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Sample records for hero reactor

  1. Real Heroes.

    Denenberg, Dennis

    2001-01-01

    Presents stories taken from the book, "50 American Heroes Every Kid Should Meet," explaining that children need to learn about the value of real-life human accomplishments (versus those of athletes, television personalities, and rock stars). The heroes include Elizabeth Blackwell, first American woman doctor; George C. Marshall,…

  2. Hero Award

    2009-10-07

    This podcast is a lecture given by William H. Foege, MD, MPH when he was honored October 7, 2009 as the 2009 CDC Foundation Hero Award Recipient.  Created: 10/7/2009 by Centers for Disease Control and Prevention (CDC).   Date Released: 10/22/2009.

  3. Heroes in Asia

    Mortensen, Eva

    2014-01-01

    Connections between traditional heroes and new heroes may be found in the topographical contexts where they were honoured in antiquity. These spatial settings, especially in relation to sculpture, are studied in the article....

  4. The Reader as Hero.

    Stanton, Ruth

    1987-01-01

    Suggests that reluctant learners can be motivated to read and write if the teacher writes a story in which the student is the hero. Notes that students may be persuaded to write their own stories with themselves as heroes and share them with friends. (JC)

  5. Heroes: Embracing Your Role as Your Child's Hero.

    Kraehmer, Steffen T.

    Despite competition from celebrities, athletes, and musicians, children still regard parents as their primary heroes. This book suggests how parents can realize their potential as role models and deal with the influence of other role models. Chapter 1, "Understand Who Your Child's #1 Hero and Role Model Is," considers the concept of hero…

  6. Defining American Heroes: Analyzing the Metamorphosis of the War Hero in Twentieth Century War Films Using Joseph Campbell's, "Hero's Journey."

    Frith, Luci A.

    In "The Hero's Journey" Joseph Campbell identifies the patterns that inform the myths of the "hero" throughout recorded history. By using Campbell's template, this paper examines how the American war hero is portrayed and has been portrayed in film. The paper states that Americans not only define their war heroes in films but…

  7. Rampant Lechers, Chaste Heroes

    Heimerl, Theresia

    2017-05-01

    Full Text Available Violence is a central element of comic book screen adaptations in both Hollywood (Marvel, DC and Japan. Yet while sexual violence is openly shown in film versions of manga, coded sexualised violence dominates Western productions. Positively connoted protagonists exercise violence, but no sexualised or sexual violence, in both groups. Conversely, villains are characterised by violence and some form of sexually grounded violence, but In Western films, they are ultimately repressed lechers, and only in Japanese productions do they rampantly lose their inhibitory control. Moreover, the heroes of Japanese films are noticeably less chaste than the almost asceticcelibate romantics of Marvel and DC.

  8. Romantic Hero, Language Arts: 5113.92.

    Dade County Public Schools, Miami, FL.

    Developed for a high school quinmester unit on the romantic hero, this guide contains teaching strategies for a study of the characteristics of the romantic hero as he appears in various literary selections. Several major literary works are analyzed and discussed in comparison with popular culture heroes, and the portrayal of the romantic hero in…

  9. The war hero

    Raffaele Menarini

    2014-06-01

    Full Text Available The article explains the phenomenon of war through the transpersonal perspective as an existential way which is independent from subject's intentionality. Therefore war not as a pondered product but as a reproduction of an unthinkable aggressiveness. Within the transpersonal dynamic, those that Bion defined 'basic assumptions' prevail: dependency, attack-escape and pairing. Bion finds in the myth of Palinuro the typical pattern of destructiveness that prevents the birth of the thinkable. Menarini continues Bion's speculation working on the myth of hero Achilles as an archetypal which founds imagery of war and on the figure of Elena as a motor for the destructive act. In fact Elena is considered as a simulacrum, an object that, through the appearance, gives meaning to what would not make sense in absence of it, that is the transpersonal destructiveness. Like Elena every war has its simulacrum, such as the Washington Mall, and history is full of them.

  10. The Role of Heroes in Jewish Education

    Resnick, David

    2002-01-01

    Rosenak has shown that contemporary Jewish education must negotiate the tension between relevance and authenticity. For those who embrace authenticity as a goal, education is often mediated through heroes--who are ideal cultural types. Such education is hampered by the diminution of heroes in contemporary culture: The hero has been replaced by the…

  11. What Is a Hero? An Exploratory Study of Students' Conceptions of Heroes.

    White, Steven H.; O'Brien, Joseph E.

    1999-01-01

    Examines responses of K-12 students about their conception of heroes. Shows that all students employ an operational definition of hero, and tend to name someone whom they personally know. Identifies an increasing concentration on sustained behavior over a period of time for choosing a hero as students become older. (DSK)

  12. The contaminated Western Hero and other madness during the Atomic Age

    Herzog, Rudolph

    2012-01-01

    The book on mad activities during the Atomic Age includes the following topics: The second most hazardous invention in all time; the red bomb; the story on the tactic nuclear war; the contaminated Western hero or how the bomb came to Alaska; swords into plowshares; the apocalypse machine; flying reactors; how safe is safe?; atomic Australia; nuclear medicine on wrong ways; broken arrows.

  13. Heroes as a Context for Teaching Ethics.

    Apostolou, Barbara; Apostolou, Nicholas

    1997-01-01

    Heroes may be proxies for an individual's value system. An accounting course attempts to make ethics more salient by having students identify a personal hero who serves as a model for ethical behavior. Active learning and critical thinking are also engaged. (SK)

  14. Representasi Hero Perempuan Dalam Game Dota 2

    Handoko, Sofyan; Yuwono, Elisabeth Christine; Mardiono, Bambang

    2016-01-01

    Dota 2 merupakan video game yang sedang berkembang di Indonesia, adalah game yang mempertarungkan pemain-pemain yang terbagi kedalam dua tim yang berbeda. Dota 2 memperlihatkan bahwa meskipun game bertema perang, terdapat karakter-karakter yang biasa disebut hero, terdapat sosok perempuan pada game Dota 2. Studi dilakukan untuk melihat apakah hero perempuan dalam game Dota 2 telah direpresentasikan sesuai dengan atribut mereka masing-masing (Strength, Agility, dan Intellegence) dan melihat ma...

  15. Another Face of the Hero: "The Matrix" as Modern Hero-Quest.

    Stroud, Scott R.

    This paper analyzes the interesting narrative structure of the hero-quest myth contained within the 1999 film, "The Matrix," and explicates the implications of this message upon the audience. Initially, the relevance of myth to movies and the format of Joseph Campbell's hero-quest is illustrated. This format is then applied to "The…

  16. The Faces of a Thousand Heroes: The Impact of Visual Communication Technologies on the Culture Hero.

    Strate, Lance

    1995-01-01

    States that conceptions of the hero, and the importance of appearance, have altered with changes in visual communication technologies. Discusses the celebration of models and "attractiveness" as fame depends on media whose function is to attract audiences. Concludes that this both democratizes and trivializes the hero, but also, through…

  17. "We Don't Need Another Hero:" Heroes and Role Models in Germany and Israel

    Yair, Gad; Girsh, Yaron; Alayan, Samira; Hues, Henning; Or, Elad

    2014-01-01

    This study provides insights about attitudes toward heroes and role models in Germany and Israel. We expected German and Israeli school textbooks and teachers to provide varying renditions for the traumatic effects of World War II and the Holocaust, and for students to express different attitudes about the role of heroes in their lives. In…

  18. A selection of Slovenian literary heroes for the preschool period

    Dolinar, Ana

    2014-01-01

    In preschools, Slovenian literary heroes are being displaced by foreign fantastic heroes that impress children via cartoons, magazines and video games. Slovenian heroes are an important part of our culture and can act as companions of sorts within citizenship education of youngsters. This thesis should serve as a promotion of Slovenian literary heroes for children of all ages, beginning with the preschool period. The thesis defines the selection criterion of characters; it introduces their st...

  19. The contaminated Western Hero and other madness during the Atomic Age; Der verstrahlte Westernheld und anderer Irrsinn aus dem Atomzeitalter

    Herzog, Rudolph

    2012-11-01

    The book on mad activities during the Atomic Age includes the following topics: The second most hazardous invention in all time; the red bomb; the story on the tactic nuclear war; the contaminated Western hero or how the bomb came to Alaska; swords into plowshares; the apocalypse machine; flying reactors; how safe is safe?; atomic Australia; nuclear medicine on wrong ways; broken arrows.

  20. 78 FR 48315 - Safety Zone; North Hero Air Show; North Hero, VT

    2013-08-08

    ... FR Federal Register NPRM Notice of Proposed Rulemaking A. Regulatory History and Information The... During this air show there will be low flying planes conducting aerobatic maneuvers east of North Hero...

  1. Anthony Trollope’s Barsetshire Heroes

    1990-01-01

    tapped the rich lode of Greek mythology and the epic heroes to obtain sources for poems, essays, and stories. In The Heroea, for example, Kingsley’s 1856...and the defiant Prometheus of Greek mythology exhibit the rage and unyielding independence that attracted the later Romantic poets. In Shelley’s

  2. Romantic Democracy, Ronald Reagan, and Presidential Heroes.

    Fisher, Walter R.

    1982-01-01

    This practical criticism is written for communication scholars who seek further understanding of significant communication events. Believing that a romantic strain exists in American history/politics, this essay suggests characteristics of presidential heroes, relates Ronald Reagan's rhetoric to the romantic tradition, and compares his rhetoric…

  3. Lay perspectives on the social and psychological functions of heroes.

    Kinsella, Elaine L; Ritchie, Timothy D; Igou, Eric R

    2015-01-01

    Declaring and thinking about heroes are common human preoccupations but surprisingly aspects of heroism that reinforce these behaviors are not well-understood. In four thematically consistent studies, we attempt to identify lay perspectives about the psychological functions served by heroes. In Study 1, participants (n = 189) freely generated open-ended descriptions of hero functions, which were then sorted by independent coders into 14 categories (e.g., instill hope, guide others). In Study 2, in an attempt to identify the most important functions associated with heroes, participants (n = 249) rated how each function corresponded with their personal views about heroes. Results from a confirmatory factor analysis suggested that a three-factor model of hero functions fit the data well: participants thought that heroes enhanced the lives of others, promoted morals, and protected individuals from threats. In Study 3 (n = 242), participants rated heroes as more likely to fulfill a protecting function than either leaders or role models. In Studies 4A (n = 38) and 4B (n = 102), participants indicated that thinking about a hero (relative to a leader or an acquaintance) during psychological threat fulfilled personal enhancement, moral modeling, and protection needs. In all, these findings provide an empirical basis to spur additional research about the social and psychological functions that heroes offer.

  4. Lay perspectives on the social and psychological functions of heroes

    Elaine Louise Kinsella

    2015-02-01

    Full Text Available Declaring and thinking about heroes are common human preoccupations but surprisingly aspects of heroism that reinforce these behaviors are not well understood. In four thematically consistent studies, we attempt to identify lay perspectives about the psychological functions served by heroes. In Study 1, participants (N = 189 freely generated open-ended descriptions of hero functions, which were then sorted by independent coders into 14 categories (e.g., instill hope, guide others. In Study 2, in an attempt to identify the most important functions associated with heroes, participants (N = 249 rated how each function corresponded with their personal views about heroes. Results from a confirmatory factor analysis suggested that a three-factor model of hero functions fit the data well: participants thought that heroes enhanced the lives of others, promoted morals, and protected individuals from threats. In Study 3 (N = 242, participants rated heroes as more likely to fulfill a protecting function than either leaders or role models. In Studies 4a (N = 38 and 4b (N = 102, participants indicated that thinking about a hero (relative to a leader or an acquaintance during psychological threat fulfilled personal enhancement, moral modelling, and protection needs. In all, these findings provide an empirical basis to spur additional research about the social and psychological functions that heroes offer.

  5. Transforming impostors into heroes. Metaphors for innovative nursing education.

    Heinrich, K T

    1997-01-01

    Nurses negotiating professional transitions, whether they are entering an academic program or assuming a new role in the workplace, often feel like impostors. The metaphor of the hero can serve as an "antidote" to the impostor syndrome. The author describes an educational experience shaped around the impostor and hero metaphors that integrates feminist process with expressive methods to transform nurses' perceptions of themselves from impostors into heroes.

  6. NHS trust chief executives as heroes?

    Learmonth, M

    2001-01-01

    This paper presents a reading of the transcripts of interviews with NHS Trust Chief Executives. Using a poststructuralist understanding of the interviews, it privileges a reading that (ironically) represents these Chief Executives as heroes. Following the classic hero story line, they leave the civilized order of home and journey into a threatening wilderness where they encounter dangerous and magical things but overcome them all because of their masculine characteristics such as rationality, strength and resourcefulness. One way in which these stories can be understood to have significance is that they (misleadingly but powerfully) portray management as obvious and necessary by evocatively drawing on a myth of ancient origin. The piece concludes with some reflections on the ontological implications of the analysis and reflexive comments on the production of truth as a problem.

  7. The Byronic Hero: Emergence, Issues and Definition of his Progenies

    Pop Zarieva, Natalija; Iliev, Krste

    2016-01-01

    Abstract The focus of this paper is the work of Lord Gordon Byron, specifically the creation of idea of the Byronic hero. This paper aims at defining the idea of the Byronic hero that has been created from the period Byron created his heroes and continues to be shaped in history by literary critics till today. Although the majority of literary scholars agree upon the fact that the first literary Byronic hero was Byron's Childe Harold, the protagonist of Byron's epic poem Childe Harold's Pi...

  8. Using Stories about Heroes To Teach Values. ERIC Digest.

    Sanchez, Tony R.

    This digest discusses a method of teaching values by using the lives of heroes as examples. The trend for teaching values is to offer methods of analysis and judgment that lead to answers about right and wrong, better and worse concerning personal behavior and common good. Stories about heroes have been identified as the means of teaching and…

  9. Pre-test analysis of protected loss of primary pump transients in CIRCE-HERO facility

    Narcisi, V.; Giannetti, F.; Del Nevo, A.; Tarantino, M.; Caruso, G.

    2017-11-01

    In the frame of LEADER project (Lead-cooled European Advanced Demonstration Reactor), a new configuration of the steam generator for ALFRED (Advanced Lead Fast Reactor European Demonstrator) was proposed. The new concept is a super-heated steam generator, double wall bayonet tube type with leakage monitoring [1]. In order to support the new steam generator concept, in the framework of Horizon 2020 SESAME project (thermal hydraulics Simulations and Experiments for the Safety Assessment of MEtal cooled reactors), the ENEA CIRCE pool facility will be refurbished to host the HERO (Heavy liquid mEtal pRessurized water cOoled tubes) test section to investigate a bundle of seven full scale bayonet tubes in ALFRED-like thermal hydraulics conditions. The aim of this work is to verify thermo-fluid dynamic performance of HERO during the transition from nominal to natural circulation condition. The simulations have been performed with RELAP5-3D© by using the validated geometrical model of the previous CIRCE-ICE test section [2], in which the preceding heat exchanger has been replaced by the new bayonet bundle model. Several calculations have been carried out to identify thermal hydraulics performance in different steady state conditions. The previous calculations represent the starting points of transient tests aimed at investigating the operation in natural circulation. The transient tests consist of the protected loss of primary pump, obtained by reducing feed-water mass flow to simulate the activation of DHR (Decay Heat Removal) system, and of the loss of DHR function in hot conditions, where feed-water mass flow rate is absent. According to simulations, in nominal conditions, HERO bayonet bundle offers excellent thermal hydraulic behavior and, moreover, it allows the operation in natural circulation.

  10. Reactor

    Toyama, Masahiro; Kasai, Shigeo.

    1978-01-01

    Purpose: To provide a lmfbr type reactor wherein effusion of coolants through a loop contact portion is reduced even when fuel assemblies float up, and misloading of reactor core constituting elements is prevented thereby improving the reactor safety. Constitution: The reactor core constituents are secured in the reactor by utilizing the differential pressure between the high-pressure cooling chamber and low-pressure cooling chamber. A resistance port is formed at the upper part of a connecting pipe, and which is connect the low-pressure cooling chamber and the lower surface of the reactor core constituent. This resistance part is formed such that the internal sectional area of the connecting pipe is made larger stepwise toward the upper part, and the cylinder is formed larger so that it profiles the inner surface of the connecting pipe. (Aizawa, K.)

  11. Reactor

    Ikeda, Masaomi; Kashimura, Kazuo; Inoue, Kazuyuki; Nishioka, Kazuya.

    1979-01-01

    Purpose: To facilitate the construction of a reactor containment building, whereby the inspections of the outer wall of a reactor container after the completion of the construction of the reactor building can be easily carried out. Constitution: In a reactor accommodated in a container encircled by a building wall, a space is provided between the container and the building wall encircling the container, and a metal wall is provided in the space so that it is fitted in the building wall in an attachable or detatchable manner. (Aizawa, K.)

  12. For Parents Particularly: Lessons in Moral Behavior. A Few Heroes.

    Cohen, Stewart

    1993-01-01

    Discusses ways for parents (and educators) to use the life stories of heroes, such as individuals who rescued Jews from the Holocaust, to foster children's moral courage, sense of right and wrong, and commitment to others. (MDM)

  13. Evaluasi Customer Relationship Management pada Supermarket Hero di Jakarta Timur

    Liawatimena, S; Amanda, M. F; Handoko, Handoko; Hendry, Hendry

    2002-01-01

    The growing of many big retailer make Hero Supermarket must obtaining it’s existance in retail business. Therefore, Hero Supermarket must form CRM (Customer Relationship Management) in order to increase a new customer, increase profit and maintaining customer, and pay attention to valuable customer. Data analysis done by searching procentage from many questions and cartesius diagram. The conclusion, the highest suitable level there are 98,27%  of quality product and the lowest is the price of...

  14. Reactors

    Shah, Vivek; Vaz Salles, Marcos António

    2018-01-01

    The requirements for OLTP database systems are becoming ever more demanding. Domains such as finance and computer games increasingly mandate that developers be able to encode complex application logic and control transaction latencies in in-memory databases. At the same time, infrastructure...... engineers in these domains need to experiment with and deploy OLTP database architectures that ensure application scalability and maximize resource utilization in modern machines. In this paper, we propose a relational actor programming model for in-memory databases as a novel, holistic approach towards......-level function calls. In contrast to classic transactional models, however, reactors allow developers to take advantage of intra-transaction parallelism and state encapsulation in their applications to reduce latency and improve locality. Moreover, reactors enable a new degree of flexibility in database...

  15. Moral Heroes Look Up and to the Right.

    Frimer, Jeremy A; Sinclair, Lisa

    2016-03-01

    Portraits of moral heroes often portray the hero gazing up and to the viewer's right in part because ideologically minded followers select and propagate these images of their leaders. Study 1 found that the gaze direction of portraits of moral heroes (e.g., Martin Luther King, Jr.) tend to show the hero looking up-and-right more often than chance would predict, and more often than portraits of celebrities (e.g., Elvis Presley) do. In Studies 2 and 3, we asked participants to play the role of an ideologically motivated follower, and select an image of their leader to promote the cause. Participants preferentially selected the up-and-right version. In Study 4, we found that conceptual metaphors linking directionality to personal virtues of warmth, pride, and future-mindedness helped explain why the up-and-right posture looks most heroic. Followers play an active role in advancing social causes by portraying their leaders as moral heroes. © 2016 by the Society for Personality and Social Psychology, Inc.

  16. Qualitative Research as a Hero's Journey: Six Archetypes to Draw on

    Villate, Vanessa M.

    2012-01-01

    Is the research process similar to a hero's journey? Just as a hero draws on different archetypes during the journey, a researcher moves through phases and must draw upon different strengths. In this article, the six archetypes that Pearson (1998) links to the hero's journey are described. Then, each phase of a qualitative research study is…

  17. 78 FR 78998 - 60-Day Notice of Proposed Information Collection: HUD Environmental Review Online System (HEROS)

    2013-12-27

    ... Information Collection: HUD Environmental Review Online System (HEROS) AGENCY: Office of Community Planning... Information Collection Title of Information Collection: HUD Environmental Review Online System (HEROS). OMB... online tool called the HUD Environmental Review Online System (HEROS), which will allow users to complete...

  18. Evaluasi Customer Relationship Management pada Supermarket Hero di Jakarta Timur

    S. Liawatimena

    2002-09-01

    Full Text Available The growing of many big retailer make Hero Supermarket must obtaining it’s existance in retail business. Therefore, Hero Supermarket must form CRM (Customer Relationship Management in order to increase a new customer, increase profit and maintaining customer, and pay attention to valuable customer. Data analysis done by searching procentage from many questions and cartesius diagram. The conclusion, the highest suitable level there are 98,27%  of quality product and the lowest is the price of merchandise, which is 45,35%. Some atribute are over the customers hope, that is good shopping place image, completeness, the comfortable and easyness in shopping, and safetyness. There are five most important atribut, that is the price, quality, completeness, the comfortable and easyness in shopping, and parking space. Those atribute will determine wether the customer of Hero Supermarket will be loyal or not.

  19. We don't need another hero.

    Badaracco, J L

    2001-09-01

    Everybody loves the stories of heroes like Martin Luther King, Jr., Mother Teresa, and Gandhi. But the heroic model of moral leadership usually doesn't work in the corporate world. Modesty and restraint are largely responsible for the achievements of the most effective moral leaders in business. The author, a specialist in business ethics, says the quiet leaders he has studied follow four basic rules in meeting ethical challenges and making decisions. The rules constitute an important resource for executives who want to encourage the development of such leaders among their middle managers. The first rule is "Put things off till tomorrow." The passage of time allows turbulent waters to calm and lets leaders' moral instincts emerge. "Pick your battles" means that quiet leaders don't waste political capital on fights they can't win; they save it for occasions when they really want to fight. "Bend the rules, don't break them" sounds easier than it is--bending the rules in order to resolve a complicated situation requires imagination, discipline, restraint, flexibility, and entrepreneurship. The fourth rule, "Find a compromise," reflects the author's finding that quiet leaders try not to see situations as polarized tests of ethical principles. These individuals work hard to craft compromises that are "good enough"--responsible and workable enough--to satisfy themselves, their companies, and their customers. The vast majority of difficult problems are solved through the consistent striving of people working far from the limelight. Their quiet approach to leadership doesn't inspire, thrill, or provide story lines for uplifting TV shows. But the unglamorous efforts of quiet leaders make a tremendous difference every day in the corporate world.

  20. Debating fabrication: 'Syrian Hero Boy' in the virtual public sphere

    Storaas, Ingrid Hovda

    2016-01-01

    In November 2014, the film “Syrian hero boy” went viral. It depicted a young boy targeted by snipers. He dodges the bullets, and manages to save another child from the scene. After the story was published in newspapers worldwide, however, it became clear that it was a fabrication, shot and directed at a set in Malta. This thesis explores the media coverage of “Syrian hero boy” through a content analysis of 93 articles written about the film in online newspapers, asking how this coverage fit w...

  1. Reactor

    Fujibayashi, Toru.

    1976-01-01

    Object: To provide a boiling water reactor which can enhance a quake resisting strength and flatten power distribution. Structure: At least more than four fuel bundles, in which a plurality of fuel rods are arranged in lattice fashion which upper and lower portions are supported by tie-plates, are bundled and then covered by a square channel box. The control rod is movably arranged within a space formed by adjoining channel boxes. A spacer of trapezoidal section is disposed in the central portion on the side of the channel box over substantially full length in height direction, and a neutron instrumented tube is disposed in the central portion inside the channel box. Thus, where a horizontal load is exerted due to earthquake or the like, the spacers come into contact with each other to support the channel box and prevent it from abnormal vibrations. (Furukawa, Y.)

  2. Heroes and Villains: Ijaw Nationalist Narratives of the Nigerian Civil ...

    the Ijaw. The fiscal centralization of oil resources that followed the war and the persistence of minority exclusion within the Nigerian polity have encouraged Ijaw elites, and other southern minorities, to review their commitment to Nigerian federalism. Conflicting tales of the Ijaw nationalist hero Isaac Boro testify to a growing ...

  3. Celebrities and Heroes as Models of Self-Perception

    Szymanski, Gerald G.

    1977-01-01

    Who are today's models and what difference does it make? A secondary English teacher in Detroit who later became a university teacher examines the hero and the celebrity as seen by his secondary students and teachers and future teachers from 1959-1976. (Author/RK)

  4. Folk Hero Modeling Therapy for Puerto Rican Adolescents.

    Costantino, Guiseppe; And Others

    1988-01-01

    Describes development of a new modality for Puerto Rican adolescents which presents Puerto Rican folk heros and heroines in modeling therapy targeted towards enhancing adolescents' pride in their ethnic heritage. Evaluation of therapy using 21 adolescents indicated subjects increased in self-disclosure and self-confidence, gained pride, learned…

  5. Narratives and shared memories of heroes in the Aphrodisian cityscape

    Mortensen, Eva

    2017-01-01

    The article revolves around narratives that were shaped, adapted and maintained by past and present heroes in the city of Aphrodisias. The focus is on two different years, AD 14 and AD 100, and the intention is to see when, how and why certain narratives developed in a limited time period...

  6. A lyric hero in Block’s poetry

    Hunarikova P. H.

    2016-12-01

    Full Text Available in the article the way of lyric hero is examined, how he changed from an in love romantic, despairing, losing a faith man, to the bitter fighter for new Russia. The author also points that Alexander Block entered the Russian literature, fiction of mankind, as a brilliant poet of the era.

  7. Book Talk. Books About All Kinds of Heroes.

    Freeman, Judy

    1998-01-01

    Presents an annotated listing of books about all kinds of heroes for elementary school students. Stories include the young King Arthur; an assertive, baseball-playing heroine who becomes a princess; an older brother dealing with his younger brother; a Christmas story; civil rights icon Rosa Parks; and the cow who jumped over the moon. (SM)

  8. The Cult of the Romantic Hero: Literature and Memorials

    Jesús Ángel Sánchez-García

    2015-09-01

    Full Text Available : In the West the cult of the remains and relics of heroes is a tradition that can essentially be traced back to Ancient Greece. Nevertheless, when analyzing the re-emergence of the hero cult during a period as decisive in modern European history as the nineteenth century we should not restrict ourselves to the study of ancient tombs and memorials as archaeological artefacts alone. This paper will thus approach the cult of the Romantic hero from the perspective of cultural history, drawing on the literature and art inspired by historical figures that were the object of this new veneration. Taking Pierre Nora’s characterization of places of memory or lieux de mémoire as a starting point, this paper will reveal some of the links, from the literary to the artistic, that were used to encapsulate and project the glorification of Romantic heroes. An obsession with building tombs and memorials took root in the Romantic age, becoming the most visible manifestation of political strategies designed to convert memory into history. In examining the cases of Horatio Nelson, Antoine de Guillaume-Lagrange, John Moore and Napoleon, this paper underscores the value of focusing on the glorification of the figures being remembered – of their lives and actions – through literature and the first funeral rites, and on the structures and artworks that housed their remains and preserved their memories

  9. Using Heroes as Role Models in Values Education: A Comparison between Social Studies Textbooks and Prospective Teachers' Choice of Hero or Heroines

    Yazici, Sedat; Aslan, Mecnun

    2011-01-01

    This study explores the relationships between the frequency and identities of heroes as role models used in the social studies textbooks in teaching 20 core values and prospective teachers' preferences of heroes. The findings indicated that there are striking similarities and differences between these two variables. For gender variable, 97.4% of…

  10. Origins Space Telescope: HEterodyne Receiver for OST (HERO)

    Bergin, Edwin; Wiedner, Martina; Laurens, Andre; Gerin, Maryvonne; HERO team, Origins Space Telescope Science and Technology Definition Team

    2018-01-01

    The Origins Space Telescope (OST) is a mission concept for the Far-Infrared Surveyor, one of the four science and technology definition studies selected by NASA HQ for the 2020 Astronomy and Astrophysics Decadal survey. The OST study will encompass two mission concepts (poster by A. Cooray). Concept 1 is an extremely versatile observatory with 5 science instruments, of which the HEterodyne Receivers for OST (HERO) is one.HERO’s main targets are high spectral resolution observations (Dl/l up to 107 or Dv = 0.03km/s) of water to follow its trail from cores to YSOs as well as H2O and HDO observations on comets to explore the origins of water. HERO will probe all neutral ISM phases using cooling lines ([CII], [OI]) and hydrides as probes of CO-dark H2 (CH, HF). HERO will reveal how molecular clouds and filaments form in the local ISM up to nearby galaxies. HERO will enable detailed understanding of feedback mechanisms : shocks, cosmic rays, UV induced feedback and will provide a map of the cosmic ray ionization rate in the Galaxy and nearby galaxies using molecular ions (ArH+, OH+, H3O+).In order to achieve these observational goals, HERO will cover an extremely wide frequency range from 468 to 2700 GHz (641 to 111microns) and a window around the OI line at 4563 to 4752GHz (66 to 63 microns). It will consist of very large focal plane arrays of 128 pixels between 900 - 2700 GHz and at 4.7 THz, and 32 pixels for the 468 to 900 GHz range. The instrument is exploiting Herschel/HIFI heritage, but will go well beyond HIFIs capacities. HERO’s large arrays require low dissipation and low power components. The HERO concept makes use of the latest cryogenic SiGe amplifier technology, as well as CMOS technology for the backends with 2 orders of magnitude lower power. Advances in Local Oscillator technology have also been taken into account and ambitious, but realistic assumptions have been made for future amplifier multiplier chains going up to 4.7 THz.Origins will enable

  11. News Reports about Health: Between Heroes and Plagues

    Acianela Montes de Oca

    2013-12-01

    Full Text Available This research characterizes news reports published in the health sections of two newspapers, El Nacional and El Universal, from 1996 to 2006 from the perspective of the myths. Mytheme analysis and rhetorical figures show that myths more frecuently used were The Hero, The Progress, The Plague and Panacea. From the analysis we concluded that the texts of the health sections of analyzed newspapers show a dangerous world (stalked by The Plague that only the Hero (the doctor can face. Science, technology, modernity, health, The Progress, Panacea, seem a gift rather than a human conquest. If we accept the premise that the myths act unify social representations and introduce a single meaning to the future, these stories express a look of helplessness and uncertainty in illness and risk.

  12. Judging Jack: Rethinking Historical Agency and the Sport Hero

    Kohe, Geoff

    2014-01-01

    One aspect of the dizzying (aesthetic, cultural, linguistic, visual, and post-modern) ‘turns’ Sport history has taken in recent times has been the revision/deconstruction of sporting heroes and demystification of historical narratives. This, in turn, has attended to larger historical concerns about the centrality of agents and agency in narrative making. Encouraged by these directions, this paper reconsiders the primacy afforded agents and their agency within national Olympic history creation...

  13. Health Economics in Radiation Oncology: Introducing the ESTRO HERO project

    Lievens, Yolande; Grau, Cai

    2012-01-01

    New evidence based regimens and novel high precision technology have reinforced the important role of radiotherapy in the management of cancer. Current data estimate that more than 50% of all cancer patients would benefit from radiotherapy during the course of their disease. Within recent years, the radiotherapy community has become more than conscious of the ever-increasing necessity to come up with objective data to endorse the crucial role and position of radiation therapy within the rapidly changing global oncology landscape. In an era of ever expanding health care costs, proven safety and effectiveness is not sufficient anymore to obtain funding, objective data about cost and cost-effectiveness are nowadays additionally requested. It is in this context that ESTRO is launching the HERO-project (Health Economics in Radiation Oncology), with the overall aim to develop a knowledge base and a model for health economic evaluation of radiation treatments at the European level. To accomplish these objectives, the HERO project will address needs, accessibility, cost and cost-effectiveness of radiotherapy. The results will raise the profile of radiotherapy in the European cancer management context and help countries prioritizing radiotherapy as a highly cost-effective treatment strategy. This article describes the different steps and aims within the HERO-project, starting from evidence on the role of radiotherapy within the global oncology landscape and highlighting weaknesses that may undermine this position.

  14. Health economics in radiation oncology: introducing the ESTRO HERO project.

    Lievens, Yolande; Grau, Cai

    2012-04-01

    New evidence based regimens and novel high precision technology have reinforced the important role of radiotherapy in the management of cancer. Current data estimate that more than 50% of all cancer patients would benefit from radiotherapy during the course of their disease. Within recent years, the radiotherapy community has become more than conscious of the ever-increasing necessity to come up with objective data to endorse the crucial role and position of radiation therapy within the rapidly changing global oncology landscape. In an era of ever expanding health care costs, proven safety and effectiveness is not sufficient anymore to obtain funding, objective data about cost and cost-effectiveness are nowadays additionally requested. It is in this context that ESTRO is launching the HERO-project (Health Economics in Radiation Oncology), with the overall aim to develop a knowledge base and a model for health economic evaluation of radiation treatments at the European level. To accomplish these objectives, the HERO project will address needs, accessibility, cost and cost-effectiveness of radiotherapy. The results will raise the profile of radiotherapy in the European cancer management context and help countries prioritizing radiotherapy as a highly cost-effective treatment strategy. This article describes the different steps and aims within the HERO-project, starting from evidence on the role of radiotherapy within the global oncology landscape and highlighting weaknesses that may undermine this position. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

  15. Oliver: The Rise and Decline of a Hero

    Carlos Alvar

    2014-12-01

    Full Text Available The essential topic of this paper is the literary figure of Oliver, from his first appearances to his gradual disappearance from the texts. Thus, the starting point is the presence of the anthroponym and the discussions about its etymology, given that numerous problems (as well as some explanations affecting Western epic poetry and the relationships established between characters and texts can be related to that origin. It seems that he is a southern hero and as such, figured prominently in several lost chansons de geste, from which late or geographically distant versions survive (such as the Scandinavian versions. Since this hero belongs to the Occitan tradition, linked to the basin of the Rhone, and is alien to French epic tradition, the importance of his role in the Chanson de Roland is surprising, and from there, its preeminence in onomastics and in the lists of the Twelve Peers; however, the place he occupies is not always the same, and he is often set aside. In the Iberian Peninsula, it is not unusual to see how other heroes take the place of Oliver: Bernardo del Carpio and Reinaldos de Montalbán. Our paladin ends up being a mere shadow, a distant memory that is finally forgotten.

  16. From Tragedy to Triumph: Counselor as Companion on the Hero's Journey.

    Halstead, Richard W.

    2000-01-01

    A counselor discusses his experiences while working with a male client on a "hero's journey," or the path to self-realization. The author explains how he grappled with what his role, as counselor, should be in this process. He concludes that he should act as the "hero's travel guide," someone who makes the clients' path shorter, smoother, or less…

  17. Cosmogynesis: The female hero in Tanith Lee’s The winter players

    Eileen Donaldson

    2017-11-01

    Full Text Available The mass appearance of female heroes in popular culture in recent decades may encourage the opinion that the female hero has achieved the same credibility as her male counterpart. This article demonstrates, however, that she continues to generate ambivalence and that the primary reservation of most scholars is that a female hero either cannot or should not perform the masculinity of the archetype. Scholarly arguments tend towards two positions: that a female hero is an oxymoron; or that she should be limited to battles on behalf of women in which she champions feminine characteristics and challenges the belief that femininity is not heroic. Neither of these positions take archetypal heroism into account. Advocating a return to Jungian archetypal theory, I argue that the masculinity of the archetype may be as successfully performed by a female hero as by a male hero. Once this premise is accepted, the female hero should be expected to undergo the same trials and perform the same function as a male hero, in short, she should navigate the heroic monomyth outlined by Joseph Campbell. I illustrate this point through a literary analysis of Tanith Lee’s 1976 fantasy novella The winter players.

  18. Use of Brand Heroes in Strategic Reputation Management: The Case of Bacardi, Adidas, and Daimler

    Bücker, J.J.L.E.; Ernste, K.; Erdemir, A.

    2018-01-01

    The last decade witnessed a renewal of historical approaches towards business management that emphasize the malleability of the past in order to serve the present. This chapter studies the use of heroes when organizations pursue strategic change, which the authors term hero-molding. The aim is to

  19. Who Are Our Heroes? A Critical-Thinking, Consciousness-Raising Lesson.

    Reissman, Rose

    1994-01-01

    When teachers discuss different types of heroes in the classroom, they allow their students to meet powerful new role models. The article discusses how teachers can get students thinking about what makes a hero and in the process, teach them about historical figures, social issues, and current events. (SM)

  20. The Archaeology of Heroes: Carlyle, Foucault and the Pedagogy of Interdisciplinary Narrative Discourse

    Campbell, Louise

    2017-01-01

    This paper argues in favour of the beneficial currency of Thomas Carlyle's "On Heroes, Hero-worship and the Heroic in History" in three ways, each of which finds the basis of its critique in aspects of Foucault's theories of discursive practice, as explored in Foucault's theories of historical discourse; 1) that Carlyle's terminology…

  1. The characteristic features which are common for heroes in works by I. malik-zade and for heroes in stories by V. Shukshin

    Guseynova, L.

    2010-01-01

    The author tries to identify V. Shukshin and Azerbaijani writer's reference points during creation of the concept of character in article The characteristic features which are common for heroes in works by I. Malik-zade and for heroes in stories by V. Shukshin. In this way present article can be considered as an original breakthrough, the first a swallow in enlightening of works by Shukshin and the representative of the national literature.

  2. Tatar Nesrinde Olumlu Kahramanlar Positive Heroes In The Tatar Prose

    Ramilya YARULLİNA YILDIRIM

    2013-07-01

    Full Text Available The discussions on the principles and experiences of creation ofthe hero concept, which is regarded as one of the significant subjects ofall times in the Tatar literature, still continue today. That the subjectsof the hero concept are treated in all issues of Kazan Utları (the KazanLights, a literary journal published in Kazan, is a clear evidence of it.Such ideas as “positive hero”, “exemplary hero”, “our day’s hero”,“masked hero” and “challenging hero” are often encountered in theliterary criticism texts of the recent years. The complicated hero conceptand the positive hero in the literature of recent years, which has beeninfluenced by the freedom movement, does not correspond with thedemands of the perfect hero concepts in the Soviet literature because ofthe enrichment of the former in terms of theme and style, progress ofpsychologism and of prevalence of lyrical and critical works.Nevertheless, some authors, though not in the level of the ideal of life,make efforts to create positive heroes who have a great faculty ofdecency.This paper will concentrate on the principles of the creation of thepositive hero, ideas and experiences of such men of the Tatar literaturein recent years as D. Zahidullina, A. Helim, G. Gıylmanov and F.Beyremova. From the old literature to 1980’s literature will be reviewedand examples of the positive hero are given from the literary works ofthe period. In the Tatar literature in recent years, the characteristics ofthe positive hero have been ascertained in the works of F. Safin, M.Malikova, A. Helim and F. Yarullin, by means of which the worldviewand ideals of the authors are expressed. Tatar Edebiyatının her dönem için önemli konularından sayılan kahraman konsepti yaratma prensipleri ve tecrübeleriyle ilgili tartışmalar bugün de devam etmektedir. Başkentimiz Kazan şehrinde yayımlanan Kazan Utları (Kazan ışıkları edebiyat dergisinin her sayısında kahraman konsepti konular

  3. Social media and nutrition education: the food hero experience.

    Tobey, Lauren N; Manore, Melinda M

    2014-01-01

    Social media can be a quick, low-cost, direct way for nutrition educators to broaden the scope of their targeted programs. The authors' viewpoint is that for social media to be effective, strategies for its use should follow "best practices" guidelines. This viewpoint suggests social media best practices based on experience gained from the Food Hero social marketing campaign. Understanding of how nutrition educators can take advantage of social media as a new mechanism for reaching their target audience is needed, including best practices for implementation, management, and evaluation. Copyright © 2014 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

  4. Guitar hero: From icon of popular culture to nostalgic self-design

    Popadić Milan

    2013-01-01

    Full Text Available This paper aims to interpret the transformations of the “guitar hero”, from the icon of popular culture to models of nostalgic selfdesign, meaning transformations from generally recognizable figure in the context of popular culture to mimetic patterns based in medium of contemporary technologies. The phrase “guitar hero”, in its basic meaning represents a specific phenomenon in popular culture and popular music of the second half of the twentieth century. Guitar hero is a performer with skills and appearance that transcends and transforms common patterns of guitar performances, thus creating a new and distinctive form of musical and performative statement. Seen in this way, a guitar hero is close to heroic models of antique and romanticism. On the other hand, contemporary products of cultural industries and the entertainment industry to some extent changed this basic meaning of the phrase “guitar hero”. Creation and popularization of video games like Guitar Hero or Rock Band, as well as the availability of high quality replicas of instruments of “original” guitar heroes, carried the meaning of this phrase more explicit in the field of consumerism, fetishism, and virtualization. Guitar hero in its basic meaning undoubtedly belongs to the history of the twentieth century popular culture. However, his legacy is still very much present. Specific heritage of a guitar hero in contemporary popular culture lies primarily in the dissemination of the original model through the mechanisms of consumer society, and then in the mimetic patterns based in media of contemporary technology. Thanks to these characteristics, the phenomenon of guitar hero was transformed from icon of popular culture to nostalgic self-design over the original model. Whether it is a replica of instruments of guitar hero or empathy in virtual reality of video games as Guitar Hero or Rock Band, guitar hero heritage confirms its place in modern popular culture, despite

  5. ‘But when I tell them about heroes, then they listen’

    Frisk, Kristian

    2017-01-01

    This paper explores the rise of the soldier hero in Denmark. From the analysis of Prime Ministers’ New Year addresses between 1940–2015, it is evident that the heroification of Danish soldiers has been linked to the elevation of professionalism, self-motivation, individual responsibility, and glo...... international interdependency. On this basis, the paper seeks to contribute to the literature on the social construction of heroes within a theoretical perspective that takes the dynamic relations between states into account, and to explain why specific notions of a hero develop....

  6. Tommy Wilhelm: The Untraditional Hero of Saul Bellow’s Seize the Day

    Md Abu Shahid Abdullah

    2015-10-01

    Full Text Available Many critics have judged Tommy Wilhelm in terms of his weaknesses only and have considered him a complete failure, far from being a hero. But many of them have failed to see the bright side of Tommy’s character. He possesses rare human qualities completely alien to the citizens of a morally corrupt society. The article aims to  prove that in spite of possessing various negative and unheroic qualities, Tommy, by defying social structure and network, asserts his non-conformity which, along with his humanity, love and philanthropy, aversion for power and material success and most importantly, his power of overcoming humiliation, secures him the position of a hero although an untraditional one. The narrative structure also plays a significant role behind his being a hero. Keywords: Materialism, Untraditional hero, Humanity, Non-conformity

  7. The hero concept: self, family, and friends who are brave, honest, and hopeful.

    Staats, Sara; Wallace, Heidi; Anderson, Tara; Gresley, Jamee; Hupp, Julie M; Weiss, Elizabeth

    2009-06-01

    The concept of the hero is pervasive and enduring, extending across time, culture, and age. Although an influential schema, the hero has not been empirically examined in depth. Heroic exemplars given by students and community members were examined, and the hypotheses that individuals with high Heroism scores are more hopeful and report higher Coping than individuals with low Heroism scores were also tested. Participants reported similar depictions of heroes and heroic acts; the prototypic hero being a family member, and the most common act exemplified as averting physical harm to others. Quantitative results suggest that individuals high on Heroism scores are more hopeful and cope better than individuals low on Heroism scores. Results indicate that heroism is experienced in everyday life, and a model is proposed.

  8. Ernest Borgnine Lays it on the Line Hollywood Hero Focuses on Macular Degeneration

    ... Feature: Vision Ernest Borgnine Lays it on the Line Hollywood Hero Focuses on Macular Degeneration Past Issues / ... otherwise? Your work. Television. Newspapers. Your wife's wonderful smile. That's what I would miss. We are happily ...

  9. Gender Differences in Adolescents' Choice of Heroes and Admired Adults in Five Countries

    Estrada, Juan Diego; García-Ael, Cristina; Martorell, José Luis

    2015-01-01

    Seven hundred and sixty-eight adolescents from five countries and regions (USA, Spain, Hong Kong, Qatar, and Malaysia), aged 13-19 (M?=?15.78; SD?=?1.28) years, responded to a questionnaire designed to determine who was their most admired famous adult or hero. Male heroes clearly outnumbered admired females (73.3% vs. 26.7%). There was a pattern…

  10. Performance Characteristics of Hero's Turbine Using Hot Water as a Working Fluid

    FUJII, Terushige; OHTA, Jun-ichi; AKAGAWA, Koji; NAKAMURA, Toshi; ASANO, Hitoshi

    1992-01-01

    From the viewpoint of energy conservation and the development of new energy resources,it is important to utilize geothermal resources and waste heat from factories. Among energy conversion device,there is a radial outflow reaction turbine,i.e.,Hero's turbine. Performance characteristics of Hero's turbine are analytically and experimentally clarified for flashing expansion of initially subcooled hot water. It is found that: (a)there is an optimum number of revolutions at which maximum tubine e...

  11. Performance Characteristics of Hero's Turbine Using Hot Water as a Working Fluid

    藤井, 照重; 太田, 淳一; 赤川, 浩爾; 中村, 登志; 浅野, 等

    1990-01-01

    From the view point of energy saving and the development of new energy resources,it is important to utilize geothermal resources and waste heat from factories. As one of the energy conversion expanders,there is a radial outflow reaction turbine(that is,Hero's turbine). Performance characteristics of Hero's turbine using subcooled hot water as a working fluid are clarified analytically and experimentally. It is found that:(a)there is an optimum rotational speed at which maximum turbine efficie...

  12. Competition between the phytophagous stink bugs Euschistus heros and Piezodorus guildinii in soybeans.

    Tuelher, Edmar S; Silva, Éder H; Hirose, Edson; Guedes, Raul Narciso C; Oliveira, Eugênio E

    2016-10-01

    The abundance and contribution of the neotropical brown stink bug, Euschistus heros (F.), and the redbanded stink bug, Piezodorus guildinii (West.), to the composition of insect pests of soybean, Glycine max (L.), fields have changed both spatially and temporally in neotropical soybean production areas. Therefore, we assessed the competitiveness of each species in direct competition experiments following an additive series. We performed mixed (adult) insect infestations in soybean plants and evaluated the fitness of each species and the soybean yield. While the competitive ability of E. heros was significantly compromised by increments in conspecifics and heterospecifics (i.e. P. guildinii), the competitive ability of P. guildinii was compromised by the presence of heterospecifics (i.e. E. heros). The reproductive output of P. guildinii remained unaffected by increments in E. heros or of P. guildinii. Intriguingly, despite the fact that P. guildinii apparently lost the competition with E. heros, almost no pod production was observed in any plant colonised by the former. The higher abundance of E. heros in neotropical soybean fields seems to result from higher competitive ability than its heterospecific competitor P. guildinii, which may prevent the higher losses caused by P. guildinii. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  13. MEASUREMENTS MADE DURING THE COMMISSIONING OF THE WINDSCALE ADVANCED GAS- COOLED REACTOR (WAGR)

    Gallie, R R

    1963-06-15

    Some measurements were made on the WAGR fuel in the APEX and HERO facilities in order to derive the loading pattern. The reactor was then loaded, and measurements of the excess reactivity were in good agreement with predictions. Other measurements made were control rod calibrations, reactivity worths of control rods, isothermal temperature coefficient, and pressure drops. (D.L.C.)

  14. Infarto agudo de miocardio inducido por heroína

    Beatriz Wills

    2014-09-01

    Full Text Available El uso mundial de drogas recreativas ha alcanzado proporciones preocupantes, al punto de amenazar la estabilidad socioeconómica de los países. Se estima que en los países desarrollados una de cada 4 personas ha utilizado drogas recreativas en algún momento de su vida. Por tanto, es frecuente que los médicos se enfrenten a cuadros de intoxicación secundaria al abuso de estas drogas. Además de sus efectos en el sistema nervioso central, también producen cambios significativos a nivel cardiovascular, responsables de una cantidad no despreciable de morbimortalidad relacionada con estas. En este artículo se expone un caso de infarto agudo de miocardio secundario al consumo de heroína, se revisan los efectos sistémicos de esta droga y se examinan el manejo y los mecanismos estudiados que explican esta relación.

  15. Achilles: A Homeric hero enamoured with the absolute.

    Evzonas, Nicolas

    2017-07-21

    This article explores through a psychoanalytical lens the character of Achilles in Homer's Iliad, the matrix behind the Western conception of heroism. The contribution reveals the psychological link binding the words and acts of the most valiant of warriors in Antiquity, which is situated in myth and termed "the Eros of the absolute." The paroxystic ideality underlying the aforementioned myth, which is rooted in the anthropological need to believe, is at the origin of Achilles' legendary μῆνις, that is, the flood of rage triggered by contests for supremacy, aggravated by the loss of his war comrade, aroused by the drama of aging and death, and then transfigured through song and memory. The main claim of the author is that Iliad, despite its seeming lack of attention to interiority, is launched by the archetypal emotion of wrath and owes its appeal to its hero's embrace of heroic idealism in an excessive, radical and absolute way that results in a captivating narcissism and sadomasochistic antithesis of ideality. This argument leads to the conclusion that Homer is the Father of the "primitive horde" of affects. Copyright © 2017 Institute of Psychoanalysis.

  16. THE HUNGER GAMES: REPRESENTING THE NEW IMAGE OF AMERICAN POPULAR HEROES

    Aidatul Chusna

    2016-02-01

    Full Text Available This research is aimed at revealing the new image of American popular heroes as depicted in the novel adaptation film of The Hunger Games which is created as a trilogy, which consists of two more novels: Catching Fire and Mockingjay. This film is one of the most phenomenal films in 2013-2104, which grossed out up to $407,999,255. This research used textual approach, which focused on the text as the object, that is The Hunger Games film. The result shows that The Hunger Games essentially brings the issue of slavery back into scrutiny. However, the creation of the heroin in the film is granted as the reconstruction of popular heroes in America. She is an inspiring female hero which is exemplified as the appreciation of womens values. Yet, the heroin is broadly defined with the qualities of rouge heroes as the characteristics are the representation of the belief and values associated with freedom to wash away the oppression restore the rights of the minority. In addition to the issue of slavery , the symbols of new hope and new spirit are implicitly emerged in the story. This attempt was proficiently done by the heroin, which was eventually created as the new image of the American heroes.

  17. Human or superhuman: The concept of hero in ancient Greek religion and/in politics

    Stevanović Lada

    2008-01-01

    Full Text Available The word hero appears in Greek language with a twofold meaning. On one hand it is used for denoting a divine being, who lived a mortal life, but after doing some great deed deserved to become god. On the other hand, the hero stands for great and brave warrior who is ready to give his life in order to gain immortal glory, and continue to live in the social sphere, in the memory of his descendants. Exactly this epic narrative survived and was exploited many times, as a very convenient and useful pattern in con strutting the ideal of brave warrior, ready to die for his country when necessary. I am going to requisition the relation between two meanings of the word hero, in order to get deeper insight in the meaning of this twofold term in the social and cultural context in which it appears, as a religious concept or as a narrative in war propaganda.

  18. An Introduction to the SMARTRISK Heroes Program: Positive Social Marketing for Adolescent Injury Prevention

    Philip R. Groff

    2006-09-01

    Full Text Available This article provides background on the SMARTRISK Heroes Program, a mobile stage production that introduces young people to the prevalence of unintentional injury for their age group and presents them with a series of strategies that will reduce the likelihood that they will be unintentionally injured or killed. The program logic is consistent with theoretical work from the area of health promotion including the Protection Motivation Theory and the Transtheoretical Model of Stages of Change. The SMARTRISK Heroes Program has been the subject of a number of past evaluations that are briefly described. The program logic model was included in this article. Additional information on the program and its evaluations can be found at http://www.smartrisk.ca by selecting SMARTRISK Heroes, under the “Youth Tab.”

  19. The predictive validity of the HERO Scorecard in determining future health care cost and risk trends.

    Goetzel, Ron Z; Henke, Rachel Mosher; Benevent, Richele; Tabrizi, Maryam J; Kent, Karen B; Smith, Kristyn J; Roemer, Enid Chung; Grossmeier, Jessica; Mason, Shawn T; Gold, Daniel B; Noeldner, Steven P; Anderson, David R

    2014-02-01

    To determine the ability of the Health Enhancement Research Organization (HERO) Scorecard to predict changes in health care expenditures. Individual employee health care insurance claims data for 33 organizations completing the HERO Scorecard from 2009 to 2011 were linked to employer responses to the Scorecard. Organizations were dichotomized into "high" versus "low" scoring groups and health care cost trends were compared. A secondary analysis examined the tool's ability to predict health risk trends. "High" scorers experienced significant reductions in inflation-adjusted health care costs (averaging an annual trend of -1.6% over 3 years) compared with "low" scorers whose cost trend remained stable. The risk analysis was inconclusive because of the small number of employers scoring "low." The HERO Scorecard predicts health care cost trends among employers. More research is needed to determine how well it predicts health risk trends for employees.

  20. Development of a dry artificial diet for Nezara viridula (L.) and Euschistus heros (Fabricius) (Heteroptera: Pentatomidae)

    Fortes, Priscila; Parra, Jose R.P.; Panizzi, Antonio R.

    2006-01-01

    Artificial diets prepared with wheat germ, soybean protein, dextrosol, potato starch, sucrose, cellulose, soybean or sunflower oil, and vitamin solution for rearing Nezara viridula (L.) and Euschistus heros (Fabricius) were tested under controlled temperature (25 ± 1 deg C), RH (60 ± 10%), and photophase (14h). Three diets were tested and compared with the natural diet privet [soybean and peanut seeds and privet Ligustrum lucidum Ait. fruit (Oleaceae)]. All three artificial diets allowed full development. The diet containing sunflower oil was the most suitable for N. viridula while E. heros developed better on a diet composed of soybean oil. Data indicated that the artificial diets were inferior to the natural diet. The artificial diets were more adequate for E. heros. (author)

  1. Development of a dry artificial diet for Nezara viridula (L.) and Euschistus heros (Fabricius) (Heteroptera: Pentatomidae)

    Fortes, Priscila; Parra, Jose R.P. [Universidade de Sao Paulo (USP), Piracicaba, SP (Brazil). Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Dept. Entomologia, Fitopatologia e Zoologia Agricola; Magro, Sandra R. [Faculdade Integrada de Campo Mourao, PR (Brazil); Panizzi, Antonio R. [EMBRAPA, Londrina, PR (Brazil). Centro Nacional de Pesquisa de Soja

    2006-09-15

    Artificial diets prepared with wheat germ, soybean protein, dextrosol, potato starch, sucrose, cellulose, soybean or sunflower oil, and vitamin solution for rearing Nezara viridula (L.) and Euschistus heros (Fabricius) were tested under controlled temperature (25 {+-} 1 deg C), RH (60 {+-} 10%), and photophase (14h). Three diets were tested and compared with the natural diet privet [soybean and peanut seeds and privet Ligustrum lucidum Ait. fruit (Oleaceae)]. All three artificial diets allowed full development. The diet containing sunflower oil was the most suitable for N. viridula while E. heros developed better on a diet composed of soybean oil. Data indicated that the artificial diets were inferior to the natural diet. The artificial diets were more adequate for E. heros. (author)

  2. The Social Perception of Heroes and Murderers: Effects of Gender-Inclusive Language in Media Reports.

    Hansen, Karolina; Littwitz, Cindy; Sczesny, Sabine

    2016-01-01

    The way media depict women and men can reinforce or diminish gender stereotyping. Which part does language play in this context? Are roles perceived as more gender-balanced when feminine role nouns are used in addition to masculine ones? Research on gender-inclusive language shows that the use of feminine-masculine word pairs tends to increase the visibility of women in various social roles. For example, when speakers of German were asked to name their favorite "heroine or hero in a novel," they listed more female characters than when asked to name their favorite "hero in a novel." The research reported in this article examines how the use of gender-inclusive language in news reports affects readers' own usage of such forms as well as their mental representation of women and men in the respective roles. In the main experiment, German participants (N = 256) read short reports about heroes or murderers which contained either masculine generics or gender-inclusive forms (feminine-masculine word pairs). Gender-inclusive forms enhanced participants' own usage of gender-inclusive language and this resulted in more gender-balanced mental representations of these roles. Reading about "heroines and heroes" made participants assume a higher percentage of women among persons performing heroic acts than reading about "heroes" only, but there was no such effect for murderers. A post-test suggested that this might be due to a higher accessibility of female exemplars in the category heroes than in the category murderers. Importantly, the influence of gender-inclusive language on the perceived percentage of women in a role was mediated by speakers' own usage of inclusive forms. This suggests that people who encounter gender-inclusive forms and are given an opportunity to use them, use them more themselves and in turn have more gender-balanced mental representations of social roles.

  3. The social perception of heroes and murderers: Effects of gender-inclusive language in media reports

    Karolina eHansen

    2016-03-01

    Full Text Available The way media depict women and men can reinforce or diminish gender stereotyping. Which part does language play in this context? Are roles perceived as more gender-balanced when feminine role nouns are used in addition to masculine ones? Research on gender-inclusive language shows that the use of feminine-masculine word pairs tends to increase the visibility of women in various social roles. For example, when speakers of German were asked to name their favorite heroine or hero in a novel, they listed more female characters than when asked to name their favorite hero in a novel. The research reported in this paper examines how the use of gender-inclusive language in news reports affects readers’ own usage of such forms as well as their mental representation of women and men in the respective roles. In the main experiment, German participants (N = 256 read short reports about heroes or murderers which contained either masculine generics or gender-inclusive forms (feminine-masculine word pairs. Gender-inclusive forms enhanced participants’ own usage of gender-inclusive language and this resulted in more gender-balanced mental representations of these roles. Reading about heroines and heroes made participants assume a higher percentage of women among persons performing heroic acts than reading about heroes only, but there was no such effect for murderers. A post-test suggested that this might be due to a higher accessibility of female exemplars in the category heroes than in the category murderers. Importantly, the influence of gender-inclusive language on the perceived percentage of women in a role was mediated by speakers’ own usage of inclusive forms. This suggests that people who encounter gender-inclusive forms and are given an opportunity to use them, use them more themselves and in turn have more gender-balanced mental representations of social roles.

  4. AMERICAN SPORT AND THE SPORTS HEROES OF THE ROARING TWENTIES

    Michał Mazurkiewicz

    2014-04-01

    Full Text Available The aim of the article is to show the role of sport in American society against the background of a very important—for many reasons—period of great social transformation in the United States, one which visibly gathered pace in the 1920s. The author presents different aspects of popular culture, which was in full bloom on account of the following factors: the joy after World War I, a sense of optimism, the development of the economy and industry, the growth of big cities, and the greater affluence of the citizens. The analysis of that unusual decade corroborates the role of sport and its great power of influence on society. In an age when technology and mass production had robbed experiences and objects of their uniqueness, sports provided some of the unpredictability and drama that people craved when looking for romance and adventure. The reasons for the popularity of sport in the USA are presented, as well as the major sports diciplines and heroes of American sport who, in a time when mass production seemed to be making individuals less significant, met with a favorable response—people clung to the heroic personalities of sports figures. The analysis of the beginnings of professionalism in sport, the beginnings of organized support, and sports broadcasting, leaves no doubt as to the significance of the period. As the article demonstrates, it was a time of rapid and profound transformation in the realm of sport. Every serious examination of phenomena in contemporary American sport—and this is also true in the case of other countries—without a knowledge of the specificity of sport in the 1920s, would be far from perfect.

  5. Video Capture of Plastic Surgery Procedures Using the GoPro HERO 3+

    Steven Nicholas Graves, MA; Deana Saleh Shenaq, MD; Alexander J. Langerman, MD; David H. Song, MD, MBA

    2015-01-01

    Background: Significant improvements can be made in recoding surgical procedures, particularly in capturing high-quality video recordings from the surgeons? point of view. This study examined the utility of the GoPro HERO 3+ Black Edition camera for high-definition, point-of-view recordings of plastic and reconstructive surgery. Methods: The GoPro HERO 3+ Black Edition camera was head-mounted on the surgeon and oriented to the surgeon?s perspective using the GoPro App. The camera was used to ...

  6. Mythological hero in Boban Knežević's Black blossom

    Jakovljević Mladen M.

    2013-01-01

    Full Text Available Black Blossom by Boban Knežević demonstrates that mythical structures and features, such as elements of the mythological adventure and mythical hero's traits known from ancient myths, as defined by Joseph Campbell, are still present in contemporary fiction, including Serbian literature, as well as that literary heroes and their adventures, regardless of when and where they have been created, have a lot in common. Such mythical patters and heterochrony in Black Blossom reveal the origins, essential features and mechanisms of the problems and dilemmas rooted in one nation's fictional and real past, as well as in its present.

  7. Antonio Ricaurte: the creation of a portray as a child-hero 1830- 1881

    Abel Fernando Martínez Martín

    2012-01-01

    (Ricaurte’s birth and death. Hence, it helps in the process of nation construction by appealing to the children heroes. Same example is Los Niños Héroes de Chapultepec in the oficial Mexican history. This paper collects a mixture of written sources with the National Independence iconographic sources.

  8. Surgical video recording with a modified GoPro Hero 4 camera

    Lin LK

    2016-01-01

    Full Text Available Lily Koo Lin Department of Ophthalmology and Vision Science, University of California, Davis Eye Center, Sacramento, CA, USA Background: Surgical videography can provide analytical self-examination for the surgeon, teaching opportunities for trainees, and allow for surgical case presentations. This study examined if a modified GoPro Hero 4 camera with a 25 mm lens could prove to be a cost-effective method of surgical videography with enough detail for oculoplastic and strabismus surgery. Method: The stock lens mount and lens were removed from a GoPro Hero 4 camera, and was refitted with a Peau Productions SuperMount and 25 mm lens. The modified GoPro Hero 4 camera was then fixed to an overhead surgical light. Results: Camera settings were set to 1080p video resolution. The 25 mm lens allowed for nine times the magnification as the GoPro stock lens. There was no noticeable video distortion. The entire cost was less than 600 USD. Conclusion: The adapted GoPro Hero 4 with a 25 mm lens allows for high-definition, cost-effective, portable video capture of oculoplastic and strabismus surgery. The 25 mm lens allows for detailed videography that can enhance surgical teaching and self-examination. Keywords: teaching, oculoplastic, strabismus

  9. Surgical video recording with a modified GoPro Hero 4 camera.

    Lin, Lily Koo

    2016-01-01

    Surgical videography can provide analytical self-examination for the surgeon, teaching opportunities for trainees, and allow for surgical case presentations. This study examined if a modified GoPro Hero 4 camera with a 25 mm lens could prove to be a cost-effective method of surgical videography with enough detail for oculoplastic and strabismus surgery. The stock lens mount and lens were removed from a GoPro Hero 4 camera, and was refitted with a Peau Productions SuperMount and 25 mm lens. The modified GoPro Hero 4 camera was then fixed to an overhead surgical light. Camera settings were set to 1080p video resolution. The 25 mm lens allowed for nine times the magnification as the GoPro stock lens. There was no noticeable video distortion. The entire cost was less than 600 USD. The adapted GoPro Hero 4 with a 25 mm lens allows for high-definition, cost-effective, portable video capture of oculoplastic and strabismus surgery. The 25 mm lens allows for detailed videography that can enhance surgical teaching and self-examination.

  10. GoPro Hero Cameras for Creation of a Three-Dimensional, Educational, Neurointerventional Video.

    Park, Min S; Brock, Andrea; Mortimer, Vance; Taussky, Philipp; Couldwell, William T; Quigley, Edward

    2017-10-01

    Neurointerventional education relies on an apprenticeship model, with the trainee observing and participating in procedures with the guidance of a mentor. While educational videos are becoming prevalent in surgical cases, there is a dearth of comparable educational material for trainees in neurointerventional programs. We sought to create a high-quality, three-dimensional video of a routine diagnostic cerebral angiogram for use as an educational tool. A diagnostic cerebral angiogram was recorded using two GoPro HERO 3+ cameras with the Dual HERO System to capture the proceduralist's hands during the case. This video was edited with recordings from the video monitors to create a real-time three-dimensional video of both the actions of the neurointerventionalist and the resulting wire/catheter movements. The final edited video, in either two or three dimensions, can serve as another instructional tool for the training of residents and/or fellows. Additional videos can be created in a similar fashion of more complicated neurointerventional cases. The GoPro HERO 3+ camera and Dual HERO System can be used to create educational videos of neurointerventional procedures.

  11. Video Capture of Plastic Surgery Procedures Using the GoPro HERO 3+

    Steven Nicholas Graves, MA

    2015-02-01

    Conclusions: The GoPro HERO 3+ Black Edition camera enables high-quality, cost-effective video recording of plastic and reconstructive surgery procedures. When set to a narrow field of view and automatic white balance, the camera is able to sufficiently compensate for the contrasting light environment of the operating room and capture high-resolution, detailed video.

  12. Introducing Statistical Research to Undergraduate Mathematical Statistics Students Using the Guitar Hero Video Game Series

    Ramler, Ivan P.; Chapman, Jessica L.

    2011-01-01

    In this article we describe a semester-long project, based on the popular video game series Guitar Hero, designed to introduce upper-level undergraduate statistics students to statistical research. Some of the goals of this project are to help students develop statistical thinking that allows them to approach and answer open-ended research…

  13. Eco-Heroes and Eco-Villains: An Archetypal Analysis of Environmental Film, 1950-2010

    Roberts, Candice D.; Stein, Susan

    2015-01-01

    Archetypes are characters recognizable by media consumers that operate at a subconscious level and often elicit strong emotional responses. Popular Hollywood films addressing issues of the environment offer hero and villain figures that demonstrate strong archetypal characteristics. Surrounding the intricate characters, many of these films also…

  14. Montana Proficiency Events Handbook. FHA HERO: Future Homemakers of America toward New Horizons.

    McGregor, Linda, Ed.; Quickenden, Sandy, Ed.

    This handbook contains directions for FHA/HERO (Future Homemakers of America/Home Economics Related Occupations) participation activities in Montana. Participation activities are local, state, and national level competitions involving students in vocational home economics programs. The handbook provides a general overview of participation…

  15. Hero/Heroine Modeling for Puerto Rican Adolescents: A Preventive Mental Health Intervention.

    Malgady, Robert G.; And Others

    1990-01-01

    Developed hero/heroine intervention based on adult Puerto Rican role models to foster ethnic identity, self-concept, and adaptive coping behavior. Screened 90 Puerto Rican eighth and ninth graders for presenting behavior problems in school and randomly assigned them to intervention or control groups. After 19 sessions, intervention significantly…

  16. Six Small Boys and Marshall Dillon: Contribution of Hero Identification to Improved In School Behavior

    Whiting, Anita

    1970-01-01

    Summarized are several theoretical positions on identification, together with one application in a case study. An autographed picture of their hero was presented to each of six uncerachieving and disruptive boys in an effort to provide an interested" adult role model for them. The school staff reinforced this identification with projects in which…

  17. Warrior Heroes and Little Green Men: Soldiers, Military Training, and the Construction of Rural Masculinities.

    Woodward, Rachel

    2000-01-01

    Examines military training in the United Kingdom; the construction of military masculinities, particularly the ideal type of the warrior hero; and the role of the countryside (as the training location) and rurality (as a social construction) in that process. Argues that becoming an infantry soldier means being molded to this hegemonic model of…

  18. Teaching Global Change in Local Places: The HERO Research Experiences for Undergraduates Program

    Yarnal, Brent; Neff, Rob

    2007-01-01

    The Human-Environment Research Observatory (HERO) Research Experience for Undergraduates (REU) program aimed to develop the next generation of researchers working on place-based human-environment problems. The program followed a cooperative learning model to foster an integrated approach to geographic research and to build collaborative research…

  19. The ritual person as a hero in J. P. Clark's Ozidi | Eghagha | Lagos ...

    Within the microcosmos of J.P. Clark's epic-drama Ozidi, a man can become a hero by fulfilling the demands of ritual. Ozidi is a posthumous avenger, bom to set right the wrong committed by conspirators who had murdered his father in cold blood. By avenging his father's death, he gives the man honour and prestige among ...

  20. Wellbeing in the Secondary Music Classroom: Ideas from Hero's Journeys and Online Gaming

    Countryman, June; Stewart Rose, Leslie

    2017-01-01

    This paper explores the idea that wellbeing and healthy development should be the central goal of school music programs. After establishing a framework of student wellbeing, the metaphor of rites of passage experiences is employed--through Joseph Campbell's hero's journey and Jane McGonigal's analysis of the benefits of online gaming--as one way…

  1. 75 FR 56858 - Improvements to the Supplemental Security Income Program-Heroes Earnings Assistance and Relief...

    2010-09-17

    ... number, 1-800-772-1213, or TTY 1-800-325-0778, or visit our Internet site, Social Security Online, at... SOCIAL SECURITY ADMINISTRATION 20 CFR Part 416 [Docket No. SSA-2009-0017] RIN 0960-AH00 Improvements to the Supplemental Security Income Program--Heroes Earnings Assistance and Relief Tax Act of 2008...

  2. KrygsheldelWar Heroes LT A.W. BEAUCHAMP-PROCTOR - DIE ...

    Many millions of words have been written abour heroes and many more will be written in the future, but this article about the late Captain Andrew Weatherby Beauchamp-Proctor, VC., 050.,. MC.(Bar), OFC., is special because he was the only South African among nineteen pilots to win the Victoria Cross during the First ...

  3. From Heroes and Heroines to Hermaphrodites: Emasculation or Emancipation of School Leaders and Leadership?

    Sugrue, Ciaran

    2009-01-01

    In the fast paced, fluid contemporary world, and in a headlong rush to invent the future, there is a tendency to jettison aspects of the past as flotsam and jetsam, unworthy of a place in steerage into the future. This paper argues that is some respects the ordinary heroes and heroines who enact school leaderships, and from their practice…

  4. Victims, Heroes, and Just Plain Folks (Teaching and Learning about Cultural Diversity).

    Miller, Howard M., Ed.

    1998-01-01

    Argues that multicultural education, if it is to be effective and meaningful, needs to be woven throughout the curriculum. Discusses 11 children's books that take into account the age and maturity level of students as they tell forthright stories of the victims, heroes, and just plain folks of the Holocaust, slavery, and the involuntary of…

  5. The American Hero in Children's Literature: A Standards-Based Approach

    Butzow, Carol; Butzow, John

    2005-01-01

    By means of 30 children's picture books--with stories set in times ranging from the early settlement of American until today--this book explores the characteristics of American heroes and the ways in which they have influenced our history, our way of life, and the principles upon which our culture has developed.

  6. Stories, Heroes and Commercials. Spreading the Message across with a New Type of Responsibility

    Ana ADI

    2015-12-01

    Full Text Available Stories have always been a form of communication, the first form of narrative we have encountered in early childhood. And although we have grown up they continue to fascinate us. They maintain and recreate bonds with old traditions, legends, archetypes, myths and symbols. In analyzing stories, Joseph Campbell (2008 proposed the monomyth or the Hero's Journey, a basic pattern, which comprises fundamental stages and structures identifiable in all narratives from different cultures and ages. Although the pattern was further refined and enriched according to the specifics of the narrative (myth, fairy tale, dream, movie etc. the common structural elements of the Hero's Journey from the ordinary world to a challenging and unfamiliar world include: the departure, the initiation and the return. Picking up on Campbell’s model, Sachs (2012 proposes a circular representation of the hero and his/her journey. In this model, a new character, the mentor, plays a pivotal role in the shaping of the hero and his/her transformation. It is the mentor that supports the hero in her/his taking the call to adventure as well as in providing the needed support for crossing the thresholds to the supernatural world and back. Based on what Sachs (2012 suggests that brands could use storytelling as a means to engage with consumers. In doing so he argues that brands should reflect and adopt the role of mentors in their consumers’ journeys, guiding them through the challenges on their own world and contributing to their personal fulfillment. This paper aims to evaluate four stories, all focused on women and empowerment and as a result our discussion focuses mainly on the position of the brand within the story and its role. This, we believe, may contribute to a new trend focused on the adoption and applications of empowerment storytelling.

  7. Calibration of the High Energy Replicated Optics to Explore the Sun (HEROES) Hard X-ray Telescope

    Wilson-Hodge, Colleen A.; Gaskin, Jessica; Christe, Steven; Shih, Albert; Tennant, Allyn; Swartz, Doug; Kilaru, Kiranmayee; Elsner, Ron; Kolodziejczak, Jeff; Ramsey, Brian

    2014-01-01

    On September 21-22, 2013, the High Energy Replicated Optics to Explore the Sun (HEROES) hard X-ray telescope, flew as a balloon payload from Ft. Sumner, N.M. HEROES observed the Sun, the black hole binary GRS 1915+105, and the Crab Nebula during its 27 hour flight. In this paper we describe laboratory calibration measurements of the HEROES detectors using line and continuum sources, applications of these measurements to define channel to energy (gain) corrections for observed events and to define detector response matrices. We characterize the HEROES X-ray grazing incidence optics using measurements taken in the Stray-Light (SLF) Facility in Huntsville, AL, and using ray traces.

  8. Nymphal and adult performance of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae), as a potential alternative host for egg parasitoids multiplication

    Peres, Wilsimar A.A.; Correa-Ferreira, Beatriz S.

    2001-01-01

    This research aimed to evaluate the potential of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) as host for multiplication of egg parasitoids, by determining the nymphal and adult performance of E. heros from laboratory and the field, comparing with Nezara viridula (L.) (Hemiptera: Pentatomidae), under mass conditions. One hundred eggs of E. heros and N. viridula were placed among the leaves of soybean plants contained in cages (50x50x70 cm) and observation were made until adult emergence. The nymphs fed on soybean pods, dry soybean and peanuts seeds. The number of nymphs that reached adulthood and the development time were calculated. The survivorship and reproduction performance of laboratory and field populations of E. heros and N. viridula were evaluated during 13 weeks in February-May 1999. The number of eggs produced by 100 pairs of stink bugs per cage containing the same diet was recorded. Nymphal development time of E. heros and N. viridula was 33.0 and 34.0 days and 65.0% and 71.3% of nymphs reached adulthood, respectively. Adults of E. heros reared under laboratory conditions produced 2.5 times more eggs (5547.0 eggs/cage) than those collected in the field (2262.7 eggs/cage). The adult field population of E. heros had reduced reproduction and longevity due to parasitism by Hexacladia smithii Ash. (Hymenoptera: Encyrtidae). The N. viridula adults collected in the field produced 1.7 times more eggs (6304.9 eggs/cage) than those reared in the laboratory (3609.2 eggs/cage). E. heros laboratory reared is a promising host for egg parasitoids multiplication when compared with N. viridula collected in the field. (author)

  9. Nymphal and adult performance of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae), as a potential alternative host for egg parasitoids multiplication

    Peres, Wilsimar A.A. [Universidade Federal do Parana, Curitiba, PR (Brazil). Dept. de Zoologia; Correa-Ferreira, Beatriz S. [EMBRAPA, Londrina, PR (Brazil). Centro Nacional de Pesquisa de Soja

    2001-12-15

    This research aimed to evaluate the potential of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) as host for multiplication of egg parasitoids, by determining the nymphal and adult performance of E. heros from laboratory and the field, comparing with Nezara viridula (L.) (Hemiptera: Pentatomidae), under mass conditions. One hundred eggs of E. heros and N. viridula were placed among the leaves of soybean plants contained in cages (50x50x70 cm) and observation were made until adult emergence. The nymphs fed on soybean pods, dry soybean and peanuts seeds. The number of nymphs that reached adulthood and the development time were calculated. The survivorship and reproduction performance of laboratory and field populations of E. heros and N. viridula were evaluated during 13 weeks in February-May 1999. The number of eggs produced by 100 pairs of stink bugs per cage containing the same diet was recorded. Nymphal development time of E. heros and N. viridula was 33.0 and 34.0 days and 65.0% and 71.3% of nymphs reached adulthood, respectively. Adults of E. heros reared under laboratory conditions produced 2.5 times more eggs (5547.0 eggs/cage) than those collected in the field (2262.7 eggs/cage). The adult field population of E. heros had reduced reproduction and longevity due to parasitism by Hexacladia smithii Ash. (Hymenoptera: Encyrtidae). The N. viridula adults collected in the field produced 1.7 times more eggs (6304.9 eggs/cage) than those reared in the laboratory (3609.2 eggs/cage). E. heros laboratory reared is a promising host for egg parasitoids multiplication when compared with N. viridula collected in the field. (author)

  10. On the formation of the novel “A Hero of Our Time”

    Nikishov Yuri Mikhailovich

    2015-10-01

    Full Text Available This is a new version of a story of Lermontov’s “A Hero of Our Time” creation. The story begins in the end of 1837 with creation of an independent tale (novella “Taman”. Creative success stimulated Lermontov to continue work in the genre of notes as it is reflected in the subtitle of journal publication of “Bela”: “From the notes of a military officer on the Caucasus”. But the new story has changed the original plan. Now the figure of the hero became the basis for the cycle. The book has integrity, which is not provided by the initial strict plan. It is based on dialog links of the cycle novels.

  11. Signos Vitales de los CDC-Epidemia de heroína (Heroin Epidemic)

    2015-07-07

    Este podcast se basa en la edición de julio del informe Signos Vitales de los CDC. El consumo de heroína y las muertes por sobredosis relacionadas con esta droga están aumentando. La mayoría de las personas están consumiendo heroína con otras drogas, especialmente analgésicos opioides recetados. Sepa qué se puede hacer para prevenir y tratar el problema.  Created: 7/7/2015 by National Center for Injury Prevention and Control (NCIPC).   Date Released: 7/7/2015.

  12. Considerations on the Media and "Sports Heroes" of Mixed Martial Arts

    Igor Sampaio Pinho Dos Santos

    2015-05-01

    Full Text Available The text presents some considerations about mechanisms used by the media industry in the construction of "sports heroes" of Mixed Martial Arts (MMA. For that, there was a theoretical study and highlighted a few examples of situations experienced by Brazilian MMA athletes to discuss such mechanisms. Thus, it is understood that the sporting spectacle, the use of specialized marketing and sensationalism in the dissemination of information about the lives of these athletes are some of the mechanisms used by the media in the construction of MMA heroes. We conclude that this is one of the most effective strategies to transform the MMA a popular phenomenon, encouraging their consumption sold in Brazilian society.

  13. The LGBT-Heroes in Modern Foreign Fairy Tales (How to Read With Children

    Olga Derkachova

    2017-06-01

    Full Text Available The article is devoted to the LGBT-protagonists as a new type of heroes in modern foreign fairy tales. Such tales are becoming popular in the modern world. So, there is a problem to read or not to read them and if to read how to do it. The best thing is to analyze them not through the LGBT-base, but through the human being. The writers use traditional tale’s plots and heroes and just change sexual nature. LGBT-relationships are typically avoided in children’s books. Such tales put children towards understanding these relationships. They also show that protagonists’ features and acts are more important for readers than their homosexuality. A human with his feelings and acts is the main thing in LGBT-tales.

  14. Economic Injury Level of the Neotropical Brown Stink Bug Euschistus heros (F.) on Cotton Plants.

    Soria, M F; Degrande, P E; Panizzi, A R; Toews, M D

    2017-06-01

    In Brazil, the Neotropical brown stink bug, Euschistus heros (F.) (Hemiptera: Pentatomidae), commonly disperses from soybeans to cotton fields. The establishment of an economic treatment threshold for this pest on cotton crops is required. Infestation levels of adults of E. heros were evaluated on cotton plants at preflowering, early flowering, boll filling, and full maturity by assessing external and internal symptoms of injury on bolls, seed cotton/lint production, and fiber quality parameters. A completely randomized experiment was designed to infest cotton plants in a greenhouse with 0, 2, 4, 6, and 8 bugs/plant, except at the full-maturity stage in which only infestation with 8 bugs/plant and uninfested plants were evaluated. Results indicated that the preflowering, early-flowering, and full-maturity stages were not affected by E. heros. A linear regression model showed a significant increase in the number of internal punctures and warts in the boll-filling stage as the population of bugs increased. The average number of loci with mottled immature fibers was significantly higher at 4, 6, and 8 bugs compared with uninfested plants with data following a quadratic regression model. The seed and lint cotton was reduced by 18 and 25% at the maximum level of infestation (ca. 8 bugs/plant) in the boll-filling stage. The micronaire and yellowing indexes were, respectively, reduced and increased with the increase of the infestation levels. The economic injury level of E. heros on cotton plants at the boll-filling stage was determined as 0.5 adult/plant. Based on that, a treatment threshold of 0.1 adult/plant can be recommended to avoid economic losses.

  15. THE PROBLEM OF BRAZILIAN HERO: 'O GUARANI' IN LITERATURE AND COMICS

    Pascoal Farinaccio

    2015-08-01

    Full Text Available This article aims to analyze the aesthetic and ideological contradictions involved in the literary representation of the genuine Brazilian hero in the novel O Guarani, wrote by José de Alencar, and also in its graphical representation in the adaptation of this book to the language of comics. The context considered is that of a culture deeply marked by inferiority complex arising from its colonial history.

  16. Surgical video recording with a modified GoPro Hero 4 camera

    Lin LK

    2016-01-01

    Lily Koo Lin Department of Ophthalmology and Vision Science, University of California, Davis Eye Center, Sacramento, CA, USA Background: Surgical videography can provide analytical self-examination for the surgeon, teaching opportunities for trainees, and allow for surgical case presentations. This study examined if a modified GoPro Hero 4 camera with a 25 mm lens could prove to be a cost-effective method of surgical videography with enough detail for oculoplastic and strabismus surgery. Me...

  17. Guitar hero: From icon of popular culture to nostalgic self-design

    Popadić Milan

    2013-01-01

    This paper aims to interpret the transformations of the “guitar hero”, from the icon of popular culture to models of nostalgic selfdesign, meaning transformations from generally recognizable figure in the context of popular culture to mimetic patterns based in medium of contemporary technologies. The phrase “guitar hero”, in its basic meaning represents a specific phenomenon in popular culture and popular music of the second half of the twentieth century. Guitar hero is a performer with...

  18. The Gay Artist as Tragic Hero in The Picture of Dorian Gray

    Alley, Henry

    2009-01-01

    In his article "The Gay Artist as Tragic Hero in The Picture of Dorian Gray" Henry M. Alley discusses the central artistic figure in Oscar Wilde's novel, Basil Hallward. As the novel's tragic protagonist, he commands the most pity and fear and serves as the most dynamic member of the dramatis personae. Alley contextualizes his discussion within Aristotle's Poetics, contemporary criticism, as well as Wilde's own comments. In addition, Alley looks at Hallward's attempt to hide or censor his gay...

  19. Heroes and Cowards: Genealogy, Subjectivity and War in the Twenty-First Century

    Peter Lee

    2018-04-01

    Full Text Available From the wars of Ancient Greece to the collapsing Islamic State in the present, the same, apparently timeless protagonists appear and their stories told and re-told: the heroes, cowards and other combatants. This article proposes a framework which combines a Foucauldian genealogical approach with his conception of the subject as both constituted in relation to code-oriented moralities, and creatively self-formed in relation to ethics-oriented moralities (Foucault 1992, pp. 5, 25, to understand how it is possible to speak meaningfully of heroes and cowards in the age of the drone and the jihadist. Section one will explore the applicability of Foucauldian genealogy as the methodological basis for understanding present combatants in the context of war. The second section will assess Foucault’s ‘modes of subjectivation’ and ‘practices of the self’ (Foucault 1992, p. 28, as a means of analyzing the emergence of the subject of war over millennia, with emphasis on the ethical dimension of subjectivity that can be applied to heroes and cowards. Then the third section will use insights from Homer and Augustine to begin to illustrate how Foucault’s genealogical approach and his conception of ethical subjectivity combine to enable heroes and cowards to be meaningfully spoken of and better understood in the domain of war today. The purpose of such a study is to set out the basis on which political genealogy after Foucault can provide a nuanced conceptualization of subjectivity in modern war, as those subjects are formed, claimed, valorized and criticized by competing entities in contemporary political discourse.

  20. Effects of the cyberbullying prevention program media heroes (Medienhelden) on traditional bullying.

    Chaux, Enrique; Velásquez, Ana María; Schultze-Krumbholz, Anja; Scheithauer, Herbert

    2016-01-01

    There is considerable debate over whether cyberbullying is just another form of bullying, or whether it is a problem distinct enough to require specific intervention. One way to explore this issue is to analyze whether programs designed to prevent traditional bullying help prevent cyberbullying, and whether programs designed to prevent cyberbullying prevent traditional bullying. The main goal of the current study was to analyze the spillover effects of the cyberbullying prevention program Media Heroes (Medienhelden) on traditional bullying. Media Heroes promotes empathy, knowledge of risks and consequences, and strategies that allow bystanders to defend victims from cyberbullying. Mixed ANOVAs were conducted comparing pretest and post-test (6 months after intervention) measures of 722 students (ages 11-17) assigned to a long (15 sessions) intervention, a short (1 day) intervention, and a control group. In addition to confirming the previously reported effects on cyberbullying, Media Heroes was found to reduce traditional bullying. Effects were larger for the long-version of the program than for the short 1-day version. No effects were found on victimization by either cyberbullying or traditional bullying. Strategies to complement traditional and cyberbullying prevention efforts are discussed. Aggr. Behav. 42:157-165, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  1. Methodological proposal for the jotted issue of the first epoch of the Hero magazine.

    Maité García Díaz

    2013-07-01

    Full Text Available During the neocolonial republic emerges in Sancti Spiritus a very significative magazine of artistic, literary and scientific sketch: Hero, founded by Jacinto Gomer Fernández-Morera and Anastacio Fernández-Morera del Castillo, it first appeared on December 20th 1907. This issue constitutes a vivid reflect of the commercial, literary, cultural, scientific and historic panorama and above all, of the life of the middle and high class in Sancti Spiritus at the beginning of the XX century. The need to divulge the advantage the texts of Hero constitute for the high school and university students, also to humanistic profile graduates and others, such as investigators, evidenced the need to carry out an investigation that pursued such purposes. That’s why the methodological proposal for the jotted issue of the first epoch of the Hero magazine (1907-1908 takes place, composed by 38 publications, departing from the fundamental theorizations about the jotted issue of the presentation of the methodological proposal on behalf of updating these publication texts for its potential readers.

  2. GoPro HERO 4 Black recording of scleral buckle placement during retinal detachment repair.

    Ho, Vincent Y; Shah, Vaishali G; Yates, David M; Shah, Gaurav K

    2017-08-01

    GoPro and Google Glass technology have previously been used to record procedures in ophthalmology and other medical fields. In this manuscript, GoPro's latest HERO 4 Black edition camera (GoPro Inc, San Mateo, Calif.) will be used to record the placement of a scleral buckle during retinal detachment surgery. GoPro HERO 4 Black edition camera, which records 4K-quality video with a resolution of 3840 (pixels) x 2160 (lines), was mounted on a head strap to record placement of a scleral buckle for a retinal detachment. Excellent video quality was achieved with the 4K SuperView setting. Bluetooth connection with an Apple iPad (Apple Inc, Cupertino, Calif.) provided live streaming and use of the GoPro App. Zoom, horizontal/vertical alignment, exposure, and contrast adjustments were made with postproduction editing on GoPro Studio software. Video recording with the GoPro HERO 4 Black edition camera is an excellent way to document extraocular procedures to improve medical education, self-training, or medicolegal documentation. Copyright © 2017 Canadian Ophthalmological Society. Published by Elsevier Inc. All rights reserved.

  3. Usulan Pengembangan Komunikasi Pemasaran Melalui Strategi Customer Bonding (Studi Kasus : Supermarket Hero di Jakarta

    Ronald Sukwadi

    2012-03-01

    Full Text Available The consequence of competition is the decrease of the number of customers which causes Hero Supermarket closed down several of its outlets. This decrease is also caused by the existence of internal issue of marketing communication (promotion which lacked a strong concept. The ineffective selection of communication channel which in turn fails to conform the activity to the public. For that, the identification in marketing communication activity through Customer Bonding strategy is needed. Through marketing communication program assessment with Customer Bonding (Awareness Bonding, Relationship Bonding, and Advocacy Bonding, intensity of marketing communication problem can be identified, through survey assessment (management and costumer, analyzed with statistical testing like validity and reliability test, Spearman Correlation test and Cross tab test. The questionnaires will be given to 13 respondents from Hero Management by using quota sampling and 100 customers using stratified sampling.               Through marketing communication program assessment using Customer Bonding, marketing communication intensity and correlation analysis between marketing communication program and consumer loyalty are obtained. From this analysis, it is shown that there is noise in marketing communication that influences information sending to customer. Hero must maintain marketing communication program which focuses in marketing program that have competitive advantages. Beside that, evaluation has always to be done in order to improve customer loyalty. Keywords: communication, customer bonding, loyalty

  4. Ablaze: The story of the heroes and victims of Chernobyl

    Read, P.P.

    1993-01-01

    This is a book about the accident at the Chernobyl reactor number 4. Work on this book was begun in early 1991, following many of the political changes inside the USSR, and as a consequence the western author was able to gain access to information, and people, who were not available to earlier authors. The book looks briefly at the Russian nuclear program, looks in much more detail at the accident, what lead up to it, the accident itself, the immediate response, and follow up. It examines the impact of the accident on the people involved, the area around the plant, that part of the USSR, and the world as a whole. It looks at the reasons behind the USSR nuclear program, and the implications for nuclear power generation, and needs, within the USSR. It tries to give a balanced view of the magnitude of the problem, weighed against the energy needs of the country, and the pervasive fear of nuclear energy

  5. Hemodialysis Reliable Outflow (HeRO) device in end-stage dialysis access: a decision analysis model.

    Dageforde, Leigh Anne; Bream, Peter R; Moore, Derek E

    2012-09-01

    The Hemodialysis Reliable Outflow (HeRO) dialysis access device is a permanent tunneled dialysis graft connected to a central venous catheter and is used in patients with end-stage dialysis access (ESDA) issues secondary to central venous stenosis. The safety and effectiveness of the HeRO device has previously been proven, but no study thus far has compared the cost of its use with tunneled dialysis catheters (TDCs) and thigh grafts in patients with ESDA. A decision analytic model was developed to simulate outcomes for patients with ESDA undergoing placement of a HeRO dialysis access device, TDC, or thigh graft. Outcomes of interest were infection, thrombosis, and ischemic events. Baseline values, ranges, and costs were determined from a systematic review of the literature. Total costs were based on 1 year of post-procedure outcomes. Sensitivity analyses were conducted to test model strength. The HeRO dialysis access device is the least costly dialysis access with an average 1-year cost of $6521. The 1-year cost for a TDC was $8477. A thigh graft accounted for $9567 in a 1-year time period. The HeRO dialysis access device is the least costly method of ESDA. The primary determinants of cost in this model are infection in TDCs and leg ischemia necessitating amputation in thigh grafts. Further study is necessary to incorporate patient preference and quality of life into the model. Copyright © 2012 Elsevier Inc. All rights reserved.

  6. Nuclear reactors

    Barre, Bertrand

    2015-10-01

    After some remarks on the nuclear fuel, on the chain reaction control, on fuel loading and unloading, this article proposes descriptions of the design, principles and operations of different types of nuclear reactors as well as comments on their presence and use in different countries: pressurized water reactors (design of the primary and secondary circuits, volume and chemistry control, backup injection circuits), boiling water reactors, heavy water reactors, graphite and boiling water reactors, graphite-gas reactors, fast breeder reactors, and fourth generation reactors (definition, fast breeding). For these last ones, six concepts are presented: sodium-cooled fast reactor, lead-cooled fast reactor, gas-cooled fast reactor, high temperature gas-cooled reactor, supercritical water-cooled reactor, and molten salt reactor

  7. Storage of Euschistus heros Eggs (Fabricius) (Hemiptera: Pentatomidae) in Liquid Nitrogen for Parasitization by Telenomus podisi Ashmead (Hymenoptera: Platygastridae).

    Favetti, B M; Butnariu, A R; Doetzer, A K

    2014-06-01

    Records in the literature with regard to the influence of freezing of pentatomid eggs on parasitism by microhymenopterans are scarce. In this research, we compared the storage of Euschistus heros (Fabricius) (Hemiptera: Pentatomidae) eggs in liquid nitrogen for different periods with the objective of optimizing the multiplication of Telenomus podisi Ashmead (Hymenoptera: Platygastridae) in the laboratory. Fresh eggs of E. heros were exposed (S3, S6) or not (NS3, NS6) to UV light for 30 min and stored in 1.5-mL plastic vials in liquid nitrogen either for 3 (S3, NS3) or 6 months (S6, NS6), and egg suitability to parasitoid development was compared to control eggs exposed (SC) or not (NSC) to UV treatment. Global data analysis showed that E. heros eggs stored in liquid nitrogen with or without UV treatment, for 3 or 6 months, were suitable for T. podisi parasitization.

  8. Results of a customer-based, post-market surveillance survey of the HeRO access device.

    Fusselman, Maureen

    2010-08-01

    In order to supplement post-market surveillance data on the HeRO vascular access device, a non-scientific customer survey was conducted to obtain quantitative data from dialysis providers caring for patients implanted with the device. Dialysis nurses involved in the care of HeRO patients were contacted in order to obtain post-implant device performance information for 10% of patients implanted with the device at the time of the survey. Thirty-eight dialysis units with a total of 65 HeRO patients participated in the survey. The total duration of HeRO device use was 348.4 months with an average use of 5.4 months. Thirty-eight of the 65 HeRO patients (58.5%) were reported to not have experienced any performance issues. There were 28 device performance incidents reported for the remaining 27 patients included in the survey. Occlusion was the single most commonly reported device-related performance issue with 18 patients (27.7%) experiencing 25 occlusive episodes. The majority of the patients who had an occlusion (66.7%) only experienced one occlusive event. Infections occurred in 4 patients (6.2%) with an overall infection rate of 0.38 per 1,000 patient days. Post-market clinical experience during the first 18 months of commercialization of the HeRO device were in line with expectations based on the results from initial clinical studies with the device. Device occlusion remains the most commonly reported performance issue with the reported rate in this survey less than that which was reported in earlier published studies with the device.

  9. Video Capture of Plastic Surgery Procedures Using the GoPro HERO 3+.

    Graves, Steven Nicholas; Shenaq, Deana Saleh; Langerman, Alexander J; Song, David H

    2015-02-01

    Significant improvements can be made in recoding surgical procedures, particularly in capturing high-quality video recordings from the surgeons' point of view. This study examined the utility of the GoPro HERO 3+ Black Edition camera for high-definition, point-of-view recordings of plastic and reconstructive surgery. The GoPro HERO 3+ Black Edition camera was head-mounted on the surgeon and oriented to the surgeon's perspective using the GoPro App. The camera was used to record 4 cases: 2 fat graft procedures and 2 breast reconstructions. During cases 1-3, an assistant remotely controlled the GoPro via the GoPro App. For case 4 the GoPro was linked to a WiFi remote, and controlled by the surgeon. Camera settings for case 1 were as follows: 1080p video resolution; 48 fps; Protune mode on; wide field of view; 16:9 aspect ratio. The lighting contrast due to the overhead lights resulted in limited washout of the video image. Camera settings were adjusted for cases 2-4 to a narrow field of view, which enabled the camera's automatic white balance to better compensate for bright lights focused on the surgical field. Cases 2-4 captured video sufficient for teaching or presentation purposes. The GoPro HERO 3+ Black Edition camera enables high-quality, cost-effective video recording of plastic and reconstructive surgery procedures. When set to a narrow field of view and automatic white balance, the camera is able to sufficiently compensate for the contrasting light environment of the operating room and capture high-resolution, detailed video.

  10. The Social Perception of Heroes and Murderers: Effects of Gender-Inclusive Language in Media Reports

    Hansen, Karolina; Littwitz, Cindy; Sczesny, Sabine

    2016-01-01

    The way media depict women and men can reinforce or diminish gender stereotyping. Which part does language play in this context? Are roles perceived as more gender-balanced when feminine role nouns are used in addition to masculine ones? Research on gender-inclusive language shows that the use of feminine-masculine word pairs tends to increase the visibility of women in various social roles. For example, when speakers of German were asked to name their favorite “heroine or hero in a novel,” t...

  11. Architecture of Stalingrad: the image of the hero city by the language of "Stalinist Empire style"

    Ptichnikova, Galina; Antyufeev, Alexey

    2018-03-01

    The article is dedicated to the peculiarities of the architecture of "Stalinist Empire style" by the example of Stalingrad architecture. This city was restored again after Stalingrad battle which took place in the period of 1942-1943, in accordance with the principals of socialist urban construction. Reconstruction of Stalingrad is considered by the authors of the article as the creation of a new type of a Soviet city - a Hero City. The authors reveal the artistic features of architectural ensembles and buildings designed according to the principles of "Stalinist Empire style".

  12. Christopher R. Fee & David A. Leeming. Gods, Heroes, and Kings. The Battle for Mythic Britain

    Sophie ALATORRE

    2006-06-01

    Full Text Available A reassessment of British mythology has long been overdue, and Gods, Heroes and Kings is to be regarded as a stimulating contribution which helps to situate Anglo-Saxon tales in the mainstream of Medieval literature. Myths, pagan and Judeo-Christian beliefs, classical narratives: such vast material forms the backcloth Christopher F. Fee and David A. Leeming have undertaken to explore, thanks to an erudite comparative approach. Obviously, their book first aims at giving readers a new image of ...

  13. Batman - A hero of the American monomyth : An exploration of comic book superheroes

    Paalanen, Pekka Johan Karoly

    2012-01-01

    Heroes play an integral part in fiction in our society, especially within the realm of comic books and their film adaptations. Joseph Campbell introduced the concept of the “classic monomyth”; an underlying narrative structure and a heroic archetype whose characteris-tics are apparent in every mythical story from Prometheus to Luke Skywalker. The clas-sical monomyth is an underlying narrative of how a heroic figure travels out into a world of wonder on an adventure, returns and finds his/her ...

  14. Blood hero: An application for encouraging the blood donation by applying gamification.

    Domingos, Daniela C L; Lima, Luis F S G; Messias, Thiago F; Feijo, Jose V L; Diniz, Anthony A R; Soares, Heliana B

    2016-08-01

    There is a strong need for actions to supply the blood demand in the World. Based on this fact, it was designed an application, named `Blood Hero', by applying the `gamification' concept, which allows users to be rewarded by social acts related to the blood donation. It takes advantage of the application of mobile devices, implementing a specific social network, to attract and retain blood donators. This application makes possible an interaction between users and blood centers, and is being tested aiming at evaluating its acceptance and impact in bloodstocks.

  15. Conception, complicated pregnancy, and labour of gods and heroes in Greek mythology.

    Iavazzo, Christos; Trompoukis, Constantinos; Sardi, Thalia; Falagas, Matthew E

    2008-01-01

    Pregnancy and labour are holy moments in a woman's life. Even in Greek mythology we can find descriptions of them. We searched in the Greek myths to find descriptions of labours of ancient heroes and gods. We identified descriptions of extracorporeal fertilization, superfecundation, ectopic pregnancy, preterm labour, prolonged pregnancy and Caesarean section. The use of imagination could help the reader to find similarities in present or future developments in the field of obstetrics. It could be concluded that various aspects of modern obstetrical practice are described in Greek mythology.

  16. "Tugboat Annie:" nursing's hero of Pearl Harbor--Grace Lally (1897-1983).

    Hawkins, J W; Matthews, I

    1991-01-01

    In 1991 we will mark the 50th anniversary of the Japanese attack on Pearl Harbor. Few nurses know that the Chief Nurse aboard the USS Solace, the only hospital ship in port on that fateful day, played a critical role in caring for the survivors. Grace Lally's calm, professional manner, along with her sensitivity to the needs of her patients, her 12 nurses, and the crew of the Solace made her a hero. This study is an investigation of her role on December 7, 1941, and her contributions as a career military nurse.

  17. HERO: a space based low frequency interferometric observatory for heliophysicsenabled by novel vector sensor technology

    2017-04-07

    baseline of HeRO-S or HeRO-G will detect type II and III solar bursts over several decades of intensity and frequency. Shown for comparison are an...and disturbances in a key region of the helio-11 sphere, from two to tens of solar radii, using interferometric observations of solar12 radio bursts at...fronts14 will be traced via type II burst emissions, and heliospheric magnetic field geometries15 will be probed by measuring precise trajectories of type

  18. Cost analysis of the Hemodialysis Reliable Outflow (HeRO) Graft compared to the tunneled dialysis catheter.

    Al Shakarchi, Julien; Inston, Nicholas; Jones, Robert G; Maclaine, Grant; Hollinworth, David

    2016-04-01

    In end-stage renal disease patients with central venous obstruction, who have limited vascular access options, the Hemodialysis Reliable Outflow (HeRO) Graft is a new alternative with a lower incidence of complications and longer effective device life compared to tunneled dialysis catheters (TDCs). We undertook an economic analysis of introducing the HeRO Graft in the UK. A 1-year cost-consequence decision analytic model was developed comparing management with the HeRO Graft to TDCs from the perspective of the National Health Service in England. The model comprises four 3-month cycles during which the vascular access option either remains functional for hemodialysis or fails, patients can experience access-related infection and device thrombosis, and they can also accrue associated costs. Clinical input data were sourced from published studies and unit cost data from National Health Service 2014-15 Reference Costs. In the base case, a 100-patient cohort managed with the HeRO Graft experienced 6 fewer failed devices, 53 fewer access-related infections, and 67 fewer device thromboses compared to patients managed with TDCs. Although the initial device and placement costs for the HeRO Graft are greater than those for TDCs, savings from the lower incidence of device complications and longer effective device patency reduces these costs. Overall net annual costs are £2600 for each HeRO Graft-managed patient compared to TDC-managed patients. If the National Health Service were to reimburse hemodialysis at a uniform rate regardless of the type of vascular access, net 1-year savings of £1200 per patient are estimated for individuals managed with the HeRO Graft. The base case results showed a marginal net positive cost associated with vascular access with the HeRO Graft compared with TDCs for the incremental clinical benefit of reductions in patency failures, device-related thrombosis, and access-related infection events in a patient population with limited options for

  19. Use of artificial substrates of different colors for oviposition by the brown stink bug Euschistus heros (Hemiptera, Pentatomidae

    Diones Krinski

    2013-09-01

    Full Text Available Aiming to contribute to a rearing methodology for the brown stink bug, Euschistus heros, in the laboratory, we evaluated oviposition on artificial substrates of different colors. During six days, oviposition was evaluated daily, by counting the total number of eggs, number of clutches, and eggs/clutch. Females laid 12,463 eggs, in 1,677 clutches, resulting in an average of 7.28 ± 0.44 eggs/clutch. Black, brown, and green felt had the most eggs and clutches. The results demonstrated that many colors are suitable as oviposition substrate for E. heros, providing information for the mass rearing of this insect.

  20. H Reactor

    Federal Laboratory Consortium — The H Reactor was the first reactor to be built at Hanford after World War II.It became operational in October of 1949, and represented the fourth nuclear reactor on...

  1. URBAN COMMUNITY RESPONSES TO VISUAL APPROPRIATE THEMATIC DESIGN, SUPER HERO PARK BANDUNG

    Dian Duhita

    2017-06-01

    Full Text Available Parks is one of city public area that serves as a communal place for city community. On another perspective, parks is an architectural design that is designed with an aesthetic element to attract. Bandung, since a few years was to make improvements in various sectors, especially in the public space. Through the slogan Creative City, Bandung City Government revived communities part of the citizens by providing place for a activities, creation and production. Thematic Parks became one of the alternative approaches responsive design as part of creative cities development. Object of research study object is Super Hero park. The purpose of research is to analyzing the response of communities to design a thematic park. The study was conducted with a qualitative approach through participation observation method. The scope of the research includes visual appropriate and city community response. The conclussion obtain that visual appropriate are in accordance with the theme. Urban Community was able to respond well the identity of Super Hero park with visual appropriate design.

  2. Heroes or Health Victims?: Exploring How the Elite Media Frames Veterans on Veterans Day.

    Rhidenour, Kayla B; Barrett, Ashley K; Blackburn, Kate G

    2017-11-27

    We examine the frames the elite news media uses to portray veterans on and surrounding Veterans Day 2012, 2013, 2014, and 2015. We use mental health illness and media framing literature to explore how, why, and to what extent Veterans Day news coverage uses different media frames across the four consecutive years. We compiled a Media Coverage Corpora for each year, which contains the quotes and paraphrased remarks used in all veterans news stories for that year. In our primary study, we applied the meaning extraction method (MEM) to extract emergent media frames for Veterans Day 2014 and compiled a word frequency list, which captures the words most commonly used within the corpora. In post hoc analyses, we collected news stories and compiled word frequency lists for Veterans Day 2012, 2013, and 2015. Our findings reveal dissenting frames across 2012, 2013, and 2014 Veterans Day media coverage. Word frequency results suggest the 2012 and 2013 media frames largely celebrate Veterans as heroes, but the 2014 coverage depicts veterans as victimized by their wartime experiences. Furthermore, our results demonstrate how the prevailing 2015 media frames could be a reaction to 2014 frames that portrayed veterans as health victims. We consider the ramifications of this binary portrayal of veterans as either health victims or heroes and discuss the implications of these dueling frames for veterans' access to healthcare resources.

  3. PLATO’S INVISIBLE HERO OF DEMOCRACY: SOCRATES IN THE REPUBLIC AND CRITO

    RICHARD J. KLONOSKI

    2014-11-01

    Full Text Available The author argues that a careful reading of Republic VIII 557a-558a, coupled with an analysis of the mythic backdrop to the conversation between Socrates and Crito in the Crito, reveals that Plato intends the reader to see Socrates as an invisible moral and political hero of the democratic polis even though Socrates was, for much of his life, a critic of the Athenian democracy, and even given the fact that Socrates doesn’t give democracy the highest standing among the political regimes in the Republic. The author discusses the myth of Theseus and the Minotaur and Hesiod’s races of man, in order to show that in the Republic and the Crito Socrates is portrayed as a hero, specifically one who supports democracy as the only regime in which philosophy and the philosopher can exist. Finally, the author argues that Socrates’ final act of heroism in the Crito is the act of remaining in prison, in large measure out of respect for the laws of Athens and its democratic legal procedures, a respect evident in the very structure of the conversation among Socrates, Crito, and the Athenian laws. It is suggested that the conversation in the Crito is indeed an imitation of a democratic legal procedure that would likely have been used to convict Socrates of a crime against the democracy were he to have followed Crito’s advice and escaped from prison.

  4. A Positive Psychology Intervention in a Hindu Community: The Pilot Study of the Hero Lab Curriculum.

    Sundar, Siddhi; Qureshi, Adil; Galiatsatos, Panagis

    2016-12-01

    India has high rates of mental health issues among its youth and low-income communities experience a disproportionate amount of depression and suicide. Positive psychology, the act of promoting well-being, could be used as a tool to promote wellness and help improve the mental health of youth living in slum areas of India. A pilot positively psychology program, "The Hero Lab", was conducted in a migratory slum in Worli, Mumbai, with trained Hindu community leaders implementing the interventions toward at-risk Hindu youth. The curriculum's impact showed statistical improvement (p < 0.001) in happiness (General Happiness Scale from 11.24 ± 1.56 to 19.08 ± 3.32), grit (Grit Survey from 2.23 ± 0.34 to 3.24 ± 0.67), empathy (Toronto Empathy Questionnaire from 24.92 ± 3.27 to 41.96 ± 8.41), and gratitude (Gratitude Survey from 16.88 ± 3.47 to 27.98 ± 6.59). While a pilot study, the Hero Lab curriculum demonstrates that positive psychology interventions may be an important tool in improving mental health in at-risk children.

  5. How many new cancer patients in Europe will require radiotherapy by 2025? An ESTRO-HERO analysis

    Borras, Josep M; Lievens, Yolande; Barton, Michael

    2016-01-01

    BACKGROUND: The objective of this HERO study was to assess the number of new cancer patients that will require at least one course of radiotherapy by 2025. METHODS: European cancer incidence data by tumor site and country for 2012 and 2025 was extracted from the GLOBOCAN database. The projection ...

  6. The Effect of Autoclave Sterilization on Resistance to Cyclic Fatigue of Hero Endodontic File #642 (6%) at Two Artificial Curvature.

    Khabiri, Masoud; Ebrahimi, Maziar; Saei, Mohammad Reza

    2017-12-01

    File fracture can interfere with cleaning and shaping of the canal and compromise periradicular healing. Autoclave sterilization may prone the files to fracture. The purpose of the present study was to determine the effect of autoclave sterilization on the cyclic fatigue resistance of Hero642 rotary instrument in two curvatures of 45 and 60 degrees. For this experimental in-vitro study, 90 Nickel-Titanium HERO 642 rotary files #30 with 0.06 taper were selected. They were divided into two groups (curvature of 45 and 60 degree) of 45 files. Each group was then subdivided into 3 subgroups; group I: no sterilization, group II: 5 cycles of sterilization and group III: 10 cycles of sterilization. Files were used in artificial canals until fracture. The cyclic fatigue was measured as the number of cycles before fracture. The data was statically analyzed by Student's t-test and two-way analysis of variance. There was a significant difference in cyclic fatigue of two curvature of 45 and 60 degrees ( p = 0.001). However, sterilization process has no significant effect on cyclic fatigue of HERO files ( p = 0.557). Sterilization had no effect on the cyclic fatigue of HERO 642 files when used in curvature of 45 or 60 degrees.

  7. The doctor(s) in house: an analysis of the evolution of the television doctor-hero.

    Strauman, Elena C; Goodier, Bethany C

    2011-03-01

    The medical drama and its central character, the doctor-hero have been a mainstay of popular television. House M.D. offers a new (and problematic) iteration of the doctor-hero. House eschews the generic conventions of the "television doctor" by being neither the idealized television doctor of the past, nor the more recent competent but often fallible physicians in entertainment texts. Instead, his character is a fragmented text which privileges the biomedical over the personal or emotional with the ultimate goal of scientifically uncovering and resolving instances of disease. This article examines the implicit and explicit messages in House M.D. and critically analyzes both the show and its lead character in relation to the traditional medical drama genre that highlights the "doctor-hero" as the central character. While at first House seems to completely violate narrative and generic norms, ultimately the program provides a new form that reinforces the presence of the doctor-hero, but highlights House's character as the central figure who is personally and interpersonally problematic but biomedically effective.

  8. Biographies of Heroes. Grade 2 Model Lesson for Standard 5. California History-Social Science Course Models.

    Porter, Priscilla

    Students focus on people who make a difference. The unit features men and women whose achievements have had a direct or indirect influence in the students' lives. These individuals include heroes from long ago and the recent past along with people who are currently active in the local community. The unit is crafted around biographies. It aims to…

  9. Evaluation and optimization of the man-machine interface in nuclear power plants using the HEROS procedure in PSA

    Richei, A.; Koch, M.K.; Unger, H.; Hauptmanns, U.

    1998-01-01

    For the probabilistic evaluation and optimization of the man-machine-system a new procedure is developed. This and the resulting expert system, which is based on the fuzzy set theory, is called HEROS, an acronym for Human Error Rate Assessment and Optimizing System. There are several existing procedures for the probabilistic evaluation of human errors, which have several disadvantages. However, in all of these procedures fuzzy verbal expressions are often used for the evaluation of human factors, also in the best known procedures. This use of verbal expressions for describing performance-shaping factors, enabling the evaluation of human factors is the basic approach for HEROS. A model of a modem man-machine-system is the basis of the procedure. Results from ergonomic studies are used to establish a rule-based expert system. HEROS simplifies the importance analysis for the evaluation of human factors, which is necessary for the optimization of the man-machine-system. It can be used in all areas of probabilistic safety assessment. The application of HEROS in the scope of accident management procedures and the comparison with the results of other procedures as an example for the usefulness and substantially more extensive applicability of this new procedure will be shown. (author)

  10. A Study of the Significant Factors That Affect the Job Placement Rates of Students Who Have Completed a HERO Program.

    Instructional Development and Evaluation Associates, Inc., Berkeley, MI.

    A three-year study examined the significant factors that affect the job placement rates of students completing a Home Economics Related Occupations (HERO) program. Other purposes of the study were to develop and pilot test a model that could be used to determine factors related to student placement in a variety of vocational education programs and…

  11. A Formative Evaluation of Healthy Heroes: A Photo Comic Book-Social Cognitive Theory Based Obesity Prevention Program

    Branscum, Paul; Housley, Alexandra; Bhochhibhoya, Amir; Hayes, Logan

    2016-01-01

    Purpose: Low consumption of fruits and vegetables is often associated with poor diet quality, and childhood obesity. The purpose of this study was to assess the feasibility, and conduct a formative evaluation, of Healthy Heroes, an innovative, social cognitive theory-based program that uses child created photo-comic books to promote fruit and…

  12. Everyday Heroes.

    Johnson, Beth

    Designed for low-level adult learners, this book contains true stories of 20 men and women who have faced and overcome serious challenges in their lives. The book is intended to inspire and motivate developmental students in basic reading and writing classes. The book can be adapted to different instructional approaches--some teachers may wish to…

  13. Atilius Regulus: A Tragic Hero in the Culture of the Eighteenth Century

    Stefano Ferrari

    2017-11-01

    Full Text Available Atilius Regulus is one of the many tragic heroes that the classical tradition has handed down to Western culture. His fortune in the eighteenth century, however, is marked by an almost unique peculiarity that specifically measures the transition from ancient to modern age. Unlike other figures, that of the Roman consul is submitted between the second half of the seventeenth century and the end of the eighteenth century to a careful philological examination that has the result not only to reject as historically groundless the famous episode of torture suffered in Carthage, but also that of the embassy held in front of the Rome senate to deal with peace between the two rival cities. Despite the authenticity of this last episode of the life of the Roman consul has been questioned, it has also met in the course of the eighteenth century a huge favor by poets, philosophers, art writers and painters.

  14. Vision Algorithm for the Solar Aspect System of the HEROES Mission

    Cramer, Alexander; Christe, Steven; Shih, Albert

    2014-01-01

    This work covers the design and test of a machine vision algorithm for generating high-accuracy pitch and yaw pointing solutions relative to the sun for the High Energy Replicated Optics to Explore the Sun (HEROES) mission. It describes how images were constructed by focusing an image of the sun onto a plate printed with a pattern of small fiducial markers. Images of this plate were processed in real time to determine relative position of the balloon payload to the sun. The algorithm is broken into four problems: circle detection, fiducial detection, fiducial identification, and image registration. Circle detection is handled by an Average Intersection method, fiducial detection by a matched filter approach, identification with an ad-hoc method based on the spacing between fiducials, and image registration with a simple least squares fit. Performance is verified on a combination of artificially generated images, test data recorded on the ground, and images from the 2013 flight.

  15. The mythic structure in the black dome of the Haftpeikar: Study of Hero's journey in the first dome

    Seyed Kazem Mousavi

    2016-12-01

    Full Text Available Abstract In this paper the Vogler Hero's journey is used for analyzing the mythic structures and hero's journey of the first dome of the Haftpeikar. Vogler Released his founds in the Writer's Journey book. This book that is really dependent on Campbell's Single Myth Theory is a practical guidance for script writing and review of that. The levels of the hero's journey in his book are include: The normal world, invitation to the story, reject the invitation, visit the mentor, passing the first gate, the exams, the allies, the enemies, qualifying to the deepest cave, trial, the reward, the road back, resurrection, return with the elixir.  In this paper, at first the properties of each level of the hero's journey theory are matching with the journey's levels in the black dome story. After that seven useful archetypes including hero, mentor, threshold guardian, herald, shape shifter, the shadow and trickster, are determined in the text.  Black dome has several journeys' cycles. Journey's that are seen in this dome are: (Bahram's journey: A part of the internal journey of Bahram in black dome. (The king's maid journey: Internal journey of the king's maid that wears black clothes after hearing the story. (King of black clothes' journey: The king's journey to the Madhooshan city for exploring the mystery of the black alien. (The reader's journey: This internal journey belongs to the readers of the first dome that learn their lessons through traveling to the character's world. (Nezami's journey: The Nezami's internal journey with composing the text. Checking the reader's journey and black dome's composer is out of this text. While the first and second journey just saying some parts, the black king has completer levels and for affecting on the other journeys is the most important story of the first dome. Therefore at first we check the black king story and we explain the other journeys.  The goal of this paper in addition to the usage of the vogler

  16. Gênero, heroísmo e patriotismo em obras de literatura para crianças

    Rosa Maria Hessel Silveira

    2012-10-01

    Full Text Available No presente artigo analisamos representações de mulher presentes em obrasliterárias destinadas a crianças escolarizadas das primeiras décadas do século XX: CultoCívico, escrita por João Roque Moreira Gomes, que circulou entre professores sul-riograndenses, e Heroínas e Mártires Brasileiras, de autoria de Renato Sêneca Fleury,dedicada principalmente a meninas leitoras. Estas coletâneas de poesia e prosa sãomarcadas por um ideário patriótico e forte inspiração cívica, valores característicos doperíodo. Através de uma análise discursiva, buscamos delinear certo perfil feminino,observando que nos textos examinados figuram mulheres devotadas ao lar e à família, queassumem a maternidade como condição natural e que educam os filhos para o patriotismo,a honradez e o respeito às instituições legais. Figuram ainda mulheres heroínas que, emcontextos de guerra, assumem frentes de combate, lutando ao lado de seus maridos, ouainda, como mulheres consagradas à caridade, atuam em hospitais de campanha, cuidandodos soldados com zelo maternal. Tais obras apresentam e enaltecem acontecimentosprotagonizados por mulheres e homens e, através de exemplos edificantes, colaboram paranaturalizar determinados atributos femininos, ensinando sobre patriotismo e sobre práticasdesejáveis naquele contexto histórico.

  17. Hydroxychloroquine effectiveness in reducing symptoms of hand osteoarthritis (HERO): study protocol for a randomized controlled trial

    2013-01-01

    Background Osteoarthritis (OA) is the most common type of arthritis, causing significant joint pain and disability. It is already a major cause of healthcare expenditure and its incidence will further increase with the ageing population. Current treatments for OA have major limitations and new analgesic treatments are needed. Synovitis is prevalent in OA and is associated with pain. Hydroxychloroquine is used in routine practice for treating synovitis in inflammatory arthritides, such as rheumatoid arthritis. We propose that treating patients with symptomatic hand OA with hydroxychloroquine will be a practical and safe treatment to reduce synovitis and pain. Methods/design HERO is an investigator-initiated, multicentre, randomized, double-blind, placebo-controlled trial. A total of 252 subjects with symptomatic hand OA will be recruited across primary and secondary care sites in the UK and randomized on a 1:1 basis to active treatment or placebo for 12 months. Daily medication dose will range from 200 to 400 mg according to ideal body weight. The primary endpoint is change in average hand pain during the previous two weeks (measured on a numerical rating scale (NRS)) between baseline and six months. Secondary endpoints include other self-reported pain, function and quality-of-life measures and radiographic structural change at 12 months. A health economics analysis will also be performed. An ultrasound substudy will be conducted to examine baseline levels of synovitis. Linear and logistic regression will be used to compare changes between groups using univariable and multivariable modelling analyses. All analyses will be conducted on an intention-to-treat basis. Discussion The HERO trial is designed to examine whether hydroxychloroquine is an effective analgesic treatment for OA and whether it provides any long-term structural benefit. The ultrasound substudy will address whether baseline synovitis is a predictor of therapeutic response. This will potentially

  18. Diapause and different seasonal morphs of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) in Northern Parana State

    Mourao, Ana P. M.; Panizzi, Antonio R.

    2000-01-01

    The Neotropical brown stink bug, Euschistus heros (Fabr.), was collected on sunflower [Helianthus annuus (L.)], soybean [Glycine max (L.) Merrill], star bristle [Acanthospermum hispidum (DC.)], and under fallen leaves of mango tree [Mangifera indica (L.)] and privet (Ligustrum lucidum Ait.), during one year, to evaluate the diapause incidence and the occurrence of different seasonal morphs. The majority of the insects (ca. 90%) with mature reproductive organs was observed during the summer (December-March), when E. heros was found on soybean or on sunflower; in the beginning of autumn, most insects (87%) showed immature reproductive organs, and they were found on star bristle and under fallen leaves. Bugs with mature reproductive organs had more developed shoulders (3.23 and 3.27 mm, for males and females, respectively) than bugs with immature organs (2.91 and 2.89 mm, for males and females, respectively). Two distinct body colors, dark brown and reddish brown, were observed. Nevertheless, the reddish brown was the predominant color of both mature and immature adults during all year. Adults were parasitized by Hexacladia smithii (Ashmead) (Hymenoptera: Encyrtidae) and Tachinidae mainly Trichopoda giacomellii (Blanchard) (Diptera: Tachinidae) (80% and 40% of parasitism in male and female, respectively) during summer (December), when the bugs colonized sunflower. In soybean, 12% of males and 10% of females were parasitized, whereas in fallen leaves, the parasitism rate was 5% in both sexes.These results showed that in autumn/winter (shorter photoperiod) the majority of the insects were inactive under fallen leaves, showing immature reproductive organs and less developed shoulders, indicating that, at this time, these bugs were in diapause. (author)

  19. Reactor Physics

    Ait Abderrahim, A.

    2002-01-01

    SCK-CEN's Reactor Physics and MYRRHA Department offers expertise in various areas of reactor physics, in particular in neutron and gamma calculations, reactor dosimetry, reactor operation and control, reactor code benchmarking and reactor safety calculations. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 materials testing reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2001 are summarised

  20. Reactor Physics

    Ait Abderrahim, A

    2001-04-01

    The Reactor Physics and MYRRHA Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis of reactor fuel. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2000 are summarised.

  1. Reactor Physics

    Ait Abderrahim, A

    2002-04-01

    SCK-CEN's Reactor Physics and MYRRHA Department offers expertise in various areas of reactor physics, in particular in neutron and gamma calculations, reactor dosimetry, reactor operation and control, reactor code benchmarking and reactor safety calculations. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 materials testing reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2001 are summarised.

  2. Reactor Physics

    Ait Abderrahim, A.

    2001-01-01

    The Reactor Physics and MYRRHA Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis of reactor fuel. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2000 are summarised

  3. Reactor operation

    Shaw, J

    2013-01-01

    Reactor Operation covers the theoretical aspects and design information of nuclear reactors. This book is composed of nine chapters that also consider their control, calibration, and experimentation.The opening chapters present the general problems of reactor operation and the principles of reactor control and operation. The succeeding chapters deal with the instrumentation, start-up, pre-commissioning, and physical experiments of nuclear reactors. The remaining chapters are devoted to the control rod calibrations and temperature coefficient measurements in the reactor. These chapters also exp

  4. Reactor safeguards

    Russell, Charles R

    1962-01-01

    Reactor Safeguards provides information for all who are interested in the subject of reactor safeguards. Much of the material is descriptive although some sections are written for the engineer or physicist directly concerned with hazards analysis or site selection problems. The book opens with an introductory chapter on radiation hazards, the construction of nuclear reactors, safety issues, and the operation of nuclear reactors. This is followed by separate chapters that discuss radioactive materials, reactor kinetics, control and safety systems, containment, safety features for water reactor

  5. Nuclear reactors

    Middleton, J.E.

    1977-01-01

    Reference is made to water cooled reactors and in particular to the cooling system of steam generating heavy water reactors (SGHWR). A two-coolant circuit is described for the latter. Full constructural details are given. (U.K.)

  6. Reactor decommissioning

    Lawton, H.

    1984-01-01

    A pioneering project on the decommissioning of the Windscale Advanced Gas-cooled Reactor, by the UKAEA, is described. Reactor data; policy; waste management; remote handling equipment; development; and recording and timescales, are all briefly discussed. (U.K.)

  7. RA Reactor

    1978-02-01

    In addition to basic characteristics of the RA reactor, organizational scheme and financial incentives, this document covers describes the state of the reactor components after 18 years of operation, problems concerned with obtaining the licence for operation with 80% fuel, problems of spent fuel storage in the storage pool of the reactor building and the need for renewal of reactor equipment, first of all instrumentation [sr

  8. Multiregion reactors

    Moura Neto, C. de; Nair, R.P.K.

    1979-08-01

    The study of reflected reactors can be done employing the multigroup diffusion method. The neutron conservation equations, inside the intervals, can be written by fluxes and group constants. A reflected reactor (one and two groups) for a slab geometry is studied, aplying the continuity of flux and current in the interface. At the end, the appropriated solutions for a infinite cylindrical reactor and for a spherical reactor are presented. (Author) [pt

  9. Social influence of a religious hero: the late Cardinal Stephen Kim Sou-hwan's effect on cornea donation and volunteerism.

    Bae, Hyuhn-Suhck; Brown, William J; Kang, Seok

    2011-01-01

    This study examined the mediated influence of a celebrated religious hero in South Korea, Cardinal Stephen Kim, through two forms of involvement--parasocial interaction and identification--on intention toward cornea donation and volunteerism, and it investigated how the news media diffused of his death. A structural equation modeling analysis with a Web-based voluntary survey of more than 1,200 people in South Korea revealed a multistep social influence process, beginning with parasocial interaction with Cardinal Kim, leading to identification with him, which predicted intention toward cornea donation and volunteerism. Additional investigations found that news of Cardinal Kim's death diffused rapidly through media and interpersonal communication. Results of this study demonstrate that religious leaders who achieve a celebrity hero status can prompt public discussion of important issues rather quickly through extensive media coverage, enabling them to promote prosocial behavior and positively affect public health.

  10. Nuclear reactor

    Hattori, Sadao; Sato, Morihiko.

    1994-01-01

    Liquid metals such as liquid metal sodium are filled in a reactor container as primary coolants. A plurality of reactor core containers are disposed in a row in the circumferential direction along with the inner circumferential wall of the reactor container. One or a plurality of intermediate coolers are disposed at the inside of an annular row of the reactor core containers. A reactor core constituted with fuel rods and control rods (module reactor core) is contained at the inside of each of the reactor core containers. Each of the intermediate coolers comprises a cylindrical intermediate cooling vessels. The intermediate cooling vessel comprises an intermediate heat exchanger for heat exchange of primary coolants and secondary coolants and recycling pumps for compulsorily recycling primary coolants at the inside thereof. Since a plurality of reactor core containers are thus assembled, a great reactor power can be attained. Further, the module reactor core contained in one reactor core vessel may be small sized, to facilitate the control for the reactor core operation. (I.N.)

  11. Losers Don’t Play Videogames. . . Heroes Do: The Remediation of Videogames in 1980s Science Fiction Films

    Dawn Stobbart

    2015-07-01

    Full Text Available A decade before the first adaptation of a videogame to film (Super Mario Brothers, 1993, computer and arcade videogames were incorporated as subject matter in mainstream Hollywood films such as War Games (1983, The Terminator (1984, and The Last Starfighter (1984, presenting the new medium through a science fictional lens. While these films aired widespread anxieties about the ability of computers and videogames to start global wars and override human social structures and agency, at the same time, they offered a counterpoint to the traditional masculine hero, which this article will explore, situating the adolescent within the historical context of the 1980s, film, and videogames. The article will also consider the rhetorical questions raised by these films: the protagonist of War Games both inadvertently sets off and stops a chain of events that would lead to World War III. He does more than save the world from his own error, however: he teaches the government’s military computer to think and humanises the machine, rendering it less dangerous. When the protagonist of The Last Starfighter beats the arcade game for which the film is named, he is visited by aliens, who inform him that they planted the game in hope of finding a hero with shooting skills that can save the galaxy from its enemies. They transport him to fight that war, and he emerges a victorious hero. All of these films reinvent the adolescent as a hero, and at the same time, question the role of technology as a growing part of 1980s culture.

  12. Nuclear power reactors

    1982-11-01

    After an introduction and general explanation of nuclear power the following reactor types are described: magnox thermal reactor; advanced gas-cooled reactor (AGR); pressurised water reactor (PWR); fast reactors (sodium cooled); boiling water reactor (BWR); CANDU thermal reactor; steam generating heavy water reactor (SGHWR); high temperature reactor (HTR); Leningrad (RMBK) type water-cooled graphite moderated reactor. (U.K.)

  13. Research reactors

    Merchie, Francois

    2015-10-01

    This article proposes an overview of research reactors, i.e. nuclear reactors of less than 100 MW. Generally, these reactors are used as neutron generators for basic research in matter sciences and for technological research as a support to power reactors. The author proposes an overview of the general design of research reactors in terms of core size, of number of fissions, of neutron flow, of neutron space distribution. He outlines that this design is a compromise between a compact enough core, a sufficient experiment volume, and high enough power densities without affecting neutron performance or its experimental use. The author evokes the safety framework (same regulations as for power reactors, more constraining measures after Fukushima, international bodies). He presents the main characteristics and operation of the two families which represent almost all research reactors; firstly, heavy water reactors (photos, drawings and figures illustrate different examples); and secondly light water moderated and cooled reactors with a distinction between open core pool reactors like Melusine and Triton, pool reactors with containment, experimental fast breeder reactors (Rapsodie, the Russian BOR 60, the Chinese CEFR). The author describes the main uses of research reactors: basic research, applied and technological research, safety tests, production of radio-isotopes for medicine and industry, analysis of elements present under the form of traces at very low concentrations, non destructive testing, doping of silicon mono-crystalline ingots. The author then discusses the relationship between research reactors and non proliferation, and finally evokes perspectives (decrease of the number of research reactors in the world, the Jules Horowitz project)

  14. Reactor physics and reactor computations

    Ronen, Y.; Elias, E.

    1994-01-01

    Mathematical methods and computer calculations for nuclear and thermonuclear reactor kinetics, reactor physics, neutron transport theory, core lattice parameters, waste treatment by transmutation, breeding, nuclear and thermonuclear fuels are the main interests of the conference

  15. Let’s sing our heroes: A comparison of biographical series for children in Kenya and South Africa

    C.K. Muriungi

    2004-07-01

    Full Text Available In this article two series of biographies written for children, and dealing with prominent personalities in Kenya and South Africa, are compared. In the line of argumentation developed the aim is to examine the main features in these biographies, and to indicate the importance of biographies in the general field of children’s literature. By examining a sample text from each series the specific ways in which the authors mould these personalities into heroes of their countries are scrutinised. Furthermore the way in which gender is represented in the two series is also examined and it is argued that both men and women form part of any country’s gallery of heroes. Underlying the main argument of the article is the contention that biographies are important in perpetuating the stories of the two countries’ heroes: also in teaching the history of each country to the young. A general motif of hard work resonates in these works, and therefore it is asserted that individuals’ biographies can be used as anecdotes to communicate with and to inspire and encourage young readers. The authors of the biographies actually intervene by presenting children with role models. Furthermore these role models are not abstract fictional characters but real human beings who made great sacrifices for their countries – people with whom children are thus able to identify.

  16. Research reactors

    Kowarski, L.

    1955-01-01

    It brings together the techniques data which are involved in the discussion about the utility for a research institute to acquire an atomic reactor for research purposes. This type of decision are often taken by non-specialist people who can need a brief presentation of a research reactor and its possibilities in term of research before asking advises to experts. In a first part, it draws up a list of the different research programs which can be studied by getting a research reactor. First of all is the reactor behaviour and kinetics studies (reproducibility factor, exploration of neutron density, effect of reactor structure, effect of material irradiation...). Physical studies includes study of the behaviour of the control system, studies of neutron resonance phenomena and study of the fission process for example. Chemical studies involves the study of manipulation and control of hot material, characterisation of nuclear species produced in the reactor and chemical effects of irradiation on chemical properties and reactions. Biology and medicine research involves studies of irradiation on man and animals, genetics research, food or medical tools sterilization and neutron beams effect on tumour for example. A large number of other subjects can be studied in a reactor research as reactor construction material research, fabrication of radioactive sources for radiographic techniques or applied research as in agriculture or electronic. The second part discussed the technological considerations when choosing the reactor type. The technological factors, which are considered for its choice, are the power of the reactor, the nature of the fuel which is used, the type of moderator (water, heavy water, graphite or BeO) and the reflector, the type of coolants, the protection shield and the control systems. In the third part, it described the characteristics (place of installation, type of combustible and comments) and performance (power, neutron flux ) of already existing

  17. Healing Gods, Heroes and Rituals in the Graeco-Roman World

    Panayotis Pachis

    2016-05-01

    Full Text Available This editorial introduces the articles published within the OLH Special Collection, ‘Healing Gods, Heroes and Rituals in the Graeco-Roman World’. The first two articles in this collection interrogate the figures of specific healing gods. Olympia Panagiotidou’s article ‘Asclepius’ Myths and Healing Narratives: Counter-Intuitive Concepts and Cultural Expectations’ focuses on the curative features that defined the image of Asclepius, the most famous of the healing gods. The next article in the collection, ‘The Fate of a Healing Goddess: Ocular Pathologies, the Antonine Plague, and the Ancient Roman Cult of Bona Dea’ by Leonardo Ambasciano, interrogates the religious figure of another healing agent: the Italian goddess Bona Dea who was particularly venerated in Rome and in the region of Latium and whose cult reveals the way in which ancient Roman androcentric control over women was institutionalised through religious figures.  The third article in the collection, Audrey Ferlut’s ‘Goddesses as Consorts of the Healing Gods in 'Gallia Belgica' and the 'Germaniae': Forms of Cult and Ritual Practices’ considers the impact that cults dedicated to gods and goddesses had on populations in the wider area of the Roman Empire, focusing on the Northern provinces of the Western Roman Empire ('Gallia Belgica' and the 'Germaniae'. The collection’s final article, ‘From Textual Reception to Textual Codification: Thessalos and the Quest for Authenticity’ by Spyros Piperakis, moves the discussion from the question of cult practices to ‘alternative’ healing therapies in antiquity. Piperakis deals with astrological medicine, one of many alternative therapeutic methods that became popular during the Hellenistic and Roman period.  Taken together, the articles in ‘Healing Gods, Heroes and Rituals in the Graeco-Roman World’ demonstrate that we need to approach the study of ancient myths and cults within their socio-cultural context

  18. Radiotherapy staffing in the European countries: final results from the ESTRO-HERO survey.

    Lievens, Yolande; Defourny, Noémie; Coffey, Mary; Borras, Josep M; Dunscombe, Peter; Slotman, Ben; Malicki, Julian; Bogusz, Marta; Gasparotto, Chiara; Grau, Cai; Kokobobo, Arianit; Sedlmayer, Felix; Slobina, Elena; Coucke, Philippe; Gabrovski, Roumen; Vosmik, Milan; Eriksen, Jesper Grau; Jaal, Jana; Dejean, Catherine; Polgar, Csaba; Johannsson, Jakob; Cunningham, Moya; Atkocius, Vydmantas; Back, Carlo; Pirotta, Martin; Karadjinovic, Vanja; Levernes, Sverre; Maciejewski, Boguslaw; Trigo, Maria Lurdes; Šegedin, Barbara; Palacios, Amalia; Pastoors, Bert; Beardmore, Charlotte; Erridge, Sara; Smyth, Gaile; Cleries Soler, Ramon

    2014-08-01

    The ESTRO Health Economics in Radiation Oncology (HERO) project has the overall aim to develop a knowledge base of the provision of radiotherapy in Europe and build a model for health economic evaluation of radiation treatments at the European level. The first milestone was to assess the availability of radiotherapy resources within Europe. This paper presents the personnel data collected in the ESTRO HERO database. An 84-item questionnaire was sent out to European countries, through their national scientific and professional radiotherapy societies. The current report includes a detailed analysis of radiotherapy staffing (questionnaire items 47-60), analysed in relation to the annual number of treatment courses and the socio-economic status of the countries. The analysis was conducted between February and July 2014, and is based on validated responses from 24 of the 40 European countries defined by the European Cancer Observatory (ECO). A large variation between countries was found for most parameters studied. Averages and ranges for personnel numbers per million inhabitants are 12.8 (2.5-30.9) for radiation oncologists, 7.6 (0-19.7) for medical physicists, 3.5 (0-12.6) for dosimetrists, 26.6 (1.9-78) for RTTs and 14.8 (0.4-61.0) for radiotherapy nurses. The combined average for physicists and dosimetrists is 9.8 per million inhabitants and 36.9 for RTT and nurses. Radiation oncologists on average treat 208.9 courses per year (range: 99.9-348.8), physicists and dosimetrists conjointly treat 303.3 courses (range: 85-757.7) and RTT and nurses 76.8 (range: 25.7-156.8). In countries with higher GNI per capita, all personnel categories treat fewer courses per annum than in less affluent countries. This relationship is most evident for RTTs and nurses. Different clusters of countries can be distinguished on the basis of available personnel resources and socio-economic status. The average personnel figures in Europe are now consistent with, or even more favourable than

  19. Reactor container

    Naruse, Yoshihiro.

    1990-01-01

    The thickness of steel shell plates in a reactor container embedded in sand cussions is monitored to recognize the corrosion of the steel shell plates. That is, the reactor pressure vessel is contained in a reactor container shell and the sand cussions are disposed on the lower outside of the reactor container shell to elastically support the shell. A pit is disposed at a position opposing to the sand cussions for measuring the thickness of the reactor container shell plates. The pit is usually closed by a closing member. In the reactor container thus constituted, the closing member can be removed upon periodical inspection to measure the thickness of the shell plates. Accordingly, the corrosion of the steel shell plates can be recognized by the change of the plate thickness. (I.S.)

  20. Hybrid reactors

    Moir, R.W.

    1980-01-01

    The rationale for hybrid fusion-fission reactors is the production of fissile fuel for fission reactors. A new class of reactor, the fission-suppressed hybrid promises unusually good safety features as well as the ability to support 25 light-water reactors of the same nuclear power rating, or even more high-conversion-ratio reactors such as the heavy-water type. One 4000-MW nuclear hybrid can produce 7200 kg of 233 U per year. To obtain good economics, injector efficiency times plasma gain (eta/sub i/Q) should be greater than 2, the wall load should be greater than 1 MW.m -2 , and the hybrid should cost less than 6 times the cost of a light-water reactor. Introduction rates for the fission-suppressed hybrid are usually rapid

  1. Nuclear reactor

    Garabedian, G.

    1988-01-01

    A liquid reactor is described comprising: (a) a reactor vessel having a core; (b) one or more satellite tanks; (c) pump means in the satellite tank; (d) heat exchanger means in the satellite tank; (e) an upper liquid metal conduit extending between the reactor vessel and the satellite tank; (f) a lower liquid metal duct extending between the reactor vessel and satellite tanks the upper liquid metal conduit and the lower liquid metal duct being arranged to permit free circulation of liquid metal between the reactor vessel core and the satellite tank by convective flow of liquid metal; (g) a separate sealed common containment vessel around the reactor vessel, conduits and satellite tanks; (h) the satellite tank having space for a volume of liquid metal that is sufficient to dampen temperature transients resulting from abnormal operating conditions

  2. New Spirit and New Hero: How Hungarian Startups Redefine the Ideas of Local Capitalism

    Szabó Natasa

    2016-12-01

    Full Text Available The present paper investigates how the Bridge Budapest, a CSR organization founded by leading Hungarian IT startups, attempts to shape the values of Hungarian society towards capitalism in general, and towards entrepreneurship in particular. In my paper I argue that the central aim of the organization is to facilitate Hungary’s catching up with the core capitalist countries through the transformation of the attitudes and the ideologies surrounding capitalism in the Hungarian context, i.e. the local spirit of capitalism. This consists, on the one hand, of restoring the legitimation of some of the core institutions of capitalism, such as the enterprise and the entrepreneur, and of confronting the risk-taking, innovative and ethical figure of the entrepreneur hero with the provincial figure of the ‘postcommunist cheater’. On the other hand, it also consists of propagating a new management of work that aims to produce self-controlling and self-motivating employees. In the narrative of Bridge Budapest IT companies appear as the perfect moral and economic subjects – the bearers of the new spirit of capitalism – that have the expertise to offer solutions to the problems of Hungarian society, and around which the local capitalism should be built.

  3. War as social regeneration: Sombart from The Quintessence of Capitalism to Merchants and Heroes

    Fabio Degli Esposti

    2015-03-01

    Full Text Available The essay examines a particular stage of the life and scientific production of Werner Sombart: the years of the First World War. Most biographers of Sombart showed that the German scholar, during these years, remained essentially on the fringe of the debate that took place in Germany, as well in other countries taking part in the war, on the economic and social transformations induced by the conflict, and in particular, on the new role assumed by the State in directing the life of the economy and society. Published in 1915, Händler und Helden (Merchants and Heroes should be primarily considered as a work of propaganda. It is a vicious attack on Britain, seen as the country that had produced a petty and materialistic conception of existence. The topics chosen by Sombart for his polemic, however, summarize many aspects of his previous works on the origins and development of modern economics, and even anticipate some of his reflections – later developed in the second edition of Modern Capitalism or in works such as German socialism – on the future and the fate of capitalism.

  4. The family roles of siblings of people diagnosed with a mental disorder: heroes and lost children.

    Sanders, Avihay; Szymanski, Kate; Fiori, Kate

    2014-08-01

    In order to cope with the diagnosis of mental illness in a family member, siblings may be forced to adjust their roles in the family. Taking into account the crucial role that some siblings play in caregiving for the mentally ill especially when the parents are no longer available, it is imperative to develop awareness of their unique needs and address them. Thirty-three adult siblings of people diagnosed with a mental disorder completed the Role Behaviour Inventory (RBI) and a general questionnaire including open-ended questions regarding the roles they played in their families of origin. Findings from the inventory and general questionnaire suggest that the well siblings score higher on two roles, the Hero and Lost Child, and lower on the Mascot and Scapegoat roles relative to a comparison group (N = 33). Being a sibling caregiver emerged as a risk factor to assume certain dysfunctional roles in the family. Implications for future research and therapy are discussed. © 2013 International Union of Psychological Science.

  5. Heroes, Mates and Family: How Tragedy Teaches Us About Being Australian

    Sarah Gillman

    2010-03-01

    Full Text Available In his 2006 Australia Day address to the National Press Club in Canberra, the then prime minister, John Howard, told journalists that ‘people come to this country because they want to be Australians’. However, as Howard himself admitted, ‘The irony is that no institution or code lays down a test of Australianness’. So how can we know what it is to be Australian? One way is to look at the public statements the Howard made in the wake of tragedy and disaster during his decade as prime minister. These statements reinforce the key values of the Howard government: the role of family, the place of heroes and the importance of mateship. This article analyses the public reaction of the Howard during media coverage of events such as the Port Arthur shootings, the Bali bombings, the 2004 tsunami and the Beaconsfield mine rescue. It argues that Howard’s public responses to these tragedies reflect a move on hi part to recapture the cultural debate and define what it is to be an ‘Australian’.

  6. Heroes, mates and family : how tragedy teaches us about being Australian

    Gillman, Sarah

    2010-01-01

    Full Text Available In his 2006 Australia Day address to the National Press Club in Canberra, the then prime minister, John Howard, told journalists that ‘people come to this country because they want to be Australians’. However, as Howard himself admitted, ‘The irony is that no institution or code lays down a test of Australianness’. So how can we know what it is to be Australian? One way is to look at the public statements the Howard made in the wake of tragedy and disaster during his decade as prime minister. These statements reinforce the key values of the Howard government: the role of family, the place of heroes and the importance of mateship. This article analyses the public reaction of the Howard during media coverage of events such as the Port Arthur shootings, the Bali bombings, the 2004 tsunami and the Beaconsfield mine rescue. It argues that Howard’s public responses to these tragedies reflect a move on hi part to recapture the cultural debate and define what it is to be an ‘Australian’.

  7. Heroes, Mates and Family: How Tragedy Teaches Us About Being Australian

    Sarah Gillman

    2010-02-01

    Full Text Available In his 2006 Australia Day address to the National Press Club in Canberra, the then prime minister, John Howard, told journalists that ‘people come to this country because they want to be Australians’. However, as Howard himself admitted, ‘The irony is that no institution or code lays down a test of Australianness’. So how can we know what it is to be Australian? One way is to look at the public statements the Howard made in the wake of tragedy and disaster during his decade as prime minister. These statements reinforce the key values of the Howard government: the role of family, the place of heroes and the importance of mateship. This article analyses the public reaction of the Howard during media coverage of events such as the Port Arthur shootings, the Bali bombings, the 2004 tsunami and the Beaconsfield mine rescue. It argues that Howard’s public responses to these tragedies reflect a move on hi part to recapture the cultural debate and define what it is to be an ‘Australian’.

  8. Canons and Heroes: The Reception of the Complete Works Translation Project in Finland, 2002-13

    Keinänen Nely

    2017-12-01

    Full Text Available This essay examines the reception of the ten-year Complete Works translation project undertaken by the Finnish publishing company Werner Söderström Oy (WSOY in 2004-13. Focusing on reviews published in the first and last years of the project, the essay details ongoing processes of Shakespeare (re-canonization in Finland, as each new generation explains to itself what Shakespeare means to them, and why it continues to read, translate and perform Shakespeare. These processes are visible in comments from the series editors and translators extolling the importance of Shakespeare’s work and the necessity of creating new, modern translations so Finns can read Shakespeare in their mother tongue; in discussions of the literary qualities of a good Shakespeare translation, e.g. whether it is advisable to use iambic pentameter in Finnish, a trochaic language; and in the creation of publisher and translator “heroes,” who at significant cost to themselves, whether in money in terms of the publisher, or time and effort in terms of the translators, labour to provide the public with their Shakespeare in modern Finnish. While on the whole reviewers celebrated the new translations, there was some resistance to changes in familiar lines from older translations, such as Macbeth’s “tomorrow” speech, suggesting that there are nevertheless some limits on modernizing “classic” translations.

  9. The Tragedy of Work: Working Class Heroes in the Italian 21st-century Literature

    Claudio Panella

    2017-11-01

    Full Text Available The paper aims at exploring how the literary representation of the worker has changed between the end of 20th-century and the beginning of the 21st-century. With the fall of the 20th-century ideologies and raising the fragmentation of labour, texts have emerged in Italian literature which illustrated the tragic social and existential condition of the working class. Among these texts we can find some récits de filiation written by sons and daughters of workers whose health and ideals have been undermined even down to death. These typology of texts let emerged two equally tragic characters: fathers, ill and defeated but still working class heroes and sons, tragically conscious of their roles witnesses-superstites of those ‘denied heroes’. Among the texts being tackled in the paper Il nemico (2009 by Emanuele Tonon, Amianto (2012 by Alberto Prunetti, Il fuoco a mare (2015 by Andrea Bottalico, Ilva Football Club (2016 by Fulvio Colucci and Lorenzo d’Alò

  10. Experimental reslts from the HERO project: In situ measurements of ionospheric modifications using sounding rockets

    Rose, G.; Grandal, B.; Neske, E.; Ott, W.; Spenner, K.; Maseide, K.; Troim, J.

    1985-01-01

    The Heating Rocket project HERO comprised the first in situ experiments to measure artifical ionospheric modifications at F layer heights set up by radio waves transmitted from the Heating facility at Ramfjord near Tromso in Northern Norway. Four instrumented payloads were launched on sounding rockets from Andoya Rocket Range during the autumn of 1982 into a sunlit ionosphere with the sun close to the horizon. The payloads recorded modifications, in particular, the presence of electron plasma waves near the reflection level of the heating wave. The amplitude and phase of the three components of the electric and magnetic fields of the heating wave were measured simultaneously as a function of altitude. Coherent spectra of the three electric field components of the locally generated electron plasma waves were obtained in a 50-kHz-wide band. At the same time quasi-continuous measurements were made on several fixed frequencies from 4 kHz to 16 kHz below the heating frequency and in the VLF-range using linear dipole antennas. Moreover, measurements were made of electron temperature, suprathermal electrons and local electron density along the rocket trajectory. The experimental results will be presented and discussed

  11. A Hero in the Friendly Arctic: Deconstructing Vilhjalmur Stefansson's Rhetorical Maneuver

    Silje Gaupseth

    2012-05-01

    Full Text Available The article deals with Arctic explorer and anthropologist Vilhjalmur Stefansson's self-presentation in the expedition account The Friendly Arctic: The Story of Five Years in Polar Regions (1921, which tells the story of his travels and trials in the Canadian High Arctic in the years between 1913-1918. The account has been considered a key text to Stefansson's Arctic career, and provides a textbook example of his characteristic theory of living off the country in the so-called Eskimo way. Against the background of Stefansson's debated position as Arctic expert and visionary, I ask if it is possible to read the kind of criticism with which Stefansson frequently was met as rooted in some of the narrative aspects of his account. The narrative persona or implied author is a central element in the literature of exploration, as several literary scholars have pointed out. My reading is centred around the implied author of The Friendly Arctic, which I argue must be read in light of the sometimes conflicting roles given to Stefansson as protagonist and narrator in his own story. Close-readings of passages from the account raise the dilemma of how it is possible to present oneself as a hero in an essentially friendly Arctic.

  12. A letter from the United States: the romance of medicine--voyages and heroes.

    Richard V, Lee

    2009-03-01

    Becoming a physician is a lifelong journey, not merely the completion of medical school and postgraduate training. For those pedagogues that wish to train doctors as technicians the notion that there is something heroic and romantic in a physician's life is quaint, old fashioned, and out of date! In today's teaching hospitals virtual patients come via digital technology in computed x-ray and magnetic resonance images, automated laboratory test panels, electrophysiologic studies, and algorhythmic histories. Doctors have no need to leave their computer and increasingly doctors do not leave their computers for the bedside, the home, the neighborhood, or the country of their "patients". Contemporary doctors are in danger of losing their bedside clinical skills and with them go the role of physician as a wise, widely traveled human being knowledgeable about the rigors of inhospitable environs, the hardiness of the species, the despair of poverty, and the seductive dangers of wealth. There is similarity of this kind of physician to mythic heroes, and they still have stories to tell.

  13. Nuclear reactor

    Batheja, P.; Huber, R.; Rau, P.

    1985-01-01

    Particularly for nuclear reactors of small output, the reactor pressure vessel contains at least two heat exchangers, which have coolant flowing through them in a circuit through the reactor core. The circuit of at least one heat exchanger is controlled by a slide valve, so that even for low drive forces, particularly in natural circulation, the required even loading of the heat exchanger is possible. (orig./HP) [de

  14. Heterogeneous reactors

    Moura Neto, C. de; Nair, R.P.K.

    1979-08-01

    The microscopic study of a cell is meant for the determination of the infinite multiplication factor of the cell, which is given by the four factor formula: K(infinite) = n(epsilon)pf. The analysis of an homogeneous reactor is similar to that of an heterogeneous reactor, but each factor of the four factor formula can not be calculated by the formulas developed in the case of an homogeneous reactor. A great number of methods was developed for the calculation of heterogeneous reactors and some of them are discussed. (Author) [pt

  15. Slurry reactors

    Kuerten, H; Zehner, P [BASF A.G., Ludwigshafen am Rhein (Germany, F.R.)

    1979-08-01

    Slurry reactors are designed on the basis of empirical data and model investigations. It is as yet not possible to calculate the flow behavior of such reactors. The swarm of gas bubbles and cluster formations of solid particles and their interaction in industrial reactors are not known. These effects control to a large extent the gas hold-up, the gas-liquid interface and, similarly as in bubble columns, the back-mixing of liquids and solids. These hydrodynamic problems are illustrated in slurry reactors which constructionally may be bubble columns, stirred tanks or jet loop reactors. The expected effects are predicted by means of tests with model systems modified to represent the conditions in industrial hydrogenation reactors. In his book 'Mass Transfer in Heterogeneous Catalysis' (1970) Satterfield complained of the lack of knowledge about the design of slurry reactors and hence of the impossible task of the engineer who has to design a plant according to accepted rules. There have been no fundamental changes since then. This paper presents the problems facing the engineer in designing slurry reactors, and shows new development trends.

  16. Reactor safety

    Butz, H.P.; Heuser, F.W.; May, H.

    1985-01-01

    The paper comprises an introduction into nuclear physics bases, the safety concept generally speaking, safety devices of pwr type reactors, accident analysis, external influences, probabilistic safety assessment and risk studies. It further describes operational experience, licensing procedures under the Atomic Energy Law, research in reactor safety and the nuclear fuel cycle. (DG) [de

  17. Nuclear reactor

    Mysels, K.J.; Shenoy, A.S.

    1976-01-01

    A nuclear reactor is described in which the core consists of a number of fuel regions through each of which regulated coolant flows. The coolant from neighbouring fuel regions is combined in a manner which results in an averaging of the coolant temperature at the outlet of the core. By this method the presence of hot streaks in the reactor is reduced. (UK)

  18. Reactor container

    Kato, Masami; Nishio, Masahide.

    1987-01-01

    Purpose: To prevent the rupture of the dry well even when the melted reactor core drops into a reactor pedestal cavity. Constitution: In a reactor container in which a dry well disposed above the reactor pedestal cavity for containing the reactor pressure vessel and a torus type suppression chamber for containing pressure suppression water are connected with each other, the pedestal cavity and the suppression chamber are disposed such that the flow level of the pedestal cavity is lower than the level of the pressure suppression water. Further, a pressure suppression water introduction pipeway for introducing the pressure suppression water into the reactor pedestal cavity is disposed by way of an ON-OFF valve. In case if the melted reactor core should fall into the pedestal cavity, the ON-OFF valve for the pressure suppression water introduction pipeway is opened to introduce the pressure suppression water in the suppression chamber into the pedestal cavity to cool the melted reactor core. (Ikeda, J.)

  19. RA Reactor

    1989-01-01

    This chapter includes the following: General description of the RA reactor, organization of work, responsibilities of leadership and operators team, regulations concerning operation and behaviour in the reactor building, regulations for performing experiments, regulations and instructions for inserting samples into experimental channels [sr

  20. Reactor physics

    Ait Abderrahim, H.

    1998-01-01

    Progress in research on reactor physics in 1997 at the Belgian Nuclear Research Centre SCK/CEN is described. Activities in the following four domains are discussed: core physics, ex-core neutron transport, experiments in Materials Testing Reactors, international benchmarks

  1. Sensory response of the egg parasitoid Telenomus podisi to stimuli from the bug Euschistus heros Resposta sensorial do parasitóide de ovos Telenomus podisi a estímulos provenientes do percevejo Euschistus heros

    Cleonor Cavalcante Silva

    2006-07-01

    Full Text Available The objective of this work was to study the foraging behavior of Telenomus podisi Ashmead (Hymenoptera: Scelionidae in the presence of stimuli from its host, Euschistus heros (Heteroptera: Pentatomidae. The stimuli selected were: egg mass; virgin males and females; volatile extracts of sexually mature males and females; components of male sex pheromone; a component of the alarm pheromone, hexane and an empty cage as control. In a closed arena, the parasitoids were given the choice between single and combined stimuli presented to them simultaneously. To find the host egg, T. podisi primarily uses the sensory cues released from the male insects. The orientation toward odors of male chemical extract indicates that a source of kairomone was detected. Gas chromatographic analyses of this substance showed peak of methyl 2,6,10-trimethyltridecanoate, the main component of male sexual pheromone. The sensory response to methyl 2,6,10-trimethyltridecanoate confirms that this compound may act as a kairomone to find host eggs. Females and egg mass stimuli were weakly attractive to the parasitoid.O objetivo deste trabalho foi estudar o comportamento de busca de Telenomus podisi Ashmead (Hymenoptera: Scelionidae, em presença de estímulos provenientes do hospedeiro Euschitus heros (Heteroptera: Pentatomidae. As fontes de estímulos utilizadas foram: massas de ovos, machos e fêmeas virgens, extratos químicos de machos e fêmeas sexualmente maduros, componentes sintéticos do feromônio sexual do macho de E. heros, um composto sintético do feromônio de alarme, hexano e uma gaiola vazia como controle. Os testes foram conduzidos em arenas, onde foi dada a oportunidade para os parasitóides escolherem entre estímulos isolados e estímulos combinados. Para encontrar o hospedeiro, T. podisi utiliza principalmente estímulos olfativos emitidos pelos machos. As respostas sensoriais aos odores liberados pelos extratos químicos do macho indicam que uma fonte de

  2. Reactor core

    Azekura, Kazuo; Kurihara, Kunitoshi.

    1992-01-01

    In a BWR type reactor, a great number of pipes (spectral shift pipes) are disposed in the reactor core. Moderators having a small moderating cross section (heavy water) are circulated in the spectral shift pipes to suppress the excess reactivity while increasing the conversion ratio at an initial stage of the operation cycle. After the intermediate stage of the operation cycle in which the reactor core reactivity is lowered, reactivity is increased by circulating moderators having a great moderating cross section (light water) to extend the taken up burnup degree. Further, neutron absorbers such as boron are mixed to the moderator in the spectral shift pipe to control the concentration thereof. With such a constitution, control rods and driving mechanisms are no more necessary, to simplify the structure of the reactor core. This can increase the fuel conversion ratio and control great excess reactivity. Accordingly, a nuclear reactor core of high conversion and high burnup degree can be attained. (I.N.)

  3. Reactor container

    Fukazawa, Masanori.

    1991-01-01

    A system for controlling combustible gases, it has been constituted at present such that the combustible gases are controlled by exhausting them to the wet well of a reactor container. In this system, however, there has been a problem, in a reactor container having plenums in addition to the wet well and the dry well, that the combustible gases in such plenums can not be controlled. In view of the above, in the present invention, suction ports or exhaust ports of the combustible gas control system are disposed to the wet well, the dry well and the plenums to control the combustible gases in the reactor container. Since this can control the combustible gases in the entire reactor container, the integrity of the reactor container can be ensured. (T.M.)

  4. Reactor container

    Kojima, Yoshihiro; Hosomi, Kenji; Otonari, Jun-ichiro.

    1997-01-01

    In the present invention, a catalyst for oxidizing hydrogen to be disposed in a reactor container upon rupture of pipelines of a reactor primary coolant system is prevented from deposition of water droplets formed from a reactor container spray to suppress elevation of hydrogen concentration in the reactor container. Namely, a catalytic combustion gas concentration control system comprises a catalyst for oxidizing hydrogen and a support thereof. In addition, there is also disposed a water droplet deposition-preventing means for preventing deposition of water droplets in a reactor pressure vessel on the catalyst. Then, the effect of the catalyst upon catalytic oxidation reaction of hydrogen can be kept high. The local elevation of hydrogen concentration can be prevented even upon occurrence of such a phenomenon that various kinds of mobile forces in the container such as dry well cooling system are lost. (I.S.)

  5. Nuclear reactor

    Tilliette, Z.

    1975-01-01

    A description is given of a nuclear reactor and especially a high-temperature reactor in which provision is made within a pressure vessel for a main cavity containing the reactor core and a series of vertical cylindrical pods arranged in spaced relation around the main cavity and each adapted to communicate with the cavity through two collector ducts or headers for the primary fluid which flows downwards through the reactor core. Each pod contains two superposed steam-generator and circulator sets disposed in substantially symmetrical relation on each side of the hot primary-fluid header which conveys the primary fluid from the reactor cavity to the pod, the circulators of both sets being mounted respectively at the bottom and top ends of the pod

  6. Toxicity of Piper aduncum (Piperaceae) Essential Oil Against Euschistus heros (F.) (Hemiptera: Pentatomidae) and Non-Effect on Egg Parasitoids.

    Turchen, L M; Piton, L P; Dall'Oglio, E L; Butnariu, A R; Pereira, M J B

    2016-10-01

    Plant essential oils have been recognized as significant natural resources for insecticides. Herein, we have assessed the toxicity of the essential oil of Piper aduncum (Piperaceae) against Euschistus heros (F.) (Hemiptera: Pentatomidae), a key soybean pest in Neotropical America. In addition, we have assessed its effect on the performance of egg parasitoids. The essential oil was obtained from the leaves of P. aduncum via hydrodistillation. Subsequently, bioassays of the concentration response to eggs (contact and immersion methods), nymphs, and adults (topical application) were conducted, to assess the lethal effects on the stink bug. We also evaluated the performance of parasitism and adult emergence of egg parasitoids, when the host eggs were treated with essential oil. In the egg bioassay, both exposure methods were efficient for unviable eggs (immersion LC 50  = 15.64 mg mL -1 ; contact LC 50  = 21.29 mg mL -1 ), with the highlight on the immersion method. The bioassay with nymphs indicated a higher toxicity of essential oil, with lower concentrations (LC 50  = 11.37 mg mL -1 ) being required to cause the death of insects. For adults, a reduction in survival of insects was observed, and consequently, there was a reduction in the number of individuals in the next generation. Although the essential oil was toxic to E. heros, it exhibited lower toxicity for egg parasitoids, as there was no effect on parasitism and the emergence of wasps. We discuss likely explanations for such selectivity. In summary, we found that the essential oil was promising for the control of E. heros, because it caused deleterious effects at all development stages of the stink bug and had no effect on parasitism and emergence of the egg parasitoids, which suggested compatibility with biological control.

  7. Radiotherapy equipment and departments in the European countries: final results from the ESTRO-HERO survey.

    Grau, Cai; Defourny, Noémie; Malicki, Julian; Dunscombe, Peter; Borras, Josep M; Coffey, Mary; Slotman, Ben; Bogusz, Marta; Gasparotto, Chiara; Lievens, Yolande; Kokobobo, Arianit; Sedlmayer, Felix; Slobina, Elena; Feyen, Karen; Hadjieva, Tatiana; Odrazka, Karel; Grau Eriksen, Jesper; Jaal, Jana; Bly, Ritva; Chauvet, Bruno; Willich, Normann; Polgar, Csaba; Johannsson, Jakob; Cunningham, Moya; Magrini, Stefano; Atkocius, Vydmantas; Untereiner, Michel; Pirotta, Martin; Karadjinovic, Vanja; Levernes, Sverre; Sladowski, Krystol; Lurdes Trigo, Maria; Šegedin, Barbara; Rodriguez, Aurora; Lagerlund, Magnus; Pastoors, Bert; Hoskin, Peter; Vaarkamp, Jaap; Cleries Soler, Ramon

    2014-08-01

    Documenting the distribution of radiotherapy departments and the availability of radiotherapy equipment in the European countries is an important part of HERO - the ESTRO Health Economics in Radiation Oncology project. HERO has the overall aim to develop a knowledge base of the provision of radiotherapy in Europe and build a model for health economic evaluation of radiation treatments at the European level. The aim of the current report is to describe the distribution of radiotherapy equipment in European countries. An 84-item questionnaire was sent out to European countries, principally through their national societies. The current report includes a detailed analysis of radiotherapy departments and equipment (questionnaire items 26-29), analyzed in relation to the annual number of treatment courses and the socio-economic status of the countries. The analysis is based on validated responses from 28 of the 40 European countries defined by the European Cancer Observatory (ECO). A large variation between countries was found for most parameters studied. There were 2192 linear accelerators, 96 dedicated stereotactic machines, and 77 cobalt machines reported in the 27 countries where this information was available. A total of 12 countries had at least one cobalt machine in use. There was a median of 0.5 simulator per MV unit (range 0.3-1.5) and 1.4 (range 0.4-4.4) simulators per department. Of the 874 simulators, a total of 654 (75%) were capable of 3D imaging (CT-scanner or CBCT-option). The number of MV machines (cobalt, linear accelerators, and dedicated stereotactic machines) per million inhabitants ranged from 1.4 to 9.5 (median 5.3) and the average number of MV machines per department from 0.9 to 8.2 (median 2.6). The average number of treatment courses per year per MV machine varied from 262 to 1061 (median 419). While 69% of MV units were capable of IMRT only 49% were equipped for image guidance (IGRT). There was a clear relation between socio-economic status, as

  8. Radiotherapy staffing in the European countries: Final results from the ESTRO-HERO survey

    Lievens, Yolande; Defourny, Noémie; Coffey, Mary; Borras, Josep M.; Dunscombe, Peter; Slotman, Ben; Malicki, Julian; Bogusz, Marta; Gasparotto, Chiara; Grau, Cai; Kokobobo, Arianit; Sedlmayer, Felix; Slobina, Elena; Coucke, Philippe; Gabrovski, Roumen; Vosmik, Milan; Eriksen, Jesper Grau; Jaal, Jana; Dejean, Catherine; Polgar, Csaba

    2014-01-01

    Background: The ESTRO Health Economics in Radiation Oncology (HERO) project has the overall aim to develop a knowledge base of the provision of radiotherapy in Europe and build a model for health economic evaluation of radiation treatments at the European level. The first milestone was to assess the availability of radiotherapy resources within Europe. This paper presents the personnel data collected in the ESTRO HERO database. Materials and methods: An 84-item questionnaire was sent out to European countries, through their national scientific and professional radiotherapy societies. The current report includes a detailed analysis of radiotherapy staffing (questionnaire items 47–60), analysed in relation to the annual number of treatment courses and the socio-economic status of the countries. The analysis was conducted between February and July 2014, and is based on validated responses from 24 of the 40 European countries defined by the European Cancer Observatory (ECO). Results: A large variation between countries was found for most parameters studied. Averages and ranges for personnel numbers per million inhabitants are 12.8 (2.5–30.9) for radiation oncologists, 7.6 (0–19.7) for medical physicists, 3.5 (0–12.6) for dosimetrists, 26.6 (1.9–78) for RTTs and 14.8 (0.4–61.0) for radiotherapy nurses. The combined average for physicists and dosimetrists is 9.8 per million inhabitants and 36.9 for RTT and nurses. Radiation oncologists on average treat 208.9 courses per year (range: 99.9–348.8), physicists and dosimetrists conjointly treat 303.3 courses (range: 85–757.7) and RTT and nurses 76.8 (range: 25.7–156.8). In countries with higher GNI per capita, all personnel categories treat fewer courses per annum than in less affluent countries. This relationship is most evident for RTTs and nurses. Different clusters of countries can be distinguished on the basis of available personnel resources and socio-economic status. Conclusions: The average personnel

  9. Radiotherapy equipment and departments in the European countries: Final results from the ESTRO-HERO survey

    Grau, Cai; Defourny, Noémie; Malicki, Julian; Dunscombe, Peter; Borras, Josep M.; Coffey, Mary; Slotman, Ben; Bogusz, Marta; Gasparotto, Chiara; Lievens, Yolande; Kokobobo, Arianit; Sedlmayer, Felix; Slobina, Elena; Feyen, Karen; Hadjieva, Tatiana; Odrazka, Karel; Eriksen, Jesper Grau; Jaal, Jana; Bly, Ritva; Chauvet, Bruno

    2014-01-01

    Background: Documenting the distribution of radiotherapy departments and the availability of radiotherapy equipment in the European countries is an important part of HERO – the ESTRO Health Economics in Radiation Oncology project. HERO has the overall aim to develop a knowledge base of the provision of radiotherapy in Europe and build a model for health economic evaluation of radiation treatments at the European level. The aim of the current report is to describe the distribution of radiotherapy equipment in European countries. Methods: An 84-item questionnaire was sent out to European countries, principally through their national societies. The current report includes a detailed analysis of radiotherapy departments and equipment (questionnaire items 26–29), analyzed in relation to the annual number of treatment courses and the socio-economic status of the countries. The analysis is based on validated responses from 28 of the 40 European countries defined by the European Cancer Observatory (ECO). Results: A large variation between countries was found for most parameters studied. There were 2192 linear accelerators, 96 dedicated stereotactic machines, and 77 cobalt machines reported in the 27 countries where this information was available. A total of 12 countries had at least one cobalt machine in use. There was a median of 0.5 simulator per MV unit (range 0.3–1.5) and 1.4 (range 0.4–4.4) simulators per department. Of the 874 simulators, a total of 654 (75%) were capable of 3D imaging (CT-scanner or CBCT-option). The number of MV machines (cobalt, linear accelerators, and dedicated stereotactic machines) per million inhabitants ranged from 1.4 to 9.5 (median 5.3) and the average number of MV machines per department from 0.9 to 8.2 (median 2.6). The average number of treatment courses per year per MV machine varied from 262 to 1061 (median 419). While 69% of MV units were capable of IMRT only 49% were equipped for image guidance (IGRT). There was a clear

  10. The Making of an Environmental Hero: A History of Ecomodern Masculinity, Fuel Cells and Arnold Schwarzenegger

    Martin Hultman

    2013-05-01

    Full Text Available In 2007, Arnold Schwarzenegger received the European Campaigner of the Year award. Chosen by the readers of European Voice for his work on solving global environmental problems, he was hailed as a visionary environmental hero, at the pinnacle of his popularity as a politician. In Sweden the public was told to follow his lead and politicians were advised to learn from his example. How could this happen? How could Schwarzenegger be portrayed as an environmental role model, even in countries such as Sweden, a country known around the world for progressive policies in gender equality and the environment? This paper introduces and investigates the notion of ‘ecomodern masculinity,’ through the assemblage of Schwarzenegger’s gender identity, environmental politics, and image in Sweden. While there has been research on gender inequity in relation to environmental and developmental goals, there has been little concern with constructions of how shifting hegemonic masculinity is embedded in environmental policy. As former California governor, actor, and Mr. Universe, Schwarzenegger’s connection to the ecomodern politics that he prescribed is researched within a framework combining insights from the fields of gender and environmental studies. Ecomodern environmental politics and Kindergarten Commando masculinity are understood as attempts to incorporate and deflect criticism in order to perpetuate hegemony, to ensure that practices remain in effect, ‘business as usual.’ By looking at the historical changes in Schwarzenegger’s identity intertwined with the rise of ecomodern discourse, this article illustrates those changes and broadens our understanding of global politics in the fields of energy and the environment.

  11. ACCURACY ASSESSMENT OF GO PRO HERO 3 (BLACK CAMERA IN UNDERWATER ENVIRONMENT

    P. Helmholz,

    2016-06-01

    Full Text Available Modern digital cameras are increasing in quality whilst decreasing in size. In the last decade, a number of waterproof consumer digital cameras (action cameras have become available, which often cost less than $500. A possible application of such action cameras is in the field of Underwater Photogrammetry. Especially with respect to the fact that with the change of the medium to below water can in turn counteract the distortions present. The goal of this paper is to investigate the suitability of such action cameras for underwater photogrammetric applications focusing on the stability of the camera and the accuracy of the derived coordinates for possible photogrammetric applications. For this paper a series of image sequences was capture in a water tank. A calibration frame was placed in the water tank allowing the calibration of the camera and the validation of the measurements using check points. The accuracy assessment covered three test sets operating three GoPro sports cameras of the same model (Hero 3 black. The test set included the handling of the camera in a controlled manner where the camera was only dunked into the water tank using 7MP and 12MP resolution and a rough handling where the camera was shaken as well as being removed from the waterproof case using 12MP resolution. The tests showed that the camera stability was given with a maximum standard deviation of the camera constant σc of 0.0031mm for 7MB (for an average c of 2.720mm and 0.0072 mm for 12MB (for an average c of 3.642mm. The residual test of the check points gave for the 7MB test series the largest rms value with only 0.450mm and the largest maximal residual of only 2.5 mm. For the 12MB test series the maximum rms value is 0. 653mm.

  12. Accuracy Assessment of GO Pro Hero 3 (black) Camera in Underwater Environment

    Helmholz, , P.; Long, J.; Munsie, T.; Belton, D.

    2016-06-01

    Modern digital cameras are increasing in quality whilst decreasing in size. In the last decade, a number of waterproof consumer digital cameras (action cameras) have become available, which often cost less than 500. A possible application of such action cameras is in the field of Underwater Photogrammetry. Especially with respect to the fact that with the change of the medium to below water can in turn counteract the distortions present. The goal of this paper is to investigate the suitability of such action cameras for underwater photogrammetric applications focusing on the stability of the camera and the accuracy of the derived coordinates for possible photogrammetric applications. For this paper a series of image sequences was capture in a water tank. A calibration frame was placed in the water tank allowing the calibration of the camera and the validation of the measurements using check points. The accuracy assessment covered three test sets operating three GoPro sports cameras of the same model (Hero 3 black). The test set included the handling of the camera in a controlled manner where the camera was only dunked into the water tank using 7MP and 12MP resolution and a rough handling where the camera was shaken as well as being removed from the waterproof case using 12MP resolution. The tests showed that the camera stability was given with a maximum standard deviation of the camera constant σc of 0.0031mm for 7MB (for an average c of 2.720mm) and 0.0072 mm for 12MB (for an average c of 3.642mm). The residual test of the check points gave for the 7MB test series the largest rms value with only 0.450mm and the largest maximal residual of only 2.5 mm. For the 12MB test series the maximum rms value is 0. 653mm.

  13. Following Hegel’s Sovereign Beast: An Excursus on the Right of Heroes

    Joshua Ben David Nichols

    2013-01-01

    Full Text Available In The Beast and the Sovereign, Derrida addresses an association that is as paradoxical as it is common. On the one hand, it seems as if the sovereign is, or at least should be, the furthest from the beast. And yet, as soon as we consult the various archives of political mythology––myth, theology, philosophy, art, etc.––we find them together, inseparable despite their distance. The seminar itself is a continuation of his previous explorations of the host concepts and figures that populate the political and philosophical history of sovereignty. The course takes him through a series of texts that stretches from Plato, Machiavelli, Hobbes and Rousseau, to Freud, Heidegger, Lacan and Schmitt, among others, but his engagement with Hegel is limited. The few times that Hegel’s name does appear, it is almost exclusively a reference or aside within other more substantial engagements (Lacan and Heidegger, in particular. This absence is at least somewhat curious given the extent of Derrida’s previous engagements with Hegel’s corpus. I am not suggesting that this absence constitutes some essential oversight; rather, it is an opportunity to set out on an excursion from the course of The Beast and the Sovereign without leaving its territory. After all, Hegel also has an account of the origins of law. He, too, has a character that is set apart by his (almost animal quality. This figure arrives on stage before history begins. His role––and indeed his “right”––is to found the most basic elements of the state. We are told that his “right” is absolute. He is no Lord. He is not driven by a desire for the recognition of the other. However, who confers this “absolute” right? If his actions are not bound by any measure or proportion, how do we distinguish between the hero and the criminal?

  14. From hero to Newcomen: the critical scientific and technological developments that led to the invention of the steam engine.

    Kitsikopoulos, Harry

    2013-09-01

    This essay provides an analytical account of the history of various steam devices by tracing the key technological and scientific developments culminating in the Savery and Newcomen models. It begins in antiquity with the writings of Hero of Alexandria, which were rediscovered and translated in Italy fourteen centuries later, followed by the construction of simple steam devices. The most decisive development comes in the middle of the seventeenth century with the overturning, through the experimental work of Torricelli, Pascal, and Guericke, of the Aristotelian dogma that no vacuum exists. The final stretch of this discovery process amounted to an Anglo-French race, with English inventors being more successful in the end.

  15. SuperQueeroes – Our LGBTI* Comic Book Heroes and Heroines Schwules Museum*, January 22-June 26, 2016

    Carlos Kong

    2016-11-01

    Full Text Available SuperQueeroes – Our LGBTI* Comic Book Heroes and Heroines at the Schwules Museum* in Berlin presents the first exhibition of queer comics in Europe. The exhibition provides a comprehensive survey of comics with LGBTI characters and narratives, primarily from Europe and America. As a foundational endeavor, SuperQueeroes raises important questions regarding the curation of both comics and the history of sexuality, whose critical examination remains relevant for the future work on queer comics that the exhibition will likely inspire.

  16. Reactor building

    Maruyama, Toru; Murata, Ritsuko.

    1996-01-01

    In the present invention, a spent fuel storage pool of a BWR type reactor is formed at an upper portion and enlarged in the size to effectively utilize the space of the building. Namely, a reactor chamber enhouses reactor facilities including a reactor pressure vessel and a reactor container, and further, a spent fuel storage pool is formed thereabove. A second spent fuel storage pool is formed above the auxiliary reactor chamber at the periphery of the reactor chamber. The spent fuel storage pool and the second spent fuel storage pool are disposed in adjacent with each other. A wall between both of them is formed vertically movable. With such a constitution, the storage amount for spent fuels is increased thereby enabling to store the entire spent fuels generated during operation period of the plant. Further, since requirement of the storage for the spent fuels is increased stepwisely during periodical exchange operation, it can be used for other usage during the period when the enlarged portion is not used. (I.S.)

  17. Reactor container

    Shibata, Satoru; Kawashima, Hiroaki

    1984-01-01

    Purpose: To optimize the temperature distribution of the reactor container so as to moderate the thermal stress distribution on the reactor wall of LMFBR type reactor. Constitution: A good heat conductor (made of Al or Cu) is appended on the outer side of the reactor container wall from below the liquid level to the lower face of a deck plate. Further, heat insulators are disposed to the outside of the good heat conductor. Furthermore, a gas-cooling duct is circumferentially disposed at the contact portion between the good heat conductor and the deck plate around the reactor container. This enables to flow the cold heat from the liquid metal rapidly through the good heat conductor to the cooling duct and allows to maintain the temperature distribution on the reactor wall substantially linear even with the abrupt temperature change in the liquid metal. Further, by appending the good heat conductor covered with inactive metals not only on the outer side but also on the inside of the reactor wall to introduce the heat near the liquid level to the upper portion and escape the same to the cooling layer below the roof slab, the effect can be improved further. (Ikeda, J.)

  18. Nuclear reactor

    Rau, P.

    1980-01-01

    The reactor core of nuclear reactors usually is composed of individual elongated fuel elements that may be vertically arranged and through which coolant flows in axial direction, preferably from bottom to top. With their lower end the fuel elements gear in an opening of a lower support grid forming part of the core structure. According to the invention a locking is provided there, part of which is a control element that is movable along the fuel element axis. The corresponding locking element is engaged behind a lateral projection in the opening of the support grid. The invention is particularly suitable for breeder or converter reactors. (orig.) [de

  19. Nuclear reactors

    Prescott, R.F.

    1976-01-01

    A nuclear reactor containment vessel faced internally with a metal liner is provided with thermal insulation for the liner, comprising one or more layers of compressible material such as ceramic fiber, such as would be conventional in an advanced gas-cooled reactor and also a superposed layer of ceramic bricks or tiles in combination with retention means therefor, the retention means (comprising studs projecting from the liner, and bolts or nuts in threaded engagement with the studs) being themselves insulated from the vessel interior so that the coolant temperatures achieved in a High-Temperature Reactor or a Fast Reactor can be tolerated with the vessel. The layer(s) of compressible material is held under a degree of compression either by the ceramic bricks or tiles themselves or by cover plates held on the studs, in which case the bricks or tiles are preferably bedded on a yielding layer (for example of carbon fibers) rather than directly on the cover plates

  20. Nuclear reactor

    Miyashita, Akio.

    1981-01-01

    Purpose: To facilitate and accelerate a leakage test of valves of a main steam pipe by adding a leakage test partition valve thereto. Constitution: A leakage testing partition valve is provided between a pressure vessel for a nuclear reactor and the most upstream side valve of a plurality of valves to be tested for leakage, a testing branch pipe is communicated with the downstream side of the partition valve, and the testing water for preventing leakage is introduced thereto through the branch pipe. Since main steam pipe can be simply isolated by closing the partition valve in the leakage test, the leakage test can be conducted without raising or lowering the water level in the pressure vessel, and since interference with other work in the reactor can be eliminated, the leakage test can be readily conducted parallel with other work in the reactor in a short time. Clean water can be used without using reactor water as the test water. (Yoshihara, H.)

  1. Reactor container

    Abe, Yoshihito; Sano, Tamotsu; Ueda, Sabuo; Tanaka, Kazuhisa.

    1987-01-01

    Purpose: To improve the liquid surface disturbance in LMFBR type reactors. Constitution: A horizontal flow suppressing mechanism mainly comprising vertical members is suspended near the free liquid surface of coolants in the upper plenum. The horizontal flow of coolants near the free liquid surface is reduced by the suppressing mechanism to effectively reduce the surface disturbance. The reduction in the liquid surface disturbance further prevails to the entire surface region with no particular vertical variations to the free liquid surface to remarkably improve the preventive performance for the liquid surface disturbance. Accordingly, it is also possible to attain the advantageous effects such as prevention for the thermal fatigue in reactor vessel walls, reactor upper mechanisms, etc. and prevention of burning damage to the reactor core due to the reduction of envolved Ar gas. (Kamimura, M.)

  2. REACTOR SHIELD

    Wigner, E.P.; Ohlinger, L.E.; Young, G.J.; Weinberg, A.M.

    1959-02-17

    Radiation shield construction is described for a nuclear reactor. The shield is comprised of a plurality of steel plates arranged in parallel spaced relationship within a peripheral shell. Reactor coolant inlet tubes extend at right angles through the plates and baffles are arranged between the plates at right angles thereto and extend between the tubes to create a series of zigzag channels between the plates for the circulation of coolant fluid through the shield. The shield may be divided into two main sections; an inner section adjacent the reactor container and an outer section spaced therefrom. Coolant through the first section may be circulated at a faster rate than coolant circulated through the outer section since the area closest to the reactor container is at a higher temperature and is more radioactive. The two sections may have separate cooling systems to prevent the coolant in the outer section from mixing with the more contaminated coolant in the inner section.

  3. NUCLEAR REACTOR

    Miller, H.I.; Smith, R.C.

    1958-01-21

    This patent relates to nuclear reactors of the type which use a liquid fuel, such as a solution of uranyl sulfate in ordinary water which acts as the moderator. The reactor is comprised of a spherical vessel having a diameter of about 12 inches substantially surrounded by a reflector of beryllium oxide. Conventionnl control rods and safety rods are operated in slots in the reflector outside the vessel to control the operation of the reactor. An additional means for increasing the safety factor of the reactor by raising the ratio of delayed neutrons to prompt neutrons, is provided and consists of a soluble sulfate salt of beryllium dissolved in the liquid fuel in the proper proportion to obtain the result desired.

  4. Breeder reactors

    Gollion, H.

    1977-01-01

    The reasons for the development of fast reactors are briefly reviewed (a propitious neutron balance oriented towards a maximum uranium burnup) and its special requirements (cooling, fissile material density and reprocessing) discussed. The three stages in the French program of fast reactor development are outlined with Rapsodie at Cadarache, Phenix at Marcoule, and Super Phenix at Creys-Malville. The more specific features of the program of research and development are emphasized: kinetics and the core, the fuel and the components [fr

  5. Nuclear reactor

    Schulze, I.; Gutscher, E.

    1980-01-01

    The core contains a critical mass of UN or U 2 N 3 in the form of a noncritical solution with melted Sn being kept below a N atmosphere. The lining of the reactor core consists of graphite. If fission progresses part of the melted metal solution is removed and cleaned from fission products. The reactor temperatures lie in the range of 300 to 2000 0 C. (Examples and tables). (RW) [de

  6. Reactor technology

    Erdoes, P.

    1977-01-01

    This is one of a series of articles discussing aspects of nuclear engineering ranging from a survey of various reactor types for static and mobile use to mention of atomic thermo-electric batteries of atomic thermo-electric batteries for cardiac pacemakers. Various statistics are presented on power generation in Europe and U.S.A. and economics are discussed in some detail. Molten salt reactors and research machines are also described. (G.M.E.)

  7. Reactor containment

    Kawabe, Ryuhei; Yamaki, Rika.

    1990-01-01

    A water vessel is disposed and the gas phase portion of the water vessel is connected to a reactor container by a pipeline having a valve disposed at the midway thereof. A pipe in communication with external air is extended upwardly from the liquid phase portion to a considerable height so as to resist against the back pressure by a waterhead in the pipeline. Accordingly, when the pressure in the container is reduced to a negative level, air passes through the pipeline and uprises through the liquid phase portion in the water vessel in the form of bubbles and then flows into the reactor container. When the pressure inside of the reactor goes higher, since the liquid surface in the water vessel is forced down, water is pushed up into the pipeline. Since the waterhead pressure of a column of water in the pipeline and the pressure of the reactor container are well-balanced, gases in the reactor container are not leaked to the outside. Further, in a case if a great positive pressure is formed in the reactor container, the inner pressure overcomes the waterhead of the column of water, so that the gases containing radioactive aerosol uprise in the pipeline. Since water and the gases flow being in contact with each other, this can provide the effect of removing aerosol. (T.M.)

  8. Fast reactors

    Vasile, A.

    2001-01-01

    Fast reactors have capacities to spare uranium natural resources by their breeding property and to propose solutions to the management of radioactive wastes by limiting the inventory of heavy nuclei. This article highlights the role that fast reactors could play for reducing the radiotoxicity of wastes. The conversion of 238 U into 239 Pu by neutron capture is more efficient in fast reactors than in light water reactors. In fast reactors multi-recycling of U + Pu leads to fissioning up to 95% of the initial fuel ( 238 U + 235 U). 2 strategies have been studied to burn actinides: - the multi-recycling of heavy nuclei is made inside the fuel element (homogeneous option); - the unique recycling is made in special irradiation targets placed inside the core or at its surroundings (heterogeneous option). Simulations have shown that, for the same amount of energy produced (400 TWhe), the mass of transuranium elements (Pu + Np + Am + Cm) sent to waste disposal is 60,9 Kg in the homogeneous option and 204.4 Kg in the heterogeneous option. Experimental programs are carried out in Phenix and BOR60 reactors in order to study the feasibility of such strategies. (A.C.)

  9. 'National Hero and Very Queer Fish': Empire, Sexuality and the British Remembrance of General Gordon, 1918-72.

    Jones, Max

    2015-01-01

    This article presents the first detailed study of General Gordon's remembrance in Britain between 1918 and 1972. Previous scholars have exaggerated the impact of Lytton Strachey's Eminent Victorians (1918). Strachey damaged Gordon's reputation, but part one reveals how several commentators forcefully rebutted Eminent Victorians; official commemorations, books, radio plays, and films celebrated Gordon in the 1930s, as empire featured prominently in mass culture. Didactic uses of his example by the state diminished after 1945, but parts 2 and 3 show how writers used Gordon's story to engage with new debates about Britain's role in the world, immigration and sexuality. The article reveals how a fascination with the sexuality of heroes inspired men as diverse as Viscount Robin Maugham and East End gangster Ronnie Kray to identify with Gordon. Maugham's works and the feature film Khartoum (1966) expressed nostalgia for empire during decolonization, but American screenwriter Robert Ardrey also drew on his experiences in the Congo to present a dark vision of African savagery in Khartoum, a vision performed at Pinewood studios by black immigrants from London's slums. The article questions Edward Berenson's emphasis on the 'charismatic aura' of heroes, emphasizing instead the diversity of engagements inspired through different genre.

  10. Generation IV reactors: reactor concepts

    Cardonnier, J.L.; Dumaz, P.; Antoni, O.; Arnoux, P.; Bergeron, A.; Renault, C.; Rimpault, G.; Delpech, M.; Garnier, J.C.; Anzieu, P.; Francois, G.; Lecomte, M.

    2003-01-01

    Liquid metal reactor concept looks promising because of its hard neutron spectrum. Sodium reactors benefit a large feedback experience in Japan and in France. Lead reactors have serious assets concerning safety but they require a great effort in technological research to overcome the corrosion issue and they lack a leader country to develop this innovative technology. In molten salt reactor concept, salt is both the nuclear fuel and the coolant fluid. The high exit temperature of the primary salt (700 Celsius degrees) allows a high energy efficiency (44%). Furthermore molten salts have interesting specificities concerning the transmutation of actinides: they are almost insensitive to irradiation damage, some salts can dissolve large quantities of actinides and they are compatible with most reprocessing processes based on pyro-chemistry. Supercritical water reactor concept is based on operating temperature and pressure conditions that infers water to be beyond its critical point. In this range water gets some useful characteristics: - boiling crisis is no more possible because liquid and vapour phase can not coexist, - a high heat transfer coefficient due to the low thermal conductivity of supercritical water, and - a high global energy efficiency due to the high temperature of water. Gas-cooled fast reactors combining hard neutron spectrum and closed fuel cycle open the way to a high valorization of natural uranium while minimizing ultimate radioactive wastes and proliferation risks. Very high temperature gas-cooled reactor concept is developed in the prospect of producing hydrogen from no-fossil fuels in large scale. This use implies a reactor producing helium over 1000 Celsius degrees. (A.C.)

  11. Research reactors - an overview

    West, C.D.

    1997-01-01

    A broad overview of different types of research and type reactors is provided in this paper. Reactor designs and operating conditions are briefly described for four reactors. The reactor types described include swimming pool reactors, the High Flux Isotope Reactor, the Mark I TRIGA reactor, and the Advanced Neutron Source reactor. Emphasis in the descriptions is placed on safety-related features of the reactors. 7 refs., 7 figs., 2 tabs

  12. Guitar Hero: novas práticas de consumo e cultura auditiva na música através dos videogames

    NOGUEIRA, Bruno Pedrosa

    2009-12-01

    Full Text Available This paper introduces the context of musical videogames, based on the experience presented in the Guitar Hero series. From its relations with mass popular music and music industry is created a reflection based on two research hypothesis: how those games will influence the way we consume and listen to music today?

  13. A Study of the Significant Factors That Affect the Job Placement Rates of Students Who Have Completed a HERO Program. Year 2 Report.

    Instructional Development and Evaluation Associates, Inc., Berkeley, MI.

    A three-year study examined the significant factors that affect the job placement rates of students completing a Home Economics Related Occupations (HERO) program. Other purposes of the study were to develop and pilot test a model that could be used to determine factors related to student placement in a variety of vocational education programs and…

  14. A Study of the Significant Factors That Affect the Job Placement Rates of Students Who Have Completed a HERO Program. Year Summary Report.

    Instructional Development and Evaluation Associates, Inc., Berkeley, MI.

    A three-year study examined the significant factors that affect the job placement rates of students completing a Home Economics Related Occupations (HERO) program. Other purposes of the study were to develop and pilot test a model that could be used to determine factors related to student placement in a variety of vocational education programs and…

  15. Using a Hero as a Model in Video Instruction to Improve the Daily Living Skills of an Elementary-Aged Student with Autism Spectrum Disorder: A Pilot Study

    Ohtake, Yoshihisa

    2015-01-01

    The present pilot study investigated the impact of video hero modelling (VHM) on the daily living skills of an elementary-aged student with autism spectrum disorder. The VHM, in which a character much admired by the student exhibited a correct response, was shown to the participant immediately before the situation where he needed to exhibit the…

  16. In Search for H.E.R.O among Filipino Teachers: The Relationship of Positive Psychological Capital and Work-Related Outcomes

    Ganotice, Fraide A., Jr.; Yeung, Susanna S.; Beguina, Leonora A.; Villarosa, Jonalyn B.

    2016-01-01

    Recent positive psychology literature has consistently demonstrated the link between PsyCap (composite score of hope, efficacy, resilience, and optimism--HERO) and employee productivity. However, most of these studies were conducted in industrial or organizational settings and have mostly examined the independent effect of hope, efficacy,…

  17. Renaissance Epyllions: A Comparative Reading of Christopher Marlowe's "Hero and Leander," Thomas Lodge's "Scylla's Metamorphosis" and Francis Beaumont's "Salmacis and Hermaphroditus"

    Mahmoudi, Yazdan

    2016-01-01

    The present paper is supposed to compare and contrast three of these masterpieces written the Renaissance period. The epyllions under study are Christopher Marlowe's "Hero and Leander," Thomas Lodge's "Scylla's Metamorphosis" and Francis Beaumont's "Salmacis and Hermaphroditus." Bush believes that "the influence…

  18. Reactor Physics Development for Advanced Gas-Cooled Reactors; Recherches en Physique des Reacteurs, pour des Reacteurs Perfectionnes Refroidis par un Gaz; Razrabotka metodov v oblasti reaktornoj fiziki dlya usovershenstvovannogo reaktora s gazovym okhlazhdeniem; Progresos de la Fisica de los Reactores de Tipo Avanzado Refrigerados por Gas

    Moore, J. [United Kingdom Atomic Energy Authority (United Kingdom)

    1964-04-15

    The paper is a general one reviewing the detailed experimental and theoretical work that has been done during design, development and commissioning of the Windscale AGR. and in general support of development of Advanced Gas-Cooled Reactors for civil power production. The main purpose of the paper is to describe die considerable amount of work that has been necessary to develop adequate theoretical methods for calculating (a) flux distribution and reactivity balance in a complex reactor core, (b) power distribution in complex fuel geometries, and (c) the effect of irradiation on fuel cycles and power distribution. As an introduction reference is made to experimental information and theoretical methods available from work on uranium Magnox systems and the experimental information obtained from the British Industries Collaborative Experimental Programme (BICEP) both of which provided the starting point for development of theoretical methods applicable to AGRs. The approach to critical facility APEX and the zero energy reactor HERO have been used with regular lattice arrangements and with combinations of perturbers such as control rods in them to determine lattice parameters for AGR and to check the theoretical methods developed for dealing with heterogeneous reactor cores. The theoretical methods that have been developed and used to date are known as hetrecontrol and FTD2. Experiments were designed to check detailed features of these methods and measurements on a number of different sized ''reactor'' cores in APEX and HERO were analysed to determine a self-consistent set of lattice constants that fitted the experimental results. These purely empirical constants were the used in hetrecontrol and FTD2 to successfully plan commissioning and choice of the loading pattern for the Windscale AGR. Reference is made to experimental techniques that have been tested and those developed for the particular problems encountered. The methods examined for measurement of reactivity

  19. Nuclear reactors

    Prescott, R F; George, B V; Baglin, C J

    1978-05-10

    Reference is made to thermal insulation on the inner surfaces of containment vessels of fluid cooled nuclear reactors and particularly in situations where the thermal insulation must also serve a structural function and transmit substantial load forces to the surface which it covers. An arrangement is described that meets this requirement and also provides for core support means that favourably influences the flow of hot coolant from the lower end of the core into a plenum space in the hearth of the reactor. The arrangement comprises a course of thermally insulating bricks arranged as a mosaic covering a wall of the reactor and a course of thermally insulating tiles arranged as a mosaic covering the course of bricks. Full constructional details are given.

  20. Nuclear reactors

    Prescott, R.F.; George, B.V.; Baglin, C.J.

    1978-01-01

    Reference is made to thermal insulation on the inner surfaces of containment vessels of fluid cooled nuclear reactors and particularly in situations where the thermal insulation must also serve a structural function and transmit substantial load forces to the surface which it covers. An arrangement is described that meets this requirement and also provides for core support means that favourably influences the flow of hot coolant from the lower end of the core into a plenum space in the hearth of the reactor. The arrangement comprises a course of thermally insulating bricks arranged as a mosaic covering a wall of the reactor and a course of thermally insulating tiles arranged as a mosaic covering the course of bricks. Full constructional details are given. (UK)

  1. Bioconversion reactor

    McCarty, Perry L.; Bachmann, Andre

    1992-01-01

    A bioconversion reactor for the anaerobic fermentation of organic material. The bioconversion reactor comprises a shell enclosing a predetermined volume, an inlet port through which a liquid stream containing organic materials enters the shell, and an outlet port through which the stream exits the shell. A series of vertical and spaced-apart baffles are positioned within the shell to force the stream to flow under and over them as it passes from the inlet to the outlet port. The baffles present a barrier to the microorganisms within the shell causing them to rise and fall within the reactor but to move horizontally at a very slow rate. Treatment detention times of one day or less are possible.

  2. Nuclear reactor

    Scholz, M.

    1976-01-01

    An improvement of the accessibility of that part of a nuclear reactor serving for biological shield is proposed. It is intended to provide within the biological shield, distributed around the circumference of the reactor pressure vessel, several shielding chambers filled with shielding material, which are isolated gastight from the outside by means of glass panes with a given bursting strength. It is advantageous that, on the one hand, inspection and maintenance will be possible without great effort and, on the other, a large relief cross section will be at desposal if required. (UWI) [de

  3. NEUTRONIC REACTOR

    Wigner, E.P.; Weinberg, A.W.; Young, G.J.

    1958-04-15

    A nuclear reactor which uses uranium in the form of elongated tubes as fuel elements and liquid as a coolant is described. Elongated tubular uranium bodies are vertically disposed in an efficient neutron slowing agent, such as graphite, for example, to form a lattice structure which is disposed between upper and lower coolant tanks. Fluid coolant tubes extend through the uranium bodies and communicate with the upper and lower tanks and serve to convey the coolant through the uranium body. The reactor is also provided with means for circulating the cooling fluid through the coolant tanks and coolant tubes, suitable neutron and gnmma ray shields, and control means.

  4. Diapause and different seasonal morphs of Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) in Northern Parana State; Diapausa e diferentes formas sazonais em Euschistus heros (Fabr.) (Hemiptera: Pentatomidae) no Norte do Parana, Brazil

    Mourao, Ana P. M. [Universidade Estadual de Londrina, PR (Brazil). Dept. de Agronomia; Panizzi, Antonio R. [EMBRAPA, Londrina, PR (Brazil). Centro Nacional de Pesquisa de Soja

    2000-06-15

    The Neotropical brown stink bug, Euschistus heros (Fabr.), was collected on sunflower [Helianthus annuus (L.)], soybean [Glycine max (L.) Merrill], star bristle [Acanthospermum hispidum (DC.)], and under fallen leaves of mango tree [Mangifera indica (L.)] and privet (Ligustrum lucidum Ait.), during one year, to evaluate the diapause incidence and the occurrence of different seasonal morphs. The majority of the insects (ca. 90%) with mature reproductive organs was observed during the summer (December-March), when E. heros was found on soybean or on sunflower; in the beginning of autumn, most insects (87%) showed immature reproductive organs, and they were found on star bristle and under fallen leaves. Bugs with mature reproductive organs had more developed shoulders (3.23 and 3.27 mm, for males and females, respectively) than bugs with immature organs (2.91 and 2.89 mm, for males and females, respectively). Two distinct body colors, dark brown and reddish brown, were observed. Nevertheless, the reddish brown was the predominant color of both mature and immature adults during all year. Adults were parasitized by Hexacladia smithii (Ashmead) (Hymenoptera: Encyrtidae) and Tachinidae mainly Trichopoda giacomellii (Blanchard) (Diptera: Tachinidae) (80% and 40% of parasitism in male and female, respectively) during summer (December), when the bugs colonized sunflower. In soybean, 12% of males and 10% of females were parasitized, whereas in fallen leaves, the parasitism rate was 5% in both sexes.These results showed that in autumn/winter (shorter photoperiod) the majority of the insects were inactive under fallen leaves, showing immature reproductive organs and less developed shoulders, indicating that, at this time, these bugs were in diapause. (author)

  5. Neutronic reactor

    Wende, C.W.J.

    1976-01-01

    The method of operating a water-cooled neutronic reactor having a graphite moderator is described which comprises flowing a gaseous mixture of carbon dioxide and helium, in which the helium comprises 40--60 volume percent of the mixture, in contact with the graphite moderator. 2 claims, 4 figures

  6. Neutronic reactor

    Wende, C.W.J.

    1976-01-01

    A safety rod for a nuclear reactor has an inner end portion having a gamma absorption coefficient and neutron capture cross section approximately equal to those of the adjacent shield, a central portion containing materials of high neutron capture cross section and an outer end portion having a gamma absorption coefficient at least equal to that of the adjacent shield

  7. Reactor facility

    Suzuki, Hiroaki; Murase, Michio; Yokomizo, Osamu.

    1997-01-01

    The present invention provides a BWR type reactor facility capable of suppressing the amount of steams generated by the mutual effect of a failed reactor core and coolants upon occurrence of an imaginal accident, and not requiring spacial countermeasures for enhancing the pressure resistance of the container vessel. Namely, a means for supplying cooling water at a temperature not lower by 30degC than the saturated temperature corresponding to the inner pressure of the containing vessel upon occurrence of an accident is disposed to a lower dry well below the pressure vessel. As a result, upon occurrence of such an accident that the reactor core should be melted and flown downward of the pressure vessel, when cooling water at a temperature not lower than the saturated temperature, for example, cooling water at 100degC or higher is supplied to the lower dry well, abrupt generation of steams by the mutual effect of the failed reactor core and cooling water is scarcely caused compared with a case of supplying cooling water at a temperature lower than the saturation temperature by 30degC or more. Accordingly, the amount of steams to be generated can be suppressed, and special countermeasure is no more necessary for enhancing the pressure resistance of the container vessel is no more necessary. (I.S.)

  8. Nuclear reactor

    Gilroy, J.E.

    1980-01-01

    An improved cover structure for liquid metal cooled fast breeder type reactors is described which it is claimed reduces the temperature differential across the intermediate grid plate of the core cover structure and thereby reduces its subjection to thermal stresses. (UK)

  9. Reactor licensing

    Harvie, J.D.

    2002-01-01

    This presentation discusses reactor licensing and includes the legislative basis for licensing, other relevant legislation , the purpose of the Nuclear Safety and Control Act, important regulations, regulatory document, policies, and standards. It also discusses the role of the CNSC, its mandate and safety philosophy

  10. Nuclear reactor

    Hattori, Sadao; Sekine, Katsuhisa.

    1987-01-01

    Purpose: To decrease the thickness of a reactor container and reduce the height and the height and plate thickness of a roof slab without using mechanical vibration stoppers. Constitution: Earthquake proofness is improved by filling fluids such as liquid metal between a reactor container and a secondary container and connecting the outer surface of the reactor container with the inner surface of the secondary container by means of bellows. That is, for the horizontal seismic vibrations, horizontal loads can be supported by the secondary container without providing mechanical vibration stoppers to the reactor container and the wall thickness can be reduced thereby enabling to simplify thermal insulation structure for the reduction of thermal stresses. Further, for the vertical seismic vibrations, verical loads can be transmitted to the secondary container thereby enabling to reduce the wall thickness in the same manner as for the horizontal load. By the effect of transferring the point of action of the container load applied to the roof slab to the outer circumferential portion, the intended purpose can be attained and, in addition, the radiation dose rate at the upper surface of the roof slab can be decreased. (Kamimura, M.)

  11. Reactor system

    Miyano, Hiroshi; Narabayashi, Naoshi.

    1990-01-01

    The represent invention concerns a reactor system with improved water injection means to a pressure vessel of a BWR type reactor. A steam pump is connected to a heat removing system pipeline, a high pressure water injection system pipeline and a low pressure water injection system pipeline for injecting water into the pressure vessel. A pump actuation pipeline is disposed being branched from a main steam pump or a steam relieaf pipeline system, through which steams are supplied to actuate the steam pump and supply cooling water into the pressure vessel thereby cooling the reactor core. The steam pump converts the heat energy into the kinetic energy and elevates the pressure of water to a level higher than the pressure of the steams supplied by way of a pressure-elevating diffuser. Cooling water can be supplied to the pressure vessel by the pressure elevation. This can surely inject cooling water into the pressure vessel upon loss of coolant accident or in a case if reactor scram is necessary, without using an additional power source. (I.N.)

  12. Reactor core

    Matsuura, Tetsuaki; Nomura, Teiji; Tokunaga, Kensuke; Okuda, Shin-ichi

    1990-01-01

    Fuel assemblies in the portions where the gradient of fast neutron fluxes between two opposing faces of a channel box is great are kept loaded at the outermost peripheral position of the reactor core also in the second operation cycle in the order to prevent interference between a control rod and the channel box due to bending deformation of the channel box. Further, the fuel assemblies in the second row from the outer most periphery in the first operation cycle are also kept loaded at the second row in the second operation cycle. Since the gradient of the fast neutrons in the reactor core is especially great at the outer circumference of the reactor core, the channel box at the outer circumference is bent such that the surface facing to the center of the reactor core is convexed and the channel box in the second row is also bent to the identical direction, the insertion of the control rod is not interfered. Further, if the positions for the fuels at the outermost periphery and the fuels in the second row are not altered in the second operation cycle, the gaps are not reduced to prevent the interference between the control rod and the channel box. (N.H.)

  13. New about research reactors

    Egorenkov, P.M.

    2001-01-01

    The multi-purpose research reactor MAPLE (Canada) and concept of new reactor MAPLE-CNF as will substitute the known Canadian research reactor NRU are described. New reactor will be used as contributor for investigations into materials, neutron beams and further developments for the CANDU type reactor. The Budapest research reactor (BRR) and its application after the last reconstruction are considered also [ru

  14. Heroes of Civilization. The Amazon Region as Agricultural Export Cosmopolis in the Work of General Rafael Reyes

    Felipe Martínez Pinzón

    2013-07-01

    the isthmus led the Colombian elites to rethink other border spaces. The article analyzes the discourse of appropriation of the Amazon territory set forth by President, General, and entrepreneur Rafael Reyes (1849-1921 in speeches lectures, travel diaries, and autobiographical memoirs. On the basis of those materials, the article argues that instead of nationalizing the Amazonian territory, Reyes suggesting incorporating it into the dynamics of global capitalism through the contradictory proposal of an “agricultural export cosmopolis” aimed at exploiting the region’s wealth. The contradictions of a segregationist cosmopolis, as a narrative of globalization in the early 20th century, also led General Reyes to represent the entrepreneurs of the agricultural frontier as “heroes of civilization”, a phrase that betrays the anachronism and irrationalism inherent in the allegedly indestructible rational discourse of civilization in the tropics.

  15. HOBYS and W43-HERO: Two more steps toward a Galaxy-wide understanding of high-mass star formation

    Motte, Frédérique; Bontemps, Sylvain; Tigé, Jérémy

    The Herschel/HOBYS key program allows to statistically study the formation of 10-20 M ⊙ stars. The IRAM/W43-HERO large program is itself dedicated to the much more extreme W43 molecular complex, which forms stars up to 50 M ⊙. Both reveal high-density cloud filaments of several pc3, which are forming clusters of OB-type stars. Given their activity, these so-called mini-starburst cloud ridges could be seen as ``miniature and instant models'' of starburst galaxies. Both surveys also strongly suggest that high-mass prestellar cores do not exist, in agreement with the dynamical formation of cloud ridges. The HOBYS and W43 surveys are necessary steps towards Galaxy-wide studies of high-mass star formation.

  16. Desempenho alimentar e sobrevivência de Euschistus heros parasitado por Hexacladia smithii em sementes de soja

    Nunes Maria Clarice

    2002-01-01

    Full Text Available Avaliou-se, em laboratório, a influência do parasitóide Hexacladia smithii Ashmead (Hymenoptera: Encyrtidae na atividade alimentar e sobrevivência de Euschistus heros (Fabricius (Hemiptera: Pentatomidae, aos 10, 20, 30 e 40 dias após o início do parasitismo. A atividade alimentar foi avaliada pelo número de bainhas constatadas nas sementes de soja, Glycine max (L. Merrill (Fabaceae, em 48 horas de alimentação. O teste foi mantido sob condições controladas de temperatura (25±2°C, umidade (65±10% e fotoperíodo (14L:10E. No início do desenvolvimento de H. smithii a atividade alimentar dos percevejos não-parasitados e parasitados foi semelhante, obtendo-se, entretanto, duas vezes mais bainhas alimentares depositadas/grão pelos machos e fêmeas, após 30 dias de parasitismo. A sobrevivência dos percevejos parasitados foi menor que a dos percevejos não-parasitados, alcançando 100% de mortalidade 40 a 50 dias após o início do parasitismo. A redução na sobrevivência dos percevejos parasitados por H. smithii e a atividade alimentar, semelhante a dos percevejos não-parasitados durante quase todo o período de desenvolvimento do parasitóide, destacam a contribuição desse parasitismo na redução da população do percevejo-marrom E. heros.

  17. Informed consent during the clinical emergency of acute myocardial infarction (HERO-2 consent substudy): a prospective observational study.

    Williams, Barbara F; French, John K; White, Harvey D

    2003-03-15

    Anxiety, fear, pain, and treatment with morphine might compromise the ability of patients to comprehend information about, and give informed consent for, participation in clinical trials. We aimed to assess whether patients with acute myocardial infarction could understand written and verbal information and whether they were competent to give autonomous informed consent to participate in a clinical trial. We prospectively studied 399 patients with acute myocardial infarction in 16 hospitals in New Zealand and Australia who were eligible for participation in the Hirulog and Early Reperfusion or Occlusion (HERO)-2 trial. We assessed readability of patient information sheets, patients' educational status, their views of the consent process, comprehension of verbal and written information, and competence to give consent. The patient information sheet needed a year 13 (age 18) educational level for comprehension, although only 75 of 345 patients (22%) had been educated beyond secondary school. Only 63 of 346 (18%) read the patient information sheet before giving or refusing consent to participate. Patients who gave consent were more likely to report good or partial comprehension of the information provided than were those who refused consent (272 [89%] vs 14 [70%], respectively; p=0.009). In an assessment of competence to make an autonomous decision, 75 of 145 (52%) were ranked at the lowest grade and 26 (18%) were not competent to consent. Although the consent process for HERO-2 met regulatory requirements for clinical trials, it was inappropriate for the needs of most patients. The patients' comprehension of the information provided and their competence to autonomously give consent was less than optimum.

  18. Monitoramento do percevejo marrom Euschistus heros (Hemiptera: Pentatomidae por feromônio sexual em lavoura de soja

    Valvenarg Pereira da Silva

    2014-11-01

    Full Text Available O objetivo deste trabalho foi avaliar a eficiência das formulações septo de borracha e lure do feromônio sexual do percevejo marrom Euschistus heros e compará-la ao método do pano de batida, para o monitoramento dessa praga em lavoura de soja. Os tratamentos foram: feromônio em septo de borracha, feromônio em lure e amostragem com pano de batida. As amostragens foram realizadas semanalmente durante a fase reprodutiva da soja (dez semanas. Para estimar a densidade populacional de percevejos e compará-la à captura nas armadilhas de feromônio, foram efetuados quatro panos de batida por semana em todas as parcelas; além disso, foi determinado o número de percevejos capturados nas armadilhas por semana. Os danos provocados pelos percevejos nas sementes foram analisados pelo teste de tetrazólio. As formulações do feromônio foram eficientes na captura de E. heros, e a formulação em lure capturou mais percevejos. O controle precoce da população, indicado pelo nível de controle nas armadilhas com feromônio, resultou em sementes com maior qualidade do que as provenientes das parcelas monitoradas pelo pano de batida. Assim, as armadilhas com feromônio são mais eficientes que o pano de batida para o monitoramento das populações de percevejos durante a fase crítica do ataque deste inseto nas lavouras de soja.

  19. Reactor core of nuclear reactor

    Sasagawa, Masaru; Masuda, Hiroyuki; Mogi, Toshihiko; Kanazawa, Nobuhiro.

    1994-01-01

    In a reactor core, a fuel inventory at an outer peripheral region is made smaller than that at a central region. Fuel assemblies comprising a small number of large-diameter fuel rods are used at the central region and fuel assemblies comprising a great number of smalldiameter fuel rods are used at the outer peripheral region. Since a burning degradation rate of the fuels at the outer peripheral region can be increased, the burning degradation rate at the infinite multiplication factor of fuels at the outer region can substantially be made identical with that of the fuels in the inner region. As a result, the power distribution in the direction of the reactor core can be flattened throughout the entire period of the burning cycle. Further, it is also possible to make the degradation rate of fuels at the outer region substantially identical with that of fuels at the inner side. A power peak formed at the outer circumferential portion of the reactor core of advanced burning can be lowered to improve the fuel integrity, and also improve the reactor safety and operation efficiency. (N.H.)

  20. Nuclear reactor

    Gibbons, J.F.; McLaughlin, D.J.

    1978-01-01

    In the pressure vessel of the water-cooled nuclear reactor there is provided an internal flange on which the one- or two-part core barrel is hanging by means of an external flange. A cylinder is extending from the reactor vessel closure downwards to a seat on the core cupport structure and serves as compression element for the transmission of the clamping load from the closure head to the core barrel (upper guide structure). With the core barrel, subject to tensile stress, between the vessel internal flange and its seat on one hand and the compression of the cylinder resp. hold-down element between the closure head and the seat on the other a very strong, elastic sprung structure is obtained. (DG) [de

  1. Nuclear reactor

    Sasaki, Tomozo.

    1987-01-01

    Purpose: To improve the nuclear reactor availability by enabling to continuously exchange fuels in the natural-slightly enriched uranium region during operation. Constitution: A control rod is withdrawn to the midway of a highly enriched uranium region by means of control rod drives and the highly enriched uranium region is burnt to maintain the nuclear reactor always at a critical state. At the same time, fresh uranium-slightly enriched uranium is continuously supplied gravitationally from a fresh fuel reservoir through fuel reservoir to each of fuel pipes in the natural-slightly enriched uranium region. Then, spent fuels reduced with the reactivity by the burn up are successively taken out from the bottom of each of the fuel pipes through an exit duct and a solenoid valve to the inside of a spent fuel reservoir and the burn up in the natural-slightly enriched uranium region is conducted continuously. (Kawakami, Y.)

  2. Nuclear reactor

    Sakurai, Mikio; Yamauchi, Koki.

    1983-01-01

    Purpose: To improve the channel stability and the reactor core stability in a spontaneous circulation state of coolants. Constitution: A reactor core stabilizing device comprising a differential pressure automatic ON-OFF valve is disposed between each of a plurality of jet pumps arranged on a pump deck. The stabilizing device comprises a piston exerted with a pressure on the lower side of the pump deck by way of a pipeway and a valve for flowing coolants through the bypass opening disposed to the pump deck by the opening and closure of the valve ON-OFF. In a case where the jet pumps are stopped, since the differential pressure between the upper and the lower sides of the pump deck is removed, the valve lowers gravitationally into an opened state, whereby the coolants flow through the bypass opening to increase the spontaneous circulation amount thereby improve the stability. (Yoshino, Y.)

  3. Nuclear reactor

    Aleite, W.; Bock, H.W.; Struensee, S.

    1976-01-01

    The invention concerns the use of burnable poisons in a nuclear reactor, especially in PWRs, in order to improve the controllability of the reactor. An unsymmetrical arrangement in the lattice is provided, if necessary also by insertion of special rods for these additions. It is proposed to arrange the burnable poisons in fuel elements taken over from a previous burn-up cycle and to distribute them, going out from the side facing the control rods, over not more than 20% of the lenth of the fuel elements. It seems sufficient, for the burnable poisons to bind an initial reactivity of only 0.1% and to become ineffective after normal operation of 3 to 4 months. (ORU) [de

  4. Reactor container

    Ichiki, Tadaharu; Saba, Kazuhisa.

    1979-01-01

    Purpose: To improve the earthquake resistance as well as reduce the size of a container for a nuclear reactor with no adverse effects on the decrease of impact shock to the container and shortening of construction step. Constitution: Reinforcing profile steel materials are welded longitudinally and transversely to the inner surface of a container, and inner steel plates are secured to the above profile steel materials while keeping a gap between the materials and the container. Reactor shielding wall planted to the base concrete of the container is mounted to the pressure vessel, and main steam pipeways secured by the transverse beams and led to the outside of container is connected. This can improve the rigidity earthquake strength and the safetiness against the increase in the inside pressure upon failures of the container. (Yoshino, Y.)

  5. Reactor container

    Oyamada, Osamu; Furukawa, Hideyasu; Uozumi, Hiroto.

    1979-01-01

    Purpose: To lower the position of an intermediate slab within a reactor container and fitting a heat insulating material to the inner wall of said intermediate slab, whereby a space for a control rod exchanging device and thermal stresses of the inner peripheral wall are lowered. Constitution: In the pedestal at the lower part of a reactor pressure vessel there is formed an intermediate slab at a position lower than diaphragm floor slab of the outer periphery of the pedestal thereby to secure a space for providing automatic exchanging device of a control rod driving device. Futhermore, a heat insulating material is fitted to the inner peripheral wall at the upper side of the intermediate slab part, and the temperature gradient in the wall thickness direction at the time of a piping rupture trouble is made gentle, and thermal stresses at the inner peripheral wall are lowered. (Sekiya, K.)

  6. Neutronic reactor

    Lewis, W.R.

    1978-01-01

    Disclosed is a graphite-moderated, water-cooled nuclear reactor including a plurality of rectangular graphite blocks stacked in abutting relationship in layers, alternate layers having axes which are normal to one another, alternate rows of blocks in alternate layers being provided with a channel extending through the blocks, said channeled blocks being provided with concave sides and having smaller vertical dimensions than adjacent blocks in the same layer, there being nuclear fuel in the channels

  7. Nuclear reactors

    Humphreys, P.; Davidson, D.F.; Thatcher, G.

    1980-01-01

    The cooling system of a liquid metal cooled fast breeder nuclear reactor of the pool kind is described. It has an intermediate heat exchange module comprising a tube-in-shell heat exchanger and an electromagnetic flow coupler in the base region of the module. Primary coolant is flowed through the heat exchanger being driven by electromagnetic interaction with secondary liquid metal coolant flow effected by a mechanical pump. (author)

  8. Nuclear reactor

    Jungmann, A.

    1975-01-01

    Between a PWR's reactor pressure vessel made of steel and the biological shield made of concrete there is a gap. This gap is filled up with a heat insulation facting the reactor pressure vessel, for example with insulating concrete segments jacketed with sheet steel and with an additional layer. This layer serves for smooth absorption of compressive forces originating in radial direction from the reactor pressure vessel. It consists of cylinder-segment shaped bricks made of on situ concrete, for instance. The bricks have cooling agent ports in one or several rows which run parallel to the wall of the pressure vessel and in alignment with superposed bricks. Between the layer of bricks and the biological shield or rather the heat insulation, there are joints which are filled, however, with injected mortar. That guarantees a smooth series of connected components resistant tom compression. Besides, a slip foil can be set between the heat insulation and the joining joint filled with mortar for the reduction of the friction at thermal expansions. (TK) [de

  9. Reactor building

    Ebata, Sakae.

    1990-01-01

    At least one valve rack is disposed in a reactor building, on which pipeways to a main closure valve, valves and bypasses of turbines are placed and contained. The valve rack is fixed to the main body of the building or to a base mat. Since the reactor building is designed as class A earthquake-proofness and for maintaining the S 1 function, the valve rack can be fixed to the building main body or to the base mat. With such a constitution, the portions for maintaining the S 1 function are concentrated to the reactor building. As a result, the dispersion of structures of earthquake-proof portion corresponding to the reference earthquake vibration S 1 can be prevented. Accordingly, the conditions for the earthquake-proof design of the turbine building and the turbine/electric generator supporting rack are defined as only the class B earthquake-proof design conditions. In view of the above, the amount of building materials can be saved and the time for construction can be shortened. (I.S.)

  10. Nuclear reactors

    Yoshioka, Michiko.

    1985-01-01

    Purpose: To obtain an optimum structural arrangement of IRM having a satisfactory responsibility to the inoperable state of a nuclear reactor and capable of detecting the reactor power in an averaged manner. Constitution: As the structural arrangement of IRM, from 6 to 16 even number of IRM are bisected into equial number so as to belong two trip systems respectively, in which all of the detectors are arranged at an equal pitch along a circumference of a circle with a radius rl having the center at the position of the central control rod in one trip system, while one detector is disposed near the central control rod and other detectors are arranged substantially at an equal pitch along the circumference of a circle with a radius r2 having the center at the position for the central control rod in another trip system. Furthermore, the radius r1 and r2 are set such that r1 = 0.3 R, r2 = 0.5 R in the case where there are 6 IRM and r1 = 0.4 R and R2 = 0.8 R where there are eight IRM where R represents the radius of the reactor core. (Kawakami, Y.)

  11. MLR reactor

    Ryazantsev, E.P.; Egorenkov, P.M.; Nasonov, V.A.; Smimov, A.M.; Taliev, A.V.; Gromov, B.F.; Kousin, V.V.; Lantsov, M.N.; Radchenko, V.P.; Sharapov, V.N.

    1998-01-01

    The Material Testing Loop Reactor (MLR) development was commenced in 1991 with the aim of updating and widening Russia's experimental base to validate the selected directions of further progress of the nuclear power industry in Russia and to enhance its reliability and safety. The MLR reactor is the pool-type one. As coolant it applies light water and as side reflector beryllium. The direction of water circulation in the core is upward. The core comprises 30 FA arranged as hexagonal lattice with the 90-95 mm pitch. The central materials channel and six loop channels are sited in the core. The reflector includes up to 11 loop channels. The reactor power is 100 MW. The average power density of the core is 0.4 MW/I (maximal value 1.0 MW/l). The maximum neutron flux density is 7.10 14 n/cm 2 s in the core (E>0.1 MeV), and 5.10 14 n/cm 2 s in the reflector (E<0.625 eV). In 1995 due to the lack of funding the MLR designing was suspended. (author)

  12. Nuclear reactor

    Shirakawa, Toshihisa.

    1979-01-01

    Purpose: To prevent cladding tube injuries due to thermal expansion of each of the pellets by successively extracting each of the control rods loaded in the reactor core from those having less number of notches, as well as facilitate the handling work for the control rods. Constitution: A recycle flow control device is provided to a circulation pump for forcibly circulating coolants in the reactor container and an operational device is provided for receiving each of the signals concerning number of notches for each of the control rods and flow control depending on the xenon poisoning effect obtained from the signals derived from the in-core instrument system connected to the reactor core. The operational device is connected with a control rod drive for moving each of the control rods up and down and a recycle flow control device. The operational device is set with a pattern for the aimed control rod power and the sequence of extraction. Upon extraction of the control rods, they are extracted successively from those having less notch numbers. (Moriyama, K.)

  13. Reactor container

    Hidaka, Masataka; Hatamiya, Shigeo; Kawasaki, Terufumi; Fukui, Toru; Suzuki, Hiroaki; Kataoka, Yoshiyuki; Kawabe, Ryuhei; Murase, Michio; Naito, Masanori.

    1990-01-01

    In order to suppress the pressure elevation in a reactor container due to high temperature and high pressure steams jetted out upon pipeway rupture accidents in the reactor container, the steams are introduced to a pressure suppression chamber for condensating them in stored coolants. However, the ability for suppressing the pressure elevation and steam coagulation are deteriorated due to the presence of inactive incondensible gases. Then, there are disposed a vent channel for introducing the steams in a dry well to a pressure suppression chamber in the reactor pressure vessel, a closed space disposed at the position lower than a usual liquid level, a first channel having an inlet in the pressure suppression chamber and an exit in the closed space and a second means connected by way of a backflow checking means for preventing the flow directing to the closed space. The first paths are present by plurality, a portion of which constitutes a syphon. The incondensible gases and the steams are discharged to the dry well at high pressure by using the difference of the water head for a long cooling time after the pipeway rupture accident. Then, safety can be improved without using dynamic equipments as driving source. (N.H.)

  14. Reactor core in FBR type reactor

    Masumi, Ryoji; Kawashima, Katsuyuki; Kurihara, Kunitoshi.

    1989-01-01

    In a reactor core in FBR type reactors, a portion of homogenous fuels constituting the homogenous reactor core is replaced with multi-region fuels in which the enrichment degree of fissile materials is lower nearer to the axial center. This enables to condition the composition such that a reactor core having neutron flux distribution either of a homogenous reactor core or a heterogenous reactor core has substantially identical reactivity. Accordingly, in the transfer from the homogenous reactor core to the axially heterogenous reactor core, the average reactivity in the reactor core is substantially equal in each of the cycles. Further, by replacing a portion of the homogenous fuels with a multi-region fuels, thereby increasing the heat generation near the axial center, it is possiable to reduce the linear power output in the regions above and below thereof and, in addition, to improve the thermal margin in the reactor core. (T.M.)

  15. Comparison of effects of ProTaper, HeroShaper, and Gates Glidden Burs on cervical dentin thickness and root canal volume by using multislice computed tomography.

    Mahran, Abeer H; AboEl-Fotouh, Mona M

    2008-10-01

    The purpose of this study was to compare the effects of 3 different instruments used to prepare curved root canals on the remaining cervical dentin thickness and total amount of dentin removed from root canals during instrumentation by using multislice computed tomography. Mesiobuccal canals of 45 mandibular first molars with curvature between 30-40 degrees were divided into 3 equal groups: ProTaper, Hero Shaper, and Gates Glidden Bur with Flex-R hand file. Cervical dentin thickness and canal volume were measured before and after instrumentation by using multislice computed tomography and image analysis software. The results indicated that ProTaper removed significantly less cervical dentin from distal wall of the root (dangerous zone) than HeroShaper and Gates Glidden Bur (P ProTaper system (P < .05).

  16. El mito de hero y leandro: Algunas Fuentes grecolatinas y su pervivencia en el siglo de oro Español

    María Jesús Franco Durán

    1994-12-01

    Full Text Available El mito de Hero y Leandro no se relaciona con ningún ciclo heroico concreto sino que, como tantas otras historias, vive independiente del resto. Es posible localizar la leyenda en un entomo geográfico bien delimitado, el Helesponto, entre las ciudades de Sesto, en Ia ribera europea, y Abido, en Ia asiatica, y cuya distancia ya había sido fijada por los antiguos, casi con total unanimidad, en 1295 metros. Museo es el autor que nos relata la fábula con más profundidad y detalle, dedicándole al asunto un poema completo que consta de trescientos cuarenta y tres versos. Leandro es un joven residente en Abido. Hero es una mujer muy bella de Sesto, sacerdotisa de Afrodita que se mantiene virgen, ignorando el matrimonio y viviendo en una torre con Ia única compañía de una sirvienta.

  17. Molten salt reactors: reactor cores

    1983-01-01

    In this critical analysis of the MSBR I project are examined the problems concerning the reactor core. Advantages of breeding depend essentially upon solutions to technological problems like continuous reprocessing or graphite behavior under neutron irradiation. Graphite deformation, moderator unloading, control rods and core instrumentation require more studies. Neutronics of the core, influence of core geometry and salt composition, fuel evolution, and thermohydraulics are reviewed [fr

  18. Increased SRP reactor power

    MacAfee, I.M.

    1983-01-01

    Major changes in the current reactor hydraulic systems could be made to achieve a total of about 1500 MW increase of reactor power for P, K, and C reactors. The changes would be to install new, larger heat exchangers in the reactor buildings to increase heat transfer area about 24%, to increase H 2 O flow about 30% per reactor, to increase D 2 O flow 15 to 18% per reactor, and increase reactor blanket gas pressure from 5 psig to 10 psig. The increased reactor power is possible because of reduced inlet temperature of reactor coolant, increased heat removal capacity, and increased operating pressure (larger margin from boiling). The 23% reactor power increase, after adjustment for increased off-line time for reactor reloading, will provide a 15% increase of production from P, K, and C reactors. Restart of L Reactor would increase SRP production 33%

  19. True Grit: In Tracking down the Real Story of a Legendary Hero of the Old West, Vaunda Micheaux Nelson also Nabbed the Coretta Scott King Award

    Fleishhacker, Joy

    2010-01-01

    When Vaunda Micheaux Nelson donned a black Stetson to become the biographer of Deputy U.S. Marshal Bass Reeves, she had no idea that her square-shooting book about an unsung African-American hero of the Old West would win over a posse of fans and earn her the prestigious 2010 Coretta Scott King (CSK) Author Award. "Bad News for Outlaws"…

  20. No impact of Bt soybean that express Cry1Ac protein on biological traits of Euschistus heros (Hemiptera, Pentatomidae and its egg parasitoid Telenomus podisi (Hymenoptera, Platygastridae

    Gabriela Vieira Silva

    2014-09-01

    Full Text Available No impact of Bt soybean that express Cry1Ac protein on biological traits of Euschistus heros (Hemiptera, Pentatomidae and its egg parasitoid Telenomus podisi (Hymenoptera, Platygastridae. Biological traits of the stink bug Euschistus heros and its main biological control agent Telenomus podisi were evaluated under controlled environmental conditions (25 ± 2ºC; 60 ± 10% RH; and 14/10 h photoperiod by placing first instar nymphs into Petri dishes with pods originating from two soybean isolines (Bt-soybean MON 87701 × MON 89788, which expresses the Cry1Ac protein, and its near non-Bt isoline A5547 where they remained until the adult stage. Due to gregarious behavior exhibited by first instar nymphs, they were individualized only when at the second instar. Adults were separated by sex and weighed, and pronotum width of each individual was subsequently measured. They were placed into plastic boxes containing soybean grains of the same soybean isoline as food source. Egg viability and female fecundity were assessed in adult individuals. Adult females of T. podisi (up to 24h old were placed with eggs of E. heros from mothers reared on both soybean isolines. Nymphal development time, insect weight, pronotum width, sex ratio, female fecundity, and egg viability (% emergence of Euschistus heros did not differ between treatments. Eggto-adult development time, female longevity, sex ratio, and percentage of parasitized eggs were not impacted by the Bt-soybean (expressing Cry1Ac protein. Results indicate that the Bt-soybean, MON 87701 × MON 89788, has no direct significant impact on the two studied species.

  1. Nuclear research reactors

    1985-01-01

    It's presented data about nuclear research reactors in the world, retrieved from the Sien (Nuclear and Energetic Information System) data bank. The information are organized in table forms as follows: research reactors by countries; research reactors by type; research reactors by fuel and research reactors by purpose. (E.G.) [pt

  2. Nuclear reactor physics course for reactor operators

    Baeten, P.

    2006-01-01

    The education and training of nuclear reactor operators is important to guarantee the safe operation of present and future nuclear reactors. Therefore, a course on basic 'Nuclear reactor physics' in the initial and continuous training of reactor operators has proven to be indispensable. In most countries, such training also results from the direct request from the safety authorities to assure the high level of competence of the staff in nuclear reactors. The aim of the basic course on 'Nuclear Reactor Physics for reactor operators' is to provide the reactor operators with a basic understanding of the main concepts relevant to nuclear reactors. Seen the education level of the participants, mathematical derivations are simplified and reduced to a minimum, but not completely eliminated

  3. The human error rate assessment and optimizing system HEROS - a new procedure for evaluating and optimizing the man-machine interface in PSA

    Richei, A.; Hauptmanns, U.; Unger, H.

    2001-01-01

    A new procedure allowing the probabilistic evaluation and optimization of the man-machine system is presented. This procedure and the resulting expert system HEROS, which is an acronym for Human Error Rate Assessment and Optimizing System, is based on the fuzzy set theory. Most of the well-known procedures employed for the probabilistic evaluation of human factors involve the use of vague linguistic statements on performance shaping factors to select and to modify basic human error probabilities from the associated databases. This implies a large portion of subjectivity. Vague statements are expressed here in terms of fuzzy numbers or intervals which allow mathematical operations to be performed on them. A model of the man-machine system is the basis of the procedure. A fuzzy rule-based expert system was derived from ergonomic and psychological studies. Hence, it does not rely on a database, whose transferability to situations different from its origin is questionable. In this way, subjective elements are eliminated to a large extent. HEROS facilitates the importance analysis for the evaluation of human factors, which is necessary for optimizing the man-machine system. HEROS is applied to the analysis of a simple diagnosis of task of the operating personnel in a nuclear power plant

  4. Entre Venus y Marte: el viaje del héroe en Desertor (Between Venus and Mars: The Journey of the Hero in Desertor

    Grethel Ramírez Villalobos

    2015-11-01

    Full Text Available En este artículo se estudia la figura del héroe en la novela Desertor, del costarricense Juan Ramón Rojas. Este relato tiene su ambiente en El Salvador y analiza algunos de los principales hechos históricos de la década de 1980. El protagonista del relato se ve impulsado a revisar sus propias convicciones políticas y emprende un viaje, que resulta análogo a los periplos de los héroes mitológicos. A partir del examen de la conformación del héroe, se discuten los simbolismos literarios y los principales asuntos tratados en la novela. This article addresses the figure of the hero in the novel Desertor, by the Costa Rican Juan Ramón Rojas. It takes place in El Salvador and analyzes some of the main historical events of the 1980s. The protagonist is forced to review his own political convictions and sets out on a journey analogous to those of mythological heroes. Considering the analysis of the conformation of the hero, literary symbolism and the main topics of the novel are examined.

  5. Nuclear reactor

    Jolly, R.

    1979-01-01

    The support grid for the fuel rods of a liquid metal cooled fast breeder reactor has a regular hexagonal contour and contains a large number of unit cells arranged honeycomb fashion. The totality of these cells make up a hexagonal shape. The grid contains a number of strips of material, and there is a window in each of three sidewalls staggered by one sidewall. The other sidewalls have embossed protrusions, thus generating a guide lining or guide bead. The windows reduce the rigidity of the areas in the middle between the ends of the cells. (DG) [de

  6. Nuclear reactor

    Anthony, A.J.; Gruber, E.A.

    1979-01-01

    A nuclear reactor with control rods in channels between fuel assemblies wherein the fuel assemblies incorporate guide rods which protrude outwardly into the control rod channels to prevent the control rods from engaging the fuel elements. The guide rods also extend back into the fuel assembly such that they are relatively rigid members. The guide rods are tied to the fuel assembly end or support plates and serve as structural members which are supported independently of the fuel element. Fuel element spacing and support means may be attached to the guide rods. 9 claims

  7. Nuclear reactors

    Prescott, R.F.; George, B.V.; Baglin, C.J.

    1979-01-01

    In a nuclear reactor (e.g. one having coolant down-flow through a core to a hearth below) thermal insulation (e.g. of a floor of the hearth) comprises a layer of bricks and a layer of tiles thereon, with smaller clearances between the tiles than between the bricks but with the bricks being of reduced cross-section immediately adjacent the tiles so as to be surrounded by interconnected passages, of relatively large dimensions, constituting a continuous chamber extending behind the layer of tiles. By this arrangement, lateral coolant flow in the inter-brick clearances is much reduced. The reactor core is preferably formed of hexagonal columns, supported on diamond-shaped plates each supported on a pillar resting on one of the hearth-floor tiles. Each plate has an internal duct, four upper channels connecting the duct with coolant ducts in four core columns supported by the plate, and lower channels connecting the duct to a downwardly-open recess common to three plates, grouped to form a hexagon, at their mutually-adjacent corners. This provides mixing, and temperature-averaging, of coolant from twelve columns

  8. Reactor container

    Oikawa, Hirohide; Otonari, Jun-ichiro; Tozaki, Yuka.

    1993-01-01

    Partition walls are disposed between a reactor pressure vessel and a suppression chamber to separate a dry well to an upper portion and a lower portion. A communication pipe is disposed to the partition walls. One end of the communication pipe is opened in an upper portion of the dry well at a position higher than a hole disposed to a bent tube of the suppression chamber. When coolants overflow from a depressurization valve by an erroneous operation of an emergency reactor core cooling device, the coolants accumulate in the upper portion of the dry well. When the pipeline is ruptured at the upper portion of the pressure vessel, only the inside of the pressure vessel and the upper portion of the dry well are submerged in water. In this case, the water level of the coolants does not elevate to the opening of the commuication pipe but they flow into the suppression chamber from the hole disposed to the bent tube. Since the coolants do not flow out to the lower portion of the dry well, important equipments such as control rod drives disposed at the lower portion of the dry wall can be prevented from submerging in water. (I.N.)

  9. Reactor monitor

    Takada, Tamotsu.

    1992-01-01

    The device of the present invention monitors a reactor so that each of the operations for the relocation of fuel assemblies and the withdrawal and the insertion of control rods upon exchange of fuel assemblies and control rods in the reactor. That is, when an operator conducts relocating operation by way of a fuel assembly operation section, the device of the present invention judges whether the operation indication is adequate or not, based on the information of control rod arrangement in a control rod memory section. When the operation indication is wrong, a stop signal is sent to a fuel assembly relocating device. Further, when the operator conducts control rod operation by way of a control rod operation section, the device of the present invention judges in the control rod withdrawal judging section, as to whether the operation indication given by the operator is adequate or not by comparing it with fuel assembly arrangement information. When the operation indication is wrong, a stop signal is sent to control rod drives. With such procedures, increase of nuclear heating upon occurrence of erroneous operation can be prevented. (I.S.)

  10. Nuclear reactors

    Matheson, J.E.

    1983-01-01

    A nuclear reactor has an upper and a lower grid plate. Protrusions project from the upper grid plate. Fuel assemblies having end fittings fit between the grid plates. An arrangement is provided for accepting axial forces generated during the operation of the nuclear reactor by the flow of the cooling medium and thermal expansion and irradiation-induced growth of the fuel assembly, which comprises rods. Each fuel assembly rests on the lower grid plate and its upper end is elastically supported against the upper grid plate by the above-mentioned arrangement. The arrangement comprises four (for example) torsion springs each having a torsion tube and a torsion bar nested within the torsion tube and connected at one end thereto. The other end of the torsion bar is connected to an associated one of four lever arms. The torsion tube is rigidly connected to the other end fitting and the springs are disposed such that the lever arms are biassed against the protrusions. (author)

  11. Reactor core fuel management

    Silvennoinen, P.

    1976-01-01

    The subject is covered in chapters, entitled: concepts of reactor physics; neutron diffusion; core heat transfer; reactivity; reactor operation; variables of core management; computer code modules; alternative reactor concepts; methods of optimization; general system aspects. (U.K.)

  12. Hybrid adsorptive membrane reactor

    Tsotsis, Theodore T [Huntington Beach, CA; Sahimi, Muhammad [Altadena, CA; Fayyaz-Najafi, Babak [Richmond, CA; Harale, Aadesh [Los Angeles, CA; Park, Byoung-Gi [Yeosu, KR; Liu, Paul K. T. [Lafayette Hill, PA

    2011-03-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  13. Reactor outage schedule (tentative)

    Walton, R.P.

    1969-11-01

    This single page document is the November 1, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the production reactor.

  14. Reactor outage schedule (tentative)

    Walton, R.P.

    1969-10-01

    This single page document is the October 1, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the Production Reactor.

  15. Reactor outage schedule (tentative)

    Walton, R.P.

    1969-10-15

    This single page document is the October 15, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the Production Reactor.

  16. Reactor outage schedule (tentative)

    Walton, R.P.

    1969-09-15

    This single page document is the September 15, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the Production Reactor.

  17. Reactor outage schedule (tentative)

    Walton, R.P.

    1969-12-15

    This single page document is the December 16, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the Production reactor.

  18. Reactor outage schedule (tentative)

    Walton, R.P.

    1969-12-01

    This single page document is the December 1, 1969 reactor refueling outage schedule for the Hanford Production Reactor. It also contains data on the amounts and types of fuels to be loaded and relocated in the Production reactor.

  19. Reactor theory and power reactors. 1. Calculational methods for reactors. 2. Reactor kinetics

    Henry, A.F.

    1980-01-01

    Various methods for calculation of neutron flux in power reactors are discussed. Some mathematical models used to describe transients in nuclear reactors and techniques for the reactor kinetics' relevant equations solution are also presented

  20. The CEA research reactors

    Schwartz, J.P.

    1993-01-01

    Two main research reactors, specifically designed, PEGASE reactor and Laue-Langevin high flux reactor, are presented. The PEGASE reactor was designed at the end of the 50s for the study of the gas cooled reactor fuel element behaviour under irradiation; the HFR reactor, was designed in the late 60s to serve as a high yield and high level neutron source. Historical backgrounds, core and fuel characteristics and design, flux characteristics, etc., are presented. 5 figs

  1. Atomic reactor thermal engineering

    Kim, Gwang Ryong

    1983-02-01

    This book starts the introduction of atomic reactor thermal engineering including atomic reaction, chemical reaction, nuclear reaction neutron energy and soon. It explains heat transfer, heat production in the atomic reactor, heat transfer of fuel element in atomic reactor, heat transfer and flow of cooler, thermal design of atomic reactor, design of thermodynamics of atomic reactor and various. This deals with the basic knowledge of thermal engineering for atomic reactor.

  2. Nuclear reactor types

    Jones, P.M.S.

    1987-01-01

    The characteristics of different reactor types designed to exploit controlled fission reactions are explained. Reactors vary from low power research devices to high power devices especially designed to produce heat, either for direct use or to produce steam to drive turbines to generate electricity or propel ships. A general outline of basic reactors (thermal and fast) is given and then the different designs considered. The first are gas cooled, including the Magnox reactors (a list of UK Magnox stations and reactor performance is given), advanced gas cooled reactors (a list of UK AGRs is given) and the high temperature reactor. Light water cooled reactors (pressurized water [PWR] and boiling water [BWR] reactors) are considered next. Heavy water reactors are explained and listed. The pressurized heavy water reactors (including CANDU type reactors), boiling light water, steam generating heavy water reactors and gas cooled heavy water reactors all come into this category. Fast reactors (liquid metal fast breeder reactors and gas cooled fast reactors) and then water-cooled graphite-moderated reactors (RBMK) (the type at Chernobyl-4) are discussed. (U.K.)

  3. Reactor safety

    Meneley, D.A.

    The people of Ontario have begun to receive the benefits of a low cost, assured supply of electrical energy from CANDU nuclear stations. This indigenous energy source also has excellent safety characteristics. Safety has been one of the central themes of the CANDU development program from its very beginning. A great deal of work has been done to establish that public risks are small. However, safety design criteria are now undergoing extensive review, with a real prospect of more stringent requirements being applied in the future. Considering the newness of the technology it is not surprising that a consensus does not yet exist; this makes it imperative to discuss the issues. It is time to examine the policies and practice of reactor safety management in Canada to decide whether or not further restrictions are justified in the light of current knowledge

  4. Nuclear reactor

    Schabert, H.P.; Weber, R.; Bauer, A.

    1975-01-01

    The refuelling of a PWR power reactor of about 1,200 MWe is performed by a transport pipe in the containment leading from an external to an internal fuel pit. A wagon to transport the fuel elements can go from a vertical loading position to an also vertical deloading position in the inner fuel pit via guide rollers. The necessary horizontal movement is effected by means of a cable line through the transport pipe which is inclined at least 10 0 . Gravity thus helps in the movement to the deloading position. The cable line with winch is fastened outside the containment. Swivelling devices tip the wagon from the horizontal to the vertical position or vice versa. Loading and deloading are done laterally. (TK/LH) [de

  5. Nuclear reactor

    Schweiger, F.; Glahe, E.

    1976-01-01

    In a nuclear reactor of the kind which is charged with spherical reaction elements and in which control rods are arranged to be thrust directly into the charge, each control rod has at least one screw thread on its external surface so that as the rod is thrust into the charge it is caused to rotate and thus make penetration easier. The length of each control rod may have two distinct portions, a latter portion which carries a screw thread and a lead-in portion which is shorter than the latter portion and which may carry a thread of greater pitch than that on the latter portion or may have a number of axially extending ribs instead of a thread

  6. Reactor container

    Furukawa, Hideyasu; Oyamada, Osamu; Uozumi, Hiroto.

    1976-01-01

    Purpose: To provide a container for a reactor provided with a pressure suppressing chamber pool which can prevent bubble vibrating load, particularly negative pressure generated at the time of starting to release exhaust from a main steam escape-safety valve from being transmitted to a lower liner plate of the container. Constitution: This arrangement is characterized in that a safety valve exhaust pool for main steam escape, in which a pressure suppressing chamber pool is separated and intercepted from pool water in the pressure suppressing chamber pool, a safety valve exhaust pipe is open into said safety valve exhaust pool, and an isolator member, which isolates the bottom liner plate in the pressure suppressing chamber pool from the pool water, is disposed on the bottom of the safety valve exhaust pool. (Nakamura, S.)

  7. Nuclear reactors

    Prescott, R.F.

    1976-01-01

    In the system described the fuel elements are arranged vertically in groups and are supported in such a manner as to tend to tilt them towards the center of the respective group, the fuel elements being urged laterally into abutment with one another. The elements have interlocking bearing pads, whereby lateral movement of adjacent elements is resisted; this improves the stability of the reactor core during refuelling operations. Fuel elements may comprise clusters of parallel fuel pins enclosed in a wrapper of hexagonal cross section, with bearing pads in the form of spline-like ribs located on each side of the wrapper and extending parallel to the longitudinal axis of the fuel element, being interlockable with ribs on pads of adjacent fuel elements. The arrangement is applicable to a reactor core in which fuel elements and control rod guide tubes are arranged in modules each of which comprises a cluster of at least three fuel elements, one of which is rigidly supported whilst the others are resiliently tilted towards the center of the cluster so as to lean on the rigidly supported element. It is also applicable to modules comprising a cluster of six fuel elements, each resiliently tilted towards a central void to form a circular arch. The modules may include additional fuel elements located outside the clusters and also resiliently tilted towards the central voids, the latter being used to accommodate control rod guide tubes. The need for separate structural members to act as leaning posts is thus avoided. Such structural members are liable to irradiation embrittlement, that could lead to core failure. (U.K.)

  8. Nuclear reactor neutron shielding

    Speaker, Daniel P; Neeley, Gary W; Inman, James B

    2017-09-12

    A nuclear reactor includes a reactor pressure vessel and a nuclear reactor core comprising fissile material disposed in a lower portion of the reactor pressure vessel. The lower portion of the reactor pressure vessel is disposed in a reactor cavity. An annular neutron stop is located at an elevation above the uppermost elevation of the nuclear reactor core. The annular neutron stop comprises neutron absorbing material filling an annular gap between the reactor pressure vessel and the wall of the reactor cavity. The annular neutron stop may comprise an outer neutron stop ring attached to the wall of the reactor cavity, and an inner neutron stop ring attached to the reactor pressure vessel. An excore instrument guide tube penetrates through the annular neutron stop, and a neutron plug comprising neutron absorbing material is disposed in the tube at the penetration through the neutron stop.

  9. Functionality of resistance gene Hero, which controls plant root-infecting potato cyst nematodes, in leaves of tomato.

    Poch, H L Cabrera; López, R H Manzanilla; Kanyuka, K

    2006-07-01

    The expression of host genomes is modified locally by root endoparasitic nematode secretions to induce the development of complex cellular structures referred as feeding sites. In compatible interactions, the feeding sites provide the environment and nutrients for the completion of the nematode's life cycle, whereas in an incompatible (resistant) interaction, the host immune system triggers a plant cell death programme, often in the form of a hypersensitive reaction, which restricts nematode reproduction. These processes have been studied in great detail in organ tissues normally infected by these nematodes: the roots. Here we show that host leaves can support a similar set of programmed developmental events in the potato cyst nematode Globodera rostochiensis life cycle that are typical of the root-invading nematodes. We also show that a gene-for-gene type specific disease resistance that is effective against potato cyst nematodes (PCN) in roots also operates in leaves: the expression of the resistance (R) gene Hero and members of its gene family in leaves correlates with the elicitation of a hypersensitive response only during the incompatible interaction. These findings, and the ability to isolate RNA from relevant parasitic stages of the nematode, may have significant implications for the identification of nematode factors involved in incompatible interactions.

  10. Sexual Success after Stress? Imidacloprid-Induced Hormesis in Males of the Neotropical Stink Bug Euschistus heros

    Haddi, Khalid; Mendes, Marcos V.; Lino-Neto, José; Freitas, Hemerson L.; Guedes, Raul Narciso C.; Oliveira, Eugênio E.

    2016-01-01

    Environmental stress in newly-emerged adult insects can have dramatic consequences on their life traits (e.g., dispersion, survival and reproduction) as adults. For instance, insects sublethally exposed to environmental stressors (e.g., insecticides) can gain fitness benefits as a result of hormesis (i.e., benefits of low doses of compounds that would be toxic at higher doses). Here, we experimentally tested whether sublethal exposure to the insecticide imidacloprid would hormetically affect the sexual fitness of newly-emerged adults of the Neotropical brown stink bug Euschistus heros (Hemiptera: Heteroptera: Pentatomidae), which is the most abundant and prevalent insect pest in Neotropical soybean fields. We evaluated the sexual fitness of four couple combinations: unexposed couples, exposed females, exposed males, and exposed couples. Sublethal exposure to dry residues (i.e., contact) of imidacloprid (at 1% of recommended field rate) did not affect insect survival, but led to higher mating frequencies when at least one member of the couple was exposed. However, the average mating duration was shortened when only females were exposed to imidacloprid. Moreover, exposed males showed higher locomotory (walking) activity, lower respiration rates and induced higher fecundity rates when mated to unexposed females. Although the reproductive tracts of exposed males did not differ morphometrically from unexposed males, their accessory glands exhibited positive reactions for acidic and basic contents. Our findings suggest that males of the Neotropical brown stink bug hormetically increase their sexual fitness when cued by impending insecticidal stress in early adulthood. PMID:27284906

  11. How many new cancer patients in Europe will require radiotherapy by 2025? An ESTRO-HERO analysis.

    Borras, Josep M; Lievens, Yolande; Barton, Michael; Corral, Julieta; Ferlay, Jacques; Bray, Freddie; Grau, Cai

    2016-04-01

    The objective of this HERO study was to assess the number of new cancer patients that will require at least one course of radiotherapy by 2025. European cancer incidence data by tumor site and country for 2012 and 2025 was extracted from the GLOBOCAN database. The projection of the number of new cases took into account demographic factors (age and size of the population). Population based stages at diagnosis were taken from four European countries. Incidence and stage data were introduced in the Australian Collaboration for Cancer Outcomes Research and Evaluation (CCORE) model. Among the different tumor sites, the highest expected relative increase by 2025 in treatment courses was prostate cancer (24%) while lymphoma (13%), head and neck (12%) and breast cancer (10%) were below the average. Based on the projected cancer distributions in 2025, a 16% expected increase in the number of radiotherapy treatment courses was estimated. This increase varied across European countries from less than 5% to more than 30%. With the already existing disparity in radiotherapy resources in mind, the data provided here should act as a leverage point to raise awareness among European health policy makers of the need for investment in radiotherapy. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  12. Guidelines for equipment and staffing of radiotherapy facilities in the European countries: Final results of the ESTRO-HERO survey

    Dunscombe, Peter; Grau, Cai; Defourny, Noémie; Malicki, Julian; Borras, Josep M.; Coffey, Mary; Bogusz, Marta; Gasparotto, Chiara; Slotman, Ben; Lievens, Yolande; Kokobobo, Arianit; Sedlmayer, Felix; Slobina, Elena; De Hertogh, Olivier; Hadjieva, Tatiana; Petera, Jiri; Eriksen, Jesper Grau; Jaal, Jana; Bly, Ritva; Azria, David

    2014-01-01

    Background and purpose: In planning to meet evidence based needs for radiotherapy, guidelines for the provision of capital and human resources are central if access, quality and safety are not to be compromised. A component of the ESTRO-HERO (Health Economics in Radiation Oncology) project is to document the current availability and content of guidelines for radiotherapy in Europe. Materials and methods: An 84 part questionnaire was distributed to the European countries through their national scientific and professional radiotherapy societies with 30 items relating to the availability of guidelines for equipment and staffing and selected operational issues. Twenty-nine countries provided full or partial evaluable responses. Results: The availability of guidelines across Europe is far from uniform. The metrics used for capital and human resources are variable. There seem to have been no major changes in the availability or specifics of guidelines over the ten-year period since the QUARTS study with the exception of the recent expansion of RTT staffing models. Where comparison is possible it appears that staffing for radiation oncologists, medical physicists and particularly RTTs tend to exceed guidelines suggesting developments in clinical radiotherapy are moving faster than guideline updating. Conclusion: The efficient provision of safe, high quality radiotherapy services would benefit from the availability of well-structured guidelines for capital and human resources, based on agreed upon metrics, which could be linked to detailed estimates of need

  13. Sexual Success after Stress? Imidacloprid-Induced Hormesis in Males of the Neotropical Stink Bug Euschistus heros.

    Khalid Haddi

    Full Text Available Environmental stress in newly-emerged adult insects can have dramatic consequences on their life traits (e.g., dispersion, survival and reproduction as adults. For instance, insects sublethally exposed to environmental stressors (e.g., insecticides can gain fitness benefits as a result of hormesis (i.e., benefits of low doses of compounds that would be toxic at higher doses. Here, we experimentally tested whether sublethal exposure to the insecticide imidacloprid would hormetically affect the sexual fitness of newly-emerged adults of the Neotropical brown stink bug Euschistus heros (Hemiptera: Heteroptera: Pentatomidae, which is the most abundant and prevalent insect pest in Neotropical soybean fields. We evaluated the sexual fitness of four couple combinations: unexposed couples, exposed females, exposed males, and exposed couples. Sublethal exposure to dry residues (i.e., contact of imidacloprid (at 1% of recommended field rate did not affect insect survival, but led to higher mating frequencies when at least one member of the couple was exposed. However, the average mating duration was shortened when only females were exposed to imidacloprid. Moreover, exposed males showed higher locomotory (walking activity, lower respiration rates and induced higher fecundity rates when mated to unexposed females. Although the reproductive tracts of exposed males did not differ morphometrically from unexposed males, their accessory glands exhibited positive reactions for acidic and basic contents. Our findings suggest that males of the Neotropical brown stink bug hormetically increase their sexual fitness when cued by impending insecticidal stress in early adulthood.

  14. Medical history for the masses: how American comic books celebrated heroes of medicine in the 1940s.

    Hansen, Bert

    2004-01-01

    When comic books rose to mass popularity in the early 1940s, one segment of the industry specialized in "true adventures," with stories about real people from the past and the present--in contrast to competing books that offered fantasy, science fiction, superheroes, detectives and crime, funny people, or funny animals. This study examines the figures from both medical history and twentieth-century medicine who were portrayed as heroes and role models in these comic books: first, to call attention to this very popular, if unknown, genre of medical history, and second, to illustrate how medical history was used at that time to popularize scientific and medical ideas, to celebrate the achievements of medical research, to encourage medical science as a career choice, and to show medicine as a humane and noble enterprise. The study explains how these medical history stories were situated in American popular culture more generally, and how the graphic power of comic books successfully conveyed both values and information while also telling a good story. Attention to this colorful genre of popular medical history enriches our picture of the mid-twentieth-century public's enthusiasm for medical progress.

  15. FBR type reactor

    Kimura, Kimitaka; Fukuie, Ken; Iijima, Tooru; Shimpo, Masakazu.

    1994-01-01

    In an FBR type reactor for exchanging fuels by pulling up reactor core upper mechanisms, a connection mechanism is disposed for connecting the top of the reactor core and the lower end of the reactor core upper mechanisms. In addition, a cylindrical body is disposed surrounding the reactor core upper mechanisms, and a support member is disposed to the cylindrical body for supporting an intermediate portion of the reactor core upper mechanisms. Then, the lower end of the reactor core upper mechanisms is connected to the top of the reactor core. Same displacements are caused to both of them upon occurrence of earthquakes and, as a result, it is possible to eliminate mutual horizontal displacement between a control rod guide hole of the reactor core upper mechanisms and a control rod insertion hole of the reactor core. In addition, since the intermediate portion of the reactor core upper mechanisms is supported by the support member disposed to the cylindrical body surrounding the reactor core upper mechanisms, deformation caused to the lower end of the reactor core upper mechanisms is reduced, so that the mutual horizontal displacement with respect to the control rod insertion hole of the reactor core can be reduced. As a result, performance of control rod insertion upon occurrence of the earthquakes is improved, so that reactor shutdown is conducted more reliably to improve reactor safety. (N.H.)

  16. The prototype fast reactor

    Broomfield, A.M.

    1985-01-01

    The paper concerns the Prototype Fast Reactor (PFR), which is a liquid metal cooled fast reactor power station, situated at Dounreay, Scotland. The principal design features of a Fast Reactor and the PFR are given, along with key points of operating history, and health and safety features. The role of the PFR in the development programme for commercial reactors is discussed. (U.K.)

  17. Department of reactor technology

    1980-01-01

    The activities of the Department of Reactor Technology at Risoe during 1979 are described. The work is presented in five chapters: Reactor Engineering, Reactor Physics and Dynamics, Heat Transfer and Hydraulics, The DR 1 Reactor, and Non-Nuclear Activities. A list of the staff and of publications is included. (author)

  18. NCSU Reactor Sharing Program

    Perez, P.B.

    1993-01-01

    The Nuclear Reactor Program at North Carolina State University provides the PULSTAR Research Reactor and associated facilities to eligible institutions with support, in part, from the Department of Energy Reactor Sharing Program. Participation in the NCSU Reactor Sharing Program continues to increase steadily with visitors ranging from advance high school physics and chemistry students to Ph.D. level research from neighboring universities

  19. Reactor safety method

    Vachon, L.J.

    1980-01-01

    This invention relates to safety means for preventing a gas cooled nuclear reactor from attaining criticality prior to start up in the event the reactor core is immersed in hydrogenous liquid. This is accomplished by coating the inside surface of the reactor coolant channels with a neutral absorbing material that will vaporize at the reactor's operating temperature

  20. Physics of nuclear reactors

    Baeten, Peter

    2006-01-01

    This course gives an introduction to Nuclear Reactor Physics. The first chapter explains the most important parameters and concepts in nuclear reactor physics such as fission, cross sections and the effective multiplication factor. Further on, in the second chapter, the flux distributions in a stationary reactor are derived from the diffusion equation. Reactor kinetics, reactor control and reactor dynamics (feedback effects) are described in the following three chapters. The course concludes with a short description of the different types of existing and future reactors. (author)

  1. Reactor core and initially loaded reactor core of nuclear reactor

    Koyama, Jun-ichi; Aoyama, Motoo.

    1989-01-01

    In BWR type reactors, improvement for the reactor shutdown margin is an important characteristic condition togehter with power distribution flattening . However, in the reactor core at high burnup degree, the reactor shutdown margin is different depending on the radial position of the reactor core. That is , the reactor shutdown margin is smaller in the outer peripheral region than in the central region of the reactor core. In view of the above, the reactor core is divided radially into a central region and as outer region. The amount of fissionable material of first fuel assemblies newly loaded in the outer region is made less than the amount of the fissionable material of second fuel assemblies newly loaded in the central region, to thereby improve the reactor shutdown margin in the outer region. Further, the ratio between the amount of the fissionable material in the upper region and that of the fissionable material in the lower portion of the first fuel assemblies is made smaller than the ratio between the amount of the fissionable material in the upper region and that of the fissionable material in the lower region of the second fuel assemblies, to thereby obtain a sufficient thermal margin in the central region. (K.M.)

  2. Nuclear reactors. Introduction

    Boiron, P.

    1997-01-01

    This paper is an introduction to the 'nuclear reactors' volume of the Engineers Techniques collection. It gives a general presentation of the different articles of the volume which deal with: the physical basis (neutron physics and ionizing radiations-matter interactions, neutron moderation and diffusion), the basic concepts and functioning of nuclear reactors (possible fuel-moderator-coolant-structure combinations, research and materials testing reactors, reactors theory and neutron characteristics, neutron calculations for reactor cores, thermo-hydraulics, fluid-structure interactions and thermomechanical behaviour of fuels in PWRs and fast breeder reactors, thermal and mechanical effects on reactors structure), the industrial reactors (light water, pressurized water, boiling water, graphite moderated, fast breeder, high temperature and heavy water reactors), and the technology of PWRs (conceiving and building rules, nuclear parks and safety, reactor components and site selection). (J.S.)

  3. Thermonuclear reactor

    Yasutomi, Yoshiyuki; Nakagawa, Moroo; Sawai, Yuichi; Chiba, Akio; Suzuki, Yasutaka.

    1997-01-01

    Silicon composited with reinforcing metals is used for a divertor cooling substrate having an effect as a cooling tube to provide a silicon base composite material having increased electric resistance and toughness. The blending ratio of reinforcing materials in the form of granules, whiskers or long fibers is controlled in order to control heat conductivity, electric resistivity and mechanical performances. The divertor cooling substrate comprising the silicon base composite material is integrated with a plasma facing material. The production method therefor includes ordinary metal matrix composite forming methods such as powder metallurgy, melting penetration method, high pressure solidification casting method, centrifugal casting method and vacuum casting method. Since the cooling plate is constituted with the light metal and highly electric resistant metal base composite material, sharing force due to eddy current can be reduced, and radiation exposure can be minimized. Accordingly, a cooling structure for a thermonuclear reactor effective for the improvement of environmental problems caused by waste disposal can be attained. (N.H.)

  4. Nuclear reactor

    Irion, L.; Tautz, J.; Ulrych, G.

    1976-01-01

    This additional patent complements the arrangement of non-return valves to prevent loss of cooling water on fracture of external tubes in the main coolant circuit (according to PS 24 24 427.7) by ensuring that the easily movable valves only operate in case of a fault, but do not flutter in operation, because the direction of flow is not the same at each location where they are installed. The remedy for this undesirable effect consists of allocating 1 non-return valve unit with 5 to 10 valves to each (of several) ducts for the cooling water intake. These units are installed in the annular space between the reactor vessel and the pressure vessel below the inlet of the ducts. Due to flow guidance surfaces in the same space, the incoming cooling water is deflected downwards and as the guiding surfaces are closed at the sides, must pass parallel to the valves of the non-return valve unit. On fracture of the external cooling water inlet pipe concerned, all valves of this unit close due to reversal of flow on the outlet side. (TK) [de

  5. Nuclear reactors

    Pearson, K.G.

    1977-01-01

    Reference is made to auxiliary means of cooling the nuclear fuel clusters used in light or heavy water cooled nuclear reactors. One method is to provide one or more spray cooling tubes. From holes in the side walls of those tubes coolant water may be sprayed laterally into the cluster against the rods. The flow of main coolant may thus be supplemented or even replaced by the auxiliary coolant. A difficulty, however, is that only those fuel rods close to a spray cooling tube can readily be reached by the auxiliary coolant. In the arrangement described, where the fuel rods are spaced apart by transverse grids, at least one of the interspaces between the grids is provided with an axially extending auxiliary coolant conduit having lateral holes through which an auxiliary coolant is sprayed into the cluster. A deflector is provided that extends from a transverse grid into a position in front of the holes and deflects auxiliary coolant on to parts of the fuel rods otherwise inaccessible to the auxiliary coolant. The construction of the deflector is described. (U.K.)

  6. Nuclear reactor coolant channels

    Macbeth, R.V.

    1978-01-01

    A nuclear reactor coolant channel is described that is suitable for sub-cooled reactors as in pressurised water reactors as well as for bulk boiling, as in boiling water reactors and steam generating nuclear reactors. The arrangement aims to improve heat transfer between the fuel elements and the coolant. Full constructional details are given. See also other similar patents by the author. (U.K.)

  7. Fast breeder reactors

    Heinzel, V.

    1975-01-01

    The author gives a survey of 'fast breeder reactors'. In detail the process of breeding, the reasons for the development of fast breeders, the possible breeder reactors, the design criteria, fuels, cladding, coolant, and safety aspects are reported on. Design data of some experimental reactors already in operation are summarized in stabular form. 300 MWe Prototype-Reactors SNR-300 and PFR are explained in detail and data of KWU helium-cooled fast breeder reactors are given. (HR) [de

  8. Reactor Physics Training

    Baeten, P.

    2007-01-01

    University courses in nuclear reactor physics at the universities consist of a theoretical description of the physics and technology of nuclear reactors. In order to demonstrate the basic concepts in reactor physics, training exercises in nuclear reactor installations are also desirable. Since the number of reactor facilities is however strongly decreasing in Europe, it becomes difficult to offer to students a means for demonstrating the basic concepts in reactor physics by performing training exercises in nuclear installations. Universities do not generally possess the capabilities for performing training exercises. Therefore, SCK-CEN offers universities the possibility to perform (on a commercial basis) training exercises at its infrastructure consisting of two research reactors (BR1 and VENUS). Besides the organisation of training exercises in the framework of university courses, SCK-CEN also organizes theoretical courses in reactor physics for the education and training of nuclear reactor operators. It is indeed a very important subject to guarantee the safe operation of present and future nuclear reactors. In this framework, an understanding of the fundamental principles of nuclear reactor physics is also necessary for reactor operators. Therefore, the organisation of a basic Nuclear reactor physics course at the level of reactor operators in the initial and continuous training of reactor operators has proven to be indispensable. In most countries, such training also results from the direct request from the safety authorities to assure the high level of competence of the staff in nuclear reactors. The objectives this activity are: (1) to provide training and education activities in reactor physics for university students and (2) to organise courses in nuclear reactor physics for reactor operators

  9. Prevalence of comorbidities and baseline characteristics of LAP-BAND AP® subjects in the Helping Evaluate Reduction in Obesity (HERO study.

    Nancy Dreyer

    Full Text Available OBJECTIVE: To describe the baseline characteristics in patients who chose placement of a LAP-BAND AP® System (LBAP and participated in the Helping Evaluate Reduction in Obesity (HERO Study across regions. PATIENTS AND METHODS: HERO is a five-year, prospective, multicenter, international study of patients with LBAP placement between July 22, 2009 and January 31, 2011. In addition to baseline and peri-surgery clinical data, seven follow up visits are scheduled at 3, 6 and 12 months, and annually through year five. Data collection included family and medical history, clinical outcomes, laboratory data, health-related quality of life (HRQoL, productivity, healthcare resource utilization, and adverse events. RESULTS: LBAP were placed in 1106 enrolled patients; 56.6% from the US, 26.3% from Europe, 7.1% from Canada, and 10.0% from Australia. The majority were female (n = 877 (79.3% with a mean age of 43 years (s.d. = 11.4 and mean body mass index of 45.1 kg/m(2 (s.d. = 6.9. The most common comorbidities were hypertension (HTN (overall  = 42.9% and diabetes (overall 22.2%, with 27% from the US and 14% from Europe. Overall, less than 5% had a history of cardiovascular disease. The prevalence rates of HTN, diabetes and cardiovascular disease were significantly (p<0.001 higher in men than in women across all regions. Overall HRQoL also worsened with increasing BMI. CONCLUSIONS: The HERO study is the first large, multinational and long-term registry with the LBAP. This study will provide real-world outcomes data on LAGB that will help inform patient choice, clinician treatment strategies, and payer reimbursement decisions.

  10. The impact of cancer incidence and stage on optimal utilization of radiotherapy. Methodology of a population based analysis by the ESTRO-HERO project

    Borras, Josep M; Barton, Michael; Grau, Cai

    2015-01-01

    -HERO project. MATERIALS AND METHODS: Data from Australian Collaboration for Cancer Outcomes Research and Evaluation (CCORE) were used. Population based stages at diagnosis from the cancer registries of Belgium, Slovenia, the Greater Poland region of Poland, and The Netherlands were used to assess the OUP...... in stage at diagnosis across countries. The most important impact on the OUP by country was due to changes in relative frequency of tumours rather than stage at diagnosis. CONCLUSIONS: This methodology can be adapted using European data, thus facilitating the planning of resources required to cope...

  11. A reinvenção do heroísmo na contemporaneidade: a busca de uma estética relacional ativista

    Tania Alice Caplain Feix

    2013-01-01

    O artigo aborda as performances realizadas pelo Coletivo de performance carioca Heróis do Cotidiano, que investiga a possibilidade e as condições de surgimento e expansão do hero¬ísmo na Contemporaneidade. Pela criação de micro-utopias temporárias e locais, o Coletivo realiza uma apropriação do espaço público, dialogando com o conceito de Estética Relacional de Nicolas Bourriaud, estabelecendo novas formas de sociabilidade e estabelecendo proces¬sos de subjetivação diferentes daqueles propost...

  12. The Traces of “New Character” in Uzbek Short Story Heroes Based on Two Examples of Uzbek Short Stories of the Present Day

    Veli Savaş Yelok

    2014-12-01

    Full Text Available The era following the Uzbek independence resulted in a renaissance in Uzbek life. This process in which a renaissance was experienced, also affected the material and moral elements that shape their view of life. When this situation affected the way people understand life, this reform of the Uzbek people naturally formed “the new era”. This new era demanded new ways of thinking from those who lived in that era. The effect of this development and change on people’s minds and their way of understanding and thinkingand its description found itself in literary life. In the short stories published following the independence, the spirit of the time and the different fates of those people who lived in that era were reflected. As a result, writers created the heroes of today through the change experienced by people in their inner world who lived in the same era as the writers. As a general principle, creating a hero is seen as the first issue in the literature of every era. This is so because the hero in the work of literature is the tool that reflects the inner and outer world of the people of a specific era. All the nice and ugly things in a person’s life -starting from the person’s lifestyle and continuing to the end of his life- are passed onto the hero’s thoughts and actions. Describing the changes constantly observed in a hero’s character, reflecting these by forming a direct relationship with the era is comparatively easier in a short story when compared to other genres. In this article, information on the development of short story in present day Uzbek Literature is presented. In addition, the reflection of “the person of the new era” observed in the heroes in the stories “The Author” and “The Trick of Gumshoe Jacob” written by Erkin A‘zam and Xurshid Dostmuhammad who have gained the admiration of readers in their works following the independence is studied.

  13. The fast breeder reactor

    Collier, J.

    1990-01-01

    The arguments for and against the fast breeder reactor are debated. The case for the fast reactor is that the world energy demand will increase due to increasing population over the next forty years and that the damage to the global environment from burning fossil fuels which contribute to the greenhouse effect. Nuclear fission is the only large scale energy source which can achieve a cut in the use of carbon based fuels although energy conservation and renewable sources will also be important. Fast reactors produce more energy from uranium than other types of (thermal) reactors such as AGRs and PWRs. Fast reactors would be important from about 2020 onwards especially as by then many thermal reactors will need to be replaced. Fast reactors are also safer than normal reactors. The arguments against fast reactors are largely economic. The cost, especially the capital cost is very high. The viability of the technology is also questioned. (UK)

  14. Nuclear reactor instrumentation at research reactor renewal

    Baers, B.; Pellionisz, P.

    1981-10-01

    The paper overviews the state-of-the-art of research reactor renewals. As a case study the instrumentation reconstruction of the Finnish 250 kW TRIGA reactor is described, with particular emphasis on the nuclear control instrumentation and equipment which has been developed and manufactured by the Central Research Institute for Physics, Budapest. Beside the presentation of the nuclear instrument family developed primarily for research reactor reconstructions, the quality assurance policy conducted during the manufacturing process is also discussed. (author)

  15. Safeguarding research reactors

    Powers, J.A.

    1983-03-01

    The report is organized in four sections, including the introduction. The second section contains a discussion of the characteristics and attributes of research reactors important to safeguards. In this section, research reactors are described according to their power level, if greater than 25 thermal megawatts, or according to each fuel type. This descriptive discussion includes both reactor and reactor fuel information of a generic nature, according to the following categories. 1. Research reactors with more than 25 megawatts thermal power, 2. Plate fuelled reactors, 3. Assembly fuelled reactors. 4. Research reactors fuelled with individual rods. 5. Disk fuelled reactors, and 6. Research reactors fuelled with aqueous homogeneous fuel. The third section consists of a brief discussion of general IAEA safeguards as they apply to research reactors. This section is based on IAEA safeguards implementation documents and technical reports that are used to establish Agency-State agreements and facility attachments. The fourth and last section describes inspection activities at research reactors necessary to meet Agency objectives. The scope of the activities extends to both pre and post inspection as well as the on-site inspection and includes the examination of records and reports relative to reactor operation and to receipts, shipments and certain internal transfers, periodic verification of fresh fuel, spent fuel and core fuel, activities related to containment and surveillance, and other selected activities, depending on the reactor

  16. Guide to power reactors

    NONE

    1959-07-15

    The IAEA's major first scientific publication is the Directory of Power Reactors now in operation or under construction in various parts of the world. The purpose of the directory is to present important details of various power projects in such a way as to provide a source of easy reference for anyone interested in the development of the peaceful uses of atomic energy, either at the technical or management level. Six pages have been devoted to each reactor the first of which contains general information, reactor physics data and information about the core. The second and third contain sketches of the fuel element or of the fuel element assembly, and of the horizontal and vertical sections of the reactor. On the fourth page information is grouped under the following heads: fuel element, core heat transfer, control, reactor vessel and over-all dimensions, and fluid flow. The fifth page shows a simplified flow diagram, while the sixth provides information on reflector and shielding, containment and turbo generator. Some information has also been given, when available, on cost estimates and operating staff requirements. Remarks and a bibliography constitute the last part of the description of each reactor. Reactor projects included in this directory are pressurized light water cooled power reactors. Boiling light water cooled power reactors, heavy water cooled power reactors, gas cooled power reactors, organic cooled power reactors liquid metal cooled power reactors and liquid metal cooled power reactors

  17. Reactor core of FBR type reactor

    Hayashi, Hideyuki; Ichimiya, Masakazu.

    1994-01-01

    A reactor core is a homogeneous reactor core divided into two regions of an inner reactor core region at the center and an outer reactor core region surrounding the outside of the inner reactor core region. In this case, the inner reactor core region has a lower plutonium enrichment degree and less amount of neutron leakage in the radial direction, and the outer reactor core region has higher plutonium enrichment degree and greater amount of neutron leakage in the radial direction. Moderator materials containing hydrogen are added only to the inner reactor core fuels in the inner reactor core region. Pins loaded with the fuels with addition of the moderator materials are inserted at a ratio of from 3 to 10% of the total number of the fuel pins. The moderator materials containing hydrogen comprise zirconium hydride, titanium hydride, or calcium hydride. With such a constitution, fluctuation of the power distribution in the radial direction along with burning is suppressed. In addition, an absolute value of the Doppler coefficient can be increased, and a temperature coefficient of coolants can be reduced. (I.N.)

  18. Reactor core for LMFBR type reactors

    Masumi, Ryoji; Azekura, Kazuo; Kurihara, Kunitoshi; Bando, Masaru; Watari, Yoshio.

    1987-01-01

    Purpose: To reduce the power distribution fluctuations and obtain flat and stable power distribution throughout the operation period in an LMFBR type reactor. Constitution: In the inner reactor core region and the outer reactor core region surrounding the same, the thickness of the inner region is made smaller than the axial height of the reactor core region and the radial width thereof is made smaller than that of the reactor core region and the volume thereof is made to 30 - 50 % for the reactor core region. Further, the amount of the fuel material per unit volume in the inner region is made to 70 - 90 % of that in the outer region. The difference in the neutron infinite multiplication factor between the inner region and the outer region is substantially constant irrespective of the burnup degree and the power distribution fluctuation can be reduced to about 2/3, by which the effect of thermal striping to the reactor core upper mechanisms can be moderated. Further, the maximum linear power during operation can be reduced by 3 %, by which the thermal margin in the reactor core is increased and the reactor core fuels can be saved by 3 %. (Kamimura, M.)

  19. Tokamak reactor studies

    Baker, C.C.

    1981-01-01

    This paper presents an overview of tokamak reactor studies with particular attention to commercial reactor concepts developed within the last three years. Emphasis is placed on DT fueled reactors for electricity production. A brief history of tokamak reactor studies is presented. The STARFIRE, NUWMAK, and HFCTR studies are highlighted. Recent developments that have increased the commercial attractiveness of tokamak reactor designs are discussed. These developments include smaller plant sizes, higher first wall loadings, improved maintenance concepts, steady-state operation, non-divertor particle control, and improved reactor safety features

  20. Reactor Physics Programme

    De Raedt, C.

    2000-01-01

    The Reactor Physics and Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis on reactor fuel. This expertise is applied within the Reactor Physics and MYRRHA Research Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments. Progress and achievements in 1999 in the following areas are reported on: (1) investigations on the use of military plutonium in commercial power reactors; (2) neutron and gamma calculations performed for BR-2 and for other reactors; (3) the updating of neutron and gamma cross-section libraries; (4) the implementation of reactor codes; (6) the management of the UNIX workstations; and (6) fuel cycle studies

  1. Reactor Physics Programme

    De Raedt, C

    2000-07-01

    The Reactor Physics and Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis on reactor fuel. This expertise is applied within the Reactor Physics and MYRRHA Research Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments. Progress and achievements in 1999 in the following areas are reported on: (1) investigations on the use of military plutonium in commercial power reactors; (2) neutron and gamma calculations performed for BR-2 and for other reactors; (3) the updating of neutron and gamma cross-section libraries; (4) the implementation of reactor codes; (6) the management of the UNIX workstations; and (6) fuel cycle studies.

  2. Parasitismo e sítios de diapausa de adultos do percevejo marrom, Euschistus heros na região da Grande Dourados, MS Parasitism and diapause sites of brown stink bug adults, Euschistus heros in the Great Dourados Region, MS, Brazil

    Karlla Barbosa Godoy

    2010-05-01

    Full Text Available Entre os insetos que atacam a soja, o percevejo marrom Euschistus heros (Fabricius é considerado uma das principais pragas. Os objetivos deste trabalho foram avaliar a ocorrência de parasitismo em adultos do percevejo marrom E. hero, no período de cultivo da soja e de entressafra, e identificar seus sítios de diapausa no período de entressafra, na região da Grande Dourados, Mato Grosso do Sul (MS. Foram coletados adultos do percevejo em lavouras de soja, durante as safras 2004/05 e 2005/06, sendo as coletas realizadas semanalmente. No período de entressafra da soja de 2005 e 2006, foram realizadas inspeções em diferentes ambientes vegetais visando a constatar possíveis sítios de diapausa do percevejo, bem como avaliar a ocorrência de parasitismo nesses ambientes. Em cada coleta, foram individualizados 40 adultos em caixas gerbox contendo Ligustrum lucidum Ait. (Oleraceae, sendo os insetos observados durante um período de 40 dias. Os parasitoides foram armazenados em álcool 70% e encaminhados para identificação. O índice natural de parasitismo de adultos de E. heros amostrados no período de safra e de entressafra de soja variou de 0,0 a 5,0%, considerando-se as diferentes coletas realizadas, sendo Hexacladia smithii Ashmead (Hymenoptera: Encyrtidae a única espécie de parasitoide ocorrente. No período de entressafra, foi verificada maior incidência do percevejo E. heros em folhas secas de mangueira (Mangifera indica L. caídas no chão, evidenciando que esse ambiente é um importante sítio de diapausa para essa praga na região.Among the insects that attack soybeans, brown stink bug Euschistus heros (Fabricius is considered a major pest. The aim of this research was to evaluate the occurrence of parasitism in adults of brown stink bugs E. heros during soybean crop season and to identify diapause sites during the period of soybean absence in the great region of Dourados, MS. Adults of brown stick bugs were collected weekly in

  3. Undergraduate reactor control experiment

    Edwards, R.M.; Power, M.A.; Bryan, M.

    1992-01-01

    A sequence of reactor and related experiments has been a central element of a senior-level laboratory course at Pennsylvania State University (Penn State) for more than 20 yr. A new experiment has been developed where the students program and operate a computer controller that manipulates the speed of a secondary control rod to regulate TRIGA reactor power. Elementary feedback control theory is introduced to explain the experiment, which emphasizes the nonlinear aspect of reactor control where power level changes are equivalent to a change in control loop gain. Digital control of nuclear reactors has become more visible at Penn State with the replacement of the original analog-based TRIGA reactor control console with a modern computer-based digital control console. Several TRIGA reactor dynamics experiments, which comprise half of the three-credit laboratory course, lead to the control experiment finale: (a) digital simulation, (b) control rod calibration, (c) reactor pulsing, (d) reactivity oscillator, and (e) reactor noise

  4. Reactor System Design

    Chi, S. K.; Kim, G. K.; Yeo, J. W.

    2006-08-01

    SMART NPP(Nuclear Power Plant) has been developed for duel purpose, electricity generation and energy supply for seawater desalination. The objective of this project IS to design the reactor system of SMART pilot plant(SMART-P) which will be built and operated for the integrated technology verification of SMART. SMART-P is an integral reactor in which primary components of reactor coolant system are enclosed in single pressure vessel without connecting pipes. The major components installed within a vessel includes a core, twelve steam generator cassettes, a low-temperature self pressurizer, twelve control rod drives, and two main coolant pumps. SMART-P reactor system design was categorized to the reactor coe design, fluid system design, reactor mechanical design, major component design and MMIS design. Reactor safety -analysis and performance analysis were performed for developed SMART=P reactor system. Also, the preparation of safety analysis report, and the technical support for licensing acquisition are performed

  5. Fusion reactor design studies

    Emmert, G.A.; Kulcinski, G.L.; Santarius, J.F.

    1990-01-01

    This report discusses the following topics on the ARIES tokamak: systems; plasma power balance; impurity control and fusion ash removal; fusion product ripple loss; energy conversion; reactor fueling; first wall design; shield design; reactor safety; and fuel cost and resources

  6. Nuclear reactors; graphical symbols

    1987-11-01

    This standard contains graphical symbols that reveal the type of nuclear reactor and is used to design graphical and technical presentations. Distinguishing features for nuclear reactors are laid down in graphical symbols. (orig.) [de

  7. Control for nuclear reactor

    Ash, E.B.; Bernath, L.; Facha, J.V.

    1980-01-01

    A nuclear reactor is provided with several hydraulically-supported spherical bodies having a high neutron absorption cross section, which fall by gravity into the core region of the reactor when the flow of supporting fluid is shut off. (auth)

  8. Hybrid plasmachemical reactor

    Lelevkin, V. M., E-mail: lelevkin44@mail.ru; Smirnova, Yu. G.; Tokarev, A. V. [Kyrgyz-Russian Slavic University (Kyrgyzstan)

    2015-04-15

    A hybrid plasmachemical reactor on the basis of a dielectric barrier discharge in a transformer is developed. The characteristics of the reactor as functions of the dielectric barrier discharge parameters are determined.

  9. Ship propulsion reactors technology

    Fribourg, Ch.

    2002-01-01

    This paper takes the state of the art on ship propulsion reactors technology. The french research programs with the corresponding technological stakes, the reactors specifications and advantages are detailed. (A.L.B.)

  10. Guidebook to nuclear reactors

    Nero, A.V. Jr.

    1976-05-01

    A general introduction to reactor physics and theory is followed by descriptions of commercial nuclear reactor types. Future directions for nuclear power are also discussed. The technical level of the material is suitable for laymen

  11. continuous stirred tank reactor (CSTR)

    AFRICAN JOURNALS ONLINE (AJOL) · Journals · Advanced Search ... stirred tank reactor (CSTR) and the small and large intestines as plug flow reactor (PFR) ... from the two equations are used for the reactor sizing of the modeled reactors.

  12. Patrones de consumo de heroína en una cárcel de la frontera norte de México: barreras de acceso a tratamiento

    Cravioto Patricia

    2003-01-01

    Full Text Available OBJETIVO: Describir la prevalencia del consumo de heroína, los patrones de inicio, el alto consumo y la dependencia a esta sustancia e identificar barreras que impidan a los adictos acudir a tratamiento. MATERIAL Y MÉTODOS: El estudio se realizó en la cárcel de Ciudad Juárez, Chihuahua, México, entre abril y junio de 2000; los participantes se obtuvieron a través de un muestreo aleatorio simple, partiendo del censo del penal. Se identificaron las barreras al tratamiento, estimadas mediante un modelo de regresión logística. RESULTADOS: La prevalencia de consumo de heroína en los últimos seis meses fue de 26.4%; de 25.3% para usuarios fuertes; 95% fueron dependientes. El promedio de la edad de inicio del consumo fue a los 21 años. El modelo multivariado mostró que baja escolaridad, abstinencia, sobredosis, enfermedades crónicas y tiempo de exposición son barreras que impiden solicitar tratamiento. CONCLUSIONES: Las implicaciones de los resultados se discuten en función de aplicarlos para implantar programas de tratamiento en las cárceles.

  13. New Age Fairy Tales: The Abject Female Hero in El laberinto del fauno and La rebelión de los conejos mágicos

    Patricia Lapolla Swier

    2011-11-01

    Full Text Available In totalitarian regimes, the Other is marginalized, prosecuted, and often eliminated from the national spectrum. While Spain is just beginning to confront the violations of the post-Civil War era, the nations of the Latin American Southern Cone have continued to struggle with the trauma and memory related to the violence perpetrated by the dictatorship. Through a psychoanalytic reading based on Julia Kristeva's theories of the abject and Joseph Campbell's investigations of myth within the hero's journey, I show how the young female heroes of El laberinto del fauno (Pan's Labyrinth and La rebelión de los conejos mágicos (The Rabbits' Rebellion embark upon a journey of personal self-discovery and self-transcendence in the marginal space of the abject, and how, by doing so, they release the repressed stories of the victims of these dictatorships. Through their journeys in these fairy-tale settings emerges a transformation of consciousness that provides more comprehensive readings of history at the universal level.

  14. Haemophilia Experiences, Results and Opportunities (HERO) Study: influence of haemophilia on interpersonal relationships as reported by adults with haemophilia and parents of children with haemophilia.

    Cassis, F R M Y; Buzzi, A; Forsyth, A; Gregory, M; Nugent, D; Garrido, C; Pilgaard, T; Cooper, D L; Iorio, A

    2014-07-01

    Evidence delineating the effects of haemophilia on interpersonal relationships is sparse and largely outdated, failing to reflect the impact of current treatment strategies. HERO (Haemophilia Experiences, Results and Opportunities) was commenced to garner a more comprehensive understanding of psychosocial issues facing persons with haemophilia (PWH). This article describes the findings of the quantitative HERO survey relating to the influence of haemophilia on interpersonal relationships of adult PWH, and parents/caregivers of children with haemophilia. Separate questionnaires were completed by adult PWH and parents of minor children from 10 countries, including satisfaction with support from partners, family, friends and other social contacts; disclosure of haemophilia and carrier status and family dynamics. A total of 675 PWH and 561 parents completed the survey. Over half of PWH (57%) and parents (84%) were married. Most PWH were satisfied with support from partners (94%), family (90%) and friends (85%), with lower percentages reported among those with inhibitors. Most parents were likewise satisfied with support from partners (88%) and family (83%). Whereas PWH were reticent to disclose their diagnosis beyond family and friends, parents were more likely to share their son's diagnosis, and most were satisfied with the support from their son's peers (74%), teachers (83%) and other adults in supervisory roles (85%). PWH and parents surveyed were satisfied overall with the support they received from partners, family, friends and social contacts. Relationships are affected by haemophilia in various ways, and particularly affected in terms of disease burden, age and social life. © 2014 John Wiley & Sons Ltd.

  15. A professora-heroína no filme Verônica: endereçamento, identificação e conformismo social

    Dostoiewski Mariatt de Oliveira Champangnatte

    2016-12-01

    Full Text Available Este artigo realiza uma análise do filme Verônica, de 2009, que apresenta uma professora da rede pública do Rio de Janeiro como heroína. A partir da análise crítica do discurso, proposta por Fairclough (2001, e aplicada a filmes neste trabalho, abordam-se as caracterizações da professora e do enredo do filme, com o objetivo de discutir questões relacionadas a estratégias de endereçamento e identificação voltadas a professores-espectadores. Como também de relacionar tais estratégias às práticas sociais do produtor e dos patrocinadores da obra. A partir da análise realizada, observou-se que o conformismo social foi um dos principais valores a ser endereçado/identificado aos/pelos professores-espectadores, tal como a reiteração de práticas negativas relativas à docência. Concluindo-se, ao final, que o heroísmo da professora nada tem a ver com a escola ou a educação.

  16. Reactor physics aspects of CANDU reactors

    Critoph, E.

    1980-01-01

    These four lectures are being given at the Winter Course on Nuclear Physics at Trieste during 1978 February. They constitute part of the third week's lectures in Part II: Reactor Theory and Power Reactors. A physical description of CANDU reactors is given, followed by an overview of CANDU characteristics and some of the design options. Basic lattice physics is discussed in terms of zero energy lattice experiments, irradiation effects and analytical methods. Start-up and commissioning experiments in CANDU reactors are reviewed, and some of the more interesting aspects of operation discussed - fuel management, flux mapping and control of the power distribution. Finally, some of the characteristics of advanced fuel cycles that have been proposed for CANDU reactors are summarized. (author)

  17. Molten salt breeder reactor

    1977-01-01

    MSBR Study Group formed in October 1974 has studied molten salt breeder reactor and its various aspects. Usage of a molten salt fuel, extremely interesting as reactor chemistry, is a great feature to MSBR; there is no need for separate fuel making, reprocessing, waste storage facilities. The group studied the following, and these results are presented: molten salt technology, molten salt fuel chemistry and reprocessing, reactor characteristics, economy, reactor structural materials, etc. (Mori, K.)

  18. Zero energy reactor 'RB'

    Popovic, D; Takac, S; Markovic, H; Raisic, N; Zdravkovic, Z; Radanovic, Lj [Boris Kidric Institute of Nuclear Sciences, Vinca, Beograd (Yugoslavia)

    1959-03-15

    In 1958 the zero energy reactor RB was built with the purpose of enabling critical experiments with various reactor systems to be carried out. The first core assembly built in this reactor consists of heavy water as moderator and natural uranium metal as fuel. In order to be able to obtain very accurate results when measuring the main characteristics of the assembly the reactor was built as a completely bare system. (author)

  19. Reactor utilization, Annex A

    Martinc, R.; Stanic, A.

    1984-01-01

    Reactor was operated until August 1984 due to prohibition issued by the Ministry since the reactor does not have the emergency cooling system nor special filters in the ventilation system yet. This means that the operation plan was fulfilled by 69%. This annex includes detailed tables containing data about utilization of reactor experimental channels, irradiated samples, as well as interruptions of operation. Detailed data about reactor power during this period are shown as well

  20. PUSPATI TRIGA Reactor

    Masood, Z.

    2016-01-01

    The PUSPATI TRIGA Reactor is the only research reactor in Malaysia. This 1 MW TRIGA Mk II reactor first reached criticality on 28 June 1982 and is located at the Malaysian Nuclear Agency premise in Bangi, Malaysia. This reactor has been mainly utilised for research, training and education and isotope production. Over the years several systems have been refurbished or modernised to overcome ageing and obsolescence problems. Major achievements and milestones will also be elaborated in this paper. (author)

  1. Nuclear reactor shutdown system

    Mangus, J.D.; Cooper, M.H.

    1982-01-01

    An improved nuclear reactor shutdown system is described comprising a temperature sensitive device connected to control the electric power supply to a magnetic latch holding a body of a neutron absorbing material. The temperature sensitive device is exposed to the reactor coolant so that when the reactor coolant temperature rises above a specific level, the temperature sensitive device will cause deenergization of the magnetic latch to allow the body of neutron absorbing material to enter the reactor core. (author)

  2. The fast reactor

    1980-02-01

    The subject is discussed as follows: brief description of fast reactors; advantage in conserving uranium resources; experience, in UK and elsewhere, in fast reactor design, construction and operation; safety; production of plutonium, security aspects; consideration of future UK fast reactor programme. (U.K.)

  3. Mirror fusion reactor design

    Neef, W.S. Jr.; Carlson, G.A.

    1979-01-01

    Recent conceptual reactor designs based on mirror confinement are described. Four components of mirror reactors for which materials considerations and structural mechanics analysis must play an important role in successful design are discussed. The reactor components are: (a) first-wall and thermal conversion blanket, (b) superconducting magnets and their force restraining structure, (c) neutral beam injectors, and (d) plasma direct energy converters

  4. Towards nuclear fusion reactors

    1993-11-01

    The results of nuclear fusion researches in JAERI are summarized. In this report, following themes are collected: the concept of fusion reactor (including ITER), fusion reactor safety, plasma confinement, fusion reactor equipment, and so on. Includes glossary. (J.P.N.)

  5. Rotating reactors : a review

    Visscher, F.; Schaaf, van der J.; Nijhuis, T.A.; Schouten, J.C.

    2013-01-01

    This review-perspective paper describes the current state-of-the-art in the field of rotating reactors. The paper has a focus on rotating reactor technology with applications at lab scale, pilot scale and industrial scale. Rotating reactors are classified and discussed according to their geometry:

  6. Refuelling nuclear reactors

    Stacey, J.; Webb, J.; White, W.P.; McLaren, N.H.

    1981-01-01

    An improved nuclear reactor refuelling machine is described which can be left in the reactor vault to reduce the off-load refuelling time for the reactor. The system comprises a gripper device rangeable within a tubular chute, the gripper device being movable by a pantograph. (U.K.)

  7. Reactor power measuring device

    Izumi, Mikio; Sano, Yuji; Seki, Eiji; Yoshida, Toshifumi; Ito, Toshiaki.

    1993-01-01

    The present invention provides a self-powered long detector having a sensitivity over the entire length of a reactor core as an entire control rod withdrawal range of a BWR type reactor, and a reactor power measuring device using a gamma ray thermometer which scarcely causes sensitivity degradation. That is, a hollow protection pipe is disposed passing through the reactor core from the outside of a reactor pressure vessel. The self-powered long detectors and the gamma ray thermometers are inserted and installed in the protection pipe. An average reactor power in an axial direction of the reactor relative to a certain position in the horizontal cross section of the reactor core is determined based on the power of the self-powered long detector over the entire length of the reactor core. Since the response of the self-powered detector relative to a local power change is rapid, the output is used as an input signal to a safety protection device of the reactor core. Further, a gamma ray thermometer secured in the reactor and having scarce sensitivity degradation is used instead of an incore travelling neutron monitor used for relative calibration of an existent neutron monitor secured in the reactor. (I.S.)

  8. Ulysse, mentor reactor

    Bouquin, B.; Rio, I.; Safieh, J.

    1997-01-01

    On July 23, 1961, the ULYSSE reactor began its first power rise. Designed at that time to train nuclear engineering students and reactor operators, this reactor still remains an indispensable tool for nuclear teaching and a choice instrument for scientists. (author)

  9. Mechanical spectral shift reactor

    Sherwood, D.G.; Wilson, J.F.; Salton, R.B.; Fensterer, H.F.

    1981-01-01

    A mechanical spectral shift reactor comprises apparatus for inserting and withdrawing water displacer elements from the reactor core for selectively changing the water-moderator volume in the core thereby changing the reactivity of the core. The apparatus includes drivemechanisms for moving the displacer elements relative to the core and guide mechanisms for guiding the displayer rods through the reactor vessel

  10. Mechanical spectral shift reactor

    Sherwood, D.G.; Wilson, J.F.; Salton, R.B.; Fensterer, H.F.

    1982-01-01

    A mechanical spectral shift reactor comprises apparatus for inserting and withdrawing water displacer elements from the reactor core for selectively changing the water-moderator volume in the core thereby changing the reactivity of the core. The apparatus includes drive mechanisms for moving the displacer elements relative to the core and guide mechanisms for guiding the displacer rods through the reactor vessel. (author)

  11. Neutron behavior, reactor control, and reactor heat transfer. Volume four

    Anon.

    1986-01-01

    Volume four covers neutron behavior (neutron absorption, how big are nuclei, neutron slowing down, neutron losses, the self-sustaining reactor), reactor control (what is controlled in a reactor, controlling neutron population, is it easy to control a reactor, range of reactor control, what happens when the fuel burns up, controlling a PWR, controlling a BWR, inherent safety of reactors), and reactor heat transfer (heat generation in a nuclear reactor, how is heat removed from a reactor core, heat transfer rate, heat transfer properties of the reactor coolant)

  12. Reactor as furnace and reactor as lamp

    Goldanskii, V.I.

    1992-01-01

    There are presented general characteristics of the following ways of transforming of nuclear energy released in reactors into chemical : ordinary way (i.e. trough the heat, mechanical energy and electricity); chemonuclear synthesis ; use of high-temperature fuel elements (reactor as furnace); use of the mixed nγ-radiation of reactors; use of the radiation loops; radiation - photochemical synthesis (reactor as lamp). Advantage and disadvantages of all above variants are compared. The yield of the primary product of fixation of nitrogen (nitric oxide NO) in reactor with the high-temperature (above ca. 1900degC) fuel elements (reactor-furnace) can exceed W ∼ 200 kg per gram of burned uranium. For the latter variant (reactor-lamp) the yield of chemical products can reach W ∼ 60 kg. per gram of uranium. Such values of W are close to or even strongly exceed the yields of chemical products for other abovementioned variants and - what is particularly important - are not connected to the necessity of archscrupulous removal of radioactive contamination of products. (author)

  13. Nuclear reactor physics

    Stacey, Weston M

    2010-01-01

    Nuclear reactor physics is the core discipline of nuclear engineering. Nuclear reactors now account for a significant portion of the electrical power generated worldwide, and new power reactors with improved fuel cycles are being developed. At the same time, the past few decades have seen an ever-increasing number of industrial, medical, military, and research applications for nuclear reactors. The second edition of this successful comprehensive textbook and reference on basic and advanced nuclear reactor physics has been completely updated, revised and enlarged to include the latest developme

  14. Light water reactor safety

    Pershagen, B

    2013-01-01

    This book describes the principles and practices of reactor safety as applied to the design, regulation and operation of light water reactors, combining a historical approach with an up-to-date account of the safety, technology and operating experience of both pressurized water reactors and boiling water reactors. The introductory chapters set out the basic facts upon which the safety of light water reactors depend. The central section is devoted to the methods and results of safety analysis. The accidents at Three Mile Island and Chernobyl are reviewed and their implications for light wate

  15. Fundamentals of reactor chemistry

    Akatsu, Eiko

    1981-12-01

    In the Nuclear Engineering School of JAERI, many courses are presented for the people working in and around the nuclear reactors. The curricula of the courses contain also the subject material of chemistry. With reference to the foreign curricula, a plan of educational subject material of chemistry in the Nuclear Engineering School of JAERI was considered, and the fundamental part of reactor chemistry was reviewed in this report. Since the students of the Nuclear Engineering School are not chemists, the knowledge necessary in and around the nuclear reactors was emphasized in order to familiarize the students with the reactor chemistry. The teaching experience of the fundamentals of reactor chemistry is also given. (author)

  16. Generation III+ Reactor Portfolio

    2010-03-01

    While the power generation needs of utilities are unique and diverse, they are all faced with the double challenge of meeting growing electricity needs while curbing CO 2 emissions. To answer these diverse needs and help tackle this challenge, AREVA has developed several reactor models which are briefly described in this document: The EPR TM Reactor: designed on the basis of the Konvoi (Germany) and N4 (France) reactors, the EPRTM reactor is an evolutionary model designed to achieve best-in-class safety and operational performance levels. The ATMEA1 TM reactor: jointly designed by Mitsubishi Heavy Industries and AREVA through ATMEA, their common company. This reactor design benefits from the competencies and expertise of the two mother companies, which have commissioned close to 130 reactor units. The KERENA TM reactor: Designed on the basis of the most recent German BWR reactors (Gundremmingen) the KERENA TM reactor relies on proven technology while also including innovative, yet thoroughly tested, features. The optimal combination of active and passive safety systems for a boiling water reactor achieves a very low probability of severe accident

  17. The fast breeder reactor

    Davis, D.A.; Baker, M.A.W.; Hall, R.S.

    1990-01-01

    Following submission of written evidence, the Energy Committee members asked questions of three witnesses from the Central Electricity Generating Board and Nuclear Electric (which will be the government owned company running nuclear power stations after privatisation). Both questions and answers are reported verbatim. The points raised include where the responsibility for the future fast reactor programme should lie, with government only or with private enterprise or both and the viability of fast breeder reactors in the future. The case for the fast reactor was stated as essentially strategic not economic. This raised the issue of nuclear cost which has both a construction and a decommissioning element. There was considerable discussion as to the cost of building a European Fast reactor and the cost of the electricity it would generate compared with PWR type reactors. The likely demand for fast reactors will not arrive for 20-30 years and the need to build a fast reactor now is questioned. (UK)

  18. One piece reactor removal

    Chia, Wei-Min; Wang, Song-Feng

    1993-01-01

    The strategy of Taiwan Research Reactor Renewal plan is to remove the old reactor block with One Piece Reactor Removal (OPRR) method for installing a new research reactor in original building. In this paper, the engineering design of each transportation works including the work method, the major equipments, the design policy and design criteria is described and discussed. In addition, to ensure the reactor block is safety transported for storage and to guarantee the integrity of reactor base mat is maintained for new reactor, operation safety is drawn special attention, particularly under seismic condition, to warrant safe operation of OPRR. ALARA principle and Below Regulatory Concern (BRC) practice were also incorporated in the planning to minimize the collective dose and the total amount of radioactive wastes. All these activities are introduced in this paper. (J.P.N.)

  19. Reactor power control device

    Ishii, Yoshihiko; Arita, Setsuo; Miyamoto, Yoshiyuki; Fukazawa, Yukihisa; Ishii, Kazuhiko

    1998-01-01

    The present invention provides a reactor power control device capable of enhancing an operation efficiency while keeping high reliability and safety in a BWR type nuclear power plant. Namely, the device of the present invention comprises (1) a means for inputting a set value of a generator power and a set value of a reactor power, (2) a means for controlling the reactor power to either smaller one of the reactor power corresponding to the set value of the generator power and the set value of the reactor power. With such procedures, even if the nuclear power plant is set so as to operate it to make the reactor power 100%, when the generator power reaches the upper limit, the reactor power is controlled with a preference given to the upper limit value of the generator power. Accordingly, safety and reliability are not deteriorated. The operation efficiency of the plant can be improved. (I.S.)

  20. Reactor power monitoring device

    Dogen, Ayumi; Ozawa, Michihiro.

    1983-01-01

    Purpose: To significantly improve the working efficiency of a nuclear reactor by reflecting the control rod history effect on thermal variants required for the monitoring of the reactor operation. Constitution: An incore power distribution calculation section reads the incore neutron fluxes detected by neutron detectors disposed in the reactor to calculate the incore power distribution. A burnup degree distribution calculation section calculates the burnup degree distribution in the reactor based on the thus calculated incore power distribution. A control rod history date store device supplied with the burnup degree distribution renews the stored control rod history data based on the present control rod pattern and the burnup degree distribution. Then, thermal variants of the nuclear reactor are calculated based on the thus renewed control rod history data. Since the control rod history effect is reflected on the thermal variants required for the monitoring of the reactor operation, the working efficiency of the nuclear reactor can be improved significantly. (Seki, T.)

  1. The Maple reactor project

    Malkoske, G.R.; Labrie, J.-P.

    2003-01-01

    MDS Nordion supplies the majority of the world's reactor-produced medical isotopes. These isotopes are currently produced in the NRU reactor at AECL's Chalk River Laboratories (CRL). Medical isotopes and related technology are relied upon around the world to prevent, diagnose and treat disease. The NRU reactor, which has played a key role in supplying medical isotopes to date, has been in operation for over 40 years. Replacing this aging reactor has been a priority for MDS Nordion to assure the global nuclear medicine community that Canada will continue to be a dependable supplier of medical isotopes. MDS Nordion contracted AECL to construct two MAPLE reactors dedicated to the production of medical isotopes. The MDS Nordion Medical Isotope Reactor (MMIR) project started in September 1996. This paper describes the MAPLE reactors that AECL has built at its CRL site, and will operate for MDS Nordion. (author)

  2. Fission reactors and materials

    Frost, B.R.T.

    1981-12-01

    The American-designed boiling water reactor and pressurized water reactor dominate the designs currently in use and under construction worldwide. As in all energy systems, materials problems have appeared during service; these include stress-corrosion of stainless steel pipes and heat exchangers and questions regarding crack behavior in pressure vessels. To obtain the maximum potential energy from our limited uranium supplies is is essential to develop the fast breeder reactor. The materials in these reactors are subjected to higher temperatures and neutron fluxes but lower pressures than in the water reactors. The performance required of the fuel elements is more arduous in the breeder than in water reactors. Extensive materials programs are in progress in test reactors and in large test rigs to ensure that materials will be available to meet these conditions

  3. Characterization of susceptibility and resistance responses to potato cyst nematode (Globodera spp.) infection of tomato lines in the absence and presence of the broad-spectrum nematode resistance Hero gene.

    Sobczak, Miroslaw; Avrova, Anna; Jupowicz, Justyna; Phillips, Mark S; Ernst, Karin; Kumar, Amar

    2005-02-01

    The tomato Hero A gene is the only member of a multigene family that confers a high level (>80%) of resistance to all the economically important pathotypes of potato cyst nematode (PCN) species Globodera rostochiensis and G. pallida. Although the resistance levels of transgenic tomato lines were similar to those of the tomato line LA1792 containing the introgressed Hero multigene family, transgenic potato plants expressing the tomato Hero A gene are not resistant to PCNs. Comparative microscopy studies of in vitro infected roots of PCN-susceptible tomato cv. Money Maker, the resistant breeding line LA1792, and transgenic line L10 with Ro1 pathotype have revealed no statistically significant difference in the number of juveniles invading roots. However, syncytia (specialized feeding cells) induced in LA1792 and L10 roots mostly were found to have degenerated a few days after their induction, and a few surviving syncytia were able to support only the development of males rather than females. Thus, the ratio between males and females was biased towards males on LA1792 and L10 roots. A series of changes occur in resistant plants leading to formation of a layer of necrotic cells separating the syncytium from stellar conductive tissues and this is followed by degradation of the syncytium. Although the Hero A gene is expressed in all tissues, including roots, stems, leaves, and flower buds, its expression is upregulated in roots in response to PCN infection. Moreover, the expression profiles of the Hero A correlates with the timing of death of the syncytium.

  4. Reactor Vessel Surveillance Program for Advanced Reactor

    Jeong, Kyeong-Hoon; Kim, Tae-Wan; Lee, Gyu-Mahn; Kim, Jong-Wook; Park, Keun-Bae; Kim, Keung-Koo

    2008-10-15

    This report provides the design requirements of an integral type reactor vessel surveillance program for an integral type reactor in accordance with the requirements of Korean MEST (Ministry of Education, Science and Technology Development) Notice 2008-18. This report covers the requirements for the design of surveillance capsule assemblies including their test specimens, test block materials, handling tools, and monitors of the surveillance capsule neutron fluence and temperature. In addition, this report provides design requirements for the program for irradiation surveillance of reactor vessel materials, a layout of specimens and monitors in the surveillance capsule, procedures of installation and retrieval of the surveillance capsule assemblies, and the layout of the surveillance capsule assemblies in the reactor.

  5. Research reactors in Argentina

    Carlos Ruben Calabrese

    1999-01-01

    Argentine Nuclear Development started in early fifties. In 1957, it was decided to built the first a research reactor. RA-1 reactor (120 kw, today licensed to work at 40 kW) started operation in January 1958. Originally RA-1 was an Argonaut (American design) reactor. In early sixties, the RA-1 core was changed. Fuel rods (20% enrichment) was introduced instead the old Argonaut core design. For that reason, a critical facility named RA-0 was built. After that, the RA-3 project started, to build a multipurpose 5 MW nuclear reactor MTR pool type, to produce radioisotopes and research. For that reason and to define the characteristics of the RA-3 core, another critical facility was built, RA-2. Initially RA-3 was a 90 % enriched fuel reactor, and started operation in 1967. When Atucha I NPP project started, a German design Power Reactor, a small homogeneous reactor was donated by the German Government to Argentina (1969). This was RA-4 reactor (20% enrichment, 1W). In 1982, RA-6 pool reactor achieved criticality. This is a 500 kW reactor with 90% enriched MTR fuel elements. In 1990, RA-3 started to operate fueled by 20% enriched fuel. In 1997, the RA-8 (multipurpose critical facility located at Pilcaniyeu) started to operate. RA-3 reactor is the most important CNEA reactor for Argentine Research Reactors development. It is the first in a succession of Argentine MTR reactors built by CNEA (and INVAP SE ) in Argentina and other countries: RA-6 (500 kW, Bariloche-Argentina), RP-10 (10MW, Peru), NUR (500 kW, Algeria), MPR (22 MW, Egypt). The experience of Argentinian industry permits to compete with foreign developed countries as supplier of research reactors. Today, CNEA has six research reactors whose activities have a range from education and promotion of nuclear activity, to radioisotope production. For more than forty years, Argentine Research Reactors are working. The experience of Argentine is important, and argentine firms are able to compete in the design and

  6. Siting of research reactors

    1987-01-01

    The purpose of this document is to develop criteria for siting and the site-related design basis for research reactors. The concepts presented in this document are intended as recommendations for new reactors and are not suggested for backfitting purposes for facilities already in existence. In siting research reactors serious consideration is given to minimizing the effects of the site on the reactor and the reactor on the site and the potential impact of the reactor on the environment. In this document guidance is first provided on the evaluation of the radiological impact of the installation under normal reactor operation and accident conditions. A classification of research reactors in groups is then proposed, together with a different approach for each group, to take into account the relevant safety problems associated with facilities of different characteristics. Guidance is also provided for both extreme natural events and for man-induced external events which could affect the safe operation of the reactor. Extreme natural events include earthquakes, flooding for river or coastal sites and extreme meteorological phenomena. The feasibility of emergency planning is finally considered for each group of reactors

  7. Reactor core for FBR type reactor

    Fujita, Tomoko; Watanabe, Hisao; Kasai, Shigeo; Yokoyama, Tsugio; Matsumoto, Hiroshi.

    1996-01-01

    In a gas-sealed assembly for a FBR type reactor, two or more kinds of assemblies having different eigen frequency and a structure for suppressing oscillation of liquid surface are disposed in a reactor core. Coolant introduction channels for introducing coolants from inside and outside are disposed in the inside of structural members of an upper shielding member to form a shielding member-cooling structure in the reactor core. A structure for promoting heat conduction between a sealed gas in the assembly and coolants at the inner side or the outside of the assembly is disposed in the reactor core. A material which generates heat by neutron irradiation is disposed in the assembly to heat the sealed gases positively by radiation heat from the heat generation member also upon occurrence of power elevation-type event to cause temperature expansion. Namely, the coolants flown out from or into the gas sealed-assemblies cause differential fluctuation on the liquid surface, and the change of the capacity of a gas region is also different on every gas-sealed assemblies thereby enabling to suppress fluctuation of the reactor power. Pressure loss is increased by a baffle plate or the like to lower the liquid surface of the sodium coolants or decrease the elevating speed thereof thereby suppressing fluctuation of the reactor power. (N.H.)

  8. Thai research reactor

    Aramrattana, M.

    1987-01-01

    The Office of Atomic Energy for Peace (OAEP) was established in 1962, as a reactor center, by the virtue of the Atomic Energy for Peace Act, under operational policy and authority of the Thai Atomic Energy for Peace Commission (TAEPC); and under administration of Ministry of Science, Technology and Energy. It owns and operates the only Thai Research Reactor (TRR-1/M1). The TRR-1/M1 is a mixed reactor system constituting of the old MTR type swimming pool, irradiation facilities and cooling system; and TRIGA Mark III core and control instrumentation. The general performance of TRR-1/M1 is summarized in Table I. The safe operation of TRR-1/M1 is regulated by Reactor Safety Committee (RSC), established under TAEPC, and Health Physics Group of OAEP. The RCS has responsibility and duty to review of and make recommendations on Reactor Standing Orders, Reactor Operation Procedures, Reactor Core Loading and Requests for Reactor Experiments. In addition,there also exist of Emergency Procedures which is administered by OAEP. The Reactor Operation Procedures constitute of reactor operating procedures, system operating procedures and reactor maintenance procedures. At the level of reactor routine operating procedures, there is a set of Specifications on Safety and Operation Limits and Code of Practice from which reactor shift supervisor and operators must follow in order to assure the safe operation of TRR-1/M1. Table II is the summary of such specifications. The OAEP is now upgrading certain major components of the TRR-1/M1 such as the cooling system, the ventilation system and monitoring equipment to ensure their adequately safe and reliable performance under normal and emergency conditions. Furthermore, the International Atomic Energy Agency has been providing assistance in areas of operation and maintenance and safety analysis. (author)

  9. Nuclear Reactor Physics

    Stacey, Weston M.

    2001-02-01

    An authoritative textbook and up-to-date professional's guide to basic and advanced principles and practices Nuclear reactors now account for a significant portion of the electrical power generated worldwide. At the same time, the past few decades have seen an ever-increasing number of industrial, medical, military, and research applications for nuclear reactors. Nuclear reactor physics is the core discipline of nuclear engineering, and as the first comprehensive textbook and reference on basic and advanced nuclear reactor physics to appear in a quarter century, this book fills a large gap in the professional literature. Nuclear Reactor Physics is a textbook for students new to the subject, for others who need a basic understanding of how nuclear reactors work, as well as for those who are, or wish to become, specialists in nuclear reactor physics and reactor physics computations. It is also a valuable resource for engineers responsible for the operation of nuclear reactors. Dr. Weston Stacey begins with clear presentations of the basic physical principles, nuclear data, and computational methodology needed to understand both the static and dynamic behaviors of nuclear reactors. This is followed by in-depth discussions of advanced concepts, including extensive treatment of neutron transport computational methods. As an aid to comprehension and quick mastery of computational skills, he provides numerous examples illustrating step-by-step procedures for performing the calculations described and chapter-end problems. Nuclear Reactor Physics is a useful textbook and working reference. It is an excellent self-teaching guide for research scientists, engineers, and technicians involved in industrial, research, and military applications of nuclear reactors, as well as government regulators who wish to increase their understanding of nuclear reactors.

  10. Reactor containment and reactor safety in the United States

    Kouts, H.

    1986-01-01

    The reactor safety systems of two reactors are studied aiming at the reactor containment integrity. The first is a BWR type reactor and is called Peachbottom 2, and the second is a PWR type reactor, and is called surry. (E.G.) [pt

  11. Multipurpose research reactors

    1988-01-01

    The international symposium on the utilization of multipurpose research reactors and related international co-operation was organized by the IAEA to provide for information exchange on current uses of research reactors and international co-operative projects. The symposium was attended by about 140 participants from 36 countries and two international organizations. There were 49 oral presentations of papers and 24 poster presentations. The presentations were divided into 7 sessions devoted to the following topics: neutron beam research and applications of neutron scattering (6 papers and 1 poster), reactor engineering (6 papers and 5 posters), irradiation testing of fuel and material for fission and fusion reactors (6 papers and 10 posters), research reactor utilization programmes (13 papers and 4 posters), neutron capture therapy (4 papers), neutron activation analysis (3 papers and 4 posters), application of small reactors in research and training (11 papers). A separate abstract was prepared for each of these papers. Refs, figs and tabs

  12. TRIGA reactor main systems

    Boeck, H.; Villa, M.

    2007-01-01

    This module describes the main systems of low power (<2 MW) and higher power (≥2 MW) TRIGA reactors. The most significant difference between the two is that forced reactor cooling and an emergency core cooling system are generally required for the higher power TRIGA reactors. However, those TRIGA reactors that are designed to be operated above 3 MW also use a TRIGA fuel that is specifically designed for those higher power outputs (3 to 14 MW). Typical values are given for the respective systems although each TRIGA facility will have unique characteristics that may only be determined by the experienced facility operators. Due to the inherent wide scope of these research reactor facilities construction and missions, this training module covers those systems found at most operating TRIGA reactor facilities but may also discuss non-standard equipment that was found to be operationally useful although not necessarily required. (author)

  13. Fast Spectrum Reactors

    Todd, Donald; Tsvetkov, Pavel

    2012-01-01

    Fast Spectrum Reactors presents a detailed overview of world-wide technology contributing to the development of fast spectrum reactors. With a unique focus on the capabilities of fast spectrum reactors to address nuclear waste transmutation issues, in addition to the well-known capabilities of breeding new fuel, this volume describes how fast spectrum reactors contribute to the wide application of nuclear power systems to serve the global nuclear renaissance while minimizing nuclear proliferation concerns. Readers will find an introduction to the sustainable development of nuclear energy and the role of fast reactors, in addition to an economic analysis of nuclear reactors. A section devoted to neutronics offers the current trends in nuclear design, such as performance parameters and the optimization of advanced power systems. The latest findings on fuel management, partitioning and transmutation include the physics, efficiency and strategies of transmutation, homogeneous and heterogeneous recycling, in addit...

  14. Upgradation of Apsara reactor

    Mammen, S.; Mukherjee, P.; Bhatnagar, A.; Sasidharan, K.; Raina, V.K.

    2009-01-01

    Apsara is a 1 MW swimming pool type research reactor using high enriched uranium as fuel with light water as coolant and moderator. The reactor is in operation for more than five decades and has been extensively used for basic research, radioisotope production, neutron radiography, detector testing, shielding experiments etc. In view of its long service period, it is planned to carry out refurbishment of the reactor to extend its useful life. During refurbishment, it is also planned to upgrade the reactor to a 2 MW reactor to improve its utilization and to upgrade the structure, system and components in line with the current safety standards. This paper gives a brief account of the design features and safety aspects of the upgraded Apsara reactor. (author)

  15. Victims and Heroes

    Højbjerg, Christian K.

    2010-01-01

    Victimization, autochthony and citizenship, power and nation-building constitute recurrent, interrelated themes in post-war Manding historical memory in the border area between Liberia and Guinea. While the perceived history of the Manding diverges from academic, historical knowledge as well...

  16. Thailand's unsung heroes.

    Treerutkuarkul, Apiradee

    2008-01-01

    The success of primary health care programmes in Thailand over the past three decades can be attributed not only to medical advances but to the role of community health volunteers. Buddhist monks and their temples have been strongly involved in health promotion and education, particularly in remote, rural communities.

  17. Local Heroes Live!

    1999-09-01

    Physics teacher Andrew Morrison from High Pavement College in Nottingham has recently been appointed as Schools' officer for particle physics by the Particle Physics and Astronomy Research Council, as part of the Council's Public Understanding of Science programme. As well as his role as an experienced physics teacher, Andrew has acted as marketing manager for his college and chair of the Nottinghamshire section of the Association for Science Education. He will now be working two days each week in his new role with PPARC, acting as a link between the science education and research communities, helping researchers develop ideas for promoting particle physics and leading some specific new projects for the production of schools materials. Andrew can be contacted at High Pavement Sixth Form College, Gainsford Crescent, Nottingham NG5 5HT (tel: 0115 916 6165 or e-mail: morrison@innotts.co.uk). On the other side of the Atlantic, an 18 year-old student at Atlee High School in Mechanicsville, Virginia, USA was the recipient of the `1999 Young Scientist of the Year' award. Jakob Harmon submitted a project on magnetic levitation (maglev) in this extracurricular competition organized by PhysLINK.com, a leading Internet authority on physics and engineering education. The prize was a summer placement at Virginia Polytechnic Institute, Blacksburg, where Jakob continued his education in one of the most active maglev research and development groups in the USA. He also received science books and software as part of the award. The PhysLINK.com award was established to recognize, encourage and foster talented high school students in physics and engineering, with the prize being designed to fit the specific needs and aspirations of each individual winner. Details of next year's competition, along with Jakob's project and more about magnetic levitation can be viewed at www.physlink.com or by contacting Anton Skorucak of PhysLINK.com at 11271 Ventura Blvd #299, Studio City, CA 91606, USA (fax: (1) 818 985 2466, e-mail: info@physlink.com).

  18. A Hero's Welcome.

    Moores, Samantha

    1999-01-01

    Tony Hopson founded and directs Self Enhancement, Inc., a nonprofit program that helps inner-city youth in Portland (Oregon) improve academically and develop talents, skills, values, and attitudes needed to become positive, contributing members of society. The program's success is based on the relationship model, continuity of services,…

  19. Greek Gods and Heroes

    Peter Schoon,; Sander Paarlberg,

    2001-01-01

    Many famous en less famous myths and historic events from Greek antiquity painted by Dutch and Flemish artists from the 16th and 17th century. For the first time a broad selection of paintings and prints with subjects from Greek mythology and history are exposed. Famous painters like Rembrandt,

  20. Heroes for Our Students.

    Brandriss, Tobie

    1999-01-01

    Describes six books appropriate for use with high school advanced or honors biology classes. The stories describe scientists who persevered against existing preconceptions in science or society at three levels: (1) prevailing mainstream scientific ideas; (2) gender; and (3) nationality or race. Presents ideas for using biographies as part of a…

  1. Revealing Television's Analogue Heroes

    Jackson, Vanessa

    2013-01-01

    abstractIn this article I will argue that we need to create new archival models in order to preserve and share knowledge of historical, ‘hidden’ television professions and production cultures. Oral history traditions of recording life stories give us a useful starting point. Engineering ‘encounters’

  2. The Heroes of CRISPR.

    Lander, Eric S

    2016-01-14

    Three years ago, scientists reported that CRISPR technology can enable precise and efficient genome editing in living eukaryotic cells. Since then, the method has taken the scientific community by storm, with thousands of labs using it for applications from biomedicine to agriculture. Yet, the preceding 20-year journey--the discovery of a strange microbial repeat sequence; its recognition as an adaptive immune system; its biological characterization; and its repurposing for genome engineering--remains little known. This Perspective aims to fill in this backstory--the history of ideas and the stories of pioneers--and draw lessons about the remarkable ecosystem underlying scientific discovery. Copyright © 2016 Elsevier Inc. All rights reserved.

  3. Revealing Television's Analogue Heroes

    Vanessa Jackson

    2013-12-01

    Full Text Available In this article I will argue that we need to create new archival models in order to preserve and share knowledge of historical, ‘hidden’ television professions and production cultures. Oral history traditions of recording life stories give us a useful starting point. Engineering ‘encounters’ between skilled television technicians, and the now obsolete equipment they operated in the 1970s and 80s, is challenging for a myriad of reasons, but videoing the interaction of man and machine provides us with a rich insight into how analogue television was produced and broadcast. Social media enables us to disseminate these histories in new and innovative ways..

  4. Reactor Engineering Division annual report

    1980-09-01

    Research activities in the Division of Reactor Engineering in fiscal 1979 are described. The work of the Division is closely related to development of multi-purpose Very High Temperature Gas Cooled Reactor and fusion reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and fusion reactor technology, and activities of the Committees on Reactor Physics and on Decomissioning of Nuclear Facilities. (author)

  5. Spectral shift reactor control method

    Impink, A.J. Jr.

    1981-01-01

    A method of operating a nuclear reactor having a core and coolant displacer elements arranged in the core wherein is established a reator coolant temperature set point at which it is desired to operate said reactor and first reactor coolant temperature band limits are provided within which said set point is located and it is desired to operate said reactor charactrized in that said reactor coolant displacer elements are moved relative to the reactor core for adjusting the volume of reactor coolant in said core as said reactor coolant temperature approaches said first band limits thereby to maintain said reactor coolant temperature near said set point and within said first band limits

  6. Reactor Engineering Department annual report

    1985-08-01

    Research and development activities in the Department of Reactor Engineering in fiscal 1984 are described. The work of the Department is closely related to development of multipurpose Very High Temperature Gas Cooled Reactor and Fusion Reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, reactor physics experiment and analysis, fusion neutronics, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, safeguards technology, and activities of the Committee on Reactor Physics. (author)

  7. Reactor Engineering Division annual report

    Matsuura, Shojiro; Nakahara, Yasuaki; Takano, Hideki

    1982-09-01

    Research and development activities in the Division of Reactor Engineering in fiscal 1981 are described. The work of the Division is closely related to development of multipurpose Very High Temperature Gas Cooled Reactor and fusion reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and fusion reactor technology, and activities of the Committee on Reactor Physics. (author)

  8. Power reactors operational diagnosis

    Dach, K.; Pecinka, L.

    1976-01-01

    The definition of reactor operational diagnostics is presented and the fundamental trends of research are determined. The possible sources of power reactor malfunctions, the methods of defect detection, the data evaluation and the analysis of the results are discussed in detail. In view of scarcity of a theoretical basis and of insufficient in-core instrumentation, operational diagnostics cannot be as yet incorporated in a computer-aided reactor control system. (author)

  9. Fast reactors worldwide

    Hall, R.S.; Vignon, D.

    1985-01-01

    The paper concerns the evolution of fast reactors over the past 30 years, and their present status. Fast reactor development in different countries is described, and the present position, with emphasis on cost reduction and collaboration, is examined. The French development of the fast breeder type reactor is reviewed, and includes: the acquisition of technical skills, the search for competitive costs and the spx2 project, and more advanced designs. Future prospects are also discussed. (U.K.)

  10. Pressurised water reactor operation

    Birnie, S.; Lamonby, J.K.

    1987-01-01

    The operation of a pressurized water reactor (PWR) is described with respect to the procedure for a unit start-up. The systems details and numerical data are for a four loop PWR station of the design proposed for Sizewell-'B', United Kingdom. A description is given of: the initial conditions, filling the reactor coolant system (RCS), heat-up and pressurisation of the RCS, secondary system preparations, reactor start-up, and reactivity control at power. (UK)

  11. Reactor Safety Analysis

    Arien, B.

    1998-01-01

    The objective of SCK-CEN's programme on reactor safety is to develop expertise in probabilistic and deterministic reactor safety analysis. The research programme consists of four main activities, in particular the development of software for reliability analysis of large systems and participation in the international PHEBUS-FP programme for severe accidents, the development of an expert system for the aid to diagnosis; the development and application of a probabilistic reactor dynamics method. Main achievements in 1999 are reported

  12. Seals in nuclear reactors

    1979-01-01

    The aim of this invention is the provision of improved seals for reactor vessels in which fuel assemblies are located together with inlets and outlets for the circulation of a coolant. The object is to provide a seal arrangement for the rotatable plugs of nuclear reactor closure heads which has good sealing capacities over a wide gap during operation of the reactor but which also permits uninhibited rotation of the plugs for maintenance. (U.K.)

  13. Reactor BR2

    Gubel, P

    2000-07-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. Various aspects concerning the operation of the BR2 Reactor, the utilisation of the CALLISTO loop and the irradiation programme, the BR2 R and D programme and the production of isotopes and of NTD-silicon are discussed. Progress and achievements in 1999 are reported.

  14. The Dragon reactor experiment

    Anon.

    1976-01-01

    The concept on which the Dragon Reactor Experiment was based was evolved at the Atomic Energy Research Establishment at Harwell in 1956, and in February of that year a High Temperature Gas- cooled Reactor Project Group was set up to study the feasibility of a helium-cooled reactor with a graphite or beryllium moderator, and with the emphasis on the thorium fuel cycle [af

  15. The replacement research reactor

    Cameron, R.

    1999-01-01

    As a consequences of the government decision in September 1997. ANSTO established a replacement research reactor project to manage the procurement of the replacement reactor through the necessary approval, tendering and contract management stages This paper provides an update of the status of the project including the completion of the Environmental Impact Statement. Prequalification and Public Works Committee processes. The aims of the project, management organisation, reactor type and expected capabilities are also described

  16. TRIGA reactor characteristics

    Boeck, H.; Villa, M.

    2007-01-01

    This module describes the general design, characteristics and parameters of TRIGA reactors and fuels. It is recommended that most of this information should be incorporated into any reactor operator training program and, in many cases, the facility Safety Analysis Report. It is oriented to teach the basics of the physics and mechanical design of the TRIGA fuel as well as its unique operational characteristics and the differences between TRIGA fuels and others more traditional reactor fuels. (nevyjel)

  17. Integral fast reactor

    Chang, Y.I.

    1989-01-01

    The Integral Fast Reactor (IFR) is an innovative liquid metal reactor concept being developed at Argonne National Laboratory. It seeks to specifically exploit the inherent properties of liquid metal cooling and metallic fuel in a way that leads to substantial improvements in the characteristics of the complete reactor system. This paper describes the key features and potential advantages of the IFR concept, with emphasis on its safety characteristics

  18. Reactor BR2

    Gubel, P.

    2000-01-01

    The BR2 reactor is still SCK-CEN's most important nuclear facility. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. Various aspects concerning the operation of the BR2 Reactor, the utilisation of the CALLISTO loop and the irradiation programme, the BR2 R and D programme and the production of isotopes and of NTD-silicon are discussed. Progress and achievements in 1999 are reported

  19. The Integral Fast Reactor

    Chang, Y.I.

    1988-01-01

    The Integral Fast Reactor (IFR) is an innovative liquid metal reactor concept being developed at Argonne National Laboratory. It seeks to specifically exploit the inherent properties of liquid metal cooling and metallic fuel in a way that leads to substantial improvements in the characteristics of the complete reactor system. This paper describes the key features and potential advantages of the IFR concept, with emphasis on its safety characteristics. 3 refs., 4 figs., 1 tab

  20. Linking Workplace Health Promotion Best Practices and Organizational Financial Performance: Tracking Market Performance of Companies With Highest Scores on the HERO Scorecard.

    Grossmeier, Jessica; Fabius, Ray; Flynn, Jennifer P; Noeldner, Steven P; Fabius, Dan; Goetzel, Ron Z; Anderson, David R

    2016-01-01

    The aim of the study was to evaluate the stock performance of publicly traded companies that received high scores on the HERO Employee Health Management Best Practices Scorecard in Collaboration with Mercer© based on their implementation of evidence-based workplace health promotion practices. A portfolio of companies that received high scores in a corporate health and wellness self-assessment was simulated based on past market performance and compared with past performance of companies represented on the Standard and Poor's (S&P) 500 Index. Stock values for a portfolio of companies that received high scores in a corporate health and wellness self-assessment appreciated by 235% compared with the S&P 500 Index appreciation of 159% over a 6-year simulation period. Robust investment in workforce health and well-being appears to be one of multiple practices pursued by high-performing, well-managed companies.

  1. Osobnosť gréckych hrdinov z pohľadu modernej psychológie (Personality of Greek Heroes from the Viewpoint of Modern Psychology

    Matúš Porubjak

    2012-03-01

    Full Text Available Drawing from Homer’s Iliad, the article focuses on characters of ancient Greek heroes and relates them to personality psychology. First, it discusses what major personality characteristics have been identified by modern psychological research and how they can be measured. In the next part, the authors summarize how they attempted to verify the historical and intercultural validity of outlined personality models using theIliad and present the results of their analysis. Concluding that ancient Greek accounts testify to the universality of human nature throughout ages and cultures, the article also provides the expected personality profiles of major heroes—Achilles and Agamemnon. Even more interestingly, the authors discuss how and why their motives and behavioral tendencies might cause clashes in their interaction, and also what occupational options they would probably face nowadays. Interdisciplinary in its nature, the paper concludes with implications of the results for philosophy.

  2. ‘An augury of the world’s ruin’ and the making of the tragic hero in Chinua Achebe’s Arrow of God

    Ignatius Chukwumah

    2016-06-01

    Full Text Available Chinua Achebe’s Arrow of God has been adjudged by critics as a tragic work with Ezeulu as its tragic hero. However, none of these studies has paid detailed attention to the framing of Ezeulu in the historical context of his age. How he appears when compared to a classical Greek tragic hero has also been ignored. A major context giving rise to Ezeulu becoming a tragic hero is the period leading to the synthesis of two contrary histories, juxtaposed discourses and the collision of opposites and contraries in the sociocultural and political sphere of the villages of Umuaro and Okperi. This circumstance is captured by the narrator as ‘an augury of the world’s ruin’, by Nwaka as ‘the white man turned us upside down’ and by Ezeulu as ‘the world is spoilt and there is no longer head or tail in anything that is done’. Allen, an earlier District Commissioner in Things Fall Apart, but textually implicated in Arrow of God, terms it ‘great situations’. The above historical context requires more than mastery and acknowledgement by the tragic figure, in the absence of which he, a self-professed knowledgeable person, becomes a victim of what he failed to take into account. Consequently, he is set aside as a specimen for history and other men. This article will use Hegel’s and Aristotle’s theories of history and of tragedy, respectively, to explicate the above. It concludes that the tragic hero of Chinua Achebe’s Arrow of God is substantially the victim of the clash between Umuaro’s history and Hegel’s History. ’n Teken van die wêreld se ondergang en die skepping van die tragiese held in Chinua Achebe se Arrow of God. Chinua Achebe se boek, Arrow of God, word deur kritici beskryf as ’n tragedie met die karakter Ezeulu as held. Niemand het egter noukeurige aandag geskenk aan hoe Ezeulu inpas in die gapings van botsende geskiedenisse soos vergestalt in die mens ten opsigte van hulle optredes, houdings, vrese en begeertes nie

  3. The Hero With a Thousand Faces In Yaşar Kemal's Çukurova Trilogy : The Other Face Of The Mountain = Yaşar Kemal'in Çukurova Üçlemesi : Dağın Öbür Yüzü'ndeki Bin Yüzlü Kahraman

    A. Clare BRANDABUR

    2003-01-01

    Full Text Available Joseph Campbell's classic work, The Hero With A Thousand Faces, traces the archetypal pattern of the hero from obscure origins, the call to adventure, the crossing of the threshold, encounter with dark forces, the winning of a boon, the re-crossing of the threshold, the re-entry of the ordinary world and the hero's re-integration with his community. The present paper traces this pattern in the Triliogy of Yaşar Kemal entitled The Other Face of the Mountain, following the hero Tashbash through the various phases of this archetypal-heroic journey. The presence in Yaşar Kemal's work of these universal patterns embodied in highly original and brilliant prose makes it clear that this Turkish novelist belongs among the great authors of world literature.

  4. Mirror fusion reactors

    Anon.

    1978-01-01

    Conceptual design studies were made of fusion reactors based on the three current mirror-confinement concepts: the standard mirror, the tandem mirror, and the field-reversed mirror. Recent studies of the standard mirror have emphasized its potential as a fusion-fission hybrid reactor, designed to produce fuel for fission reactors. We have designed a large commercial hybrid and a small pilot-plant hybrid based on standard mirror confinement. Tandem mirror designs include a commercial 1000-MWe fusion power plant and a nearer term tandem mirror hybrid. Field-reversed mirror designs include a multicell commercial reactor producing 75 MWe and a single-cell pilot plant

  5. HOMOGENEOUS NUCLEAR POWER REACTOR

    King, L.D.P.

    1959-09-01

    A homogeneous nuclear power reactor utilizing forced circulation of the liquid fuel is described. The reactor does not require fuel handling outside of the reactor vessel during any normal operation including complete shutdown to room temperature, the reactor being selfregulating under extreme operating conditions and controlled by the thermal expansion of the liquid fuel. The liquid fuel utilized is a uranium, phosphoric acid, and water solution which requires no gus exhaust system or independent gas recombining system, thereby eliminating the handling of radioiytic gas.

  6. Australian research reactor studies

    McCulloch, D.B.

    1978-01-01

    The Australian AEC has two research reactors at the Lucas Heights Research Establishment, a 10 HW DIDO class materials testing reactor, HIFAR, and a smaller 100kW reactor MOATA, which was recently upgraded from 10kW power level. Because of the HIFAR being some 20 years old, major renewal and repair programmes are necessary to keep it operational. To enable meeting projected increases in demand for radioisotopes, plans for a new reactor to replace the HIFAR have been made and the design criteria are described in the paper. (author)

  7. Mirror fusion reactors

    Carlson, G.A.; Moir, R.W.

    1978-01-01

    We have carried out conceptual design studies of fusion reactors based on the three current mirror confinement concepts: the standard mirror, the tandem mirror, and the field-reversed mirror. Recent studies of the standard mirror have emphasized its potential as a fusion-fission hybrid reactor, designed to produce fission fuel for fission reactors. We have designed a large commercial hybrid based on standard mirror confinement, and also a small pilot plant hybrid. Tandem mirror designs include a commercial 1000 MWe fusion power plant and a nearer term tandem mirror hybrid. Field-reversed mirror designs include a multicell commercial reactor producing 75 MWe and a single cell pilot plant

  8. Reactor feedwater system

    Hikabe, Katsumi.

    1978-01-01

    Purpose: In order to prevent thermal stresses of a core of PWR type reactor, described has been a method for feeding heated recirculating water to the core in the case of the reactor start-up or shut-down. Constitution: A recirculating water is degassed, cleaned up and heated in the steam condensers, and then feeds the water to the reactor, characterized in that heaters are provided in the bypasses of the turbine, so that heated water is constantly supplied to the reactor. (Nakamura, S.)

  9. Remote Reactor Monitoring

    Bernstein, Adam [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Dazeley, Steve [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Dobie, Doug [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Marleau, Peter [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Brennan, Jim [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Gerling, Mark [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sumner, Matthew [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sweany, Melinda [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2014-10-21

    The overall goal of the WATCHMAN project is to experimentally demonstrate the potential of water Cerenkov antineutrino detectors as a tool for remote monitoring of nuclear reactors. In particular, the project seeks to field a large prototype gadolinium-doped, water-based antineutrino detector to demonstrate sensitivity to a power reactor at ~10 kilometer standoff using a kiloton scale detector. The technology under development, when fully realized at large scale, could provide remote near-real-time information about reactor existence and operational status for small operating nuclear reactors out to distances of many hundreds of kilometers.

  10. Fusion Reactor Materials

    Decreton, M.

    2002-01-01

    The objective of SCK-CEN's programme on fusion reactor materials is to contribute to the knowledge on the radiation-induced behaviour of fusion reactor materials and components as well as to help the international community in building the scientific and technical basis needed for the construction of the future reactor. Ongoing projects include: the study of the mechanical and chemical (corrosion) behaviour of structural materials under neutron irradiation and water coolant environment; the investigation of the characteristics of irradiated first wall material such as beryllium; investigations on the management of materials resulting from the dismantling of fusion reactors including waste disposal. Progress and achievements in these areas in 2001 are discussed

  11. Trench reactor: an overview

    Spinrad, B.I.; Rohach, A.F.; Razzaque, M.M.; Sankoorikal, J.T.; Schmidt, R.S.; Lofshult, J.; Ramin, T.; Sokmen, N.; Lin, L.C.

    1988-01-01

    Recent fast, sodium-cooled reactor designs reflect new conditions. In nuclear energy these conditions are (a) emphasis on maintainability and operability, (b) design for more transparent safety, and (c) a surplus of uranium and enrichment availability that eases concerns about light water reactor fueling costs. In utility practice the demand is for less capital exposure, short construction time, smaller new unit sizes, and low capital cost. The PRISM, SAFR, and integral fast reactor (IFR) concepts are responses to these conditions. Fast reactors will not soon be deployed commercially, so more radical designs can be considered. The trench reactor is the product of such thinking. Its concepts are intended as contributions to the literature, which may be picked up by one of the existing programs or used in a new experimental project. The trench reactor is a thin-slab, pool-type reactor operated at very low power density and- for sodium-modest temperature. The thin slab is repeated in the sodium tank and the reactor core. The low power density permits a longer than conventional core height and a large-diameter fuel pin. Control is by borated steel slabs that can be lowered between the core and lateral sodium reflector. Shutdown is by semaphore slabs that can be swung into place just outside the control slabs. The paper presents major characteristics of the trench reactor that have been changed since the last report

  12. New reactor concepts

    Meskens, G.; Govaerts, P.; Baugnet, J.-M.; Delbrassine, A.

    1998-11-01

    The document gives a summary of new nuclear reactor concepts from a technological point of view. Belgium supports the development of the European Pressurized-Water Reactor, which is an evolutionary concept based on the European experience in Pressurized-Water Reactors. A reorientation of the Belgian choice for this evolutionary concept may be required in case that a decision is taken to burn plutonium, when the need for flexible nuclear power plants arises or when new reactor concepts can demonstrate proved benefits in terms of safety and cost

  13. Advanced CANDU reactors

    Dunn, J.T.; Finlay, R.B.; Olmstead, R.A.

    1988-12-01

    AECL has undertaken the design and development of a series of advanced CANDU reactors in the 700-1150 MW(e) size range. These advanced reactor designs are the product of ongoing generic research and development programs on CANDU technology and design studies for advanced CANDU reactors. The prime objective is to create a series of advanced CANDU reactors which are cost competitive with coal-fired plants in the market for large electricity generating stations. Specific plant designs in the advanced CANDU series will be ready for project commitment in the early 1990s and will be capable of further development to remain competitive well into the next century

  14. Mechanical spectral shift reactor

    Doshi, P.K.; George, R.A.; Dollard, W.J.

    1982-01-01

    A mechanical spectral shift arrangement for controlling a nuclear reactor includes a plurality of reactor coolant displacer members which are inserted into a reactor core at the beginning of the core life to reduce the volume of reactor coolant-moderator in the core at start-up. However, as the reactivity of the core declines with fuel depletion, selected displacer members are withdrawn from the core at selected time intervals to increase core moderation at a time when fuel reactivity is declining. (author)

  15. Nuclear reactor safety systems

    Ball, R.M.; Roberts, R.C.

    1980-01-01

    A safety system for shutting down a nuclear reactor under overload conditions is described. The system includes a series of parallel-connected computer memory type look-up tables each of which receives data on a particular reactor parameter and in each of which a precalculated functional value for that parameter is stored indicative of the percentage of maximum reactor load that the parameter contributes. The various functional values corresponding to the actual measured parameters are added together to provide a control signal used to shut down the reactor under overload conditions. (U.K.)

  16. RA Reactor; Reaktor RA

    NONE

    1978-02-15

    In addition to basic characteristics of the RA reactor, organizational scheme and financial incentives, this document covers describes the state of the reactor components after 18 years of operation, problems concerned with obtaining the licence for operation with 80% fuel, problems of spent fuel storage in the storage pool of the reactor building and the need for renewal of reactor equipment, first of all instrumentation. [Serbo-Croat] Pored osnovnih karakeristika reaktora RA, organizacije rada i finansijskih pokazatelja, razmatra se stanje opreme reaktora nakon 18 godina rada, pitanja dozvole za rad sa 80% obogacenim gorivom, problem skladistenja isluzenog goriva u bazenu zgrade reaktora i potreba za obnavljanjem komponenti opreme, pre svega elektronske.

  17. Nuclear reactor internals arrangement

    Frisch, E.; Andrews, H.N.

    1976-01-01

    A nuclear reactor internals arrangement is disclosed which facilitates reactor refueling. A reactor vessel and a nuclear core is utilized in conjunction with an upper core support arrangement having means for storing withdrawn control rods therein. The upper core support is mounted to the underside of the reactor vessel closure head so that upon withdrawal of the control rods into the upper core support, the closure head, the upper core support and the control rods are removed as a single unit thereby directly exposing the core for purposes of refueling

  18. Multi purpose research reactor

    Raina, V.K.; Sasidharan, K.; Sengupta, Samiran; Singh, Tej

    2006-01-01

    At present Dhruva and Cirus reactors provide the majority of research reactor based facilities to cater to the various needs of a vast pool of researchers in the field of material sciences, physics, chemistry, bio sciences, research and development work for nuclear power plants and production of radio isotopes. With a view to further consolidate and expand the scope of research and development in nuclear and allied sciences, a new 20 MWt multi purpose research reactor is being designed. This paper describes some of the design features and safety aspects of this reactor

  19. FBR type reactors

    Suzuoki, Akira; Yamakawa, Masanori.

    1985-01-01

    Purpose: To enable safety and reliable after-heat removal from a reactor core. Constitution: During ordinary operation of a FBR type reactor, sodium coolants heated to a high temperature in a reactor core are exhausted therefrom, collide against the reactor core upper mechanisms to radially change the flowing direction and then enter between each of the guide vanes. In the case if a main recycling pump is failed and stopped during reactor operation and the recycling force is eliminated, the swirling stream of sodium that has been resulted by the flow guide mechanism during normal reactor operation is continuously maintained within a plenum at a high temperature. Accordingly, the sodium recycling force in the coolant flow channels within the reactor vessel can surely be maintained for a long period of time due to the centrifugal force of the sodium swirling stream. In this way, since the reactor core recycling flow rate can be secured even after the stopping of the main recycling pump, after-heat from the reactor core can safely and surely be removed. (Seki, T.)

  20. FBR type reactor

    Hayase, Tamotsu.

    1991-01-01

    The present invention concerns an FBR type reactor in which transuranium elements are eliminated by nuclear conversion. There are loaded reactor core fuels being charged with mixed oxides of plutonium and uranium, and blanket fuels mainly comprising depleted uranium. Further, liquid sodium is used as coolants. As transuranium elements, isotope elements of neptunium, americium and curium contained in wastes taken out from light water reactors or the composition thereof are used. The reactor core comprises a region with a greater mixing ratio and a region with a less mixing ratio of the transuranium elements. The mixing ratio of the transuranium elements is made greater for the fuels in the reactor core region at the boundary with the blanket of great neutron leakage. With such a constitution, since the positive reactivity value at the reactor core central portion is small in the Na void reactivity distribution in the reactor core, the positive reactivity is small upon Na boiling in the reactor core central region upon occurrence of imaginable accident, to attain reactor safety. (I.N.)

  1. Farewell to a reactor

    Skanborg, P.

    1976-01-01

    Denmark's second reactor, DR 2, whose first criticality took place the night of 18/19 December 1958 was shut down for the last time on 31 October 1975. It was a light-water moderrated and cooled reactor of swimming-pool type with a thermal power of 5 MW, using 90% enriched uranium. The operation is described. The reactor and auxiliary equipment are now being put 'in store' - all fuel elements sent for reprocessing, the reactor tank and cooling circuits emptied, and a lead shielding placed over the tank opening. The rest of the equipment will remain in place. (B.P.)

  2. Indian advanced nuclear reactors

    Saha, D.; Sinha, R.K.

    2005-01-01

    For sustainable development of nuclear energy, a number of important issues like safety, waste management, economics etc. are to be addressed. To do this, a number of advanced reactor designs as well as fuel cycle technologies are being pursued worldwide. The advanced reactors being developed in India are the AHWR and the CHTR. Both the reactors use thorium based fuel and have many passive features. This paper describes the Indian advanced reactors and gives a brief account of the international initiatives for the sustainable development of nuclear energy. (author)

  3. Sense of Time in A. Akhmatova’s and T.S. Eliot’s Latter Poetry (Comparative Analysis of Poem Without a Hero and Four Quartets

    Anna Kurasova

    2018-01-01

    Full Text Available Anna Akhmatova and Thomas Stearns Eliot are considered among the most influential representatives of Modernism, Eliot - in Anglo-American Literature, and Akhmatova – in Russian. Modernism emerged at the beginning of the 20th century, seeking to point out people's failure to maintain a culture based on spiritual values,  an idea that was central to the works of Eliot and Akhmatova. By analysing and contrasting their last major poems, Four Quartets and Poem Without a Hero, this paper aims to present Eliot’s and Akhmatova’s perception of time and modernity. Faced with the tragedy of World War II, Eliot and Akhmatova turned to reflecting on notions of time and history. Despite the differences in the poets’ experiences, mentality, and background, Four Quartets and Poem Without a Hero bear a resemblance to each other in many respects and express the common for Akhmatova and Eliot perception of time. The poets saw time as a complex continuum, in which every element has its place and persistently interacts with all the other elements; thus, the past is present in our lives today and shapes our destiny. Therefore, history is not simply a sequence of past events unrelated to the present, but rather an active creator of every moment of our present lives. Establishing the immutable connection between the past, the present, and the future, the poets remind their readers of the notions of sin, guilt and responsibility. The poets also shared an attitude towards modernity, which they saw as a time of lost people who deny their past and for that reason will have no future unless they change. Therefore, in the face of eternity, which is wiser than we are capable of seeing, all that remains for humanity is acceptance and humility.

  4. The research reactors their contribution to the reactors physics

    Barral, J.C.; Zaetta, A.; Johner, J.; Mathoniere, G.

    2000-01-01

    The 19 october 2000, the french society of nuclear energy organized a day on the research reactors. This associated report of the technical session, reactors physics, is presented in two parts. The first part deals with the annual meeting and groups general papers on the pressurized water reactors, the fast neutrons reactors and the fusion reactors industry. The second part presents more technical papers about the research programs, critical models, irradiation reactors (OSIRIS and Jules Horowitz) and computing tools. (A.L.B.)

  5. RB Research nuclear reactor RB reactor, Annual report for 2000

    Milosevic, M.

    2000-12-01

    Report on RB reactor operation during 2000 contains 3 parts. Part one contains a brief description of reactor operation and reactor components, relevant dosimetry data and radiation protection issues, personnel and financial data. Part two is devoted to maintenance of the reactor components, namely, fuel, heavy water, reactor vessel, heavy water circulation system, absorption rods and heavy water level-meters, maintenance of electronic, mechanical, electrical and auxiliary equipment. Part three contains data concerned with reactor operation and utilization with a comprehensive list of publications resulting from experiments done at the RB reactor. It contains data about reactor operation during previous 14 years, i.e. from 1986 - 2000

  6. FFTF reactor assembly system technology

    Mangelsdorf, T.A.

    1975-01-01

    An overview is presented of the FFTF reactor and plant together with descriptions of core components, core internals, core system, primary and secondary control rod system, reactor instrumentation, reactor vessel and closure head, and supporting test programs

  7. Reactor building for a nuclear reactor

    Haidlen, F.

    1976-01-01

    The invention concerns the improvement of the design of a liner, supported by a latticed steel girder structure and destined for guaranteeing a gastight closure for the plant compartments in the reactor building of a pressurized water reactor. It is intended to provide the steel girder structure on their top side with grates, being suited for walking upon, and to hang on their lower side diaphragms in modular construction as a liner. At the edges they may be sealed with bellows in order to avoid thermal stresses. The steel girder structure may at the same time serve as supports for parts of the steam pipe. (RW) [de

  8. Revitalization of reactor usage through reactor sharing

    Vernetson, W.G.

    1986-01-01

    The purpose of this work was to renew interest in using the University Florida Training Reactor (UFTR) for educational and training purposes outside the Nuclear Engineering Sciences (NES) and Environmental Engineering Sciences (EES) Departments at the University of Florida and for research by others outside the NES Department. The availability of the UFTR made possible through a US Department of Energy (DOE) Reactor Sharing Grant provided the mechanism to pursue generation of renewed interest at all levels both within the University of Florida and from other educational and corporate institutions

  9. Reactor coolant pump for a nuclear reactor

    Burkhardt, W.; Richter, G.

    1976-01-01

    An improvement is proposed concerning the easier disengagement of the coupling at the reactor coolant pump for a nuclear reactor transporting a pressurized coolant. According to the invention the disengaging coupling consists of two parts separated by screws. At least one of the screws contains a propellent charge ananged within a bore and provided with a speed-dependent ignition device in such a way that by separation of the screws at overspeeds the coupling is disengaged. The sub-claims are concerned with the kind of ignition ot the propellent charge. (UWI) [de

  10. The fusion reactor

    Brennan, M.H.

    1974-01-01

    Basic principles of the fusion reactor are outlined. Plasma heating and confinement schemes are described. These confinement systems include the linear Z pinch, magnetic mirrors and Tokamaks. A fusion reactor is described and a discussion is given of its environmental impact and its fuel situation. (R.L.)

  11. Molten salt reactor concept

    Sood, D.D.

    1980-01-01

    Molten salt reactor is an advanced breeder concept which is suited for the utilization of thorium for nuclear power production. This reactor is based on the use of solutions of uranium or plutonium fluorides in LiF-BeF 2 -ThF 4 as fuel. Unlike the conventional reactors, no external coolant is used in the reactor core and the fuel salt itself is circulated through heat exchangers to transfer the fission produced heat to a secondary salt (NaF-NaBF 4 ) for steam generation. A part of the fuel stream is continuously processed to isolate 233 Pa, so that it can decay to fissile 233 U without getting converted to 234 Pa, and for the removal of neutron absorbing fission products. This on-line processing scheme makes this reactor concept to achieve a breeding ratio of 1.07 which is the highest for any thermal breeder reactor. Experimental studies at the Bhabha Atomic Research Centre, Bombay, have established the use of plutonium as fuel for this reactor. This molten salt reactor concept is described and the work conducted at the Bhabha Atomic Research Centre is summarised. (auth.)

  12. The heavy water reactors

    Brudermueller, G.

    1976-01-01

    This is a survey of the development so far of this reactor line which is in operation all over the world in various types (e.g. BHWR, PHWR). MZFR and the CANDU-type reactors are discussed in more detail. (UA) [de

  13. BWR type reactor

    Watanabe, Shoichi

    1983-01-01

    Purpose : To flatten the radial power distribution in the reactor core thereby improve the thermal performance of the reactor core by making the moderator-fuel ratio of fuel assemblies different depending on their position in the reactor core. Constitution : The volume of fuels disposed in the peripheral area of the reactor core is decreased by the increase of the volume of moderators in fuel assemblies disposed in the peripheral area of the reactor core to thereby make the moderator-fuel volume greater in the peripheral area than that in the central area. The moderator-fuel ratio adjustment is attained by making the number of water rods greater, decreasing the diameter of fuel pellets or decreasing the number of fuel pins in fuel assemblies disposed at the peripheral area of the reactor core as compared with fuel assemblies disposed at the central area of the reactor core. In this way, the infinite multiplication factors of fuels can be increased to thereby improve the reactor core performance. (Aizawa, K.)

  14. Osiris reactor descriptive report

    1976-03-01

    OSIRIS is a swimming pool reactor of 70 MW thermal power. Its main purpose is the irradiation of reactor materials in high neutron flux. A description is given of the air conditioning, ventilation, and radioactive gas removal system. (R.L.)

  15. FBR type reactor core

    Tamiya, Tadashi; Kawashima, Katsuyuki; Fujimura, Koji; Murakami, Tomoko.

    1995-01-01

    Neutron reflectors are disposed at the periphery of a reactor core fuel region and a blanket region, and a neutron shielding region is disposed at the periphery of them. The neutron reflector has a hollow duct structure having a sealed upper portion, a lower portion opened to cooling water, in which a gas and coolants separately sealed in the inside thereof. A driving pressure of a primary recycling pump is lowered upon reduction of coolant flow rate, then the liquid level of coolants in the neutron reflector is lowered due to imbalance between the driving pressure and a gas pressure, so that coolants having an effect as a reflector are eliminated from the outer circumference of the reactor core. Therefore, the amount of neutrons leaking from the reactor core is increased, and negative reactivity is charged to the reactor core. The negative reactivity of the neutron reflector is made greater than a power compensation reactivity. Since this enables reactor scram by using an inherent performance of the reactor core, the reactor core safety of an LMFBR-type reactor can be improved. (I.N.)

  16. Mirror hybrid reactor studies

    Bender, D.J.

    1978-01-01

    The hybrid reactor studies are reviewed. The optimization of the point design and work on a reference design are described. The status of the nuclear analysis of fast spectrum blankets, systems studies for fissile fuel producing hybrid reactor, and the mechanical design of the machine are reviewed

  17. Reactor Safety Analysis

    Arien, B.

    2000-01-01

    The objective of SCK-CEN's programme on reactor safety is to develop expertise in probabilistic and deterministic reactor safety analysis. The research programme consists of two main activities, in particular the development of software for reliability analysis of large systems and participation in the international PHEBUS-FP programme for severe accidents. Main achievements in 1999 are reported

  18. The Integral Fast Reactor

    Till, C.E.; Chang, Y.I.; Lineberry, M.J.

    1990-01-01

    Argonne National Laboratory, since 1984, has been developing the Integral Fast Reactor (IFR). This paper will describe the way in which this new reactor concept came about; the technical, public acceptance, and environmental issues that are addressed by the IFR; the technical progress that has been made; and our expectations for this program in the near term. 5 refs., 3 figs

  19. Gas-cooled reactors

    Vakilian, M.

    1977-05-01

    The present study is the second part of a general survey of Gas Cooled Reactors (GCRs). In this part, the course of development, overall performance and present development status of High Temperature Gas Cooled Reactors (HTCRs) and advances of HTGR systems are reviewed. (author)

  20. A nuclear power reactor

    Borrman, B.E.; Broden, P.; Lundin, N.

    1979-12-01

    The invention consists of shock absorbing support beams fastened to the underside of the reactor tank lid of a BWR type reactor, whose purpose is to provide support to the steam separator and dryer unit against accelerations due to earthquakes, without causing undue thermal stresses in the unit due to differential expansion. (J.I.W.)

  1. International thermal reactor development

    Zebroski, E.L.

    1977-01-01

    The worldwide development of nuclear power plants is reviewed. Charts are presented which show the commitment to light-water reactor capacity construction with breakdown by region and country. Additional charts show the major nuclear research centers which have substantial scope in light water reactor development and extensive international activities

  2. Thermal reactor strategy

    1981-01-01

    This statement sets down briefly the CEGB's views on the requirement for nuclear power and outlines current progress in the implementation of the CEGB's thermal reactor strategy. The programme is traced historically, together with statements of Government policy. The place of Magnox, AGR, SGHWR, PWR and fast breeder reactors is discussed. Advantages and problems associated with the various types are outlined. (U.K.)

  3. Supercritical Water Reactors

    Bouchter, J.C.; Dufour, P.; Guidez, J.; Latge, C.; Renault, C.; Rimpault, G.

    2014-01-01

    The supercritical water reactor (SCWR) is one of the 6 concepts selected for the 4. generation of nuclear reactors. SCWR is a new concept, it is an attempt to optimize boiling water reactors by using the main advantages of supercritical water: only liquid phase and a high calorific capacity. The SCWR requires very high temperatures (over 375 C degrees) and very high pressures (over 22.1 MPa) to operate which allows a high conversion yield (44% instead of 33% for a PWR). Low volumes of coolant are necessary which makes the neutron spectrum shift towards higher energies and it is then possible to consider fast reactors operating with supercritical water. The main drawbacks of supercritical water is the necessity to use very high pressures which has important constraints on the reactor design, its physical properties (density, calorific capacity) that vary strongly with temperatures and pressures and its very high corrosiveness. The feasibility of the concept is not yet assured in terms of adequate materials that resist to corrosion, reactor stability, reactor safety, and reactor behaviour in accidental situations. (A.C.)

  4. Reactor Materials Research

    Van Walle, E.

    2001-01-01

    The activities of the Reactor Materials Research Department of the Belgian Nuclear Research Centre SCK-CEN in 2000 are summarised. The programmes within the department are focussed on studies concerning (1) fusion, in particular mechanical testing; (2) Irradiation Assisted Stress Corrosion Cracking (IASCC); (3) nuclear fuel; and (4) Reactor Pressure Vessel Steel (RPVS)

  5. Fusion reactors - types - problems

    Schmitter, K.H.

    1979-07-01

    A short account is given of the principles of fusion reactions and of the expected advantages of fusion reactors. Descriptions are presented of various Tokamak experimental devices being developed in a number of countries and of some mirror machines. The technical obstacles to be overcome before a fusion reactor could be self-supporting are discussed. (U.K.)

  6. Reactor cost driving items

    Spears, W.R.

    1987-01-01

    Assuming that the design solutions presently perceived for NET can be extrapolated for use in a power reactor, and using costing experience with present day fusion experiments and with fission power plants, the major components of the cost of a tokamak fusion power reactor are described. The analysis shows the emphasis worth placing on various areas of plant design to reduce costs

  7. Tank type reactor

    Otsuka, Fumio.

    1989-01-01

    The present invention concerns a tank type reactor capable of securing reactor core integrity by preventing incorporation of gases to an intermediate heat exchanger, thgereby improving the reliability. In a conventional tank type reactor, since vortex flows are easily caused near the inlet of an intermediate heat exchanger, there is a fear that cover gases are involved into the coolant main streams to induce fetal accidents. In the present invention, a reactor core is suspended by way of a suspending body to the inside of a reactor vessel and an intermediate heat exchanger and a pump are disposed between the suspending body and the reactor vessel, in which a vortex current preventive plate is attached at the outside near the coolant inlet on the primary circuit of the intermediate heat exchanger. In this way vortex or turbulence near the inlet of the intermediate heata exchanger or near the surface of coolants can be prevented. Accordingly, the cover gases are no more involved, to insure the reactor core integrity and obtain a tank type nuclear reactor of high reliability. (I.S.)

  8. Reactor Materials Research

    Van Walle, E

    2001-04-01

    The activities of the Reactor Materials Research Department of the Belgian Nuclear Research Centre SCK-CEN in 2000 are summarised. The programmes within the department are focussed on studies concerning (1) fusion, in particular mechanical testing; (2) Irradiation Assisted Stress Corrosion Cracking (IASCC); (3) nuclear fuel; and (4) Reactor Pressure Vessel Steel (RPVS)

  9. Space Nuclear Reactor Engineering

    Poston, David Irvin [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-03-06

    We needed to find a space reactor concept that could be attractive to NASA for flight and proven with a rapid turnaround, low-cost nuclear test. Heat-pipe-cooled reactors coupled to Stirling engines long identified as the easiest path to near-term, low-cost concept.

  10. Reactor dynamics calculations

    Devooght, J.; Lefvert, T.; Stankiewiez, J.

    1981-01-01

    This chapter deals with the work done in reactor dynamics within the Coordinated Research Program on Transport Theory and Advanced Reactor Calculations by three groups in Belgium, Poland, Sweden and Italy. Discretization methods in diffusion theory, collision probability methods in time-dependent neutron transport and singular perturbation method are represented in this paper

  11. Status of French reactors

    Ballagny, A. [Commissariat a l`Energie Atomique, Saclay (France)

    1997-08-01

    The status of French reactors is reviewed. The ORPHEE and RHF reactors can not be operated with a LEU fuel which would be limited to 4.8 g U/cm{sup 3}. The OSIRIS reactor has already been converted to LEU. It will use U{sub 3}Si{sub 2} as soon as its present stock of UO{sub 2} fuel is used up, at the end of 1994. The decision to close down the SILOE reactor in the near future is not propitious for the start of a conversion process. The REX 2000 reactor, which is expected to be commissioned in 2005, will use LEU (except if the fast neutrons core option is selected). Concerning the end of the HEU fuel cycle, the best option is reprocessing followed by conversion of the reprocessed uranium to LEU.

  12. Compact torsatron reactors

    Lyon, J.F.; Carreras, B.A.; Lynch, V.E.; Tolliver, J.S.; Sviatoslavsky, I.N.

    1988-05-01

    Low-aspect-ratio torsatron configurations could lead to compact stellarator reactors with R 0 = 8--11m, roughly one-half to one-third the size of more conventional stellarator reactor designs. Minimum-size torsatron reactors are found using various assumptions. Their size is relatively insensitive to the choice of the conductor parameters and depends mostly on geometrical constraints. The smallest size is obtained by eliminating the tritium breeding blanket under the helical winding on the inboard side and by reducing the radial depth of the superconducting coil. Engineering design issues and reactor performance are examined for three examples to illustrate the feasibility of this approach for compact reactors and for a medium-size (R 0 ≅ 4 m,/bar a/ /approx lt/ 1 m) copper-coil ignition experiment. 26 refs., 11 figs., 7 tabs

  13. Iris reactor conceptual design

    Carelli, M.D.; Conway, L.E.; Petrovic, B.; Paramonov, D.V.; Galvin, M.; Todreas, N.E.; Lombardi, C.V.; Maldari, F.; Ricotti, M.E.; Cinotti, L.

    2001-01-01

    IRIS (International Reactor Innovative and Secure) is a modular, integral, light water cooled, low-to-medium power (100-350 MWe) reactor which addresses the requirements defined by the US DOE for Generation IV reactors, i.e., proliferation resistance, enhanced safety, improved economics and fuel cycle sustainability. It relies on the proven technology of light water reactors and features innovative engineering, but it does not require new technology development. This paper discusses the current reference IRIS design, which features a 1000 MWt thermal core with proven 5%-enriched uranium oxide fuel and five-year long straight burn fuel cycle, integral reactor vessel housing helical tube steam generators and immersed spool pumps. Other major contributors to the high level of safety and economic attractiveness are the safety by design and optimized maintenance approaches, which allow elimination of some classes of accidents, lower capital cost, long operating cycle, and high capacity factors. (author)

  14. The secure heating reactor

    Pind, C.

    1987-01-01

    The SECURE heating reactor was designed by ASEA-ATOM as a realistic alternative for district heating in urban areas and for supplying heat to process industries. SECURE has unique safety characteristics, that are based on fundamental laws of physics. The safety does not depend on active components or operator intervention for shutdown and cooling of the reactor. The inherent safety characteristics of the plant cannot be affected by operator errors. Due to its very low environment impact, it can be sited close to heat consumers. The SECURE heating reactor has been shown to be competitive in comparison with other alternatives for heating Helsinki and Seoul. The SECURE heating reactor forms a basis for the power-producing SECURE-P reactor known as PIUS (Process Inherent Ultimate Safety), which is based on the same inherent safety principles. The thermohydraulic function and transient response have been demonstrated in a large electrically heated loop at the ASEA-ATOM laboratories

  15. Nuclear reactor design

    2014-01-01

    This book focuses on core design and methods for design and analysis. It is based on advances made in nuclear power utilization and computational methods over the past 40 years, covering core design of boiling water reactors and pressurized water reactors, as well as fast reactors and high-temperature gas-cooled reactors. The objectives of this book are to help graduate and advanced undergraduate students to understand core design and analysis, and to serve as a background reference for engineers actively working in light water reactors. Methodologies for core design and analysis, together with physical descriptions, are emphasized. The book also covers coupled thermal hydraulic core calculations, plant dynamics, and safety analysis, allowing readers to understand core design in relation to plant control and safety.

  16. Mirror reactor surface study

    Hunt, A. L.; Damm, C. C.; Futch, A. H.; Hiskes, J. R.; Meisenheimer, R. G.; Moir, R. W.; Simonen, T. C.; Stallard, B. W.; Taylor, C. E.

    1976-09-01

    A general survey is presented of surface-related phenomena associated with the following mirror reactor elements: plasma first wall, ion sources, neutral beams, director converters, vacuum systems, and plasma diagnostics. A discussion of surface phenomena in possible abnormal reactor operation is included. Several studies which appear to merit immediate attention and which are essential to the development of mirror reactors are abstracted from the list of recommended areas for surface work. The appendix contains a discussion of the fundamentals of particle/surface interactions. The interactions surveyed are backscattering, thermal desorption, sputtering, diffusion, particle ranges in solids, and surface spectroscopic methods. A bibliography lists references in a number of categories pertinent to mirror reactors. Several complete published and unpublished reports on surface aspects of current mirror plasma experiments and reactor developments are also included.

  17. Reactor control device

    Fukami, Haruo; Morimoto, Yoshinori.

    1981-01-01

    Purpose: To operate a reactor always with safety operation while eliminating the danger of tripping. Constitution: In a reactor control device adapted to detect the process variants of a reactor, control a control rod drive controlling system based on the detected signal to thereby control the driving the control rods, control the reactor power and control the electric power generated from an electric generator by the output from the reactor, detection means is provided for the detection of the electric power from said electric generator, and a compensation device is provided for outputting control rod driving compensation signals to the control rod driving controlling system in accordance with the amount of variation in the detected value. (Seki, T.)

  18. Reactor feedwater device

    Igarashi, Noboru.

    1986-01-01

    Purpose: To suppress soluble radioactive corrosion products in a feedwater device. Method: In a light water cooled nuclear reactor, an iron injection system is connected to feedwater pipeways and the iron concentration in the feedwater or reactor coolant is adjusted between twice and ten times of the nickel concentration. When the nickel/iron ratio in the reactor coolant or feedwater goes nearer to 1/2, iron ions are injected together with iron particles to the reactor coolant to suppress the leaching of stainless steels, decrease the nickel in water and increase the iron concentration. As a result, it is possible to suppress the intrusion of nickel as one of parent nuclide of radioactive nuclides. Further, since the iron particles intruded into the reactor constitute nuclei for capturing the radioactive nuclides to reduce the soluble radioactive corrosion products, the radioactive nuclides deposited uniformly to the inside of the pipeways in each of the coolant circuits can be reduced. (Kawakami, Y.)

  19. Research reactor DHRUVA

    Veeraraghaven, N.

    1990-01-01

    DHRUVA, a 100 MWt research reactor located at the Bhabha Atomic Research Centre, Bombay, attained first criticality during August, 1985. The reactor is fuelled with natural uranium and is cooled, moderated and reflected by heavy water. Maximum thermal neutron flux obtained in the reactor is 1.8 X 10 14 n/cm 2 /sec. Some of the salient design features of the reactor are discussed in this paper. Some important features of the reactor coolant system, regulation and protection systems and experimental facilities are presented. A short account of the engineered safety features is provided. Some of the problems that were faced during commissioning and the initial phase of power operation are also dealt upon

  20. Reactor power control device

    Kobayashi, Akira.

    1980-01-01

    Purpose: To prevent misoperation in a control system for the adjustment of core coolant flow rate, and the increase in the neutron flux density caused from the misoperation in BWR type reactors. Constitution: In a reactor power control system adapted to control the reactor power by the adjustment of core flow rate, average neutron flux signals of a reactor core, entire core flow rate signals and operation state signals for coolant recycling system are inputted to a microcomputer. The outputs from the computer are sent to a recycling MG set speed controller to control the reactor core flow rate. The computer calculates the change ratio with time in the average neutron flux signals, correlation between the average neutron flux signals and the entire core flow rate signals, change ratio with time in the operation state signals for the coolant recycling system and the like and judges the abnormality in the coolant recycling system based on the calculated results. (Ikeda, J.)

  1. Fusion reactor pumped laser

    Jassby, D.L.

    1988-01-01

    A nuclear pumped laser is described comprising: a toroidal fusion reactor, the reactor generating energetic neutrons; an annular gas cell disposed around the outer periphery of the reactor, the cell including an annular reflecting mirror disposed at the bottom of the cell and an annular output window disposed at the top of the cell; a gas lasing medium disposed within the annular cell for generating output laser radiation; neutron reflector material means disposed around the annular cell for reflecting neutrons incident thereon back into the gas cell; neutron moderator material means disposed between the reactor and the gas cell and between the gas cell and the neutron reflector material for moderating the energy of energetic neutrons from the reactor; converting means for converting energy from the moderated neutrons to energy pumping means for pumping the gas lasing medium; and beam compactor means for receiving output laser radiation from the annular output window and generating a single output laser beam therefrom

  2. Reactor core cooling device

    Kobayashi, Masahiro.

    1986-01-01

    Purpose: To safely and effectively cool down the reactor core after it has been shut down but is still hot due to after-heat. Constitution: Since the coolant extraction nozzle is situated at a location higher than the coolant injection nozzle, the coolant sprayed from the nozzle, is free from sucking immediately from the extraction nozzle and is therefore used effectively to cool the reactor core. As all the portions from the top to the bottom of the reactor are cooled simultaneously, the efficiency of the reactor cooling process is increased. Since the coolant extraction nozzle can be installed at a point considerably higher than the coolant injection nozzle, the distance from the coolant surface to the point of the coolant extraction nozzle can be made large, preventing cavitation near the coolant extraction nozzle. Therefore, without increasing the capacity of the heat exchanger, the reactor can be cooled down after a shutdown safely and efficiently. (Kawakami, Y.)

  3. Mirror reactor surface study

    Hunt, A.L.; Damm, C.C.; Futch, A.H.; Hiskes, J.R.; Meisenheimer, R.G.; Moir, R.W.; Simonen, T.C.; Stallard, B.W.; Taylor, C.E.

    1976-01-01

    A general survey is presented of surface-related phenomena associated with the following mirror reactor elements: plasma first wall, ion sources, neutral beams, director converters, vacuum systems, and plasma diagnostics. A discussion of surface phenomena in possible abnormal reactor operation is included. Several studies which appear to merit immediate attention and which are essential to the development of mirror reactors are abstracted from the list of recommended areas for surface work. The appendix contains a discussion of the fundamentals of particle/surface interactions. The interactions surveyed are backscattering, thermal desorption, sputtering, diffusion, particle ranges in solids, and surface spectroscopic methods. A bibliography lists references in a number of categories pertinent to mirror reactors. Several complete published and unpublished reports on surface aspects of current mirror plasma experiments and reactor developments are also included

  4. Status of French reactors

    Ballagny, A.

    1997-01-01

    The status of French reactors is reviewed. The ORPHEE and RHF reactors can not be operated with a LEU fuel which would be limited to 4.8 g U/cm 3 . The OSIRIS reactor has already been converted to LEU. It will use U 3 Si 2 as soon as its present stock of UO 2 fuel is used up, at the end of 1994. The decision to close down the SILOE reactor in the near future is not propitious for the start of a conversion process. The REX 2000 reactor, which is expected to be commissioned in 2005, will use LEU (except if the fast neutrons core option is selected). Concerning the end of the HEU fuel cycle, the best option is reprocessing followed by conversion of the reprocessed uranium to LEU

  5. The CAREM reactor and present currents in reactor design

    Ordonez, J.P.

    1990-01-01

    INVAP has been working on the CAREM project since 1983. It concerns a very low power reactor for electrical energy generation. The design of the reactor and the basic criteria used were described in 1984. Since then, a series of designs have been presented for reactors which are similar to CAREM regarding the solutions presented to reduce the chance of major nuclear accidents. These designs have been grouped under different names: Advanced Reactors, Second Generation Reactors, Inherently Safe Reactors, or even, Revolutionary Reactors. Every reactor fabrication firm has, at least, one project which can be placed in this category. Presently, there are two main currents of Reactor Design; Evolutionary and Revolutionary. The present work discusses characteristics of these two types of reactors, some revolutionary designs and common criteria to both types. After, these criteria are compared with CAREM reactor design. (Author) [es

  6. Reactor Engineering Division annual report

    Hirota, Jitsuya; Asaoka, Takumi; Suzuki, Tomoo; Mitani, Hiroshi; Akino, Fujiyoshi

    1977-09-01

    Research activities in the Division of Reactor Engineering in fiscal 1976 are described. Works of the division concern mainly the development of multi-purpose Very High Temperature Gas Cooled Reactor, fusion reactor engineering, and the development of Liquid Metal Fast Breeder Reactor in Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology, and activities of the Committee on Reactor Physics. (auth.)

  7. Reactor Engineering Division annual report

    1978-10-01

    Research activities in the Division of Reactor Engineering in fiscal 1977 are described. Works of the Division are development of multi-purpose Very High Temperature Gas Cooled Reactor, fusion reactor engineering, and development of Liquid Metal Fast Breeder Reactor for Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology, and Committee on Reactor Physics. (Author)

  8. Reactor Engineering Division annual report

    1976-09-01

    Research activities conducted in Reactor Engineering Division in fiscal 1975 are summarized in this report. Works in the division are closely related to the development of multi-purpose High-temperature Gas Cooled Reactor, the development of Liquid Metal Fast Breeder Reactor by Power Reactor and Nuclear Fuel Development Corporation, and engineering research of thermonuclear fusion reactor. Many achievements are described concerning nuclear data and group constants, theoretical method and code development, integral experiment and analysis, shielding, heat transfer and fluid dynamics, reactor and nuclear instrumentation, dynamics analysis and control method development, fusion reactor technology and activities of the Committee on Reactor Physics. (auth.)

  9. Reactor Engineering Department annual report

    1984-08-01

    Research and development activities in the Department of Reactor Engineering in fiscal 1983 are described. The work of the Department is closely related to development of multipurpose Very High Temperature Gas Cooled Reactor and Fusion Reactor, and development of Liquid Metal Fast Breeder Reactor carried out by Power Reactor and Nuclear Fuel Development Corporation. Contents of the report are achievements in fields such as nuclear data and group constants, theoretical method and code development, integral experiment and analysis, fusion neutronics, shielding, reactor and nuclear instrumentation, reactor control and diagnosis, and safeguards technology, and activities of the Committee on Reactor Physics. (author)

  10. Multi-purpose reactor

    1991-05-01

    The Multi-Purpose-Reactor (MPR), is a pool-type reactor with an open water surface and variable core arrangement. Its main feature is plant safety and reliability. Its power is 22MW t h, cooled by light water and moderated by beryllium. It has platetype fuel elements (MTR type, approx. 20%. enriched uranium) clad in aluminium. Its cobalt (Co 60 ) production capacity is 50000 Ci/yr, 200 Ci/gr. The distribution of the reactor core and associated control and safety systems is essentially based on the following design criteria: - upwards cooling flow, to waive the need for cooling flow inversion in case the reactor is cooled by natural convection if confronted with a loss of pumping power, and in order to establish a superior heat transfer potential (a higher coolant saturation temperature); - easy access to the reactor core from top of pool level with the reactor operating at full power, in order to facilitate actual implementation of experiments. Consequently, mechanisms associated to control and safety rods s,re located underneath the reactor tank; - free access of reactor personnel to top of pool level with the reactor operating at full power. This aids in the training of personnel and the actual carrying out of experiments, hence: - a vast water column was placed over the core to act as radiation shielding; - the core's external area is cooled by a downwards flow which leads to a decay tank beyond the pool (for N 16 to decay); - a small downwards flow was directed to stream downwards from above the reactor core in order to drag along any possibly active element; and - a stagnant hot layer system was placed at top of pool level so as to minimize the upwards coolant flow rising towards pool level

  11. Mirror reactor studies

    Moir, R.W.; Barr, W.L.; Bender, D.J.

    1977-01-01

    Design studies of a fusion mirror reactor, a fusion-fission mirror reactor, and two small mirror reactors are summarized. The fusion reactor uses 150-keV neutral-beam injectors based on the acceleration of negative ions. The injectors provide over 1 GW of continuous power at an efficiency greater than 80%. The fusion reactor has three-stage, modularized, Venetian blind, plasma direct converter with a predicted efficiency of 59% and a new concept for removal of the lune-shaped blanket: a crane is brought between the two halves of the Yin-Yang magnet, which are separated by a float. The design has desirable features such as steady-state operation, minimal impurity problems, and low first-wall thermal stress. The major disadvantage is low Q resulting in high re-circulating power and hence high cost of electrical power. However, the direct capital cost per unit of gross electrical power is reasonable [$1000/kW(e)]. By contrast, the fusion-fission reactor design is not penalized by re-circulating power and uses relatively near-term fusion technology being developed for the fusion power program. New results are presented on the Th- 233 U and the U- 239 Pu fuel cycles. The purpose of this hybrid is fuel production, with projected costs at $55/g of Pu or $127/g of 233 U. Blanket and cooling system designs, including an emergency cooling system, by General Atomic Company, lead us to the opinion that the reactor can meet expected safety standards for licensing. The smallest mirror reactor having only a shield between the plasma and the coil is the 4.2-m long fusion engineering research facility (FERF) designed for material irradiation. The smallest mirror reactor having both a blanket and shield is the 7.5-m long experimental power reactor (EPR), which has both a fusion and a fusion-fission version. (author)

  12. Reactor performance calculations for water reactors

    Hicks, D.

    1970-04-01

    The principles of nuclear, thermal and hydraulic performance calculations for water cooled reactors are discussed. The principles are illustrated by describing their implementation in the UKAEA PATRIARCH scheme of computer codes. This material was originally delivered as a course of lectures at the Technical University of Helsinki in Summer of 1969.

  13. Reactor scram device for FBR type reactor

    Kumasaka, Katsuyuki; Arashida, Genji; Itooka, Satoshi.

    1991-01-01

    In a control rod attaching structure in a reactor scram device of an FBR type reactor, an anti-rising mechanism proposed so far against external upward force upon occurrence of earthquakes relies on the engagement of a mechanical structure but temperature condition is not taken into consideration. Then, in the present invention, a material having curie temperature characteristics and which exhibits ferromagnetism only under low temperature condition and a magnet device are disposed to one of a movable control rod and a portion secured to the reactor. Alternatively, a bimetal member or a shape memory alloy which actuates to fix to the mating member only under low temperature condition is secured. The fixing device is adapted to operate so as to secure the control rods when the low temperature state is caused depending on the temperature condition. With such a constitution, when the control rods are separated from a driving device, they are prevented from rising even if they undergo external upward force due to earthquakes and so on, which can improve the reactor safety. (N.H.)

  14. Fourth Generation Reactor Concepts

    Furtek, A.

    2008-01-01

    Concerns over energy resources availability, climate changes and energy supply security suggest an important role for nuclear energy in future energy supplies. So far nuclear energy evolved through three generations and is still evolving into new generation that is now being extensively studied. Nuclear Power Plants are producing 16% of the world's electricity. Today the world is moving towards hydrogen economy. Nuclear technologies can provide energy to dissociate water into oxygen and hydrogen and to production of synthetic fuel from coal gasification. The introduction of breeder reactors would turn nuclear energy from depletable energy supply into an unlimited supply. From the early beginnings of nuclear energy in the 1940s to the present, three generations of nuclear power reactors have been developed: First generation reactors: introduced during the period 1950-1970. Second generation: includes commercial power reactors built during 1970-1990 (PWR, BWR, Candu, Russian RBMK and VVER). Third generation: started being deployed in the 1990s and is composed of Advanced LWR (ALWR), Advanced BWR (ABWR) and Passive AP600 to be deployed in 2010-2030. Future advances of the nuclear technology designs can broaden opportunities for use of nuclear energy. The fourth generation reactors are expected to be deployed by 2030 in time to replace ageing reactors built in the 1970s and 1980s. The new reactors are to be designed with a view of the following objectives: economic competitiveness, enhanced safety, minimal radioactive waste production, proliferation resistance. The Generation IV International Forum (GIF) was established in January 2000 to investigate innovative nuclear energy system concepts. GIF members include Argentina, Brazil, Canada, Euratom, France Japan, South Africa, South Korea, Switzerland, United Kingdom and United States with the IAEA and OECD's NEA as permanent observers. China and Russia are expected to join the GIF initiative. The following six systems

  15. Reactor Engineering Department annual report

    1993-09-01

    This report summarizes the research and development activities in the Department of Reactor Engineering during the fiscal year of 1992 (April 1, 1992-March 31, 1993). The major Department's programs promoted in the year are the assessment of the high conversion light water reactor, the design activities of advanced reactor system and development of a high energy proton linear accelerator for the engineering applications including TRU incineration. Other major tasks of the Department are various basic researches on the nuclear data and group constants, the developments of theoretical methods and codes, the reactor physics experiments and their analyses, fusion neutronics, radiation shielding, reactor instrumentation, reactor control/diagnosis, thermohydraulics and technology developments related to the reactor physics facilities. The cooperative works to JAERI's major projects such as the high temperature gas cooled reactor or the fusion reactor and to PNC's fast reactor project were also progressed. The activities of the Research Committee on Reactor Physics are also summarized. (author)

  16. Reactor engineering department annual report

    1990-09-01

    This report summarizes the research and development activities in the Department of Reactor Engineering during the fiscal year of 1989 (April 1, 1989 - March 31, 1990). One of major Department's programs is the assessment of the high conversion light water reactor and the design activities of advanced reactor system. Development of a high energy proton linear accelerator for the nuclear engineering including is also TRU incineration promoted. Other major tasks of the Department are various basic researches on nuclear data and group constants, theoretical methods and code development, on reactor physics experiments and analyses, fusion neutronics, radiation shielding, reactor instrumentation, reactor control/diagnosis, thermohydraulics, technology assessment of nuclear energy and technology developments related to the reactor physics facilities. The cooperative works to JAERI's major projects such as the high temperature gas cooled reactor or the fusion reactor and to PNC's fast reactor project also progressed. The activities of the Research Committee on Reactor Physics are also summarized. (author)

  17. Reactor safety protection system

    Nishi, Hiroshi; Yokoyama, Tsuguo.

    1989-01-01

    A plurality of neutron detectors are disposed around a reactor core and detection signals from optional two neutron detectors are inputted into a ratio calculation device. If the ratio between both of the neutron flux level signals exceeds a predetermined value, a reactor trip signal is generated from an alarm setting device. Further, detection signals from all of the neutron detection devices are inputted into an average calculation device and the reactor trip signal is generated also in a case where the average value exceeds a predetermined set value. That is, when the reactor core power is increased locally, the detection signal from the neutron detector nearer to the point of power increase is greater than the increase rate for the entire reactor core power, while the detection signal from the neutron detector remote from the point of power increase is smaller. Thus, the local power increase ratio in the FBR reactor core can be detected efficiently by calculating the ratio for the neutron flux level signals from two neutron detectors, thereby enabling to exactly recognize the local power increase rate in the reactor core. (N.H.)

  18. Nuclear reactor containing facility

    Hidaka, Masataka; Murase, Michio.

    1994-01-01

    In a reactor containing facility, a condensation means is disposed above the water level of a cooling water pool to condensate steams of the cooling water pool, and return the condensated water to the cooling water pool. Upon occurrence of a pipeline rupture accident, steams generated by after-heat of a reactor core are caused to flow into a bent tube, blown from the exit of the bent tube into a suppression pool and condensated in a suppression pool water, thereby suppressing the pressure in the reactor container. Cooling water in the cooling water pool is boiled by heat conduction due to the condensation of steams, then the steams are exhausted to the outside of the reactor container to remove the heat of the reactor container to the outside of the reactor. In addition, since cooling water is supplied to the cooling water pool quasi-permanently by gravity as a natural force, the reactor container can be cooled by the cooling water pool for a long period of time. Since the condensation means is constituted with a closed loop and interrupted from the outside, radioactive materials are never released to the outside. (N.H.)

  19. Method of reactor operation

    Maeda, Katsuji.

    1982-01-01

    Purpose: To prevent stress corrosion cracks in stainless steels caused from hydrogen peroxide in reactor operation in which the density of hydrogen peroxide in the reactor water is controlled upon reactor start-up. Method: A heat exchanger equipped with a heat source for applying external heat is disposed into the recycling system for reactor coolants. Upon reactor start-up, the coolants are heated by the heat exchanger till arriving at a temperature at which the dissolving rate is faster than the forming rate of hydrogen peroxide in the coolants, and nuclear heating is started after reaching the above temperature. The temperature of the reactor water is increased in such a manner and, when it arrives at 140 0 C, extraction of control elements is started and the heat source for the heat exchanger is interrupted simultaneously. In this way spikes in the density of hydrogen peroxide are suppressed upon reactor start-up to thereby decrease the stress corrosion cracks in stainless steels. (Horiuchi, T.)

  20. Nuclear reactor control column

    Bachovchin, D.M.

    1982-01-01

    The nuclear reactor control column comprises a column disposed within the nuclear reactor core having a variable cross-section hollow channel and containing balls whose vertical location is determined by the flow of the reactor coolant through the column. The control column is divided into three basic sections wherein each of the sections has a different cross-sectional area. The uppermost section of the control column has the greatest crosssectional area, the intermediate section of the control column has the smallest cross-sectional area, and the lowermost section of the control column has the intermediate cross-sectional area. In this manner, the area of the uppermost section can be established such that when the reactor coolant is flowing under normal conditions therethrough, the absorber balls will be lifted and suspended in a fluidized bed manner in the upper section. However, when the reactor coolant flow falls below a predetermined value, the absorber balls will fall through the intermediate section and into the lowermost section, thereby reducing the reactivity of the reactor core and shutting down the reactor