 164 control). Girls at the schools where the intervention occurred increased their intake of three of the five healthy food items promoted by the program (fruits, vegetables, low-sugar cereals). Statistical significance was reached for skim milk (P = 0.03) and for pure orange juice (P = 0.05). Boys of both the intervention and control groups failed to improve their intake of healthy foods, but those of the intervention arm significantly reduced their intake of hamburgers and hot dogs (P = 0.001). Girls were more amenable to improving their dietary intake. Overall, the program was more likely to increase consumption of healthy food than to decrease intake of unhealthy foods. Gender differences should be taken into account when designing preventive interventions.

  7. Gender differences and a school-based obesity prevention program in Argentina: a randomized trial

    Directory of Open Access Journals (Sweden)

    Cecile Rausch Herscovici

    2013-08-01

    Full Text Available OBJECTIVE: To evaluate the impact of a school-based obesity prevention program that seeks to change food intake among students at schools in Rosario, Argentina. METHODS: This was a prospective study involving 405 children 9-11 years of age at six schools in the poor areas of Rosario, Argentina, in May-October 2008. After matching for socioeconomic status, schools were selected by simple randomization; participants were assessed at baseline (T1 and again 6 months later, after completion of the intervention (T2. The program focused on increasing the children's knowledge of healthy nutrition and exercise through four workshops; educating the parents/caregivers; and offering healthy options at the school snack bar. The main outcome measures were the children's intake of healthy and unhealthy foods (assessed with a weekly food frequency questionnaire and their body mass index (BMI. RESULTS: Of the 387 children assessed at T1, 369 were reassessed at T2 (205 intervention; 164 control. Girls at the schools where the intervention occurred increased their intake of three of the five healthy food items promoted by the program (fruits, vegetables, low-sugar cereals. Statistical significance was reached for skim milk (P = 0.03 and for pure orange juice (P = 0.05. Boys of both the intervention and control groups failed to improve their intake of healthy foods, but those of the intervention arm significantly reduced their intake of hamburgers and hot dogs (P = 0.001. CONCLUSIONS: Girls were more amenable to improving their dietary intake. Overall, the program was more likely to increase consumption of healthy food than to decrease intake of unhealthy foods. Gender differences should be taken into account when designing preventive interventions.

  8. Effectiveness of school-based family asthma educational programs in quality of life and asthma exacerbations in asthmatic children aged five to 18: a systematic review.

    Science.gov (United States)

    Walter, Helen; Sadeque-Iqbal, Fatema; Ulysse, Rose; Castillo, Doreen; Fitzpatrick, Aileen; Singleton, Joanne

    2016-11-01

    Asthma is a common, chronic, non-communicable respiratory disease that affects millions of children worldwide. Asthma exacerbations can range from mild to severe and can have an unfavorable impact on the quality of life of children and their caregivers. Asthma exacerbations often result in absenteeism from school or work, activity intolerance and emergency hospital visits. One strategy to address this health issue in an attempt to improve health outcomes is school-based asthma educational programs. A review of the literature revealed that previous systematic reviews have examined similar topics on the effectiveness of school-based asthma educational programs that have included collaborative efforts between parents and schools. No systematic reviews were found that examined the effectiveness of school-based asthma educational programs that exclusively included children and their caregivers. Research has not been systematically reviewed to determine the effectiveness of a school-based asthma educational program within a familial context. To identify the best available evidence on the effectiveness of school-based family asthma educational programs that exclusively included both children and caregivers on the quality of life and number of asthma exacerbations of children aged five to 18 years with a clinical diagnosis of asthma. Children aged five to 18 years of any gender, race or ethnicity with a clinical diagnosis of asthma and their caregivers. School-based family asthma educational programs. Randomized controlled trials. Quality of life and the number of asthma exacerbations measured by either missed days from school or work, and/or physical activity intolerance, and/or emergency hospital visits. The search strategy aimed to find both published and unpublished studies from inception of the database to August 21, 2015. Quantitative papers selected for retrieval were assessed by two independent reviewers for methodological validity before inclusion in the review

  9. A Dual-Functional [SBA-15/Fe3O4/P(N-iPAAm] Hybrid System as a Potential Nanoplatform for Biomedical Application

    Directory of Open Access Journals (Sweden)

    Andreza de Sousa

    2014-01-01

    Full Text Available The synthesis strategy of a multifunctional system of [SBA-15/Fe3O4/P(N-iPAAm] hybrids of interest for bioapplications was explored. Magnetite nanoparticles coated by mesoporous silica were prepared by an alternative chemical route using neutral surfactant and without the application of any functionalization method. Monomer adsorption followed by in situ polymerization initiated by a radical was the adopted procedure to incorporate the hydrogel into the pore channels of silica nanocomposite. Characterization of the materials was carried out by using X-ray diffraction (XRD, Fourier-transform infrared spectroscopy (FTIR, N2 adsorption, transmission electron microscopy (TEM, and Temperature programmed reduction studies (TPR. Their application as drug delivery system using atenolol as a model drug to assess the influence of the application of low frequency alternating magnetic fields on drug release was evaluated. The structural characteristics of the magnetic hybrid nanocomposite, including the effect of the swelling behavior on heating by the application of an alternating magnetic field, are presented and discussed.

  10. A novel visible light-driven Ag{sub 3}PO{sub 4}/SBA-15 nanocomposite: Preparation and application in the photo-degradation of pollutants

    Energy Technology Data Exchange (ETDEWEB)

    Chai, Yuanyuan; Wang, Li; Ren, Jia; Dai, Wei-Lin, E-mail: wldai@fudan.edu.cn

    2015-01-01

    Graphical abstract: - Highlights: • Highly efficient visible-light-driven Ag{sub 3}PO{sub 4}/SBA-15 nanocomposite. • Application in the photo-degradation of RhB. • Synthesis from a facile and simple colloidal method. • 20%-Ag{sub 3}PO{sub 4}/SBA-15 shows 8 times faster degradation rate than Ag{sub 3}PO{sub 4}. • Super stability and recycling ability. - Abstract: A novel visible light-driven environmental-benign Ag{sub 3}PO{sub 4}/SBA-15 nanocomposite photo-catalyst was synthesized for the photo-degradation of pollutants. The exploration on adsorption and photo-catalysis of dye or organic pollution for the nanocomposite was carried out. The adsorption capability for Ag{sub 3}PO{sub 4}/SBA-15 nanocomposite increases by 3 times compared with that of the Ag{sub 3}PO{sub 4} particles. The photo-catalytic activity of nanocomposite is higher than pristine Ag{sub 3}PO{sub 4} nanoparticle for the degradation of RhB or MO under visible light irradiation (λ > 420 nm). The effect of Ag{sub 3}PO{sub 4} loading on the catalytic performance was also studied. The results show that the optimum degradation is achieved over 20% Ag{sub 3}PO{sub 4}/SBA-15. Compared to pure Ag{sub 3}PO{sub 4} nanoparticle, the most efficient catalyst showed 8 times higher photo-catalytic activity for the degradation of RhB. The Ag{sub 3}PO{sub 4}/SBA-15 catalysts were systematically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–Vis diffuse reflectance spectroscopy (DRS), and N{sub 2}-adsorption–desorption isotherms (BET). A possible mechanism scheme regarding photo-degradation enhancement induced by dye enrichments has been proposed on the Ag{sub 3}PO{sub 4}/SBA-15 nanocomposite. Additionally, the SBA-15 support can enhance the efficiency of separation of catalyst from the reaction mixture, implying that the Ag{sub 3}PO{sub 4} loading on the SBA-15 catalyst will not result in the extra environment and health

  11. A novel visible light-driven Ag3PO4/SBA-15 nanocomposite: Preparation and application in the photo-degradation of pollutants

    International Nuclear Information System (INIS)

    Chai, Yuanyuan; Wang, Li; Ren, Jia; Dai, Wei-Lin

    2015-01-01

    Graphical abstract: - Highlights: • Highly efficient visible-light-driven Ag 3 PO 4 /SBA-15 nanocomposite. • Application in the photo-degradation of RhB. • Synthesis from a facile and simple colloidal method. • 20%-Ag 3 PO 4 /SBA-15 shows 8 times faster degradation rate than Ag 3 PO 4 . • Super stability and recycling ability. - Abstract: A novel visible light-driven environmental-benign Ag 3 PO 4 /SBA-15 nanocomposite photo-catalyst was synthesized for the photo-degradation of pollutants. The exploration on adsorption and photo-catalysis of dye or organic pollution for the nanocomposite was carried out. The adsorption capability for Ag 3 PO 4 /SBA-15 nanocomposite increases by 3 times compared with that of the Ag 3 PO 4 particles. The photo-catalytic activity of nanocomposite is higher than pristine Ag 3 PO 4 nanoparticle for the degradation of RhB or MO under visible light irradiation (λ > 420 nm). The effect of Ag 3 PO 4 loading on the catalytic performance was also studied. The results show that the optimum degradation is achieved over 20% Ag 3 PO 4 /SBA-15. Compared to pure Ag 3 PO 4 nanoparticle, the most efficient catalyst showed 8 times higher photo-catalytic activity for the degradation of RhB. The Ag 3 PO 4 /SBA-15 catalysts were systematically characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–Vis diffuse reflectance spectroscopy (DRS), and N 2 -adsorption–desorption isotherms (BET). A possible mechanism scheme regarding photo-degradation enhancement induced by dye enrichments has been proposed on the Ag 3 PO 4 /SBA-15 nanocomposite. Additionally, the SBA-15 support can enhance the efficiency of separation of catalyst from the reaction mixture, implying that the Ag 3 PO 4 loading on the SBA-15 catalyst will not result in the extra environment and health problems and reduce the cost of wastewater treatment

  12. School-Based Screening to Identify At-Risk Students Not Already Known to School Professionals: The Columbia Suicide Screen

    Science.gov (United States)

    Wilcox, Holly C.; Schonfeld, Irvin Sam; Davies, Mark; Hicks, Roger C.; Turner, J. Blake; Shaffer, David

    2009-01-01

    Objectives. We sought to determine the degree of overlap between students identified through school-based suicide screening and those thought to be at risk by school administrative and clinical professionals. Methods. Students from 7 high schools in the New York metropolitan area completed the Columbia Suicide Screen; 489 of the 1729 students screened had positive results. The clinical status of 641 students (73% of those who had screened positive and 23% of those who had screened negative) was assessed with modules from the Diagnostic Interview Schedule for Children. School professionals nominated by their principal and unaware of students' screening and diagnostic status were asked to indicate whether they were concerned about the emotional well-being of each participating student. Results. Approximately 34% of students with significant mental health problems were identified only through screening, 13.0% were identified only by school professionals, 34.9% were identified both through screening and by school professionals, and 18.3% were identified neither through screening nor by school professionals. The corresponding percentages among students without mental health problems were 9.1%, 24.0%, 5.5%, and 61.3%. Conclusions. School-based screening can identify suicidal and emotionally troubled students not recognized by school professionals. PMID:19059865

  13. Impact of parental weight status on a school-based weight management programme designed for Mexican-American children.

    Science.gov (United States)

    Moreno, J P; Johnston, C A; Hernandez, D C; LeNoble, J; Papaioannou, M A; Foreyt, J P

    2016-10-01

    While overweight and obese children are more likely to have overweight or obese parents, less is known about the effect of parental weight status on children's success in weight management programmes. This study was a secondary data analysis of a randomized controlled trial and investigated the impact of having zero, one or two obese parents on children's success in a school-based weight management programme. Sixty-one Mexican-American children participated in a 24-week school-based weight management intervention which took place in 2005-2006. Children's heights and weights were measured at baseline, 3, 6 and 12 months. Parental weight status was assessed at baseline. Repeated measures anova and ancova were conducted to compare changes in children's weight within and between groups, respectively. Within-group comparisons revealed that the intervention led to significant decreases in standardized body mass index (zBMI) for children with zero (F = 23.16, P weight management programme appears to be most efficacious for children with one or no obese parents compared to children with two obese parents. These results demonstrate the need to consider parental weight status when engaging in childhood weight management efforts. © 2015 World Obesity.

  14. The Shaping Healthy Choices Program: design and implementation methodologies for a multicomponent, school-based nutrition education intervention.

    Science.gov (United States)

    Scherr, Rachel E; Linnell, Jessica D; Smith, Martin H; Briggs, Marilyn; Bergman, Jacqueline; Brian, Kelley M; Dharmar, Madan; Feenstra, Gail; Hillhouse, Carol; Keen, Carl L; Nguyen, Lori M; Nicholson, Yvonne; Ontai, Lenna; Schaefer, Sara E; Spezzano, Theresa; Steinberg, Francene M; Sutter, Carolyn; Wright, Janel E; Young, Heather M; Zidenberg-Cherr, Sheri

    2014-01-01

    To provide a framework for implementation of multicomponent, school-based nutrition interventions. This article describes the research methods for the Shaping Healthy Choices Program, a model to improve nutrition and health-related knowledge and behaviors among school-aged children. Longitudinal, pretest/posttest, randomized, controlled intervention. Four elementary schools in California. Fourth-grade students at intervention (n = 252) and control (n = 238) schools and their parents and teachers. Power analyses demonstrate that a minimum of 159 students per group will be needed to achieve sufficient power. The sample size was determined using the variables of nutrition knowledge, vegetable preference score, and body mass index percentile. A multicomponent school-based nutrition education intervention over 1 academic year, followed by activities to support sustainability of the program. Dietary and nutrition knowledge and behavior, critical thinking skills, healthy food preferences and consumption, and physical activity will be measured using a nutrition knowledge questionnaire, a food frequency questionnaire, a vegetable preferences assessment tool, the Test of Basic Science Process Skills, digital photography of plate waste, PolarActive accelerometers, anthropometrics, a parent questionnaire, and the School and Community Actions for Nutrition survey. Evaluation will include quantitative and qualitative measures. Quantitative data will use paired t, chi-square, and Mann-Whitney U tests and regression modeling using P = .05 to determine statistical significance. Copyright © 2014 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

  15. A highly sensitive electrochemical sensor for the determination of methanol based on PdNPs@SBA-15-PrEn modified electrode.

    Science.gov (United States)

    Karimi, Ziba; Shamsipur, Mojtaba; Tabrizi, Mahmoud Amouzadeh; Rostamnia, Sadegh

    2018-05-01

    In this study, a novel electrochemical sensor for the determination of methanol based on palladium nanoparticles supported on Santa barbara amorphous-15- PrNHEtNH 2 (PdNPs@SBA-15-PrEn) as nanocatalysis platform is presented. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and electrochemical methods are employed to characterize the PdNPs@SBA-15-PrEn nanocomposite. The Nafion-Pd@SBA-15-PrEn modified glassy carbon electrode (Nafion-PdNPs@SBA-15-PrEn/GCE) displayed the high electrochemical activity and excellent catalytic characteristic for electro-oxidation of methanol in an alkaline solution. The electro-oxidation performance of the proposed sensor was investigated using cyclic voltammetry (CV) and amperometry. The sensor exhibits a good sensitivity of 0.0905 Amol -1 Lcm -2 , linear range of 20-1000 μM and the corresponding detection limit of 12 μM (3σ). The results demonstrate that the Nafion-PdNPs@SBA-15-PrEn/GCE has potential as an efficient and integrated sensor for methanol detection. Copyright © 2018 Elsevier Inc. All rights reserved.

  16. Catalytic Steam Reforming of Toluene as a Model Compound of Biomass Gasification Tar Using Ni-CeO2/SBA-15 Catalysts

    Directory of Open Access Journals (Sweden)

    Erik Dahlquist

    2013-07-01

    Full Text Available Nickel supported on SBA-15 doped with CeO2 catalysts (Ni-CeO2/SBA-15 was prepared, and used for steam reforming of toluene which was selected as a model compound of biomass gasification tar. A fixed-bed lab-scale set was designed and employed to evaluate the catalytic performances of the Ni-CeO2/SBA-15 catalysts. Experiments were performed to reveal the effects of several factors on the toluene conversion and product gas composition, including the reaction temperature, steam/carbon (S/C ratio, and CeO2 loading content. Moreover, the catalysts were subjected to analysis of their carbon contents after the steam reforming experiments, as well as to test the catalytic stability over a long experimental period. The results indicated that the Ni-CeO2/SBA-15 catalysts exhibited promising capabilities on the toluene conversion, anti-coke deposition and catalytic stability. The toluene conversion reached as high as 98.9% at steam reforming temperature of 850 °C and S/C ratio of 3 using the Ni-CeO2(3wt%/SBA-15 catalyst. Negligible coke formation was detected on the used catalyst. The gaseous products mainly consisted of H2 and CO, together with a little CO2 and CH4.

  17. Preparation of SBA-15-PAMAM as a Nano Adsorbent for Removal of Acid Red 266 from Aqueous Media: Batch Adsorption and Equilibrium Studies

    Directory of Open Access Journals (Sweden)

    Maryam Mirzaie

    2017-12-01

    Full Text Available The purpose of the present study was to increase the adsorption capacity of SBA-15 for acidic dyes. Ordered mesoporous silica SBA-15 was successfully synthesized and functionalized by polyamidoamine (PAMAM dendrimer to develop an efficient anionic dye adsorbent. The prepared materials were characterized by field emission scanning electron microscope (FE-SEM, Fourier transforms infrared spectroscope (FT-IR and N2 adsorption–desorption analysis. The study was concocted in the Science and Research Branch of Islamic Azad University of Tehran, Iran in 2016. The produced adsorbent (SBA-15-Den was applied for the removal of Acid Red 266 (AR266 from aqueous media. The effects of various operational parameters including solution pH, adsorbent dosage, contact time, and temperature on removal of AR266 using SBA-15-Den were investigated in batch adsorption mode. Within the optimum conditions, SBA-15-Den exhibited an excellent adsorptive capability of 1111.11 mg/g. Equilibrium data were best described by Langmuir model (R2 > 0.98 completely.

  18. School-based interventions for preventing HIV, sexually transmitted infections, and pregnancy in adolescents.

    Science.gov (United States)

    Mason-Jones, Amanda J; Sinclair, David; Mathews, Catherine; Kagee, Ashraf; Hillman, Alex; Lombard, Carl

    2016-11-08

    School-based sexual and reproductive health programmes are widely accepted as an approach to reducing high-risk sexual behaviour among adolescents. Many studies and systematic reviews have concentrated on measuring effects on knowledge or self-reported behaviour rather than biological outcomes, such as pregnancy or prevalence of sexually transmitted infections (STIs). To evaluate the effects of school-based sexual and reproductive health programmes on sexually transmitted infections (such as HIV, herpes simplex virus, and syphilis), and pregnancy among adolescents. We searched MEDLINE, Embase, and the Cochrane Central Register of Controlled Trials (CENTRAL) for published peer-reviewed journal articles; and ClinicalTrials.gov and the World Health Organization's (WHO) International Clinical Trials Registry Platform for prospective trials; AIDS Educaton and Global Information System (AEGIS) and National Library of Medicine (NLM) gateway for conference presentations; and the Centers for Disease Control and Prevention (CDC), UNAIDS, the WHO and the National Health Service (NHS) centre for Reviews and Dissemination (CRD) websites from 1990 to 7 April 2016. We handsearched the reference lists of all relevant papers. We included randomized controlled trials (RCTs), both individually randomized and cluster-randomized, that evaluated school-based programmes aimed at improving the sexual and reproductive health of adolescents. Two review authors independently assessed trials for inclusion, evaluated risk of bias, and extracted data. When appropriate, we obtained summary measures of treatment effect through a random-effects meta-analysis and we reported them using risk ratios (RR) with 95% confidence intervals (CIs). We assessed the certainty of the evidence using the GRADE approach. We included eight cluster-RCTs that enrolled 55,157 participants. Five trials were conducted in sub-Saharan Africa (Malawi, South Africa, Tanzania, Zimbabwe, and Kenya), one in Latin America

  19. School-based physical therapy services and student functional performance at school.

    Science.gov (United States)

    Mccoy, Sarah Westcott; Effgen, Susan K; Chiarello, Lisa A; Jeffries, Lynn M; Villasante Tezanos, Alejandro G

    2018-03-30

    We explored relationships of school-based physical therapy to standardized outcomes of students receiving physical therapy. Using a practice-based evidence research design, School Function Assessment (SFA) outcomes of 296 students with disabilities (mean age 7y 4mo [standard deviation 2y]; 166 males, 130 females), served by 109 physical therapists, were explored. After training, therapists completed 10 SFA scales on students at the beginning and end of the school year. Therapists collected detailed weekly data on services (activities, interventions, types, student participation) using the School-Physical Therapy Interventions for Pediatrics (S-PTIP) system. Stepwise linear regressions were used to investigate S-PTIP predictors of SFA outcomes. Predictors of SFA section outcomes varied in strength, with the coefficient of determination (R 2 ) for each outcome ranging from 0.107 to 0.326. Services that correlated positively with the SFA outcomes included mobility, sensory, motor learning, aerobic/conditioning, functional strengthening, playground access interventions, and higher student participation during therapy (standardized β=0.11-0.26). Services that correlated negatively with the SFA outcomes included providing services within student groups, within school activity, with students not in special education, during recreation activities, and with positioning, hands-on facilitation, sensory integration, orthoses, and equipment interventions (standardized β=-0.14 to -0.22). Consideration of outcomes is prudent to focus services. Overall results suggest we should emphasize active mobility practice by using motor learning interventions and engaging students within therapy sessions. No specific interventions predicted positively on all School Function Assessment (SFA) outcomes. Active movement practice seems related to overall better SFA outcomes. Active mobility practice improved SFA participation, mobility, recreation, and activities of daily living. Engaging

  20. Integrating Autism Care through a School-Based Intervention Model: A Pilot Study

    Directory of Open Access Journals (Sweden)

    Katherine Dang

    2017-10-01

    Full Text Available The purpose of this pilot study is to determine the feasibility of monitoring the progress of children with an autism spectrum disorder (ASD both in school and at home to promote a school-based integrated care model between parents, teachers, and medical providers. This is a prospective cohort study. To monitor progress, outcome measures were administered via an online platform developed for caregivers and teachers of children (n = 30 attending a school specializing in neurodevelopmental disorders and using an integrated medical and education program. Longitudinal analysis showed improvements in a novel scale, the Teacher Autism Progress Scale (TAPS, which was designed to measure key autism-related gains in a school environment (2.1-point improvement, p = 0.004, ES = 0.324. The TAPS showed a strong and statistically significant correlation, with improvement in aberrant behavior (r = −0.50; p = 0.008 and social responsiveness (r = −0.70; p < 0.001. The results also showed non-statistically significant improvements in aberrant behavior, social responsiveness, and quality of life over time at both school and home. To assess feasibility of ongoing progress measurement, we assessed missing data, which showed caregivers were more likely to miss surveys during summer. Results demonstrate the value and feasibility of online, longitudinal data collection in school to assist with individualized education planning and collaborative care for children with ASD. Lessons learned in this pilot will support school outcomes researchers in developing more efficacious, collaborative treatment plans between clinicians, caregivers, and teachers.

  1. Effects of School-Based Educational Interventions for Enhancing Adolescents Abilities in Critical Appraisal of Health Claims: A Systematic Review.

    Directory of Open Access Journals (Sweden)

    Lena V Nordheim

    Full Text Available Adolescents are frequent media users who access health claims from various sources. The plethora of conflicting, pseudo-scientific, and often misleading health claims in popular media makes critical appraisal of health claims an essential ability. Schools play an important role in educating youth to critically appraise health claims. The objective of this systematic review was to evaluate the effects of school-based educational interventions for enhancing adolescents' abilities in critically appraising health claims.We searched MEDLINE, Embase, PsycINFO, AMED, Cinahl, Teachers Reference Centre, LISTA, ERIC, Sociological Abstracts, Social Services Abstracts, The Cochrane Library, Science Citation Index Expanded, Social Sciences Citation Index, and sources of grey literature. Studies that evaluated school-based educational interventions to improve adolescents' critical appraisal ability for health claims through advancing the students' knowledge about science were included. Eligible study designs were randomised and non-randomised controlled trials, and interrupted time series. Two authors independently selected studies, extracted data, and assessed risk of bias in included studies. Due to heterogeneity in interventions and inadequate reporting of results, we performed a descriptive synthesis of studies. We used GRADE (Grading of Recommendations, Assessment, Development, and Evaluation to assess the certainty of the evidence.Eight studies were included: two compared different teaching modalities, while the others compared educational interventions to instruction as usual. Studies mostly reported positive short-term effects on critical appraisal-related knowledge and skills in favour of the educational interventions. However, the certainty of the evidence for all comparisons and outcomes was very low.Educational interventions in schools may have beneficial short-term effects on knowledge and skills relevant to the critical appraisal of health

  2. Effects of School-Based Educational Interventions for Enhancing Adolescents Abilities in Critical Appraisal of Health Claims: A Systematic Review.

    Science.gov (United States)

    Nordheim, Lena V; Gundersen, Malene W; Espehaug, Birgitte; Guttersrud, Øystein; Flottorp, Signe

    2016-01-01

    Adolescents are frequent media users who access health claims from various sources. The plethora of conflicting, pseudo-scientific, and often misleading health claims in popular media makes critical appraisal of health claims an essential ability. Schools play an important role in educating youth to critically appraise health claims. The objective of this systematic review was to evaluate the effects of school-based educational interventions for enhancing adolescents' abilities in critically appraising health claims. We searched MEDLINE, Embase, PsycINFO, AMED, Cinahl, Teachers Reference Centre, LISTA, ERIC, Sociological Abstracts, Social Services Abstracts, The Cochrane Library, Science Citation Index Expanded, Social Sciences Citation Index, and sources of grey literature. Studies that evaluated school-based educational interventions to improve adolescents' critical appraisal ability for health claims through advancing the students' knowledge about science were included. Eligible study designs were randomised and non-randomised controlled trials, and interrupted time series. Two authors independently selected studies, extracted data, and assessed risk of bias in included studies. Due to heterogeneity in interventions and inadequate reporting of results, we performed a descriptive synthesis of studies. We used GRADE (Grading of Recommendations, Assessment, Development, and Evaluation) to assess the certainty of the evidence. Eight studies were included: two compared different teaching modalities, while the others compared educational interventions to instruction as usual. Studies mostly reported positive short-term effects on critical appraisal-related knowledge and skills in favour of the educational interventions. However, the certainty of the evidence for all comparisons and outcomes was very low. Educational interventions in schools may have beneficial short-term effects on knowledge and skills relevant to the critical appraisal of health claims. The small

  3. Comparison of the Acidity of Heteropolyacids Encapsulated in or Impregnated on SBA-15

    Directory of Open Access Journals (Sweden)

    Pinto Teresa

    2016-03-01

    Full Text Available Heteropolyacids (HPA immobilized onto SBA-15 silica were prepared by two different ways using either impregnation or encapsulation methodologies. Two Keggin-type HPA, H3PW12O40 and H4SiW12O40 were considered in this study. The resulting hybrid materials were fully characterized by N2 adsorption-desorption isotherms, XRD, FT-IR, Raman, diffuse reflectance UV-Vis spectroscopies and 31P MAS NMR. All characterization methods showed that at room temperature the catalysts contained well-dispersed and intact Keggin units throughout the solid. The catalytic activity of these solids was investigated in the isomerization of n-hexane. The impregnated and encapsulated phosphotungstic catalysts performed similarly in catalysis showing that the amount of active sites was nearly the same in both catalysts. On the contrary, the tungstosilicic encapsulated material was completely inactive while its impregnated counterpart was even more active than the phosphotungstic derived catalysts. The acidity of the solids was measured by various methods: microcalorimetry of ammonia adsorption, ammonia desorption followed by Temperature Programmed Desorption (TPD and DRIFT/GC-MS and pyridine adsorption followed by infrared spectroscopy. Only pyridine adsorption and ammonia desorption followed by DRIFT/GC-MS agreed with the catalytic data. Ammonia adsorption followed by microcalorimetry was not able to differentiate between the four catalysts while the TPD experiments led to unreliable results, as not only the evolved ammonia but also other molecules such as water were taken into account in the measurements. The behavior difference between the encapsulated silico- and phosphotungstic acids was explained by a more pronounced encapsulation in the case of silicon.

  4. Synthesis of lithium superionic conductor by growth of a nanoglass within mesoporous silica SBA-15 template

    Science.gov (United States)

    Chatterjee, Soumi; Miah, Milon; Saha, Shyamal Kumar; Chakravorty, Dipankar

    2018-04-01

    Nanodimensional silica based glasses containing alkali ions have recently been grown using suitable templates. These have shown electrical properties drastically different from those of their bulk counterpart. We have synthesized silicophosphate glasses having lithium ions with concentrations of 15-35 mole% Li2O within mesoporous silica SBA-15 (Santa Barbara amorphous-15) comprising of pores of diameter ~5 nm. The nanoglasses are characterized by electrical conductivities 5-6 orders of magnitude higher than those of the corresponding bulk glasses. These properties are attributed to the presence of a larger free volume in the nanoglasses as compared to their bulk states. The nanocomposites with 35 mole% Li2O exhibit an electrical conductivity of ~3 × 10-4 S · cm-1 at around room temperature. The activation energy for Li+ ion migration has been estimated from the conductivity-temperature variation to be 0.078 eV. These nanocomposites are believed to be ideally suited for the fabrication of solid state lithium ion batteries. We have also explored the efficiency of silicophosphate glass powders as possible electrode materials. Glass of composition 70SiO2/30P2O5 was prepared by using Pluronic P-123 tri-block copolymer along with suitable precursor sols. Cyclic voltammetric and galvanostatic charge/discharge measurements were carried out on the samples prepared in combination with suitable conductive fillers using a two-electrode system. These exhibited a high specific capacitance of 356 F g-1 making them ideally suitable as electrode materials for making a lithium ion solid state battery system.

  5. Syngas Production from CO2 Reforming and CO2-steam Reforming of Methane over Ni/Ce-SBA-15 Catalyst

    Science.gov (United States)

    Tan, J. S.; Danh, H. T.; Singh, S.; Truong, Q. D.; Setiabudi, H. D.; Vo, D.-V. N.

    2017-06-01

    This study compares the catalytic performance of mesoporous 10 Ni/Ce-SBA-15 catalyst for CO2 reforming and CO2-steam reforming of methane reactions in syngas production. The catalytic performance of 10 Ni/Ce-SBA-15 catalyst for CO2 reforming and CO2-steam reforming of methane was evaluated in a temperature-controlled tubular fixed-bed reactor at stoichiometric feed composition, 1023 K and atmospheric pressure for 12 h on-stream with gas hourly space velocity (GHSV) of 36 L gcat -1 h-1. The 10 Ni/Ce-SBA-15 catalyst possessed a high specific BET surface area and average pore volume of 595.04 m2 g-1. The XRD measurement revealed the presence of NiO phase with crystallite dimension of about 13.60 nm whilst H2-TPR result indicates that NiO phase was completely reduced to metallic Ni0 phase at temperature beyond 800 K and the reduction temperature relied on different degrees of metal-support interaction associated with the location and size of NiO particles. The catalytic reactivity was significantly enhanced with increasing H2O/CO2 feed ratio. Interestingly, the H2/CO ratio for CO2-steam reforming of methane varied between 1 and 3 indicated the occurrence of parallel reactions, i.e., CH4 steam reforming giving a H2/CO of 3 whilst reverse water-gas shift (RWGS) reaction consuming H2 to produce CO gaseous product.

  6. Harnessing complexity: taking advantage of context and relationships in dissemination of school-based interventions.

    Science.gov (United States)

    Butler, Helen; Bowes, Glenn; Drew, Sarah; Glover, Sara; Godfrey, Celia; Patton, George; Trafford, Lea; Bond, Lyndal

    2010-03-01

    Schools and school systems are increasingly asked to use evidence-based strategies to promote the health and well-being of students. The dissemination of school-based health promotion research, however, offers particular challenges to conventional approaches to dissemination. Schools and education systems are multifaceted organizations that sit within constantly shifting broader contexts. This article argues that health promotion dissemination needs to be rethought for school communities as complex systems and that this requires understanding and harnessing the dynamic ecology of the sociopolitical context. In developing this argument, the authors draw on their experience of the dissemination process of a multilevel school-based intervention in a complex educational context. Building on this experience, they argue for the need to move beyond conventional dissemination strategies to a focus on active partnerships between developers and users of school-based intervention research and offer a conceptual tool for planning dissemination.

  7. School-based mentoring: A study of volunteer motivations and benefits

    Directory of Open Access Journals (Sweden)

    Paul CALDARELLA

    2010-03-01

    Full Text Available While research has been conducted concerning the effects of school-based mentoring on atrisk students, limited work has focused on the volunteer mentors. This study examined the motivations of adult volunteers and the benefits of their participation in a six-month,school-based mentoring program. A total of 31 volunteers completed adapted versions of the Volunteer Functions Inventory and a post-survey as part of a program in which they mentored at-risk elementary school students. Volunteers were more satisfied with theirmentoring experience when their perceived benefits matched their initial motivations, though this did not seem to impact their intentions to mentor again in the future. Volunteers’ motivations tended toward expressing important values or gaining greaterunderstanding, though some younger volunteers were also motivated to gain career-related experience. Implications for school-based mentoring programs are addressed.

  8. Heat storage properties of organic phase-change materials confined in the nanospace of mesoporous SBA-15 and CMK-3.

    Science.gov (United States)

    Kadoono, Tomosuke; Ogura, Masaru

    2014-03-28

    A novel type of material encapsulating phase-change materials (PCMs) is reported concerning their implication for use as thermal energy storage devices. The composites of siliceous SBA-15 or carbonaceous CMK-3 mesoporous assemblies and organic PCMs could be used to make leak-free devices that retain their capabilities over many thermal cycles for heat storage/release. A confinement effect was observed that alters the thermal properties of the encapsulated PCM, especially in CMK-3 without any similar effects in other carbon materials.

  9. The structure heterogeneity of silica mesopores of Sba-15 in respect to the pluronic 123 template concentration

    Science.gov (United States)

    Dhaneswara, D.; Fatriansyah, J. F.; Putranto, D. A.; Utami, S. A. A.; Delayori, F.

    2018-01-01

    The analysis of structure heterogeneity factor of silica mesoporous SBA-15 has been conducted. The structure factor has been found to be different for low and high concentration of Pluronic-123 template. The structure heterogeneity of high concentration of Pluronic-123 has been found less than 1 while for low concentration, the structure heterogeneity was found to be larger than 1. This indicates the dissimilarity of the structure and can be used as a probe to detect the formation of large mesopores. It also was found that the system exhibits type IV and H1 adsorption type which indicates the capillary condensation and interconnected pores.

  10. CO2 activation through silylimido and silylamido zirconium hydrides supported on N-donor chelating SBA15 surface ligand

    KAUST Repository

    Pasha, Fahran Ahmad

    2016-01-04

    Density functional theory calculations and 2D 1H-13C HETCOR solid state NMR spectroscopy prove that CO2 can probe, by its own reactivity, different types of N-donor surface ligands on SBA15-supported ZrIV hydrides: [(≡Si-O-)(≡Si-N=)[Zr]H] and [(≡Si-NH-)(≡Si-X-)[Zr]H2] (X = O or NH). Moreover, [(≡Si-O-)(≡Si-N=)[Zr]H] activates CO2 more efficiently than the other complexes and leads to a carbimato Zr formate.

  11. Evaluation of Antistigma Interventions With Sixth-Grade Students: A School-Based Field Experiment.

    Science.gov (United States)

    Painter, Kirstin; Phelan, Jo C; DuPont-Reyes, Melissa J; Barkin, Kay F; Villatoro, Alice P; Link, Bruce G

    2017-04-01

    School-based interventions for preadolescents provide the opportunity, in a ubiquitous institutional setting, to attack stigmatizing attitudes before they are firmly entrenched, and thus they may reduce mental illness stigma in the overall population. This study evaluated the effectiveness of classroom-based interventions in reducing stigma and increasing understanding of mental illness and positive attitudes toward treatment seeking among sixth-grade students. In an ethnically and racially diverse sample (N=721), 40% of participants were Latino, 26% were white, and 24% were African American; the mean age was 11.5. In a fully crossed design, classrooms from a school district in Texas were randomly assigned to receive all three, two, one, or none of the following interventions: a PowerPoint- and discussion-based curriculum, contact with two college students who described their experiences with mental illness, and exposure to antistigma printed materials. Standard and vignette-based quantitative measures of mental health knowledge and attitudes, social distance, and help-seeking attitudes were assessed pre- and postintervention. Printed materials had no significant effects on outcomes and were grouped with the control condition for analysis. For eight of 13 outcomes, the curriculum-only group reported significantly more positive outcomes than the control group; the largest between-group differences were for stigma awareness and action, recognition of mental illness in the vignettes, and positive orientation to treatment. The contact-alone group reported significantly more positive outcomes on three vignette-based measures. Results were most promising for a classroom-based curriculum that can be relatively easily disseminated to and delivered by teachers, offering the potential for broad application in the population.

  12. EFFECTS OF A SCHOOL-BASED INTERVENTION ON BMI AND MOTOR ABILITIES IN CHILDHOOD

    Directory of Open Access Journals (Sweden)

    Christine Graf

    2005-09-01

    Full Text Available Obesity in childhood is increasing worldwide. To combat overweight and obesity in childhood, the school-based Children's Health InterventionaL Trial (CHILT project combines health education and physical activity. This paper examines the effect of intervention on the body mass index (BMI and motor abilities after 20.8 ± 1.0 months in 12 randomly selected primary schools compared with 5 randomly selected control schools. The anthropometric data were assessed, BMI was calculated. Coordination was determined by lateral jumping and endurance performance by a 6-minute run. No difference in the prevalence of overweight and obesity was found between the intervention (IS and control schools (CS either at baseline or following intervention (each p > 0.05. The increase in the number of lateral jumps was significantly higher in the IS than in the CS (p < 0.001. For the 6-minute run the increase in distance run was significantly improved in IS (p = 0.020. All variables were controlled for gender and age. Overweight and obese children in both IS and CS produced significantly lower scores in coordination and endurance tasks than normal and underweight children during both examinations (each p < 0.001, adjusted for gender and age. Preventive intervention in primary schools offers an effective means to improve motor skills in childhood and to break through the vicious circle of physical inactivity - motor deficits - frustration - increasing inactivity possibly combined with an excess energy intake and weight gain. To prevent overweight and obesity these measures have to be intensified

  13. Mindfulness-based prevention for eating disorders: A school-based cluster randomized controlled study.

    Science.gov (United States)

    Atkinson, Melissa J; Wade, Tracey D

    2015-11-01

    Successful prevention of eating disorders represents an important goal due to damaging long-term impacts on health and well-being, modest treatment outcomes, and low treatment seeking among individuals at risk. Mindfulness-based approaches have received early support in the treatment of eating disorders, but have not been evaluated as a prevention strategy. This study aimed to assess the feasibility, acceptability, and efficacy of a novel mindfulness-based intervention for reducing the risk of eating disorders among adolescent females, under both optimal (trained facilitator) and task-shifted (non-expert facilitator) conditions. A school-based cluster randomized controlled trial was conducted in which 19 classes of adolescent girls (N = 347) were allocated to a three-session mindfulness-based intervention, dissonance-based intervention, or classes as usual control. A subset of classes (N = 156) receiving expert facilitation were analyzed separately as a proxy for delivery under optimal conditions. Task-shifted facilitation showed no significant intervention effects across outcomes. Under optimal facilitation, students receiving mindfulness demonstrated significant reductions in weight and shape concern, dietary restraint, thin-ideal internalization, eating disorder symptoms, and psychosocial impairment relative to control by 6-month follow-up. Students receiving dissonance showed significant reductions in socio-cultural pressures. There were no statistically significant differences between the two interventions. Moderate intervention acceptability was reported by both students and teaching staff. Findings show promise for the application of mindfulness in the prevention of eating disorders; however, further work is required to increase both impact and acceptability, and to enable successful outcomes when delivered by less expert providers. © 2015 Wiley Periodicals, Inc.

  14. Effect of a school-based oral health education programme in Wuhan City, Peoples Republic of China

    DEFF Research Database (Denmark)

    Petersen, Poul Erik; Peng, Bin; Tai, Baojun

    2004-01-01

    OBJECTIVES: To assess oral health outcomes of a school-based oral health education (OHE) programme on children, mothers and schoolteachers in China, and to evaluate the methods applied and materials used. DESIGN: The WHO Health Promoting Schools Project applied to primary schoolchildren in 3...... in experimental schools adopted regular oral health behaviour such as toothbrushing, recent dental visits, use of fluoride toothpaste, with less frequent consumption of cakes/biscuits compared to controls. In experimental schools, mothers showed significant beneficial oral health developments, while teachers...... showed higher oral health knowledge and more positive attitudes, also being satisfied with training workshops, methods applied, materials used and involvement with children in OHE. CONCLUSIONS: The programme had positive effects on gingival bleeding score and oral health behaviour of children...

  15. Effectiveness of a Universal School-Based Social Competence Program: The Role of Child Characteristics and Economic Factors

    Directory of Open Access Journals (Sweden)

    Tina Malti

    2012-12-01

    Full Text Available An evaluation of the effectiveness of a school-based social competence curriculum PATHS (Promoting Alternative Thinking Strategies on teacher-rated aggressive behavior, ADHD, and prosocial behavior in children. The one-year prevention program was administered to children in 28 of 56 Swiss elementary schools (N = 1,675. Outcomes were assessed at pretest and posttest with a follow-up 2 years later. Moderator interactions involving baseline child characteristics and economic factors were tested. There were significant treatment effects for ADHD/impulsivity and aggression at the follow-up. Baseline development variables predicted higher prosocial behavior as well as lower aggressive behavior and ADHD at the follow-up. Economic risk factors predicted poor behavior outcomes at the follow-up. Development variables moderated the impact of PATHS on ADHD and aggression at the follow-up. However, for most outcomes, no main effects or moderation of treatment effects were found.

  16. SBA-15 mesoporous silica free-standing thin films containing copper ions bounded via propyl phosphonate units - preparation and characterization

    Energy Technology Data Exchange (ETDEWEB)

    Laskowski, Lukasz, E-mail: lukasz.laskowski@kik.pcz.pl [Czestochowa University of Technology, Institute of Computational Intelligence, Unit of Microelectronics and Nanotechnology, Al. Armii Krajowej 36, 42–201 Czestochowa (Poland); Laskowska, Magdalena, E-mail: magdalena.laskowska@onet.pl [H. Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, 31-342 Krakow, ul. Radzikowskiego 152 (Poland); Jelonkiewicz, Jerzy, E-mail: jerzy.jelonkiewicz@kik.pcz.pl [Czestochowa University of Technology, Institute of Computational Intelligence, Unit of Microelectronics and Nanotechnology, Al. Armii Krajowej 36, 42–201 Czestochowa (Poland); Dulski, Mateusz, E-mail: mateusz.dulski@us.edu.pl [University of Silesia, Faculty of Computer Science and Materials Science, Institute of Materials Science, Silesian Center for Education and Interdisciplinary Research, ul. 75 Pułku Piechoty 1A, 41–500 Chorzów (Poland); Wojtyniak, Marcin, E-mail: marcin.wojtyniak@us.edu.pl [University of Silesia, Institute of Physics, Silesian Center for Education and Interdisciplinary Research, ul. 75 Pułku Piechoty 1A, 41–500 Chorzów (Poland); Fitta, Magdalena, E-mail: magdalena.fitta@ifj.edu.pl [H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 31–342 Krakow, ul. Radzikowskiego 152 (Poland); Balanda, Maria, E-mail: Maria.Balanda@ifj.edu.pl [H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, 31–342 Krakow, ul. Radzikowskiego 152 (Poland)

    2016-09-15

    The SBA-15 silica thin films containing copper ions anchored inside channels via propyl phosphonate groups are investigated. Such materials were prepared in the form of thin films, with hexagonally arranged pores, laying rectilinear to the substrate surface. However, in the case of our thin films, their free standing form allowed for additional research possibilities, that are not obtainable for typical thin films on a substrate. The structural properties of the samples were investigated by X-ray reflectometry, atomic force microscopy (AFM) and transmission electron microscopy (TEM). The molecular structure was examined by Raman spectroscopy supported by numerical simulations. Magnetic measurements (SQUID magnetometry and EPR spectroscopy) showed weak antiferromagnetic interactions between active units inside silica channels. Consequently, the pores arrangement was determined and the process of copper ions anchoring by propyl phosphonate groups was verified in unambiguous way. Moreover, the type of interactions between magnetic atoms was determined. - Highlights: • Functionalized free-standing SBA-15 thin films were synthesized for a first time. • Thin films synthesis procedure was described in details. • Structural properties of the films were thoroughly investigated and presented. • Magnetic properties of the novel material was investigated and presented.

  17. Jet-Fuel Range Hydrocarbons from Biomass-Derived Sorbitol over Ni-HZSM-5/SBA-15 Catalyst

    Directory of Open Access Journals (Sweden)

    Yujing Weng

    2015-12-01

    Full Text Available Aromatics and cyclic-hydrocarbons are the significant components of jet fuel with high energy-density. However, conventional technologies for bio-fuel production cannot produce these products without further aromatization and isomerization. In this work, renewable liquid fuel with high content of aromatics and cyclic-hydrocarbons was obtained through aqueous catalytic conversion of biomass sorbitol over Ni-HZSM-5/SBA-15 catalyst. Texture characteristics of the catalyst were determined by physisorption of N2, which indicated its bimodal pore structures were microporous (HZSM-5, pore width: 0.56 nm and mesoporous (SBA-15, pore width: 8 nm. The surface acidity included weak and strong acid sites, predominantly Lewis type, and was further confirmed by the NH3-TPD and Py-IR analysis. The catalytic performances were tested in a fixed-bed reactor under the conditions of 593 K, WHSV of 0.75 h−1, GHSV of 2500 h−1 and 4.0 MPa of hydrogen pressure, whereby oil yield of 40.4 wt. % with aromatics and cyclic-hydrocarbons content of 80.0% was obtained.

  18. Hydrogen Production from Cyclic Chemical Looping Steam Methane Reforming over Yttrium Promoted Ni/SBA-16 Oxygen Carrier

    Directory of Open Access Journals (Sweden)

    Sanaz Daneshmand-Jahromi

    2017-09-01

    Full Text Available In this work, the modification of Ni/SBA-16 oxygen carrier (OC with yttrium promoter is investigated. The yttrium promoted Ni-based oxygen carrier was synthesized via co-impregnation method and applied in chemical looping steam methane reforming (CL-SMR process, which is used for the production of clean energy carrier. The reaction temperature (500–750 °C, Y loading (2.5–7.4 wt. %, steam/carbon molar ratio (1–5, Ni loading (10–30 wt. % and life time of OCs over 16 cycles at 650 °C were studied to investigate and optimize the structure of OC and process temperature with maximizing average methane conversion and hydrogen production yield. The synthesized OCs were characterized by multiples techniques. The results of X-ray powder diffraction (XRD and energy dispersive X-ray spectroscopy (EDX of reacted OCs showed that the presence of Y particles on the surface of OCs reduces the coke formation. The smaller NiO species were found for the yttrium promoted OC and therefore the distribution of Ni particles was improved. The reduction-oxidation (redox results revealed that 25Ni-2.5Y/SBA-16 OC has the highest catalytic activity of about 99.83% average CH4 conversion and 85.34% H2 production yield at reduction temperature of 650 °C with the steam to carbon molar ratio of 2.

  19. Does the success of a school-based HPV vaccine programme depend on teachers' knowledge and religion? -- A survey in a multicultural society.

    Science.gov (United States)

    Ling, Woo Yin; Razali, Sharina Mohd; Ren, Chong Kuoh; Omar, Siti Zawiah

    2012-01-01

    Organized introduction of prophylactic human papillomavirus (HPV) vaccination can reduce the burden of cervical cancer in developing countries. One of the most effective ways is through a national school-based program. Information on teachers is therefore important since this group may have a disproportionate influence in the success of any implementation. To assess teachers' knowledge and perception of HPV, cervical cancer and HPV vaccine prior to commencing a school-based HPV vaccination program in a multiethnic, predominantly Muslim country. Factors associated with acceptability of the vaccine were identified. A bilingual questionnaire was applied to 1,500 secondary school teachers from 20 urban schools in Malaysia. Data collected were analyzed using SPSS version 17. 1,166 questionnaires were returned. From this group, 46.1% had never heard of HPV while 50.9% had never had a pap smear. However, 73.8% have heard of the HPV vaccine with 75% agreeing to have it. 96% considered themselves religious with 79.8% agreeing to have the vaccine. A national school-based HPV immunization program can be implemented effectively in a multiethnic, cultural and religious country despite limited knowledge of HPV-related pathology among teachers. In addition, the perception that religion has a negative influence on such a program is unwarranted.

  20. A systematic review of the effectiveness of school-based obesity prevention programmes for First Nations, Inuit and Métis youth in Canada.

    Science.gov (United States)

    Godin, K; Leatherdale, S T; Elton-Marshall, T

    2015-06-01

    First Nations, Inuit and Métis (FNIM) youth are disproportionately affected by obesity and represent known a high-risk group in Canada. School-based prevention programmes may have the potential to effectively influence obesity-related health behaviours (i.e. healthy eating and physical activity) among this population. We conducted a systematic review of nine electronic databases (2003-2014) to identify studies that describe school-based programmes that have been developed to improve obesity-related health behaviours and outcomes among FNIM youth in Canada. The objectives of this review were to identify and evaluate the effectiveness of these programmes and assess the strength of the methodologies used to evaluate them. Fifteen studies, representing seven distinct interventions, met our inclusion criteria. The majority of these programmes did not result in significant improvements in outcomes related to obesity, healthy eating, or physical activity among FNIM youth. The studies varied in design rigour and use of evaluation activities. The lack of literature on effective school-based programmes for FNIM youth in Canada that target obesity-related outcomes highlights a priority area for future intervention development, evaluation and dissemination within the peer-reviewed literature. Further research is needed on interventions involving Métis and Inuit youth, secondary school-aged FNIM youth and FNIM youth living in urban settings. © 2015 World Obesity.

  1. Lifetime use of illicit drugs and associated factors among Brazilian schoolchildren, National Adolescent School-based Health Survey (PeNSE 2012)

    OpenAIRE

    Rogério Lessa Horta; Bernardo Lessa Horta; Andre Wallace Nery da Costa; Rogério Ruscitto do Prado; Maryane Oliveira-Campos; Deborah Carvalho Malta

    2014-01-01

    OBJECTIVE: This study aimed at describing the prevalence of illicit drug use among 9th grade students in the morning period of public and private schools in Brazil, and assessing associated factors. METHOD: The Brazilian survey PeNSE (National Adolescent School-based Health Survey) 2012 evaluated a representative sample of 9th grade students in the morning period, in Brazil and its five regions. The use of illicit drugs at least once in life was assessed for the most commonly used drugs,...

  2. School-Based Management. School Management Digest, Series 1, No. 23.

    Science.gov (United States)

    Lindelow, John

    Many educators advocate school-based management, a method of decentralization wherein the school, instead of the district office, becomes the primary unit of educational decision-making. This shift is part of American education's long-term oscillation between administrative centralization and decentralization. Centralization, say its critics, has…

  3. Exploring the use of role play in a school-based programme to ...

    African Journals Online (AJOL)

    Exploring the use of role play in a school-based programme to reduce teenage pregnancy. ... South African Journal of Education ... study was undertaken of the use of role plays by Grade 8 learners, at eight urban and rural KwaZulu-Natal high schools, as part of a programme to reduce the prevalence of teenage pregnancy.

  4. The Complementary Roles of the School Nurse and School Based Health Centers. Position Statement

    Science.gov (United States)

    Ondeck, Lynnette; Combe, Laurie; Baszler, Rita; Wright, Janet

    2015-01-01

    It is the position of the National Association of School Nurses (NASN) that the unique combination of school nursing services and school-based health centers (SBHCs) facilitate positive health outcomes for students. The registered professional school nurse (hereinafter referred to as school nurse) is responsible for management of the daily health…

  5. School-Based Health Clinics: An Analysis of the Johns Hopkins Study. Research Developments.

    Science.gov (United States)

    Demsko, Tobin W.

    School-based health clinics, adolescent pregnancy prevention programs offering comprehensive health services, represent the latest initiative to reduce the incidence of teenage pregnancy. Researchers at Johns Hopkins University designed and administered a pregnancy prevention program which offered sexuality education and family planning services…

  6. Use of Language Sample Analysis by School-Based SLPs: Results of a Nationwide Survey

    Science.gov (United States)

    Pavelko, Stacey L.; Owens, Robert E., Jr.; Ireland, Marie; Hahs-Vaughn, Debbie L.

    2016-01-01

    Purpose: This article examines use of language sample analysis (LSA) by school-based speech-language pathologists (SLPs), including characteristics of language samples, methods of transcription and analysis, barriers to LSA use, and factors affecting LSA use, such as American Speech-Language-Hearing Association certification, number of years'…

  7. Students' learning processes during school-based learning and workplace learning in vocational education : a review

    NARCIS (Netherlands)

    Dr. Harmen Schaap; Dr. Liesbeth Baartman; Prof.Dr. Elly de Bruijn

    2012-01-01

    This article reviews 24 articles in order to get a structured view on student's learning processes when dealing with a combination of school-based learning and workplace learning in vocational education. It focuses on six main themes: students' expertise development, students' learning styles,

  8. Promoting the Role of Occupational Therapy in School-Based Collaboration: Outcome Project

    Science.gov (United States)

    Christner, Andrea

    2015-01-01

    This evidence-based project provided a professional development opportunity for educators to enhance the awareness of school-based occupational therapy and promote a collaborative approach when supporting student participation in daily learning tasks. Through asynchronous web-based delivery, participants viewed five narrated PowerPoint…

  9. Dysphagia Management: A Survey of School-Based Speech-Language Pathologists in Vermont

    Science.gov (United States)

    Hutchins, Tiffany L.; Gerety, Katherine W.; Mulligan, Moira

    2011-01-01

    Purpose: This study (a) gathered information about the kinds of dysphagia management services school-based speech-language pathologists (SLPs) provide, (b) examined the attitudes of SLPs related to dysphagia management, (c) compared the responses of SLPs on the basis of their experience working in a medical setting, and (d) investigated the…

  10. Grade Level and Gender Differences in a School-Based Reading Tutoring Program

    Science.gov (United States)

    Chang, Sau Hou

    2011-01-01

    The purpose of the present study is to investigate the grade level and gender differences in a school-based reading tutoring program. The treatment group included 10 first-grade and 12 second-grade struggling readers, and the control group included 41 first-grade and 63 second-grade nonstruggling readers. The tutors were teacher candidates in an…

  11. School-Based BMI and Body Composition Screening and Parent Notification in California: Methods and Messages

    Science.gov (United States)

    Madsen, Kristine A.; Linchey, Jennifer

    2012-01-01

    Background: School-based body mass index (BMI) or body composition screening is increasing, but little is known about the process of parent notification. Since 2001, California has required annual screening of body composition via the FITNESSGRAM, with optional notification. This study sought to identify the prevalence of parental notification…

  12. Associations between Three School-Based Measures of Health: Is BMI Enough?

    Science.gov (United States)

    Morgan, Emily H.; Houser, Robert F.; Au, Lauren E.; Sacheck, Jennifer M.

    2013-01-01

    School-based body mass index (BMI) notification programs are often used to raise parental awareness of childhood overweight and obesity, but how BMI results are associated with physical fitness and diet is less clear. This study examined the relationship between BMI, fitness, and diet quality in a diverse sample of urban schoolchildren…

  13. A School-Based Enterprise: The Saint Pauls, North Carolina Experience.

    Science.gov (United States)

    Paquin, Thomas F.

    1991-01-01

    The superintendent of Saint Pauls Schools describes how educators, community leaders, businesspersons, and high school students worked together to develop the Way Off Broadway Deli, a successful school-based enterprise providing experiential education in entrepreneurship and small business management, as well as student employment and local…

  14. Leadership for School-Based Teacher Professional Development: The Experience of a Chinese Preschool

    Science.gov (United States)

    He, Pan; Ho, Dora

    2017-01-01

    In recent years, the role of school principals in providing leadership, and the impact of that leadership in promoting teacher professional development for building school capacity has attracted increasing attention worldwide. The study described in this paper explores the practices of leadership for promoting school-based teacher professional…

  15. The Need for Transformational Leadership in Singapore's School-Based Reform

    Science.gov (United States)

    Retna, Kala S.; Ng, Pak Tee

    2009-01-01

    In Singapore, "decentralization" and "school-based reforms" are key words within the current education reform agenda. This article argues that a key success factor in this agenda is transformational leadership in school. With more autonomy given to the school, transformational leadership at the school level will facilitate the…

  16. Testing Causal Impacts of a School-Based SEL Intervention Using Instrumental Variable Techniques

    Science.gov (United States)

    Torrente, Catalina; Nathanson, Lori; Rivers, Susan; Brackett, Marc

    2015-01-01

    Children's social-emotional skills, such as conflict resolution and emotion regulation, have been linked to a number of highly regarded academic and social outcomes. The current study presents preliminary results from a causal test of the theory of change of RULER, a universal school-based approach to social and emotional learning (SEL).…

  17. Undermatched? School-Based Linguistic Status, College Going, and the Immigrant Advantage

    Science.gov (United States)

    Callahan, Rebecca M.; Humphries, Melissa H.

    2016-01-01

    Considerable research investigates the immigrant advantage--the academic benefit first- and second-generation students experience relative to native-born peers. However, little work examines how school-based linguistic status may influence this advantage. Contradictory patterns exist: Research identifies both an immigrant advantage and a language…

  18. The effect of a school-based outdoor education program on Visual ...

    African Journals Online (AJOL)

    The aim of this research is to determine the effect of an education programme developed based on the school-based outdoor education approach on the academic achievement of visual arts teachers, as well as their self-efficacy beliefs for using museums and the natural environment. The aim is likewise to explore the ...

  19. A School-Based Program for Overweight and Obese Adolescents: A Randomized Controlled Trial

    Science.gov (United States)

    Pbert, Lori; Druker, Susan; Barton, Bruce; Schneider, Kristin L.; Olendzki, Barbara; Gapinski, Mary A.; Kurtz, Stephen; Osganian, Stavroula

    2016-01-01

    Background: Given the dramatic increase in adolescent overweight and obesity, models are needed for implementing weight management treatment through readily accessible venues. We evaluated the acceptability and efficacy of a school-based intervention consisting of school nurse-delivered counseling and an afterschool exercise program in improving…

  20. School-Based Interventions for Overweight and Obesity in Minority School Children

    Science.gov (United States)

    Johnson, Teresa; Weed, L. Diane; Touger-Decker, Riva

    2012-01-01

    The prevalence of childhood overweight and obesity in the United States has resulted in a number of school-based health interventions. This article provides a review of research that addressed childhood overweight and obesity in minority, U.S. elementary schools. All studies reported some benefits in health behaviors and/or anthropometric…

  1. Decentralization and Participatory Decision-Making: Implementing School-Based Management in the Abbott Districts.

    Science.gov (United States)

    Walker, Elaine M.

    2000-01-01

    This study examined issues faced during implementation of school-based management (SBM) in New Jersey's special needs or Abbott districts, using a literature review, surveys of K-12 schools, and focus groups with central office administrators. The study examined forms of SBM, team operations, local autonomy versus state power, skills required to…

  2. The Impact of Violence Prevention Programs on School Based Violent Behaviors

    Science.gov (United States)

    Reed-Reynolds, Shelly

    2011-01-01

    This dissertation study focused on the potential effect that various violence prevention program strategies implemented within the k-12 school setting have on the frequency of school based violent behaviors. The 2005-06 and 2003-04 School Survey on Crime and Safety (SSOCS:2006 & SSOCS:2004) was utilized as the secondary data source for this…

  3. An Alternative Collaborative Supervision Practice between University-Based Teachers and School-Based Teachers

    Science.gov (United States)

    Steele, Annfrid R.

    2017-01-01

    There is an increased focus in teacher education on research-based teaching as a means to develop a more research-based professional knowledge. However, research from several Western countries shows that neither school-based nor university-based teachers are familiar with how to integrate research-based knowledge in professional teacher practice.…

  4. Promoting Self-Regulation through School-Based Martial Arts Training

    Science.gov (United States)

    Lakes, Kimberley D.; Hoyt, William T.

    2004-01-01

    The impact of school-based Tae Kwon Do training on self-regulatory abilities was examined. A self-regulation framework including three domains (cognitive, affective, and physical) was presented. Children (N = 207) from kindergarten through Grade 5 were randomly assigned by homeroom class to either the intervention (martial arts) group or a…

  5. Strong Teens: A School-Based Small Group Experience for African American Males

    Science.gov (United States)

    White, Nathan J.; Rayle, Andrea Dixon

    2007-01-01

    This article describes the school-based, small group adaptation of the existing Strong Teens Curriculum (STC) for African American male adolescents in high schools. The STC was created to equip adolescents with skills that promote more effective social interaction and enhance personal emotional and psychological wellness. The authors present a…

  6. Participation Patterns of Korean Adolescents in School-Based Career Exploration Activities

    Science.gov (United States)

    Rojewski, Jay W.; Lee, In Heok; Hill, Roger B.

    2014-01-01

    Variations in the school-based career exploration activities of Korean high school students were examined. Data represented 5,227 Korean adolescents in Grade 11 contained in the Korean Education Longitudinal Study of 2005, a nationally representative longitudinal database administered by the Korean Educational Development Institute. Latent class…

  7. Sustaining School-Based Asthma Interventions through Policy and Practice Change

    Science.gov (United States)

    Carpenter, Laurie M.; Lachance, Laurie; Wilkin, Margaret; Clark, Noreen M.

    2013-01-01

    Background: Schools are an ideal setting for implementation of asthma interventions for children; however, sustaining school-based programs can be challenging. This study illustrates policy and practice changes brought about through the Childhood Asthma Linkages in Missouri (CALM) program to sustain such programs. Methods: Researchers analyzed…

  8. Stacked Deck: An Effective, School-Based Program for the Prevention of Problem Gambling

    Science.gov (United States)

    Williams, Robert J.; Wood, Robert T.; Currie, Shawn R.

    2010-01-01

    School-based prevention programs are an important component of problem gambling prevention, but empirically effective programs are lacking. Stacked Deck is a set of 5-6 interactive lessons that teach about the history of gambling; the true odds and "house edge"; gambling fallacies; signs, risk factors, and causes of problem gambling; and…

  9. A Meta-Analytic Review of School-Based Prevention for Cannabis Use

    Science.gov (United States)

    Porath-Waller, Amy J.; Beasley, Erin; Beirness, Douglas J.

    2010-01-01

    This investigation used meta-analytic techniques to evaluate the effectiveness of school-based prevention programming in reducing cannabis use among youth aged 12 to 19. It summarized the results from 15 studies published in peer-reviewed journals since 1999 and identified features that influenced program effectiveness. The results from the set of…

  10. Sociocultural Experiences of Bulimic and Non-Bulimic Adolescents in a School-Based Chinese Sample

    Science.gov (United States)

    Jackson, Todd; Chen, Hong

    2010-01-01

    From a large school-based sample (N = 3,084), 49 Mainland Chinese adolescents (31 girls, 18 boys) who endorsed all DSM-IV criteria for bulimia nervosa (BN) or sub-threshold BN and 49 matched controls (31 girls, 18 boys) completed measures of demographics and sociocultural experiences related to body image. Compared to less symptomatic peers, those…

  11. Practice Patterns of School-Based Occupational Therapists Targeting Handwriting: A Knowledge-to-Practice Gap

    Science.gov (United States)

    Cramm, Heidi; Egan, Mary

    2015-01-01

    Poor handwriting is a common reason for referral to school-based occupational therapy. A survey was used to explore the extent to which current practice patterns in Ontario, Canada, align with evidence on effective intervention for handwriting. Knowledge-to-practice gaps were identified related to focus on performance components versus…

  12. Brief Instrumental School-Based Mentoring for Middle School Students: Theory and Impact

    Science.gov (United States)

    McQuillin, Samuel D.; Lyons, Michael D.

    2016-01-01

    This study evaluated the efficacy of an intentionally brief school-based mentoring program. This academic goal-focused mentoring program was developed through a series of iterative randomized controlled trials, and is informed by research in social cognitive theory, cognitive dissonance theory, motivational interviewing, and research in academic…

  13. A School-Based Mindfulness Intervention for Urban Youth: Exploring Moderators of Intervention Effects

    Science.gov (United States)

    Gould, Laura Feagans; Dariotis, Jacinda K.; Mendelson, Tamar; Greenberg, Mark. T.

    2012-01-01

    This study examines gender, grade-level, and baseline depressive symptoms as potential moderators of a school-based mindfulness intervention's impact on the self-regulatory outcomes of urban youth. Ninety-seven participants from four urban public schools were randomly assigned to an intervention or wait-list control condition. Fourth and fifth…

  14. Body Talk: A School-based Group Intervention for Working with Disordered Eating Behaviors.

    Science.gov (United States)

    Daigneault, Susan Dahlgren

    2000-01-01

    Describes a school-based group intervention designed to address issues of body image, self-esteem, weight, and eating disturbances. This 10-session group provides female high school students with opportunities to explore their concerns about relationships, appearance, and what it means to be female. Provides descriptions of narrative techniques…

  15. A Meta-Analysis of School-Based Bullying Prevention Programs' Effects on Bystander Intervention Behavior

    Science.gov (United States)

    Polanin, Joshua R.; Espelage, Dorothy L.; Pigott, Therese D.

    2012-01-01

    This meta-analysis synthesized bullying prevention programs' effectiveness at increasing bystander intervention in bullying situations. Evidence from 12 school-based programs, involving 12,874 students, indicated that overall the programs were successful (Hedges's g = 0.20, 95% confidence interval [CI] = 0.11 to 0.29, p = 0.001), with larger…

  16. African American Fathers' Involvement in Their Children's School-Based Lives

    Science.gov (United States)

    Abel, Yolanda

    2012-01-01

    This research investigated African American fathers' involvement in the school-based lives of their elementary-aged children using the Hoover-Dempsey and Sandler model of parent involvement and Epstein's framework of involvement. Questionnaires were administered to 101 African American males in the mid-Atlantic region of the United States.…

  17. Evaluating a School-Based Day Treatment Program for Students with Challenging Behaviors

    Science.gov (United States)

    Hickman, Antoine Lewis

    2014-01-01

    Jade County Public Schools has provided school-based therapeutic day treatment in its public schools for more than 10 years. This program was adopted by the school system to provide an intervention in the school and classroom to address the challenging behaviors of students with emotional and behavioral disorders. Currently, three human services…

  18. A Conceptual Model for School-Based Management Operation and Quality Assurance in Nigerian Secondary Schools

    Science.gov (United States)

    Ayeni, Adeolu Joshua; Ibukun, Williams Olusola

    2013-01-01

    This paper examined the School-Based Management Committee's (SBMC) involvement and effectiveness in school governance, curriculum implementation and students' learning outcomes in Nigerian secondary schools; the major challenges facing effective operation of SBMCs were identified as low capacity of key members of the SBMCs; poor attendance of…

  19. Adolescents' responses to a school-based prevention program promoting healthy eating at school

    NARCIS (Netherlands)

    Hermans, R.C.J.; Bruin, H. de; Larsen, J.K.; Mensink, F.; Hoek, A.C.

    2017-01-01

    Background: To improve the effectiveness of school-based obesity prevention programs, it is essential to understand the views and behaviors of the target group. The present study aimed to get a better understanding of adolescents' food and health perceptions and their willingness to be involved in a

  20. Leadership in school-based management: a case study in selected ...

    African Journals Online (AJOL)

    This article, derived from a qualitative case study undertaken among a number of divergent secondary schools in Gauteng province, is an attempt to conceptualise the important and pivotal leadership role of the school principal in ensuring school improvement via effective school-based management in South African ...