WorldWideScience

Sample records for black educational activism

  1. "What's Going On?": A Critical Race Theory Perspective on Black Lives Matter and Activism in Education

    Science.gov (United States)

    Dixson, Adrienne D.

    2018-01-01

    This article explores activism, education, and the #BlackLivesMatter movement. Using critical race theory (CRT), I analyze what this emergence of primarily youth-led activism means in the context of decades of neoliberal education reform. I raise specific questions about how youth-led activism, which has its genesis in and is largely shaped by…

  2. Active Solidarity: Centering the Demands and Vision of the Black Lives Matter Movement in Teacher Education

    Science.gov (United States)

    Mayorga, Edwin; Picower, Bree

    2018-01-01

    In the era of Black Lives Matter (#BLM), urban teacher education does not exist in isolation. The White supremacist, neoliberal context that impacts all aspects of Black lives also serves to support antiblackness within the structures of teacher education. In this article, the authors, who are grounded in a race radical analytical and political…

  3. Neoliberalism and Black Education.

    Science.gov (United States)

    Rich, John Martin

    1986-01-01

    In contrast to traditional liberals, neoliberals share a commitment to greater economic risk-taking, support for entrepreneurism, a new industrial policy, and a different Federal Role. While New Deal and Great Society liberalism may have been more favorable to blacks, perhaps more balanced and equitable policies for blacks could be developed if…

  4. Ninth Annual "Brown" Lecture in Education Research: Black Educators as Educational Advocates in the Decades before "Brown v. Board of Education"

    Science.gov (United States)

    Walker, Vanessa Siddle

    2013-01-01

    This research sought to extend the historical record of advocacy for Black education by exploring the role of Black educators in the decades before the "Brown v. Board of Education" decision. It addressed (a) the ways the educators were involved in advocating for Black schools and (b) the relationship of the activities to the more…

  5. Black Student Retention in Higher Education.

    Science.gov (United States)

    Lang, Marvel, Ed.; Ford, Clinita A., Ed.

    This collection focuses on problems in the recruitment, enrollment and retention of Blacks in higher education in America. The following chapters are provided: "The Black Student Retention Problem in Higher Education: Some Introductory Perspectives" (Marvel Lang); "Early Acceptance and Institutional Linkages in a Model Program of Recruitment,…

  6. Postsecondary Educational Attainment among Whites and Blacks.

    Science.gov (United States)

    Wolfle, Lee M.

    Interracial differences in the educational attainment process between whites and blacks were examined, using Joreskog and Sorbom's (1981) general method for the analysis of covariance structures. The basic model of educational attainment considers education to be a function of father's occupational status and education, mother's education,…

  7. Neighbourhood food, physical activity, and educational environments and black/white disparities in obesity: a complex systems simulation analysis.

    Science.gov (United States)

    Orr, Mark G; Kaplan, George A; Galea, Sandro

    2016-09-01

    Multiple approaches that can contribute to reducing obesity have been proposed. These policies may share overlapping pathways, and may have unanticipated consequences, creating considerable complexity. Aiming to illuminate the use of agent-based models to explore the consequences of key policies, this paper simulates the effects of increasing neighbourhood availability of good food stores, physical activity infrastructure and higher school quality on the reduction of black/white disparities in body mass index (BMI) in the USA. We used an agent-based model, with parameters derived from the empirical literature, which included individual and neighbourhood characteristics over the life course as determinants of behaviours thought to impact BMI. We systematically varied the strength of the 3 policy interventions, examining the impact of 125 different policy scenarios on black/white BMI disparities. In the absence of any of these policies, black/white BMI disparities generally increased over time. However, we found that some combinations of these policies resulted in reductions in BMI, yielding decreases in the black/white BMI disparity as large as a 90%. Within the structure of relationships captured in this simulation model, there is support for the further use of agent-based simulation models to explore upstream policies as plausible candidates for the reduction of black/white disparities in BMI. These results highlight the potential insights into important public health problems, such as obesity, that can come from uniting the systems science approach with policy analysis. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

  8. Black Teenage Pregnancy: A Challenge to Educators.

    Science.gov (United States)

    Ladner, Joyce A.

    1988-01-01

    Analyzes the impact of teen pregnancy on the education of Black adolescents. Examines the scope, social context, and consequences of the problem. Notes that many of the successful teenage pregnancy prevention programs have been undertaken by Black organizations as federal support has decreased. (FMW)

  9. "Be Real Black for Me": Imagining BlackCrit in Education

    Science.gov (United States)

    Dumas, Michael J.; ross, kihana miraya

    2016-01-01

    The authors put forward a theorization of a Black Critical Theory, or what might be called BlackCrit, within, and in response to, Critical Race Theory, and then outline ways that BlackCrit in education helps us to more incisively analyze how the specificity of (anti)blackness matters in explaining how Black bodies become marginalized, disregarded,…

  10. Black Teenage Pregnancy: A Challenge for Educators.

    Science.gov (United States)

    Ladner, Joyce A.

    1987-01-01

    Analyzes the impact of teen pregnancy on the education of Black adolescents. Examines the scope of the problem, its social context, and its consequences. Discusses several effective approaches to teenage pregnancy prevention, including sex/family life education, school-based health clinics, life skills instruction, school retention, and…

  11. The Black Economy and Education

    DEFF Research Database (Denmark)

    Larsen, Birthe; Kolm, Ann-Sofie

    This paper develops an equilibrium search and matching model with informal sector employment opportunities and educational choice. We show that informal sector job opportunities distort educational attain- ment inducing a too low stock of educated workers. As informal job opportunities to a large...

  12. Educational Achievement and Black-White Inequality. Statistical Analysis Report.

    Science.gov (United States)

    Jacobson, Jonathan; Olsen, Cara; Rice, Jennifer King; Sweetland, Stephen

    This study explored relationships between black-white differences in educational achievement and black-white differences in various educational and economic outcomes. Three data sets examined the extent to which black-white differences in labor market outcomes, in educational attainment, and in mathematics and reading achievement were present for…

  13. Black hole masses in active galaxies

    OpenAIRE

    Barth, Aaron J.

    2004-01-01

    This contribution reviews two topics of current interest in the study of black hole demographics in active galaxies: Can the stellar velocity dispersions of quasar host galaxies be measured? And can we constrain the black hole mass function below 10^6 M_⊙?

  14. Black parental involvement in education

    African Journals Online (AJOL)

    Erna Kinsey

    The South African Schools Act of 1996 (SASA) provides formal power in education to parents as well as communities. SASA creates the ..... sports. Frequently, we would stay in a home until late in the evening without talking to anybody but observing and waiting. Findings. Home conditions. The home conditions of many ...

  15. Open the "Black Box" Creativity and Innovation: A Study of Activities in R&D Departments. Some Prospects for Engineering Education

    Science.gov (United States)

    Millet, Charlyne; Oget, David; Cavallucci, Denis

    2017-01-01

    Innovation is a key component to the success and longevity of companies. Our research opens the "black box" of creativity and innovation in R&D teams. We argue that understanding the nature of R&D projects in terms of creativity/innovation, efficiency/inefficiency, is important for designing education policies and improving…

  16. Black Elite: The New Market for Highly Educated Black Americans.

    Science.gov (United States)

    Freeman, Richard B.

    This examination of the collapse in traditional discriminatory patterns in the market for highly qualified black Americans documents the World War II gain of college trained and related high level black workers, investigates the response of black college students and qualified personnel to the new market setting, and explores the factors that…

  17. Black Girl Cartography: Black Girlhood and Place-Making in Education Research

    Science.gov (United States)

    Butler, Tamara T.

    2018-01-01

    Drawing on research in education, Black Girlhood studies, and conversations connected to girlhood and cartography, this chapter calls for transdisciplinary analyses of Black girls' sociocultural and geopolitical locations in education research. In reviewing education research documenting the practices and interrogating the experiences of Black…

  18. Beyond the "Jim Crow" experience: blacks in chiropractic education.

    Science.gov (United States)

    Wiese, G

    1994-06-01

    Although the first chiropractic adjustment was given by D.D. Palmer to a black man in 1895, within two decades attendance at the Palmer School of Chiropractic was forbidden to blacks. Not until mid-century were blacks allowed entrance into the oldest and largest chiropractic college in the United states. Denied entry at the Palmer School, most blacks who entered chirporactic studied in "Jim Crow" schools run by white practitioners in the North. This paper explores the social, historicl and economic factors influencing the exclusion of blacks from medical education, and concludes that chirpractic education is at the stage medical education was twenty-five years ago in its attempts to recruit black students. The author recommends that the Association of Chiropractic Colleges establish a task force on minoritiy recruitment to expand the educational opportunities in chiropractic for blacks and other minorities.

  19. Falling through the Cracks: Black Girls and Education

    Science.gov (United States)

    Ricks, Shawn Arango

    2014-01-01

    The needs of Black girls are often overlooked by teachers, administrators, and policy makers. This oversight has contributed to a lack of educational programming and policies that address the impact of the intersection of racism and sexism on the educational experiences of Black girls, with some attention to the achievement gap. Policies simply…

  20. Teacher Education and Black Male Students in the United States

    Directory of Open Access Journals (Sweden)

    H. Richard Milner

    2013-10-01

    Full Text Available Teacher education programs in the United States (U.S. struggle to prepare teachers to meet the complex needs of elementary and secondary students in public schools - especially those of color, those living in poverty, and those whose first language is not English. In this article, we argue for focused attention on preparing educators to teach African American male students as these students face particular institutional challenges in successfully navigating the U.S. public school system. Drawing from the significant body of research on teacher education and teacher learning for equity and social justice, four Black teacher educators discuss challenges they have faced in classes designed to prepare teachers to teach Black male students. Through an analysis of commonalities in their experiences, they propose means for teacher educators to foster greater understandings of the heterogeneity found among Black male students so that teachers can craft more responsive and responsible educational experiences for Black males.

  1. Black African Parents' Experiences of an Educational Psychology Service

    Science.gov (United States)

    Lawrence, Zena

    2014-01-01

    The evidence base that explores Black African parents' experiences of an Educational Psychology Service (EPS) is limited. This article describes an exploratory mixed methods research study undertaken during 2009-2011, that explored Black African parents' engagement with a UK EPS. Quantitative data were gathered from the EPS preschool database and…

  2. The Net Black Advantage in Educational Transitions: An Education Careers Approach

    Science.gov (United States)

    Merolla, David M.

    2013-01-01

    Recent studies have found a net Black advantage in educational attainment. This pattern indicates that after controlling for socioeconomic and academic characteristics, Black students are more likely to continue education than are their White counterparts. Using an educational careers approach, this study examines selection and student…

  3. Black education in South Africa: issues, problems and perspectives

    Directory of Open Access Journals (Sweden)

    Alex Thembela

    2013-02-01

    Full Text Available In this article Professor Thembela, Vice-Chairman of the Board of Trustees, UPTTRAIL Trust*, sketches some of the issues which constitute major problems in the education of black South Africans. In the first place the discontinuity between the pupils' traditional home background and a Westernized system of education creates severe obstacles. They are aggravated by the fact that black culture is itself in transition. by the contempt with which black culture was regarded by the colonialists and by the discriminatory political practices which denied black education adequate provision. Other issues that further complicate black education are: * the second language medium of instruction which has been adopted for the purpose of securing international participation but which doubles the burden on the black learner and contributes to an appalling failure rate * the inadequate qualifications of black teachers * inadequate financing of black education * the impoverished communities from which black pupils and teachers come * the perception among many black pupils that their education is inferior * the situation of cultural, social and political conflict created by the development of black education. To remedy such a situation, intervention of an exceptional nature is needed. The UPTTRAIL project promises to provide such intervention. In hierdie artikel skets Professor Thembela, Vise-voorsitter van die Raad van Trustees, UPTTRAIL Trust, van die hoofprobleme in die swart onderwys in Suid-Afrika. In die eerste plek veroorsaak die gaping tussen die leerlinge se tradisionele huislike agtergrond en 'n verwesterse onderwysstelsel geweldige probleme. Dit word vererger deur die oorgangsfase waarin die swart kultuur homselfbevind, deur die minagting waarmee die swart kultuur deur die kolonialiste beskou is en deur die diskriminerende politieke wanpraktyke wat die swart onderwys baie ontse het. Ander sake wat swart onderwys verder kompliseer, is * die .gebruik van

  4. The Sports Participation Effect on Educational Attainment of Black Males

    Science.gov (United States)

    Harris, Paul C.

    2014-01-01

    The purpose of this study is to explore the direct, indirect, and total effects of high school sports participation on educational attainment for Black males using the Educational Longitudinal Study (2002/2006), a large, nationally representative, database. A path analysis procedure for determining underlying causal relationships between variables…

  5. The Influence of Dominant Race Environments on Student Involvement, Perceptions, and Educational Gains: A Look at Historically Black and Predominantly White Liberal Arts Institutions.

    Science.gov (United States)

    Watson, Lemuel, W.; Kuh, George D.

    1996-01-01

    Examined the relationships among involvement in campus activities, perceptions of the institutional environment, and educational gains of undergraduates at two predominantly black and two predominantly white private liberal arts institutions. Black students at predominantly black colleges benefited more from their overall involvement than did…

  6. Aspects of higher education and black chartered accountants ...

    African Journals Online (AJOL)

    The purpose of the article is to furnish insight into the reasons why so few blacks have chosen to study accountancy, particularly on a postgraduate level and the problems they experienced whilst studying towards the chartered accountancy qualification. The accounting profession, business, institutions of higher education ...

  7. Race and Color: Revisiting Perspectives in Black Education

    Science.gov (United States)

    Monroe, Carla R.

    2016-01-01

    Racial inequities, such as systematic disparities in school discipline and achievement outcomes, are a perennial characteristic of public education in the United States. Although attention to interracial chasms such as the Black-White achievement gap is common, limited efforts are devoted to understanding how and why colorism motivates imbalances…

  8. The Black Hole of Education Research.

    Science.gov (United States)

    Miller, D. W.

    1999-01-01

    Critics feel education scholarship lacks rigor and a practical focus on achievement, wasting substantial resources. Research on effectiveness of educational reforms is often weak, inconclusive, or simply inadequate, and good scholarship may have little influence on classroom practice. Popular policies often persist despite strong research evidence…

  9. Liberal Education: A Literary Black Hole?

    Science.gov (United States)

    Pederson, Tom

    1989-01-01

    An overview of the historical traditions presented by Bruce Kimball in his "Orators and Philosophers: A History of the Idea of Liberal Education" is presented. The significance of the structure of the Catholic and other Christian churches in perpetuating the ideal and reality of a liberal arts education is discussed. (Author/MLW)

  10. Educating in a "Regressive Era": Exploring the Race-Full Ideological Standpoint of Black Women Teachers

    Science.gov (United States)

    Watson, Wanda

    2017-01-01

    The purpose of this 2-year phenomenological study was to build on the legacy of Black women educators before and after "Brown v. Board of Education" and examine the ideological standpoint of early career Black women educators from the millennial generation. Semi-structured interviews were conducted with three Black women educators…

  11. Education in the Black Diaspora: Perspectives, Challenges, and Prospects. Routledge Research in Education

    Science.gov (United States)

    Freeman, Kassie, Ed.; Johnson, Ethan, Ed.

    2011-01-01

    This volume gathers scholars from around the world in a comparative approach to the various educational struggles of people of African descent, advancing the search for solutions and bringing to light new facets of the experiences of black people in the era of globalization. This book begins with "Black Populations in the Diaspora:…

  12. Langues et education en Afrique noire (Language and Education in Black Africa).

    Science.gov (United States)

    Bearth, Thomas, Ed.

    1997-01-01

    Papers on language and education in Black Africa include: "L'enseignement des et en langues nationales au Zaire. Bilan d'une experience" ("The Teaching of and in National Languages in Zaire. Results of an Experiment") (Andre Mbula Paluku); "Langues et education au Rwanda" ("Languages and Education in…

  13. Educators' and Non-Educators' Perceptions of Black Males: A Survey.

    Science.gov (United States)

    Foster, Herbert L.

    1995-01-01

    This survey of 1,627 educators and 1,503 non-educators found stereotypical attitudes and prejudices toward African American males, in the categories of athletics, crime, education, music, attitude, family, personality, and sexual prowess. Teachers are urged to become aware of negative black male stereotypes they may harbor, which…

  14. Black Father Involvement in Gifted Education: Thoughts from Black Fathers on Increasing/Improving Black Father-Gifted Teacher Partnerships

    Science.gov (United States)

    Grantham, Tarek C.; Henfield, Malik S.

    2011-01-01

    Black fathers are important advocates in addressing the underrepresentation of Black students in gifted programs, as well as the achievement gaps between Black and White students. Black fathers increasingly understand the important role that Black mothers have traditionally played in supporting their gifted children's school experiences. As a…

  15. Inequality in education and quotas for black students in universities

    Directory of Open Access Journals (Sweden)

    Eunice R. Durham

    Full Text Available This article discusses the proposed definition of quotas for black students in universities in view of the widespread inequalities in the Brazilian educational system. The author defends that the proposed measure would lead to limitations and distortions, for it is based on rigid, artificial categories, in sharp contrast with the country's ethnic heterogeneity, and fails to consider key factors in the schooling experience of afro-descendants. The study of statistical series has shown that in spite of the progress made, there is still a great educational gap dividing white students from black and mulatto students. This led the author to conclude that public initiatives geared to reinforcing basic skills would constitute a more effective affirmative action than the establishment of quotas.

  16. Mapping Violence, Naming Life: A History of Anti-Black Oppression in the Higher Education System

    Science.gov (United States)

    Mustaffa, Jalil Bishop

    2017-01-01

    The article will provide a historical overview of anti-Black violence in the higher education system across three time periods: Colonial Era, Post-Civil War, and the mid-to-late twentieth century. Mapping violence demands a focus on how higher education historically has practiced anti-Black oppression coupled with how Black people have practiced…

  17. Emancipatory educational activities

    Directory of Open Access Journals (Sweden)

    Ivo Tonet

    2014-04-01

    Full Text Available Can education, in the current status of the capitalist society, contribute to human emancipation? The aim of this paper is to defend the idea that generally it is not possible to organize education in its form and its content in order to contribute to the construction of a fully emancipated society. However, to the extent that capitalist society presents, in essence, a contradiction between capital and labor, we believe that it is possible to hold, within its own educational dimension, activities that contribute to the radical transformation of the world and to the construction of a form of sociability that goes beyond and is superior to capitalism.

  18. An Examination of Black Science Teacher Educators' Experiences with Multicultural Education, Equity, and Social Justice

    Science.gov (United States)

    Atwater, Mary M.; Butler, Malcolm B.; Freeman, Tonjua B.; Carlton Parsons, Eileen R.

    2013-12-01

    Diversity, multicultural education, equity, and social justice are dominant themes in cultural studies (Hall in Cultural dialogues in cultural studies. Routledge, New York, pp 261-274, 1996; Wallace 1994). Zeichner (Studying teacher education: The report of the AERA panel on research and teacher education. Lawrence Erlbaum Associates, Mahwah, pp 737-759, 2005) called for research studies of teacher educators because little research exists on teacher educators since the late 1980s. Thomson et al. (2001) identified essential elements needed in order for critical multiculturalism to be infused in teacher education programs. However, little is known about the commitment and experiences of science teacher educators infusing multicultural education, equity, and social justice into science teacher education programs. This paper examines twenty (20) Black science teacher educators' teaching experiences as a result of their Blackness and the inclusion of multicultural education, equity, and social justice in their teaching. This qualitative case study of 20 Black science teacher educators found that some of them have attempted and stopped due to student evaluations and the need to gain promotion and tenure. Other participants were able to integrate diversity, multicultural education, equity and social justice in their courses because their colleagues were supportive. Still others continue to struggle with this infusion without the support of their colleagues, and others have stopped The investigators suggest that if science teacher educators are going to prepare science teachers for the twenty first century, then teacher candidates must be challenged to grapple with racial, ethnic, cultural, instructional, and curricular issues and what that must mean to teach science to US students in rural, urban, and suburban school contexts.

  19. (Un)Intended Consequences? The Impact of the Brown v. Board of Education Decision on the Employment Status of Black Educators

    Science.gov (United States)

    Tillman, Linda C.

    2004-01-01

    The displacement of Black educators after the "Brown v. Board of Education" decision was an extraordinary social injustice. The wholesale firing of Black educators threatened the economic, social, and cultural structure of the Black community, and ultimately the social, emotional, and academic success of Black children. The author presents a…

  20. Some early black doctors — a very politically active cohort

    African Journals Online (AJOL)

    black townships where he became well known for not charging indigent patients. This awareness of his patients' deprivation led to political activism. Motala revived the ... training because of having to attend alternative tutorials if a European patient was being demonstrated'. Lawrence concluded that 'medical training under ...

  1. Studies of activated carbon and carbon black for supercapacitor applications

    Energy Technology Data Exchange (ETDEWEB)

    Richner, R.; Mueller, S.; Koetz, R.; Wokaun, A. [Paul Scherrer Inst. (PSI), Villigen (Switzerland)

    1999-08-01

    Carbon Black and activated carbon materials providing high surface areas and a distinct pore distribution are prime materials for supercapacitor applications at frequencies < 0.5 Hz. A number of these materials were tested for their specific capacitance, surface and pore size distribution. High capacitance electrodes were manufactured on the laboratory scale with attention to ease of processability. (author) 1 fig., 1 ref.

  2. Determining Central Black Hole Masses in Distant Active Galaxies

    DEFF Research Database (Denmark)

    Vestergaard, Marianne

    2002-01-01

    An empirical relationship, of particular interest for studies of high redshift active galactic nuclei (AGNs) and quasars, between the masses of their central black-holes and rest-frame ultraviolet (UV) parameters measured in single-epoch AGN spectra is presented. This relationship is calibrated...... black-hole demographics at high redshift as well as to statistically study the fundamental properties of AGNs. The broad line region size - luminosity relationship is key to the calibrations presented here. The fact that its intrinsic scatter is also the main source of uncertainty in the calibrations...

  3. The Black Sea one decade after the Bucharest Convention an overview of the international activities in the Black Sea region

    International Nuclear Information System (INIS)

    Goektepe, G.

    2002-01-01

    The catastrophic degradation of the Black Sea in a period of four decade has been the major concern of the Black Sea countries and international communities since Bucharest Convention signed in 1992. The Black Sea Region has became a challenging international arena for political scientific and socio-economic activities. Intensive international programmes and establishment of governmental and Non Governmental Organizational structures of the 1990s including Black Sea Economic Cooperation (BSEC), Black Sea Environmental Programme(BSEP), Environmental Programme for the Danube River Basin, Marine Environmental Assessment of the Black Sea Region Technical Cooperation Programme by the IAEA and establishment of the Black Sea Commission Permanent Secretariat are some of the major international efforts of the past decade that emphasizes the multi-nationality and large dimension of the Black Sea environmental management issues. The environmental degradation of the Black Sea is briefly reviewed based on the BSEP reports and data available for land based pollution sources. The environmental risk of marine vessel accidents are indicated and environmental safety concern is emphasized under the current conditions of intense energy transportation projects in the Black Sea and Caspian regions. The international policy actions, co-operation issues and scientific programmes of the past decade are overviewed with emphasis on the international achievements. Concluding remarks include the vital importance of continuation of the international commitments and sharing the political, scientific and socio-economic responsibility on the transboundary environmental pollution, rehabilitation and the safety issues of the Black Sea

  4. Antioxidant activity of black bean (Phaseolus vulgaris L. protein hydrolysates

    Directory of Open Access Journals (Sweden)

    Jarine Amaral do EVANGELHO

    2016-01-01

    Full Text Available Abstract The objective of this work was to study the effect of enzymatic hydrolysis of black bean protein concentrate using different enzymes. Bean proteins were extracted and hydrolyzed over a period of 120 min using the enzymes pepsin or alcalase. The protein hydrolysates’ molecular weight was assayed by electrophoresis and the antioxidant activity was evaluated by the capturing methods of free radicals ABTS●+ and DPPH. Electrophoretic results showed that the bands above 50 kDa disappeared, when the beans protein was subjected to hydrolysis with pepsin. The bean protein hydrolysate obtained by hydrolysis with alcalase enzyme, showed higher antioxidant activity for inhibition of the radical ABTS●+. However, the hydrolysates obtained by hydrolysis with pepsin had higher antioxidant activity for inhibition of the radical DPPH. The use of pepsin and alcalase enzymes, under the same reaction time, produced black bean protein hydrolysates with different molecular weight profiles and superior antioxidant activity than the native bean protein.

  5. Are We Still Receiving a Colored Education? Education of Black Students.

    Science.gov (United States)

    Hampton, Marjorie

    With the 1964 Civil Rights Act, school segregation was to come to an end, but it may be that black students are still receiving a "colored" education. There are inequities and prejudices in U.S. institutions, and these have tremendous influences on how African Americans are perceived and accepted. The nation's African American students…

  6. Effects of Body Fat on Weight Concerns, Dating, and Sexual Activity: A Longitudinal Analysis of Black and White Adolescent Girls.

    Science.gov (United States)

    Halpern, Carolyn Tucker; Udry, J. Richard; Suchindran, Chirayath; Campbell, Benjamin

    1999-01-01

    Investigated implications of body-fat differences for dating and sexual activity and implications of heterosexual activity for dieting and weight concerns in adolescent girls. Found that among white girls, and blacks with college-educated mothers, more body fat was associated with lower dating probability, even among non-obese girls. Body fat was…

  7. Cold, clumpy accretion onto an active supermassive black hole.

    Science.gov (United States)

    Tremblay, Grant R; Oonk, J B Raymond; Combes, Françoise; Salomé, Philippe; O'Dea, Christopher P; Baum, Stefi A; Voit, G Mark; Donahue, Megan; McNamara, Brian R; Davis, Timothy A; McDonald, Michael A; Edge, Alastair C; Clarke, Tracy E; Galván-Madrid, Roberto; Bremer, Malcolm N; Edwards, Louise O V; Fabian, Andrew C; Hamer, Stephen; Li, Yuan; Maury, Anaëlle; Russell, Helen R; Quillen, Alice C; Urry, C Megan; Sanders, Jeremy S; Wise, Michael W

    2016-06-09

    Supermassive black holes in galaxy centres can grow by the accretion of gas, liberating energy that might regulate star formation on galaxy-wide scales. The nature of the gaseous fuel reservoirs that power black hole growth is nevertheless largely unconstrained by observations, and is instead routinely simplified as a smooth, spherical inflow of very hot gas. Recent theory and simulations instead predict that accretion can be dominated by a stochastic, clumpy distribution of very cold molecular clouds--a departure from the 'hot mode' accretion model--although unambiguous observational support for this prediction remains elusive. Here we report observations that reveal a cold, clumpy accretion flow towards a supermassive black hole fuel reservoir in the nucleus of the Abell 2597 Brightest Cluster Galaxy (BCG), a nearby (redshift z = 0.0821) giant elliptical galaxy surrounded by a dense halo of hot plasma. Under the right conditions, thermal instabilities produce a rain of cold clouds that fall towards the galaxy's centre, sustaining star formation amid a kiloparsec-scale molecular nebula that is found at its core. The observations show that these cold clouds also fuel black hole accretion, revealing 'shadows' cast by the molecular clouds as they move inward at about 300 kilometres per second towards the active supermassive black hole, which serves as a bright backlight. Corroborating evidence from prior observations of warmer atomic gas at extremely high spatial resolution, along with simple arguments based on geometry and probability, indicate that these clouds are within the innermost hundred parsecs of the black hole, and falling closer towards it.

  8. Countering the Narrative: A Layered Perspective on Supporting Black Males in Education

    Science.gov (United States)

    Goings, Ramon B.; Smith, Aaron; Harris, Daniel; Wilson, Tanneshala; Lancaster, Demetrius

    2015-01-01

    The challenges facing Black males throughout the educational pipeline have been discussed by researchers in detail. However, missing from this research are discussions from the perspective of researchers, educators, and community members united on how to better support Black males. The purpose of this reflective piece is twofold. First, we address…

  9. "A Grammar for Black Education beyond Borders": Exploring Technologies of Schooling in the African Diaspora

    Science.gov (United States)

    Givens, Jarvis Ray

    2016-01-01

    Education has been a technology used to sustain black abjection across the African Diaspora. Employing Mills' Racial Contract and Althusser's theory of the Ideological State Apparatuses (ISA) through a racial lens, this article will discuss how white supremacist education has been used to promote the misrecognition of black subjects as sub-human.…

  10. Private Sector Investment in Black Education and Training: Rescuing South African Capitalism from Apartheid's Crisis.

    Science.gov (United States)

    Kraak, Andre

    1989-01-01

    Discusses: (1) the factors contributing to increased involvement by South African business and industry in Black education and training; (2) the Urban Foundation's commitment to non-formal education in Black communities; (3) intervention by American corporations; and (4) the dramatic failure of capitalist initiatives. Contains 55 references. (SV)

  11. Decolonizing Higher Education: Black Feminism and the Intersectionality of Race and Gender

    Directory of Open Access Journals (Sweden)

    Heidi Safia Mirza

    2015-05-01

    Full Text Available Drawing on black feminist theory, this paper examines the professional experiences of postcolonial diasporic black and ethnicized female academics in higher education. The paper explores the embodiment of gendered and racialized difference and reflects on the power of whiteness to shape everyday experiences in such places of privilege. The powerful yet hidden histories of women of color in higher education, such as the Indian women suffragettes and Cornelia Sorabji in late nineteenth century, are symbolic of the erasure of an ethnicized black feminist/womanist presence in mainstream (white educational establishments. The paper concludes that an understanding of black and ethnicized female agency and desire for education and learning is at the heart of a black feminist analysis that reclaims higher education as a radical site of resistance and refutation.

  12. Black men in the medical education pipeline: past, present, and future.

    Science.gov (United States)

    Ready, T; Nickens, H W

    1991-04-01

    The authors discuss the decline in the numbers of black men enrolling in medical school over the last two decades and assess possible reasons for it, including the smaller numbers of men from nearly all races and ethnic groups now applying to medical school, the declining popularity of the undergraduate biology degree among men in general, the falling number of black students who go on to college, and, underlying all these, the pervasive effects of poverty on educational achievement, the dwindling employment opportunities for black men of limited education (brought on by dramatic changes in the American economy), and the rising indices of stress and alienation among black men. The authors review the larger social implications of the growing educational gap between black men and other segments of society, pose questions about some of the trends that have been mentioned, indicate lines for further research, and propose potential solutions to the problem of the deepening underrepresentation of black men in medical schools.

  13. Centering perspectives on Black women, hair politics, and physical activity.

    Science.gov (United States)

    Versey, H Shellae

    2014-05-01

    As researchers categorize issues facing Black women's health, obesity and physical exercise continue to be significant topics of debate. General interventions targeted toward Black women to address obesity and increase physical exercise have been largely ineffective. In this article, I situate the current public health discourse on obesity and related interventions within a sociocultural context of body appearance, with a specific focus on hair. Why do some African American women feel such strong ties to their hair that they will avoid exercise? What can be done to understand this phenomenon and address alternatives that may make both hair maintenance and regular exercise feasible? I map a theoretical argument for why hair matters for some women, and discuss how physical activity intervention strategies might be improved by considering such complexities.

  14. Elementary concentration of Peruibe black mud by neutron activation analysis

    International Nuclear Information System (INIS)

    Torrecilha, Jefferson K.; Ponciano, Ricardo; Silva, Paulo S.C da

    2013-01-01

    The Peruibe Black Mud is used in therapies such as psoriasis, peripheral dermatitis, acne, seborrehea, myalgia arthritis and rheumatic non-articular processes. This material is characterized by is fine organic matter particles, sulphate reducing bacteria and a high content of potential reduction ions. Although this material is particles, sulphate reducing bacteria and a high content of potential reduction ions. Although this material is considered natural, it may not be free of possible adverse health effects, like toxic chemical elements, when used for therapeutic purposes. In the therapeutic treatments involving clays, clays are used in mud form also called peloids, obtained by maturation process. Five in natura and three maturated Black Mud samples were collected in Peruibe city, Sao Paulo State, Brazil. To investigate the distribution of major, trace and rare earth elements in the in natura and maturated clays that constitute the Peruibe Black Mud, neutron activation analysis (NAA) was used. A comparison between in natura and maturated mud shows that major, trace and rare earth elements follow the same order in both types. Generally, the concentrations in the maturated mud are slightly lower than in natura mud. Enrichment on the upper continental crust could be observed for the elements As, Br, Sb and Se, in these types of mud. (author)

  15. Elementary concentration of Peruibe black mud by neutron activation analysis

    Energy Technology Data Exchange (ETDEWEB)

    Torrecilha, Jefferson K.; Ponciano, Ricardo; Silva, Paulo S.C da, E-mail: jeffkoy@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN/SP), Sao Paulo, SP (Brazil)

    2013-07-01

    The Peruibe Black Mud is used in therapies such as psoriasis, peripheral dermatitis, acne, seborrehea, myalgia arthritis and rheumatic non-articular processes. This material is characterized by is fine organic matter particles, sulphate reducing bacteria and a high content of potential reduction ions. Although this material is particles, sulphate reducing bacteria and a high content of potential reduction ions. Although this material is considered natural, it may not be free of possible adverse health effects, like toxic chemical elements, when used for therapeutic purposes. In the therapeutic treatments involving clays, clays are used in mud form also called peloids, obtained by maturation process. Five in natura and three maturated Black Mud samples were collected in Peruibe city, Sao Paulo State, Brazil. To investigate the distribution of major, trace and rare earth elements in the in natura and maturated clays that constitute the Peruibe Black Mud, neutron activation analysis (NAA) was used. A comparison between in natura and maturated mud shows that major, trace and rare earth elements follow the same order in both types. Generally, the concentrations in the maturated mud are slightly lower than in natura mud. Enrichment on the upper continental crust could be observed for the elements As, Br, Sb and Se, in these types of mud. (author)

  16. "Let Freedom Ring!" Black Women's Spirituality Shaping Prophetic Christian Education

    Science.gov (United States)

    Smith, Yolanda Y.

    2012-01-01

    The author believes that a deep sense of spirituality together with effective Christian education can be a powerful resource for equipping individuals and communities to play an active role in transforming their lives as well as oppressive systems that have impacted their communities. In her discussion of spirituality, womanist ethicist Emilie…

  17. New Possibilities: (Re)Engaging Black Male Youth within Community-Based Educational Spaces

    Science.gov (United States)

    Baldridge, Bianca J.; Hill, Marc Lamont; Davis, James Earl

    2011-01-01

    Despite the assertion that due to an Obama presidency America has become a post-racial society, Black males still face a unique social crisis. In this article, we hold that both race and gender continue to work in tandem to produce a certain set of social outcomes for young Black men in America despite this assertion. The educational, economic,…

  18. [Biologically active substances of black currant of new varieties].

    Science.gov (United States)

    Miasishcheva, N V; Artemova, E N

    2013-01-01

    The assortment of black currant actively replenishes and is constantly updated as a result of successful work of domestic and foreign selectors. New grades of black currant are characterized by the raised content of biologically active substances, including vitamin C, P-active agents, pectin and are of special interest for studying. Fresh berries of seven grades (Azhurnaya, Arapka, Iskushenie, Kreolka, Ladushka, Orel serenade, Ocharovanie) of black currant which were selected by the All-Russian research institute of selection of fruit crops and are perspective for cultivation in the Central Chernozem Region of Russia were chosen as objects for research. The nutritional value of fresh berries was found to vary. Average content of soluble solids was 14.1%, while those below the average were observed in Kreolka (12.1%). The maximum amount of sugars characterized Ladushka grade (11.05%), minimum--Kreolka (9.00%). It has been found that most varieties have fairly high acidity. It is worth noting grade Ladushka, which had the highest sugar-acid index (4.39), with the lowest acidity (2.51%). The highest content of ascorbic acid was found in varieties Orel Serenade--183.7 mg/100 g, the smallest--Ocharovanie--110 mg/100 g, grade Azhurnaya, Kreolka, Ladushka exceeded this indicator average value (144.9 mg/100 g). In terms of the amount of P-active substances stood grades having values above the average (722.2 mg/100 g): Azhurnaya (789.8 mg/100 g), Kreolka (864.5 mg/100 g), Oryol serenade (765.6 mg/100 g). The average content of pectin in the studied berries of black currant was 7.92%, with a minimum of 6.30% was observed in grades Azhurnaya, maximum 9.90%--the kind Oryol serenade. High values of this index were characterized by grade Ladushka, Ocharovanie. Azhurnaya varieties, Creole, Orel serenade had high levels of ascorbic acid and P-active substances. Sort Ladushka marked as a dessert due to the largest sugar-acid ratio. Ladushka, Orel Serenade, Ocharovanie have the

  19. Validation of physical activity instruments: Black Women's Health Study.

    Science.gov (United States)

    Carter-Nolan, Pamela L; Adams-Campbell, Lucile L; Makambi, Kepher; Lewis, Shantell; Palmer, Julie R; Rosenberg, Lynn

    2006-01-01

    Few studies have reported on the validity of physical activity measures in African Americans. The present study was designed to determine the validity of a self-administered physical activity questionnaire (PAQ) that was used in a large prospective study of African American women in the United States against an accelerometer (actigraph), an objective assessment of movement, and a seven-day activity diary. The study was conducted among 101 women enrolled in the Black Women's Health Study (BWHS) cohort who resided in the Washington, DC, metropolitan area, representing 11.2% (101/900) of this sample. Physical activity levels were obtained from the parent BWHS PAQ (eg, 1997 and 1999) and repeated in the present study. This information entailed hours per week of participation in walking for exercise, hours per week of moderate activity (eg, housework, gardening, and bowling), and hours per week of strenuous activity (eg, basketball, swimming, running, and aerobics) during the previous year. The participants were required to wear actigraphs for seven days and then record their physical activities in their diaries (seven-day physical activity diary) during this time. The diaries were used to record the amount and pattern of daily energy expenditure. Significant positive correlations were seen between the BWHS PAQ and the actigraph for total activity, r=.28; walking, r=.26; and vigorous activity, r=.40, PPAQ also demonstrated significant correlations for total (r=0.42, PPAQ is a useful measure of physical activity in the BWHS cohort and thus has utility in prospective epidemiologic research.

  20. "Less than a Vapor": Positioning Black lesbian women in history teacher education.

    Science.gov (United States)

    Woodson, Ashley N

    2017-10-02

    In this article, I discuss the possibilities and implications of centering Black lesbian identities and relationships in history teacher education through a case study with one straight Black woman preservice history teacher named Danitra. Danitra's understanding and navigation of historical research on Black lesbians are discussed in relation to core themes of lesbian historiography and emancipatory historiography. Though the literature on this group is limited, I argue that critical considerations of Black lesbians' interests and experiences help educators to conceive of and teach about history, citizenship, justice, and sexuality in more liberatory ways. I conclude by offering recommendations to history teachers and teacher educators who hope to draw on lesbian and emancipatory historiographies to challenge discourses of invisibility in history teacher education classrooms.

  1. The Status of Black Administrators in Higher Educational Institutions.

    Science.gov (United States)

    Smith, Calvert H.; Tata, Samba

    The types of positions for which black administrators were hired in predominantly white colleges and universities in the late 1960s and the 1970s and the problems they encountered are considered. It is suggested that the threat of more riots by the black community and the federal government's threat to withhold funds from institutions with an…

  2. Facing the Rising Sun: A History of Black Educators in Washington, DC, 1800-2008

    Science.gov (United States)

    Frederick, Rona M.; View, Jenice L.

    2009-01-01

    Over 50 years after the monumental decision of "Brown v. Board of Education," many U.S. schools remain separate and unequal. This includes schools in the nation's capital, Washington, D.C. The article discusses how in the two centuries of public education in Washington, D.C., Black educators used a variety of subversive tactics to…

  3. Race Has Always Mattered: An Intergeneration Look at Race, Space, Place, and Educational Experiences of Blacks

    OpenAIRE

    Yull, Denise G.

    2014-01-01

    Within school settings race continues to be one of the most formidable obstacles for Black children in the United States (US) school system. This paper expands the discussions of race in education by exploring how the social links among race, space, and place provide a lens for understanding the persistence of racism in the educational experiences of Black children. This paper examines how differences in a rural versus urban geographical location influence a student’s experience with race, ra...

  4. Black deaf individuals' reading skills: influence of ASL, culture, family characteristics, reading experience, and education.

    Science.gov (United States)

    Myers, Candace; Clark, M Diane; Musyoka, Millicent M; Anderson, Melissa L; Gilbert, Gizelle L; Agyen, Selina; Hauser, Peter C

    2010-01-01

    Previous research on the reading abilities of Deaf individuals from various cultural groups suggests that Black Deaf and Hispanic Deaf individuals lag behind their White Deaf peers. The present study compared the reading skills of Black Deaf and White Deaf individuals, investigating the influence of American Sign Language (ASL), culture, family characteristics, reading experience, and education. (The descriptor Black is used throughout the present article, as Black Deaf individuals prefer this term to African American. For purposes of parallel construction, the term White is used instead of European American.) It was found that Black Deaf study participants scored lower on measures of both reading and ASL. These findings provide implications for possible interventions at the primary, secondary, and college levels of education.

  5. Race Has Always Mattered: An Intergeneration Look at Race, Space, Place, and Educational Experiences of Blacks

    Directory of Open Access Journals (Sweden)

    Denise G. Yull

    2014-01-01

    Full Text Available Within school settings race continues to be one of the most formidable obstacles for Black children in the United States (US school system. This paper expands the discussions of race in education by exploring how the social links among race, space, and place provide a lens for understanding the persistence of racism in the educational experiences of Black children. This paper examines how differences in a rural versus urban geographical location influence a student’s experience with race, racism, and racial identity across four generations of Black people in the context of school and community. Implications for research and practice are discussed.

  6. Assessing black progress: voting and citizenship rights, residency and housing, education.

    Science.gov (United States)

    Farley, R

    1986-01-01

    Farley discusses progress US blacks have made in the areas of voting and citizenship rights, residency and housing, and education. A major goal of the civil rights movement was to permit blacks to influence the electoral process in the same manner as whites. Most important in this regard was the Voting Rights Act of 1965; the proportion of southern blacks casting ballots increased sharply since the early 1960s. The Civil Rights Act of 1875 outlawed racial segregation in public accommodations, but by the turn of the century, Jim Crow laws in southern states called for segregation in most public places. Common customs and government policy in the North resulted in similar segregation of blacks from whites. The Montgomery bus boycott and similar protests in dozens of other cities led to enactment of Title II of the Civil Rights Act of 1964, which proscribed such racial practices. By the late 1960s, blacks in all regions could use the same public accommodations as whites. In most metropolitan areas, de facto racial segregation persisted long after the laws were changed. Supreme Court decisions and local open-housing ordinances supported the right of blacks to live where they could afford. However the major change was the Fair Housing Act of 1968, which outlawed racial discrimination in the sale or rental of most housing units. The separation of blacks from whites did not end in the 1970s. Today, in areas which have large black populations, there are many central city neighborhoods and a few in the suburbs which are either all-black or are becoming exclusively black enclaves. Most other neighborhoods have no more than token black populations. Another major effort of civil rights organizations has been the upgrading of housing quality for blacks. By 1980, only 6% of the homes and apartments occupied by blacks lacked complete plumbing facilities (down from 50% in 1940). Unlike the modest changes in residential segregation, racial differences in housing quality have been

  7. Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the Black Hole Mass-Velocity Dispersion Relationship for Active Galactic Nuclei

    DEFF Research Database (Denmark)

    Onken, Christopher A.; Ferrarese, Laura; Merritt, David

    2004-01-01

    We calibrate reverberation-based black hole masses in active galactic nuclei (AGNs) by using the correlation between black hole mass, M, and bulge/spheroid stellar velocity dispersion, sigma. We use new measurements of sigma for 6 AGNs and published velocity dispersions for 10 others......, in conjunction with improved reverberation mapping results, to determine the scaling factor required to bring reverberation-based black hole masses into agreement with the quiescent galaxy M-sigma relationship. The scatter in the AGN black hole masses is found to be less than a factor of 3. The current...

  8. The State of Black Education: The Politics of Educating African American Students at Colleges and Universities

    Directory of Open Access Journals (Sweden)

    Earnest N. Bracey, Ph.D.

    2014-03-01

    Full Text Available In terms of higher education for African American students, the “school-to-prison pipeline” or Prison Industrial Complex must be totally dismantled in order to focus entirely on academic performance at colleges and universities and HBCUs. Additionally, mentors should be identified to tutor and guide and help black youngsters overcome their fear of learning and going to school, so that our whole society can benefit and improve academically. Finally, in this respect, we-the-people can move our nation forward by graduating people of color at higher institutions of learning, while providing them with a more productive life, and social advancement.

  9. Education and Alcohol Consumption among Older Americans; Black-White Differences

    Directory of Open Access Journals (Sweden)

    Shervin eAssari

    2016-04-01

    Full Text Available Abstract:Purpose: Although the link between education and alcohol consumption is known, limited information exists on racial differences in this link. We conducted the current study to test Black- White differences in the association between education and alcohol consumption among older adults in the United States. Methods: This cross-sectional survey enrolled 1,493 Black (n=734 and White (n=759 older adults (age 66 or more in United States. Data came from the Religion, Aging, and Health Survey, 2001. Race, demographics, socio-economics, and alcohol consumption were measured. Independent variable was education level. Outcome was alcohol consumption. Race was the focal moderator. Logistic regression was used for data analysis. Results: Education was positively associated with ever drinking in the pooled sample. Race, however, interacted with education level on drinking, suggesting a smaller effect of education on drinking for Blacks compared to Whites. Among Whites, high school graduation and college graduation were associated with increased odds of ever drinking, net of covariates. Among Blacks, high school graduation but not college graduation was associated with ever drinking. Conclusion: Blacks and Whites differ in how socio-economic status (i.e. education shapes behaviors health behaviors (i.e. drinking. How race modifies consequences and correlates of social determinants of health is not yet clear. College graduation may result in the same level of change to the social network and income of race group members. Lower effect of education on health of Blacks may be due to the structural role of race and racism that has resulted in lower job availability and pay for Blacks.

  10. Education and Alcohol Consumption among Older Americans; Black-White Differences.

    Science.gov (United States)

    Assari, Shervin; Lankarani, Maryam Moghani

    2016-01-01

    Although the link between education and alcohol consumption is known, limited information exists on racial differences in this link. We conducted the current study to test Black-White differences in the association between education and alcohol consumption among older adults in the U.S. This cross-sectional survey enrolled 1,493 Black (n = 734) and White (n = 759) older adults (age 66 or more) in U.S. Data came from the Religion, Aging, and Health Survey, 2001. Race, demographics, socioeconomics, and alcohol consumption were measured. Independent variable was education level. Outcome was alcohol consumption. Race was the focal moderator. Logistic regression was used for data analysis. Education was positively associated with ever drinking in the pooled sample. However, race interacted with education level on drinking, suggesting a smaller effect of education on drinking for Blacks compared to Whites. Among Whites, high-school graduation and college graduation were associated with increased odds of ever drinking, net of covariates. Among Blacks, high-school graduation, but not college graduation, was associated with ever drinking. Blacks and Whites differ in how socioeconomic status (i.e., education) shapes behaviors, especially health behaviors (i.e., drinking). How race modifies consequences and correlates of social determinants of health is not yet clear. College graduation may result in the same level of change to the social network and income of race group members. Weaker effect of education on health of Blacks may be due to the structural role of race and racism that has resulted in lower job availability and pay for Blacks.

  11. Participation in Black Lives Matter and Deferred Action for Childhood Arrivals: Modern Activism among Black and Latino College Students

    Science.gov (United States)

    Hope, Elan C.; Keels, Micere; Durkee, Myles I.

    2016-01-01

    Political activism is one way racially/ethnically marginalized youth can combat institutional discrimination and seek legislative change toward equality and justice. In the current study, we examine participation in #BlackLivesMatter (BLM) and advocacy for Deferred Action for Childhood Arrivals (DACA) as political activism popular among youth.…

  12. General experiences + race + racism = Work lives of Black faculty in postsecondary science education

    Science.gov (United States)

    Parsons, Eileen R. C.; Bulls, Domonique L.; Freeman, Tonjua B.; Butler, Malcolm B.; Atwater, Mary M.

    2016-12-01

    Existent research indicates that postsecondary Black faculty members, who are sorely underrepresented in the academy especially in STEM fields, assume essential roles; chief among these roles is diversifying higher education. Their recruitment and retention become more challenging in light of research findings on work life for postsecondary faculty. Research has shown that postsecondary faculty members in general have become increasingly stressed and job satisfaction has declined with dissatisfaction with endeavors and work overload cited as major stressors. In addition to the stresses managed by higher education faculty at large, Black faculty must navigate diversity-related challenges. Illuminating and understanding their experiences can be instrumental in lessening stress and job dissatisfaction, outcomes that facilitate recruitment and retention. This study featured the experiences and perceptions of Black faculty in science education. This study, framed by critical race theory, examines two questions: What characterizes the work life of some Black faculty members who teach, research, and serve in science education? How are race and racism present in the experiences of these postsecondary Black faculty members? A phenomenological approach to the study situates the experiences of the Black participants as valid phenomena worthy of investigation, illuminates their experiences, and seeks to retain the authenticity of their voices.

  13. Blacked Out: Racial and Gender Segregation in Gifted Education 60 Years after "Brown vs. Board of Education"

    Science.gov (United States)

    Ford, Donna Y.; King, Robert A., Jr.

    2014-01-01

    This article examines the under-representation of African American students in gifted education, with attention to how representation differs for Black males and females. We contend that social injustices (e.g., prejudice and discrimination) contribute to racially segregated gifted education classes (Ford, 2013b). For support, gifted…

  14. Insidious Colonialism in Post-Apartheid Education: Interplay of Black Teacher Narratives, Educational Policy and Textbook Analysis

    Science.gov (United States)

    Subreenduth, Sharon

    2013-01-01

    This article focuses on the larger project of identifying oppressive structures (during apartheid more specifically in this instance) and how educational policy/textbooks (post-apartheid) produce transformative knowledge for decolonization. It presents Black South African teacher perceptions and desires of what/how educational policy, history…

  15. Recent Research in Black Sea Region on Assessment in Education (Review)

    Science.gov (United States)

    Pipia, Ekaterine

    2016-01-01

    This article is written to inform educational community particularly in the respect of new tendencies in educational assessment and present a clear-cut picture of the recent studies conducted in the Black Sea Region. The review paper refers to the following countries: Georgia, Russia, Turkey and Ukraine. It stresses the prevalent approach detected…

  16. "Pushed" to Teach: Pedagogies and Policies for a Black Women Educator Pipeline

    Science.gov (United States)

    Gist, Conra D.; White, Terrenda; Bianco, Margarita

    2018-01-01

    This research study examines the learning experiences of 11th- and 12th-grade Black girls participating in a precollegiate program committed to increasing the number of Teachers of Color entering the profession by viewing a teaching career as an act of social justice committed to educational equity. The pipeline functions as an education reform…

  17. Legacy, Loyalty and Leadership: Creating a Pipeline of Indigenous Black Educational Leaders

    Science.gov (United States)

    Ononuju, Ijeoma E.

    2016-01-01

    Educational leadership plays a vital role in improving the academic outcomes of underserved and minority students. The leadership practices of Black educational leaders have contributed to the theorizing of effective, culturally responsive practices to improve student outcomes. This article uses portraiture to look at how one former Black…

  18. Locked in but Locked Out: Death Sentence for the Higher Education of Black Prison Inmates?

    Science.gov (United States)

    Slater, Robert Bruce

    1995-01-01

    Argues that, although there are presently over 20,000 prison inmates, the largest of whom are black, enrolled in higher education programs, by 1996, there may be none. The author provides justification for prisoner rehabilitation, revealing the inadequacy of harsh punishment in stemming crime, and presents reasons why higher education in prisons…

  19. The Role of Subjectivity in Teacher Expertise Development: Mindfully Embracing the "Black Sheep" of Educational Research

    Science.gov (United States)

    Inoue, Noriyuki

    2016-01-01

    In Western cultures, subjectivity has often been seen as the "black sheep" of educational research because of its heavy emphasis on objectivity. Consequently many research initiatives in education share the assumption that objective reasoning should play a central role. However, mentoring teachers' practice improvement research often…

  20. Manga and anime in medical education: leontiasis ossea in ‘Black Jack’

    Directory of Open Access Journals (Sweden)

    Michelle (k/a Mikhaila Muscat, MD, MRCS(Ed, MSc, PG Dip, FRCPath

    2017-02-01

    Full Text Available ‘Black Jack’, the medical manga (Japanese comic/graphical novel by the widely acclaimed godfather of manga, Ozamu Tezuka, follows the dramatized story of the unlicensed surgeon. It spans many manga volumes, and many episodes in the corresponding animated series (commonly referred to as anime, with a key focus on Black Jack’s superior, sensationalized, surgical abilities. This brief review focuses on the presence of a patient with leontiasis ossea at the beginning of the ‘Black Jack 21’ anime series and highlights the use of media such as manga and anime in medical education.

  1. Beating the Odds: How Single Black Mothers Influence the Educational Success of Their Sons Enrolled in Failing Schools

    Science.gov (United States)

    Robinson, Quintin L.; Werblow, Jacob

    2012-01-01

    The academy has given little attention to academically successful Black males and the factors that may lead to their successes. This multiple case study design, however, examined the ways in which single-Black mothers influence the educational success of their sons by focusing on the mothers of academically successful 11th grade Black males. Data…

  2. Fabulachia: Urban, Black Female Experiences and Higher Education in Appalachia

    Science.gov (United States)

    Troutman, Stephanie

    2017-01-01

    This article draws on focus group conversations with black female college students attending a small, liberal arts institution in Kentucky. Based primarily on group interviews and discussions, as well as observations and analysis--a theoretical domain (referred to throughout the article as "Fabulachia") emerged as a site-specific outcome…

  3. Black Women in Nursing Education Completion Programs: Issues Affecting Participation.

    Science.gov (United States)

    Aiken, Lolita Chappel; Cervero, Ronald M.; Johnson-Bailey, Juanita

    2001-01-01

    Interviews with 10 black women enrolled in or graduated from baccalaureate nursing programs identified intrapersonal and cultural factors encouraging their participation. Hindrances were classified as the experience of being the "other" and the culture of racism. Findings show that individual and institutional racism is a barrier in registered…

  4. Searching for Sustainability in Teacher Education and Educational Research: Experiences from the Baltic and Black Sea Circle Consortium for Educational Research

    Science.gov (United States)

    Salite, Ilga

    2015-01-01

    The Baltic and Black Sea Circle Consortium for educational research (BBCC) was established at the beginning of the Decade of Education for Sustainable Development (2005). BBCC has obtained its name in the "Third International Conference Sustainable Development, Culture, Education, in the University of Vechta" (Germany, 2005). The paper…

  5. Mass Functions of the Active Black Holes in Distant Quasars from the Sloan Digital Sky Survey Data Release 3

    DEFF Research Database (Denmark)

    Vestergaard, Marianne; Fan, X.; Tremonti, C. A.

    2007-01-01

    We present the mass functions of actively accreting supermassive black holes over the redshift range 0.3......We present the mass functions of actively accreting supermassive black holes over the redshift range 0.3...

  6. Socio-cultural barriers to physical activity among black isiXhosa ...

    African Journals Online (AJOL)

    Chronic diseases of lifestyle in South Africa are on the increase, as shown by recent studies. Black women, who have the country's highest levels of inactivity, overweight and obesity, are particularly at risk. This study used qualitative methods to investigate barriers to physical activity participation in two generations of Black ...

  7. Diversity and activity of biosurfactant-producing Pseudomonas in the rhizosphere of black pepper in Vietnam

    NARCIS (Netherlands)

    Tran, H.; Kruijt, M.; Raaijmakers, J.M.

    2008-01-01

    Aims: Phytophthora capsici is a major pathogen of black pepper and zoospores play an important role in the infection process. Fluorescent pseudomonads that produce biosurfactants with zoosporicidal activities were isolated from the black pepper rhizosphere in Vietnam, and their genotypic diversity

  8. Contrasting activity patterns of sympatric and allopatric black and grizzly bears

    Science.gov (United States)

    Schwartz, C.C.; Cain, S.L.; Podruzny, S.; Cherry, S.; Frattaroli, L.

    2010-01-01

    The distribution of grizzly (Ursus arctos) and American black bears (U. americanus) overlaps in western North America. Few studies have detailed activity patterns where the species are sympatric and no studies contrasted patterns where populations are both sympatric and allopatric. We contrasted activity patterns for sympatric black and grizzly bears and for black bears allopatric to grizzly bears, how human influences altered patterns, and rates of grizzlyblack bear predation. Activity patterns differed between black bear populations, with those sympatric to grizzly bears more day-active. Activity patterns of black bears allopatric with grizzly bears were similar to those of female grizzly bears; both were crepuscular and day-active. Male grizzly bears were crepuscular and night-active. Both species were more night-active and less day-active when ???1 km from roads or developments. In our sympatric study area, 2 of 4 black bear mortalities were due to grizzly bear predation. Our results suggested patterns of activity that allowed for intra- and inter-species avoidance. National park management often results in convergence of locally high human densities in quality bear habitat. Our data provide additional understanding into how bears alter their activity patterns in response to other bears and humans and should help park managers minimize undesirable bearhuman encounters when considering needs for temporal and spatial management of humans and human developments in bear habitats. ?? 2010 The Wildlife Society.

  9. Modified viscosity in accretion disks. Application to Galactic black hole binaries, intermediate mass black holes, and active galactic nuclei

    Science.gov (United States)

    Grzędzielski, Mikołaj; Janiuk, Agnieszka; Czerny, Bożena; Wu, Qingwen

    2017-07-01

    Aims: Black holes (BHs) surrounded by accretion disks are present in the Universe at different scales of masses, from microquasars up to the active galactic nuclei (AGNs). Since the work of Shakura & Sunyaev (1973, A&A, 24, 337) and their α-disk model, various prescriptions for the heat-production rate are used to describe the accretion process. The current picture remains ad hoc due the complexity of the magnetic field action. In addition, accretion disks at high Eddington rates can be radiation-pressure dominated and, according to some of the heating prescriptions, thermally unstable. The observational verification of their resulting variability patterns may shed light on both the role of radiation pressure and magnetic fields in the accretion process. Methods: We compute the structure and time evolution of an accretion disk, using the code GLADIS (which models the global accretion disk instability). We supplement this model with a modified viscosity prescription, which can to some extent describe the magnetisation of the disk. We study the results for a large grid of models, to cover the whole parameter space, and we derive conclusions separately for different scales of black hole masses, which are characteristic for various types of cosmic sources. We show the dependencies between the flare or outburst duration, its amplitude, and period, on the accretion rate and viscosity scaling. Results: We present the results for the three grids of models, designed for different black hole systems (X-ray binaries, intermediate mass black holes, and galaxy centres). We show that if the heating rate in the accretion disk grows more rapidly with the total pressure and temperature, the instability results in longer and sharper flares. In general, we confirm that the disks around the supermassive black holes are more radiation-pressure dominated and present relatively brighter bursts. Our method can also be used as an independent tool for the black hole mass determination

  10. Political activism and mental health among Black and Latinx college students.

    Science.gov (United States)

    Hope, Elan C; Velez, Gabriel; Offidani-Bertrand, Carly; Keels, Micere; Durkee, Myles I

    2018-01-01

    The current study investigates the utility of political activism as a protective factor against experiences of racial/ethnic (R/E) discrimination that negatively affect stress, anxiety, and depressive symptoms among Black and Latinx college freshmen at predominately White institutions. Data come from the Minority College Cohort Study, a longitudinal investigation of Black and Latinx college students (N = 504; 44% Black). We conducted multiple regression analyses for each mental health indicator and tested for interaction effects. For Black and Latinx students, the relationship between R/E microaggressions and end of freshman year stress varied by political activism. For Black students, the relationship between R/E microaggressions and end of the year anxiety varied by political activism. There was a significant interaction effect for depressive symptoms among Latinx students. Political activism serves as a protective factor to mitigate the negative effect of R/E discrimination on stress and depressive symptoms for Latinx students. For Black students, higher levels of political activism may exacerbate experiences of R/E microaggressions and relate to more stress and anxiety compared with Black students who are less politically involved. Findings point to the need for a deeper understanding of phenomenological variation in experiences of microaggressions among R/E minorities and how students leverage political activism as an adaptive coping strategy to mitigate race-related stress during college. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

  11. "The Rose that Grew from Concrete": Postmodern Blackness and New English Education

    Science.gov (United States)

    Kirkland, David E.

    2008-01-01

    For David E. Kirkland, the New English Education locates English language arts in the realities of youth, where texts emerge from students' lives, and the notions of reading and writing in English classrooms are open to revision. Kirkland reflects on how "postmodern Black experience, especially as seen in hip-hop, gives English teachers one way of…

  12. Migration, Remittances, and Educational Stratification among Blacks in Apartheid and Post-Apartheid South Africa.

    Science.gov (United States)

    Lu, Yao; Treiman, Donald J

    2011-06-01

    This paper extends previous work on family structure and children's education by conceptualizing migration as a distinct form of family disruption that reduces parental input but brings substantial economic benefits through remittances. It examines the multiple and countervailing effects of migration on schooling in the context of substantial migration and limited educational opportunities for Blacks in South Africa. The receipt of remittances substantially increases Black children's school attendance, but has no such effect for Whites. The effect for Blacks is in part attributable to improved household economic conditions that increase household educational spending and reduce the demand for child labor. We also find a negative effect of parental absence due to migration, but it is largely cushioned by inflows of remittances. Sensitivity analyses using propensity score methods and contextual fixed-effect modeling suggest that the beneficial effect of remittances is relatively robust. We find further that remittances help ameliorate inter-familial socioeconomic inequality in schooling. Finally, we evaluate possible temporal changes and show that the positive and equalizing effects of remittances persisted during and after the apartheid regime. We conclude that labor migration and remittances, as institutionalized family strategies adopted by many Blacks, help reconfigure structural opportunities in the educational stratification process in South Africa.

  13. This Bridge Called My Leadership: An Essay on Black Women as Bridge Leaders in Education

    Science.gov (United States)

    Horsford, Sonya Douglass

    2012-01-01

    The purpose of this essay is to contextualize the existing research literature on leadership for diversity, equity, and social justice in education with "bridge leadership" as historically practiced by Black women leaders in the USA. Its primary aim is to demonstrate how the intersection of race and gender as experienced by the Black…

  14. Black School White School: Racism and Educational (Mis) Leadership

    Science.gov (United States)

    Brooks, Jeffrey S.

    2012-01-01

    How do race and race relations influence leadership practice and the education of students? In this timely and provocative book, the author identifies cultural and unstated norms and beliefs around race and race relations, and explores how these dynamics influence the kind of education students receive. Drawing on findings from extensive…

  15. Illuminating the Black Box of Entrepreneurship Education Programs

    Science.gov (United States)

    Maritz, Alex; Brown, Christopher R.

    2013-01-01

    Purpose: The aim of this paper is to explore the components of entrepreneurship education programs (EEPs) and their interrelationships to develop a conceptual framework through which entrepreneurship education may be contextually evaluated and developed. Design/methodology/approach: The paper presents an extensive literature review of the…

  16. Illuminating the Black Box of Entrepreneurship Education Programmes: Part 2

    Science.gov (United States)

    Maritz, Alex

    2017-01-01

    Purpose: The purpose of this paper is to provide a justified, legitimate and validated model on entrepreneurship education programmes (EEPs), by combining recent research and scholarship in leading edge entrepreneurship education (EE). Design/methodology/approach: A systematic literature review of recent EE research and scholarship is followed by…

  17. Black parental involvement in education | Singh | South African ...

    African Journals Online (AJOL)

    The South African Schools Act of 1996 (SASA) provides formal power in education to parents as well as communities. SASA creates the expectation for parents to be meaningful partners in school governance. It envisages a system where school-based educators would collaborate with the parents to ensure quality ...

  18. Mental Health and Educational Experiences Among Black Youth: A Latent Class Analysis.

    Science.gov (United States)

    Rose, Theda; Lindsey, Michael A; Xiao, Yunyu; Finigan-Carr, Nadine M; Joe, Sean

    2017-11-01

    Disproportionately lower educational achievement, coupled with higher grade retention, suspensions, expulsions, and lower school bonding make educational success among Black adolescents a major public health concern. Mental health is a key developmental factor related to educational outcomes among adolescents; however, traditional models of mental health focus on absence of dysfunction as a way to conceptualize mental health. The dual-factor model of mental health incorporates indicators of both subjective wellbeing and psychopathology, supporting more recent research that both are needed to comprehensively assess mental health. This study applied the dual-factor model to measure mental health using the National Survey of American Life-Adolescent Supplement (NSAL-A), a representative cross-sectional survey. The sample included 1170 Black adolescents (52% female; mean age 15). Latent class analysis was conducted with positive indicators of subjective wellbeing (emotional, psychological, and social) as well as measures of psychopathology. Four mental health groups were identified, based on having high or low subjective wellbeing and high or low psychopathology. Accordingly, associations between mental health groups and educational outcomes were investigated. Significant associations were observed in school bonding, suspensions, and grade retention, with the positive mental health group (high subjective wellbeing, low psychopathology) experiencing more beneficial outcomes. The results support a strong association between school bonding and better mental health and have implications for a more comprehensive view of mental health in interventions targeting improved educational experiences and mental health among Black adolescents.

  19. Antioxidant activity of black bean (Phaseolus vulgaris L.) protein hydrolysates

    Science.gov (United States)

    The objective of this work was to study the effect of enzymatic hydrolysis of black bean protein concentrate using different enzymes. Bean proteins were extracted and hydrolyzed over a period of 120 min using the enzymes pepsin or alcalase. The protein hydrolysates’ molecular weight was assayed by e...

  20. Urban black social life and leisure activities in Johannesburg ...

    African Journals Online (AJOL)

    , using art that was created by black artists who lived and worked in Soweto and surrounding areas from the early 1940s up to the mid 1970s. These artists included Gerard Sekoto, Durant Sihlali and Ephraim Ngatane. Works created by these ...

  1. Brain Activities and Educational Technology

    Science.gov (United States)

    Riza, Emel

    2002-01-01

    There are close relationships between brain activities and educational technology. Brain is very important and so complicated part in our bodies. From long time scientists pay attention to that part and did many experiments, but they just reached little information like a drop in the sea. However from time to time they gave us some light to…

  2. Diversity and activity of biosurfactant-producing Pseudomonas in the rhizosphere of black pepper in Vietnam.

    Science.gov (United States)

    Tran, H; Kruijt, M; Raaijmakers, J M

    2008-03-01

    Phytophthora capsici is a major pathogen of black pepper and zoospores play an important role in the infection process. Fluorescent pseudomonads that produce biosurfactants with zoosporicidal activities were isolated from the black pepper rhizosphere in Vietnam, and their genotypic diversity and potential to control Phy. capsici root rot was determined. Biosurfactant-producing pseudomonads were genotypically and biochemically characterized by BOX-polymerase chain reaction (PCR), 16S-rDNA sequencing, reverse-phase-high-performance liquid chromatography and liquid chromatography-mass spectrometry analyses. Biosurfactant-producing fluorescent pseudomonads make up c. 1.3% of the culturable Pseudomonas population in the rhizosphere of black pepper. Although BOX-PCR revealed substantial genotypic diversity, the isolates were shown to produce the same biosurfactants and were all identified as Pseudomonas putida. When applied to black pepper stem cuttings, several of the biosurfactant-producing strains provided significant disease control. In absence of the disease, several of the bacterial strains promoted shoot and root growth of black pepper stem cuttings. Biosurfactant-producing pseudomonads indigenous to the rhizosphere of black pepper plants are genotypically diverse and provide a novel resource for the control of Phy. capsici root rot and growth promotion of black pepper stem cuttings. The results of this study provide a strong basis for further development of supplementary strategies with antagonistic bacteria to control foot and root rot of black pepper and to promote plant growth.

  3. Historically White Universities and Plantation Politics: Anti-Blackness and Higher Education in the Black Lives Matter Era

    Science.gov (United States)

    Dancy, T. Elon, II; Edwards, Kirsten T.; Earl Davis, James

    2018-01-01

    In this article, the authors argue that U.S. colleges and universities must grapple with persistent engagements of Black bodies as property. Engaging the research and scholarship on Black faculty, staff, and students, we explain how theorizations of settler colonialism and anti-Blackness (re)interpret the arrangement between historically White…

  4. Pro-Market Educational Governance: Is Argentina a Black Swan?

    Science.gov (United States)

    Beech, Jason; Barrenechea, Ignacio

    2011-01-01

    In this article we explore ways in which pro-market discourses have been interpreted in policy initiatives in Argentina since the 1970s. Our argument is that even though pro-market discourses have guided reforms in many aspects of public policies in Argentina, the arena of education has overall been resistant to taking them up. The first part of…

  5. Attitudes of White College Education Seniors Toward Blacks.

    Science.gov (United States)

    Erb, David L.

    This study attempted to assess the racial attitudes of white college education seniors and to study the relationship between racial prejudice and the following predictor variables: personal contact, change orientation, religiosity, and efficacy. Three research instruments were used to assess racial attitudes and predictor variables: The Attitude…

  6. A church-based intervention to change attitudes about physical activity among Black adolescent girls: a feasibility study.

    Science.gov (United States)

    Thompson, Wanda M; Berry, Diane; Hu, Jie

    2013-05-01

    To feasibility test a 12-week church-based physical activity intervention that was culturally sensitive, age- and gender specific directed at changing attitudes of Black adolescent girls' to be more physically active. A one-group pre- and posttest design was used. A convenience sample of Black adolescent girls between the age of 12-18 (n = 41). A 60-min 12-week church-based program that included interactive educational sessions followed by a high energy dance aerobics class was used. Data were collected on biophysical measures. Surveys were used to assess the following variables: attitudes, enjoyment, self-efficacy, intention, social and family support, and PA levels. Paired t-tests and repeated measures ANOVA revealed no significant changes in key variables. Positive changes were noted in the odds ratios for attitudes, self-efficacy, and intention. Body mass index, metabolic equivalent tasks, and fitness showed positive trends from pre to post intervention. Family support was significantly correlated with physical activity level (p adolescent girls are feasible. Participants evaluated the intervention very favorably. Family support may be a key factor in increasing physical activity levels in Black adolescent girls. © 2012 Wiley Periodicals, Inc.

  7. EDUCATIONAL INSTITUTION ACTIVITY IN THE INCLUSIVE EDUCATION PROCESS

    OpenAIRE

    Rozenfelde, Marite

    2017-01-01

    The article provides a summary of a theoretical study on the main provisions of the activity of the educational institution’s administration in creating and implementing an inclusive educational process at the institution. Inclusive education is teamwork – the responsibility and obligation shared by the whole educational institution is a challenge to the whole team of the educational institution and first of all, a challenge to the administration of the educational institution. Inclusive educ...

  8. Mirror, Mirror on the Wall: A Critical Examination of the Conceptualization of the Study of Black Racial Identity in Education

    Science.gov (United States)

    Zirkel, Sabrina; Johnson, Tabora

    2016-01-01

    The role that racial identity plays in the well-being, educational achievement, and life outcomes of Black youth has received tremendous attention from the early post-slavery years right up until today, and remains a surprisingly contested area of study. We call for the examination of why images of Black racial identity as "damaged" and…

  9. The Hidden Role of Fraternal Organizations in the Education of Black Adults: Prince Hall Freemasonry as a Case Study

    Science.gov (United States)

    Muraskin, William

    1976-01-01

    Prince Hall Freemasonry is the black branch of the international Freemasonic Order. Its role in the educational development of black Masons over the last 200 years is discussed. The following areas of teaching are the focal points: business administration, community leadership, middle class values, self government, and responsibilities of manhood.…

  10. Racial Battle Fatigue and the "Mis"Education of Black Men: Racial Microaggressions, Societal Problems, and Environmental Stress

    Science.gov (United States)

    Smith, William A.; Hung, Man; Franklin, Jeremy D.

    2011-01-01

    Black men's lives are racialized contradictions, They are told that contemporary educational and professional institutions--particularly historically White institutions (HWls)--are places where, through hard work, they can achieve the so-called American dream. However, for far too many Black men, HWIs represent racial climates that are replete…

  11. Educational Attainment and Smoking Status in a National Sample of American Adults; Evidence for the Blacks' Diminished Return.

    Science.gov (United States)

    Assari, Shervin; Mistry, Ritesh

    2018-04-16

    Although higher socioeconomic status (SES) indicators such as educational attainment are linked with health behaviors, the Blacks’ Diminished Return theory posits that the protective effects of SES are systemically smaller for Blacks than Whites. To explore the Black/White differences in the association between education and smoking. This cross-sectional study used the Health Information National Trends Survey (HINTS) 2017 ( n = 3217). HINTS is a national survey of American adults. The current analysis included 2277 adults who were either Whites ( n = 1868; 82%) or Blacks ( n = 409; 18%). The independent variable was educational attainment, and the dependent variables were ever and current (past 30-day) smoking. Demographic factors (age and gender) were covariates. Race was the focal moderator. In the pooled sample, higher educational attainment was associated with lower odds of ever and current smoking. Race interacted with the effects of higher educational attainment on current smoking, suggesting a stronger protective effect of higher education against current smoking for Whites than Blacks. Race did not interact with the effect of educational attainment on odds of ever smoking. In line with previous research in the United States, education is more strongly associated with health and health behaviors in Whites than Blacks. Smaller protective effects of education on health behaviors may be due to the existing racism across institutions such as the education system and labor market.

  12. Physical active rest in education of active personality of students

    Directory of Open Access Journals (Sweden)

    Zaycev V.P.

    2010-10-01

    Full Text Available Meaningfulness of physical recreation is rotined in education of active personality of students. Research material is literary sources on this issue. Factors which influence on an educate function of personality of students are considered. Application of physical recreation is grounded for education of active personality of students. It is marked that physical recreation in pedagogical process decides educate, educational, health and social tasks. It positively influences on education of active personality of students. It is rotined that in education of active personality of students an important role is played by their research activity.

  13. Radical-scavenging-linked antioxidant activities of extracts from black chokeberry and blueberry cultivated in Korea.

    Science.gov (United States)

    Hwang, Seok Joon; Yoon, Won Byong; Lee, Ok-Hwan; Cha, Seung Ju; Kim, Jong Dai

    2014-03-01

    The objective of this study was to investigate the radical-scavenging-linked antioxidant properties of the extracts from black chokeberry and blueberry cultivated in Korea. The 70% ethanol extracts were prepared from black chokeberry and blueberry, and evaluated for total phenolic content, total flavonoid content, total proanthocyanidin content, and antioxidative activities, using various in vitro assays, such as DPPH(2,2-diphenyl-1-picrylhydrazyl), ABTS(2,2-azino-bis-(3-ethylenebenzothiozoline-6-sulphonic acid)) radical-scavenging activity, FRAP(ferric-reducing antioxidant power) and reducing power. The major phenolic compounds, including cyanidin-3-galactoside, cyanidin-3-arabinoside, neochlorogenic acid, procyanidin B1, were analysed by HPLC with a photodiode array detector. Results showed that total phenol, flavonoid and proanthocyanidin contents of black chokeberry extract were higher than those of blueberry extract. In addition, black chokeberry extract exhibited higher free radical-scavenging activity and reducing power than did blueberry extract. Cyanidin-3-galactoside was identified as a major phenolic compound, with considerable content in black chokeberry, that correlated with its higher antioxidant and radical-scavenging effects. These results suggest that black chokeberry extracts could be considered as a good source of natural antioxidants and functional food ingredients. Copyright © 2013 Elsevier Ltd. All rights reserved.

  14. An actively accreting massive black hole in the dwarf starburst galaxy Henize 2-10.

    Science.gov (United States)

    Reines, Amy E; Sivakoff, Gregory R; Johnson, Kelsey E; Brogan, Crystal L

    2011-02-03

    Supermassive black holes are now thought to lie at the heart of every giant galaxy with a spheroidal component, including our own Milky Way. The birth and growth of the first 'seed' black holes in the earlier Universe, however, is observationally unconstrained and we are only beginning to piece together a scenario for their subsequent evolution. Here we report that the nearby dwarf starburst galaxy Henize 2-10 (refs 5 and 6) contains a compact radio source at the dynamical centre of the galaxy that is spatially coincident with a hard X-ray source. From these observations, we conclude that Henize 2-10 harbours an actively accreting central black hole with a mass of approximately one million solar masses. This nearby dwarf galaxy, simultaneously hosting a massive black hole and an extreme burst of star formation, is analogous in many ways to galaxies in the infant Universe during the early stages of black-hole growth and galaxy mass assembly. Our results confirm that nearby star-forming dwarf galaxies can indeed form massive black holes, and that by implication so can their primordial counterparts. Moreover, the lack of a substantial spheroidal component in Henize 2-10 indicates that supermassive black-hole growth may precede the build-up of galaxy spheroids.

  15. Active galactic nucleus black hole mass estimates in the era of time domain astronomy

    Energy Technology Data Exchange (ETDEWEB)

    Kelly, Brandon C.; Treu, Tommaso; Pancoast, Anna [Department of Physics, Broida Hall, University of California, Santa Barbara, CA 93106-9530 (United States); Malkan, Matthew [Department of Astronomy, 430 Portola Plaza, Box 951547, University of California, Los Angeles, CA 90095-1547 (United States); Woo, Jong-Hak [Department of Physics and Astronomy, Seoul National University, Seoul 151-742 (Korea, Republic of)

    2013-12-20

    We investigate the dependence of the normalization of the high-frequency part of the X-ray and optical power spectral densities (PSDs) on black hole mass for a sample of 39 active galactic nuclei (AGNs) with black hole masses estimated from reverberation mapping or dynamical modeling. We obtained new Swift observations of PG 1426+015, which has the largest estimated black hole mass of the AGNs in our sample. We develop a novel statistical method to estimate the PSD from a light curve of photon counts with arbitrary sampling, eliminating the need to bin a light curve to achieve Gaussian statistics, and we use this technique to estimate the X-ray variability parameters for the faint AGNs in our sample. We find that the normalization of the high-frequency X-ray PSD is inversely proportional to black hole mass. We discuss how to use this scaling relationship to obtain black hole mass estimates from the short timescale X-ray variability amplitude with precision ∼0.38 dex. The amplitude of optical variability on timescales of days is also anticorrelated with black hole mass, but with larger scatter. Instead, the optical variability amplitude exhibits the strongest anticorrelation with luminosity. We conclude with a discussion of the implications of our results for estimating black hole mass from the amplitude of AGN variability.

  16. Rapid and Bright Stellar-mass Binary Black Hole Mergers in Active Galactic Nuclei

    Science.gov (United States)

    Bartos, Imre; Kocsis, Bence; Haiman, Zoltán; Márka, Szabolcs

    2017-02-01

    The Laser Interferometer Gravitational-wave Observatory (LIGO) found direct evidence for double black hole binaries emitting gravitational waves. Galactic nuclei are expected to harbor the densest population of stellar-mass black holes. A significant fraction (˜ 30 % ) of these black holes can reside in binaries. We examine the fate of the black hole binaries in active galactic nuclei, which get trapped in the inner region of the accretion disk around the central supermassive black hole. We show that binary black holes can migrate into and then rapidly merge within the disk well within a Salpeter time. The binaries may also accrete a significant amount of gas from the disk, well above the Eddington rate. This could lead to detectable X-ray or gamma-ray emission, but would require hyper-Eddington accretion with a few percent radiative efficiency, comparable to thin disks. We discuss implications for gravitational-wave observations and black hole population studies. We estimate that Advanced LIGO may detect ˜20 such gas-induced binary mergers per year.

  17. Thirty Years of Meteorological Education at a Historically Black University

    Science.gov (United States)

    White, Loren D.; Reddy, R. S.; Liu, Heping; Williams, Quinton; Shoemake, John

    2013-01-01

    Since 1975, the Jackson State University Meteorology Program (JSUMP) has played a unique role in the preparation of minorities for careers in the atmospheric sciences. Through external partnerships, incorporation of undergraduate research, summer internships, and involvement in activities of the professional societies, the JSUMP has graduated…

  18. Social Cognitive Correlates of Physical Activity in Black Individuals With Multiple Sclerosis.

    Science.gov (United States)

    Kinnett-Hopkins, Dominique; Motl, Robert W

    2016-04-01

    To examine variables from social cognitive theory as correlates of physical activity in black and white individuals with multiple sclerosis (MS). Cross-sectional. National survey. Black (n=151) and white (n=185) individuals with MS were recruited through the North American Research Committee on Multiple Sclerosis Registry. Not applicable. The battery of questionnaires included information on demographic and clinical characteristics, physical activity, exercise self-efficacy, function, social support, exercise outcome expectations, and exercise goal setting and planning. Black individuals with MS reported significantly lower levels of physical activity compared with white individuals with MS. Physical activity levels were significantly correlated with self-efficacy, outcome expectations, functional limitations as impediments, and goal setting in black participants with MS. The pattern and magnitude of correlations were comparable with those observed in white participants based on Fisher z tests. Researchers should consider applying behavioral interventions that target social cognitive theory variables for increasing physical activity levels among black individuals with MS. Copyright © 2016 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

  19. Activities and Education in Logistics

    Directory of Open Access Journals (Sweden)

    Jasmina Pašagić Škrinjar

    2008-03-01

    Full Text Available Logistic approach to traffic means new business policy,economy and ownership, new internal organization, externaland internal communication, different corporate cultures, humanresources management using scientific methods, trainingand education, changed management type and awarding system,knowledge of information technology, communicationskills, electronic commerce, etc. Education is part of all theseelements. The introduction of logistics in all the business activitieshas been imposed due to the following reasons: because ofthe life-cycle shortening of the product and its delivery, becauseof sudden technological development, because of productionand market globalization, because of the increase in competitiveness.This paper describes first various logistic activities with theindication of practical and scientific approaches. The logisticsapproach in the traffic activities requires upgrading of the professionaland scientific level to a higher one which means additionaltraining and acquiring of new skills as well as new technologiesfor the employees.The basic aim of research was to specifY the basic logisticsactivities and problems in order to indicate the need of differentforms of education. Fast technological and social changes requireconstant improvement and modification of professionalknowledge and acqui1ing of new scientific methods and skills.

  20. Black Crowberry (Empetrum nigrum L. Flavonoids and Their Health Promoting Activity

    Directory of Open Access Journals (Sweden)

    Tunde Jurikova

    2016-12-01

    Full Text Available Nowadays, much research attention is focused on underutilized berry crops due to the high antioxidant activity of fruits. Black crowberry (Empetrum nigrum L. represents an important source of flavonols (quercetin, rutin, myricetin, naringenin, naringin, morin, and kaempferol and anthocyanins. The fruit components could be utilised as natural colourants or as a part of functional foods and, because of the high antioxidant activity, the berries of black crowberry can be used in the treatment of diseases accompanied with inflammation, or as an effective antibacterial and antifungal remedy. Moreover, the reduction of lipid accumulation and total cholesterol as well as an improvement of postprandial hyperglycaemia have been proven. This review summarizes for the first time the main antioxidants (flavonoids of black crowberry fruits, with a focus on their health promoting activity.

  1. Gender, Ethnicity, and Physics Education: Understanding How Black Women Build Their Identities as Scientists

    Science.gov (United States)

    Rosa, Katemari Diogo da

    This research focuses on the underrepresentation of minoritized groups in scientific careers. The study is an analysis of the relationships between race, gender, and those with careers in the sciences, focusing on the lived experiences of Black women physicists, as viewed through the lens of women scientists in the United States. Although the research is geographically localized, the base-line question is clear and mirrors in the researcher's own intellectual development: "How do Black women physicists describe their experiences towards the construction of a scientific identity and the pursuit of a career in physics?" Grounded on a critical race theory perspective, the study uses storytelling to analyze how these women build their identities as scientists and how they have negotiate their multiple identities within different communities in society. Findings show that social integration is a key element for Black women physicists to enter study groups, which enables access to important resources for academic success in STEM. The study has implications for physics education and policymakers. The study reveals the role of the different communities that these women are part of, and the importance of public policies targeted to increase the participation of underrepresented groups in science, especially through after-school programs and financial support through higher education.

  2. The Training of Qualified Specialists in the Countries of the Black Sea Region in the Context of Globalization Education Processes

    Directory of Open Access Journals (Sweden)

    Sheludko Inna

    2017-06-01

    Full Text Available The article presents the trends in higher education development in the countries of the Black Sea region, namely, historical, methodological, methodical and technological, which determine the objective and subjective connections and relationships that are common to the system of higher pedagogical education of the countries under study and define persistent pursuit of modernization and transformation of the nature, content, structure, functions, ways of management approaches to the education process, forms, methods, tools and techniques of teaching students. The trends in the public-authoritarian model of higher education have been revealed. It has been found out that the leading trend in Ukraine and other countries of the Black Sea is the governance and financing of future teachers with appropriate management functions and control that significantly affects the organizational structure of higher education. The features of a modern system of higher pedagogical education in the Black Sea region are the system of higher education institutions; main directions of modern reforms in higher education; functioning of leading universities that prepare teachers, their types, characteristics of structural units, students. According to the areas in development of higher pedagogical education in the Black Sea region, we have divided the trends into four groups: historical, methodological, methodical, technological, that are top priority for education systems.

  3. Concurrent Activity of Anammox and Denitrifying Bacteria in the Black Sea

    OpenAIRE

    John B. Kirkpatrick; John B. Kirkpatrick; Clara A. Fuchsman; Evgeniy eYakushev; James T. Staley; James W. Murray

    2012-01-01

    After the discovery of ANaerobic AMMonium OXidation (anammox) in the Black Sea in 2003, the role of heterotrophic denitrification as the main marine pathway for fixed N loss was questioned. A 3 part, 15 month time series investigating Black Sea nitrite reductase (nirS) mRNA transcripts at a single location was conducted in order to better understand the activity of anammox and denitrifying bacteria. Here we show that both of these groups were active, as well as being concurrent in the lower s...

  4. Black hole astrophysics

    International Nuclear Information System (INIS)

    Blandford, R.D.; Thorne, K.S.

    1979-01-01

    Following an introductory section, the subject is discussed under the headings: on the character of research in black hole astrophysics; isolated holes produced by collapse of normal stars; black holes in binary systems; black holes in globular clusters; black holes in quasars and active galactic nuclei; primordial black holes; concluding remarks on the present state of research in black hole astrophysics. (U.K.)

  5. Seasonal variation in American black bear Ursus americanus activity patterns: Quantification via remote photography

    Science.gov (United States)

    Bridges, A.S.; Vaughan, M.R.; Klenzendorf, S.

    2004-01-01

    Activity pattern plasticity may serve as an evolutionary adaptation to optimize fitness in an inconstant environment, however, quantifying patterns and demonstrating variation can be problematic. For American black bears Ursus americanus, wariness and habitat inaccessibility further complicate quantification. Radio telemetry has been the primary technique used to examine activity, however, interpretation error and limitation on numbers of animals available to monitor prevent extrapolation to unmarked or untransmittered members of the population. We used remote cameras to quantify black bear activity patterns and examined differences by season, sex and reproductive class in the Alleghany Mountains of western Virginia, USA. We used 1,533 pictures of black bears taken during 1998-2002 for our analyses. Black bears generally were diurnal in summer and nocturnal in autumn with a vespertine activity peak during both seasons. Bear-hound training seasons occurred during September and may offer explanation for the observed shift towards nocturnal behaviour. We found no substantial differences in activity patterns between sex and reproductive classes. Use of remote cameras allowed us to efficiently sample larger numbers of individual animals and likely offered a better approximation of population-level activity patterns than individual-level, telemetry-based methodologies.

  6. The Training of Qualified Specialists in the Countries of the Black Sea Region in the Context of Globalization Education Processes

    Science.gov (United States)

    Sheludko, Inna

    2017-01-01

    The article presents the trends in higher education development in the countries of the Black Sea region, namely, historical, methodological, methodical and technological, which determine the objective and subjective connections and relationships that are common to the system of higher pedagogical education of the countries under study and define…

  7. Landscape scale attributes of elk centers of activity in the central Black Hills of South Dakota

    Science.gov (United States)

    Cynthia H. Stubblefield; Kerri T. Vierling; Mark A. Rumble

    2006-01-01

    We researched the environmental attributes (n = 28) associated with elk (n = 50) summer range (1 May ­30 Sep) in the central Black Hills of South Dakota, USA, during 1998-­2001. We defined high-use areas or centers of activity as landscapes underlying large concentrations of elk locations resulting from the shared fidelity of...

  8. PS-InSAR Monitoring of Landslide Activity in the Black Sea Coast of the Caucasus

    NARCIS (Netherlands)

    Kiseleva, E.; Mikhailov, V.; Smolyaninova, E.; Dmitriev, P.; Golubev, V.; Timoshkina, E.; Hooper, A.; Samiei-Esfahany, S.; Hanssen, R.F.

    2014-01-01

    The landslide activity in the area of Bolshoy Sochi (Big Sochi) situated at the Black Sea coast of the Great Caucasus has been studied using the StaMPS PS-InSAR method. We incorporated three sets of radar images from the satellites with different wavelengths ALOS, Envisat and Terra-SAR-X from both

  9. Fit and Phat: Black College Women and Their Relationship with Physical Activity, Obesity and Campus Recreation Facilities

    Science.gov (United States)

    Carter-Francique, Akilah R.

    2011-01-01

    The purpose of this paper was to recognize factors that contribute to Black female college students adoption of physically active behaviors. In addition, this paper acknowledges the prevalence of obesity in the United States for Black women, and examines the relationship between body mass index, physical activity and use of campus recreation…

  10. Scholarly Black Market.

    Science.gov (United States)

    Sorooshian, Shahryar

    2017-04-01

    Fake and unethical publishers' activities are known by most of the readers of Science and Engineering Ethics. This letter tries to draw the readers' attention to the hidden side of some of these publishers' business. Here the black market of scholarly articles, which negatively affects the validity and reliability of research in higher education, as well as science and engineering, will be introduced.

  11. A SCALING RELATION BETWEEN MEGAMASER DISK RADIUS AND BLACK HOLE MASS IN ACTIVE GALACTIC NUCLEI

    International Nuclear Information System (INIS)

    Wardle, Mark; Yusef-Zadeh, Farhad

    2012-01-01

    Several thin, Keplerian, sub-parsec megamaser disks have been discovered in the nuclei of active galaxies and used to precisely determine the mass of their host black holes. We show that there is an empirical linear correlation between the disk radius and the black hole mass. We demonstrate that such disks are naturally formed by the partial capture of molecular clouds passing through the galactic nucleus and temporarily engulfing the central supermassive black hole. Imperfect cancellation of the angular momenta of the cloud material colliding after passing on opposite sides of the hole leads to the formation of a compact disk. The radial extent of the disk is determined by the efficiency of this process and the Bondi-Hoyle capture radius of the black hole, and naturally produces the empirical linear correlation of the radial extent of the maser distribution with black hole mass. The disk has sufficient column density to allow X-ray irradiation from the central source to generate physical and chemical conditions conducive to the formation of 22 GHz H 2 O masers. For initial cloud column densities ∼ 23.5 cm –2 the disk is non-self-gravitating, consistent with the ordered kinematics of the edge-on megamaser disks; for higher cloud columns the disk would fragment and produce a compact stellar disk similar to that observed around Sgr A* at the galactic center.

  12. Effects of black liquor shocks on activated sludge treatment of bleached kraft pulp mill wastewater.

    Science.gov (United States)

    Morales, Gabriela; Pesante, Silvana; Vidal, Gladys

    2015-01-01

    Kraft pulp mills use activated sludge systems to remove organic matter from effluents. Process streams may appear as toxic spills in treatment plant effluents, such as black liquor, which is toxic to microorganisms of the activated sludge. The present study evaluates the effects of black liquor shocks in activated sludge systems. Four black liquor shocks from 883 to 3,225 mg chemical oxygen demand-COD L(-1) were applied during 24 hours in a continuously operating lab-scale activated sludge system. Removal efficiencies of COD, color and specific compounds were determined. Moreover, specific oxygen uptake rate (SOUR), sludge volumetric index (SVI) and indicator microorganisms were evaluated. Results show that the addition of black liquor caused an increase in COD removal (76-67%) immediately post shock; followed two days later by a decrease (-19-50%). On the other hand, SOUR ranged between 0.152 and 0.336 mgO2 g(-1) volatile suspended solids-VSS• min(-1) during shocks, but the initial value was reestablished at hour 24. When the COD concentration of the shock was higher than 1,014 mg/L, the abundance of stalked ciliates and rotifers dropped. Finally, no changes in SVI were observed, with values remaining in the range 65.8-40.2 mL g(-1) total suspended solids-TSS during the entire operating process. Based on the results, the principal conclusion is that the activated sludge system with the biomass adapted to the kraft pulp effluent could resist a black liquor shock with 3,225 mgCOD L(-1) of concentration during 24 h, under this study's conditions.

  13. Anti-complement activity of essential oils from red and black rice bran.

    Science.gov (United States)

    Chung, Ill-Min; Yeo, Min-A; Kim, Sun-Jin; Moon, Hyung-In

    2011-05-01

    The volatile essential oils from red and black rice bran were obtained by hydrodistillation using a clevenger-type apparatus, and the components of that oil were analyzed by capillary gas chromatography-mass spectroscopy (GC-MS). The present study involved characterizing the chemical compositions, their amounts and the anti-complement activities of red and black rice bran. The red rice bran essential oils yield was 0.031%, and GC-MS analysis revealed that its major constituents were (E)-β-ocimene (3.12%), nonanal (11.32%), (2E, 4E)-decadienal (2.54%), myristic acid (41.32%), geranyactone (2.41%) and methyl oleate (2.46%). The black rice bran essential oils yield was 0.053%, and GC-MS analysis revealed that its major constituents were nonanal (8.31%), acrylic acid (3.21%), 2-hydroxy-6-methylbenzaldehyde (2.81%), pelargonic acid (4.21%) and myrisitc acid (28.07%). The essential oils showed inhibitory activity against complement system with 50% inhibitory concentrations (IC(50)) values of 246 ppm (red rice bran) and 193 ppm (black rice bran). Also, myristic acid, nonanal, (E)-β-ocimene and pelargonic acid were tested against complement system. Pelargonic acid was shown to moderate activity (50% inhibitory concentration = 132 μM).

  14. “They think you’re lazy,” and Other Messages Black Parents Send Their Black Sons: An Exploration of Critical Race Theory in the Examination of Educational Outcomes for Black Males

    Directory of Open Access Journals (Sweden)

    Rema Reynolds

    2010-05-01

    Full Text Available Parents play an integral role in the social, emotional, physical, and intellectual development of their children. We know that school success has been associated with parents’ involvement and engagement1 practices. Studies have shown that despite socioeconomic disparities, children whose parents are involved perform markedly better than those whose parents are not. Little research has looked exclusively at parent involvement and its effects on the educational outcomes of Black males. A qualitative study conducted with Black parents and their involvement and engagement practices as the focus proved that this relationship warrants scholarly attention using Critical Race Theory as a tool for examination. Parents in this study were involved in their children’s educational processes in ways not always validated or valued by schools. Instead of engaging in conventional forms of involvement such as volunteering in the classroom, parents spent time and resources supplementing their children’s education at home. Subtle acts of racism manifested through microaggressions were detected by parents when interfacing with school officials2 and these exchanges prompted candid conversations with their sons. According to the parents in this study, deliberate messages about racism and educator expectations were often critical supplements for their Black sons in order to ensure educational success.

  15. In vitro and in vivo antioxidant activities of polyphenol extracted from black garlic

    Directory of Open Access Journals (Sweden)

    Weidong WANG

    Full Text Available Abstract This study investigated the in vitro and in vivo antioxidant activities of polyphenol extracted from black garlic. Black garlic polyphenol (BGP was extracted from black garlic. The in vitro antioxidant activities of BGP were determined using DPPH·, OH and O2– radical scavenging assays. The in vivo antioxidant activities were determined by detecting the malondialdehyde (MDA content and superoxide dismutase (SOD and glutathione peroxidase (GSH-Px activities in mice. Results showed that, the DPPH· radical inhibition rate of 200 and 250 μg/mL BGP was equivalent with Vc (P > 0.05. With concentration of 400 and 500 μg/mL, the OH radical inhibition rate of BGP was slightly lower than Vc (P > 0.05. The O2– radical inhibition rates of 200, 400, 600, 800 and 1000 μg/mL BGP were significantly lower than Vc (P < 0.05. In the groups treated with BGP with suitable dose, the serum MDA content was significantly decreased compared with model group (P < 0.05, and the serum SOD and GSH-Px activities were significantly increased (P < 0.05. BGP has obvious DPPH· and ·OH radical scavenging activities, and can significantly decrease the serum MDA content in mice with oxidative damage, and increase the serum SOD and GSH-Px activities.

  16. Incorporating active learning in psychiatry education.

    Science.gov (United States)

    Kumar, Sonia; McLean, Loyola; Nash, Louise; Trigwell, Keith

    2017-06-01

    We aim to summarise the active learning literature in higher education and consider its relevance for postgraduate psychiatry trainees, to inform the development of a new Formal Education Course (FEC): the Master of Medicine (Psychiatry) at the University of Sydney. We undertook a literature search on 'active learning', 'flipped classroom', 'problem-based learning' and 'psychiatry education'. The effectiveness of active learning pedagogy in higher education is well supported by evidence; however, there have been few psychiatry-specific studies. A new 'flipped classroom' format was developed for the Master of Medicine (Psychiatry). Postgraduate psychiatry training is an active learning environment; the pedagogical approach to FECs requires further evaluation.

  17. Risk factors for teenage pregnancy among sexually active black ...

    African Journals Online (AJOL)

    Motivation. Teenage pregnancy is an important health and social problem in South Africa. So far research on adolescent sexual activity has been almost exclusively descriptive; as a result there is considerable knowledge about practices of adolescents in general and outcomes of their pregnancies, but very limited ...

  18. Antiproliferative activity of protein extracts from the black clam ...

    African Journals Online (AJOL)

    Hiessu

    2016-02-24

    Feb 24, 2016 ... 2F2 showed IC50 values of 67.46 µg/ml on HeLa cells. These results suggest that protein extracts from. C. fluctifraga might be potential anticancer agents. Key words: Protein extracts, clam, antiproliferative activity, breast cancer, cervical cancer. INTRODUCTION. Cancer is a worldwide health issue; it is not ...

  19. Body image and physical activity among black university students in ...

    African Journals Online (AJOL)

    Physical activity was strongly associated with appearance evaluation, fitness orientation, fitness evaluation, health orientation and weakly associated with appearance orientation and illness orientation. BMI was associated with overweight preoccupation and self-classified weight. Fitness orientation, health evaluation and ...

  20. Black Culture

    Directory of Open Access Journals (Sweden)

    Angela Khristin Brown

    2013-07-01

    Full Text Available The migration of blacks in North America through slavery became united.  The population of blacks past downs a tradition of artist through art to native born citizens. The art tradition involved telling stories to each generation in black families. The black culture elevated by tradition created hope to determine their personal freedom to escape from poverty of enslavement and to establish a way of life through tradition. A way of personal freedoms was through getting a good education that lead to a better foundation and a better way of life.

  1. Black Ink of Activated Carbon Derived From Palm Kernel Cake (PKC)

    Science.gov (United States)

    Selamat, M. H.; Ahmad, A. H.

    2009-06-01

    Recycling the waste from natural plant to produce useful end products will benefit many industries and help preserve the environment. The research reported in this paper is an investigation on the use of the natural waste of palm kernel cake (PKC) to produce carbon residue as a black carbon for pigment source by using pyrolysis process. The activated carbons (AC) is produced in powder form using ball milling process. Rheological spectra in ink is one of quality control process in determining its performance properties. Findings from this study will help expand the scientific knowledge-base for black ink production and formulation base on PKC. Various inks with different weight percentage compositions of AC will be made and tested against its respective rheological properties in order to determine ideal ink printing system. The items in the formulation used comprised of organic and bio-waste materials with added additive to improve the quality of the black ink. Modified Polyurethane was used as binder. The binder's properties highlighted an ideal vehicle to be applied for good black ink opacity performance. The rheological behaviour is a general foundation for ink characterization where the wt% of AC-PKC resulted in different pseudoplastic behaviors, including the Newtonian behavior. The result found that Newtonian field was located in between 2 wt% and 10 wt% of AC-PKC composition with binder. Mass spectroscopy results shown that the carbon content in PKC is high and very suitable for black performance. In the ageing test, the pigment of PKC perform fairly according to the standard pigment of Black carbon (CB) of ferum oxide pigment. The contact angle for substrate's wettability of the ink system shown a good angle proven to be a water resistive coating on paper subtrates; an advantage of the PKC ink pigment performance.

  2. Black Hole growth and star formation activity in the CDFS

    Science.gov (United States)

    Brusa, Marcella; Fiore, Fabrizio

    2010-07-01

    We present a study of the properties of obscured Active Galactic Nuclei (AGN) detected in the CDFS 1Ms observation and their host galaxies. We limited the analysis to the MUSIC area, for which deep K-band observations obtained with ISAACatVLT are available, ensuring accurate identifications of the counterparts of the X-ray sources as well as reliable determination of photometric redshifts and galaxy parameters, such as stellar masses and star formation rates. Among other findings, we found that the X-ray selected AGN fraction increases with the stellar mass up to a value of 30% at z>1 and M*>3×1011 M.

  3. The Black Hole Mass-Bulge Luminosity Relationship for Active Galactic Nuclei From Reverberation Mapping and Hubble Space Telescope Imaging

    DEFF Research Database (Denmark)

    Bentz, Misty C.; Peterson, Bradley M.; Pogge, Richard W.

    2009-01-01

    We investigate the relationship between black hole mass and bulge luminosity for active galactic nuclei (AGNs) with reverberation-based black hole mass measurements and bulge luminosities from two-dimensional decompositions of Hubble Space Telescope host galaxy images. We find that the slope...... of the relationship for AGNs is 0.76-0.85 with an uncertainty of ~0.1, somewhat shallower than the M BH vprop L 1.0±0.1 relationship that has been fit to nearby quiescent galaxies with dynamical black hole mass measurements. This difference is somewhat perplexing, as the AGN black hole masses include an overall...

  4. Environmental Education and Small Business Environmental Activity

    Science.gov (United States)

    Redmond, Janice; Walker, Beth

    2011-01-01

    Environmental education is seen as a key driver of small business environmental management, yet little is known about the activities small business owner-managers are undertaking to reduce their environmental impact or in what areas they may need education. Therefore, research that can identify environmental management activities being undertaken…

  5. Entrepreneurship education: relationship between education and entrepreneurial activity.

    Science.gov (United States)

    Raposo, Mário; do Paço, Arminda

    2011-08-01

    The importance of entrepreneurial activity for the economic growth of countries is now well established. The relevant literature suggests important links between education, venture creation and entrepreneurial performance, as well as between entrepreneurial education and entrepreneurial activity. The primary purpose of this paper is to provide some insights about entrepreneurship education. The meaning of entrepreneurship education is explained, and the significant increase of these educational programmes is highlighted. Literature has been suggesting that the most suitable indicator to evaluate the results of entrepreneurship education is the rate of new business creation. However, some studies indicate that the results of such programmes are not immediate. Therefore, many researchers try to understand the precursors of venture creation, concluding that is necessary to carry out longitudinal studies. Based on an overview of the research published about the existing linkage of entrepreneurship education and entrepreneurial activity, the main topics studied by different academics are addressed. For the authors, the positive impact of entrepreneurship education puts a double challenge on governments in the future: the increased need of financial funds to support entrepreneurship education and the choice of the correct educational programme.

  6. CATECHIN CONTENT AND ANTIOXIDANT ACTIVITY OF SOME BREWED TEMPERATURE OF BLACK TEA SYRUP

    Directory of Open Access Journals (Sweden)

    Tuty Anggraini

    2011-12-01

    Full Text Available The catechin contents and the antioxidant activity of black tea syrup that brewed at some temperature still poorly understood. It has been investigated whether catechin contents and antioxidant activity of black tea syrup may be affected by hot or cold water.  The temperature of 30°C, 60°C, and 90°C were used to brew the syrup, and then the catechin and the antioxidant were determined at each temperature by using DPPH radical scavenging activity method. Measurement of DPPH was conducted for 2 minutes reaction time. Catechin contents were determined by using HPLC method. The result of research showed that the catechin and the antioxidant activity affected by temperature tested. Five kinds of catechin derivatives detected in black tea syrup, EGC (epigallocatechin, C (catechin, EGCG (epigallocatechin gallate, EC (epicatechin and ECG (epicatechin gallate. The highest DPPH scavenging activity of black tea syrup was showed by 30°C.ABSTRAKKandungan katechin dan aktivitas antioksidan dari sirup teh hitam yang diseduh pada beberapa temperatur masih belum begitu dipahami. Pada penelitian ini telah diselidiki apakan kandungan katechin dan aktioksidan dipengaruhi oleh air dingin atau air panas. Temperatur 30oC, 60oC, dan 90oC digunakan untuk menyeduh sirup teh hitam lalu ditentukan kandungan katechin dan aktifitas antioksidannya pada masing-masing temperatur menggunakan metode aktifitas perangkap radikal bebas DPPH (dyphenyl pycrylhydrazyl. Pengukuran DPPH dilakukan selama waktu reaksi dua menit. Kandungan katechin ditentukan menggunakan metode HPLC (High Performance Liquid Chromatography. Hasil penelitian menunjukkan bahwa kandungan katechin dan aktifitas antioksidan sirup teh hitam dipengaruhi oleh temperatur yang diuji. Lima jenis turunan katechin terdeteksi dalam sirup teh hitam yaitu EGC (epigallocatechin, C (catechin, EGCG (epigallocatechin gallate, EC (epicatechin and ECG (epicatechin gallate. Aktifitas perangkap DPPH tertinggi dari sirup teh

  7. Patterns, levels and correlates of self-reported physical activity in urban black Soweto women.

    Science.gov (United States)

    Gradidge, Philippe Jean-Luc; Crowther, Nigel J; Chirwa, Esnat D; Norris, Shane A; Micklesfield, Lisa K

    2014-09-08

    Urban black South African women have a high prevalence of non-communicable diseases such as obesity and type 2 diabetes. The aim of this study was to assess the physical activity patterns of a cohort of middle-aged urban-dwelling black African women and to determine if physical activity is associated with anthropometric measures and metabolic outcomes in this population. Physical activity and sitting time were assessed using the Global Physical Activity Questionnaire (GPAQ) in a cross-sectional study of 977 black African women (mean age 41.0 ± 7.84 years) from the Birth to Twenty study based in Soweto, Johannesburg. Anthropometric outcomes were measured and fasting blood glucose, insulin and lipid profile were analysed to determine metabolic disease risk and prevalence. Sixty-seven percent of the population were classified as active according to GPAQ criteria, and the domain that contributed most to overall weekly physical activity was walking for travel. Only 45.0% of women participated in leisure time activity. The prevalence of metabolic syndrome in this sample was 40.0%, and the prevalence of overweight and obesity was 29.2% and 48.0%, respectively. Women who reported owning a motor vehicle walked for travel less, and participated in more leisure-time activity (both p travel (both p travel is a major contributor to physical activity, future research should attempt to determine whether the intensity of this activity plays a role in the prevention of cardiometabolic diseases.

  8. Popular Visual Images and the (Mis)Reading of Black Male Youth: A Case for Racial Literacy in Urban Preservice Teacher Education

    Science.gov (United States)

    Sealey-Ruiz, Yolanda; Greene, Perry

    2015-01-01

    In the majority of public schools across the nation, Black male youth are undergoing what can be deemed as "educational genocide"--the killing off of any chances for an equitable education. This dramatically decreases opportunities for Black male youth to develop into fully participating citizens in a democratic society. In many ways,…

  9. In vitro Serotonergic Activity of Black Cohosh and Identification of Nω-Methylserotonin as a Potential Active Constituent

    Science.gov (United States)

    POWELL, SHARLA L.; GÖDECKE, TANJA; NIKOLIC, DEJAN; CHEN, SHAO-NONG; AHN, SOYOUN; DIETZ, BIRGIT; FARNSWORTH, NORMAN R.; VAN BREEMEN, RICHARD B.; LANKIN, DAVID; PAULI, GUIDO F.; BOLTON, JUDY L.

    2013-01-01

    Cimicifuga racemosa(L.) Nutt. (syn. Actaea racemosa L., black cohosh) is used to relieve menopausal hot flashes, although clinical studies have provided conflicting data, and the active constituent(s) and mechanism(s) of action remain unknown. Since serotonergic receptors and transporters are involved with thermoregulation, black cohosh and its phytoconstituents were evaluated for serotonergic activity using 5-HT7 receptor binding, cAMP induction, and serotonin selective reuptake inhibitor (SSRI) assays. Crude extracts displayed 5-HT7 receptor binding activity and induced cAMP production. Fractionation of the methanol extract lead to isolation of phenolic acids and identification of Nω-methylserotonin by LC/MS-MS. Cimicifuga triterpenoids and phenolic acids bound weakly to the 5-HT7 receptor with no cAMP or SSRI activity. In contrast, Nω-methylserotonin showed 5-HT7 receptor binding (IC50 23 pM), induced cAMP (EC50 22 nM), and blocked serotonin reuptake (IC50 490 nM). These data suggest Nω-methylserotonin may be responsible for the serotonergic activity of black cohosh. PMID:19049296

  10. Relativistic jet activity from the tidal disruption of a star by a massive black hole.

    Science.gov (United States)

    Burrows, D N; Kennea, J A; Ghisellini, G; Mangano, V; Zhang, B; Page, K L; Eracleous, M; Romano, P; Sakamoto, T; Falcone, A D; Osborne, J P; Campana, S; Beardmore, A P; Breeveld, A A; Chester, M M; Corbet, R; Covino, S; Cummings, J R; D'Avanzo, P; D'Elia, V; Esposito, P; Evans, P A; Fugazza, D; Gelbord, J M; Hiroi, K; Holland, S T; Huang, K Y; Im, M; Israel, G; Jeon, Y; Jeon, Y-B; Jun, H D; Kawai, N; Kim, J H; Krimm, H A; Marshall, F E; P Mészáros; Negoro, H; Omodei, N; Park, W-K; Perkins, J S; Sugizaki, M; Sung, H-I; Tagliaferri, G; Troja, E; Ueda, Y; Urata, Y; Usui, R; Antonelli, L A; Barthelmy, S D; Cusumano, G; Giommi, P; Melandri, A; Perri, M; Racusin, J L; Sbarufatti, B; Siegel, M H; Gehrels, N

    2011-08-24

    Supermassive black holes have powerful gravitational fields with strong gradients that can destroy stars that get too close, producing a bright flare in ultraviolet and X-ray spectral regions from stellar debris that forms an accretion disk around the black hole. The aftermath of this process may have been seen several times over the past two decades in the form of sparsely sampled, slowly fading emission from distant galaxies, but the onset of the stellar disruption event has not hitherto been observed. Here we report observations of a bright X-ray flare from the extragalactic transient Swift J164449.3+573451. This source increased in brightness in the X-ray band by a factor of at least 10,000 since 1990 and by a factor of at least 100 since early 2010. We conclude that we have captured the onset of relativistic jet activity from a supermassive black hole. A companion paper comes to similar conclusions on the basis of radio observations. This event is probably due to the tidal disruption of a star falling into a supermassive black hole, but the detailed behaviour differs from current theoretical models of such events.

  11. Students’ perceptions of Black English teaching staff at education institutions in Johannesburg, South Africa

    Directory of Open Access Journals (Sweden)

    Chacha-Mhlahlo, Memory T.

    2014-12-01

    Full Text Available Since the official end of apartheid in South Africa, the English departments of some former whites-only secondary schools and universities have made attempts at transformation by employing both local and foreign black teaching staff. This paper qualitatively explores both secondary and tertiary students’ perceptions of black teachers/lecturers of English at two secondary schools, an FET college and a university located in Johannesburg. It does so against the backdrop of South Africa’s racial history, the high status the colonial language of English continues to have in the postcolonial country and now, its instruction by second-language speakers of English to multi-racial students. It is in this context that the paper investigates and comes to grips with how postcolonial identity constructs of the last century are today impacting the teaching-learning of English; how identity is being perceived, constructed and performed in some South African schools and higher education institutions. It concludes by recommending context-sensitive approaches that exploit the opportunities bi/multilingual identities offer, specifically to the teaching-learning of English and other languages generally.

  12. Historically Black Colleges and Universities Radioactive Waste Management Research Program: Summary of activities, 1985-1986

    International Nuclear Information System (INIS)

    1986-01-01

    This report summarizes the 1985 to 1986 activities of the Historically Black Colleges and Universities (HBCUs) Radioactive Waste Management Research Program sponsored by the Office of Civilian Radioactive Waste Management of the US Department of Energy (DOE). The first set of three awards was made in September,1984. In September, 1985, two of these projects were renewed and a new proposal was funded. The program has been enthusiastically received by the community of HBCUs and the program sponsor

  13. Cytotoxic and apoptotic activities of black widow spiderling extract against HeLa cells.

    Science.gov (United States)

    Peng, Xiaozhen; Dai, Zhipan; Lei, Qian; Liang, Long; Yan, Shuai; Wang, Xianchun

    2017-06-01

    Black widow spiders contain toxic components not only in the venom glands but also in other parts of the spider body, including the legs and abdomen. Additionally, both the eggs and newborn spiderlings of the black widow spider contain venom. It is important to investigate their potential effects on cancer cells. In the present study, the effects of newborn black widow spiderling extract on human HeLa cells were evaluated in vitro . When applied at different concentrations, the total extract decreased HeLa cell viability in a dose-dependent manner, with an IC 50 value of 158 µg/ml. Flow cytometry indicated that treatment of HeLa cells with the total extract of the spiderlings induced apoptosis in HeLa cells in a dose-dependent manner and led to cell cycle arrest in the S-phase. Additionally, application of the total extract at different concentrations increased apoptosis-related caspase 3 activity in a dose-dependent manner. HeLa cells treated with the total extract appeared to be morphologically changed, exhibiting membrane blebbing, nuclear fragmentation and condensation of chromatin. Further separation and activity screening demonstrated that the cytotoxic and apoptotic activities of the total extract were attributable mainly to its high molecular mass proteins, one of which was purified and characterized to determine its anti-tumor activities on HeLa cells. The results of the present study therefore have expanded understanding regarding the effect of spider toxins on cancer cells and suggested that components of black widow spiderlings may be developed as a promising novel agent to treat cancer.

  14. Penrose pair production as a power source of quasars and active galactic nuclei. [black hole mechanisms

    Science.gov (United States)

    Kafatos, M.; Leiter, D.

    1979-01-01

    Penrose pair production in massive canonical Kerr black holes (those with a/M equal to 0.998) is proposed as a way to explain the nature of the vast fluctuating energy production associated with active galactic nuclei and quasars. It is assumed that a Kerr black hole with a mass of the order of 100 million solar masses lies at the center of an active nucleus and that an accretion disk is formed. Penrose pair production in the inner ergosphere of such a massive canonical Kerr black hole is analyzed. The results indicate that: (1) particle pairs are ejected within a 40 deg angle relative to the equator; (2) the particle energy is of the order of 1 GeV per pair; (3) the pressure of the electron-positron relativistic gas is proportional to the electron-positron number density; (4) pair production may occur in bursts; and (5) the overall lifetime of an active nucleus would depend on the time required to exhaust the disk of its matter content. A test of the theory is suggested which involves observation of the 0.5-MeV pair-annihilation gamma rays that would be generated by annihilating particle pairs.

  15. Antimicrobial activity, phyto chemical profile and trace minerals of black mulberry (morus nigra l.) fresh juice

    International Nuclear Information System (INIS)

    Khalid, N.; Fawad, S.A.; Ahmed, I.

    2011-01-01

    In the present work, the fresh juice of black mulberry (Morus nigra) was tested for antimicrobial activity against various pathogenic microorganisms. Total antioxidant contents, total phenolic contents, total anthocyanins, trace minerals, total acid contents, total solids and ascorbic acid content were also evaluated. The results showed good antimicrobial activity both for Gram- positive and Gram-negative bacteria, with highest zones of inhibition for Bacillus spizizenii (19.68 mm, Gram-positive) and Pseudomonas aeruginosa (19.87 mm, Gram-negative). The black mulberry juice was rich in ascorbic acid (23.45 mg/100 g), had low overall acid content (1.60 %) and had 19% total soluble solids. The average total anthocyanins and total phenolic contents of black mulberry juice were 769 mu g/g of cyanidin 3-glucoside equivalent (Cy 3-gly) per gram and 2050 mu g of gallic acid equivalent (GAE) per gram of fresh juice. The average antioxidant activity (Trolox equivalent, TE) of fresh juice was 14.00 mu mol/g according to a FRAP assay and 20.10 mu mol/g according to a DPPH assay. The fresh juice was also rich in a variety of trace minerals. (author)

  16. Insidious Colonialism in Post-Apartheid Education: Interplay of Black Teacher Narratives, Educational Policy and Textbook Analysis

    Directory of Open Access Journals (Sweden)

    Sharon Subreemduth

    2013-10-01

    Full Text Available This article focuses on the larger project of identifying oppressive structures (during apartheid more specifically in this instance and how educational policy/textbooks (post-apartheid produce transformative knowledge for decolonization. It presents Black South African teacher perceptions and desires of what/how educational policy, history textbooks can intervene in apartheid indoctrination and what role these have in addressing the nation’s meta-narrative of equity and social justice. I take up these teacher narratives as a way to further critique textbooks currently used and examine the written and visual content against post-apartheid decolonizing intentions. Teacher narratives and textbook analysis indicate that even prescriptive post-apartheid textbooks struggle to reimagine history wrought through with colonialism. Decolonizing analysis of visual images in the textbooks show how curriculum policy/practice in South Africa is a collision of anti-apartheid desires and post-apartheid reality. By examining grassroots linkages I attempt to expand the current dialogue on educational policy and textbook studies and to contextualize the field, both historically and contemporarily.

  17. Standing in the Gaps: Examining the Effects of Early Gifted Education on Black Girl Achievement in STEM

    Science.gov (United States)

    Young, Jemimah L.; Young, Jamaal R.; Ford, Donna Y.

    2017-01-01

    The purpose of this study was to explore the differential effects of access to gifted education on the mathematics and science achievement of fourth-grade Black girls. This study utilized mean difference effect sizes to examine the magnitude of differences between groups. By convention, White girls were included as a comparison group. Girls…

  18. Beyond the Black-White Binary of U.S. Race Relations: A Next Step in Religious Education

    Science.gov (United States)

    Goto, Courtney T.

    2017-01-01

    Many if not most people in the academy as well as the public sphere tend to regard race and racism in the United States in terms of a default frame of reference (i.e., a paradigm): the black-white binary. Although this frame is constructive as well as compelling, it displays serious liabilities. This article outlines, for religious educators, nine…

  19. Final Report of the National Black Health Providers Task Force on High Blood Pressure Education and Control.

    Science.gov (United States)

    Public Health Service (DHHS), Rockville, MD.

    This is the final report of National Black Health Providers Task Force (NBHPTF) on High Blood Pressure Education and Control. The first chapter of the report recounts the history of the NBHPTF and its objectives. In the second chapter epidemiological evidence is presented to demonstrate the need for a suggested 20 year plan aimed at controlling…

  20. Urban Preparation: Young Black Men Moving from Chicago's South Side to Success in Higher Education

    Science.gov (United States)

    Warren, Chezare A.

    2017-01-01

    Chezare A. Warren chronicles the transition of a cohort of young Black males from Urban Prep Charter Academy for Young Men to their early experiences in higher education. A rich and closely observed account of a mission-driven school and its students, "Urban Preparation" makes a significant contribution to our understanding of how young…

  1. Active shooter in educational facility.

    Science.gov (United States)

    Downs, Scott

    2015-01-01

    The last decade has seen several of the most heinous acts imaginable committed against our educational facilities. In light of the recent shooting in Sandy Hook Elementary School in Monroe (Newtown), CT, which took the lives of 20 children and six employees, a new heightened sense of awareness for safety and security among our educational facilities was created.(1) The law enforcement and public-safety community is now looking to work together with many of the educational representatives across the nation to address this issue, which affects the educational environment now and in the future. The US public and private elementary and secondary school systems' population is approximately 55.2 million students with an additional 19.1 million students attending a 2- and 4-year college or university. These same public and private school and degree-granting institutions employ approximately 7.6 million staff members who can be an enormous threshold of potential targets.(2) A terrorist's act, whether domestic, international, or the actions of a Lone Wolf against one of our educational facilities, would create a major rippling effect throughout our nation. Terrorists will stop at nothing to advance their ideology and they must continue to advance their most powerful tool-fear-to further their agenda and mission of destroying our liberty and the advanced civilization of the Western hemisphere. To provide the safety and security for our children and those who are employed to educate them, educational institutions must address this issue as well as nullify the possible threat to our national security. This thesis used official government reports and data interview methodologies to address various concerns from within our nation's educational system. Educational personnel along with safety and security experts identified, describe, and pinpointed the recommended measures that our educational institutions should include to secure our nation from within. These modifications of

  2. Mohs Surgical Reconstruction Educational Activity: a resident education tool

    Directory of Open Access Journals (Sweden)

    Croley JA

    2017-02-01

    Full Text Available Julie A Croley,1 C Helen Malone,1 Brandon P Goodwin,1 Linda G Phillips,2 Eric L Cole,2 Richard F Wagner1 1Department of Dermatology, 2Division of Plastic Surgery, Department of Surgery, The University of Texas Medical Branch, Galveston, TX, USA Background: Surgical reconstructive planning following Mohs surgery can be a difficult subject for dermatology residents to master. Prior research demonstrates that active learning is preferred and more effective compared to passive learning models and that dermatology residents desire greater complexity and volume in surgical training. We present a novel, active, problem-based learning tool for the education of Mohs reconstruction with the goal of improving residents’ ability to plan surgical reconstructions.Materials and methods: The Mohs Surgical Reconstruction Educational Activity is an active, problem-based learning activity in which residents designed repairs for planned Mohs defects prior to surgery on an iPad application or on a printed photograph. The attending Mohs surgeon reviewed the reconstructive designs, provided feedback, guided discussion, and facilitated insight into additional issues requiring further review. Residents performed or observed the Mohs and reconstructive surgical procedures for respective repairs. Surveys were administered to participants before and after participating in the Mohs Surgical Reconstruction Educational Activity to assess the educational value of the activity. Survey responses were recorded on a 5-point Likert scale.Results: Mean participant-reported confidence in flap and graft knowledge, flap and graft planning, and flap and graft performance increased 1.50–2.50 Likert scale points upon completion of the Mohs surgery rotation by residents participating in the educational activity. The observed trend was larger in the dermatology resident subset, with increases of 2.00–3.50 Likert scale points reported for these questions. Mean participant

  3. Teachers' Views On The Potential Use Of Online 
In-Service Education And Training Activities

    OpenAIRE

    KOKOC, Mehmet; OZLU, Ayşenur; CIMER, Atilla; KARAL, Hasan

    2011-01-01

    This study examined teacher’s views on the potential use of online in-service education and training (INSET) activities. The study used a qualitative approach. A total of 13 in-service teachers from primary school, vocational school, science and art center, high school in Trabzon (on the Black Sea coast of Turkey) participated in the study. To determine opinions of participants about the potential use of online INSET activities, a online conference was held to determine teachers’ views. The p...

  4. "Hey, Teacher, Speak Black Please": The Educational Effectiveness of Bilingual Education in Burkina Faso

    Science.gov (United States)

    Lavoie, Constance

    2008-01-01

    Africa's educational systems are undergoing a quiet revolution. As these systems move away from working exclusively in the old colonial languages, usually English or French, bilingual schools which use local indigenous languages are springing up in many regions of Africa. This paper points out the historical processes driving the bilingual…

  5. Environmental Education Tips: Weather Activities.

    Science.gov (United States)

    Brainard, Audrey H.

    1989-01-01

    Provides weather activities including questions, on weather, heating the earth's surface, air, tools of the meteorologist, clouds, humidity, wind, and evaporation. Shows an example of a weather chart activity. (RT)

  6. Concurrent activity of anammox and denitrifying bacteria in the Black Sea

    OpenAIRE

    Kirkpatrick, John B.; Fuchsman, Clara A.; Yakushev, Evgeniy; Staley, James T.; Murray, James W.

    2012-01-01

    After the discovery of ANaerobic AMMonium OXidation (anammox) in the environment, the role of heterotrophic denitrification as the main marine pathway for fixed N loss has been questioned. A 3 part, 15 month time series investigating nitrite reductase (nirS) mRNA transcripts at a single location in the Black Sea was conducted in order to better understand the activity of anammox and denitrifying bacteria. Here we show that both of these groups were active, as well as being concurrent in the l...

  7. Narrative Agency in Hashtag Activism: The Case of #BlackLivesMatter

    Directory of Open Access Journals (Sweden)

    Guobin Yang

    2016-08-01

    Full Text Available Hashtag activism happens when large numbers of postings appear on social media under a common hashtagged word, phrase or sentence with a social or political claim. The temporal unfolding of these mutually connected postings in networked spaces gives them a narrative form and agency. Applying Karlyn Campbell’s propositions about rhetorical agency to the case of #BlackLivesMatter, this essay shows that narrative agency in hashtag activism derives from its narrative form as well as from its contents and social context. Narrative agency is communal, invented, skillful, and protean.

  8. The Tuskegee Syphilis Study, 1932 to 1972: Implications for HIV Education and AIDS Risk Education Programs in the Black Community.

    Science.gov (United States)

    Thomas, Stephen B.; Quinn, Sandra Crouse

    1991-01-01

    The Tuskegee study of untreated syphilis in black males caused distrust by blacks of the public health system that has implications for Acquired Immune Deficiency Syndrome (AIDS) and Human Immunodeficiency Virus (HIV) studies. AIDS prevention among blacks may require openness about the Tuskegee study to allay fears of repetition. (SLD)

  9. Unmasking the Inequitable Discipline Experiences of Urban Black Girls: Implications for Urban Educational Stakeholders

    Science.gov (United States)

    Blake, Jamilia J.; Butler, Bettie Ray; Lewis, Chance W.; Darensbourg, Alicia

    2011-01-01

    There is a large body of research examining the discipline experiences of Black males (Lewis et al. in "Souls: A Critical Journey of Black Politics, Culture, and Society," 2009; Skiba et al. in "The Urban Review," 34, 317-348, 2002); however, less is known about the types of behavioral infractions Black female students exhibit…

  10. Basic Education and Policy Support (BEPS) Activity.

    Science.gov (United States)

    Creative Associates International, Inc., Washington, DC.

    The Basic Education and Policy Support (BEPS) Activity is a multi-year, worldwide, indefinite quantity contract by which the U.S. Agency for International Development (USAID) Global Bureau Center for Human Capacity (G/HCD) can work to achieve four objectives: (1) improve the quality, efficiency, access, and equity of education, particularly basic…

  11. Physical Education Waivers and Young Adult Activity

    Science.gov (United States)

    Mears, Derrick

    2010-01-01

    This study was to evaluate the relationship between physical activity of young adults who were granted waivers from high school physical education versus those who completed courses in states requiring physical education teacher certification, with curriculum standards and credit requirements for graduation. University students from three…

  12. 1.4 GHz on the Fundamental Plane of Black Hole Activity

    Science.gov (United States)

    Saikia, Payaswini; Körding, Elmar; Dibi, Salome

    2018-03-01

    The fundamental plane of black hole activity is an empirical relationship between the OIII/X-ray luminosity depicting the accretion power, the radio luminosity as a probe of the instantaneous jet power and the mass of the black hole. For the first time, we use the 1.4 GHz FIRST radio luminosities on the optical fundamental plane, to investigate whether or not FIRST fluxes can trace nuclear activity. We use a SDSS-FIRST cross-correlated sample of 10149 active galaxies and analyse their positioning on the optical fundamental plane. We focus on various reasons that can cause the discrepancy between the observed FIRST radio fluxes and the theoretically expected core radio fluxes, and show that that FIRST fluxes are heavily contaminated by non-nuclear, extended components and other environmental factors. We show that the subsample of `compact sources', which should have negligible lobe contribution, statistically follow the fundamental plane when corrected for relativistic beaming, while all the other sources lie above the plane. The sample of LINERs, which should have negligible lobe and beaming contribution, also follow the fundamental plane. A combined fit of the low-luminosity AGN and the X-ray binaries, with the LINERs, results in the relation log LR = 0.77 log LOIII + 0.69 log M. Assuming that the original fundamental plane relation is correct, we conclude that 1.4 GHz FIRST fluxes do not trace the pure `core' jet and instantaneous nuclear activity in the AGN, and one needs to be careful while using it on the fundamental plane of black hole activity.

  13. Affirmative Action in Education and Black Economic Empowerment in the Workplace in South Africa since 1994: Policies, Strengths and Limitations

    Directory of Open Access Journals (Sweden)

    Harold D. Herman

    2017-05-01

    Full Text Available This paper explains the concepts of Affirmative Action (AA and Black Economic Empowerment (BEE and the policies developed in post-Apartheid South Africa. It compares it to similar policies adopted in different contexts in Malaysia, India and the U.S.A. It explains and critiques the South African policies on AA and BEE, its history since 1994 and how class has replaced race as the determinant of who succeeds in education and the workplace. It analyses why these policies were essential to address the massive racial divide in education and the workplace at the arrival of democracy in 1994, but also why it has been controversial and racially divisive. The strengths and limitations of these policies are juxtaposed, the way it has benefitted the black and white elites, bolstered the black middle-class but has had little success in addressing the education and job futures of poor, working class black citizens in South Africa. The views of a number of key social analysts in the field are stated to explain the moral, racial, divisive aspects of AA in relation to the international experience and how South Africa is grappling with limited success to bridge the divide between the rich and poor.

  14. Does education matter? Examining racial differences in the association between education and STI diagnosis among black and white young adult females in the U.S.

    Science.gov (United States)

    Annang, Lucy; Walsemann, Katrina M; Maitra, Debeshi; Kerr, Jelani C

    2010-01-01

    Education has long been considered a protective factor against sexual risk behaviors and sexually transmitted infections (STIs) among adolescents; however, few have explored this association and determined differences across racial/ethnic groups of young adult females on a national scale. The purpose of this study was to (1) describe the association between education and STI diagnosis among a national sample of black and white young adult females and (2) examine racial differences in this association. We used data from the National Longitudinal Study of Adolescent Health (Add Health) to assess the association between education and chlamydia, gonorrhea, and/or trichomoniasis (self-reported and assay-diagnosed) in 2001-2002 using logistic regression analysis. After adjustment for risk behaviors, education was inversely associated with any assay-diagnosed STI, but this association was nonsignificant among black women for self-reported STI. Additionally, black females enrolled in, or who graduated from, college had significantly higher predicted probabilities of having an STI (12.4% self-reported; 13.4% assay-diagnosed) compared with white females who had less than a high school diploma (6.4% self-reported; 2.3% assay-diagnosed). Educational status was not uniformly protective against STIs for black and white females in this sample. Particularly for young black women, other factors may play a more prominent role in determining STI risk. Social determinants, such as education, should be viewed as important factors associated with STI prevalence, but their differential impact on various racial/ethnic groups should also be considered when addressing the disproportionate rates of STIs in the U.S.

  15. Educating the next generation of explorers at an historically Black University

    Science.gov (United States)

    Chaudhury, S.; Rodriguez, W. J.

    2003-04-01

    This paper describes the development of an innovative undergraduate research training model based at an Historically Black University in the USA that involves students with majors in diverse scientific disciplines in authentic Earth Systems Science research. Educating those who will be the next generation of explorers of earth and space poses several challenges at smaller academic institutions that might lack dedicated resources for this area of study. Over a 5-year span, Norfolk State University has been developing a program that has afforded the opportunity for students majoring in biology, chemistry, mathematics, computer science, physics, engineering and science education to work collaboratively in teams on research projects that emphasize the use of scientific visualization in studying the environment. Recently, a hands-on component has been added through partnerships with local K-12 school teachers in data collection and reporting for the GLOBE Program (GLobal Observations to Benefit the Environment). The successes and challenges of this program along with some innovative uses of technology to promote inquiry learning will be presented in this paper.

  16. Black Zira essential oil: Chemical compositions and antimicrobial activity against the growth of some pathogenic strain causing infection.

    Science.gov (United States)

    Noshad, Mohammad; Hojjati, Mohammad; Alizadeh Behbahani, Behrooz

    2018-03-01

    The aim of this study was to perform chemical compositions and phytochemical analysis of Black Zira essential oil and other goal of this research was to investigate the antimicrobial effects of Black Zira essential oil against Enterobacter aerogenes, Pseudomonas aeruginosa, Escherichia coli, Shigella flexneri, Staphylococcus epidermidis, Streptococcus pyogenes and Candida albicans. Black Zira essential oil was extracted by hydrodistillation method using clevenger apparatus. Black Zira essential oil chemical composition was identified through gas chromatography/mass spectrometry. γ-terpinene with a percentage of 24.8% was the major compound of Black Zira essential oil. The antimicrobial effect Black Zira essential oil was evaluated by several qualitative and quantitative methods (disk diffusion, well diffusion, microdilution broth, agar dilution and minimum bactericidal/fungicidal concentration). Phytochemical analysis Black Zira essential oil were appraised based on qualitative methods. Antioxidant activity (2,2-diphenyl-1-picrylhydrazyl and β-carotene/linoleic acid inhibition) and total phenolic content (Folin-Ciocalteu) were examined. The results of phytochemical analysis of Black Zira essential oil showed the existence of phenolic, flavonoids, saponins, alkaloids and tannins. The total phenolic content and antioxidant activity (reported as IC 50 ) of Black Zira essential oil were equal to 120.50 ± 0.50 mg GAE/g and 11.55 ± 0.25 μg/ml, respectively. The MIC of the Black Zira essential oil ranged from 1 mg/ml to 8 mg/ml, while its MBC and MFC ranged from 1 mg/ml to 16 mg/ml. The results presented that the longest and the shortest inhibition zone diameter at the concentration of 8 mg/ml pertained to C. albicans and E. aerogenes, respectively. Copyright © 2018. Published by Elsevier Ltd.

  17. A systematic literature review of diabetes self-management education features to improve diabetes education in women of Black African/Caribbean and Hispanic/Latin American ethnicity.

    Science.gov (United States)

    Gucciardi, Enza; Chan, Vivian Wing-Sheung; Manuel, Lisa; Sidani, Souraya

    2013-08-01

    This systematic literature review aims to identify diabetes self-management education (DSME) features to improve diabetes education for Black African/Caribbean and Hispanic/Latin American women with Type 2 diabetes mellitus. We conducted a literature search in six health databases for randomized controlled trials and comparative studies. Success rates of intervention features were calculated based on effectiveness in improving glycosolated hemoglobin (HbA1c), anthropometrics, physical activity, or diet outcomes. Calculations of rate differences assessed whether an intervention feature positively or negatively affected an outcome. From 13 studies included in our analysis, we identified 38 intervention features in relation to their success with an outcome. Five intervention features had positive rate differences across at least three outcomes: hospital-based interventions, group interventions, the use of situational problem-solving, frequent sessions, and incorporating dietitians as interventionists. Six intervention features had high positive rate differences (i.e. ≥50%) on specific outcomes. Different DSME intervention features may influence broad and specific self-management outcomes for women of African/Caribbean and Hispanic/Latin ethnicity. With the emphasis on patient-centered care, patients and care providers can consider options based on DSME intervention features for its broad and specific impact on outcomes to potentially make programming more effective. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  18. Active galaxies. A strong magnetic field in the jet base of a supermassive black hole.

    Science.gov (United States)

    Martí-Vidal, Ivan; Muller, Sébastien; Vlemmings, Wouter; Horellou, Cathy; Aalto, Susanne

    2015-04-17

    Active galactic nuclei (AGN) host some of the most energetic phenomena in the universe. AGN are thought to be powered by accretion of matter onto a rotating disk that surrounds a supermassive black hole. Jet streams can be boosted in energy near the event horizon of the black hole and then flow outward along the rotation axis of the disk. The mechanism that forms such a jet and guides it over scales from a few light-days up to millions of light-years remains uncertain, but magnetic fields are thought to play a critical role. Using the Atacama Large Millimeter/submillimeter Array (ALMA), we have detected a polarization signal (Faraday rotation) related to the strong magnetic field at the jet base of a distant AGN, PKS 1830-211. The amount of Faraday rotation (rotation measure) is proportional to the integral of the magnetic field strength along the line of sight times the density of electrons. The high rotation measures derived suggest magnetic fields of at least tens of Gauss (and possibly considerably higher) on scales of the order of light-days (0.01 parsec) from the black hole. Copyright © 2015, American Association for the Advancement of Science.

  19. Proteolytic activity of selected moulds in the first fermentation of black-seeded soysauce

    Science.gov (United States)

    Yulifianti, R.; Ginting, E.

    2018-01-01

    Black-seeded soybean is preferred as normally it has higher protein content and would give black colour to the soyfiltrate for making soysauce. Mould is usually used in the first fermentation of soysauce making to prepare koji with high soluble protein as a media for the subsequent bacteria fermentation in brine solution. Black-seeded soybean of Detam 1 variety was used as the soysauce ingredient. The trial was a randomized complete design with four replicates. The treatments were (1) Rhizopus oligosporus starter (in flour form) with two day-fermentation, (2) similar R. oligosporus starter with three-day fermentation, (3) Aspergillus sojae (pure culture) with three-day fermentation and (4) A. sojae in flour form with three-day fermentation. The black-seeded soybean had 100-grain weight of 11.7 g, high protein content of 42.5% dw and fat content of 14.9% dw. Koji prepared using R. oligosporus starter with two-day fermentation had the lowest protein content (48.9% dw). Both starters of A. sojae culture and flour gave the highest soluble protein content of koji (41.0-41.5% dw), followed by R. oligosporus starter with 3 day-fermentation (35.2% dw). Whilst the lowest value was noted in koji prepared using R. oligosporus starter with two day-fermentation (30.8% dw). This suggests that both A. sojae starters had similar proteolitic activity and higher than that of R. oligosporus starter. In terms of practical application and maintenance of the mould viability by soysauce processors, the use of A. sojae flour starter with three-day fermentation is suggested.

  20. Educational Activities At The Nuclear Engineering Teaching Laboratory

    Science.gov (United States)

    Tipping, Tracy N.

    2011-06-01

    The Nuclear Engineering Teaching Laboratory (NETL) at the University of Texas at Austin performs a wide variety of educational activities for students at various levels. Regular on-site courses in the areas of health physics, radiochemistry, and reactor operations are offered for university credit. Along with on-site courses, access to the reactor facility via a remote console connection allows students in an off-site classroom to conduct experiments via a "virtual" control console. In addition to the regularly scheduled courses, other programs, such as the Nuclear Regulatory Commission Summer Nuclear Engineering Institute and Office of Naval Research partnerships with Historically Black Colleges and Universities, provide access to the facility for students from other universities both domestic and foreign. And NETL hosts professional development programs such as training programs for Nuclear Regulatory Commission personnel and International Atomic Energy Agency fellowships.

  1. Antimicrobial activity of chitosan coatings and films against Listeria monocytogenes on black radish.

    Science.gov (United States)

    Jovanović, Gordana D; Klaus, Anita S; Nikšić, Miomir P

    2016-01-01

    The antibacterial activity of chitosan coatings prepared with acetic or lactic acid, as well as of composite chitosan-gelatin films prepared with essential oils, was evaluated in fresh shredded black radish samples inoculated with Listeria monocytogenes ATCC 19115 and L. monocytogenes ATCC 19112 during seven days of storage at 4°C. The chitosan coating prepared with acetic acid showed the most effective antibacterial activity. All tested formulations of chitosan films exhibited strong antimicrobial activity on the growth of L. monocytogenes on black radish, although a higher inhibition of pathogens was achieved at higher concentrations of chitosan. The antimicrobial effect of chitosan films was even more pronounced with the addition of essential oils. Chitosan-gelatin films with thyme essential oils showed the most effective antimicrobial activity. A reduction of 2.4log10CFU/g for L. monocytogenes ATCC 19115 and 2.1log10CFU/g for L. monocytogenes ATCC 19112 was achieved in the presence of 1% chitosan film containing 0.2% of thyme essential oil after 24h of storage. Copyright © 2016 Asociación Argentina de Microbiología. Publicado por Elsevier España, S.L.U. All rights reserved.

  2. Phytochemical Contents and Antioxidant and Antiproliferative Activities of Selected Black and White Sesame Seeds

    Science.gov (United States)

    Abbasi, Arshad Mehmood; Zheng, Bisheng

    2016-01-01

    Sesame (Sesamum indicum L.) seeds are popular nutritional food but with limited knowledge about their antioxidant and antiproliferative activities of various varieties. Phytochemical profiles and antioxidant and antiproliferative activities of six varieties of sesame (Sesamum indicum L.) seeds were studied. Fenheizhi3 (black) cultivar exhibited the maximum contents of total phenolics and lignans and values of total oxygen radical absorbance capacity (ORAC) and antiproliferative activity (EC50) against HepG2 cells. Bound ORAC values showed strong associations with bound phenolics contents (r = 0.976, p 0.8, p < 0.05). Interestingly, nonlignan components in bound phenolics contributed to the antioxidant and antiproliferative activities. This study suggested that Fenheizhi3 variety is superior to the other five varieties as antioxidant supplements. PMID:27597975

  3. Educators, Learners and Active Learning Methodologies

    Science.gov (United States)

    Kane, Liam

    2004-01-01

    Picking up from a previous publication in IJLE, the primary objective of this article is to engage in a critical analysis of the concept and practice of 'active' (including 'participatory') learning as well as the usefulness to educators of 'active learning methodologies'. Through a review of relevant literature and research, highlighting problems…

  4. Human rights education (HRE) and transnational activism

    NARCIS (Netherlands)

    Mihr, A.; Schmitz, Hans-Peter

    2007-01-01

    Transnational human rights activism occupies today a significant place in the practice and scholarship of current global affairs. This article reviews the past successes and limits of this activism and suggests Human Rights Education (HRE) as a strategic tool currently underutilized by activists and

  5. The habitability of the Milky Way during the active phase of its central supermassive black hole.

    Science.gov (United States)

    Balbi, Amedeo; Tombesi, Francesco

    2017-11-30

    During the peak of their accretion phase, supermassive black holes in galactic cores are known to emit very high levels of ionizing radiation, becoming visible over intergalactic distances as quasars or active galactic nuclei (AGN). Here, we quantify the extent to which the activity of the supermassive black hole at the center of the Milky Way, known as Sagittarius A* (Sgr A*), may have affected the habitability of Earth-like planets in our Galaxy. We focus on the amount of atmospheric loss and on the possible biological damage suffered by planets exposed to X-ray and extreme ultraviolet (XUV) radiation produced during the peak of the active phase of Sgr A*. We find that terrestrial planets could lose a total atmospheric mass comparable to that of present day Earth even at large distances (~1 kiloparsec) from the galactic center. Furthermore, we find that the direct biological damage caused by Sgr A* to surface life on planets not properly screened by an atmosphere was probably significant during the AGN phase, possibly hindering the development of complex life within a few kiloparsecs from the galactic center.

  6. Characterization and Activation Study of Black Chars Derived from Cellulosic Biomass Pyrolyzed at Very High Temperature

    Energy Technology Data Exchange (ETDEWEB)

    Contescu, Cristian I. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Gallego, Nidia C. [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

    2017-03-01

    The State of Tennessee, in partnership with the University of Tennessee (UT) and the Oak Ridge National Laboratory (ORNL), has created the RevV! Manufacturing voucher program to help Tennessee manufacturers gain access to the world-class resources at ORNL. As a part of this program, ORNL was working with Proton Power, Inc. (PPI), a rapidly growing company located in Lenoir City, Tennessee. PPI has developed a patented renewable energy system that uses biomass and waste sources to produce inexpensive hydrogen gas or synthetic fuels which are economically competitive with fossil fuels. The pyrolysis process used by PPI in their manufacturing chain generates significant amounts of black carbon char as by-product. The scope of ORNL collaboration with PPI was assessing the black carbon char as a potential feedstock for activated carbon production, as this could be a potentially new revenue stream. During 2015-2016 ORNL received eight char samples from PPI and characterized their initial properties, simulated their physical activation by carbon dioxide, prepared gram-size samples of physically activated carbons, and characterized their surface and porosity properties. This report presents a summary of the work methods employed and the results obtained in the collaborative project between ORNL and PPI.

  7. Environmental Activities. Environmental Education Curriculum.

    Science.gov (United States)

    Topeka Public Schools, KS.

    This unit attempts to respond to societal concerns for the rapid depletion of our world's natural resources, our increasing world population, current pollution problems and the lack of knowledge about natural interdependence. The material is intended as a source from which primary teachers can select activities from five generalized groups as…

  8. Black-footed ferret areas of activity during late summer and fall at Meeteetse, Wyoming

    Science.gov (United States)

    Fagerstone, K.A.; Biggins, D.E.

    2011-01-01

    Radiotelemetry was used during 1983 and 1984 to collect information on short-term areas of activity for black-footed ferrets (Mustela nigripes) near Meeteetse, Wyoming. This population ultimately provided ferrets for the captive-breeding program that bred and released offspring into the wild since 1991. We fitted 5 adult ferrets and 13 juveniles with radiotransmitters and followed their movements during late summer and fall. Adult males had 7-day areas of activity that were >6 times as large as those of adult females. Activity areas of adult males varied little in coverage or location on a weekly basis, but females sequentially shifted their areas. Unlike juvenile females, juvenile males tended to leave their natal colonies. ?? 2011 American Society of Mammalogists.

  9. Marketing activities of higher education institutions

    OpenAIRE

    Varađanin Vladimir

    2017-01-01

    Public sector marketing is a modern-day scientific discipline which is getting more and more attention. Institutions of higher education provide a specific kind of services to their users, which makes these institutions a part of the public sector. Due to dynamic changes in the environment, the demands and needs of higher education institution's users change, which makes it necessary to monitor these changes through certain marketing activities and adjust to them in order to satisfy the users...

  10. Black Deaf Individuals' Reading Skills: Influence of ASL, Culture, Family Characteristics, Reading Experience, and Education

    Science.gov (United States)

    Myers, Candace; Clark, M. Diane; Musyoka, Millicent M.; Anderson, Melissa L.; Gilbert, Gizelle L.; Agyen, Selina; Hauser, Peter C.

    2010-01-01

    Previous research on the reading abilities of Deaf individuals from various cultural groups suggests that Black Deaf and Hispanic Deaf individuals lag behind their White Deaf peers. The present study compared the reading skills of Black Deaf and White Deaf individuals, investigating the influence of American Sign Language (ASL), culture, family…

  11. Gravity's Relentless Pull : An interactive, multimedia website about black holes for Education and Public Outreach

    NARCIS (Netherlands)

    Marel, R. P. van der; Schaller, D.; Kleijn, G. V.

    2006-01-01

    Abstract: We have created a website, called "Black Holes: Gravity's Relentless Pull", which explains the physics and astronomy of black holes for a general audience. The site emphasizes user participation and is rich in animations and astronomical imagery. It won the top prize of the 2005 Pirelli

  12. Much to Lose: Black Mother Educators Respond to Donald Trump's Comments about Schools

    Science.gov (United States)

    Jackson, Tambra O.; Flowers, Natasha C.

    2017-01-01

    In this essay, we specifically focus our attention on Donald Trump's perspective of the conditions of schools that Black children attend. The fact remains that as a presidential candidate, he verbalized stereotypical notions that many people hold about the conditions of schools that Black children attend. Thus, the purpose of this essay is to…

  13. Scales of Political Action and Social Movements in Education: The Case of the Brazilian Black Movement and Law 10.639

    Science.gov (United States)

    dos Santos, Renato Emerson Nascimento; Soeterik, Inti Maya

    2016-01-01

    This paper examines social coordination by the Brazilian Black Movement in the area of Brazilian education. It explains how these developments relate to the construction of race-based public education policies in the country. Focus goes to the process of creation and implementation of law 10.639 in Brazilian Basic education. Using the concept…

  14. The formation of bulges and black holes: lessons from a census of active galaxies in the SDSS.

    Science.gov (United States)

    Kauffmann, Guinevere; Heckman, Timothy M

    2005-03-15

    We examine the relationship between galaxies, supermassive black holes and AGN using a sample of 23,000 narrow-emission-line ('type 2') active galactic nuclei (AGN) drawn from a sample of 123,000 galaxies from the Sloan Digital Sky Survey. We have studied how AGN host properties compare with those of normal galaxies and how they depend on the luminosity of the active nucleus. We find that AGN reside in massive galaxies and have distributions of sizes and concentrations that are similar to those of the early-type galaxies in our sample. The host galaxies of low-luminosity AGN have stellar populations similar to normal early types. The hosts of high- luminosity AGN have much younger mean stellar ages, and a significant fraction have experienced recent starbursts. High-luminosity AGN are also found in lower-density environments. We then use the stellar velocity dispersions of the AGN hosts to estimate black hole masses and their [OIII]lambda5007 emission-line luminosities to estimate black hole accretion rates. We find that the volume averaged ratio of star formation to black hole accretion is approximately 1000 for the bulge-dominated galaxies in our sample. This is remarkably similar to the observed ratio of stellar mass to black hole mass in nearby bulges. Most of the present-day black hole growth is occurring in black holes with masses less than 3 x 10(7)M(3). Our estimated accretion rates imply that low-mass black holes are growing on a time-scale that is comparable with the age of the Universe. Around 50% this growth takes place in AGN that are radiating within a factor of five of the Eddington luminosity. Such systems are rare, making up only 0.2% of the low-mass black hole population at the present day. The remaining growth occurs in lower luminosity AGN. The growth time-scale increases by more than an order of magnitude for the most massive black holes in our sample. We conclude that the evolution of the AGN luminosity function documented in recent optical

  15. X-Ray Emission from Active Galactic Nuclei with Intermediate-Mass Black Holes

    Science.gov (United States)

    Dewangan, G. C.; Mathur, S.; Griffiths, R. E.; Rao, A. R.

    2008-12-01

    We present a systematic X-ray study of eight active galactic nuclei (AGNs) with intermediate-mass black holes (MBH ~ 8-95 × 104 M⊙) based on 12 XMM-Newton observations. The sample includes the two prototype AGNs in this class—NGC 4395 and POX 52 and six other AGNs discovered with the Sloan Digitized Sky Survey. These AGNs show some of the strongest X-ray variability, with the normalized excess variances being the largest and the power density break timescales being the shortest observed among radio-quiet AGNs. The excess-variance-luminosity correlation appears to depend on both the BH mass and the Eddington luminosity ratio. The break timescale-black hole mass relations for AGN with IMBHs are consistent with that observed for massive AGNs. We find that the FWHM of the Hβ/Hα line is uncorrelated with the BH mass, but shows strong anticorrelation with the Eddington luminosity ratio. Four AGNs show clear evidence for soft X-ray excess emission (kTin ~ 150-200 eV). X-ray spectra of three other AGNs are consistent with the presence of the soft excess emission. NGC 4395 with lowest L/LEdd lacks the soft excess emission. Evidently small black mass is not the primary driver of strong soft X-ray excess emission from AGNs. The X-ray spectral properties and optical-to-X-ray spectral energy distributions of these AGNs are similar to those of Seyfert 1 galaxies. The observed X-ray/UV properties of AGNs with IMBHs are consistent with these AGNs being low-mass extensions of more massive AGNs, those with high Eddington luminosity ratio looking more like narrow-line Seyfert 1 s and those with low L/LEdd looking more like broad-line Seyfert 1 galaxies.

  16. 28 CFR 54.400 - Education programs or activities.

    Science.gov (United States)

    2010-07-01

    ... SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Education Programs or Activities Prohibited § 54.400 Education programs or activities... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Education programs or activities. 54.400...

  17. 22 CFR 229.400 - Education programs or activities.

    Science.gov (United States)

    2010-04-01

    ... SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Education Programs or Activities Prohibited § 229.400 Education programs or activities... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Education programs or activities. 229.400...

  18. EPISODIC ACTIVITIES OF SUPERMASSIVE BLACK HOLES AT REDSHIFT z ≤ 2: DRIVEN BY MERGERS?

    International Nuclear Information System (INIS)

    Li Yanrong; Wang Jianmin; Hu Chen; Zhang Shu; Yuan Yefei

    2010-01-01

    It has been suggested for quite a long time that galaxy mergers trigger activities of supermassive black holes (SMBHs) on the grounds of imaging observations of individual galaxies. To quantitatively examine this hypothesis, we calculate quasar luminosity functions (LFs) by manipulating the observed galaxy LFs (z ∼ maj ∼ 0.2 at z ∼ 2 to f maj → 0 at z ∼ 0. As a consequence, the newly formed SMBHs from major mergers at z ∼ 2 may acquire a maximal spin due to the orbital angular momentum of the merging holes. Subsequently, random accretion led by minor mergers rapidly drives the SMBHs to spin down. Such an evolutionary trend of the SMBH spins is consistent with the fact that radiative efficiency of accreting SMBHs strongly declines with cosmic time, reported by Wang et al. This suggests that minor mergers are important in triggering activities of SMBHs at low redshift, while major mergers may dominate at high redshift.

  19. Catalytic Activity of Oxidized Carbon Black and Graphene Oxide for the Crosslinking of Epoxy Resins

    Directory of Open Access Journals (Sweden)

    Maria Rosaria Acocella

    2017-04-01

    Full Text Available This article compares the catalytic activities of oxidized carbon black (oCB and graphene oxide (eGO samples on the kinetics of a reaction of diglycidyl ether of bisphenol A (DGEBA with a diamine, leading to crosslinked insoluble networks. The study is mainly conducted by rheometry and Differential Scanning Calorimetry (DSC. Following the same oxidation procedure, CB samples are more efficiently oxidized than graphite samples. For instance, CB and graphite samples with high specific surface areas (151 and 308 m2/g, as oxidized by the Hummers’ method, exhibit O/C wt/wt ratios of 0.91 and 0.62, respectively. Due to the higher oxidation levels, these oCB samples exhibit a higher catalytic activity toward the curing of epoxy resins than fully exfoliated graphene oxide.

  20. Wind from the black-hole accretion disk driving a molecular outflow in an active galaxy.

    Science.gov (United States)

    Tombesi, F; Meléndez, M; Veilleux, S; Reeves, J N; González-Alfonso, E; Reynolds, C S

    2015-03-26

    Powerful winds driven by active galactic nuclei are often thought to affect the evolution of both supermassive black holes and their host galaxies, quenching star formation and explaining the close relationship between black holes and galaxies. Recent observations of large-scale molecular outflows in ultraluminous infrared galaxies support this quasar-feedback idea, because they directly trace the gas from which stars form. Theoretical models suggest that these outflows originate as energy-conserving flows driven by fast accretion-disk winds. Proposed connections between large-scale molecular outflows and accretion-disk activity in ultraluminous galaxies were incomplete because no accretion-disk wind had been detected. Conversely, studies of powerful accretion-disk winds have until now focused only on X-ray observations of local Seyfert galaxies and a few higher-redshift quasars. Here we report observations of a powerful accretion-disk wind with a mildly relativistic velocity (a quarter that of light) in the X-ray spectrum of IRAS F11119+3257, a nearby (redshift 0.189) optically classified type 1 ultraluminous infrared galaxy hosting a powerful molecular outflow. The active galactic nucleus is responsible for about 80 per cent of the emission, with a quasar-like luminosity of 1.5 × 10(46) ergs per second. The energetics of these two types of wide-angle outflows is consistent with the energy-conserving mechanism that is the basis of the quasar feedback in active galactic nuclei that lack powerful radio jets (such jets are an alternative way to drive molecular outflows).

  1. Educational activities for a gamified system

    OpenAIRE

    Valderrama de la Torre, Guiomar

    2015-01-01

    The objective of this dissertation is to analyze, design, and implement an activity module for a larger educational platform with the use of gamification techniques with the purpose to improve learning, pass rates, and feedback. The project investigates how to better incentivize student learning. A software requirement specification was delineated to establish the system guidelines and behavior. Following, a definition of the activities in the module was created. This definition ...

  2. Study of Active Ingredients in Black Soybean Sprouts and Their Safety in Cosmetic Use

    Directory of Open Access Journals (Sweden)

    Yinmao Dong

    2012-10-01

    Full Text Available Active ingredients in different lengths of black soybean sprouts were extracted with water. Concentrations of the main proteins and polysaccharides were determined by the Forint phenol assay and phenol-sulfuric acid assay, respectively. Anti-oxidizing capacities of the extracts were measured in vitro using the DPPH scavenging test and whitening capacity was measured in vitro using the tyrosinase inhibition test. The effects of the bean sprout extracts on human skin fibroblasts damnified by H2O2 were studied using an MTT colorimetric assay. The safety of the extracts was determined using the red blood cell (RBC test, chick chorioallantoic membrane (CAM assay and human patch test. Results show that DPPH radical scavenging rates at different shoot lengths were all greater than 95%, while the tyrosinase inhibition capacity of the extracts reached 98%. Hemolysis rate in all extracts were lower than 10%, below the 20% regulatory limit for the RBC test. No signs of allergic reactions were observed in the human patch tests. The optimum extract was obtained from bean sprouts grown to 0.5 cm. Extracts of black bean sprouts are safe and can be used as additives in anti-aging and whitening cosmetic products.

  3. Black TiO2 synthesized via magnesiothermic reduction for enhanced photocatalytic activity

    Science.gov (United States)

    Wang, Xiangdong; Fu, Rong; Yin, Qianqian; Wu, Han; Guo, Xiaoling; Xu, Ruohan; Zhong, Qianyun

    2018-04-01

    Utilizing solar energy for hydrogen evolution is a great challenge for its insufficient visible-light power conversion. In this paper, we report a facile magnesiothermic reduction of commercial TiO2 nanoparticles under Ar atmosphere and at 550 °C followed by acid treatment to synthesize reduced black TiO2 powders, which possesses a unique crystalline core-amorphous shell structure composed of disordered surface and oxygen vacancies and shows significantly improved optical absorption in the visible region. The unique core-shell structure and high absorption enable the reduced black TiO2 powders to exhibit enhanced photocatalytic activity, including splitting of water in the presence of Pt as a cocatalyst and degradation of methyl blue (MB) under visible light irradiation. Photocatalytic evaluations indicate that the oxygen vacancies play key roles in the catalytic process. The maximum hydrogen production rates are 16.1 and 163 μmol h-1 g-1 under the full solar wavelength range of light and visible light, respectively. This facile and versatile method could be potentially used for large scale production of colored TiO2 with remarkable enhancement in the visible light absorption and solar-driven hydrogen production.

  4. In vitro and in vivo activities of eugenol against tobacco black shank caused by Phytophthora nicotianae.

    Science.gov (United States)

    Jing, Changliang; Gou, Jianyu; Han, Xiaobin; Wu, Qian; Zhang, Chengsheng

    2017-10-01

    Phytophthora nicotianae causes serious black shank disease in tobacco. Syringa oblata essential oil and its main components were evaluated to develop an effective and environmentally friendly biocontrol agent. Eugenol, which exhibited the strongest activity, was intensively investigated in vitro and in vivo. The mycelial growth of P. nicotianae was inhibited by eugenol at a minimum inhibitory concentration of 200μgmL -1 , and inhibition occurred in a dose-dependent manner. Extracellular pH and extracellular conductivity results indicated that eugenol increased membrane permeability. Flow cytometry and fluorescent staining results further showed that eugenol disrupted mycelial membranes but did not affect spore membrane integrity. The in vivo results confirmed that treatment of tobacco with various concentrations of eugenol formulations reduced disease incidence and better controlled against the disease. Our results suggested that the ability of eugenol to control tobacco black shank depended on its ability to damage mycelial membranes and that eugenol formulations have potential as an eco-friendly antifungal agent for controlling tobacco blank shank. Copyright © 2017 Elsevier B.V. All rights reserved.

  5. Theorizing Network-Centric Activity in Education

    Science.gov (United States)

    HaLevi, Andrew

    2011-01-01

    Networks and network-centric activity are increasingly prevalent in schools and school districts. In addition to ubiquitous social network tools like Facebook and Twitter, educational leaders deal with a wide variety of network organizational forms that include professional development, advocacy, informational networks and network-centric reforms.…

  6. Concurrent Activity of Anammox and Denitrifying Bacteria in the Black Sea

    Directory of Open Access Journals (Sweden)

    John B. Kirkpatrick

    2012-07-01

    Full Text Available After the discovery of ANaerobic AMMonium OXidation (anammox in the Black Sea in 2003, the role of heterotrophic denitrification as the main marine pathway for fixed N loss was questioned. A 3 part, 15 month time series investigating Black Sea nitrite reductase (nirS mRNA transcripts at a single location was conducted in order to better understand the activity of anammox and denitrifying bacteria. Here we show that both of these groups were active, as well as being concurrent in the lower suboxic zone over this time span. Their distributions, however, were fundamentally different; denitrification expression was much more variable. Depth profiles covering the suboxic zone showed that the four groups of anammox-type sequences were expressed consistently in the lower suboxic zone, and were consistent with anammox 16S rDNA gene profiles. By contrast, denitrifier-type nirS sequence groups were mixed; half of the groups exhibited consistent expression in the lower suboxic zone, while others varied between season and depth. Co-occurrence of both anammox and denitrifier expression was common and ongoing. Both types of transcripts were also found in samples with low concentrations of sulfide ( >2 μM. 6 major groups of denitrifier-type nirS transcripts were identified, making these transcripts more diverse than previous DNA clone libraries. Several groups of denitrifier-type nirS transcripts were closely related to sequences from the Baltic Sea. An increase in denitrifier-type nirS transcript diversity and depth range in October 2007 corresponded to an increase in mixed layer net community productivity as measured by O2/Ar gas ratios, as well as to an increase in N2 concentrations in the upper suboxic zone. Taken together, the variations in expression patterns between anammox and denitrification provide one explanation as to how near instantaneous rate measurements, such as isotope spike experiments, may regularly detect anammox activity but underreport

  7. Manga and anime in medical education: leontiasis ossea in ‘Black Jack’

    OpenAIRE

    Michelle (k/a Mikhaila) Muscat, MD, MRCS(Ed), MSc, PG Dip, FRCPath

    2017-01-01

    Black Jack’, the medical manga (Japanese comic/graphical novel) by the widely acclaimed godfather of manga, Ozamu Tezuka, follows the dramatized story of the unlicensed surgeon. It spans many manga volumes, and many episodes in the corresponding animated series (commonly referred to as anime), with a key focus on Black Jack’s superior, sensationalized, surgical abilities. This brief review focuses on the presence of a patient with leontiasis ossea at the beginning of the ‘Black Jack 21’ anim...

  8. Fermentation with Aspergillus awamori enhanced contents of amino nitrogen and total phenolics as well as the low-density lipoprotein oxidation inhibitory activity of black soybeans.

    Science.gov (United States)

    Chen, Yu-Fei; Lee, Shiow-Ling; Chou, Cheng-Chun

    2011-04-27

    A solid fermentation was performed on black soybeans with Aspergillus awamori. The effects of fermentation on the contents of total phenolics and amino nitrogen and on the inhibitory effect on low-density lipoprotein (LDL) oxidation of black soybeans were examined. Results revealed that fermentation significantly enhanced the LDL oxidation inhibitory activity and total phenolics and amino nitrogen contents of black soybeans. The increased content of amino nitrogen was closely related to the enhanced LDL oxidation inhibitory activity of fermented black soybeans and its water extract. Fermentation temperature and length affected the LDL oxidation inhibitory effect exerted by the prepared fermented black soybeans. The A. awamori-fermented black soybean prepared at 30 °C for 3 days exhibited the highest inhibitory effect on LDL oxidation. The bioactive principles related to the inhibitory effect on LDL oxidation in black soybeans, regardless of fermentation, could be most efficiently extracted with water rather than 80% methanol or 80% ethanol.

  9. Effect of gamma irradiation on phenol content, antioxidant activity and biological activity of black maca and red maca extracts (Lepidium meyenii walp).

    Science.gov (United States)

    Zevallos-Concha, A; Nuñez, D; Gasco, M; Vasquez, C; Quispe, M; Gonzales, G F

    2016-01-01

    This study was performed to determine the effects of gamma irradiation on UV spectrum on maca, total content of polyphenols, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activities and in vivo biological activities of red and black maca extracts (Lepidium meyenii). Adult mice of the strain Swiss aged 3 months and weighing 30-35 g in average were used to determine biological activities. Daily sperm production, effect on testosterone-induced prostate hyperplasia and forced swimming test were used to determine the effect of irradiation on biological activities of maca extracts. Irradiation did not show differences in UV spectrum but improves the amount of total polyphenols in red maca as well as in black maca extracts. In both cases, black maca extract has more content of polyphenols than red maca extract (p  0.05). Black maca extract but not red maca extract has more swimming endurance capacity in the forced swimming test. Irradiation of black maca extract increased the swimming time to exhaustion (p  0.05). Testosterone enanthate (TE) increased significantly the ventral prostate weight. Administration of red maca extract in animals treated with TE prevented the increase in prostate weight. Irradiation did not modify effect of red maca extract on prostate weight (p > 0.05). In conclusion, irradiation does not alter the biological activities of both black maca and red maca extracts. It prevents the presence of microorganisms in the extracts of black or red maca, but the biological activities were maintained.

  10. The mitochondrial activation of silicate and its role in silicosis, black lung disease and lung cancer.

    Science.gov (United States)

    Hadler, H I; Cook, G L

    1979-01-01

    Silicate substitutes for phosphate in the transitory uncoupling of rat liver mitochondria induced by hydrazine when beta-hydroxy-butyrate is the substrate. Uncoupling is blocked by rutamycin. Just as in the case when phosphate is combined with hydrazine, ATP, ADP, PPi, and Mg++ protect against hydrazine when silicate is combined with hydrazine. A high level of ADP in the absence of added phosphate, but in the presence of silicate, induces a pseudo state three of the mitochondria. Silicate, like sulfate and arsenate which have been reported previously, is activated by the enzymes which mediate oxidative phosphorylation. These results serve to explain a role for silicate in silicosis, black lung disease, and cancer. In addition, since there is suggestive evidence in the literature that lung tissue solubilizes asbestos fibers, these results not only expand the confluence between oxidative phosphorylation and chemical carcinogenesis but are correlated with the synergistic carcinogenicity of asbestos and smoking observed by epidemiologists.

  11. Institutional projects in Educational Scientific activity

    Directory of Open Access Journals (Sweden)

    Oscar Ovidio Calzadilla Pérez

    2008-12-01

    Full Text Available Criteria are dealt, in particular, about the conceptual connotation and practice of the institutional project or the school as a particular type of educative project, because it is a developing, participative and sustainable way for the generation of the Educational and Scientific Activity aimed at the search of quality and excelence in the Cuban pedagogical context nowadays. The considerations stat ed have been lived by the authors through the “Centro Consultor para la Estimulación del Talento Verbal” Project performance in the Provincial Elementary School of Referente “Dalquis Sánchez Pupo”, in Holguin province.

  12. Responsible sexuality from extra educational activities

    Directory of Open Access Journals (Sweden)

    Jorge Eladio Pérez Velázquez

    2008-09-01

    Full Text Available There are increasingly higher rates of illnesses worldwide, a phenomenon that makes evident the need to potentiate the development of a responsible sexuality since the early ages. Family contribution is recognized, but the role of the teacher in the process of instruction and education of the new generations is even more important. This article offers a methodological strategy to contribute to the education of a responsible sexuality in 5th grade students, in the contex t of out-of-the school activities.

  13. 45 CFR 86.31 - Education programs or activities.

    Science.gov (United States)

    2010-10-01

    ... THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Education Programs or Activities Prohibited § 86.31 Education programs or... 45 Public Welfare 1 2010-10-01 2010-10-01 false Education programs or activities. 86.31 Section 86...

  14. Marketing activities of higher education institutions

    Directory of Open Access Journals (Sweden)

    Varađanin Vladimir

    2017-01-01

    Full Text Available Public sector marketing is a modern-day scientific discipline which is getting more and more attention. Institutions of higher education provide a specific kind of services to their users, which makes these institutions a part of the public sector. Due to dynamic changes in the environment, the demands and needs of higher education institution's users change, which makes it necessary to monitor these changes through certain marketing activities and adjust to them in order to satisfy the users' needs. Each higher education institution sets its own goals which, broadly speaking, are to meet their own needs, the needs of students and the society as a whole. Therefore, when formulating a strategy for achieving the objectives of higher education institutions, it is necessary to have timely information from the environment. The modern approach to business puts forward the service users' needs. When it comes to institutions of higher education, the users are primarily students, who thus get the most attention. Keeping this in mind, we have conducted a research among students in order to identify the choice factors influencing their higher education institution selection process. The results obtained should provide guidelines for creating an adequate marketing mix in order to gain competitive advantage on the market for higher education. In the research descriptive and comparative methods were used. In the practical part of the research, survey technique was applied by means of a non-standardized questionnaire. The research results imply that the analysis of the factors influencing the process of selecting the higher education institution enables the creation of an adequate combination of instruments in a marketing mix which can then be used as an instrument for gaining competitive advantage.

  15. Nuclear star formation activity and black hole accretion in nearby Seyfert galaxies

    Energy Technology Data Exchange (ETDEWEB)

    Esquej, P. [Centro de Astrobiología, INTA-CSIC, Villafranca del Castillo, E-28850, Madrid (Spain); Alonso-Herrero, A.; Hernán-Caballero, A. [Instituto de Física de Cantabria, CSIC-Universidad de Cantabria, E-39005 Santander (Spain); González-Martín, O.; Ramos Almeida, C.; Rodríguez Espinosa, J. M. [Instituto de Astrofísica de Canarias (IAC), C/Vía Láctea, E-38205, La Laguna (Spain); Hönig, S. F. [UCSB Department of Physics, Broida Hall 2015H, Santa Barbara, CA (United States); Roche, P. [Department of Physics, University of Oxford, Oxford OX1 3RH (United Kingdom); Mason, R. E. [Gemini Observatory, Northern Operations Center, 670 North A' ohoku, HI 96720 (United States); Díaz-Santos, T. [Spitzer Science Center, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Levenson, N. A. [Gemini Observatory, Casilla 603, La Serena (Chile); Aretxaga, I. [Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE), Aptdo. Postal 51 y 216, 72000 Puebla (Mexico); Packham, C. [Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249 (United States)

    2014-01-01

    Recent theoretical and observational works indicate the presence of a correlation between the star-formation rate (SFR) and active galactic nucleus (AGN) luminosity (and, therefore, the black hole accretion rate, M-dot {sub BH}) of Seyfert galaxies. This suggests a physical connection between the gas-forming stars on kpc scales and the gas on sub-pc scales that is feeding the black hole. We compiled the largest sample of Seyfert galaxies to date with high angular resolution (∼0.''4-0.''8) mid-infrared (8-13 μm) spectroscopy. The sample includes 29 Seyfert galaxies drawn from the AGN Revised Shapley-Ames catalog. At a median distance of 33 Mpc, our data allow us to probe nuclear regions on scales of ∼65 pc (median value). We found no general evidence of suppression of the 11.3 μm polycyclic aromatic hydrocarbon (PAH) emission in the vicinity of these AGN, and we used this feature as a proxy for the SFR. We detected the 11.3 μm PAH feature in the nuclear spectra of 45% of our sample. The derived nuclear SFRs are, on average, five times lower than those measured in circumnuclear regions of 600 pc in size (median value). However, the projected nuclear SFR densities (median value of 22 M {sub ☉} yr{sup –1} kpc{sup –2}) are a factor of 20 higher than those measured on circumnuclear scales. This indicates that the SF activity per unit area in the central ∼65 pc region of Seyfert galaxies is much higher than at larger distances from their nuclei. We studied the connection between the nuclear SFR and M-dot {sub BH} and showed that numerical simulations reproduce our observed relation fairly well.

  16. Antibacterial Activity of Marine and Black Band Disease Cyanobacteria against Coral-Associated Bacteria

    Science.gov (United States)

    Gantar, Miroslav; Kaczmarsky, Longin T.; Stanić, Dina; Miller, Aaron W.; Richardson, Laurie L.

    2011-01-01

    Black band disease (BBD) of corals is a cyanobacteria-dominated polymicrobial disease that contains diverse populations of heterotrophic bacteria. It is one of the most destructive of coral diseases and is found globally on tropical and sub-tropical reefs. We assessed ten strains of BBD cyanobacteria, and ten strains of cyanobacteria isolated from other marine sources, for their antibacterial effect on growth of heterotrophic bacteria isolated from BBD, from the surface mucopolysaccharide layer (SML) of healthy corals, and three known bacterial coral pathogens. Assays were conducted using two methods: co-cultivation of cyanobacterial and bacterial isolates, and exposure of test bacteria to (hydrophilic and lipophilic) cyanobacterial cell extracts. During co-cultivation, 15 of the 20 cyanobacterial strains tested had antibacterial activity against at least one of the test bacterial strains. Inhibition was significantly higher for BBD cyanobacteria when compared to other marine cyanobacteria. Lipophilic extracts were more active than co-cultivation (extracts of 18 of the 20 strains were active) while hydrophilic extracts had very limited activity. In some cases co-cultivation resulted in stimulation of BBD and SML bacterial growth. Our results suggest that BBD cyanobacteria are involved in structuring the complex polymicrobial BBD microbial community by production of antimicrobial compounds. PMID:22073011

  17. Antibacterial Activity of Marine and Black Band Disease Cyanobacteria against Coral-Associated Bacteria

    Directory of Open Access Journals (Sweden)

    Laurie L. Richardson

    2011-10-01

    Full Text Available Black band disease (BBD of corals is a cyanobacteria-dominated polymicrobial disease that contains diverse populations of heterotrophic bacteria. It is one of the most destructive of coral diseases and is found globally on tropical and sub-tropical reefs. We assessed ten strains of BBD cyanobacteria, and ten strains of cyanobacteria isolated from other marine sources, for their antibacterial effect on growth of heterotrophic bacteria isolated from BBD, from the surface mucopolysaccharide layer (SML of healthy corals, and three known bacterial coral pathogens. Assays were conducted using two methods: co-cultivation of cyanobacterial and bacterial isolates, and exposure of test bacteria to (hydrophilic and lipophilic cyanobacterial cell extracts. During co-cultivation, 15 of the 20 cyanobacterial strains tested had antibacterial activity against at least one of the test bacterial strains. Inhibition was significantly higher for BBD cyanobacteria when compared to other marine cyanobacteria. Lipophilic extracts were more active than co-cultivation (extracts of 18 of the 20 strains were active while hydrophilic extracts had very limited activity. In some cases co-cultivation resulted in stimulation of BBD and SML bacterial growth. Our results suggest that BBD cyanobacteria are involved in structuring the complex polymicrobial BBD microbial community by production of antimicrobial compounds.

  18. San Diego Science Alliance Education Outreach Activities

    Science.gov (United States)

    Blue, Anne P.

    1996-11-01

    The General Atomics Science Education Outreach Activities as well as those of several other San Diego area institutions led to the formation in 1994 of the San Diego Science Alliance. The Science Alliance is a consortium of science-related industries, institutions of research and higher education, museums, medical health networks, and science competitions in support of K-12 science education. Some Alliance accomplishments include printing over 4000 resource catalogs for teachers, workshops presented by over 20 of their business members at the San Diego Science Education Conference, and hosting of 3 eight-week courses for teachers. The Alliance provides an important forum for interaction between schools and teachers and local industries and institutions. The Science Alliance maintains a World Wide Web Home Page at elvbf http://www.cerf.net/sd_science/. General Atomics' role in the San Diego Science Alliance will be presented.(Presented by Patricia S. Winter for the General Atomics Science Education Groups and San Diego Science Alliance.)

  19. Triglyceride concentration and waist circumference influence alcohol-related plasminogen activator inhibitor-1 activity increase in black South Africans.

    Science.gov (United States)

    Pieters, Marlien; de Lange, Zelda; Hoekstra, Tiny; Ellis, Suria M; Kruger, Annamarie

    2010-12-01

    We investigated the association between alcohol consumption and plasminogen activator inhibitor-1 activity (PAI-1act) and fibrinogen concentration in a black South African population presenting with lower PAI-1act and higher fibrinogen than what is typically observed in white populations. We, furthermore, wanted to investigate the effect of urbanization, sex, central obesity, increased triglycerides, 4G/5G polymorphism (PAI-1 only) and BMI on the association of alcohol with PAI-1act and fibrinogen. Data from 2010 apparently healthy, randomly collected black South African volunteers from the Prospective Urban and Rural Epidemiological (PURE) study were cross-sectionally analyzed. Alcohol consumption was recorded using quantitative food frequency questionnaires and fasting blood samples were collected for biochemical analysis including PAI-1act and fibrinogen. Heavy alcohol consumption is associated with significantly increased PAI-1act, in the total population as well as in the women separately, and tended to be so in men. This alcohol-related PAI-1act increase was observed in volunteers with increased triglycerides and central obesity but not in volunteers with normal levels and waist circumference. Urbanization, the 4G/5G polymorphism and BMI did not affect the association of alcohol with PAI-1act. Moderate alcohol consumption is associated with decreased fibrinogen concentration. Sex and level of urbanization did not affect the association of alcohol with fibrinogen. Fibrinogen decreased in normal and overweight volunteers but not in obese and centrally obese volunteers following moderate alcohol consumption. Triglyceride levels and waist circumference influence alcohol-related PAI-1act increase potentially through modulating adipocyte and triglyceride-induced PAI-1 production. Obesity prevented alcohol-related fibrinogen decrease possibly by counteracting the anti-inflammatory effect of moderate alcohol consumption.

  20. Physiological and behavioral factors related to physical activity in black women with type 2 diabetes mellitus.

    Science.gov (United States)

    Allen, Nancy A; Melkus, Gail D; Chyun, Deborah A

    2011-10-01

    To describe relationships among physical activity (PA), physiological factors, and psychological factors in Black women with type 2 diabetes mellitus (T2DM). A cross-sectional design was used (N = 109). Data were collected on PA(activity/inactivity, TV hours, bed confinement), physiology (blood pressure, lipids, hemoglobin A1c), psychology (anxiety,emotional distress, physical functioning, bodily pain, vitality), and health care provider (HCP) support. Walking was the preferred PA; TV viewing averaged 3.7 hours/day, and 24% reported confinement to bed >1 week in the last year. Inactive women had greater physiological and psychological problems than active women. Women watching TV >2 hours/day had more physiological problems than women watching TV Women reporting >1 week of confinement to bed in the last year had more physiological and psychological problems than those confined to bed women with T2DM should promote walking, address TV viewing time, incorporate HCP’s role of PA counseling/support,and address several psychological factors.

  1. Antimutagenic activity of green tea and black tea extracts studied in a dynamic in vitro gastrointestinal model

    NARCIS (Netherlands)

    Krul, C.A.M.; Luiten-Schuite, A.; Tenfelde, A.; Ommen, B. van; Verhagen, H.; Havenaar, R.

    2001-01-01

    An in vitro gastrointestinal model, which simulates the conditions in the human digestive tract, was used to determine potential antimutagenic activity of extracts of black tea and green tea. In this paper, results are presented on the availability for absorption of potential antimutagenic compounds

  2. In vitro anti-hyaluronidase activity of Sri Lankan low grown orthodox orange pekoe grade black tea (Camellia sinensis L.

    Directory of Open Access Journals (Sweden)

    Wanigasekera Daya Ratnasooriya

    2014-12-01

    Conclusions: Sri Lankan low grown orthodox OP grade black tea has promising anti-hyaluronidase activity in vitro and has the potential to be used as an anti-aging cosmaceutical. In addition, it may prove useful as a beverage in the management of allergy, some joint diseases and envenomation.

  3. Relations of diet and physical activity to bone mass and height in black and white adolescents

    Directory of Open Access Journals (Sweden)

    Yanbin Dong

    2011-06-01

    Full Text Available Because the development of healthy bodies during the years of growth has life-long health consequences, it is important to understand the early influences of diet and physical activity (PA. One way to generate hypotheses concerning such influences is to conduct cross-sectional studies of how diet and PA are related to different components of body composition. The subjects were 660 black and white adolescents. Total body bone mineral content (BMC was measured with dual-energy X-ray absorptiometry; free-living diet and PA were assessed with 4-7 separate 24-h recalls. The main dietary variables investigated were: total energy intake, macronutrient distribution (%, dairy servings, vitamin D, and calcium. The main PA variables were hours of moderate PA (3-6 METs and vigorous PA (>6 METs. BMC was higher in blacks than in whites (P<0.01 and it increased more in boys than in girls (age by sex interaction as age increased (P<0.01. After adjustment for age, race and sex, higher levels of BMC were associated with higher levels of energy intake, dairy servings, calcium, vitamin D, and vigorous PA (all P 's<0.05. In the multivariable model, significant and independent proportions of the variance in BMC were explained by race, the age by sex interaction, calcium, and vigorous PA (all P 's<0.01. When height was used as the outcome variable, similar diet results were obtained; however, there was a sex by vigorous PA interaction, such that vigorous PA was associated with height only in the girls. These data are consistent with the hypothesis that the bone mass and height of growing youths are positively influenced by higher dietary intake of energy and dairy foods, along with sufficient amounts of vigorous PA. This hypothesis needs to be tested in randomized controlled trials.

  4. Effect Of Using Black Cumin (Nigella Sativa) As Natural Antioxidant On Hyperlipidaemia And Antioxidant Activities In Senile Rats

    International Nuclear Information System (INIS)

    HAMZA, R.G.; MAHMOUD, K.A.

    2009-01-01

    The black cumin (Nigella sativa) is one of the important herbal plants that used widely in most of human diseases and food preservation. Chemical composition of irradiated black cumin (10 kGy); moisture, ash, crude protein, crude lipid, total carbohydrate and crude fiber, were evaluated. The GC for analysis of fatty acids showed that the number of identified fatty acids was 9; the important one was linoleic (natural antioxidant). GC/MS used for analysis of essential oil showed that the number of identified compounds was 16; the important ones were thymoquinone, eugenol and linalool (natural antioxidants). Also, this study was performed to examine the efficacy of the black cumin to ameliorate the induced hyperlipidemia in senile rats. Twenty eight male rats were equally and randomly categorized into four groups. High fat diet (20g fat / 100g diet) was daily administered to rats for 6 weeks. Other animals where fed daily on either raw or irradiated black cumin diet (1% w/w) for 6 weeks. The results revealed that high fat diet fed to rats significantly induced an increase in serum phospholipids, TG, TC, LDL-C, atherogenic index and lipid peroxides (MDA). Significant decrease was observed in HDL-C, blood antioxidant enzymes activity (superoxide dismutase and catalase) and concentration of reduced glutathione (GSH). The results obtained revealed that feeding rats on diet containing either raw or irradiated black cumin (1% w/w) induced significant improvement in the above mentioned parameters. There was non- significant difference between non-irradiated and irradiated black cumin. Moreover, supplementation of black cumin in diet of rats can offer protection against free radicals generated through oxidative stress as a consequence of hyperlipidemic food.

  5. Imagine the Universe! The Anatomy of Black Holes. Probing the Structure & Evolution of the Cosmos. An Information and Activity Booklet. Grades 9-12, 1998-1999.

    Science.gov (United States)

    Whitlock, Laura A.; Granger, Kara C.; Mahon, Jane D.

    The information provided in this booklet is meant to give the necessary background information so that the science of black holes can be taught confidently to secondary students. The featured activities can be used to engage and excite students about the topic of black holes in different disciplines and in a number of ways. Activities include: (1)…

  6. Starchild Presents...StarChild: A Learning Center for Young Astronomers. Black Holes. An Information and Activity Booklet. Grades K-8, 1998-1999.

    Science.gov (United States)

    Truelove, Elizabeth; Dejoie, Joyce

    The information provided in this booklet is meant to give the necessary background information so that the science of black holes can be taught confidently to elementary students. The featured activities can be used to engage and excite students about the topic of black holes in different disciplines and in a number of ways. Activities include:…

  7. Scales of political action and social movements in education: the case of the Brazilian Black Movement and Law 10.639

    NARCIS (Netherlands)

    Nascimento dos Santos, R.E.; Soeterik, I.M.

    2016-01-01

    This paper examines social coordination by the Brazilian Black Movement in the area of Brazilian education. It explains how these developments relate to the construction of race-based public education policies in the country. Focus goes to the process of creation and implementation of law 10.639 in

  8. Second-Class, Cash Strapped, Antiquated Institutions: Unbalanced Media Depictions of Historically Black Colleges and Universities in the "Chronicle of Higher Education"

    Science.gov (United States)

    Waymer, Damion; Street, Joshua

    2016-01-01

    Purpose: The purpose of this paper is to examine "The Chronicle of Higher Education", a leading site for higher education news and politics, and its representation of historically black colleges and universities (HBCUs). Design/methodology/approach: Frames are strong discursive tools that can help social actors achieve the following:…

  9. Understanding the Black Aesthetic Experience.

    Science.gov (United States)

    Curtis, Marvin V.

    1988-01-01

    Discussing the importance of the Black aesthetic experience, Curtis examines Black cultural heritage and participatory style, the spiritual, and the creation and recreation of Black music. Advocating multicultural music education in teacher training, he suggests that Black music be studied for its value and contribution to society. Lists five ways…

  10. Retelling the educational pathways of Black women physicists: Stories of experiencing and overcoming obstacles in life

    Science.gov (United States)

    Mensah, Felicia

    This is an empirical study on the underrepresentation of people of color in scientific careers. Grounded in critical race theory, the paper examines the lived experiences of six Black women physicists and addresses obstacles faced in their career paths and strategies used to overcome these obstacles. Data for this study were collected through semi-structured interviews and coded for emergent themes. The findings reveal that college recruitment and funding were fundamental for these women to choose physics over other STEM fields. In addition, Black women experience unique challenges of socialization in STEM, particularly by exclusion of study groups. We suggest physics departments provide a more inclusive environment to support Black women in science. CAPES, the Fulbright Program, Comissão Fulbright Brasil, and the Office of Diversity at Teachers College, Columbia University.

  11. Electrochemical properties of Super P carbon black as an anode active material for lithium-ion batteries

    International Nuclear Information System (INIS)

    Gnanamuthu, RM.; Lee, Chang Woo

    2011-01-01

    Highlights: → A novel attempt of Super P carbon black as an anode active material for lithium-ion batteries. → The first discharge capacity was approximately 1256 mAh g -1 and at the end of 20th cycling the capacity was 610 mAh g -1 at 0.1 C rate. → Coulombic efficiency of Super P carbon black electrode was maintained about 84% at the end of cycling. - Abstract: A new approach to investigate upon the electrochemical properties of Super P carbon black anode material is attempted and compared with conventional mesophase pitch-based carbon fibers (MPCFs) anode material for lithium-ion batteries. The prepared Super P carbon black electrodes are characterized using transmission electron microscope (TEM). The assembled 2032-type coin cells are electrochemically characterized by ac impedance spectroscopic and cyclic voltammetric methods. The electrochemical performance of charge and discharge was analyzed using a battery cycler at 0.1 C rate and cut-off potentials of 1.20 and 0.01 V vs. Li/Li + . The electrochemical test illustrates that the discharge capacity corresponding to Li intercalation into the Super P carbon black electrode is higher and coulombic efficiency is maintained approximately 84% at the end of the 20th cycling at room temperature.

  12. Education activities of the US Department of Energy's Office of Civilian Radioactive Waste Management

    International Nuclear Information System (INIS)

    King, J.P.

    1991-01-01

    This paper reports that science education has long been a critical element in the U.S. Department of Energy's (DOE) Civilian Radioactive Waste Management Program. OCRWM has developed educational programs aimed at improving the science literacy of students from kindergarten through college and post-graduate levels, enhancing the skills of teachers, encouraging careers in science and engineering, and developing a keener awareness of science issues among the general population. Activities include interaction with educators in the development of curricula material; workshops for elementary and secondary students; cooperative agreements and projects with universities; OCRWM exhibit showings at technical and non-technical meetings and at national and regional teacher/educator conferences; the OCRWM Fellowship Program; and support for Historically Black Colleges and Universities

  13. Black to Black

    DEFF Research Database (Denmark)

    Langkjær, Michael Alexander

    2012-01-01

    Pop musicians performing in black stage costume take advantage of cultural traditions relating to matters black. Stylistically, black is a paradoxical color: although a symbol of melancholy, pessimism, and renunciation, black also expresses minimalist modernity and signifies exclusivity (as is hi...... suggested that appreciation of the highly personal motives of both Siouxsie Sioux and Janelle Monáe in wearing black may be achieved via analogies with the minimalist sublime of American artists Frank Stella’s and Ad Reinhardt’s black canvasses.......Pop musicians performing in black stage costume take advantage of cultural traditions relating to matters black. Stylistically, black is a paradoxical color: although a symbol of melancholy, pessimism, and renunciation, black also expresses minimalist modernity and signifies exclusivity (as...... is hinted by Rudyard Kipling’s illustration of ‘The [Black] Cat That Walked by Himself’ in his classic children’s tale). It was well understood by uniformed Anarchists, Fascists and the SS that there is an assertive presence connected with the black-clad figure. The paradox of black’s abstract elegance...

  14. Physicochemical Properties, Biological Activity, Health Benefits, and General Limitations of Aged Black Garlic: A Review.

    Science.gov (United States)

    Ryu, Ji Hyeon; Kang, Dawon

    2017-06-01

    Garlic (Allium sativum) has been used as a medicinal food since ancient times. However, some people are reluctant to ingest raw garlic due to its unpleasant odor and taste. Therefore, many types of garlic preparations have been developed to reduce these attributes without losing biological functions. Aged black garlic (ABG) is a garlic preparation with a sweet and sour taste and no strong odor. It has recently been introduced to Asian markets as a functional food. Extensive in vitro and in vivo studies have demonstrated that ABG has a variety of biological functions such as antioxidant, anti-inflammatory, anti-cancer, anti-obesity, anti-diabetic, anti-allergic, cardioprotective, and hepatoprotective effects. Recent studies have compared the biological activity and function of ABG to those of raw garlic. ABG shows lower anti-inflammatory, anti-coagulation, immunomodulatory, and anti-allergic effects compared to raw garlic. This paper reviews the physicochemical properties, biological activity, health benefits, adverse effects, and general limitations of ABG.

  15. A potent chitinolytic activity of Alternaria alternata isolated from Egyptian black sand.

    Science.gov (United States)

    Sharaf, Eman Fathi

    2005-01-01

    Eight fungal species characterized by chitinolytic activity were isolated from Egyptian black sand collected from Rosetta coast. Genus Aspergillus and Alternaria alternata exhibited the highest density (> 40% of the total count, each) on the isolation plates containing different treatments of native shrimp shell chitin. Genus Aspergillus was represented by A. flavus, A. niger, A. foetidus and A. tungius, with the former species being the most dominant. The other species were Cladosporium herbarum, Fusarium equisitum (5.71% of the total count, each) and Dendryphiella vinosa (3.21% of the total count). The isolated species were screened for chitinase production on agar plates containing 0.2% colloidal chitin. The chitinolytic activity of each individual was not always correlated with its density on the isolation plates. Alternaria alternata was the most promising species for chitinase excretion. The use of colloidal chitin (1.5%) as a sole carbon source was superior for the enzyme production by A. alternata. Maximum enzyme yield was obtained after 7 days incubation at 30 degrees C with shaking (150 rev min(-1)), with an initial pH value of the growth medium at 5.0. Presence of NaNO3 (0.3%), the best nitrogen source, and CaCl2 (100 microg/ml) stimulated the induction of the enzyme. The crude A. alternata chitinase revealed a potential insecticidal effect on the larvae of fruitfly (82% mortality) and could degrade crude shrimp shell waste.

  16. Physicochemical Properties, Biological Activity, Health Benefits, and General Limitations of Aged Black Garlic: A Review

    Directory of Open Access Journals (Sweden)

    Ji Hyeon Ryu

    2017-06-01

    Full Text Available Garlic (Allium sativum has been used as a medicinal food since ancient times. However, some people are reluctant to ingest raw garlic due to its unpleasant odor and taste. Therefore, many types of garlic preparations have been developed to reduce these attributes without losing biological functions. Aged black garlic (ABG is a garlic preparation with a sweet and sour taste and no strong odor. It has recently been introduced to Asian markets as a functional food. Extensive in vitro and in vivo studies have demonstrated that ABG has a variety of biological functions such as antioxidant, anti-inflammatory, anti-cancer, anti-obesity, anti-diabetic, anti-allergic, cardioprotective, and hepatoprotective effects. Recent studies have compared the biological activity and function of ABG to those of raw garlic. ABG shows lower anti-inflammatory, anti-coagulation, immunomodulatory, and anti-allergic effects compared to raw garlic. This paper reviews the physicochemical properties, biological activity, health benefits, adverse effects, and general limitations of ABG.

  17. Antifeedant, insecticidal and growth inhibitory activities of selected plant oils on black cutworm, Agrotis ipsilon (Hufnagel (Lepidoptera: Noctuidae

    Directory of Open Access Journals (Sweden)

    Alagarmalai Jeyasankar

    2012-05-01

    Full Text Available Objective: To evaluate antifeedant, insecticidal and insect growth inhibitory activities of eucalyptus oil (Eucalyptus globules and gaultheria oil (Gaultheria procumbens L. against black cutworm, Agrotis ipsilon. Methods: Antifeedant, insecticidal and growth inhibitory activities of eucalyptus oil and gaultheria oil were tested against black cutworm, A. ipsilon. Results: Significant antifeedant activity was found in eucalyptus oil (96.24% where as the highest insecticidal activity was noticed in gaultheria oil (86.92%. Percentages of deformities were highest on gaultheria oil treated larvae and percentage of adult emergence was deteriorated also by gaultheria oil. Conclusions: These plants oil has potential to serve as an alternative eco-friendly control of insect pest.

  18. When Lions Write History: Black History Textbooks, African-American Educators, & the Alternative Black Curriculum in Social Studies Education, 1890-1940

    Science.gov (United States)

    King, LaGarrett J.

    2014-01-01

    The African proverb, "Until the lions have their historians, tales of the hunt shall always glorify the hunter," is used to metaphorically describe how dominant groups inscribe power through historical narrative. In this article the author discusses how African-American educators between the years of 1890-1940 conceptualized citizenship…

  19. The teaching staff of the public education system in the period of the First Russian Revolution (1905–1907 years (on the materials of the Black Sea province

    Directory of Open Access Journals (Sweden)

    Konstantin V. Taran

    2016-03-01

    Full Text Available The article on the basis of archival documents examines the role of teaching staff of educational institutions of the Black Sea province during the First Russian revolution. The attention is paid to the participation of students of senior classes in the revolutionary movement. Among the materials are the archival documents of central and regional archives, namely the state archive of the Russian Federation, Russian state military historical archive, the state archive of the Krasnodar Krai, the center for documentation of contemporary history of Krasnodar Krai and the archive department of historical museum of city-resort Sochi. The authors come to the conclusion that on the territory of the Black Sea province, the activities of significant part of the teaching staff were aimed at destabilization of the political situation, contributing to the overthrow of the existing government. Rather than to protect the high schools students from the influence of political propaganda and to return students to the classrooms, some teachers have contributed to reverse the process, encouraging the study of the political programs of the parties and the desire to participate in the revolutionary movement. As a result, the schoolchildren, minors with unsettled teenage psychology participated in various revolutionary actions, which could lead to the tragic consequences.

  20. (Un)Doing Hegemony in Education: Disrupting School-to-Prison Pipelines for Black Males

    Science.gov (United States)

    Dancy, T. Elon, II

    2014-01-01

    The school-to-prison pipeline refers to the disturbing national trend in which children are funneled out of public schools and into juvenile and criminal justice systems. The purpose of this article is to theorize how this pipeline fulfills societal commitments to black male over-incarceration. First, the author reviews the troublesome perceptions…

  1. The Agony of Education. Black Students at White Colleges and Universities.

    Science.gov (United States)

    Feagin, Joe R.; Vera, Hernan; Imani, Nikitah

    This book examines the barriers that African American students encounter in colleges that are predominantly white. Although many people, and much of the media, have presented a picture of U.S. universities as strongholds of multiculturalism that are devoted to racial equality. Interviews with 36 randomly selected black juniors and seniors at a…

  2. Business in Social Work Education: A Historically Black University's Social Work Entrepreneurship Project

    Science.gov (United States)

    Archibald, Paul; Muhammad, Omar; Estreet, Anthony

    2016-01-01

    The destabilization of the current economy has sparked increased interest in entrepreneurship, especially for underrepresented minority social work students. The entrepreneurial thinking of these social work students entering social work programs at historically Black colleges and universities needs to be fostered in a learning environment. This…

  3. Investing in Diversity in London Schools: Leadership Preparation for Black and Global Majority Educators

    Science.gov (United States)

    Johnson, Lauri; Campbell-Stephens, Rosemary

    2010-01-01

    This article traces the historical roots, describes the philosophy and curriculum, and analyzes the approach to leadership in Investing in Diversity, a 1-year Black-led leadership development course in the London schools. An exploratory qualitative case study approach was used to collect historical and empirical data about the program over a…

  4. The Diverse Educational Needs and Challenges of Information Technology Teachers in Two Black Rural Schools

    Science.gov (United States)

    Mentz, Elsa; Bailey, Roxanne; Havenga, Marietjie; Breed, Betty; Govender, Desmond; Govender, Irene; Dignum, Frank; Dignum, Virginia

    2012-01-01

    This article reflects on the first phase of a research project aimed at the empowerment of Information Technology (IT) teachers in black rural schools in the North-West province of South Africa. In order to empower these IT teachers, the first phase aimed at understanding their unique challenges and needs. Qualitative research methodology was used…

  5. Health Literacy and Education as Mediators of Racial Disparities in Patient Activation Within an Elderly Patient Cohort.

    Science.gov (United States)

    Eneanya, Nwamaka D; Winter, Michael; Cabral, Howard; Waite, Katherine; Henault, Lori; Bickmore, Timothy; Hanchate, Amresh; Wolf, Michael; Paasche-Orlow, Michael K

    2016-01-01

    The Patient Activation Measure (PAM) assesses facets of patient engagement to identify proactive health behaviors and is an important predictor of health outcomes. Health literacy and education are also important for patient participation and successful navigation of the health care system. Because health literacy, education, and patient activation are associated with racial disparities, we sought to investigate whether health literacy and education would mediate racial differences in patient activation. Participants were 265 older adults who participated in a computer-based exercise interventional study. Health literacy was assessed using the Test of Functional Health Literacy in Adults (TOFHLA). Of 210 eligible participants, 72% self-identified as Black and 28% as White. In adjusted analyses, education and health literacy each significantly reduced racial differences in patient activation. These findings are especially important when considering emerging data on the significance of patient activation and new strategies to increase patient engagement.

  6. Anthocyanin contents in the seed coat of black soya bean and their anti-human tyrosinase activity and antioxidative activity.

    Science.gov (United States)

    Jhan, J-K; Chung, Y-C; Chen, G-H; Chang, C-H; Lu, Y-C; Hsu, C-K

    2016-06-01

    The seed coat of black soya bean (SCBS) contains high amount of anthocyanins and shows antioxidant and anti-mushroom tyrosinase activities. The objectives of this study were to analyse the anthocyanins in SCBS with different solvents and to find the relationship between anthocyanin profile with anti-human and anti-mushroom tyrosinase activities. SCBS was extracted with hot water, 50 and 80% ethanol, 50 and 80% acetone and 50 and 80% acidified acetone. Total phenol and total flavonoid contents in the extracts were determined. Anthocyanins in the extracts were analysed using HPLC and LC/MS/MS. A genetically engineered human tyrosinase was used to evaluate the anti-tyrosinase potential of the extracts from SCBS. 80% acetone extract from SCBS obtained the highest total phenol, total flavonoid and cyanidin-3-O-glucoside (C3G) contents among all the extracts, whereas the hot water extract showed the lowest antioxidant contents. Three anthocyanin compounds were found in all the extracts from SCBS, and the analysis of HPLC and LC/MS/MS indicated that they were C3G, delphinidin-3-O-glucoside (D3G) and peonidin-3-O-glucoside (P3G). The ratios of C3G (2.84 mg g(-1) ), D3G (0.34 mg g(-1) ) and P3G (0.35 mg g(-1) ) in 80% acidified acetone extract were 76.6, 9.1 and 9.3%, respectively. All the extracts from SCBS possessed anti-human tyrosinase activity. Moreover, a good correlation was found between the anti-human tyrosinase activities and C3G contents in the extracts. Antioxidants in SCBS also possess anti-human and anti-mushroom tyrosinase activities. © 2015 Society of Cosmetic Scientists and the Société Française de Cosmétologie.

  7. 22 CFR 146.400 - Education programs or activities.

    Science.gov (United States)

    2010-04-01

    ... Basis of Sex in Education Programs or Activities Prohibited § 146.400 Education programs or activities... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Education programs or activities. 146.400 Section 146.400 Foreign Relations DEPARTMENT OF STATE CIVIL RIGHTS NONDISCRIMINATION ON THE BASIS OF SEX...

  8. "Machismo," self-esteem, education and high maximum drinking among anglo, black and Mexican-American male drinkers.

    Science.gov (United States)

    Neff, J A; Prihoda, T J; Hoppe, S K

    1991-09-01

    This study seeks to clarify the relevance of machismo to patterns of high maximum drinking among male drinkers. Specifically, the study describes the psychometric properties of a newly developed 7-item machismo measure, compares levels of machismo and self-esteem for a sample of Anglo, black and Mexican-American males, and examines both main and interaction effects of machismo, self-esteem and education as predictors of alcohol use in these racial/ethnic subgroups. Logistic regression analyses document interaction between race/ethnicity, machismo, self-esteem and education, which calls into question the presumed importance of machismo as a cultural element causing heavy drinking patterns among Mexican-American males.

  9. 75 FR 34994 - Office of Postsecondary Education; Overview Information; Predominantly Black Institutions Formula...

    Science.gov (United States)

    2010-06-21

    ... education; and to strengthen the financial ability of the institutions to serve the academic needs of these... provide, within the State an educational program for which the institution of higher education awards a... Institution means an institution of higher education, as defined in section 101(a) of the HEA-- (A) That is an...

  10. Creativity and the Transformation of Higher Education: The Need for a Black Mountain College Approach

    Science.gov (United States)

    Emanuel, Richard C.; Challons-Lipton, Siu

    2013-01-01

    The need for increased creativity in education is currently being proposed in much innovative thinking on higher education as universities are forced to recreate themselves. There are four conditions facing higher education worldwide: alignment, motivation, connection, and direction. Higher education is characterized by a hierarchy of subjects and…

  11. Phenolic acids, anthocyanins, proanthocyanidins, antioxidant activity, minerals and their correlations in non-pigmented, red, and black rice.

    Science.gov (United States)

    Shao, Yafang; Hu, Zhanqiang; Yu, Yonghong; Mou, Renxiang; Zhu, Zhiwei; Beta, Trust

    2018-01-15

    Soluble-free, soluble-conjugated, insoluble-bound phenolics and antioxidant activity, flavonoid (TFC), proanthocyanidins (TPAC), anthocyanins and minerals of fifteen whole rice grains with different colors were investigated. Soluble-free protocatechuic and vanillic acids were only quantified in black rice, which had the most quantities. Non-pigmented rice had no detectable conjugated protocatechuic and 2,5-dihydroxybenzoic acids both of which were found in black and red rice, respectively. The main bound phenolic acids were ferulic and p-coumaric, as well as 2,5-dihydroxybenzoic in red rice and protocatechuic and vanillic acids in black rice. Soluble-conjugated phenolics, TFC, and anthocyanins were negatively correlated with L ∗ , b ∗ , C and H° values. TPAC was positively correlated with a ∗ (P<0.01). Protocatechuic, vanillic, syringic and ferulic acids were associated with TPC and antioxidant activity in the soluble-conjugated fraction while protocatechuic and ferulic acid were correlated with those in the insoluble-bound fraction. Principal component analysis divided samples into non-pigmented, red and black rice groups. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Concurrent activity of anammox and denitrifying bacteria in the Black Sea.

    Science.gov (United States)

    Kirkpatrick, John B; Fuchsman, Clara A; Yakushev, Evgeniy; Staley, James T; Murray, James W

    2012-01-01

    After the discovery of ANaerobic AMMonium OXidation (anammox) in the environment, the role of heterotrophic denitrification as the main marine pathway for fixed N loss has been questioned. A 3 part, 15 month time series investigating nitrite reductase (nirS) mRNA transcripts at a single location in the Black Sea was conducted in order to better understand the activity of anammox and denitrifying bacteria. Here we show that both of these groups were active, as well as being concurrent in the lower suboxic zone over this time span. Their distributions, however, differed in that only expression of denitrification-type nirS was seen in the upper suboxic zone, where geochemistry was variable. Depth profiles covering the suboxic zone showed that the four groups of anammox-type sequences were expressed consistently in the lower suboxic zone, and were consistent with anammox 16 S rDNA gene profiles. By contrast, denitrifier-type nirS sequence groups were mixed; some groups exhibited consistent expression in the lower suboxic zone, while others appeared less consistent. Co-occurrence of both anammox and denitrifier expression was common and ongoing. Both types of transcripts were also found in samples with low concentrations of sulfide (>2 μM). Six major groups of denitrifier-type nirS transcripts were identified, and several groups of denitrifier-type nirS transcripts were closely related to sequences from the Baltic Sea. An increase in denitrifier-type nirS transcript diversity and depth range in October 2007 corresponded to a small increase in mixed layer net community productivity (NCP) as measured by O(2)/Ar gas ratios, as well as to an increase in N(2) concentrations in the suboxic zone. Taken together, the variations in expression patterns between anammox and denitrification provide one possible explanation as to how near instantaneous rate measurements, such as isotope spike experiments, may regularly detect anammox activity but underreport denitrification.

  13. In vitro antioxidant activity of pet ether extract of black pepper

    Science.gov (United States)

    Singh, Ramnik; Singh, Narinder; Saini, B.S.; Rao, Harwinder Singh

    2008-01-01

    Objective: To investigate the in vitro antioxidant activity of different fractions (R1, R2 and R3) obtained from pet ether extract of black pepper fruits (Piper nigrum Linn.) Materials and Methods: The fractions R1, R2 and R3 were eluted from pet ether and ethyl acetate in the ratio of 6:4, 5:5 and 4:6, respectively. 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) radical, superoxide anion radical, nitric oxide radical, and hydroxyl radical scavenging assays were carried out to evaluate the antioxidant potential of the extract. Results: The free radical scavenging activity of the different fractions of pet ether extract of P. nigrum (PEPN) increased in a concentration dependent manner. The R3 and R2 fraction of PEPN in 500 µg/ml inhibited the peroxidation of a linoleic acid emulsion by 60.48±3.33% and 58.89±2.51%, respectively. In DPPH free radical scavenging assay, the activity of R3 and R2 were found to be almost similar. The R3 (100µg/ml) fraction of PEPN inhibited 55.68±4.48% nitric oxide radicals generated from sodium nitroprusside, whereas curcumin in the same concentration inhibited 84.27±4.12%. Moreover, PEPN scavenged the superoxide radical generated by the Xanthine/Xanthine oxidase system. The fraction R2 and R3 in the doses of 1000µg/ml inhibited 61.04±5.11% and 63.56±4.17%, respectively. The hydroxyl radical was generated by Fenton's reaction. The amounts of total phenolic compounds were determined and 56.98 µg pyrocatechol phenol equivalents were detected in one mg of R3. Conclusions: P. nigrum could be considered as a potential source of natural antioxidant. PMID:20040947

  14. Anthocyanin and proanthocyanidin contents, antioxidant activity, and in situ degradability of black and red rice grains.

    Science.gov (United States)

    Hosoda, Kenji; Sasahara, Hideki; Matsushita, Kei; Tamura, Yasuaki; Miyaji, Makoto; Matsuyama, Hiroki

    2018-03-02

    An experiment was conducted to assess the antioxidant contents and activities of colored rice grains and to evaluate their nutritive characteristics in terms of chemical composition and in situ ruminal degradation. Ten cultivars of colored rice grains (Oryza sativa L.) collected from several areas of Japan were studied, and control rice without pigment, maize, barley, and wheat grains were used as control grains. Their chemical compositions, pigment, polyphenol contents, total antioxidant capacity (TAC), and degradation characteristics were determined. The starch contents of the colored rice grains were in the range of 73.5-79.6%, similar to that of the control rice grain. The black and red rice grains contained anthocyanin (maximum: 5045.6 µg/g) and proanthocyanidin (maximum: 3060.6 µg/g) at high concentrations as their principal pigments, respectively. There were significantly (p rice grains, indicating that the increase in pigment contents also contributed to the increased polyphenol content and TAC values in the colored rice grains. The dry matter and starch degradation characteristics, as represented by c (fractional degradation rate of slowly degradable fraction) and by the effective degradability, of the colored rice grains and the control rice grain were ranked as follows among commonly used grains: wheat > barley ≥ rice > maize. The colored rice grains also included the most-digestible starch, since their potential degradable fraction and actual degradability at 48 h incubation were almost 100%. Colored rice grains have high potential to be used as antioxidant sources in addition to starch sources in ruminants.

  15. Crack cocaine use and high-risk behaviors among sexually active black adolescents.

    Science.gov (United States)

    Fullilove, M T; Golden, E; Fullilove, R E; Lennon, R; Porterfield, D; Schwarcz, S; Bolan, G

    1993-06-01

    The recent spread of crack cocaine use among inner-city teenagers has been accompanied by dramatic increases in juvenile delinquency and sexually transmitted diseases (STDs) among teenagers. This study examined the prevalence of five factors which promote STDs, including human immunodeficiency virus (HIV), among a sample of sexually active black adolescent crack users and non-users from the San Francisco Bay Area. Significant differences were observed between these groups with respect to history of engaging in sexual intercourse under the influence of drugs or alcohol, exchanging sexual favors for drugs or money, condom use in the most recent sexual encounter, and having five or more sexual partners in the last year. Approximately 63% of all respondents reported engaging in at least one of these risk behaviors. In multiple logistic regression analysis, reporting one or more of these STD/HIV risk behaviors was significantly associated with crack use and having one or more relatives who used drugs. Intervention efforts need to address both individual and environmental risk factors in order to reduce teens' risk for STDs, including HIV.

  16. Educational pathways of Black women physicists: Stories of experiencing and overcoming obstacles in life

    Science.gov (United States)

    Rosa, Katemari

    2017-01-01

    This talk presents an empirical study on the underrepresentation of people of color in scientific careers. Grounded in Critical Race Theory, the presentation examines the lived experiences of six Black women physicists in the United States, addresses obstacles faced in their career paths, and strategies used to overcome these obstacles. Data for this study were collected through semi-structured interviews and coded for emergent themes, which are invitation to engage in science, communities of science practices, and isolation in the academy. The findings reveal that college recruitment and funding were fundamental for these women to choose Physics over other STEM fields. The analysis shows Physics can be a hostile environment for these women. In addition, Black women experience unique challenges of socialization in Physics, particularly by exclusion of study groups. In this talk, suggestions will be presented to make Physics departments a more inclusive space to support Black women in science. This presentation is based on work supported by the Brazilian government through CAPES (BEX1907-07-7), the Fulbright Program, Comissño Fulbright Brasil, and the Office of Diversity at Teachers College, Columbia University.

  17. Enhanced Activated Carbon Cathode Performance for Microbial Fuel Cell by Blending Carbon Black

    KAUST Repository

    Zhang, Xiaoyuan

    2014-02-04

    Activated carbon (AC) is a useful and environmentally sustainable catalyst for oxygen reduction in air-cathode microbial fuel cells (MFCs), but there is great interest in improving its performance and longevity. To enhance the performance of AC cathodes, carbon black (CB) was added into AC at CB:AC ratios of 0, 2, 5, 10, and 15 wt % to increase electrical conductivity and facilitate electron transfer. AC cathodes were then evaluated in both MFCs and electrochemical cells and compared to reactors with cathodes made with Pt. Maximum power densities of MFCs were increased by 9-16% with CB compared to the plain AC in the first week. The optimal CB:AC ratio was 10% based on both MFC polarization tests and three electrode electrochemical tests. The maximum power density of the 10% CB cathode was initially 1560 ± 40 mW/m2 and decreased by only 7% after 5 months of operation compared to a 61% decrease for the control (Pt catalyst, 570 ± 30 mW/m2 after 5 months). The catalytic activities of Pt and AC (plain or with 10% CB) were further examined in rotating disk electrode (RDE) tests that minimized mass transfer limitations. The RDE tests showed that the limiting current of the AC with 10% CB was improved by up to 21% primarily due to a decrease in charge transfer resistance (25%). These results show that blending CB in AC is a simple and effective strategy to enhance AC cathode performance in MFCs and that further improvement in performance could be obtained by reducing mass transfer limitations. © 2014 American Chemical Society.

  18. Advanced Chemical Reduction of Reduced Graphene Oxide and Its Photocatalytic Activity in Degrading Reactive Black 5

    Directory of Open Access Journals (Sweden)

    Christelle Pau Ping Wong

    2015-10-01

    Full Text Available Textile industries consume large volumes of water for dye processing, leading to undesirable toxic dyes in water bodies. Dyestuffs are harmful to human health and aquatic life, and such illnesses as cholera, dysentery, hepatitis A, and hinder the photosynthetic activity of aquatic plants. To overcome this environmental problem, the advanced oxidation process is a promising technique to mineralize a wide range of dyes in water systems. In this work, reduced graphene oxide (rGO was prepared via an advanced chemical reduction route, and its photocatalytic activity was tested by photodegrading Reactive Black 5 (RB5 dye in aqueous solution. rGO was synthesized by dispersing the graphite oxide into the water to form a graphene oxide (GO solution followed by the addition of hydrazine. Graphite oxide was prepared using a modified Hummers’ method by using potassium permanganate and concentrated sulphuric acid. The resulted rGO nanoparticles were characterized using ultraviolet-visible spectrophotometry (UV-Vis, X-ray powder diffraction (XRD, Raman, and Scanning Electron Microscopy (SEM to further investigate their chemical properties. A characteristic peak of rGO-48 h (275 cm−1 was observed in the UV spectrum. Further, the appearance of a broad peak (002, centred at 2θ = 24.1°, in XRD showing that graphene oxide was reduced to rGO. Based on our results, it was found that the resulted rGO-48 h nanoparticles achieved 49% photodecolorization of RB5 under UV irradiation at pH 3 in 60 min. This was attributed to the high and efficient electron transport behaviors of rGO between aromatic regions of rGO and RB5 molecules.

  19. THE BLACK HOLE MASS-BULGE LUMINOSITY RELATIONSHIP FOR ACTIVE GALACTIC NUCLEI FROM REVERBERATION MAPPING AND HUBBLE SPACE TELESCOPE IMAGING

    International Nuclear Information System (INIS)

    Bentz, Misty C.; Peterson, Bradley M.; Pogge, Richard W.; Vestergaard, Marianne

    2009-01-01

    We investigate the relationship between black hole mass and bulge luminosity for active galactic nuclei (AGNs) with reverberation-based black hole mass measurements and bulge luminosities from two-dimensional decompositions of Hubble Space Telescope host galaxy images. We find that the slope of the relationship for AGNs is 0.76-0.85 with an uncertainty of ∼0.1, somewhat shallower than the M BH ∝ L 1.0±0.1 relationship that has been fit to nearby quiescent galaxies with dynamical black hole mass measurements. This difference is somewhat perplexing, as the AGN black hole masses include an overall scaling factor that brings the AGN M BH -σ * relationship into agreement with that of quiescent galaxies. We discuss biases that may be inherent to the AGN and quiescent galaxy samples and could cause the apparent inconsistency in the forms of their M BH -L bulge relationships. Recent work by Graham, however, presents a similar slope of ∼0.8 for the quiescent galaxies and may bring the relationship for AGNs and quiescent galaxies into agreement.

  20. TEACHERS' VIEWS ON THE POTENTIAL USE OF ONLINE IN-SERVICE EDUCATION AND TRAINING ACTIVITIES

    Directory of Open Access Journals (Sweden)

    Mehmet KOKOC

    2011-10-01

    Full Text Available This study examined teacher’s views on the potential use of online in-service education and training (INSET activities. The study used a qualitative approach. A total of 13 in-service teachers from primary school, vocational school, science and art center, high school in Trabzon (on the Black Sea coast of Turkey participated in the study. To determine opinions of participants about the potential use of online INSET activities, a online conference was held to determine teachers’ views. The participants who had experienced traditional and face to face INSET courses discussed their INSET experiences and thoughts about online INSET activities. These views were transcribed and then analyzed using content analysis. The main conclusions are: with online INSET activities, especially time and place dependency can be overcome, and accommodation and transportation issues can be resolved. Teachers feel that online INSET activities can promote effective use of resources.

  1. Soluble urokinase plasminogen activator receptor as a prognostic marker of all-cause and cardiovascular mortality in a black population

    DEFF Research Database (Denmark)

    Botha, Shani; Fourie, Carla M T; Schutte, Rudolph

    2015-01-01

    BACKGROUND: Elevated inflammatory markers such as C-reactive protein (CRP) and interleukin-6 (IL-6) are well-known risk factors for cardiovascular mortality. The less familiar marker, soluble urokinase plasminogen activator receptor (suPAR), is known to predict cancer, infections and all-cause mo......BACKGROUND: Elevated inflammatory markers such as C-reactive protein (CRP) and interleukin-6 (IL-6) are well-known risk factors for cardiovascular mortality. The less familiar marker, soluble urokinase plasminogen activator receptor (suPAR), is known to predict cancer, infections and all......-cause mortality. We determined whether suPAR, CRP and IL-6 are predictive of both all-cause and cardiovascular mortality in a black population, highly burdened by cardiovascular disease and HIV infection. METHODS: We included 1425 black South Africans, of which 208 died within five years after baseline data...

  2. The Growth of Public Schools for Blacks, and the Emergence of Professional Black Savannahians.

    Science.gov (United States)

    Perdue, Robert E.

    The history of the growth of public education for the black masses, including topics such as racial attitudes toward black education, the financial problems facing black schools, and the political pressures that led to the development of a system of education for blacks, is traced and discussed in this paper -- specifically as it concerns…

  3. CO-Dark Star Formation and Black Hole Activity in 3C 368 at z = 1.131: Coeval Growth of Stellar and Supermassive Black Hole Masses

    Energy Technology Data Exchange (ETDEWEB)

    Lamarche, C.; Stacey, G.; Riechers, D.; Vishwas, A. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); Brisbin, D. [Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales, Avenida Ejército 441, 8370191 Santiago (Chile); Ferkinhoff, C. [Department of Physics, Winona State University, Winona, MN, 55987 (United States); Hailey-Dunsheath, S. [California Institute of Technology, Mail Code 301-17, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Nikola, T.; Spoon, H. [Cornell Center for Astrophysics and Planetary Science, Cornell University, Ithaca, NY 14853 (United States); Sharon, C. E., E-mail: cjl272@cornell.edu [Department of Physics and Astronomy, McMaster University, 1280 Main Street West, Hamilton, ON L85-4M1 (Canada)

    2017-02-10

    We present the detection of four far-infrared fine-structure oxygen lines, as well as strong upper limits for the CO(2–1) and [N ii] 205 μ m lines, in 3C 368, a well-studied radio-loud galaxy at z = 1.131. These new oxygen lines, taken in conjunction with previously observed neon and carbon fine-structure lines, suggest a powerful active galactic nucleus (AGN), accompanied by vigorous and extended star formation. A starburst dominated by O8 stars, with an age of ∼6.5 Myr, provides a good fit to the fine-structure line data. This estimated age of the starburst makes it nearly concurrent with the latest episode of AGN activity, suggesting a link between the growth of the supermassive black hole and stellar population in this source. We do not detect the CO(2–1) line, down to a level twelve times lower than the expected value for star-forming galaxies. This lack of CO line emission is consistent with recent star formation activity if the star-forming molecular gas has low metallicity, is highly fractionated (such that CO is photodissociated throughout much of the clouds), or is chemically very young (such that CO has not yet had time to form). It is also possible, although we argue it is unlikely, that the ensemble of fine-structure lines is emitted from the region heated by the AGN.

  4. Employment and the use of birth control by sexually active single Hispanic, black, and white women.

    Science.gov (United States)

    Kraft, J M; Coverdill, J E

    1994-11-01

    Previous studies of the use of birth control by sexually active single women tend to emphasize family background and aspirations, and restrict their attention to teenagers. We elaborate this framework by considering how labor market experiences might shape the birth control practices of women in their late teens and twenties. Data from the National Longitudinal Survey of Labor Force Experiences--Youth Cohort provide evidence that employment histories and wages influence birth control practices, net of the effects of family background, aspirations, and educational attainment. Several pronounced racial and ethnic differences are found.

  5. HIV/STI Prevention Among Heterosexually Active Black Adolescents With Mental Illnesses: Focus Group Findings for Intervention Development.

    Science.gov (United States)

    Brawner, Bridgette M; Jemmott, Loretta Sweet; Wingood, Gina; Reason, Janaiya; Mack, Niya

    Heterosexually active Black adolescents with mental illnesses are at increased risk for sexually transmitted infections (STIs), including HIV. However, few HIV/STI prevention interventions exist for this demographic. We held seven focus groups (N = 33) to elucidate social, cultural, and psychological factors that influence HIV/STI risk-related sexual behaviors in this understudied population. Seven themes emerged: (a) Blackness and media portrayals, (b) Blackness as a source of cultural resilience and pride, (c) psychosocial determinants of condom use, (d) consequences of engaging in sexual activity, (e) attitudes and beliefs toward sexual behaviors, (f) benefits of sexual activity, and (g) coping mechanisms. Participants also supported the feasibility of and interest in HIV/STI prevention programs integrated with mental health treatment. Transportation, potential breaches of confidentiality, and time were noted barriers to participation. Psychoeducational, skills-based programs are needed to address the sequelae of mental illnesses as they relate to the sexual decision-making process in adolescents. Copyright © 2017 Association of Nurses in AIDS Care. Published by Elsevier Inc. All rights reserved.

  6. OT2_ebergin_6: H3O+ as a tracer of Galactic Center Black Hole activity

    Science.gov (United States)

    Bergin, E.

    2011-09-01

    The center of the Milky Way harbors a now dormant massive black hole (Sgr A*). Over the years evidence has mounted that Sgr A* released an energetic X-ray flare nearly 100 years ago. The strongest evidence for this is the detection of reflected X-ray emission towards molecular clouds in the central regions of the galaxy. We believe that we have directed direct evidence of the effects of this flare due to the presence of warm (excitation termperature ~ 600-800 K) H3O+ in the envelope of the Sgr B2 molecular cloud. These observations were obtained as part of the HEXOS key program and in all we have detected H3O+ J,K = 1,1 through 11,11 each in absorption. These are the inversion transitions that lie at the bottom of a given K ladder. For J,K > 3 the transitions cannot be be excited by conventional collisional excitation or by radiative pumping. Instead our model strongly favors that the rotationally warm H3O+ is the result of formation pumping due to the strong impinging X-ray flux, potentially from Sgr A*. We propose to follow up this fantastic result with a small search for rotationally warm H3O+ absorption towards other galactic center molecular clouds that are strong continuum sources and are in close proximity to Sgr A*. This proposal follows a very interesting molecular astrophysical puzzle that may be a direct link to activity from the central engine of our galaxy.

  7. A Local Baseline of the Black Hole Mass - Host Galaxy Scaling Relations for Active Galaxies

    Science.gov (United States)

    Bennert, Vardha

    2017-08-01

    The discovery of relations between supermassive black holes (BHs) and their host-galaxy properties has sparked many observational studies pertaining both to the local Universe and cosmic history. Nevertheless, a clear understanding of their origin and fundamental drivers still eludes us. Studying the evolution of these relations depends on our understanding of the slope and scatter of local relations for active galaxies (AGNs). We propose a SNAP program of a unique sample of 84 local type-1 AGNs, spanning a wide range of BH masses (MBH), morphologies, and stellar masses. The high resolution WFC3/F814W images are essential for a detailed decomposition of the host-galaxy in the presence of a bright AGN point source, resulting in precise measurements of the different host-galaxy components and AGN luminosity free of host-galaxy contamination for a robust determination of MBH. When complemented with spatially-resolved Keck spectra to determine stellar-velocity dispersion within bulge effective radius, this yields a most complete baseline of host-galaxy properties over the entire range of MBH scaling relations. A typical SNAP completion rate results in a sample of 30 objects which will be used to calibrate existing Gemini NIRI and SDSS images. We will study slope and scatter of the relations, dependencies and fundamental drivers. The frequency of pseudo-bulges, bars, and (minor) mergers will reveal the dominant growth mechanism of spheroids. The homogeneous sample will identify any selection biases in the reverberation-mapped AGN sample which serves as a MBH calibrator for the entire Universe. Results will be compared with state-of-the-art semi-analytical models.

  8. Project Based Learning Activities in Engineering Education

    Directory of Open Access Journals (Sweden)

    Tiago Faustino Andrade

    2013-03-01

    Full Text Available In the present work, the author reports examples of his involvement in different teaching/learning methodologies during his five years of the Integrated Master Degree in Mechanical Engineering at the Faculty of Engineering of University of Porto. The aim is to explain how useful those experiences have been, allowing him to explore many techno-scientific activities within his engineering education while student as well as other transferable skills and later, up to the present, as a professional in academic environment. The author wishes to underline the excellent opportunity he had to practice reflection processes as an essential methodology of his engineering education.

  9. "You've Got to Be Tough and I'm Trying": Black and Minority Ethnic Student Teachers' Experiences of Initial Teacher Education

    Science.gov (United States)

    Wilkins, Chris; Lall, Rajinder

    2011-01-01

    Whilst Black and minority ethnic (BME) recruitment to initial teacher education (ITE) in the UK is increasing, completion rates are lower than for White students, and this study reports the experiences of BME student teachers on a primary postgraduate programme that had been particularly successful in increasing recruitment of BME students.…

  10. Review and Response to the Final Report of the National Black Health Providers Task Force on High Blood Pressure Education and Control.

    Science.gov (United States)

    Public Health Service (DHHS), Rockville, MD.

    This report presents the National Heart, Lung, and Blood Institute's (NHLBI) review of and response to the final report of the National Black Health Providers Task Force on High Blood Pressure Education and Control. The response includes a statement of NHLBI's involvement in health research, and descriptions of what steps can be taken to solve the…

  11. Super-massive binary black holes and emission lines in active galactic nuclei

    Science.gov (United States)

    Popović, Luka Č.

    2012-02-01

    It is now agreed that mergers play an essential role in the evolution of galaxies and therefore that mergers of supermassive black holes (SMBHs) must have been common. We see the consequences of past supermassive binary black holes (SMBs) in the light profiles of so-called 'core ellipticals' and a small number of SMBs have been detected. However, the evolution of SMBs is poorly understood. Theory predicts that SMBs should spend a substantial amount of time orbiting at velocities of a few thousand kilometers per second. If the SMBs are surrounded by gas observational effects might be expected from accretion onto one or both of the SMBHs. This could result in a binary Active Galactic Nucleus (AGN) system. Like a single AGN, such a system would emit a broad band electromagnetic spectrum and broad and narrow emission lines. The broad emission spectral lines emitted from AGNs are our main probe of the geometry and physics of the broad line region (BLR) close to the SMBH. There is a group of AGNs that emit very broad and complex line profiles, showing two displaced peaks, one blueshifted and one redshifted from the systemic velocity defined by the narrow lines, or a single such peak. It has been proposed that such line shapes could indicate an SMB system. We discuss here how the presence of an SMB will affect the BLRs of AGNs and what the observational consequences might be. We review previous claims of SMBs based on broad line profiles and find that they may have non-SMB explanations as a consequence of a complex BLR structure. Because of these effects it is very hard to put limits on the number of SMBs from broad line profiles. It is still possible, however, that unusual broad line profiles in combination with other observational effects (line ratios, quasi-periodical oscillations, spectropolarimetry, etc.) could be used for SMBs detection. Some narrow lines (e.g., [O III]) in some AGNs show a double-peaked profile. Such profiles can be caused by streams in the Narrow

  12. High Energy Activity of the Super-Massive Black Hole at the Galactic Center

    OpenAIRE

    Goldwurm, Andrea

    2007-01-01

    The centre of our galaxy hosts the nearest super-massive black hole to the solar system, identified to the compact radio source Sgr A*. High energy experiments have tried in the past to detect the X/gamma-ray emission expected from the accretion of the surrounding material into this super-massive black hole. Only recently however, thanks to the new generation of telescopes, it has been possible to reveal high energy radiation associated with Sgr A* or its close environment. I will review and ...

  13. The Educational Status of Black Males in America: The Agony and the Ecstacy.

    Science.gov (United States)

    Stewart, Mac A.

    1992-01-01

    Discusses problems facing African-American males, particularly in education and including low academic expectation, few African-American teachers, and development of positive self-image. Lists possible actions to take enhanced self-image, increased funding of programs to address social ills, and involvement of African-American males in education.…

  14. Opening the Black Box: Women's Empowerment and Innovative Secondary Education in Honduras

    Science.gov (United States)

    Murphy-Graham, Erin

    2008-01-01

    This article aims to clarify the relationship between education and women's empowerment. Drawing from qualitative data collected in a study of four Garifuna villages on the north coast of Honduras, it argues that education can trigger the empowerment process if it expands women's knowledge and understanding, self-confidence and awareness of gender…

  15. Do Black Families Value Education? White Teachers, Institutional Cultural Narratives, & Beliefs about African Americans

    Science.gov (United States)

    Puchner, Laurel; Markowitz, Linda

    2015-01-01

    In this article Puchner and Markowitz illustrate a major problem in education and in teacher education, the underlying dynamics of which are a national problem. The problem of negative beliefs about African American families in schools is not a new idea but actually stems from unfounded and untested assumptions about the way the world works and…

  16. "Expressive Cool" and the Paradox of Black and White Males' Neighborhood Socialization toward Education

    Science.gov (United States)

    Johnson, Odis, Jr.

    2018-01-01

    This study explores how linkages between adolescents' educational attitudes and achievement vary according to race, expressive culture, and neighborhood collective socialization qualities. Specifically, the study examines (a) racial differences in how males' educational attitudes relate to their academic performance (i.e.,…

  17. Antioxidant and Antibacterial Activity of Kombucha Beverages Prepared using Banana Peel, Common Nettles and Black Tea Infusions

    Directory of Open Access Journals (Sweden)

    Ali Ebrahimi Pure

    2016-03-01

    Full Text Available Backgrounds and Objective: Kombucha is a several thousand years old traditional fermented beverage originated from East. While black tea infusion is the common substrate for preparing kombucha, other herbal infusions can be applied for this reason too. Common medicinal herbs or even waste herbal materials, like banana peel, could be suitable substrates for preparing kombucha analogues. In this study, kombuchas were fermented using nettles leaf and banana peel infusions. Materials and Methods: Herbal infusions were fermented by kombucha fungi. Folin-Ciocalteu assay was performed to evaluate total phenolic contents; Free radical scavenging activity was evaluated using 2,2-diphenyl-1-picrylhydrazyl. Disk diffusion method was performed to measure inhibitory activity against testing bacteria. All data were statistically analyzed by ANOVA test at significant level of p≤0.05. Results and Conclusion: Black tea contained highest amount of phenolics (530.5 ppm gallic acid equivalent and fermentation decomposed approximately 50% of phenolic contents to 265.5 ppm while phenolic content of nettles infusion and fermented beverage were 173 gAE and 188 gAE respectively and for banana peel, 136.5 gAE and 155 gAE; it indicated increase of phenolic contents due to fermentation that may be cause of protein contents of nettles and banana peel gone under fermentation by lactic acid bacteria. Fermented beverage of three herbs had higher antioxidant potent than infusions. Kombucha from banana peel showed the highest antioxidant activity by inhibiting 94.62% of DPPH. While antioxidant activity of fermented beverages of black tea and nettles leaf were more related to their acetic acid content, it was found that a considerable part of antioxidant activity of banana peel kombucha was due to other acids and phenolics. No antibacterial activity was observed from either of samples. Banana peel, as a waste herbal material, and nettles leaf are good ingredients for being

  18. Active Learning in Engineering Education: A (Re)Introduction

    Science.gov (United States)

    Lima, Rui M.; Andersson, Pernille Hammar; Saalman, Elisabeth

    2017-01-01

    The informal network "Active Learning in Engineering Education" (ALE) has been promoting Active Learning since 2001. ALE creates opportunity for practitioners and researchers of engineering education to collaboratively learn how to foster learning of engineering students. The activities in ALE are centred on the vision that learners…

  19. The Benefits of Active Video Games for Educational and Physical Activity Approaches: A Systematic Review

    Science.gov (United States)

    Merino Campos, Carlos; del Castillo Fernández, Héctor

    2016-01-01

    This article sets out to conduct a systematic review of the current literature on active video games as potential educational tools for physical education or physical activity. To begin with, research on active video games for educational and physical purposes has been examined with the purpose of verifying improvement of attitudes, intellectual…

  20. EDUCATIONAL ACTIVITY OF OLDER PEOPLE IN POLAND – SELECTED ISSUES

    OpenAIRE

    Różański, Tomasz

    2016-01-01

    This article is devoted to the issues of educational activity of the elderly in Poland. Defining the term “old age” and drawing attention to the issue of human adaptation to old age were the starting points of the discussion. Next, the most important issues concerning the activity of seniors were raised. Further discussed were the conditions and objectives of the educational activity of older people. An attention was also drawn to the role of institutions, promoting education and culture, in ...

  1. Capacity Building Activities for Educational Stakeholders for Improving the Quality of Education

    Directory of Open Access Journals (Sweden)

    Ikhfan Haris

    2016-12-01

    Full Text Available The commitment of the Indonesian Government to improve the quality of education over the last decade has continued to pose a serious challenge to all stakeholders in the education system. One of the strategic approaches to improving education quality is through the employment of capacity building activities. This paper deals with capacity building activities for educational stakeholders in Kabupaten Sikka, Nusa Tenggara Timur Indonesia during the implementation of the Nusa Tenggara Timur Partnership Education Program (NTT PEP. Specifically, attention will be on the capacity building activities for education stakeholders such as school principals, school supervisors, Dinas Pendidikan (District Education Office staff, and school committee members in Kabupaten Sikka. Efforts will focus on how the capacity building activities have affected the performance of the schools in Kabupaten Sikka and how this has also been reflected in the level of improvement of education in Indonesia. Finally, what can be learned from the capacity building activities in Kabupaten Sikka will be highlighted.

  2. SYSTEMIC ACTIVITY OF NEONICOTINOIDS INFLUENCES FEEDING BY ADULT BLACK VINE WEEVILS ON VARIOUS SPECIES OF ORNAMENTALS

    Science.gov (United States)

    The black vine weevil (BVW) is a serious pest of ornamental nursery crops. The larval stage feeds on the roots of ornamental plants and small fruits often stunting or killing the plants. The adults feed on the foliage of ornamental plants. A standard management technique is to apply foliar treatm...

  3. Interannual variability of anticyclone activity and temperature extremes in the Black sea region

    Science.gov (United States)

    Kovalenko, O. Yu; Voskresenskaya, E. N.

    2018-01-01

    Manifestations of North Atlantic oscillation (NAO) during its negative and positive phases and during different El Niño (EN) types in the anticyclone parameters and air temperature extreme thresholds in the Black sea region are studied. It is estimated quantitative characteristics of anticyclone frequency anomalies and temperature extremes associated with the NAO phases and the EN types.

  4. Sri Lankan black tea (Camellia sinensis L. inhibits the methylglyoxal mediated protein glycation and potentiates its reversing activity in vitro

    Directory of Open Access Journals (Sweden)

    Walimuni Kanchana Subhashini Mendis Abeysekera

    2016-02-01

    Full Text Available Objective: To evaluate inhibitory activity of methylglyoxal (MGO mediated protein glycation and ability to potentiate its reversing activity and range of antioxidant properties of Sri Lankan low grown orthodox orange pekoe grade black tea. Methods: Freeze dried black tea brew (BTB was used as the sample in this study. Antiglycation and glycation reversing activity was studied in bovine serum albumin (BSA-MGO model. Antioxidant properties were studied using total polyphenolic content, total flavonoid content, 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid, 1,1-diphenyl-2-picrylhydrazine and ferric reducing antioxidant power in vitro antioxidant assays. Results: The results demonstrated significant (P < 0.05 and dose dependant inhibition of BSA-MGO glycation [IC50: (164.30 ± 4.85 µg/mL], potentiating of its reversing activity [EC50: (235.39 ± 5.37 µg/mL] and marked antioxidant properties [total polyphenolic content: (119.55 ± 9.97 mg gallic acid equivalents/g BTB; total flavonoid content: (6.04 ± 1.26 mg quercetin equivalents/g BTB; 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid, 1,1-diphenyl-2- picrylhydrazine and ferric reducing antioxidant power: (3.29 ± 0.06, (1.95 ± 0.15 and (1.31 ± 0.19 mmol Trolox equivalents/g BTB, respectively]. No correlations were observed between antioxidant activity and BSA-MGO glycation. Conclusions: The novel properties observed for Sri Lankan orange pekoe grade black tea indicate its usefulness as a supplementary beverage in managing MGO and advanced glycation end products related diseases and ailments.

  5. Educational Activity as a Problem of Adult Education in the Context of Globalization

    Science.gov (United States)

    Folvarochnyi, Ihor

    2014-01-01

    The article deals with the problem of adult education in the context of globalization. The analysis of scientific pedagogical literature devoted to studying of some aspects of educational activity in adult education has been conducted. The problem of public institutions development and activity has been analyzed in the broad context of…

  6. Connecting Physical Education to Out-of-School Physical Activity through Sport Education

    Science.gov (United States)

    Schwamberger, Benjamin; Sinelnikov, Oleg

    2015-01-01

    One of the goals of physical education, according to The Society of Health and Physical Educators, is for children to establish "patterns of regular participation in meaningful physical activity." However, participation alone in physical education classes is not enough for students to reach daily recommended levels of physical activity.…

  7. Enhancement of antioxidant activity, total phenolic and flavonoid content of black soybeans by solid state fermentation with Bacillus subtilis BCRC 14715.

    Science.gov (United States)

    Juan, Ming-Yen; Chou, Cheng-Chun

    2010-08-01

    In the present study, a solid state fermentation of black soybeans with Bacillus subtilis BCRC 14715 was performed. The effect of fermentation on the changes of total phenolic and flavonoid content and antioxidant activities including 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging effect, and Fe(2+)-chelating ability exerted by various solvent (water, 80% methanol, 80% ethanol, 80% acetone) extracts of black soybeans was examined. It was found that fermentation enhanced the total phenolic and flavonoid content as well as antioxidant activity of the black soybean extract. Among the various extracts examined, the acetone extract of fermented black soybeans showed the highest total phenolic and flavonoid content. The acetone extract and the methanol extract of fermented black soybeans showed the highest DPPH free radical-scavenging effect and Fe(2+)-chelating ability, respectively. Analysis of extraction yields showed that the active principle associated with the DPPH radical-scavenging effect was most efficiently extracted from black soybeans using water, regardless of fermentation. Water and methanol effectively extract the Fe(2+)-chelating principles from non-fermented and fermented black soybeans, respectively. Copyright 2009 Elsevier Ltd. All rights reserved.

  8. Estimates of increased black carbon emissions from electrostatic precipitators during powdered activated carbon injection for mercury emissions control.

    Science.gov (United States)

    Clack, Herek L

    2012-07-03

    The behavior of mercury sorbents within electrostatic precipitators (ESPs) is not well-understood, despite a decade or more of full-scale testing. Recent laboratory results suggest that powdered activated carbon exhibits somewhat different collection behavior than fly ash in an ESP and particulate filters located at the outlet of ESPs have shown evidence of powdered activated carbon penetration during full-scale tests of sorbent injection for mercury emissions control. The present analysis considers a range of assumed differential ESP collection efficiencies for powdered activated carbon as compared to fly ash. Estimated emission rates of submicrometer powdered activated carbon are compared to estimated emission rates of particulate carbon on submicrometer fly ash, each corresponding to its respective collection efficiency. To the extent that any emitted powdered activated carbon exhibits size and optical characteristics similar to black carbon, such emissions could effectively constitute an increase in black carbon emissions from coal-based stationary power generation. The results reveal that even for the low injection rates associated with chemically impregnated carbons, submicrometer particulate carbon emissions can easily double if the submicrometer fraction of the native fly ash has a low carbon content. Increasing sorbent injection rates, larger collection efficiency differentials as compared to fly ash, and decreasing sorbent particle size all lead to increases in the estimated submicrometer particulate carbon emissions.

  9. Characterization and Comparison of Photocatalytic Activity Silver Ion doped on TiO2(TiO2/Ag+) and Silver Ion doped on Black TiO2(Black TiO2/Ag+)

    Science.gov (United States)

    Kim, Jin Yi; Sim, Ho Hyung; Song, Sinae; Noh, Yeoung Ah; Lee, Hong Woon; Taik Kim, Hee

    2018-03-01

    Titanium dioxide (TiO2) is one of the representative ceramic materials containing photocatalyst, optic and antibacterial activity. The hydroxyl radical in TiO2 applies to the intensive oxidizing agent, hence TiO2 is suitable to use photocatalytic materials. Black TiO2was prepared through reduction of amorphous TiO2 conducting under H2 which leads to color changes. Its black color is proven that absorbs 100% light across the whole-visible light, drawing enhancement of photocatalytic property. In this study, we aimed to compare the photocatalytic activity of silver ion doped on TiO2(TiO2/Ag+) and silver ion doped on black TiO2(black TiO2/Ag+) under visible light range. TiO2/Ag+ was fabricated following steps. 1) TiO2 was synthesized by a sol-gel method from Titanium tetraisopropoxide (TTIP). 2) Then AgNO3 was added during an aging process step for silver ion doping on the surface of TiO2. Moreover, Black TiO2/Ag+ was obtained same as TiO2/Ag+ except for calcination under H2. The samples were characterized X-ray diffraction (XRD), UV-visible reflectance (UV-vis DRS), and Methylene Blue degradation test. XRD analysis confirmed morphology of TiO2. The band gap of black TiO2/Ag+ was confirmed (2.6 eV) through UV-vis DRS, which was lower than TiO2/Ag+ (2.9 eV). The photocatalytic effect was conducted by methylene blue degradation test. It demonstrated that black TiO2/Ag+ had a photocatalytic effect under UV light also visible light.

  10. Education & Recycling: Educator's Waste Management Resource and Activity Guide 1994.

    Science.gov (United States)

    California State Dept. of Conservation. Sacramento. Div. of Recycling.

    This activity guide for grades K-12 reinforces the concepts of recycling, reducing, and reusing through a series of youth-oriented activities. The guide incorporates a video-based activity, multiple session classroom activities, and activities requiring group participation and student conducted research. Constructivist learning theory was…

  11. Black Grade 9 learners in historically white suburban schools and ...

    African Journals Online (AJOL)

    Erna Kinsey

    This article investigates, from an educational psychological frame of reference, the situation of black1 Grade 9 learners in ... to solve deep-seated social problems. Klein. (1993:21) says that some ethnic minority parents respect education as .... participation in sport and cultural activities. • any current adjustment problems.

  12. The politics of particularism: HBCUs, Spelman College, and the struggle to educate Black women in science, 1950--1997

    Science.gov (United States)

    Scriven, Olivia A.

    Since the close of World War II, higher education has been central to the growth of U.S. science, but the role of historically Black colleges and universities (HBCUs) has been under-explored within this narrative. The nation's 105 HBCUs constitute less than one percent of the U.S. higher education community, but consistently have served as a major conduit for the production of African Americans in the sciences, technology, mathematics and engineering. National Science Foundation data reflect an average 29 percent share for the period 1994-2001. The output is even more striking when examined by degrees awarded in disciplinary clusters---50 percent in the agricultural sciences, 45 percent in the physical sciences and mathematics, and 42 percent in the biological sciences. This research explores the role of HBCUs in educating African Americans in science from the boosterism period shortly following World War II, through affirmative action legislation of the 1960s and 1970s, and concluding with current federal policies. A particular analysis is undertaken of Spelman College, a private liberal arts college founded by New England missionaries in the South during the late 19th century as a seminary for former slave women and girls. Spelman presents a unique case to analyze the particularistic characteristics of race, gender and institutional setting within the context of a so-called normative structure of science. Over a 25-year period, Spelman was able to rise beyond the structural limitations of its position as a Black college, a women's college, and a southern college to become one of the single most productive undergraduate institution for African American women earning the baccalaureate degree in science. What new perspectives might the Spelman story specifically and the history of HBCUs generally offer about the history of U.S. science, the notion that careers be open to talent, and current public policy discourse regarding efforts to increase the participation of

  13. Support for harmful treatment and reduction of empathy toward blacks: "Remnants" of stereotype activation involving Hurricane Katrina and "Lil' Kim"

    NARCIS (Netherlands)

    Johnson, J.D.; Bushman, B.J.

    2008-01-01

    Two experiments involving White participants tested the influence of media-based Black stereotypes on subsequent responses to Black and White persons-in-need. Experiment 1 showed that priming the "Black criminal" stereotype through exposure to photographs of Blacks looting after Hurricane Katrina

  14. Isolation and Preliminary Characterization of Proteinaceous Toxins with Insecticidal and Antibacterial Activities from Black Widow Spider (L. tredecimguttatus Eggs

    Directory of Open Access Journals (Sweden)

    Qian Lei

    2015-03-01

    Full Text Available The eggs of black widow spider (L. tredecimguttatus have been demonstrated to be rich in toxic proteinaceous components. The study on such active components is of theoretical and practical importance. In the present work, using a combination of multiple biochemical and biological strategies, we isolated and characterized the proteinaceous components from the aqueous extract of the black widow spider eggs. After gel filtration of the egg extract, the resulting main protein and peptide peaks were further fractionated by ion exchange chromatography and reversed-phase high performance liquid chromatography. Two proteinaceous components, named latroeggtoxin-III and latroeggtoxin-IV, respectively, were purified to homogeneity. Latroeggtoxin-III was demonstrated to have a molecular weight of about 36 kDa. Activity analysis indicated that latroeggtoxin-III exhibited neurotoxicity against cockroaches but had no obvious effect on mice, suggesting that it is an insect-specific toxin. Latroeggtoxin-IV, with a molecular weight of 3.6 kDa, was shown to be a broad-spectrum antibacterial peptide, showing inhibitory activity against all five species of bacteria tested, with the highest activity against Staphylococcus aureus. Finally, the implications of the proteinaceous toxins in egg protection and their potential applications were analyzed and discussed.

  15. Isolation and preliminary characterization of proteinaceous toxins with insecticidal and antibacterial activities from black widow spider (L. tredecimguttatus) eggs.

    Science.gov (United States)

    Lei, Qian; Yu, Hai; Peng, Xiaozhen; Yan, Shuai; Wang, Jirong; Yan, Yizhong; Wang, Xianchun

    2015-03-16

    The eggs of black widow spider (L. tredecimguttatus) have been demonstrated to be rich in toxic proteinaceous components. The study on such active components is of theoretical and practical importance. In the present work, using a combination of multiple biochemical and biological strategies, we isolated and characterized the proteinaceous components from the aqueous extract of the black widow spider eggs. After gel filtration of the egg extract, the resulting main protein and peptide peaks were further fractionated by ion exchange chromatography and reversed-phase high performance liquid chromatography. Two proteinaceous components, named latroeggtoxin-III and latroeggtoxin-IV, respectively, were purified to homogeneity. Latroeggtoxin-III was demonstrated to have a molecular weight of about 36 kDa. Activity analysis indicated that latroeggtoxin-III exhibited neurotoxicity against cockroaches but had no obvious effect on mice, suggesting that it is an insect-specific toxin. Latroeggtoxin-IV, with a molecular weight of 3.6 kDa, was shown to be a broad-spectrum antibacterial peptide, showing inhibitory activity against all five species of bacteria tested, with the highest activity against Staphylococcus aureus. Finally, the implications of the proteinaceous toxins in egg protection and their potential applications were analyzed and discussed.

  16. Education activities of the Eastern Carolina Section

    International Nuclear Information System (INIS)

    Eckenrode, M.; Hudson, O.N.

    1991-01-01

    The Eastern Carolinas Section (ECS) Education Committee has successfully tapped into all grade levels of eastern North Carolina's public schools. The keys to access are building a section organization geared toward education and maintaining a wide variety of products from which teachers can choose. The education committee conservatively estimates that in 1990 it relayed information on nuclear-related issues to over a thousand students

  17. New Aquatic Activities and Games for Secondary Physical Education

    Science.gov (United States)

    Banks, Aaron; Reimann, Bonnie

    2012-01-01

    The purpose of this article is to provide educators with usable, nontraditional aquatic activities that can be adapted for swimmers and non-swimmers alike. Educators are oriented to a variety of aquatic techniques designed to challenge both health- and skill-related fitness components. By using a series of activity cards, the authors have blended…

  18. Active Life of the Senior Citizens through Education

    Science.gov (United States)

    Taziev, Saljakhutdin Fardievich

    2015-01-01

    The paper presents reasons for including the senior citizens into educational process, as well as active age model. Education, communication and leisure system for the senior citizens, implemented by Yelabuga municipal district, is presented as a requirement for model realization. A core of the paper is the Active Age Institute. Its program…

  19. 24 CFR 3.400 - Education programs or activities.

    Science.gov (United States)

    2010-04-01

    ... Urban Development NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Education Programs or Activities... other sex. Such opportunities may be derived from either domestic or foreign sources. (d) Aids, benefits...

  20. 13 CFR 113.400 - Education programs or activities.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Education programs or activities. 113.400 Section 113.400 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION NONDISCRIMINATION... Financial Assistance Discrimination on the Basis of Sex in Education Programs Or Activities Prohibited § 113...

  1. Worries and Possibilities in Active Citizenship: Three Swedish Educational Contexts

    Science.gov (United States)

    Aldenmyr, Sara Irisdotter; Wigg, Ulrika Jepson; Olson, Maria

    2012-01-01

    This article examines how the concept of active citizenship has been given a neo-liberal character by examining practice in three different educational contexts in Sweden. The concept of active citizenship has become influential in educational policy and practice throughout the European Union. The aim of this article is to highlight concerns at…

  2. 76 FR 10014 - Predominantly Black Institutions Competitive Grant Program; Office of Postsecondary Education...

    Science.gov (United States)

    2011-02-23

    ..., technology, engineering, or mathematics (STEM); health education; internationalization or globalization... Numbering System Number, Taxpayer Identification Number, and Central Contractor Registry: To do business... can obtain a DUNS number from Dun and Bradstreet. A DUNS number can be created within one business day...

  3. [Usefulness of patient education in antihypertensive treatment compliance in black Africans].

    Science.gov (United States)

    Koffi, J; Konin, C; Gnaba, A; NGoran, Y; Mottoh, N; Guikahue, M K

    2018-02-01

    To evaluate the compliance for antihypertensive treatment and to assess the effects of patient education as tool to improve the compliance in hypertensive patients. We include prospectively all hypertensive patients followed in consultation in the cardiology department of the national police hospital in Ivory Coast. Compliance evaluation was made with the Girerd scale. After evaluation, all the patients benefit from an individual and/or collective education sessions. All the patients were followed and reevaluated after 1 year. We included consecutive 1000 hypertensive patients (mean age 40±20 years, 80 % male). Among these, 50 % have been treated by a single therapy, 30 % by a fixed double therapy and 25 % by a fixed triple combined therapy. At the start of the study, a low compliance is observed in 60 % of patients, 25 % have minimal problems of observance and 15 % are compliant. In 70 %, the low compliance may be explained by misconceptions and is associated with a persistent hypertension. One year after the education program, the compliance is improved: non-compliant patients represent 5 % of the population, 10 % having slight problems on compliance and 85 % have a good compliance. In hypertension, the therapeutic compliance is poor, and associated with various factors. However, patient education improves the therapeutic compliance and this should be systematically proposed in antihypertensive management in Africa. Copyright © 2017 Elsevier Masson SAS. All rights reserved.

  4. Political Economy of Right to Education in Rural China: Unpacking the Black Box of State

    NARCIS (Netherlands)

    Hong, Y.

    2011-01-01

    This dissertation approaches the inequality of basic education between urban and rural China from a human rights perspective and positions this issue in the context of Chinese political economy. It demonstrates the slackness of the Chinese state in the 1990s and its insufficient efforts in the 2000s

  5. Segregation and the Underrepresentation of Blacks and Hispanics in Gifted Education: Social Inequality and Deficit Paradigms

    Science.gov (United States)

    Ford, Donna Y.

    2014-01-01

    This article examines the underrepresentation of African American and Hispanic students in gifted education, proposing that social inequality, deficit thinking, and microaggressions contribute to the inequitable segregated programs. Underrepresentation trends are presented, along with methods for calculating underrepresentation and inequity.…

  6. A Black Educator in the Segregated South. Kentucky's Rufus B. Atwood.

    Science.gov (United States)

    Smith, Gerald L.

    This book reviews the career of Rufus Ballard Atwood, who served as president of Kentucky State University from 1929 to 1962. The book describes how he was often chosen by whites to represent the African American community on boards and commissions and how these appointments gave him access to the state's political and educational power structure.…

  7. Education and Fear: Black and Gay in the Public Sphere of HIV Prevention

    Science.gov (United States)

    Spieldenner, Andrew R.; Castro, Christian F.

    2010-01-01

    In the third decade of HIV/AIDS in the U.S., African American gay and bisexual men constitute the largest growing part of those testing HIV-positive. Education and prevention efforts are being refocused on this population, but there has been a dearth of research on health promotion efforts specifically tailored for this marginalized group. This…

  8. Activity pattern of the orphaned Asiatic Black Bear Ursus thibetanus (Mammalia: Carnivora: Ursidae cubs during rehabilitation processes.

    Directory of Open Access Journals (Sweden)

    S. Dasgupta

    2014-09-01

    Full Text Available Five Asiatic Black Bear Ursus thibetanus cubs aged between 6.5-15 months were studied for five months using instantaneous scan sampling (n=3049 scans while they were undergoing acclimatization in the rehabilitation areas in Pakke Tiger Reserve, Arunachal Pradesh, India. During the course of the study, feeding, moving, climbing, resting and playing activities were recorded in three consecutive time periods, representing three phases of acclimatization. The frequency of climbing and moving increased considerably towards the third phase, while feeding decreased. These changes can be attributed to a learning process during acclimatization. Time spent on moving and playing differed significantly among the bears, but not climbing or feeding.

  9. Prompt gamma activation analysis and time of flight neutron diffraction on 'black boxes' in the 'Ancient Charm' project

    International Nuclear Information System (INIS)

    Kasztovszky, Zs.; Kis, Z.; Belgya, T.; Kirfel, A.; Biro, K.T.

    2008-01-01

    The aim of the 'Ancient Charm' project is combining neutron tomography, prompt gamma activation analysis, time of flight neutron diffraction and neutron resonance transmission to generate elemental, and phase compositions of complex museum objects in 3D. To develop a protocol for such investigations, complex test samples were constructed and then analyzed by each method. The 'black boxes' are sealed iron and aluminum walled cubes, containing 2D or 3D arrangements of materials relevant for the compositions of archaeological samples. The experimental results obtained from bulk PGAA at BNC and TOF-ND at ISIS on two selected boxes are reported. (author)

  10. Black holes

    International Nuclear Information System (INIS)

    Feast, M.W.

    1981-01-01

    This article deals with two questions, namely whether it is possible for black holes to exist, and if the answer is yes, whether we have found any yet. In deciding whether black holes can exist or not the central role in the shaping of our universe played by the forse of gravity is discussed, and in deciding whether we are likely to find black holes in the universe the author looks at the way stars evolve, as well as white dwarfs and neutron stars. He also discusses the problem how to detect a black hole, possible black holes, a southern black hole, massive black holes, as well as why black holes are studied

  11. Professional development activities of teacher educators

    NARCIS (Netherlands)

    Jurrien Dengerink; dr.ir. Quinta Kools; Ko Melief; Mieke Lunenberg

    2011-01-01

    As all professionals, teacher educators are expected to develop themselves continuously during their working life in order to keep their knowledge and skills up to date. Smith (2003, p203) distinguishes three reasons for teacher educators to develop themselves: 1) to improve the profession (teacher

  12. Polyphenolic profile and biological activities of black carrot crude extract (Daucus carota L. ssp. sativus var. atrorubens Alef.).

    Science.gov (United States)

    Smeriglio, A; Denaro, M; Barreca, D; D'Angelo, V; Germanò, M P; Trombetta, D

    2018-01-01

    Black carrot (Daucus carota L. ssp. sativus var. atrorubens Alef.) is a valuable source of carbohydrates, minerals and vitamins and contains also high amounts of anthocyanins giving the characteristic deep-purple color. These latter compounds are known as natural dyes used in the food and pharmaceutical industry that have recently attracted much attention for their healthful properties. The aim of this work was to investigate for the first time the polyphenolic profile and biological properties of a black carrot crude extract (BCCE) through an in-depth analysis of the main polyphenolic classes evaluating its antioxidant, cytoprotective and anti-angiogenic properties. Twenty five polyphenols were quantified by LC-DAD-FLD-MS/MS analysis (anthocyanins 78.06%, phenolic acids 17.89% and other flavonoids 4.06%) with polyglycosylated cyanidins as major components. In addition, BCCE showed a strong antioxidant and free radical scavenging activity particularly in the hydrogen transfer-based assays (ORAC and β-carotene bleaching) and a significant increase in the cell viability. Furthermore, BCCE exhibited a strong anti-angiogenic activity at the highest concentration assayed on the chick chorioallantoic membrane (50μg/egg). In conclusion, the obtained results demonstrated the antioxidant, cytoprotective and anti-angiogenic properties of BCCE, which highlight that the higher biological activity of BCCE is probably due to the synergic effects exerted by various polyphenolic classes. Copyright © 2017 Elsevier B.V. All rights reserved.

  13. Frequent cognitive activity compensates for education differences in episodic memory.

    Science.gov (United States)

    Lachman, Margie E; Agrigoroaei, Stefan; Murphy, Chandra; Tun, Patricia A

    2010-01-01

    To test the hypothesis that frequent participation in cognitive activities can moderate the effects of limited education on cognitive functioning. A national study of adult development and aging, Midlife in the United States, with assessments conducted at the second wave of measurement in 2004-2006. Assessments were made over the telephone (cognitive measures) and in a mail questionnaire (demographic variables, measures of cognitive and physical activity, and self-rated health). A total of 3,343 men and women between the ages of 32 and 84 with a mean age of 55.99 years. The dependent variables were Episodic Memory (Immediate and Delayed Word List Recall) and Executive Functioning (Category Fluency, Backward Digit Span, Backward Counting Speed, Reasoning, and Attention Switching Speed). The independent variables were years of education and frequency of cognitive activity (reading, writing, doing word games or puzzles, and attending lectures). The covariates were age, sex, self-rated health, income, and frequency of physical activity. The two cognitive measures were regressed on education, cognitive activity frequency, and their interaction, while controlling for the covariates. Education and cognitive activity were significantly correlated with both cognitive abilities. The interaction of education and cognitive activity was significant for episodic memory but not for executive functioning. Those with lower education had lower cognitive functioning, but this was qualified by level of cognitive activity. For those with lower education, engaging frequently in cognitive activities showed significant compensatory benefits for episodic memory, which has promise for reducing social disparities in cognitive aging.

  14. Differential effects of black raspberry and strawberry extracts on BaPDE-induced activation of transcription factors and their target genes.

    Science.gov (United States)

    Li, Jingxia; Zhang, Dongyun; Stoner, Gary D; Huang, Chuanshu

    2008-04-01

    The chemopreventive properties of edible berries have been demonstrated both in vitro and in vivo, however, the specific molecular mechanisms underlying their anti-cancer effects are largely unknown. Our previous studies have shown that a methanol extract fraction of freeze-dried black raspberries inhibits benzoapyrene (BaP)-induced transformation of Syrian hamster embryo cells. This fraction also blocks activation of activator protein-1 (AP-1) and nuclear factor kappaB (NF-kappaB) induced by benzoapyrene diol-epoxide (BaPDE) in mouse epidermal JB6 Cl 41 cells. To determine if different berry types exhibit specific mechanisms for their anti-cancer effects, we compared the effects of extract fractions from both black raspberries and strawberries on BaPDE-induced activation of various signaling pathways in Cl 41 cells. Black raspberry fractions inhibited the activation of AP-1, NF-kappaB, and nuclear factor of activated T cells (NFAT) by BaPDE as well as their upstream PI-3K/Akt-p70(S6K) and mitogen-activated protein kinase pathways. In contrast, strawberry fractions inhibited NFAT activation, but did not inhibit the activation of AP-1, NF-kappaB or the PI-3K/Akt-p70(S6K) and mitogen-activated protein kinase pathways. Consistent with the effects on NFAT activation, tumor necrosis factor-alpha (TNF-alpha) induction by BaPDE was blocked by extract fractions of both black raspberries and strawberries, whereas vascular endothelial growth factor (VEGF) expression, which depends on AP-1 activation, was suppressed by black raspberry fractions but not strawberry fractions. These results suggest that black raspberry and strawberry components may target different signaling pathways in exerting their anti-carcinogenic effects. (c) 2007 Wiley-Liss, Inc.

  15. Highly active P25@Pd/C nanocomposite for the degradation of Naphthol Blue Black with visible light

    Science.gov (United States)

    Krishnakumar, Balu; Kumar, Santosh; Gil, João M.; Pandiyan, V.; Aguiar, António; Sobral, Abilio J. F. N.

    2018-02-01

    TiO2-P25 supported Pd/C (P25@Pd/C) composite was prepared by the solid state dispersion method. The prepared composite was characterized by XRD, Raman, PL, SEM and DRS measurements. The photocatalytic activity of the composite was tested towards Naphthol Blue Black (NBB) azo dye degradation under visible light. The photocatalytic activity of P25 was highly influenced by Pd/C. Almost complete degradation was achieved with P25@Pd/C in 120 min, and found to be more efficient when compared with pristine Degussa-P25. The composite was reused in four cycles without loss of activity. A mechanism was proposed for NBB degradation by P25@Pd/C composite under visible light.

  16. Seasonal ovulatory activity exists in tropical Creole female goats and Black Belly ewes subjected to a temperate photoperiod

    Directory of Open Access Journals (Sweden)

    Aumont Gilles

    2004-08-01

    Full Text Available Abstract Background Seasonality of ovulatory activity is observed in European sheep and goat breeds, whereas tropical breeds show almost continuous ovulatory activity. It is not known if these tropical breeds are sensitive or not to temperate photoperiod. This study was therefore designed to determine whether tropical Creole goats and Black-Belly ewes are sensitive to temperate photoperiod. Two groups of adult females in each species, either progeny or directly born from imported embryos, were used and maintained in light-proof rooms under simulated temperate (8 to 16 h of light per day or tropical (11 – 13 h photoperiods. Ovulatory activity was determined by blood progesterone assays for more than two years. The experiment lasted 33 months in goats and 25 months in ewes. Results Marked seasonality of ovulatory activity appeared in the temperate group of Creole female goats. The percentage of female goats experiencing at least one ovulation per month dramatically decreased from May to September for the three years (0%, 27% and 0%, respectively. Tropical female goats demonstrated much less seasonality, as the percentage of goats experiencing at least one ovulation per month never went below 56%. These differences were significant. Both groups of temperate and tropical Black-Belly ewes experienced a marked seasonality in their ovulatory activity, with only a slightly significant difference between groups. The percentage of ewes experiencing at least one ovulation per month dropped dramatically in April and rose again in August (tropical ewes or September (temperate ewes. The percentage of ewes experiencing at least one ovulation per month never went below 8% and 17% (for tropical and temperate ewes respectively during the spring and summer months. Conclusions An important seasonality in ovulatory activity of tropical Creole goats was observed when females were exposed to a simulated temperate photoperiod. An unexpected finding was that Black

  17. Longitudinal Associations between Physical Activity and Educational Outcomes.

    Science.gov (United States)

    Kari, Jaana T; Pehkonen, Jaakko; Hutri-Kähönen, Nina; Raitakari, Olli T; Tammelin, Tuija H

    2017-11-01

    This longitudinal study examined the role of leisure-time physical activity in academic achievement at the end of compulsory basic education and educational attainment in adulthood. The data were drawn from the ongoing longitudinal Cardiovascular Risk in Young Finns Study, which was combined with register-based data from Statistics Finland. The study consisted of children who were 12 yr (n = 1723, 49% boys) and 15 yr (n = 2445, 48% boys) of age at the time when physical activity was measured. The children were followed up until 2010, when their mean age was 40 yr. Physical activity was self-reported and included several measurements: overall leisure-time physical activity outside school hours, participation in sports club training sessions, and participation in sports competitions. Individuals' educational outcomes were measured with the self-reported grade point average at age 15 yr and register-based information on the years of completed postcompulsory education in adulthood. Ordinary least squares models and the instrumental variable approach were used to analyze the relationship between physical activity and educational outcomes. Physical activity in adolescence was positively associated with educational outcomes. Both the physical activity level at age 15 yr and an increase in the physical activity level between the ages of 12 and 15 yr were positively related to the grade point average at age 15 yr and the years of postcompulsory education in adulthood. The results were robust to the inclusion of several individual and family background factors, including health endowments, family income, and parents' education. The results provide evidence that physical activity in adolescence may not only predict academic success during compulsory basic education but also boost educational outcomes later in life.

  18. Longitudinal Associations between Physical Activity and Educational Outcomes

    Science.gov (United States)

    KARI, JAANA T.; PEHKONEN, JAAKKO; HUTRI-KÄHÖNEN, NINA; RAITAKARI, OLLI T.; TAMMELIN, TUIJA H.

    2017-01-01

    ABSTRACT Purpose This longitudinal study examined the role of leisure-time physical activity in academic achievement at the end of compulsory basic education and educational attainment in adulthood. Methods The data were drawn from the ongoing longitudinal Cardiovascular Risk in Young Finns Study, which was combined with register-based data from Statistics Finland. The study consisted of children who were 12 yr (n = 1723, 49% boys) and 15 yr (n = 2445, 48% boys) of age at the time when physical activity was measured. The children were followed up until 2010, when their mean age was 40 yr. Physical activity was self-reported and included several measurements: overall leisure-time physical activity outside school hours, participation in sports club training sessions, and participation in sports competitions. Individuals’ educational outcomes were measured with the self-reported grade point average at age 15 yr and register-based information on the years of completed postcompulsory education in adulthood. Ordinary least squares models and the instrumental variable approach were used to analyze the relationship between physical activity and educational outcomes. Results Physical activity in adolescence was positively associated with educational outcomes. Both the physical activity level at age 15 yr and an increase in the physical activity level between the ages of 12 and 15 yr were positively related to the grade point average at age 15 yr and the years of postcompulsory education in adulthood. The results were robust to the inclusion of several individual and family background factors, including health endowments, family income, and parents’ education. Conclusion The results provide evidence that physical activity in adolescence may not only predict academic success during compulsory basic education but also boost educational outcomes later in life. PMID:29045322

  19. Neutron activation analysis and scanning electron microscopy of phytoplankton in the coastal zone of the Crimea (Black sea)

    International Nuclear Information System (INIS)

    Nekhoroshkov, P.S.; Kravtsova, A.V.; Frontas'eva, M.V.; Tokarev, Yu.N.

    2014-01-01

    For the first time the concentrations of 45 elements in the coastal phytoplankton communities used as bioindicator of inorganic contamination of the Black Sea coastal area near Sevastopol, Ukraine, were determined by means of neutron activation analysis and scanning electron microscopy with energy dispersive spectrometer. Phytoplankton samples were collected by total tows of the plankton net with 35 μm pore size at 3 stations situated in polluted and relatively pristine water areas of the Sevastopol coastal zone during autumn period of the phytoplankton active growth. The concentration of Mg, Al, Sc, Ti, V, Mn, As, Rb, Ba, Th and Fe, Cr increases exponentially from relatively pristine station to more polluted station and 10 and 3 times greater, respectively, in the phytoplankton of the Sevastopol Bay. The rare-earth elements have relatively the same concentration values of about 1 μg/g and tend to accumulate in the phytoplankton from the polluted station in the Sevastopol Bay. The obtained results are in good agreement with the elemental concentration data in the oceanic plankton, plankton communities from the White Sea and the Black Sea. Using energy-dispersive X-ray spectrometry the mineral particles of unknown origin and impurities of copper (0.42% by weight) in the phytoplankton at the polluted station and zinc (0.57% by weight) at the relatively pristine station were determined

  20. Training the Next Generation: Developing Health Education Skills in Undergraduate Public Health Students at a Historically Black College and University

    Directory of Open Access Journals (Sweden)

    Krista Mincey

    2017-10-01

    Full Text Available With the looming workforce crisis, undergraduate public health students could be an important link in filling this demand. As public health continues to face challenges in the future, it is important that the future workforce is not only diverse but also trained in a manner that exposes them to real-world experiences that give them an opportunity to apply coursework to solve problems. This article outlines how a health program planning course was taught at a Historically Black College and University using assignments that promote active learning. Students were assessed on their ability to plan and implement a health activity based on a developed metric. Student and instructor reflections were collected from final assessments of the health programs by both groups. All elements of the course are discussed from course design, structure, assignments, and outcomes along with student and instructor reflections and lessons learned. Results suggest that including assignments focused on active learning are beneficial to helping students learn course material. As public health continues to change, more work needs to focus on teaching pedagogies that better prepare students to address future public health issues.

  1. Incorporating Student Activities into Climate Change Education

    Science.gov (United States)

    Steele, H.; Kelly, K.; Klein, D.; Cadavid, A. C.

    2013-12-01

    Under a NASA grant, Mathematical and Geospatial Pathways to Climate Change Education, students at California State University, Northridge integrated Geographic Information Systems (GIS), remote sensing, satellite data technologies, and climate modelling into the study of global climate change under a Pathway for studying the Mathematics of Climate Change (PMCC). The PMCC, which is an interdisciplinary option within the BS in Applied Mathematical Sciences, consists of courses offered by the departments of Mathematics, Physics, and Geography and is designed to prepare students for careers and Ph.D. programs in technical fields relevant to global climate change. Under this option students are exposed to the science, mathematics, and applications of climate change science through a variety of methods including hands-on experience with computer modeling and image processing software. In the Geography component of the program, ESRI's ArcGIS and ERDAS Imagine mapping, spatial analysis and image processing software were used to explore NASA satellite data to examine the earth's atmosphere, hydrosphere and biosphere in areas that are affected by climate change or affect climate. These technology tools were incorporated into climate change and remote sensing courses to enhance students' knowledge and understanding of climate change through hands-on application of image processing techniques to NASA data. Several sets of exercises were developed with specific learning objectives in mind. These were (1) to increase student understanding of climate change and climate change processes; (2) to develop student skills in understanding, downloading and processing satellite data; (3) to teach remote sensing technology and GIS through applications to climate change; (4) to expose students to climate data and methods they can apply to solve real world problems and incorporate in future research projects. In the Math and Physics components of the course, students learned about

  2. Black Alcoholism.

    Science.gov (United States)

    Watts, Thomas D.; Wright, Roosevelt

    1988-01-01

    Examines some aspects of the problem of alcoholism among Blacks, asserting that Black alcoholism can best be considered in an ecological, environmental, sociocultural, and public health context. Notes need for further research on alcoholism among Blacks and for action to reduce the problem of Black alcoholism. (NB)

  3. Black Culture

    Science.gov (United States)

    Brown, Angela Khristin

    2013-01-01

    The migration of blacks in North America through slavery became united. The population of blacks passed down a tradition of artist through art to native born citizens. The art tradition involved telling stories to each generation in black families. The black culture elevated by tradition created hope to determine their personal freedom to escape…

  4. Affirmative Action Application or Black and White in South Africa Higher Education Institutions: Is it the way forward or not?

    Directory of Open Access Journals (Sweden)

    Christiena Maria van der Bank

    2015-11-01

    Full Text Available We will, demonstrate what affirmative action entails, its origin and the relationship with discrimination and equality. The paper will also highlight the implementation of affirmative action in the Higher Education sector in South Africa.  Affirmative action or black and white are the additional corrective steps which must be taken in order that those who have been historically disadvantage by unfair discrimination before 1994 are able to derive full benefits from an equitable employment environment. While there has been a significant increase in the number of women appointed into management positions, the proportion in relation to the total number of women in senior posts such as those of Vice Chancellors, Deputy-Vice Chancellors and Executive Deans still remains problematic. Considerations should be taken with regard to issues of access, equity and relevance.  Indeed, affirmative action should be located within a rigorous process that will ensure that those who are for example, promoted to senior positions both in private and public sectors are able to demonstrate strategic thinking and action, quality execution of tasks, efficiency and effectiveness in achieving organisational goals.  This will also be followed by a brief South Africa’s case study of different entities (South African Breweries and Sowetan Newspaper.  A comparison of USA’s affirmative action and whether “there is a light at the end of a tunnel – affirmative action” will be done.

  5. Destruction and recreation of black holes

    Science.gov (United States)

    Bell, Peter M.

    Even though the existence of the gravitationally collapsed concentrations of matter in space known as ‘black holes’ is accepted at all educational levels in our society, the basis for the black hole concept is really only the result of approximate calculations done over 40 years ago. The concept of the black hole is an esoteric subject, and recently the mathematical and physical frailties of the concept have come to light in an interesting round of theoretical shuffling. The recent activity in theorizing about black holes began about 10 years ago, when Cambridge University mathematican Stephen Hawking calculated that black holes could become unstable by losing mass and thus ‘evaporate.’ Hawking's results were surprisingly well received, considering the lack of theoretical understanding of the relations between quantum mechanics and relativity. (There is no quantized theory of gravitation, even today.) Nonetheless, his semiclassical calculations implied that the rate of ‘evaporation’ of a black hole would be slower than the rate of degradation of the universe. In fact, based on these and other calculations, the British regard Hawking as ‘the nearest thing we have to a new Einstein’ [New Scientist, Oct. 9, 1980]. Within the last few months, Frank Tipler, provocative mathematical physicist at the University of Texas, has reexamined Hawking's calculations [Physical Review Letters, 45, 941, 1980], concluding, in simple terms, (1) that because of possible vital difficulties in the assumptions, the very concept of black holes could be wrong; (2) that Hawkings' evaporation hypothesis is so efficient that a black hole once created must disappear in less than a second; or (3) that he, Tipler, may be wrong. The latter possibility has been the conclusion of physicist James Bardeen of the University of Washington, who calculated that black hole masses do evaporate but they do so according to Hawking's predicted rate and that Tipler's findings cause only a second

  6. Aeronautics: An Educator's Guide with Activities in Science, Mathematics, and Technology Education.

    Science.gov (United States)

    National Aeronautics and Space Administration, Washington, DC.

    This educator's guide, developed for students in grades 2-4, discusses the field of aeronautics. It begins with education standards and skill matrices for the classroom activities, a description of the National Aeronautics and Space Administration (NASA) aeronautics mission, and a brief history of aeronautics. Activities are written for the…

  7. Segregation or "Thinking Black"?: Community Activism and the Development Of Black-Focused Schools in Toronto and London, 1968-2008

    Science.gov (United States)

    Johnson, Lauri

    2013-01-01

    Background/Context: On January 29, 2008 the Toronto District School Board (TDSB) approved a city-wide Africentric elementary school under their Alternative School policy, sparking a contentious debate. Calls for Black-focused schools also arose in 2008 in London in response to the disengagement of African Caribbean youth. The historical record…

  8. TREAT - Teachers redesigning educational activities with technology

    DEFF Research Database (Denmark)

    Nielsen, Tobias Alsted; Andersen, Mathias Elmose; Alsholm, Anne-Mette

    undervisningssituationer på Aarhus Universitet BSS. TREAT kan anvendes som en selvstændig ressource af den enkelte underviser, eller som en integreret del af Educational IT/blended learning kurser. TREAT tager afsæt i Dee Finks “Integrated Course Design” (2005), som belyser hvordan undervisere kan sammensætte et...... ressourcen i forbindelse med CUL’s blended learning kurser har været positive. Vi oplever derudover en national såvel som international interesse for ressourcen. treat.au.dk Referencer: Biggs, J. & C. Tang (2007): Teaching for Quality Learning at University. Open University Press, McGraw- Hill Education...

  9. IMPROVEMENT OF QUALITY ASSURANCE SYSTEM ACTIVITIES OF HIGHER EDUCATION INSTITUTIONS

    Directory of Open Access Journals (Sweden)

    Z. M. Sultalieva

    2016-01-01

    Full Text Available Abstract. The aim of the article is the improvement of quality assessment system of higher education institutions in the aspect of management. The problems of quality improvement are revealed and classified. The analysis of criteria assessment sets used to define the efficiency of higher education institutions activity is carried out. The components of quality of higher education institutions activity are specified. The structural model of quality assessment system of higher education institutions activity is offered. The analysis of macro environment of a university based on the method of strategic management is carried out, i.e. PEST analysis. As a result of the research a new model of macro criteria model of quality assessment system of higher education institutions, characterizing quality management as an approach to university efficiency is offered, moreover, this system can define the level of its competitiveness in the aspect of quality management. 

  10. UNIVERSITY EDUCATION: EXTRACURRICULAR ACTIVITIES OF STUDENTS IN ACADEMIC SUBJECTS

    Directory of Open Access Journals (Sweden)

    V I Kazarenkov

    2015-12-01

    Full Text Available The article is devoted to a topical problem of university education - the organization of extracurricular activities of students in academic subjects. The materials characterizing the organization of various forms of extracurricular activities in academic subjects and the cooperation of teachers and students in such activities are presented in the article. The forms and methods of joint activity are defined; the features of interaction between teachers and students in extracurricular activities are highlighted.

  11. Youth, physical activity and leisure education: Need for a paradigm ...

    African Journals Online (AJOL)

    The publication of the Surgeon General's Report (1996) on Physical Activity and Health by the U.S. Department of Health and Human Services recommended a paradigm shift during the 21st Century from prescribing exercise for fitness, to promoting physical activity and leisure education as an active approach to good ...

  12. Jegi-Chagi: A Traditional Korean Physical Education Activity

    Science.gov (United States)

    Cho, Kibum; Kim, Minhyun; Lee, Heesu

    2017-01-01

    Physical education programs should provide a wide range of physical activities. However, several limitations, such as insufficient space and equipment, make it challenging to incorporate variety into the curriculum. Jegi-chagi, a traditional Korean physical activity, has been proven to be a cost-effective, safe and healthy activity for students.…

  13. Writing Activities: A Primer for Outdoor Educators. ERIC Digest.

    Science.gov (United States)

    Brew, Alan

    In outdoor education, reflection transforms experience into knowledge. Writing activities facilitate reflection. In designing writing activities, instructors should ask themselves why they are asking their students to write, what type of writing is appropriate for their purpose, when and in what context the activity should take place, how they…

  14. Teacher's Psycho-Diagnostic Activities in School Educational System

    Science.gov (United States)

    Minakhmetova, Albina Z.; Pyanova, Ekaterina N.; Akhmetshina, Enze M.

    2016-01-01

    The urgency of the problem stated in the article stems from the fact that in modern conditions the study of the psycho-diagnostic component of the teacher's activities is relevant in practical terms, since the functions of these activities affect the efficiency of pedagogical activity and the educational process itself, including the effectiveness…

  15. Physical extracurricular activities in educational child-robot interaction

    NARCIS (Netherlands)

    Davison, Daniel Patrick; Schindler, Louisa; Reidsma, Dennis; Dautenhahn, K.; Baxter, P.; Weiss, A.; Salem, A.

    In an exploratory study on educational child-robot interaction we investigate the effect of alternating a learning activity with an additional shared activity. Our aim is to enhance and enrich the relationship between child and robot by introducing ``physical extracurricular activities''. This

  16. Social Consciousness, Education and Transformative Activity

    Science.gov (United States)

    Pavlidis, Periklis

    2015-01-01

    This paper examines two aspects of social consciousness: consciousness in the sense of knowledge of the objective reality and consciousness in the sense of awareness of oneself as a subject in his/her social ties with other persons-subjects. In the light of such an approach to consciousness in this essay we discuss the importance of education and…

  17. Carbon black nanoparticles promote endothelial activation and lipid accumulation in macrophages independently of intracellular ROS production

    DEFF Research Database (Denmark)

    Cao, Yi; Roursgaard, Martin; Danielsen, Pernille Høgh

    2014-01-01

    black (CB) exposure in cultured human umbilical vein endothelial cells (HUVECs), THP-1 (monocytes) and THP-1 derived macrophages (THP-1a). The proliferation of HUVECs or co-cultures of HUVECs and THP-1 cells were unaffected by CB exposure, whereas there was increased cytotoxicity, assessed by the LDH...... and WST-1 assays, especially in THP-1 and THP-1a cells. The CB exposure decreased the glutathione (GSH) content in THP-1 and THP-1a cells, whereas GSH was increased in HUVECs. The reactive oxygen species (ROS) production was increased in all cell types after CB exposure. A reduction of the intracellular...... GSH concentration by buthionine sulfoximine (BSO) pre-treatment further increased the CB-induced ROS production in THP-1 cells and HUVECs. The expression of adhesion molecules ICAM-1 and VCAM-1, but not adhesion of THP-1 to HUVECs or culture dishes, was elevated by CB exposure, whereas these effects...

  18. Hashtag Activism and Why #BlackLivesMatter In (and To the Classroom

    Directory of Open Access Journals (Sweden)

    Prudence Cumberbatch

    2016-11-01

    Full Text Available This paper considers #blacklivesmatter an important part of current discussions of race and social justice. It explores the ways in which Twitter users (and students are developing a globally-connected voice to not only build awareness and solidarity, but also challenge the framing of issues relating to #blacklivesmatter and the ways blacks are represented by a variety of political actors, including the mainstream media. The paper identifies two trends in teaching #blacklivesmatter and its relevance to the classroom: historicizing the “new” civil rights movement and the use of testimony and discussion as a new praxis. The authors conclude that students must be reminded of their ability to influence their own lives by using their personal stories and seizing their voice.

  19. Global activism: new paths for Black people movement collective action in Colombia

    Directory of Open Access Journals (Sweden)

    Adriana Espinosa Bonilla

    2011-07-01

    Full Text Available This paper examines the transformations in actor-network collective action in the Process of Black Communities —pcn—, which were developed as a consequence of the armed conflict worsening in the Pacific region —specifically on the collective lands in the municipalities of Buenaventura and Suárez (Southwestern Colombia— in the last ten years. Information was gathered through semi-structured interviews, observation records, analysis of audio/text documents on the organizations’ claims and communiqués, and the drafting of aggregated data on displacement and conflictual facts in the region. Findings show a significant up surging of conflict within the period, in the face of which PCN’s coalitions with local and global actors have come both to neutralize and make visible armed actors’ actions against populations, and to reorient collective action, introducing innovations in the repertoires of action and setting new goals for this actor-network in the region.

  20. Basic Education and Policy Support Activity: Tools and Publications.

    Science.gov (United States)

    Creative Associates International, Inc., Washington, DC.

    The Basic Education and Policy Support (BEPS) Activity is a United States Agency for International Development (USAID)-sponsored, multi-year initiative designed to further improve the quality of, effectiveness of, and access to formal and nonformal basic education. This catalog is one element of the BEPS information dissemination process. The…

  1. 44 CFR 19.400 - Education programs or activities.

    Science.gov (United States)

    2010-10-01

    ... educational institution may administer or assist in the administration of scholarships, fellowships, or other... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Education programs or activities. 19.400 Section 19.400 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT AGENCY...

  2. 41 CFR 101-4.400 - Education programs or activities.

    Science.gov (United States)

    2010-07-01

    ... educational institution that administers or assists in the administration of such scholarships, fellowships... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Education programs or activities. 101-4.400 Section 101-4.400 Public Contracts and Property Management Federal Property Management...

  3. 10 CFR 5.400 - Education programs or activities.

    Science.gov (United States)

    2010-01-01

    ... Energy NUCLEAR REGULATORY COMMISSION NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Discrimination on the Basis of Sex in Education Programs or... other sex. Such opportunities may be derived from either domestic or foreign sources. (d) Aids, benefits...

  4. Media Literacy Art Education: Logos, Culture Jamming, and Activism

    Science.gov (United States)

    Chung, Sheng Kuan; Kirby, Michael S.

    2009-01-01

    Critical media literacy art education teaches students to: (1) appreciate the aesthetic qualities of media; (2) critically negotiate meanings and analyze media culture as products of social struggle; and (3) use media technologies as instruments of creative expression and social activism. In concert with art education practices oriented toward…

  5. Research and Practice of Active Learning in Engineering Education

    NARCIS (Netherlands)

    Graaf, de Erik; Saunders-Smits, Gillian; Nieweg, Michael

    2005-01-01

    Since 2001, the international network Active Learning in Engineering education (ALE) organized a series of international workshops on innovation of engineering education. The papers in this book are selected to reflect the state of the art, based on contributions to the 2005 ALE workshop in Holland.

  6. Implementation of ICT in Higher Education as Interacting Activity Systems

    DEFF Research Database (Denmark)

    Nyvang, Tom

    2006-01-01

    Implementation of ICT in higher education is not a trivial process. It is however a process leading to a number of challenges and problems. The paper develops a theoretical model of the implementation of ICT in higher education based on activity theory and on a case study in a Danish university. ...

  7. South African Curriculum Reform: Education for Active Citizenship

    Science.gov (United States)

    Smith, Juliana; Arendse, Agnetha

    2016-01-01

    The changing societal context in South Africa (SA) has necessitated curriculum reform to deal with the challenges of education, from apartheid to democracy, with the aim of promoting active citizenship education. The aim of the paper is thus to illuminate to what extent the Grade 11 Life Orientation (LO) curriculum prepares learners for active…

  8. Challenge Activities for the Physical Education Classroom: Considerations

    Science.gov (United States)

    McKenzie, Emily; Tapps, Tyler; Fink, Kevin; Symonds, Matthew L.

    2018-01-01

    The purpose of this article is to provide physical education teachers with the tools to develop and implement challenge course-like activities in their physical education classes. The article also covers environmental considerations for teachers who have the desire to create a challenge-based classroom setting in order to reach a wider and more…

  9. Is Communications a Strategic Activity in UK Education?

    Science.gov (United States)

    Chapleo, Chris

    2006-01-01

    This qualitative exploratory paper investigates whether communications/public relations is regarded by opinion formers in UK education as a strategic business activity or a tactical marketing tool. It is based upon depth interviews with 16 senior managers with strategic roles in UK higher or further education, or Government bodies, conducted…

  10. Comparative potential of black tea leaves waste to granular activated carbon in adsorption of endocrine disrupting compounds from aqueous solution

    Directory of Open Access Journals (Sweden)

    A.O. Ifelebuegu

    2015-07-01

    Full Text Available The adsorption properties and mechanics of selected endocrine disrupting compounds; 17 β-estradiol, 17 α – ethinylestradiol and bisphenol A on locally available black tea leaves waste and granular activated carbon were investigated. The results obtained indicated that the kinetics of adsorption were pH, adsorbent dose, contact time and temperature dependent with equilibrium being reached at 20 to 40 minutes for tea leaves waste and 40 to 60 minutes for granular activated compound. Maximum adsorption capacities of 3.46, 2.44 and 18.35 mg/g were achieved for tea leaves waste compared to granular activated compound capacities of 4.01, 2.97 and 16.26 mg/g for 17 β- estradiol, 17 α-ethinylestradiol and bisphenol A respectively. Tea leaves waste adsorption followed pseudo-first order kinetics while granular activated compound fitted better to the pseudo-second order kinetic model. The experimental isotherm data for both tea leaves waste and granular activated compound showed a good fit to the Langmuir, Freundlich and Temkin isotherm models with the Langmuir model showing the best fit. The thermodynamic and kinetic data for the adsorption indicated that the adsorption process for tea leaves waste was predominantly by physical adsorption while the granular activated compound adsorption was more chemical in nature. The results have demonstrated the potential of waste tea leaves for the adsorptive removal of endocrine disrupting compounds from water.

  11. Serial transrectal ultrasonography for monitoring the reproductive activity of the Asiatic black bear (Ursus thibetanus ussuricus).

    Science.gov (United States)

    Kang, H G; Jeong, D H; Yang, J J; Lee, B K; Kong, J K; Lee, J W; Kim, I H

    2015-02-01

    This study evaluated the structural changes in the reproductive tract of Asiatic black bears using serial transrectal ultrasonography. In addition, the ultrasonographic observations were compared with the results of vaginal cytology and hormonal analyses. The collection of blood for hormonal analysis, vaginal cytology and transrectal ultrasonography was performed in two bears (Bears 1 and 2) from June 2011 to August 2013 without mating and in a third bear (Bear 3) from April to December 2012, allowing natural mating. Serial ultrasonographic observations showed cyclic changes in ovarian structures (e.g. emergence of small follicles, growth and ovulation of dominant follicles and corpus luteum (CL) formation) during the reproductive cycles of the three bears. The diameter of the uterine horns remained similar throughout the reproductive cycle in Bears 1 and 2, and it remained similar from April until October, but an enlargement containing foetuses was observed in Bear 3 in December. The ultrasonographic observations were consistent with the data obtained through vaginal cytology and progesterone analysis during the reproductive cycle. An average of 4.0 (±0.4) dominant follicles was observed during the oestrous stage (May-August), during which the superficial cells accounted for >90% of the total vaginal cells. In addition, the detection of an average of 2.6 (±0.2) CL was associated with increased plasma progesterone concentrations (3.0 ± 0.4 ng/ml) between June and December (near hibernation). In conclusion, serial transrectal ultrasonography demonstrated yearly oestrous (ovulation) cycles via follicular dynamics and CL formation on ovaries, accordingly with vaginal cytology and hormonal level in the Asiatic black bear. © 2014 Blackwell Verlag GmbH.

  12. IMPROVEMENT OF EDUCATIONAL COGNITIVE ACTIVITY STUDENTS IN THE PROFESSIONAL EDUCATIONAL ORGANIZATION ON THE BASIS OF VISUALIZATION TECHNOLOGY OF EDUCATIONAL INFORMATION

    Directory of Open Access Journals (Sweden)

    Liliya A. Kolmakova

    2015-01-01

    Full Text Available The aim of the study is to consider the problem of improving the quality of education in the professional educational organizations.Methods. The scientific and pedagogical analyses of the concepts forming a terminological field of a problem are used. The system, competence-based and personal approaches are used for development of models of cognitive visualization. Questioning of students was carried out to establish the level of development of their informative activity.Results. The constituent parts of the modern educational process and the need to create specific conditions for its implementation are identified and described. The author gives a generalized characteristic of visualization technology of educational information. The application of cognitive visualization models using information and communication technologies are proved. The results showing the evolution of motivational indicators of students’ activity before and after application of LSM and the «Metaplan» in the educational process are presented.Scientific novelty. The pedagogical conditions that allow using information and communication technologies as means of the trainees’ educational informative activity improvement in the professional educational organization are defined. Features of the directed application of methods of cognitive visualization of educational information, both for improvement of educational cognitive activity, and for formation of professional competences of students by profession «A chef, a confectioner» are noted.Practical importance. Use of methods of cognitive visualization in educational process on the example of studying of Chemistry and Biology in the professional educational organization is considered in details. The teaching package providing application of methods of cognitive visualization of educational information for the purpose of improvement of educational cognitive activity of students in the professional educational organization

  13. A comparative study of the antioxidant scavenging activity of green tea, black tea and coffee extracts: a kinetic approach.

    Science.gov (United States)

    Anissi, Jaouad; El Hassouni, Mohammed; Ouardaoui, Abdelkrim; Sendide, Khalid

    2014-05-01

    The antioxidant activities of three beverages, coffee, black tea and green tea, along with their major components, were investigated in terms of their reaction with the stable radical 2,2'-diphenyl-2-picrylhydrazyl (DPPH). We used a kinetic approach in parallel with quantification methods based on a fixed end-point to determine the scavenging efficiency of compounds abundant in these beverages during their reaction with DPPH using a stopped-flow spectrophotometer-based method. Ascorbic acid, (+)-catechin, (-)-epigallocatechin, tannic acid, and caffeic acid were selected as model antioxidants to study in coffee, black tea and green tea. We applied a second-order model to demonstrate similarities in the kinetics behavior of beverages and related compounds. Our findings showed the slopes k2(')((mol/L)(-1)s(-1)) and k2max(')((mol/L)(1)s(-1)) exhibited similar and correlated values; we suggest the variation in k2(') as a function of time is more informative about antioxidant properties than reaction with DPPH alone. We also used IC100 to test the reliability of the relative stoichiometry using a new comparative parameter "n", which was calculated as: n=c0DPPHIC100 (mol/L(mol/L)(-1), (mol/L)mlmg(-1) or molg(-1)). Copyright © 2013 Elsevier Ltd. All rights reserved.

  14. Suburban Black Lives Matter

    Science.gov (United States)

    Lewis-McCoy, R. L'Heureux

    2018-01-01

    This article explores the range of experiences and meanings of Black life in suburban space. Drawing from educational, historical, and sociological literatures, I argue that an underconsideration of suburban space has left many portraits of educational inequality incomplete. The article outlines the emergence of American suburbs and the formation…

  15. Notification: Review on the Effectiveness of EPA's Environmental Education Activities

    Science.gov (United States)

    Project #OPE-FY15-0050, October 16, 2014. The U.S. Environmental Protection Agency (EPA) Office of Inspector General (OIG) plans to begin preliminary research on the effectiveness of the EPA's Environmental Education activities.

  16. Recent Activities and programs of nuclear engineering education in Japan

    International Nuclear Information System (INIS)

    Oka, Yoshiaki

    2009-01-01

    Nuclear power should take important role for protecting global environment and securing energy supply. Raising excellent human resources is critical for meeting the challenge. This paper describes recent activities and programs of nuclear engineering education and governmental support in Japan

  17. Challenges in Trade Union Education: A Case for Active Learning.

    Science.gov (United States)

    Doyle, Mel

    1992-01-01

    Because labor unions are voluntary, democratic, collective organizations, labor education is better delivered through active participative learning methods, built on participant knowledge, with the teacher as facilitator of the process. (SK)

  18. Activity-Based Costing Systems for Higher Education.

    Science.gov (United States)

    Day, Dennis H.

    1993-01-01

    Examines traditional costing models utilized in higher education and pinpoints shortcomings related to proper identification of costs. Describes activity-based costing systems as a superior alternative for cost identification, measurement, and allocation. (MLF)

  19. Permanent education in healthcare services: educational activities developed in the state of Minas Gerais, Brazil.

    Science.gov (United States)

    Sena, Roseni Rosângela de; Grillo, Maria José Cabral; Pereira, Lizziane d'Ávila; Belga, Stephanie Marques Moura Franco; França, Bruna Dias; Freitas, Camila Poliana de

    2017-07-06

    To analyse educational activities carried out in the state of Minas Gerais, Brazil, considered permanent education in healthcare. This is a mixed methods study with a qualitative approach and the participation of 492 municipal health departments. Data were collected in March and October 2014 through interviews available online. The data were tabulated using Excel software. The data were subjected to thematic content analysis and statistic descriptive analysis. The study was approved with opinion 22830812.5.0000.5149. Data analysis revealed the following nine categories: type of practice, theme, method, technological resource, motive, healthcare level, public, financing, and status of the described practice. The activities were not related to a specific educational concept. The researchers found that the subjects that motivated the education activities were based on work and the diagnosis of problems faced by the workers. These principles are characteristic of permanent education in healthcare. In some municipalities, permanent education is being incorporated into the healthcare service routine.

  20. Political Education. The Global Education of Citizen through Active Citizenship

    Directory of Open Access Journals (Sweden)

    Edi Puka

    2014-04-01

    Full Text Available The human being grows in relationship with others of its fellows, and it is by virtue of this relationship that it receives a particular cultural heritage and acquires its own identity, differentiating itself, finding its own space of freedom and autonomy allowing it to interact and extend its own network of relations. In such a dynamic of reciprocity, the man realizes himself as such as a conscious member of a “social body”, i.e. of a radical society in an organic human context, which has become nowadays a clearly planetary one, by virtue of the unpublished migration flows and obvious interdependence of the Planet. The education is a line of human civility and it causes that grounds of anonymity, fears, consumerism, prejudice, haste, indifference, abuse, insecurity, solitude, become grounds of hospitality, trust, sharing, security, friendship, and brotherhood. The patterns of political education having prevailed so far are: the academic model with its explanation and dissent in the abstract of a great deal of knowledge, and that of the laboratory, which tilts and leans over, even by moments of simulation, toward vital worlds of operational policy. It is now manifested a widespread social demand about the necessity to provide to everybody, but especially in the range of basic youth socio-political information, an equipment of historical and values’ nature, and by providing comparative elements on the different socio-political matrices and traditions, raising the incentive at a renewing and increasingly conscious commitment in the face of growing difficulties, inherent to the political perspectives disputed so far in the world. It is necessary to refocus and reestablish a political culture uniting the breath of the ideal with the reality of administrative experience, supporting this political culture with the contribution of a dynamic and open reflection, capable of understanding the reality.

  1. The Role of Extracurricular Activities in Active Citizenship Education

    Science.gov (United States)

    Keser, Filiz; Akar, Hanife; Yildirim, Ali

    2011-01-01

    There have been multiple trends of building democratic citizens through formal education, and in the European context the trials have been dramatically increased with the Europeanization process since the 1980s. In line with this trend, an in-depth qualitative case study was carried out in a private primary school in Turkey to shed light on the…

  2. Determination of contents and antioxidant activity of free and bound phenolics compounds and in vitro digestibility of commercial black and red rice (Oryza sativa L.) varieties.

    Science.gov (United States)

    Sumczynski, Daniela; Kotásková, Eva; Družbíková, Helena; Mlček, Jiří

    2016-11-15

    Black and red rices (Oryza sativa L.) were analysed for total flavonoids and phenolics and the HPLC profile including both free and bound phenolic fractions. Moreover, antioxidant activity and in vitro digestibility was determined. Content of flavonoids and polyphenols as well as antioxidant activity was higher in free phenolic fractions. Bound flavonoids in black rices were not significant contributors to antioxidant activity. The main free phenolics in black rices were ferulic, protocatechuic and trans-p-coumaric acids, while the major free phenolics in red rices were catechin, protocatechuic and caffeic acids. The main bound phenolics in black rices were ferulic and vanillic acids and quercetin, in red rice types, they were ferulic, syringic, trans-p-coumaric acids and quercetin. Newly, the presence of m-coumaric acid in red rices was detected. Steam cooked rices showed very high levels of organic matter digestibility, whereas red rices were significantly more digestible than black rices (p<0.05). Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. Influence of tebuconazole and copper hydroxide on phosphatase and urease activities in red sandy loam and black clay soils.

    Science.gov (United States)

    Anuradha, B; Rekhapadmini, A; Rangaswamy, V

    2016-06-01

    The efficacy of two selected fungicides i.e., tebuconazole and coppoer hydroxide, was conducted experiments in laboratory and copper hydroxide on the two specific enzymes phosphatase and urease were determined in two different soil samples (red sandy loam and black clay soils) of groundnut (Arachis hypogaea L.) from cultivated fields of Anantapuramu District, Andhra Pradesh. The activities of the selected soil enzymes were determined by incubating the selected fungicides-treated (1.0, 2.5, 5.0, 7.5 and 10.0 kg ha -1 ) and -untreated groundnut soil samples at 10 day intervals. By determining the effective concentration, the rate of selected enzyme activity was estimated by adding the suitable substrate at 10, 20, 30 and 40 days of soil incubation. Both the enzyme activities were increased up to 5.0 kg ha -1 level of fungicide in both soil samples significantly at 10 days of soil incubation and further enhanced up to 20 days of incubation. The activity of the phosphatase and urease decreased progressively at 30 and 40 days of incubation. From overall studies, higher concentrations (7.5 and 10.0 kg ha -1 ) of both tebuconazole and copper hydroxide were toxic to phosphatase and urease activities, respectively, in both soil samples.

  4. Disrupting Educational Inequalities through Youth Digital Activism

    Science.gov (United States)

    Stornaiuolo, Amy; Thomas, Ebony Elizabeth

    2017-01-01

    This article reviews scholarship on youth and young adult activism in digital spaces, as young users of participatory media sites are engaging in political, civic, social, or cultural action and advocacy online to create social change. The authors argue that youth's digital activism serves as a central mechanism to disrupt inequality, and that…

  5. A Hybrid Activity System as Educational Innovation

    Science.gov (United States)

    Yamazumi, Katsuhiro

    2008-01-01

    This article analyzes a hybrid after-school learning activity for children called "New School" (NS). NS is an inter-institutional, collaborative project based on a partnership between a university and local elementary schools that also involves other social actors and institutions. Using a framework of third generation activity theory, the article…

  6. Soil acid phosphomonoesterase activity and phosphorus forms in ancient and post-agricultural black alder [Alnus glutinosa (L. Gaertn.] woodlands

    Directory of Open Access Journals (Sweden)

    Anna Orczewska

    2012-06-01

    Full Text Available Black alder, an N-fixing tree is considered to accelerate the availability of phosphorus in soils due to the increased production of phosphatase enzymes, which are responsible for the P release from the litter. Acid phosphatase activity plays a pivotal role in organic P mineralization in forest soils and in making P available to plants. In order to check whether Alnus glutinosa stimulates acid phosphomonoesterase (PHACID activity, we compared enzyme activities, total P concentration (PTOT, plant-available P (PAVAIL, organic P (PORG and inorganic P (PINORG, and organic matter content in 27 ancient and 27 post-agricultural alder woods (the latter ones representing different age classes: 11-20, 21-40 and 41-60 years of soil samples taken from the litter and the mineral layers. Phosphomonoesterase activity, organic matter, PTOT, PINORG and PORG concentrations were significantly higher in ancient alder woods than in the soils of post-agricultural forests. Significant differences in the acid phosphatase activity, organic matter and PAVAIL concentration were noted between the litter and mineral layers within the same forest type. In recent stands the amount of organic matter and phosphatase activity increased significantly with the age of alder stands, although only in the mineral layer of their soils. Phosphomonoesterase activity, organic matter and PAVAIL content were higher in a litter layer and decreased significantly at a mineral depth of the soil. The acid phosphatase activity was significantly correlated with organic matter content in both ancient and recent stands. There was no significant relationship between PHACID activity and any P forms.

  7. Business oriented educational experiments enhance active learning by engineering students

    DEFF Research Database (Denmark)

    Christiansen, Nynne Mia; Schjær-Jacobsen, Hans; Simon, Jens

    2012-01-01

    exploration symposium on bridging the gap between engineering education and business is proposed on the basis of the Copenhagen University College of Engineering (IHK) being involved in a DKK 50m ongoing project “Business Oriented Educational Experiments” financed by the Capital Region of Denmark...... and the European Social Fund. The project is carried out with other major educational institutions in the Copenhagen area and organized in five themes: 1) world class competences, 2) new interactions between education and business, 3) the experimenting organization, 4) education on demand, and 5) new career paths...... benefits from the CIE activities: Businesses execute innovative solutions, students practice active learning and build a platform for their future professional career, and professors leave the classrooms and get an opportunity to reality check their theories. CIE is operating on a network platform made up...

  8. Understanding the value added to clinical care by educational activities. Value of Education Research Group.

    Science.gov (United States)

    Ogrinc, G S; Headrick, L A; Boex, J R

    1999-10-01

    In an era of competition in health care delivery, those who pay for care are interested in supporting primarily those activities that add value to the clinical enterprise. The authors report on their 1998 project to develop a conceptual model for assessing the value added to clinical care by educational activities. Through interviews, nine key stakeholders in patient care identified five ways in which education might add value to clinical care: education can foster higher-quality care, improve work satisfaction of clinicians, have trainees provide direct clinical services, improve recruitment and retention of clinicians, and contribute to the future of health care. With this as a base, an expert panel of 13 clinical educators and investigators defined six perspectives from which the value of education in clinical care might be studied: the perspectives of health-care-oriented organizations, clinician-teachers, patients, education organizations, learners, and the community. The panel adapted an existing model to create the "Education Compass" to portray education's effects on clinical care, and developed a new set of definitions and research questions for each of the four major aspects of the model (clinical, functional, satisfaction, and cost). Working groups next drafted proposals to address empirically those questions, which were critiqued at a national conference on the topic of education's value in clinical care. The next step is to use the methods developed in this project to empirically assess the value added by educational activities to clinical care.

  9. Activity and sign grounding mathematics education

    CERN Document Server

    Hoffmann, Michael HG; Seeger, Falk

    2005-01-01

    The advancement of a scientific discipline depends not only on the ""big heroes"" of a discipline, but also on a community's ability to reflect on what has been done in the past and what should be done in the future. This volume combines perspectives on both. It celebrates the merits of Michael Otte as one of the most important founding fathers of mathematics education by bringing together all the new and fascinating perspectives created through his career as a bridge builder in the field of interdisciplinary research and cooperation. The perspectives elaborated here are for the greatest part

  10. Black Hole Masses for Type I Active Galactic Nuclei in the Chandra Cosmos Legacy Survey

    Science.gov (United States)

    Nagaraj, Gautam; Fornasini, Francesca; Civano, Francesca Maria

    2018-01-01

    Tight local relations between SMBH masses and galaxy properties have established the fundamental connection between SMBHs and their host galaxies. However, in order to better understand the coevolution of SMBHs and their host galaxies over cosmic time, we need measurements of black hole masses, AGN luminosities, and galaxy stellar masses from sizable samples of AGN covering lower luminosities than the brightest quasars spanning a wide redshift range. In this study, we report masses of the SMBHs of 224 Type I AGNs from the Chandra COSMOS Legacy Survey as determined by the line widths of Mg II 2798, Hb 4862, and Ha 6564 via scaling relations derived from reverberation mapping. Preliminary comparison with host galaxy luminosities and stellar masses suggests an increase in Eddington ratio with redshift, consistent with previous studies. In addition, our derived SMBH masses fall above the local AGN MBH--M* (galactic stellar mass) relation from Reines & Volonteri (2015), but it is still not clear whether this results from redshift evolution of the MBH--M* relation or from the incompleteness of the spectroscopic surveys available. The SAO REU program is funded by the National Science Foundation REU and Department of Defense ASSURE programs under NSF Grant AST-1659473, and by the Smithsonian Institution.

  11. Galaxies in turmoil the active and starburst galaxies and the black holes that drive them

    CERN Document Server

    Kitchin, C R

    2007-01-01

    Aimed at active amateur astronomers this book provides an up-to-date account of active galaxies. Lists and images of such objects are an important component of this book. The book makes sense of the chaotic and apparently innumerable types of violently active galaxies.

  12. The Application of Crowd Sourcing in Educational Activities

    Directory of Open Access Journals (Sweden)

    Monika Skaržauskaitė

    2013-01-01

    Full Text Available Purpose—This paper analyses the role of crowdsourcing use in educational activities. In recent decades, the rapid growth of innovative Internet-based information and communication technologies created a new field of opportunities for educational organizations to reach their goals. Crowdsourcing, as defined by Jeff Howe (2006, is the act of taking a job traditionally performed by a designated employee and outsourcing it to an undefined, generally large group of people in the form of an open call. The newness of the term indicates that there is not significant literature on the subject of how this operating method is utilized in educational activities. The objective of this paper therefore is to take an exploratory look at how educational organizations are using crowdsourcing as part of their activities at the present time, and to suggest how the practice of crowdsourcing may spread to other educational activities as time goes on. Design/methodology/approach—The paper presents a conceptual model of crowdsourcing application in educational activities. The model is supported by analysis and synthesis of scientific literature and case studies. Findings—Analysis of literature and case studies allowed the creation of a conceptual model which shows the use of crowdsourcing in educational and supporting tasks of organizations. This tool will be helpful for future research on the subject, since it provides a framework of the analysis. Research limitations/implications—The model presented here is a conceptual model and needs to be validated empirically. Practical implications—For practical purposes, the variables proposed in the model would provide a more comprehensive framework for the assessment of crowdsourcing use in education activities and work as a guide for crowdsourcing strategies. Originality/Value—Although the relevant literature consists of many partial and indirect insights and indications in the direction as conceived by the model

  13. Chemopreventive activity of ellagitannins and their derivatives from black raspberry seeds on HT-29 colon cancer cells.

    Science.gov (United States)

    Cho, Hyunnho; Jung, Hana; Lee, Heejae; Yi, Hae Chang; Kwak, Ho-kyung; Hwang, Keum Taek

    2015-05-01

    Black raspberry (BRB) seeds are a major waste product after fruit processing. The seeds are abundant in ellagitannins (ET), a class of hydrolysable tannins, which are hydrolyzed to ellagic acid (EA) and further metabolized to urolithin A (UA) and urolithin B (UB), known to be bioavailable in the colon and the prostate. In this study, the anti-cancer activities of these compounds were evaluated on HT-29 colon cancer cells. ET, EA, UA and UB inhibited the proliferation of the cancer cells. EA caused a slight, but significant cell cycle arrest at the G1 phase, and urolithins caused cell cycle arrest at the G2/M phase and upregulated p21 expression. Apoptotic cells were detected by Annexin V-FITC/PI assay when treated with the compounds. Disruption in mitochondrial membrane potential and activation of caspases 8 and 9 suggest that both extrinsic and intrinsic apoptotic pathways may be involved. Activation of caspase 3 and cleavage of PARP further confirmed the induction of the apoptosis. ET, EA, UA and UB showed anti-cancer activity by arresting the cell cycle and inducing apoptosis on HT-29 human colon cancer cells. This study suggests that the BRB seeds could be a potential source of anti-cancer ET.

  14. A Sprinkle of Pepper: The State of Black Influence in White Colleges and Universities

    Science.gov (United States)

    Hale, Frank W., Jr.

    1975-01-01

    The influence of Blacks in white institutions of higher education is no more than a sprinkling of pepper. The article discusses some problems facing the Black students, Black faculty and Black administrators at these schools. (Author/HMV)

  15. Active Learning in Engineering Education: a (re)introduction

    DEFF Research Database (Denmark)

    Lima, Rui M.; Andersson, Pernille Hammar; Saalman, Elisabeth

    2017-01-01

    are centred on the vision that learners construct their knowledge based on meaningful activities and knowledge. In 2014, the steering committee of the ALE network reinforced the need to discuss the meaning of Active Learning and that was the base for this proposal for a special issue. More than 40 submissions......The informal network ‘Active Learning in Engineering Education’ (ALE) has been promoting Active Learning since 2001. ALE creates opportunity for practitioners and researchers of engineering education to collaboratively learn how to foster learning of engineering students. The activities in ALE...... were reviewed by the European Journal of Engineering Education community and this theme issue ended up with eight contributions, which are different both in their research and Active Learning approaches. These different Active Learning approaches are aligned with the different approaches that can...

  16. 50 CFR 600.745 - Scientific research activity, exempted fishing, and exempted educational activity.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 8 2010-10-01 2010-10-01 false Scientific research activity, exempted...-STEVENS ACT PROVISIONS General Provisions for Domestic Fisheries § 600.745 Scientific research activity, exempted fishing, and exempted educational activity. (a) Scientific research activity. Nothing in this part...

  17. Disc Activities in Physical Education: A Comprehensive Approach

    Science.gov (United States)

    Cramer, Stanley J.

    2017-01-01

    Nearly everyone who throws a disc associates the activity with fun. Over the years, multiple disc games and activities have been invented, combining fun and learning. These are games that many individuals are likely to continue playing long after they have left school and are worthy of being included in a contemporary physical education program.…

  18. Development of educational program for neutron activation analysis

    International Nuclear Information System (INIS)

    Chung, Yong Sam; Moon, Jong Hwa; Kim, Sun Ha; Ryel, Sung; Kang, Young Hwan; Lee, Kil Yong; Yeon, Yeon Yel; Cho, Seung Yeon

    2000-08-01

    This technical report is developed to apply an educational and training program for graduate student and analyst utilizing neutron activation analysis. The contents of guide book consists of five parts as follows; introduction, gamma-ray spectrometry and measurement statistics, its applications, to understand of comprehensive methodology and to utilize a relevant knowledge and information on neutron activation analysis

  19. Rethinking Active Learning in the Context of Japanese Higher Education

    Science.gov (United States)

    Ito, Hiroshi

    2017-01-01

    This paper reconsiders active learning (AL) in the context of Japanese higher education. AL encourages students to actively engage with learning, enhancing their generic and employability skills. In Japan, AL has become increasingly popular but lacks a clear definition. AL proponents suggest that it is the use of instructional methods that…

  20. Radiation Education Activities | RadTown USA | | US EPA

    Science.gov (United States)

    2018-03-12

    EPA's Radiation Education Activities are designed to help increase awareness and understanding of radiation concepts among middle and high school students. The activities introduce basic concepts of radiation, non-ionizing and ionizing radiation, radiation protection, radioactive atoms and radioactive decay.

  1. Agricultural Education Science Activity--Nos. AS 1-4.

    Science.gov (United States)

    Ohio State Univ., Columbus. Agricultural Curriculum Materials Service.

    This packet contains four science learning activities on the subject of animal science that can be used in agricultural education courses. The activities cover these topics: (1) identifying internal parasites in domestic livestock; (2) the effect of feed preparation on feed palatability and consumption; (3) determining the absorption abilities of…

  2. Development of educational program for neutron activation analysis

    Energy Technology Data Exchange (ETDEWEB)

    Chung, Yong Sam; Moon, Jong Hwa; Kim, Sun Ha; Ryel, Sung; Kang, Young Hwan; Lee, Kil Yong; Yeon, Yeon Yel; Cho, Seung Yeon

    2000-08-01

    This technical report is developed to apply an educational and training program for graduate student and analyst utilizing neutron activation analysis. The contents of guide book consists of five parts as follows; introduction, gamma-ray spectrometry and measurement statistics, its applications, to understand of comprehensive methodology and to utilize a relevant knowledge and information on neutron activation analysis.

  3. Producing Activated Carbon from Scrap Tires by Thermo-Chemical Method and Evaluation its Efficiency at Removal Racid Black1 Dye

    OpenAIRE

    A.R Rahmani; E Hoseinzadeh

    2012-01-01

    Background and Objectives: The disposal of waste tires has become an increasingly important issue worldwide in recent years. Tires not only take up large amounts of valuable landfill space, but also create fire hazards and provide a refuge for disease- carrying creatures. The goal of this study was to produce activated carbon from scrap tires .Adsorption of Acid Black1 (AB1) in aqueous solution as a pollutant by the activated carbon was also investigated.Materials and Methods: Activated carbo...

  4. COLLABORATION MANAGEMENT FOR SUBJECTS OF EDUCATIONAL ACTIVITY IN INFORMATION-EDUCATIONAL SPACE

    Directory of Open Access Journals (Sweden)

    Yury F. Telnov

    2015-01-01

    Full Text Available This article presents a conception of collaboration of main actors in information-educational space, based on service level management process from the library of best practices ITIL, composition and procedure of information interchange between actors, responsibility of each actor, metrics and key performance indicators of each actor’s activity within educational service delivery. 

  5. Vision of physical education teachers in secondary education in Andalusia on outdoor activities

    Directory of Open Access Journals (Sweden)

    Francisco Javier Giménez Fuentes-Guerra

    2011-06-01

    Full Text Available The opinions and participation of physical education teacher who teaches in the Secondary Education in the andalusian community has allowed us to investigate a block content of the curriculum of the subject. We have been watching since the beginning of our work, the activities in the environment as a block of content on the subject of interest to teacher of physical education, however, curriculum development in schools in poor andalusians. From the methodological rigor, has conducted a comprehensive analysis of legislation, relevant documents and information that form the theoretical framework of research. The following has been collected through questionnaires and interviews, the views of physical education teachers and input from experts trainers in activities in the environment. After analysis and discussion of the results have raised some improvements with the future outlook related to training, physical education teacher in the Secondary Education in Andalucia and activities in the environment. For example, the incorporation of progressive form of classical training and education activities of non-formal education such as: camping and camps

  6. CHARACTERIZATION OF A SAMPLE OF INTERMEDIATE-TYPE ACTIVE GALACTIC NUCLEI. II. HOST BULGE PROPERTIES AND BLACK HOLE MASS ESTIMATES

    Energy Technology Data Exchange (ETDEWEB)

    Benitez, Erika; Cruz-Gonzalez, Irene; Martinez, Benoni; Jimenez-Bailon, Elena [Instituto de Astronomia, Universidad Nacional Autonoma de Mexico, Apdo. Postal 70-264, Mexico D.F. 04510 (Mexico); Mendez-Abreu, Jairo; Lopez-Martin, Luis [Instituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife (Spain); Fuentes-Carrera, Isaura [Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional (ESFM-IPN), U.P. Adolfo Lopez Mateos, Mexico D.F. 07730 (Mexico); Chavushyan, Vahram [Instituto Nacional de Astrofisica, Optica y Electronica, Apdo. Postal 51-216, 72000 Puebla (Mexico); Leon-Tavares, Jonathan, E-mail: erika@astro.unam.mx [Aalto University Metsaehovi Radio Observatory, Metsaehovintie 114, 02540 Kylmaelae (Finland)

    2013-02-15

    We present a study of the host bulge properties and their relations with the black hole mass for a sample of 10 intermediate-type active galactic nuclei (AGNs). Our sample consists mainly of early-type spirals, four of them hosting a bar. For 70{sup +10} {sub -17}% of the galaxies, we have been able to determine the type of the bulge, and find that these objects probably harbor a pseudobulge or a combination of classical bulge/pseudobulge, suggesting that pseudobulges might be frequent in intermediate-type AGNs. In our sample, 50% {+-} 14% of the objects show double-peaked emission lines. Therefore, narrow double-peaked emission lines seem to be frequent in galaxies harboring a pseudobulge or a combination of classical bulge/pseudobulge. Depending on the bulge type, we estimated the black hole mass using the corresponding M {sub BH}-{sigma}* relation and found them within a range of 5.69 {+-} 0.21 < log M {sup {sigma}}*{sub BH} < 8.09 {+-} 0.24. Comparing these M {sup {sigma}}*{sub BH} values with masses derived from the FWHM of H{beta} and the continuum luminosity at 5100 A from their SDSS-DR7 spectra (M {sub BH}), we find that 8 out of 10 (80{sup +7} {sub -17}%) galaxies have black hole masses that are compatible within a factor of 3. This result would support that M {sub BH} and M {sup {sigma}}*{sub BH} are the same for intermediate-type AGNs, as has been found for type 1 AGNs. However, when the type of the bulge is taken into account, only three out of the seven (43{sup +18} {sub -15}%) objects of the sample have their M {sup {sigma}}*{sub BH} and M {sub BH} compatible within 3{sigma} errors. We also find that estimations based on the M {sub BH}-{sigma}* relation for pseudobulges are not compatible in 50% {+-} 20% of the objects.

  7. STEM learning activity among home-educating families

    Science.gov (United States)

    Bachman, Jennifer

    2011-12-01

    Science, technology, engineering, and mathematics (STEM) learning was studied among families in a group of home-educators in the Pacific Northwest. Ethnographic methods recorded learning activity (video, audio, fieldnotes, and artifacts) which was analyzed using a unique combination of Cultural-Historical Activity Theory (CHAT) and Mediated Action (MA), enabling analysis of activity at multiple levels. Findings indicate that STEM learning activity is family-led, guided by parents' values and goals for learning, and negotiated with children to account for learner interests and differences, and available resources. Families' STEM education practice is dynamic, evolves, and influenced by larger societal STEM learning activity. Parents actively seek support and resources for STEM learning within their home-school community, working individually and collectively to share their funds of knowledge. Home-schoolers also access a wide variety of free-choice learning resources: web-based materials, museums, libraries, and community education opportunities (e.g. afterschool, weekend and summer programs, science clubs and classes, etc.). A lesson-heuristic, grounded in Mediated Action, represents and analyzes home STEM learning activity in terms of tensions between parental goals, roles, and lesson structure. One tension observed was between 'academic' goals or school-like activity and 'lifelong' goals or everyday learning activity. Theoretical and experiential learning was found in both activity, though parents with academic goals tended to focus more on theoretical learning and those with lifelong learning goals tended to be more experiential. Examples of the National Research Council's science learning strands (NRC, 2009) were observed in the STEM practices of all these families. Findings contribute to the small but growing body of empirical CHAT research in science education, specifically to the empirical base of family STEM learning practices at home. It also fills a

  8. Investigation of antioxidant activity of some fruit stem barks in the Eastern Black Sea Region

    Directory of Open Access Journals (Sweden)

    Aytaç Güder

    2016-10-01

    Full Text Available Antioxidant compounds in food play an important role as a health protecting factor. Scientific evidence suggests that antioxidants reduce the risk for chronic diseases including cancer and heart disease. Primary sources of naturally occurring antioxidants are whole grains, fruits and vegetables. Antioxidant activity can be investigated by using different methods such as total antioxidant activity, hydrogen peroxide and DPPH free radical scavenging activities, metal-chelating activity, total phenolic and flavonoid contents and others. In this study, antioxidant activity of the ethanol-water extracts of three stem barks, Kiwi (Actinidia chinensis Planch. (AC, lemon (Citrus limon (L. Burm. f. (CL and chery laurel (Laurocerasus officinalis Roem. (LO has been designated. According to FTC method, the total antioxidant activities (% of AC, CL and LO have been determined as 73.35, 67.59 and 61.62, respectively. The DPPH radical scavenging activities of AC, CL, LO, BHA, RUT and TRO in terms of SC50 values (µg/mL were found as 50.52, 56.56, 98.18, 8.58, 17.01, 26.84, respectively. Total phenolic and total flavonoid contents in AC, CL and LO ranged from 850.71 to 457.79 µg gallic acid equivalent/g and 58.77 to 22.91 µg of catechin equivalents/g, respectively. In conclusion, the extracts of AC showed higher antioxidant activity than the other samples so needs further exploration for its effective use in pharmaceutical and medicine sectors.

  9. THE MOST MASSIVE ACTIVE BLACK HOLES AT z ∼ 1.5-3.5 HAVE HIGH SPINS AND RADIATIVE EFFICIENCIES

    International Nuclear Information System (INIS)

    Trakhtenbrot, Benny

    2014-01-01

    The radiative efficiencies (η) of 72 luminous unobscured active galactic nuclei at z ∼ 1.5-3.5, powered by some of the most massive black holes (BHs), are constrained. The analysis is based on accretion disk (AD) models, which link the continuum luminosity at rest-frame optical wavelengths and the BH mass (M BH ) to the accretion rate through the AD, M-dot AD . The data are gathered from several literature samples with detailed measurements of the Hβ emission line complex, observed at near-infrared bands. When coupled with standard estimates of bolometric luminosities (L bol ), the analysis suggests high radiative efficiencies, with most of the sources showing η > 0.2, that is, higher than the commonly assumed value of 0.1, and the expected value for non-spinning BHs (η = 0.057). Even under more conservative assumptions regarding L bol (i.e., L bol = 3 × L 5100 ), most of the extremely massive BHs in the sample (i.e., M BH ≳ 3 × 10 9 M ☉ ) show radiative efficiencies which correspond to very high BH spins (a * ), with typical values well above a * ≅ 0.7. These results stand in contrast to the predictions of a ''spin-down'' scenario, in which a series of randomly oriented accretion episodes leads to a * ∼ 0. Instead, the analysis presented here strongly supports a ''spin-up'' scenario, which is driven by either prolonged accretion or a series of anisotropically oriented accretion episodes. Considering the fact that these extreme BHs require long-duration or continuous accretion to account for their high masses, it is argued that the most probable scenario for the super-massive black holes under study is that of an almost continuous sequence of randomly yet not isotropically oriented accretion episodes

  10. Exploring the Activity of Daily Living of Sexual Activity: A Survey in Occupational Therapy Education

    Directory of Open Access Journals (Sweden)

    Helene L. Lohman

    2017-03-01

    Full Text Available This study aimed to query occupational therapy educators in professional programs in the United States about the amount of time spent addressing sexual activity and the type and depth of education related to sexual activity. The study aims to inform educators about how sexual activity is taught. A cross-sectional survey research design was used with both closed- and open-ended questions. A total of 51 educators participated. An average of 3.5 hr was spent teaching sexual activity. Many of the participants were comfortable teaching sexual activity. However, some reported that sexual activity was often an overlooked topic in occupational therapy curriculum and was not emphasized as much as other activities of daily living. In addition, participants reported that the under emphasis of teaching sexuality may be due to a lack of educational background, the broadness of the topic, discomfort of the students, and a lack of information in textbooks. Most of the participants are comfortable teaching sexual activity and believe that it is an important topic in occupational therapy curriculum. However, many consider it an overlooked topic specifically with chronic conditions and sexually transmitted infections. Therefore, educating instructors on sexual activity and pedagogical methods will enhance occupational therapy curriculum.

  11. An active learning organisation: teaching projects in electrical engineering education

    OpenAIRE

    Christensen, H.-P.; Vos, Henk; de Graaff, E.; Lemoult, B.

    2004-01-01

    The introduction of active learning in engineering education is often started by enthusiastic teachers or change agents. They usually encounter resistance from stakeholders such as colleagues, department boards or students. For a successful introduction these stakeholders all have to learn what active learning involves for them. This means that active learning has to take place on three levels: the students, the staff, and the organisation. These three actors have each to learn from experienc...

  12. Embedding Volunteer Activity into Paramedic Education.

    Science.gov (United States)

    Ross, Linda; Kabidi, Sophia

    2017-01-01

    Paramedics require a wide range of skills that are beyond clinical or technical skills in order to meet the demands of the role and provide quality and compassionate care to patients. Non-technical or "soft" skills and attributes are generally challenging to teach and develop in the classroom setting. Volunteerism provides an opportunity for students to gain exposure to different communities and develop interpersonal skills. This cross-sectional study used one-on-one interviews with 12 third-year Bachelor of Emergency Health (Paramedic) students from Monash University, Australia, who completed a community volunteering program. Results suggest that paramedic students see volunteering as a highly valuable means of developing a number of skills crucial to their future roles and paramedic practice. Volunteering also provided students with an opportunity to learn about themselves and the broader community, develop confidence, and improve overall job-readiness and employability. This study demonstrates that embedding volunteering into paramedic education is an effective way to develop the broad range of paramedic attributes required for the role. These experiences allow students to make the important transition to a job-ready graduate paramedic who can provide holistic patient-centred care.

  13. Education for sustainable development using indoor and outdoor activities

    Science.gov (United States)

    Žigon, Lenka

    2016-04-01

    Environmental education became an important part of our development in the last years. We put a lot of effort into a task how to improve students'values, skills, understanding and how to significantly enhance their learning and achievements regarding ecological problems. At the same time we also know that environmental learning is easier when our students have the opportunity to feel, see, touch, taste and smell the nature. Therefore teachers in my school develop regular access to the outdoors as a learning resource. Students understand the impact of their activities on the environment and they also like to participate in the nature protection. My school (Biotechnical Centre)is an example of educational centre where different research and development programes are strongly oriented to the sustainable development. Students are educated to become experts in biotechnology, agronomy, food technology and horticulture. At the same time they are educated how to care for the nature. The institution itself cooperates with different fields of economy (farms, food - baker industry, floristry, country design etc.). For these reasons the environmental education is an essential dimension of basic education focused on a sphere of interaction that lies at the root of personal and social development. We try to develop different outdoor activities through all the school year. These activities are: analyse the water quality; research waste water treatment plants; exploration of new food sources (like aquaponics - where fish and plants grow together); collecting plants with medical activities; care for the plants in the school yard; growing new plants in the poly tunnel; learning about unknown plants - especially when visiting national and regional parks; selling different things in the school shop - also for local citizens; participating in the world wide activity - "Keep the country tidy" etc. Students and teachers enjoy to participate in different outdoor activities; we both

  14. Reversing the AAPT Photo Contest: A Physics Teacher Education Activity

    Science.gov (United States)

    Hechter, Richard P.

    2016-11-01

    This year while awaiting the arrival of the AAPT High School Physics Photo Contest poster, I developed an idea for my physics teacher education course that used the photo contest in a new context. While using an external source like a photograph to learn physics is not new to physics education, this article describes how we used the foundational idea of the AAPT photo contest as the context to facilitate new lessons and activities for secondary-level students. The blending of photography and physics education can also be done at the high school level and undergraduate level as a creative means for content review and communication of conceptual understanding.

  15. Acetylcholinesterase activity as a biomarker of exposure to antibiotics and pesticides in the black tiger shrimp (Penaeus monodon).

    Science.gov (United States)

    Tu, Huynh Thi; Silvestre, Frederic; Scippo, Marie-Louise; Thome, Jean-Pierre; Phuong, Nguyen Thanh; Kestemont, Patrick

    2009-07-01

    This study aimed to assess the potentiality to use cholinesterase activity (ChE) in black tiger shrimp (Penaeus monodon) as a biomarker of exposure to 2 antibiotics (enrofloxacin, furazolidone) and 2 pesticides (endosulfan, deltamethrin), commonly used in Vietnamese farms. ChE from muscle and gills was first characterised using three different substrates and specific inhibitors. Results showed that both tissues possess only one ChE which displays the typical properties of an acetylcholinesterase (AChE). In a second part, shrimp (average weight of 8.8-10 g) were fed with medicated-feed containing 4g enrofloxacin (quinolone) or furazolidone (nitrofuran)/kg for 7 days, or exposed to 3 actual concentrations of endosulfan (0, 0.009, 0.09, 0.9 microg/L) or deltamethrin (0, 0.0007, 0.007, 0.07 microg/L) for 4 days. After treatment, animals were decontaminated during 7 days. We observed that AChE activity in muscle was not significantly affected in shrimp fed with enrofloxacin or furazolidone, while it significantly decreased (up to 28%) in gills of shrimp fed with furazolidone. Following endosulfan and deltamethrin exposure, no significant changes in AChE activity were observed in gills. However, a significant decrease occurred in muscle after 4 days exposure (inhibition of 30% and 49% at 0.9 microg/L endosulfan and 0.07 microg/L deltamethrin, respectively). While muscle AChE activity should be assessed to point out endosulfan or deltamethrin exposure, gill AChE activity impairment could indicate an exposure to furazolidone. The present study underlines the benefits to use AChE as a biomarker of chemotherapeutics as part of an integrated aquaculture management to reach industry sustainability.

  16. Opening the black-box of person-centred care: An arts-informed narrative inquiry into mental health education and practice.

    Science.gov (United States)

    Schwind, Jasna K; Lindsay, Gail M; Coffey, Sue; Morrison, Debbie; Mildon, Barb

    2014-08-01

    Nursing education has a history of encouraging students to know their patients and to negotiate the in-between of art/science, person/profession, and intuition/evidence. Nurse-teachers know that students may abandon some values and practices when they encounter practice environments that are complex and have competing agendas. We are concerned that nursing knowledge is black-boxed, invisible and taken-for-granted, in healthcare settings. Our research explores how nursing students and nurses are constructing and enacting person-centred care in mental health education and practice. We want to understand the nursing standpoint on this significant ontological issue and to make nursing knowledge construction and utilization visible; illuminating how person-centred theory emerges from practice. The process involved four 3-hour group meetings and an individual follow-up telephone conversation. Students and nurses met at a tertiary-care mental health organization. Fourteen nurses (Registered Nurses and Registered Practical Nurses) and nursing students (Bachelor of Science in Nursing and Practical Nursing) participated in our inquiry. We used arts-informed narrative inquiry to explore experience through the arts such as metaphor, collage, poems, letters, and group conversations. The black-box is opened as the inquiry reveals how nursing knowledge is constructed, assumptions are challenged and new practices emerge. Our research is significant for education and for practice and is transferable to other populations and settings. Nurses are affirmed in person-centred values and practices that include partnership with those in their care, role modeling for colleagues and mentoring students and new nurses. Students participate in transferring their learning from school to practice, in the company of experienced colleagues; together they open the black-box to show how nurses conceptualize and enact person-centred care. Copyright © 2014 Elsevier Ltd. All rights reserved.

  17. Global Practices of Interprofessional Education (IPE) and Relevant International Activities.

    Science.gov (United States)

    Arakawa, Naoko

    2017-01-01

    Activities related to interprofessional education (IPE) vary between countries according to local and national health needs and systems. The International Pharmaceutical Federation (FIP) Education Initiative endeavors to provide a global vision in IPE by the sharing of experiences and gathering of evidence collaboratively to facilitate country-level initiatives. The purpose of this paper is to contribute to the further development of IPE activities in pharmacy in Japan through sharing global perspectives and activities related to IPE. FIP Education Initiative published the Interprofessional Education in a Pharmacy Context: Global Report in September 2015, which marked a milestone in the growing recognition of IPE in pharmacy globally. The paper shared global and regional perspectives and experiences in IPE in pharmacy, both from the report and FIP activities. This paper can be seen as a snapshot of IPE-related international activities, which enables gaps and challenges in implementing IPE activities in Japan to be identified. This paper provides an opportunity to explore global trends and initiatives regarding IPE, and to consider how to form and implement IPE specifically based on Japanese health needs and systems.

  18. NASA Desert RATS 2011 Education Pilot Project and Classroom Activities

    Science.gov (United States)

    Gruener, J. E.; McGlone, M.; Allen, J.; Tobola, K.; Graff, P.

    2012-01-01

    The National Aeronautics and Space Administration's (NASA's) Desert Research and Technology Studies (Desert RATS) is a multi-year series of tests of hardware and operations carried out annually in the high desert of Arizona, as an analog to future exploration activities beyond low Earth orbit [1]. For the past several years, these tests have occurred in the San Francisco Volcanic Field, north of Flagstaff. For the 2011 Desert RATS season, the Exploration Systems Mission Directorate (ESMD) at NASA headquarters provided support to develop an education pilot project that would include student activities to parallel the Desert RATS mission planning and exploration activities in the classroom, and educator training sessions. The development of the pilot project was a joint effort between the NASA Johnson Space Center (JSC) Astromaterials Research and Exploration Science (ARES) Directorate and the Aerospace Education Services Project (AESP), managed at Penn State University.

  19. The Benefits of Active Video Games for Educational and Physical Activity Approaches: A Systematic Review

    Directory of Open Access Journals (Sweden)

    Carlos Merino-Campos

    2016-07-01

    Full Text Available This article sets out to conduct a systematic review of the current literature on active video games as potential educational tools for physical education or physical activity. To begin with, research on active video games for educational and physical purposes has been examined with the purpose of verifying improvement of attitudes, intellectual skills, knowledge, motor skills and physical properties associated with physical activity and physical education. A second aim will be to determine the effectiveness of active video games compared with traditional approaches to physical activity. From this perspective, a systematic literature search from relevant international databases was conducted from January to July 2015 in order to find papers published in journals or conference proceedings from January 2010 onwards. Then, 2648 references were identified in database searches and 100 of these papers met the inclusion criteria. Two main conclusions are to be drawn from this research. Firstly, controlled studies demonstrate that active video games increase capacities in relation to physical activity and education. Secondly, Research also shows that physical activity interventions designed and measured using behavioural theories are more likely to be successful in comparison with traditional exercise activities.

  20. The Application of Crowd Sourcing in Educational Activities

    Directory of Open Access Journals (Sweden)

    Monika Skaržauskaitė

    2012-07-01

    Full Text Available Purpose—This paper analyses the role of crowdsourcing use in educational activities. In recent decades, the rapid growth of innovative Internet-based information and communication technologies created a new field of opportunities for educational organizations to reach their goals. Crowdsourcing, as defined by Jeff Howe (2006, is the act of taking a job traditionally performed by a designated employee and outsourcing it to an undefined, generally large group of people in the form of an open call. The newness of the term indicates that there is not significant literature on the subject of how this operating method is utilized in educational activities. The objective of this paper therefore is to take an exploratory look at how educational organizations are using crowdsourcing as part of their activities at the present time, and to suggest how the practice of crowdsourcing may spread to other educational activities as time goes on.Design/methodology/approach—The paper presents a conceptual model of crowdsourcing application in educational activities. The model is supported by analysis and synthesis of scientific literature and case studies.Findings—Analysis of literature and case studies allowed the creation of a conceptual model which shows the use of crowdsourcing in educational and supporting tasks of organizations. This tool will be helpful for future research on the subject, since it provides a framework of the analysis.Research limitations/implications—The model presented here is a conceptual model and needs to be validated empirically.Practical implications—For practical purposes, the variables proposed in the model would provide a more comprehensive framework for the assessment of crowdsourcing use in education activities and work as a guide for crowdsourcing strategies.Originality/Value—Although the relevant literature consists of many partial and indirect insights and indications in the direction as conceived by the model, the

  1. Exploring the Perceptions of Study Abroad among Black Undergraduates at Historically Black Colleges and Universities

    Science.gov (United States)

    Gaines, Nykia Dionne

    2012-01-01

    International education helps students become more engaged within the United States and abroad. Black undergraduates continue to be underrepresented in study abroad despite two decades of increased enrollment by Black students in higher education in the United States. This study had three purposes: (1) to explore how Black undergraduates attending…

  2. THE EFFECT OF BUSINESS FIRMS’ INTERNATIONAL ACTIVITIES ON THE FIRM PERFORMANCE: A CENTRAL BLACK SEA REGION CASE

    Directory of Open Access Journals (Sweden)

    Erkut ALTINDAG

    2014-04-01

    Full Text Available In this study, the effect of business firms carrying on business in Central Black Sea Region of Turkey on the performance of these firms. Especially how it affected SMEs (Small and Medium Sized Enterprises was analyzed. When particularly considering the effects of business that have SME quality on economy of Turkey, such kind of researches are noticed to have a basis in recent years. The research depended upon the data obtained from enterprises through original qualified questionnaire. The questionnaire question forms were scaled benefiting from the studies in the literature based upon international activities and business performance measurement. For all variables, the scales in the literature were taken and included into research questionnaire. The questionnaires were performed to SMEs and large-scale enterprises. In the research factor analysis, correlation and regression analysis were included as analysis methods. According to the obtained results, it was determined that international activities had a positive effect on the performance of enterprises. The results were interpreted, and various suggestions were offered to academicians, and administrators.

  3. Eriochrome Blue Black modified activated carbon as solid phase extractor for removal of Pb(II ions from water samples

    Directory of Open Access Journals (Sweden)

    Hassan M. Albishri

    2017-05-01

    Full Text Available In the current study, a sensitive and simple method for the removal of lead Pb(II, from water samples prior to its determination by inductively coupled plasma optical emission spectrometry (ICP-OES, was investigated. The method utilized activated carbon (AC physically modified with Eriochrome Blue Black (EBB as a solid-phase extractant. Surface properties of the AC-EBB phase were characterized by FT-IR and SEM. The separation parameters for effective adsorption of lead Pb(II, including effects of pH, initial concentration of Pb(II, coexisting ions and shaking time using batch method were studied. The optimum pH value for the separation of Pb(II on the new sorbent was 7.0, and the maximum static adsorption capacity of Pb(II onto the AC-EBB was 127.896 mg/g at this pH and after 1 h contact time. The Pb(II adsorption data were modeled using Langmuir adsorption isotherms. Results demonstrated that the adsorption of Pb(II onto activated carbon followed pseudo second-order kinetic model.

  4. A community-based trial of educational interventions with fecal immunochemical tests for colorectal cancer screening uptake among blacks in community settings.

    Science.gov (United States)

    Christy, Shannon M; Davis, Stacy N; Williams, Kimberly R; Zhao, Xiuhua; Govindaraju, Swapomthi K; Quinn, Gwendolyn P; Vadaparampil, Susan T; Lin, Hui-Yi; Sutton, Steven K; Roethzeim, Richard R; Shibata, David; Meade, Cathy D; Gwede, Clement K

    2016-11-15

    Intervention studies among individuals in diverse community settings are needed to reduce health disparities in colorectal cancer (CRC) screening and mortality rates. The current study compared the efficacy of 2 intervention conditions promoting CRC screening among black individuals. Black individuals ages 50 to 75 years (N = 330) were recruited in community settings in 4 Tampa Bay counties. After obtaining consent and conducting a baseline interview to assess sociodemographic and health-related variables, participants received either a culturally targeted CRC photonovella booklet plus a fecal immunochemical test (FIT) kit or a standard CRC screening brochure plus an FIT kit. The primary outcome was FIT kit screening uptake. FIT screening uptake at 6 months was 86.7% overall (90.3% in the brochure group and 81.9% in the photonovella group). Controlling for baseline between-group differences, there was no influence of intervention on FIT kit uptake (P = .756). Significant predictors of not returning an FIT kit included being unable to work (P = .010), having higher religious belief scores (P = .015), and living farther from the cancer center (P = .015). Providing FIT kits and educational print materials to black individuals in community settings resulted in high rates of CRC screening. The study also identified subgroups of participants who were less likely to return an FIT kit and provides insight for future interventions. Cancer 2016;122:3288-3296. © 2016 American Cancer Society. © 2016 American Cancer Society.

  5. Antioxidant enzyme activity is associated with blood pressure and carotid intima media thickness in black men and women: The SABPA study.

    Science.gov (United States)

    van Zyl, Caitlynd; Huisman, Hugo W; Mels, Catharina M C

    2016-05-01

    In the urbanized black population of South Africa, oxidative stress may play a crucial role in the development of hypertension. Since oxidative stress may result from impaired antioxidant capacity we aimed to investigate antioxidant enzyme activity as well as its associations with vascular function and structure in a bi-ethnic population. Participants included 409 subjects almost equally stratified by ethnicity and sex. Blood pressure and carotid intima media thickness (cIMT) were measured and glutathione peroxidase (GPx), glutathione reductase (GR), superoxide dismutase (SOD) and catalase (CAT) enzyme activities were determined. GR activity was significantly higher in black men (7.71 nmol/min/ml vs 2.23 nmol/min/ml) and women (6.46 nmol/min/ml vs 2.86 nmol/min/ml) (p women, GPx activity was significantly lower (p women (31.9 nmol/min/ml vs 37.1 nmol/min/ml). In black men, cIMT was positively and independently associated with GR activity (R(2) = 0.30; β = 0.18; p = 0.048). In black women, systolic blood pressure (R(2) = 0.21; β = -0.24; p = 0.014), diastolic blood pressure (R(2) = 0.11; β = -0.20; p = 0.044) and mean arterial pressure (R(2) = 0.20; β = -0.31; p = 0.002) were inversely associated with GPx activity. No associations were found in the white groups. The positive association between GR activity and cIMT in black men may be the result of a compensatory response to prevent arterial remodelling. The inverse association between GPx activity and blood pressure in black women may indicate a role for decreased GPx activity in hypertension development in this population. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  6. Antioxidant activity of wild edible plants in the Black Sea Region of Turkey

    Energy Technology Data Exchange (ETDEWEB)

    Ozen, T.

    2010-07-01

    The anti oxidative activity of the 80% ethanol extract obtained from eleven commonly consumed wild edible plants was determined according to the phospho molybdenum method, reducing power, metal chelating, superoxide anion and free radical scavenging activity and compared to standard compounds such as butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT) and trolox. Total phenolic compounds, flavonoids, and anthocyanins in the extracts were also measured. Trachystemon orientalis, Vaccinium mrytillus, Rumex acetosella Polygonum amphibium, Beta vulgaris, and Similax Excelsa had the highest antioxidant capacities. Overall results showed that these plants can serve as good sources of bioactive polyphenols in the human diet and can be regarded as good candidates for nutritional supplement formulations due to their high concentrations of total phenolic compounds, flavonoids and anthocyanins as well as their strong antioxidant activity. (Author) 42 refs.

  7. Forum: Communication Activism Pedagogy. A Call for an Ethic of Transformation in Communication Activism Education

    Science.gov (United States)

    Artz, Lee

    2017-01-01

    Lawrence Frey and David Palmer present a provocative call for communication education and research that is urgent and opportune in this forum's stimulus essay, "Communication Activism Pedagogy and Research: Communication Education Scholarship to Promote Social Justice." The call is urgent because the global human condition--including…

  8. Black ginseng activates Akt signaling, thereby enhancing myoblast differentiation and myotube growth

    Directory of Open Access Journals (Sweden)

    Soo-Yeon Lee

    2018-01-01

    Conclusion: BG enhances myoblast differentiation and myotube hypertrophy by activating Akt/mTOR/p70S6k axis. Thus, our study demonstrates that BG has promising potential to treat or prevent muscle loss related to aging or other pathological conditions, such as diabetes.

  9. The physical activity and health status of two generations of Black ...

    African Journals Online (AJOL)

    Quantitative measures were used, including the ActiGraph GT1M accelerometer, the Global Physical Activity Questionnaire and the Health-Promoting Lifestyle Profile. Sample groups comprised teachers, nurses, social workers and public sector managers. Participants aged between 35 and 45 years were allocated to the ...

  10. Marketing Education Cooperative Education Manual. Classroom and Training Station Connecting Activities

    Science.gov (United States)

    Ohio Department of Education, 2004

    2004-01-01

    Cooperative Education is a teaching method which uses real life work experiences to teach and/or reinforce competencies from the Marketing Content Standards. Direct connections are made between classroom instruction and workplace activities. The activities in this manual can be used to reinforce and contextualize content taught in the classroom…

  11. Black holes new horizons

    CERN Document Server

    Hayward, Sean Alan

    2013-01-01

    Black holes, once just fascinating theoretical predictions of how gravity warps space-time according to Einstein's theory, are now generally accepted as astrophysical realities, formed by post-supernova collapse, or as supermassive black holes mysteriously found at the cores of most galaxies, powering active galactic nuclei, the most powerful objects in the universe. Theoretical understanding has progressed in recent decades with a wider realization that local concepts should characterize black holes, rather than the global concepts found in textbooks. In particular, notions such as trapping h

  12. ENS and FORATOM Education, Training and Knowledge Management Activities

    International Nuclear Information System (INIS)

    Janisz, E.

    2016-01-01

    Full text: The European Atomic Forum (FORATOM) and the European Nuclear Society (ENS) established in 2013 a joint Task Force dedicated to education, training and knowledge management (ETKM) issues in nuclear. The main purpose of the Task Force is to strengthen the link between the industry, research institutes and education and training stakeholders on the European level. Further to inform the European political institutions about the nuclear education and training activities undertaken by various stakeholders. The role of this paper is to present number of activities done in the framework of FORATOM and ENS Task Force and present the recommendations given by the E&T experts. The TF combines the expertise of Human Resources, Training and Education provided by the industry as well as universities and research institutes. The Task Force aims to play a role of a gateway for collaboration between different key players of the nuclear education, training and knowledge management field. Further TF is aiming as well to inform the European institutions about the actions and roles undertaken by ENS and FORATOM members in the area of education and training. (author

  13. [Estimation of activities caused by black spots in digital radiography systems: analysis of black spots by the low concentrate radioisotopes adhered directly to the surface of the phosphor plate].

    Science.gov (United States)

    Hayashi, Hiroaki; Nishihara, Sadamitsu; Takashi, Satoru; Hanamitsu, Hiroki; Mori, Michiko; Miyoshi, Hirokazu; Onuma, Yoji

    2012-01-01

    Because of an accident of the nuclear power plants in the Fukushima, many radioisotopes (RI) have been diffused to the environment. As a result, black spots were appearing on the medical images which were taken by the phosphor plate. The aim of this study is to evaluate the activity (Bq) of radioactive contaminated IP based on the experiment using RI. The radioactive material ((134)Cs and/or (137)Cs) in the form of liquid was dropped on filter paper (25 mm(2)), and radioactive sources having 40-240 Bq activities were made. These sources were closely attached to the IP with irradiation times of 2-22 h. Then, we obtained the relationship between pixel values and products of activities and irradiation times. Using these relationships, we evaluated the activity in the contaminated IP. The evaluated value of approximately 7 Bq was in good agreement with a value which was inhered in a chemical wiper used for the decontamination of the IP. Based on the results, we summarized that almost all black spots were created by the RI adhered directly to the IP.

  14. Educational Added Value Unit: Development and Testing of a Measure for Educational Activities.

    Science.gov (United States)

    Guiot, Amy B; Kirkendall, Eric S; Gosdin, Craig H; Shah, Samir S; DeBlasio, Dominick J; Meier, Katie A; O'Toole, Jennifer K

    2017-11-01

    University-based hospitalists educate health care professionals as an expectation, often lacking time and support for these activities. The purpose of this study was to (1) develop a tracking tool to record educational activities, (2) demonstrate its applicability and ease of completion for faculty members in different divisions, and (3) compare educational efforts of individuals from different professional pathways and divisions by using the educational added value unit (EAVU). Educational activities were selected and ranked according to preparation effort, presentation time, and impact to calculate the EAVU. Faculty participants from 5 divisions at 1 institution (hospital medicine, general and community pediatrics, emergency medicine, behavior medicine and clinical psychology, and biostatistics and epidemiology) completed the retrospective, self-report tracking tool. A total of 62% (74 of 119) of invited faculty members participated. All faculty earned some EAVUs; however, there was a wide distribution range. The median EAVU varied by division (hospital medicine [21.7], general and community pediatrics [20.6], emergency medicine [26.1], behavior medicine and clinical psychology [18.3], and biostatistics and epidemiology [8.2]). Faculty on the educator pathway had a higher median EAVU compared with clinical or research pathways. The EAVU tracking tool holds promise as a mechanism to track educational activities of different faculty pathways. EAVU collection could be of particular benefit to hospitalists, who often perform unsupported teaching activities. Additional studies are needed to determine how to apply a similar process in different institutions and to determine how EAVUs could be used for additional support for teaching, curriculum development, and educational scholarship. Copyright © 2017 by the American Academy of Pediatrics.

  15. Globalizing Historically Black Business Schools: A Case Study of the Application of Modern Pedagogical Theories of Internationalizing Higher Education

    Science.gov (United States)

    Kedia, Ben L.; Clampit, Jack; Gaffney, Nolan

    2014-01-01

    The AACSB and AIB have each issued reports aimed at ensuring the internationalization of business schools. Historically Black Colleges and Universities (HBCUs)--as underresourced entities serving an underprivileged constituency--may need additional attention. Unfortunately, neither the AACSB nor AIB reports mention HBCUs. The broader literature is…

  16. Back to the Woodshop: Black Education, Imperial Pedagogy, and Post-Racial Mythology under the Reign of Obama

    Science.gov (United States)

    Curry, Tommy J.

    2015-01-01

    Critical race theory has emerged as a powerful critique of color-blind ideology but has failed to adequately explore the colonial history and neocolonial legacies within the claims for a Black citizenship. This article argues for an anticolonial analysis of citizenship based on Carter G. Woodson's Appeal.

  17. To "Bring the Race Along Rapidly": Sport, Student Culture, and Educational Mission at Historically Black Colleges during the Interwar Years.

    Science.gov (United States)

    Miller, Patrick B.

    1995-01-01

    Describes the role and impact of college athletics at historically black colleges during the period between the two world wars. Maintains that sports became a source of pride and a vehicle for social change. Concludes, however, that there is substantial reason to be skeptical about the efficacy of sport to overcome racial prejudice. (CFR)

  18. The Mass Termination of Black Veteran Teachers in New Orleans: Cultural Politics, the Education Market, and Its Consequences

    Science.gov (United States)

    Buras, Kristen L.

    2016-01-01

    This article chronicles the mass firing of veteran teachers in New Orleans, most of them African American, following Hurricane Katrina. The role of Teach for America in providing inexperienced White teacher recruits from outside the community is critiqued. Countering the ahistorical discourse that blames Black veteran teachers for the shortcomings…

  19. Affirmative Action in Education and Black Economic Empowerment in the Workplace in South Africa since 1994: Policies, Strengths and Limitations

    Science.gov (United States)

    Herman, Harold D.

    2017-01-01

    This paper explains the concepts of Affirmative Action (AA) and Black Economic Empowerment (BEE) and the policies developed in post-Apartheid South Africa. It compares it to similar policies adopted in different contexts in Malaysia, India and the U.S.A. It explains and critiques the South African policies on AA and BEE, its history since 1994 and…

  20. Resources for Education and Outreach Activities discussion session

    CERN Document Server

    Barney, David; The ATLAS collaboration; Bourdarios, Claire; Kobel, Michael; Kourkoumelis, Christine; Melo, Ivan; Rangel-Smith, Camila; Alexopoulos, Angelos

    2015-01-01

    Over the past few years a variety of resources have been developed, by individuals and groups, to support Education & Outreach activities in particle physics. Following short (five-minute) presentations by six speakers, a discussion session allowed the audience to go further in depth in activities they found particularly interesting. This paper presents brief overviews from each of the six speakers, followed by a summary of the ensuing discussion

  1. Physical education, school physical activity, school sports and academic performance

    OpenAIRE

    Trudeau, François; Shephard, Roy J

    2008-01-01

    Abstract Background The purpose of this paper is to review relationships of academic performance and some of its determinants to participation in school-based physical activities, including physical education (PE), free school physical activity (PA) and school sports. Methods Linkages between academic achievement and involvement in PE, school PA and sport programmes have been examined, based on a systematic review of currently available literature, including a comprehensive search of MEDLINE ...

  2. The Investigation of Active Tectonism Offshore Cide-Sinop, Southern Black Sea by Seismic Reflection and Bathymetric Data

    Science.gov (United States)

    Alp, Y. I.; Ocakoglu, N.; Kılıc, F.; Ozel, A. O.

    2017-12-01

    The active tectonism offshore Cide-Sinop at the Southern Black Sea shelf area was first time investigated by multi-beam bathymetric and multi-channel seismic reflection data under the Research Project of The Scientific and Technological Research Council of Turkey (TUBİTAK-ÇAYDAG-114Y057). The multi-channel seismic reflection data of about 700 km length were acquired in 1991 by Turkish Petroleum Company (TP). Multibeam bathymetric data were collected between 2002-2008 by the Turkish Navy, Department of Navigation, Hydrography and Oceanography (TN-DNHO). Conventional data processing steps were applied as follows: in-line geometry definition, shot-receiver static correction, editing, shot muting, gain correction, CDP sorting, velocity analysis, NMO correction, muting, stacking, predictive deconvolution, band-pass filtering, finite-difference time migration, and automatic gain correction. Offshore area is represented by a quite smooth and large shelf plain with an approx. 25 km wide and the water depth of about -100 m. The shelf gently deepens and it is limited by the shelf break with average of -120 m contour. The seafloor morphology is charasterised by an erosional surface. Structurally, E-W trending strike-slip faults with generally compression components and reverse/thrust faults have been regionally mapped for the first time. Most of these faults deform all seismic units and reach the seafloor delimiting the morphological highs and submarine plains. Thus, these faults are intepreted as active faults. These results support the idea that the area is under the active compressional tectonic regime

  3. 40 CFR 5.400 - Education programs or activities.

    Science.gov (United States)

    2010-07-01

    ... affecting any applicant, student, or employee of such recipient that these Title IX regulations would... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Education programs or activities. 5.400 Section 5.400 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY GENERAL NONDISCRIMINATION ON THE...

  4. Physical Education and Physical Activity: A Historical Perspective

    Science.gov (United States)

    Guedes, Claudia

    2007-01-01

    Although many recent studies have shown that the lack of physical activity is one of the major causes of obesity, diabetes, and cardiovascular disease among children and adolescents, few studies have shown the connection between the lack of physical education and the prevalence of a sedentary lifestyle. However, it is clear that physical education…

  5. Employability and work-related learning activities in higher education

    DEFF Research Database (Denmark)

    Magnell, Marie; Kolmos, Anette

    2017-01-01

    The focus of this paper is on how academic staff perceive their roles and responsibilities regarding work-related learning, and how they approach and implement work-related learning activities in curricula across academic environments in higher education. The study is based on case studies, inclu...

  6. The Structure of Sociology in the Educational Activities of Unesco

    Science.gov (United States)

    Card, B. Y.

    1974-01-01

    An exploration of the structure of sociology in Unesco's educational activities during 1970-1971 reveals that Unesco has dual political and cultural bureaucratic structures that are complementary for contributions in sociology. Journal is available from Mouton & Co., 5 Herder Street, The Hague, Netherlands. (ND)

  7. An active learning organisation: teaching projects in electrical engineering education

    NARCIS (Netherlands)

    Christensen, H.-P.; Vos, Henk; de Graaff, E.; Lemoult, B.

    2004-01-01

    The introduction of active learning in engineering education is often started by enthusiastic teachers or change agents. They usually encounter resistance from stakeholders such as colleagues, department boards or students. For a successful introduction these stakeholders all have to learn what

  8. Physical Activity in Physical Education: Are Longer Lessons Better?

    Science.gov (United States)

    Smith, Nicole J.; Monnat, Shannon M.; Lounsbery, Monica A. F.

    2015-01-01

    Background: The purpose of this study was to compare physical activity (PA) outcomes in a sample of high school (HS) physical education (PE) lessons from schools that adopted "traditional" versus "modified block" schedule formats. Methods: We used the System for Observing Fitness Instruction Time (SOFIT) to conduct observations…

  9. Physical Activity Levels in Portuguese High School Physical Education

    Science.gov (United States)

    Marmeleira, Jose Francisco Filipe; Aldeias, Nuno Micael Carrasqueira; da Graca, Pedro Miguel dos Santos Medeira

    2012-01-01

    The main aim of this study was to evaluate the physical activity (PA) levels of high school Portuguese students during physical education (PE) and investigate the association of PA levels with students' goal orientation and intrinsic motivation. Forty-six students from three high schools participated. Heart rate telemetry and pedometry were used…

  10. Features of optical modeling in educational and scientific activity ...

    African Journals Online (AJOL)

    The article discusses the functionality of existing software for the modeling, analysis and optimization of lighting systems and optical elements, through which the stage of their design can be automated completely. The use of these programs is shown using the example of scientific work and the educational activity of ...

  11. Educational activities for the diffusion of scientific culture

    Science.gov (United States)

    Ferlet, Roger

    2015-08-01

    Considering there is a divorce between science and culture, we suggest activities such as trails of mathematical/astronomical knowledge and vision of scientific teaching and education, that are aiming ata global, citizen dialogue, at reviving a truly human culture integrating science, and at answering all kinds of obscurantism/fundamentalism.

  12. Using Sport Education in a University Physical Activity Course

    Science.gov (United States)

    Blocker, Danielle; Wahl-Alexander, Zachary

    2018-01-01

    At a majority of colleges and universities around the country, basic activity courses are taught predicated on teaching students basic skills and instilling healthy habits. The purpose of this article is to outline and describe a physical conditioning course that utilized the sport education (SE) model and emphasized outside engagement to instill…

  13. "Can You Repeat That?" Teaching Active Listening in Management Education

    Science.gov (United States)

    Spataro, Sandra E.; Bloch, Janel

    2018-01-01

    Listening is a critical communication skill and therefore an essential element of management education. "Active" listening surpasses passive listening or simple hearing to establish a deeper connection between speaker and listener, as the listener gives the speaker full attention via inquiry, reflection, respect, and empathy. This…

  14. Music education and musical activities in Lagos: then and now ...

    African Journals Online (AJOL)

    This article is a historical excursion into the musical activities in Lagos from around 600 to 1800, which it classifies as the first phase, from around 1800 to 1914, the second period, and third period, from around 1914 up to date and how they have affected music education in the area. The study also highlights the roles played ...

  15. A Behavior-Based Approach for Educational Robotics Activities

    Science.gov (United States)

    De Cristoforis, P.; Pedre, S.; Nitsche, M.; Fischer, T.; Pessacg, F.; Di Pietro, C.

    2013-01-01

    Educational robotics proposes the use of robots as a teaching resource that enables inexperienced students to approach topics in fields unrelated to robotics. In recent years, these activities have grown substantially in elementary and secondary school classrooms and also in outreach experiences to interest students in science, technology,…

  16. Tools to investigate how interprofessional education activities link to competencies.

    Science.gov (United States)

    West, Courtney; Veronin, Michael; Landry, Karen; Kurz, Terri; Watzak, Bree; Quiram, Barbara; Graham, Lori

    2015-01-01

    Integrating interprofessional education (IPE) activities and curricular components in health professions education has been emphasized recently by the inclusion of accreditation standards across disciplines. The Interprofessional Education Collaborative (IPEC) established IPE competencies in 2009, but evaluating how activities link to competencies has not been investigated in depth. The purpose of this project is to investigate how well two IPE activities align with IPEC competencies. To evaluate how our IPE activities met IPEC competencies, we developed a checklist and an observation instrument. A brief description of each is included as well as the outcomes. We analyzed Disaster Day, a simulation exercise that includes participants from Nursing, Medicine, and Pharmacy, and Interprofessional Healthcare Ethics (IPHCE), a course that introduced medical, nursing, and pharmacy students to ethical issues using didactic sessions and case discussions. While both activities appeared to facilitate the development of IPE competencies, Disaster Day aligned more with IPEC competencies than the IPHCE course and appears to be a more comprehensive way of addressing IPEC competencies. However, offering one IPE activity or curricular element is not sufficient. Having several IPE options available, utilizing the tools we developed to map the IPE curriculum and evaluating competency coverage is recommended.

  17. Tools to investigate how interprofessional education activities link to competencies

    Directory of Open Access Journals (Sweden)

    Courtney West

    2015-07-01

    Full Text Available Integrating interprofessional education (IPE activities and curricular components in health professions education has been emphasized recently by the inclusion of accreditation standards across disciplines. The Interprofessional Education Collaborative (IPEC established IPE competencies in 2009, but evaluating how activities link to competencies has not been investigated in depth. The purpose of this project is to investigate how well two IPE activities align with IPEC competencies. To evaluate how our IPE activities met IPEC competencies, we developed a checklist and an observation instrument. A brief description of each is included as well as the outcomes. We analyzed Disaster Day, a simulation exercise that includes participants from Nursing, Medicine, and Pharmacy, and Interprofessional Healthcare Ethics (IPHCE, a course that introduced medical, nursing, and pharmacy students to ethical issues using didactic sessions and case discussions. While both activities appeared to facilitate the development of IPE competencies, Disaster Day aligned more with IPEC competencies than the IPHCE course and appears to be a more comprehensive way of addressing IPEC competencies. However, offering one IPE activity or curricular element is not sufficient. Having several IPE options available, utilizing the tools we developed to map the IPE curriculum and evaluating competency coverage is recommended.

  18. Mobilizing Black America

    Science.gov (United States)

    1993-04-01

    and financially for childbirth or parenting. - Adolescent Pregnancy Black female teenagers 15 to 19 years old were 140 percent more likely to have a...on adolescent pregnancy teenage sexual activity, and federally funded programs prevention. NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT...communities? o Access to Health Care: Does everyone have equal access? o Poverty o Racism o Health Insurance o Black Physicians o Summary o Infant Mortality

  19. Black chrome outgassing study

    International Nuclear Information System (INIS)

    Beat, T.

    1979-01-01

    This report covers why black chrome is of interest, why its outgassing is relevant, how the study was conducted, examples of resultant data, and a conclusion. Black chrome is of interest in several areas of activity. Vacuum outgassing characteristics must be known to establish the pumping speed requirements. How much gas is evolved determines the pump speed required. The species of gas evolved determines the type of pump. The outgassing characteristics must be known to determine needed precleaning steps

  20. Antioxidant activity of wild edible plants in the Black Sea Region of Turkey

    Directory of Open Access Journals (Sweden)

    Özen, Tevfik

    2010-03-01

    Full Text Available The antioxidative activity of the 80% ethanol extract obtained from eleven commonly consumed wild edible plants was determined according to the phosphomolybdenum method, reducing power, metal chelating, superoxide anion and free radical scavenging activity and compared to standard compounds such as butylated hydroxyanisole (BHA, butylated hydroxytoluene (BHT and trolox. Total phenolic compounds, flavonoids, and anthocyanins in the extracts were also measured. Trachystemon orientalis, Vaccinium mrytillus, Rumex acetosella Polygonum amphibium, Beta vulgaris, and Similax Excelsa had the highest antioxidant capacities. Overall results showed that these plants can serve as good sources of bioactive polyphenols in the human diet and can be regarded as good candidates for nutritional supplement formulations due to their high concentrations of total phenolic compounds, flavonoids and anthocyanins as well as their strong antioxidant activity.La actividad antioxidante de extractos etanólicos al 80%, obtenidos de once plantas salvajes comúnmente consumidas, fue determinada por el método del fosfomolibdeno, poder reductor, actividad quelatante de metales, actividad captadora de aniones superóxidos y actividad captadora de radicales libres, y comparada con compuestos patrones tales como el butil hidroxianisol (BHA, butil hidroxitolueno (BHT y Trolox. El contenido de fenoles totales, flavonoides y antocianinas en el extracto fue también determinado. Trachystemon orientalis, Vaccinium mrytillus, Rumex acetosella Polygonum amphibium, Beta vulgaris, y Similax Excelsa tienen las capacidades antioxidantes más altas. En general, los resultados muestran que estas plantas pueden servir como una buena fuente de polifenoles bioactivos en la dieta humana, y pueden ser considerados como buenos candidatos para su uso como suplemento nutricional en formulaciones debido a su alta concentración en fenoles, flavonoides y antocinainas y a su fuerte actividad

  1. Inhibitory Effect of Black and Red Pepper and Thyme Extracts and Essential Oils on Enterohemorrhagic Escherichia coli and DNase Activity of Staphylococcus aureus

    Science.gov (United States)

    Zarringhalam, Maryam; Zaringhalam, Jalal; Shadnoush, Mehdi; Safaeyan, Firouzeh; Tekieh, Elaheh

    2013-01-01

    In this study, extracts and essential oils of Black and Red pepper and Thyme were tested for antibacterial activity against Escherichia coli O157: H7 and Staphylococcus aureus. Black and Red pepper and Thyme were provided from Iranian agricultural researches center. 2 g of each plant powder was added to 10 cc ethanol 96°. After 24 h, the crude extract was separated as an alcoholic extract and concentrated by distillation method. Plants were examined for determining their major component and essential oils were separated. Phytochemical analyses were done for detection of some effective substances in extracts. The antibacterial activity against Escherichia coli O157: H7 and Staphylococcus aureus was tested and the results showed that all extracts and essential oils were effective and essential oils were more active. The extracts and oils that showed antimicrobial activity were later tested to determine the Minimum Inhibitory Dilution (MID) for those bacteria. They were also effective on the inhibition of DNase activity. This study was indicated that extracts and essential oils of Black and Red pepper and Thyme can play a significant role in inhibition of Escherichia coli O157: H7 and Staphylococcus aureus. PMID:24250643

  2. Chemistry and in vitro antioxidant activity of volatile oil and oleoresins of black pepper (Piper nigrum).

    Science.gov (United States)

    Kapoor, I P S; Singh, Bandana; Singh, Gurdip; De Heluani, Carola S; De Lampasona, M P; Catalan, Cesar A N

    2009-06-24

    Essential oil and oleoresins (ethanol and ethyl acetate) of Piper nigrum were extracted by using Clevenger and Soxhlet apparatus, respectively. GC-MS analysis of pepper essential oil showed the presence of 54 components representing about 96.6% of the total weight. beta-Caryophylline (29.9%) was found as the major component along with limonene (13.2%), beta-pinene (7.9%), sabinene (5.9%), and several other minor components. The major component of both ethanol and ethyl acetate oleoresins was found to contain piperine (63.9 and 39.0%), with many other components in lesser amounts. The antioxidant activities of essential oil and oleoresins were evaluated against mustard oil by peroxide, p-anisidine, and thiobarbituric acid. Both the oil and oleoresins showed strong antioxidant activity in comparison with butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT) but lower than that of propyl gallate (PG). In addition, their inhibitory action by FTC method, scavenging capacity by DPPH (2,2'-diphenyl-1-picrylhydrazyl radical), and reducing power were also determined, proving the strong antioxidant capacity of both the essential oil and oleoresins of pepper.

  3. The evaluation of geopolymer properties prepared by alkali activation of black coal ashes with high content of loss on ignition

    Directory of Open Access Journals (Sweden)

    Michalíková Františka

    2010-11-01

    Full Text Available The utilization of fly ashes in Slovakia is lower than in other countries and dumping of fly ashes prevails. The dumping changeschemical and phase composition of fly ashes and so it decreases possibilities for their utilization. Fly ashes are mainly used in buildingindustry, where the content of loss on ignition (LOI is limited due to standards. Black coal fly ashes produced in Slovakia have a highcontent of loss on ignition – more than 20 % - so they straight utilization in building industry is not possible. The current possibility fortheir utilization is in geopolymer synthesis. Products with 28-day compression strength of 35.7 MPa and 180-day compression strengthof 55.0 MPa were obtained by alkali activation of fly ashes with 23.25 % LOI with 8 wt% Na2O and their next hardening in temperatureof 80 °C during 6 hours. Products have a great frost-resistance and aggressive environments resistance (NaCl a H2SO4 solutions.

  4. Detection of calprotectin and apoptotic activity within the equine colon from horses with black walnut extract-induced laminitis.

    Science.gov (United States)

    Chiavaccini, Ludovica; Hassel, Diana M; Shoemaker, Megan L; Charles, Joseph B; Belknap, James K; Ehrhart, E J

    2011-12-15

    The black walnut extract (BWE) model of equine laminitis is associated with a systemic inflammatory response manifest by increased expression of inflammatory cytokines in the lungs and liver as well as the laminae. The specific role of the gastrointestinal tract in development of this response is unclear and is of utmost importance, as gastrointestinal disease and laminitis are intimately related. We investigated calprotectin expression and epithelial and endothelial apoptosis in the colon of horses exposed to orally administered BWE. Sections of colon from 19 horses including 7 controls not exposed to BWE, 6 horses at the developmental time-point of leukopenia (DTP) and 6 at the onset of Obel grade 1 laminitis (LAM) after BWE-administration were histologically examined. Immunohistochemical evaluation for calprotectin expression with MAC 387 antibody was performed along with assessment of epithelial and endothelial apoptosis with caspase-3 active antibody. Calprotectin expression and percentage of apoptotic cells were compared between controls and the two treatment groups and presence of a correlation between calprotectin expression and apoptosis was evaluated. Histological findings from BWE-treated horses included eosinophil and lymphocyte epitheliotropism. The DTP group had a higher (plaminitis. Copyright © 2011 Elsevier B.V. All rights reserved.

  5. Anti-Amyloid Aggregation Activity of Black Sesame Pigment: Toward a Novel Alzheimer’s Disease Preventive Agent

    Directory of Open Access Journals (Sweden)

    Lucia Panzella

    2018-03-01

    Full Text Available Black sesame pigment (BSP represents a low cost, easily accessible material of plant origin exhibiting marked antioxidant and heavy metal-binding properties with potential as a food supplement. We report herein the inhibitory properties of the potentially bioaccessible fraction of BSP following simulated gastrointestinal digestion against key enzymes involved in Alzheimer’s disease (AD. HPLC analysis indicated that BSP is transformed under the pH conditions mimicking the intestinal environment and the most abundant of the released compounds was identified as vanillic acid. More than 80% inhibition of acetylcholinesterase-induced aggregation of the β-amyloid Aβ1-40 was observed in the presence of the potentially bioaccessible fraction of BSP, which also efficiently inhibited self-induced Aβ1-42 aggregation and β-secretase (BACE-1 activity, even at high dilution. These properties open new perspectives toward the use of BSP as an ingredient of functional food or as a food supplement for the prevention of AD.

  6. Cryptoendolithic Antarctic Black Fungus Cryomyces antarcticus Irradiated with Accelerated Helium Ions: Survival and Metabolic Activity, DNA and Ultrastructural Damage

    Directory of Open Access Journals (Sweden)

    Claudia Pacelli

    2017-10-01

    Full Text Available Space represents an extremely harmful environment for life and survival of terrestrial organisms. In the last decades, a considerable deal of attention was paid to characterize the effects of spaceflight relevant radiation on various model organisms. The aim of this study was to test the survival capacity of the cryptoendolithic black fungus Cryomyces antarcticus CCFEE 515 to space relevant radiation, to outline its endurance to space conditions. In the frame of an international radiation campaign, dried fungal colonies were irradiated with accelerated Helium ion (150 MeV/n, LET 2.2 keV/μm, up to a final dose of 1,000 Gy, as one of the space-relevant ionizing radiation. Results showed that the fungus maintained high survival and metabolic activity with no detectable DNA and ultrastructural damage, even after the highest dose irradiation. These data give clues on the resistance of life toward space ionizing radiation in general and on the resistance and responses of eukaryotic cells in particular.

  7. The State of Black America, 1978.

    Science.gov (United States)

    Anderson, Bernard E.; And Others

    In this report seven scholars (Bernard Anderson, James Dumpson, Charles Hamilton, Robert Hill, Vernon Jordan, Jr., Bernard Watson and Robert Weaver) appraise the social, economic, political, and educational status of blacks and black families. Minimal gains and poor prospects for black female heads of families in the current recession job market…

  8. Active-involvement principle in dental health education

    DEFF Research Database (Denmark)

    Schou, L

    1985-01-01

    A basic problem in dental health education (DHE) is that the effect usually disappears shortly after the termination of a program. The purpose of the present study was to obtain long-term effect of a DHE-program by emphasizing the active involvement of the participants. The sample comprised...... an experimental and a control group, each of 68 unskilled workers, aged 18-64. Active participation was obtained by various means: Teaching was carried out in pre-existing peer groups, the participants' own goals and needs were included, the traditional dentist-patient barriers were excluded, the traditional...... of active involvement of the participants in the DHE-program....

  9. Resveratrol and black tea polyphenol combination synergistically suppress mouse skin tumors growth by inhibition of activated MAPKs and p53.

    Directory of Open Access Journals (Sweden)

    Jasmine George

    Full Text Available Cancer chemoprevention by natural dietary agents has received considerable importance because of their cost-effectiveness and wide safety margin. However, single agent intervention has failed to bring the expected outcome in clinical trials; therefore, combinations of chemopreventive agents are gaining increasing popularity. The present study aims to evaluate the combinatorial chemopreventive effects of resveratrol and black tea polyphenol (BTP in suppressing two-stage mouse skin carcinogenesis induced by DMBA and TPA. Resveratrol/BTP alone treatment decreased tumor incidence by ∼67% and ∼75%, while combination of both at low doses synergistically decreased tumor incidence even more significantly by ∼89% (p<0.01. This combination also significantly regressed tumor volume and number (p<0.01. Mechanistic studies revealed that this combinatorial inhibition was associated with decreased expression of phosphorylated mitogen-activated protein kinase family proteins: extracellular signal-regulated kinase 1/2, c-Jun N-terminal kinase 1/2, p38 and increased in total p53 and phospho p53 (Ser 15 in skin tissue/tumor. Treatment with combinations of resveratrol and BTP also decreased expression of proliferating cell nuclear antigen in mouse skin tissues/tumors than their solitary treatments as determined by immunohistochemistry. In addition, histological and cell death analysis also confirmed that resveratrol and BTP treatment together inhibits cellular proliferation and markedly induces apoptosis. Taken together, our results for the first time lucidly illustrate that resveratrol and BTP in combination impart better suppressive activity than either of these agents alone and accentuate that development of novel combination therapies/chemoprevention using dietary agents will be more beneficial against cancer. This promising combination should be examined in therapeutic trials of skin and possibly other cancers.

  10. Combined use of PAH levels and EROD activities in the determination of PAH pollution in flathead mullet (Mugil cephalus) caught from the West Black Sea coast of Turkey.

    Science.gov (United States)

    Bozcaarmutlu, Azra; Sapmaz, Canan; Kaleli, Gizem; Turna, Sema; Yenisoy-Karakaş, Serpil

    2015-02-01

    The aim of this study was to determine the extent of polycyclic aromatic hydrocarbon (PAH) pollution by measuring PAH levels and 7-ethoxyresorufin-O-deethylase (EROD) activities in flathead mullet (Mugil cephalus) samples caught from the West Black Sea coast of Turkey. The fish samples were caught in August 2008-2011. The levels of 13 PAHs were measured by high-performance liquid chromatography (HPLC) in the liver of fish. Most of the measured PAHs had three rings (low molecular weight). The frequencies of detection of PAHs were higher in fish samples caught from Zonguldak Harbour and Gülüç Stream Mouth than those from Sakarya River Mouth, Amasra and Kefken. EROD activities and cytochrome P4501A (CYP1A) protein level were also measured in the fish liver microsomes. Highly elevated EROD activities and CYP1A levels were measured in the mullet samples caught from Zonguldak Harbour and Gülüç Stream than those from Amasra and Kefken. The detection of PAHs in the liver of fish samples shows recent exposure to PAHs. The chemical analyses of PAHs and EROD activity results together reflected the extent of PAH pollution in the livers of fish caught from the West Black Sea coast of Turkey. The results indicate that Zonguldak Harbour is the most polluted site in the West Black Sea coast of Turkey.

  11. Black Cohosh

    Science.gov (United States)

    ... who have had hormone-sensitive conditions such as breast cancer or for pregnant women or nursing mothers. Black cohosh should not be confused with blue cohosh (Caulophyllum thalictroides) , which has different effects and may not be safe. Black cohosh has ...

  12. Increasing Physical Activity during the School Day through Physical Activity Classes: Implications for Physical Educators

    Science.gov (United States)

    Adkins, Megan; Bice, Matt; Bartee, Todd; Heelan, Kate

    2015-01-01

    Across the nation schools are adopting health and wellness policies, specifically physical activity (PA) initiatives that aid healthy long-term lifestyles. Interest has been generated about the inclusion of physical activity classes to complement existing physical education classes. Furthermore, discussion has evolved as to if additional…

  13. Antimicrobial activity of gallic acid against food-related Pseudomonas strains and its use as biocontrol tool to improve the shelf life of fresh black truffles.

    Science.gov (United States)

    Sorrentino, Elena; Succi, Mariantonietta; Tipaldi, Luca; Pannella, Gianfranco; Maiuro, Lucia; Sturchio, Marina; Coppola, Raffaele; Tremonte, Patrizio

    2018-02-02

    Refrigeration alone or in combination with other technologies represents the main tool used in the last decades to preserve the freshness of black truffles. This is principally due to the delicateness and vulnerability of this edible hypogeous fungus, so that other invasive preservation practices cannot be adopted. However, the proliferation of some microbial species during the cold storage still represents an unsolved problem. Pseudomonads are among the main spoiler bacteria responsible for the deterioration of refrigerated black truffles. Their growth ability at low temperatures requires the use of additional hurdles to prolong the shelf-life of truffles without altering their major features. The use of natural compounds may represent an alternative system for the biocontrol of this kind of product. Specifically, gallic acid (GA) is a phenolic acid naturally present in different foods, whose effectiveness was in vitro demonstrated against Pseudomonas spp. In our study, we reported the antimicrobial activity expressed by GA not only in vitro, using as target bacteria Pseudomonas putida DSMZ 291 T , P. fluorescens DSMZ 50090 T , P. fragi DSMZ 3456 T and Pseudomonas spp. P30-4, previously isolated from black truffles, but also in situ on fresh black truffles stored at 4°C for 28days. Our results showed Minimum Inhibitory Concentrations (MIC) of 2.5mg/mL GA for all tested strains, except for P. fluorescens DSMZ 50090 T , having a MIC corresponding to 5mg/mL GA. The Minimum Bactericidal Concentration (MBC) was 10mg/mL for all strains. The analysis of kinetic parameters showed that the survival declined passing from 2.5 to 10mg/mL GA concentrations, with P. fluorescens confirmed to be the most resistant strain. Moreover, images obtained from Scanning Electron Microscopy revealed that Pseudomonas cells were strongly injured by the treatment with GA at 2.5mg/mL concentration, displaying visible pores on the cellular surfaces, absence of flagella and lysis with loss of

  14. Anti-biofilm, anti-hemolysis, and anti-virulence activities of black pepper, cananga, myrrh oils, and nerolidol against Staphylococcus aureus.

    Science.gov (United States)

    Lee, Kayeon; Lee, Jin-Hyung; Kim, Soon-Il; Cho, Moo Hwan; Lee, Jintae

    2014-11-01

    The long-term usage of antibiotics has resulted in the evolution of multidrug-resistant bacteria. Unlike antibiotics, anti-virulence approaches target bacterial virulence without affecting cell viability, which may be less prone to develop drug resistance. Staphylococcus aureus is a major human pathogen that produces diverse virulence factors, such as α-toxin, which is hemolytic. Also, biofilm formation of S. aureus is one of the mechanisms of its drug resistance. In this study, anti-biofilm screening of 83 essential oils showed that black pepper, cananga, and myrrh oils and their common constituent cis-nerolidol at 0.01 % markedly inhibited S. aureus biofilm formation. Furthermore, the three essential oils and cis-nerolidol at below 0.005 % almost abolished the hemolytic activity of S. aureus. Transcriptional analyses showed that black pepper oil down-regulated the expressions of the α-toxin gene (hla), the nuclease genes, and the regulatory genes. In addition, black pepper, cananga, and myrrh oils and cis-nerolidol attenuated S. aureus virulence in the nematode Caenorhabditis elegans. This study is one of the most extensive on anti-virulence screening using diverse essential oils and provides comprehensive data on the subject. This finding implies other beneficial effects of essential oils and suggests that black pepper, cananga, and myrrh oils have potential use as anti-virulence strategies against persistent S. aureus infections.

  15. Effect of a Sport Education Program on Motivation for Physical Education and Leisure-Time Physical Activity

    Science.gov (United States)

    Wallhead, Tristan L.; Garn, Alex C.; Vidoni, Carla

    2014-01-01

    Purpose: The purpose of this study was to examine the effect of a high school sport education curriculum program on students' motivation for physical education and leisure-time physical activity. Method: Participants were 568 high school students enrolled in the required physical education programs at 2 schools, 1 taught using sport education and…

  16. Black Sea aerosols

    International Nuclear Information System (INIS)

    Hacisalihoglu, G.; Eliyakut, F.; Anwari, M.A.; Ataman, O.Y.; Balkas, T.I.; Tuncel, G.; Olmez, I.

    1991-01-01

    Shipboard, high volume air particulate samples were collected from the Black Sea atmosphere and analyzed by instrumental neutron activation analysis, atomic absorption spectrophotometry and ion chromatography for about 40 elements and ions. Concentrations of elements in the eastern and western parts of the Black Sea are different at the 95% confidence level, with lower concentrations in the eastern Black Sea. Back-trajectories and concentrations of elements in trajectory groups show that Europe accounts for more than 70% of the anthropogenic elements in the atmosphere. The average sulfate concentration was 7 μg/m 3 , which is comparable with rural sulfate levels in western Europe. Fluxes of elements from the atmosphere to the Black Sea are in good agreement with the results of similar flux calculations for other regions

  17. Cooperative activity and its potential for learning in tertiary education

    Directory of Open Access Journals (Sweden)

    Cirila Peklaj

    2007-01-01

    Full Text Available A learning situation can be structured in different ways, as an individual, competitive, or cooperative activity. Each of these structures can be used for different purposes and can lead to different learning outcomes. This paper focuses on cooperative activity and its potential for learning in tertiary education. After defining cooperative activity (or, in a broader sense, learning in interaction and introducing the CAMS theoretical framework to analyse cooperative activity, the main discussion focuses on the theoretical reasons for the usefulness of group learning and on the research of effects of cooperative learning on cognitive (metacognitive, affective-motivational and social processes in university students. The key elements that should be established for successful cooperation are also discussed. At the end, a new direction in using cooperative activity in learning—computer supported collaborative learning (CSCL, which emerged with rapid technology development in the last two decades—is presented and discussed.

  18. Activity pattern of the orphaned Asiatic Black Bear Ursus thibetanus (Mammalia: Carnivora: Ursidae) cubs during rehabilitation processes.

    OpenAIRE

    S. Dasgupta; P. Choudhury; B.C. Bhattacharjee

    2014-01-01

    Five Asiatic Black Bear Ursus thibetanus cubs aged between 6.5-15 months were studied for five months using instantaneous scan sampling (n=3049 scans) while they were undergoing acclimatization in the rehabilitation areas in Pakke Tiger Reserve, Arunachal Pradesh, India. During the course of the study, feeding, moving, climbing, resting and playing activities were recorded in three consecutive time periods, representing three phases of acclimatization. The frequency of climbing and moving i...

  19. Messages for Educational Leadership: The Constance E. Clayton Lectures 1998-2007. Black Studies and Critical Thinking. Volume 34

    Science.gov (United States)

    Slaughter-Defoe, Diana T., Ed.

    2012-01-01

    Urban education is an interdisciplinary field, characterized by introducing many perspectives to research pertaining to educational policy and to the practice of educating youth whose lives unfold in densely populated urban metropolitan areas. This book celebrates Constance Clayton's eleven-year tenure as superintendent of the School District of…

  20. In vitro pancreatic lipase, cholesterol esterase and cholesterol micellization inhibitory activity of Sri Lankan low grown orthodox Orange Pekoe grade black tea (Camellia sinensis L.

    Directory of Open Access Journals (Sweden)

    Wanigasekera Daya Ratnasooriya

    2015-07-01

    Full Text Available Objective: To access the pancreatic lipase, cholesterol esterase and cholesterol micellization inhibitory activities of Sri Lankan low grown orthodox Orange Pekoe grade black tea made from uppermost tender leaves and unopened buds of Camellia sinensis L. Methods: Black tea brew (BTB was made according to International Organization for Standardization 3103 specifications and concentrations of BTB tested were 37.5, 75.0, 150.0, 300.0 and 600.0 µg/mL for antilipase and anti-cholesterol esterase assays and 0.25, 0.50 and 1.00 µg/mL for cholesterol micellization inhibitory assay. Results: The results showed that BTB of Sri Lankan low grown orthodox Orange Pekoe grade black tea has marked and dose-dependent (r 2 = 0.95 cholesterol micellization inhibitory activity in vitro comparable to epigallocatechin gallate, the reference drug used. In contrast, BTB had only mild but dose-dependent (r 2 = 0.94 inhibitory activity against pancreatic lipase and weak inhibitory effect (up to 13.17% on pancreatic cholesterol esterase. Conclusions: It is concluded that consumption of BTB of Sri Lankan low grown orthodox Orange Pekoe grade tea as a beverage may be a useful strategy in the management of hyperlipidaemia.

  1. The Mercury Transit 2016: educational activities from CESAR

    Science.gov (United States)

    Pérez-Ayúcar, Miguel; Breitfelner, Michel

    2017-04-01

    A transit of Mercury in front of the solar disk as seen from Earth is a rare astronomical event which occurs only about every 13-14 times per century. Although its historic scientific importance, e.g. to measure the distances in the solar system, has diminished since humanity roams our solar system with robotic spacecrafts, a Mercury Transit remains a spectacular astronomical event that is used very effectively to engage general public and students to Science and Space in general. The educational project CESAR (Cooperation through Education in Science and Astronomy Research) , working upon previous experience (Venus transit 2012, live Sun transmissions ..), prepared a dual observation of the transit from two separate locations: the CESAR Solar Observatory at ESAC (European Space Astronomy Center), Madrid, Spain, and a twin portable telescope set-up in Cerro Paranal, Chile, achieving a ground baseline parallax of 10.000km. CESAR organized an educational and outreach event in collaboration with several Spanish schools/universities, the ESA Education and Communications offices, the Teide observatory and the ESA projects Bepi Colombo and Solar Orbiter. The driving activity was a continuous 10h interactive Google hangout that connected students in Spain (Ciudad de las Artes y las Ciencias, CAC in Valencia), students in observatories in Chile, the remote observing teams, and scientists at ESAC. Live images were transmitted via a specific web in two bands (h-alpha and visible). Experts in the fields of Solar and Planetary Physics gave presentations related to the Sun and Mercury. Questions and answers sessions were performed so that world-wide audience could interact with the scientists and engineers. In this paper we explain how this public educational and outreach event was created, what activities it comprised, and the follow up activities.

  2. Does Education Matter for Entrepreneurship Activities? The Case of Kosovo

    Directory of Open Access Journals (Sweden)

    Gazmend Qorraj

    2017-06-01

    Full Text Available Based on the innovation and technology progress, it is expected that in the near future there will be an increasing trend of jobs that require high qualifi- cations. There is a debate whether education is significantly increasing probabilities of earning higher wage for employees or whether higher education will increase probabilities of entrepreneurship performance. In post-conflict countries, entrepreneurial education does not have a significant impact on entrepreneurship performance, especially in Kosovo due to different factors. First, due to the structure of enterprises, as most of the enterprises are involved on trade activities; second, due to the level of macroeconomic development and, third, due to the lack of involvement of enterprises in EU knowledge and innovative projects, such as Erasmus and Horizon 2020. By using a probit model this paper analyses several factors, such as level of education, gender, marital status and health, for the case of Kosovo. Finally, it confirms empirically that currently the level of education does not seem to play an important role on entrepreneurship performance compared to other factors, such as gender and marital status.

  3. How Do Tertiary Education Students Perceive Co-Curricular Activities under the New Education System?

    Science.gov (United States)

    Wong, Helen; Leung, Simon

    2018-01-01

    Co-curricular activities in general are believed to be useful for students' development, such as improvement in academic performance, higher retention rate, enhancement of social and competency skills, and assistance of youth development and employment. With the expansion of the education sector and the implementation of a new 3-3-4 education…

  4. Physical Activity, Emotional and Behavioural Problems, Maternal Education and Self-Reported Educational Performance of Adolescents

    Science.gov (United States)

    Kantomaa, M. T.; Tammelin, T. H.; Demakakos, P.; Ebeling, H. E.; Taanila, A. M.

    2010-01-01

    This study examined whether physical activity, mental health and socio-economic position were associated with the overall academic performance and future educational plans of adolescents aged 15-16 years. We used a sample of 7002 boys and girls from the Northern Finland Birth Cohort 1986. Data were collected by a postal enquiry in 2001-02.…

  5. Promoting Physical Activity among International Students in Higher Education: A Peer-Education Approach

    Science.gov (United States)

    Yan, Zi; Cardinal, Bradley J.

    2013-01-01

    International students have become an important and growing group in U.S. higher education. Although many universities offer various types of support to international students, little attention is given to preventive health services or health promotion efforts, such as the promotion of physical activity. This article outlines a theory-based…

  6. The active learning educational organisation: a case study of innovation in electrical engineering education

    NARCIS (Netherlands)

    Vos, Henk

    2004-01-01

    The introduction of active learning in engineering education is often started by enthusiastic teachers or change agents. They usually encounter resistance from stakeholders such as colleagues, department boards or students. For a successful introduction these stakeholders all have to learn what

  7. Educational Leaders' Reports of Priorities and Activities in Selected Areas of Teacher Education Reform.

    Science.gov (United States)

    Guyton, Edith; Antonelli, George

    1987-01-01

    A survey was made of members of the American Association of Colleges for Teacher Education regarding curriculum and program structure changes in response to major reform reports. The 441 respondents rated the priority placed on and the extent to which 17 reform activities were being conducted at their institutions. (Author/MT)

  8. Using Cultural-Historical Activity Theory to Design and Evaluate an Educational Game in Science Education

    Science.gov (United States)

    Lazarou, D.

    2011-01-01

    The aim of this paper is to describe a methodology for using Cultural-Historical Activity Theory (CHAT) at the initial stages of the design process of an educational game, by exploring how the theory can be used as a framework for producing not only usable but also useful computer tools. The research also aimed to investigate how the theory could…

  9. Supermassive black holes with high accretion rates in active galactic nuclei. I. First results from a new reverberation mapping campaign

    International Nuclear Information System (INIS)

    Du, Pu; Hu, Chen; Qiu, Jie; Li, Yan-Rong; Wang, Jian-Min; Lu, Kai-Xing; Wang, Fang; Bai, Jin-Ming; Kaspi, Shai; Netzer, Hagai

    2014-01-01

    We report first results from a large project to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). Such objects may be different from other AGNs in being powered by slim accretion disks and showing saturated accretion luminosities, but both are not yet fully understood. The results are part of a large reverberation mapping (RM) campaign using the 2.4 m Shangri-La telescope at the Yunnan Observatory in China. The goals are to investigate the gas distribution near the BH and the properties of the central accretion disks, to measure BH mass and Eddington ratios, and to test the feasibility of using such objects as a new type of cosmological candles. The paper presents results for three objects, Mrk 335, Mrk 142, and IRAS F12397+3333, with Hβ time lags relative to the 5100 Å continuum of 10.6 −2.9 +1.7 , 6.4 −2.2 +0.8 and 11.4 −1.9 +2.9 days, respectively. The corresponding BH masses are (8.3 −3.2 +2.6 )×10 6 M ⊙ , (3.4 −1.2 +0.5 )×10 6 M ⊙ , and (7.5 −4.1 +4.3 )×10 6 M ⊙ , and the lower limits on the Eddington ratios are 0.6, 2.3, and 4.6 for the minimal radiative efficiency of 0.038. Mrk 142 and IRAS F12397+333 (extinction corrected) clearly deviate from the currently known relation between Hβ lag and continuum luminosity. The three Eddington ratios are beyond the values expected in thin accretion disks and two of them are the largest measured so far among objects with RM-based BH masses. We briefly discuss implications for slim disks, BH growth, and cosmology.

  10. Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. I. First Results from a New Reverberation Mapping Campaign

    Science.gov (United States)

    Du, Pu; Hu, Chen; Lu, Kai-Xing; Wang, Fang; Qiu, Jie; Li, Yan-Rong; Bai, Jin-Ming; Kaspi, Shai; Netzer, Hagai; Wang, Jian-Min; SEAMBH Collaboration

    2014-02-01

    We report first results from a large project to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). Such objects may be different from other AGNs in being powered by slim accretion disks and showing saturated accretion luminosities, but both are not yet fully understood. The results are part of a large reverberation mapping (RM) campaign using the 2.4 m Shangri-La telescope at the Yunnan Observatory in China. The goals are to investigate the gas distribution near the BH and the properties of the central accretion disks, to measure BH mass and Eddington ratios, and to test the feasibility of using such objects as a new type of cosmological candles. The paper presents results for three objects, Mrk 335, Mrk 142, and IRAS F12397+3333, with Hβ time lags relative to the 5100 Å continuum of 10.6^{+1.7}_{-2.9}, 6.4^{+0.8}_{-2.2} and 11.4^{+2.9}_{-1.9} days, respectively. The corresponding BH masses are (8.3_{-3.2}^{+2.6})\\times 10^6\\,M_{\\odot }, (3.4_{-1.2}^{+0.5})\\times 10^6\\,M_{\\odot }, and (7.5_{-4.1}^{+4.3})\\times 10^6\\,M_{\\odot }, and the lower limits on the Eddington ratios are 0.6, 2.3, and 4.6 for the minimal radiative efficiency of 0.038. Mrk 142 and IRAS F12397+333 (extinction corrected) clearly deviate from the currently known relation between Hβ lag and continuum luminosity. The three Eddington ratios are beyond the values expected in thin accretion disks and two of them are the largest measured so far among objects with RM-based BH masses. We briefly discuss implications for slim disks, BH growth, and cosmology.

  11. Educational and training activities in personal dosimetry in Greece

    International Nuclear Information System (INIS)

    An individual monitoring programme is one of the main components of any radiation protection programme since it constitutes the mean for assessing and thus optimising the doses of occupationally exposed workers. The Greek Atomic Energy Commission (GAEC) is the competent authority for radiation protection and nuclear safety in Greece. GAEC's educational and training activities in the field of occupational radiation protection at the national and regional (Eastern Europe) level are presented, along with the relevant activities of the Univ. of Ioannina in the region of North-West Greece, as an example of a local education and training programme. The curricula of two postgraduate courses addressed to qualified experts and medical physics experts and mainly the modules dedicated to individual monitoring are discussed as well. (authors)

  12. Quality of Health Care Activity in Educational Institutions: Conceptual Aspect

    Directory of Open Access Journals (Sweden)

    N. V. Tretyakova

    2013-01-01

    Full Text Available The paper deals with one of the priority tasks of Russian educational system – developing the health responsibility. The recent health deterioration trend among children and adolescents calls for the complex health care measures, equally affecting the learning outcomes. The authors argue that there is a need for proper definition and specification of the key term of health care quality. However, the analysis of the available scientific and documentary recourses demonstrates the absence of such unified definition. The authors describe the existing approaches to defining the health care quality, and examine structural components of the health care activity, their interrelations and interdependence. In authors’ opinion, the synthesis of the available research materials provides the basis for further studies in the theory and practice of quality management activities regarding the health protection of children, adolescents and young adults in educational institutions. 

  13. An Educational Program of Engineering Ethics and Its Dissemination Activity

    Science.gov (United States)

    Muramatsu, Ryujiro; Nagashima, Shigeo

    Education on ethics for corporate employees, especially for engineers, seems to become increasingly important for most of companies in Japan, because some affairs or scandals caused by ethical problem in many companies were likely to subject them to operational disadvantages. Even in Hitachi, Ltd., we have worked on education of engineering ethics for two years. In this paper, we describe some activities of committees on engineering ethics, an e-learning training course which is usable on our intranet e-learning system, and a short-term in-house training course operated regularly in our training institute. And we also refer to its dissemination activities to employees in each division and some subsidiaries.

  14. Black Carbon, Metal Concentrations and Lead Isotopes Ratios in Aerosols as Tracers of Human and Natural Activities in Northern Vietnam

    Science.gov (United States)

    Guinot, B. P.

    2015-12-01

    Atmospheric brown clouds (ABC) observed as widespread layers of brownish haze are regional scale plumes of air pollutants with a hot spot of emission located in East Asia. ABC are mainly composed of aerosol particles such as Black Carbon (BC) emitted to the atmosphere during biomass burning and fossil fuels combustion. The atmospheric lifetime of BC ranges from a few days in wet season up to one month in dry season. The use of stable lead isotopes and 21 elements as tracers of air pollution was applied to identify and characterized the main sources of anthropogenic activities in Asian region. Aerosol samples from Haiphong (North Vietnam) were collected by a high volume sampler for a period of one year from October 2012 to October 2013. Vietnam's 207Pb/206Pb ratios were almost identical to those found for China. Ratios of 207Pb/206Pb ranged from 0.837 to 0.871 which agrees with values previously reported for the last 10 years in China (0.841 - 0.879). No significant variation in isotope ratio was observed during the sampling period, which suggests that there was no large seasonal variation in the isotope ratios of airborne lead. Trajectory analysis showed that almost two third of the air masses originated from East Northeast which implies that China was a major source of lead in atmosphere. Enrichment factor calculations indicated a large influence of coal activity (EF(Al) As = 1982 ± 796, EF(Al) Cd = 972 ± 659, EF(Al) Sb = 1358 ± 930) but the difference between combustion and mining exploitation could not be evidenced. Significant correlations were found between two others groups of elements: As, Cu, Ni, Zn, and Al, Fe K, Co. Wind dilution was effective on metals concentration variation. During the cold and dry season (winter) ambient concentrations were high and variable, during the warm and wet season (summer) concentrations were stable and low. Taken together, these factors also identified industrial and lithogenic activities in the region.

  15. Azabu animal-assisted therapy and activity educational program

    OpenAIRE

    太田, 光明

    2006-01-01

    The Azabu AAT (animal assisted therapy) and AAA (animal assisted activity), educational program has been established for the postgraduate students since April 1, 2002, which is the first endeavor at the universities of the world and the president of IAHAIO (International Associate of Human-Animal Interaction organizations). The program has been developed by Dr. Dennis C. Turner who is the visiting professor at Azabu University. This program is not only admitted as a national license for the A...

  16. TEACHERS, STUDENTS AND EXTRACURRICULAR ACTIVITIES IN PRIMARY EDUCATION

    OpenAIRE

    Ankica Antovska; Borče Kostov

    2016-01-01

    In the scientific public, since long ago, there has been an interest in studying leisure time. Leisure time is a central issue of modern civilization, integral part of the structure of modern society and a significant factor for a person’s development. The goal of this research is to study the modern concept of and the benefits from the introduction of leisure (extracurricular) activities in the primary education process. Certain investigations show that teachers, through extracurricular acti...

  17. Storytelling: a care technology in continuing education for active ageing.

    Science.gov (United States)

    Costa, Nadia Pinheiro da; Polaro, Sandra Helena Isse; Vahl, Eloá Aparecida Caliari; Gonçalves, Lucia Hisako Takase

    2016-01-01

    assessing relevance and effectiveness of care/educational technology in the form of "storytelling" as a strategy in the cultivation of active ageing (AA) for elderly users of a Basic Health Unit (BHU), from the Amazon region. convergent care research (CCR) held in a BHU in Belém, state of Pará, with eight elderly ladies for testing this technology. An active ageing assessment questionnaire and WHOQOL-BREF - quality of life assessment were applied. After training with a view to continuing education, elderly ladies told stories for an audience that addressed the question: "What did you learn from it for your life?" tThe popular stories elicited reactions from which the following categories emerged: solidarity; respect for the other; imagination, dreams, hopes and culture of the Amazonian. This practice had a positive result, producing changes in the quality of life of the elderly, particularly in the psychological domain. "storytelling" proved to be an innovative technology, a relevant and effective resource in health education, especially for active ageing.

  18. Solar Eclipse Education and Outreach Activities at APSU

    Science.gov (United States)

    Smith, J. Allyn; Buckner, Spencer L.; Adams, Mitzi; Meisch, Karen; Sudbrink, Don; Wright, Amy; Adams, Angela; Fagan, Ben

    2018-01-01

    The path of totality for the 21 August 2017 total solar eclipse passed directly over the APSU campus in north-central Tennessee. We discuss our public outreach and education efforts, both on campus and in the community, and present results and lessons learned from this event. We reached nearly 20,000 people via our efforts and hosted nearly 3000 viewers on campus on eclipse day. We also present our science activities and early results from those. On the whole, this event could be viewed as a large success for the university and the region, and the experiences will guide us in our efforts as we plan future eclipse activities.

  19. TEACHERS, STUDENTS AND EXTRACURRICULAR ACTIVITIES IN PRIMARY EDUCATION

    Directory of Open Access Journals (Sweden)

    Ankica Antovska

    2016-06-01

    Full Text Available In the scientific public, since long ago, there has been an interest in studying leisure time. Leisure time is a central issue of modern civilization, integral part of the structure of modern society and a significant factor for a person’s development. The goal of this research is to study the modern concept of and the benefits from the introduction of leisure (extracurricular activities in the primary education process. Certain investigations show that teachers, through extracurricular activities, can have a significant role in building and improving the talents of students. From the answers received in the enquiry it can be seen that both teachers and students have different attitudes and interests regarding extracurricular activities. The school has still the best position and the hope for developing students’ skills for the wide world of extracurricular activities.

  20. Activities for education at work for Medical students

    Directory of Open Access Journals (Sweden)

    Mirna León Acebo

    2015-12-01

    Full Text Available Background: the growing demands of a health professional that combines study and work, school with life and teaching-learning in primary and secondary health care constitute a current social problem for the country.Objective: to design a set of activities for education at work for first year medical students, from the family doctor's office, to contribute to health promotion and disease prevention in the community, favoring the integral formation of future doctors.Methods: the program was designed in work areas for the integrated teaching of biomedical disciplines for contributing to health promotion and disease prevention in "Dr. Gustavo Aldereguía Lima” polyclinic in Las Tunas. It carried out the historic and graphical analysis of the problem; students’,  professors’ and community members’ behaviors were observed; interviews and surveys were applied to explore knowledge and experiences of students and health professionals on the promotion of health education at work; workshops on critical opinion and collective elaboration were carried out and permitted to  socialize with other teachers and health professionals the proposed program for its redesign based on collective criticism.Results: the shortcomings caused by the fragmentation of subject contents and biomedical disciplines in education at work were characterized and the plan to help to eliminate the inadequacies that occur in education at work was designed by work areas and determined by the general guidelines for its implementation, without specific indications.Conclusions: the clinical method was applied its pedagogical dimension, allowing the coordination between the traditional methods of teaching-learning and for diagnosing, to contribute to eliminate the spontaneous character in the development of education in the workplace. The program of activities was designed by work areas.

  1. Did medieval trade activity and a viral etiology control the spatial extent and seasonal distribution of Black Death mortality?

    Science.gov (United States)

    Bossak, Brian H; Welford, Mark R

    2009-06-01

    Recent research into the world's greatest recorded epidemic, the Medieval Black Death (MBD), has cast doubt on Bubonic Plague as the etiologic agent. Prior research has recently culminated in outstanding advances in our understanding of the spatio-temporal pattern of MBD mortality, and a characterization of the incubation, latent, infectious, and symptomatic periods of the MBD. However, until now, several mysteries remained unexplained, including perhaps the biggest quandary of all: why did the MBD exhibit inverse seasonal peaks in mortality from diseases recorded in modern times, such as seasonal Influenza or the Indian Plague Epidemics of the early 1900 s? Although some have argued that climate changes likely explain the observed differences between modern clinical Bubonic Plague seasonality and MBD mortality accounts, we believe that another factor explains these dissimilarities. Here, we provide a synthetic hypothesis which builds upon previous theories developed in the last ten years or so. Our all-encompassing theory explains the causation, dissemination, and lethality of the MBD. We theorize that the MBD was a human-to-human transmitted virus, originating in East-Central Asia and not Africa (as some recent work has proposed), and that its areal extent during the first great epidemic wave of 1347-1350 was controlled hierarchically by proximity to trade routes. We also propose that the seasonality of medieval trade controlled the warm-weather mortality peaks witnessed during 1347-1350; during the time of greatest market activity, traders, fairgoers, and religious pilgrims served as unintentional vectors of a lethal virus with an incubation period of approximately 32 days, including a largely asymptomatic yet infectious period of roughly three weeks. We include a description of the rigorous research agenda that we have proposed in order to subject our theory to scientific scrutiny and a description of our plans to generate the first publicly available

  2. Black Tea

    Science.gov (United States)

    ... leaves of the same plant, has some different properties. Black tea is used for improving mental alertness ... that slow blood clotting include aspirin, clopidogrel (Plavix), diclofenac (Voltaren, Cataflam, others), ibuprofen (Advil, Motrin, others), naproxen ( ...

  3. The CERES Compendium of Career Education Infusion Activities. Grades 7-12. Revised.

    Science.gov (United States)

    Ceres Unified School District, CA.

    This compendium of career education activities serves as a guideline for teachers intending to infuse career education into their present activities. The eleven major subject areas are art, language arts, math, music, science, social studies, drivers education, English as a second language, health, physical education, and Spanish. Each subject…

  4. Activities of the Department of Energy in education. Annual status report, FY 1978

    Energy Technology Data Exchange (ETDEWEB)

    1979-01-01

    The Department of Energy's responsibilities in implementing President Carter's National Energy Plan include identifying the appropriate role of educational activities and institutions in that work. This study describes educational activities as they existed one year after the creation of the Department of Energy. Educational activities of educational institutions are included in the study, with the deliberate exception of the very substantial research activity conducted by universities. This report is intended to assist DOE program managers in the utilization of educational process in their operations and to provide guidance and informaion to the public about the Department's educational activities. For additional historical information, please consult DOE, IR-0008. (RWR)

  5. NASA Education Activities on the International Space Station: A National Laboratory for Inspiring, Engaging, Educating and Employing the Next Generation

    Science.gov (United States)

    Severance, Mark T.; Tate-Brown, Judy; McArthur, Cynthia L.

    2010-01-01

    The International Space Station (ISS) National Lab Education Project has been created as a part of the ISS National Lab effort mandated by the U.S. Congress The project seeks to expand ISS education of activities so that they reach a larger number of students with clear educational metrics of accomplishments. This paper provides an overview of several recent ISS educational payloads and activities. The expected outcomes of the project, consistent with those of the NASA Office of Education, are also described. NASA performs numerous education activities as part of its ISS program. These cover the gamut from formal to informal educational opportunities in grades Kindergarten to grade 12, Higher Education (undergraduate and graduate University) and informal educational venues (museums, science centers, exhibits). Projects within the portfolio consist of experiments performed onboard the ISS using onboard resources which require no upmass, payloads flown to ISS or integrated into ISS cargo vehicles, and ground based activities that follow or complement onboard activities. Examples include ground based control group experiments, flight or experiment following lesson plans, ground based activities involving direct interaction with ISS or ground based activities considering ISS resources in their solution set. These projects range from totally NASA funded to projects which partner with external entities. These external agencies can be: other federal, state or local government agencies, commercial entities, universities, professional organizations or non-profit organizations. This paper will describe the recent ISS education activities and discuss the approach, outcomes and metrics associated with the projects.

  6. IAEA Activities supporting education and training at research reactors

    International Nuclear Information System (INIS)

    Peld, N.D.; Ridikas, D.

    2013-01-01

    Full-text: Through the provision of neutrons for experiments and their historical association with universities, research reactors have played a prominent role in nuclear education and training of students, scientists and radiation workers. Today education and training remains the foremost application of research reactors, involving close to 160 facilities out of 246 operational. As part of its mandate to facilitate and expand the contribution of atomic energy to peace, health and prosperity throughout the world, the IAEA administers a number of activities intended to promote nuclear research and enable access to nuclear technology for peaceful purposes, one of which is the support of various education and training measures involving research reactors. In the last 5 years, education and training has formed one pillar for the creation of research reactor coalitions and networks to pool their resources and offer joint programmes, such as the on-going Group Fellowship Training Course. Conducted mainly through the Eastern European Research Reactor Initiative, this programme is a periodic sic week course for young scientists and engineers on nuclear techniques and administration jointly conducted at several member research reactor institutes. Organization of similar courses is under consideration in Latin America and the Asia-Pacific Region, also with support from the IAEA. Additionally, four research reactor institutes have begun offering practical education courses through virtual reactor experiments and operation known as the Internet Reactor Laboratory. Through little more than an internet connection and projection screens, university science departments can be connected regionally or bilaterally with the control room o a research reactor for various training activities. Finally, two publications are being prepared, namely Hands-On Training Courses Using Research Reactors and Accelerators, and Compendium on Education and training Based on Research Reactors. These

  7. Assessment of nutrition and physical activity education programmes in children.

    Science.gov (United States)

    Burke, V; Beilin, L J; Milligan, R; Thompson, C

    1995-03-01

    1. Studies in children relating blood lipids to the extent of atherosclerosis at post-mortem suggest a link between risk factors for cardiovascular disease in childhood and adult life. Tracking of blood pressure (BP) and cholesterol from childhood also supports this association. However, prospective studies have not yet established the outcome in children with increased levels of risk factors. 2. In a controlled trial in Perth, Western Australia, involving over 1000 10-12 year old children, fitness was improved by physical activity programmes which were associated with a greater fall in diastolic BP and triceps skinfolds in girls compared with controls. Sugar intake decreased in boys and fat intake fell in girls, mainly affecting participants in home nutrition programmes. 3. In higher risk children, identified by cluster analysis, major benefits were associated with the fitness and home nutrition programmes. Physical activity combined with involvement of the family in nutrition education is likely to be the most successful approach to modifying lifestyle in children, including those with higher levels of risk. 4. Undernutrition by too rigid restriction of fat intake must be avoided in young children who need calorie-dense foods. Undernutrition, in itself, may predispose to cardiovascular disease in later life. Programmes should aim to establish a prudent diet appropriate to the age of the child combined with physical activity. As regular activity and a healthy diet in adult life will reduce risks of cardiovascular disease it is likely that childhood education will establish lifestyle habits of potential long-term benefit.

  8. Retaining Black Teachers: An Examination of Black Female Teachers' Intentions to Remain in K-12 Classrooms

    Science.gov (United States)

    Farinde, Abiola A.; Allen, Ayana; Lewis, Chance W.

    2016-01-01

    Sixty years after "Brown v. Board of Education," retention trends indicate that there is a Black teacher shortage. Research shows that Black teachers' retention rates are often lower than the retention rates of White teachers. Black teachers report low salaries, lack of administrative support, and other school variables as reasons for…

  9. Black History, Inc! Investigating the Production of Black History through Walmart's Corporate Web Site

    Science.gov (United States)

    King, LaGarrett J.; Brown, Anthony L.

    2012-01-01

    Social and public sites are becoming a popular medium for intellectual consumption of Black history. Given the educational climate in which many students' exposure to Black history may come from outside of schools, the authors examine how Walmart's Black History Month Web site produced simplistic and safe narratives about African American history.

  10. Model of a black hole gas submitted to background gravitational field for active galaxy nuclei with application to calculating the continuous emission spectra of massless particles (Photons: neutrinos and gravitons)

    International Nuclear Information System (INIS)

    Pinto Neto, A.

    1987-01-01

    A new theoretical model for active galaxy nuclei which describes the continuous spectrum of rest massless particles (photons, neutrinos and gravitons) in the frequency range from radiofrequency to gamma ray frequency, is presented. The model consists in a black hole gas interacting with a background gravitacional field. The previously models proposed for active galaxy nuclei are exposured. Whole theoretical fundaments based on Einstein general relativity theory for defining and studying singularity properties (black holes) are also presented. (M.C.K.) [pt

  11. Preparing for the Educational Black Hole? Teachers' Learning in Two Pathways into Middle School Social Studies Teaching

    Science.gov (United States)

    Conklin, Hilary G.

    2010-01-01

    The author presents findings from the first phase of a longitudinal, comparative case study that investigates what teachers learn about intellectually demanding social studies teaching at the middle school level from two distinctive teacher education pathways: a specialized middle school teacher education program and a secondary social studies…

  12. Removal of Reactive Black 5 dye from Aqueous Solutions by Adsorption onto Activated Carbon of Grape Seed

    Directory of Open Access Journals (Sweden)

    Mojtaba Afsharnia

    2017-10-01

    Conclusion: The grape seed was found to have the highest level of efficiency in dye removal, and according to the availability of adsorbent and its low price, this method could be used as an applicable procedure for the removal of Black 5 dye from aqueous solutions.

  13. Experience modulates both aromatase activity and the sensitivity of agonistic behaviour to testosterone in black-headed gulls

    NARCIS (Netherlands)

    Ros, Albert F. H.; Franco, Aldina M. A.; Groothuis, Ton G. G.

    2009-01-01

    In young black-headed gulls (Larus ridibundus), exposure to testosterone increases the sensitivity of agonistic behaviour to a subsequent exposure to this hormone. The aim of this paper is twofold: to analyze whether social experience, gained during testosterone exposure, mediates this increase in

  14. Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships

    DEFF Research Database (Denmark)

    Vestergaard, Marianne; Peterson, B. M.

    2006-01-01

    We present four improved empirical relationships useful for estimating the central black hole mass in nearby AGNs and distant luminous quasars alike using either optical or UV single-epoch spectroscopy. These mass-scaling relationships between line widths and luminosity are based on recently...

  15. Enhanced activity of massive black holes by stellar capture assisted by a self-gravitating accretion disc

    Czech Academy of Sciences Publication Activity Database

    Karas, Vladimír; Šubr, L.

    2007-01-01

    Roč. 470, č. 1 (2007), s. 11-19 ISSN 0004-6361 R&D Projects: GA ČR GA205/07/0052; GA MŠk(CZ) LC06014 Institutional research plan: CEZ:AV0Z10030501 Keywords : black hole physics * accretion Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics Impact factor: 4.259, year: 2007

  16. Atypical features of hyperthyroidism in Blacks

    International Nuclear Information System (INIS)

    Kalk, W.J.

    1980-01-01

    Hyperthyroidism is reportedly uncommon in the indigenous populations of Africa. The presenting symptoms volunteered, the symptoms elicited by direct questioning, and the results of physical examination were therefore prospectively compared in 60 Black and 56 White patients with thyrotoxicosis attending a single thyroid clinic. Fewer Blacks than Whites volunteered information about weight loss, while more Blacks complained only of the presence of a goitre. A 'chance' diagnosis of hyperthyroidism was made more frequently in Blacks. Symptomatology elicited by direct questioning and findings on physical examination were generally similar in each group, except that Blacks presented more frequently with complicated disease (cardiac failure and overt myopathy) and infiltrative ophthalmopathy. The frequency with which hyperthyroidism presents 'atypically' in Black compared with White patients may reflect educational, socio-economic and cultural differences in the Black and White populations, and may partly explain the infrequency with which this disease is diagnosed in Blacks

  17. Effectiveness of a walking group intervention to promote physical activity and cardiovascular health in predominantly non-Hispanic black and Hispanic urban neighborhoods: findings from the walk your heart to health intervention.

    Science.gov (United States)

    Schulz, Amy J; Israel, Barbara A; Mentz, Graciela B; Bernal, Cristina; Caver, Deanna; DeMajo, Ricardo; Diaz, Gregoria; Gamboa, Cindy; Gaines, Causandra; Hoston, Bernadine; Opperman, Alisha; Reyes, Angela G; Rowe, Zachary; Sand, Sharon L; Woods, Sachiko

    2015-06-01

    The purpose of this study was to evaluate the effectiveness of the Walk Your Heart to Health (WYHH) intervention, one component of the multilevel Community Approaches to Cardiovascular Health: Pathways to Heart Health (CATCH:PATH) intervention designed to promote physical activity and reduce cardiovascular risk among non-Hispanic Black and Hispanic residents of Detroit, Michigan. The study was designed and implemented using a community-based participatory research approach that actively engaged community residents, health service providers and academic researchers. It was implemented between 2009 and 2012. WYHH was a 32-week community health promoter-facilitated walking group intervention. Groups met three times per week at community-based or faith-based organizations, and walked for 45 to 90 minutes (increasing over time). The study used a cluster randomized control design to evaluate effectiveness of WYHH, with participants randomized into intervention or lagged intervention (control) groups. Psychosocial, clinical, and anthropometric data were collected at baseline, 8, and 32 weeks, and pedometer step data tracked using uploadable peisoelectric pedometers. Participants in the intervention group increased steps significantly more during the initial 8-week intervention period, compared with the control group (β = 2004.5, p = .000). Increases in physical activity were associated with reductions in systolic blood pressure, fasting blood glucose, total cholesterol, waist circumference and body mass index at 8 weeks, and maintained at 32 weeks. The WYHH community health promoter-facilitated walking group intervention was associated with significant reductions in multiple indicators of cardiovascular risk among predominantly Hispanic and non-Hispanic Black participants in a low-to-moderate income urban community. Such interventions can contribute to reductions in racial, ethnic, and socioeconomic inequities in cardiovascular mortality. © 2015 Society for Public

  18. Supermassive black holes with high accretion rates in active galactic nuclei. I. First results from a new reverberation mapping campaign

    Energy Technology Data Exchange (ETDEWEB)

    Du, Pu; Hu, Chen; Qiu, Jie; Li, Yan-Rong; Wang, Jian-Min [Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049 (China); Lu, Kai-Xing [Astronomy Department, Beijing Normal University, Beijing 100875 (China); Wang, Fang; Bai, Jin-Ming [Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, Yunnan (China); Kaspi, Shai; Netzer, Hagai [Wise Observatory, School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978 (Israel); Collaboration: SEAMBH collaboration

    2014-02-10

    We report first results from a large project to measure black hole (BH) mass in high accretion rate active galactic nuclei (AGNs). Such objects may be different from other AGNs in being powered by slim accretion disks and showing saturated accretion luminosities, but both are not yet fully understood. The results are part of a large reverberation mapping (RM) campaign using the 2.4 m Shangri-La telescope at the Yunnan Observatory in China. The goals are to investigate the gas distribution near the BH and the properties of the central accretion disks, to measure BH mass and Eddington ratios, and to test the feasibility of using such objects as a new type of cosmological candles. The paper presents results for three objects, Mrk 335, Mrk 142, and IRAS F12397+3333, with Hβ time lags relative to the 5100 Å continuum of 10.6{sub −2.9}{sup +1.7}, 6.4{sub −2.2}{sup +0.8} and 11.4{sub −1.9}{sup +2.9} days, respectively. The corresponding BH masses are (8.3{sub −3.2}{sup +2.6})×10{sup 6} M{sub ⊙}, (3.4{sub −1.2}{sup +0.5})×10{sup 6} M{sub ⊙}, and (7.5{sub −4.1}{sup +4.3})×10{sup 6} M{sub ⊙}, and the lower limits on the Eddington ratios are 0.6, 2.3, and 4.6 for the minimal radiative efficiency of 0.038. Mrk 142 and IRAS F12397+333 (extinction corrected) clearly deviate from the currently known relation between Hβ lag and continuum luminosity. The three Eddington ratios are beyond the values expected in thin accretion disks and two of them are the largest measured so far among objects with RM-based BH masses. We briefly discuss implications for slim disks, BH growth, and cosmology.

  19. Dose-dependent induction of astrocyte activation and reactive astrogliosis in mouse brain following maternal exposure to carbon black nanoparticle.

    Science.gov (United States)

    Onoda, Atsuto; Takeda, Ken; Umezawa, Masakazu

    2017-02-02

    Recent studies indicate that maternal exposure to ambient ultrafine particles and nanoparticles has adverse effects of on the central nervous system. Quantitative dose-response data is required to better understand the developmental neurotoxicity of nanoparticles. The present study investigated dose-dependent effects of maternal exposure to carbon black nanoparticle (CB-NP) on astrocyte in the brains of mouse offspring. A CB-NP suspension (2.9, 15, or 73 μg/kg) was intranasally administered to pregnant ICR mice on gestational days 5 and 9. Cerebral cortex samples were collected from 6-week-old offspring and examined by Western blotting, immunostaining, microarray analysis, and quantitative reverse transcriptase-polymerase chain reaction. Placentae were collected from pregnant dams on gestational day 13 and examined by microarray analysis. Maternal exposure to CB-NP induced a dose-dependent increase in glial fibrillary acidic protein (GFAP) expression in the cerebral cortex; this increase was particularly observed in astrocytic end-feet attached to denatured perivascular macrophages. Moreover, maternal CB-NP exposure dose-dependently increased aquaporin-4 expression in the brain parenchyma region around blood vessels. The changes in the expression profiles of GFAP and Aqp4 in offspring after maternal CB-NP exposure were similar to those observed in mice of a more advanced age. The expression levels of mRNAs associated with angiogenesis, cell migration, proliferation, chemotaxis, and growth factor production were also altered in the cerebral cortex of offspring after maternal CB-NP exposure. Differentially expressed genes in placental tissues after CB-NP exposure did not populate any specific gene ontology category. Maternal CB-NP exposure induced long-term activation of astrocytes resulting in reactive astrogliosis in the brains of young mice. Our observations suggest a potentially increased risk of the onset of age-related neurodegenerative diseases by maternal

  20. Educational Activities and a Competency Framework for Meeting New Challenges in Higher Education

    Directory of Open Access Journals (Sweden)

    Bjørn Jæger

    2013-02-01

    Full Text Available In his article we explore how educational institutions are faced with changes in the modern global business environment, and how this leads to need for changes in curricula for business schools and information systems schools. Most of academia still uses a strict disciplinary model of education resulting in a high degree of specialization within each discipline while the modern business environments require knowledge workers who can address problems that cut across disciplines on an increasingly global scale. Research papers and governmental reports call for more emphasis on particularly three interdisciplinary topics; 1 competencies in globalization issues, 2 communication/working in team, and 3 information literacy. The disciplines of business and in particular information systems education have received much attention in this respect with several calls for change. How to bring about such a change is, however, still an open question. This paper proposes to address this issue in two ways; by suggesting two new educational activities and by proposing a new educational interdisciplinary competency framework to guide curriculum development when including interdisciplinary topics.