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Sample records for heike kamerlingh onnes

  1. Heike Kamerlingh Onnes and the Road to Superconductivity

    Science.gov (United States)

    van Delft, Dirk

    2011-03-01

    The discovery of superconductivity on 8 April 1911 came as a big surprise. It was stumbled upon in the Leiden cryogenic laboratory of Heike Kamerlingh Onnes in a moment of serendipity. Three years before, the liquefaction of helium on the other hand had been the culmination of a long battle with nature. It was a meticulously prepared operation, ``big science'' in its first appearance. Until recently, careless notebook entries by Kamerlingh Onnes and his terrible handwriting had hindered a complete view to the road to superconductivity. Even a date of the fascinating discovery was lacking. How did the discovery fit into the Leiden research program? What about the research effort Kamerlingh Onnes had to put in to be sure he had found superconductivity rather than a short-circuit? What about superfluidity? Once the right interpretation of the notebooks is clear, the real story can be told.

  2. Through measurement to knowledge the selected papers of Heike Kamerlingh onnes 1853–1926

    CERN Document Server

    Goudaroulis, Yorgos

    1991-01-01

    "Tile; D'apC:Tile; l. DpWTa ()coi 7rpo7rapod)w £ D'T}K,mi'. "between us and Goodness the gods have placed the sweat of our brows". This quote from Isiodos, the first lyrical poet, is jotted on a sheet of paper found among the papers of Heike Kamerlingh Onnes at the Boerhaave Museum, Leiden. On this same sheet, one can also read quotes from Schiller, Goethe, Shakespeare, Homer, Pindar and Dante. Each quote is for somebody or something. It appears to have been a game played at least by Ehrenfest and Crommelin -an unmistakable sign of these two physicists's deep culture. This particular quote was for the "Werkplaats", the Physical Laboratory of the University of Leiden. Our purpose in putting together the Selected Papers of its first Director, Kamerlingh Onnes (1853-1926), is to try and articulate the dominant trends of a different type of culture at Leiden: its physics culture during the years that established low temperature physics as a distinct branch of physics. Our aims in choosing the particular papers a...

  3. Superconductivity: Heike's heritage

    NARCIS (Netherlands)

    van der Marel, D.; Golden, M.

    2011-01-01

    A century ago, Heike Kamerlingh Onnes discovered superconductivity. And yet, despite the conventional superconductors being understood, the list of unconventional superconductors is growing — for which unconventional theories may be required.

  4. Growth and characterization of chemical solution based nanostructured coated conductors with CeO(2) cap layers

    OpenAIRE

    Vlad, Valentina Roxana

    2011-01-01

    100 años después de que el físico holandés Heike Kamerlingh Onnes descubriera que el mercurio tiene una resistencia eléctrica igual a cero, cuando se enfría en el helio líquido, los superconductores son lanzados finalmente para su uso en las redes eléctricas. Los cables superconductores pueden transportar diez veces más energía que el mismo volumen de los cables convencionales de cobre. Aunque parte de esta energía se pierde (pérdidas de corriente alterna) y se necesita usar el nitrógeno líqu...

  5. Hendrik Antoon Lorentz: his role in physics and society

    Science.gov (United States)

    Berends, Frits

    2009-04-01

    Hendrik Antoon Lorentz (1853-1928) was appointed in 1878 to a chair of theoretical physics at the University of Leiden, one of the first of such chairs in the world. A few years later Heike Kamerlingh Onnes became his experimental colleague, after vehement discussions in the faculty. Lorentz strongly supported Kamerlingh Onnes then, and proved subsequently to be an ideal colleague. With Lorentz's electron theory the classical theory of electromagnetism obtained its final form, at the time often called the Maxwell-Lorentz theory. In this theory the Zeeman effect could be explained: the first glimpse of the electron. The Nobel Prize followed in 1902. The Lorentz transformation, established in 1904, preceded the special theory of relativity. Later on, Lorentz played a much admired role in the debate on the new developments in physics, in particular as chairman of a series of Solvay conferences. Gradually his stature outside of physics grew, both nationally as chairman of the Zuiderzee committee and internationally as president of the International Commission on Intellectual Cooperation of the League of Nations. At his funeral the overwhelming tribute was the recognition of his unique greatness. Einstein said about him 'He meant more to me personally than anyone else I have met on my life's journey'.

  6. Hendrik Antoon Lorentz: his role in physics and society

    Energy Technology Data Exchange (ETDEWEB)

    Berends, Frits [Emeritus Theoretical Physics, Leiden University (Netherlands)

    2009-04-22

    Hendrik Antoon Lorentz (1853-1928) was appointed in 1878 to a chair of theoretical physics at the University of Leiden, one of the first of such chairs in the world. A few years later Heike Kamerlingh Onnes became his experimental colleague, after vehement discussions in the faculty. Lorentz strongly supported Kamerlingh Onnes then, and proved subsequently to be an ideal colleague. With Lorentz's electron theory the classical theory of electromagnetism obtained its final form, at the time often called the Maxwell-Lorentz theory. In this theory the Zeeman effect could be explained: the first glimpse of the electron. The Nobel Prize followed in 1902. The Lorentz transformation, established in 1904, preceded the special theory of relativity. Later on, Lorentz played a much admired role in the debate on the new developments in physics, in particular as chairman of a series of Solvay conferences. Gradually his stature outside of physics grew, both nationally as chairman of the Zuiderzee committee and internationally as president of the International Commission on Intellectual Cooperation of the League of Nations. At his funeral the overwhelming tribute was the recognition of his unique greatness. Einstein said about him 'He meant more to me personally than anyone else I have met on my life's journey'.

  7. Hendrik Antoon Lorentz: his role in physics and society

    International Nuclear Information System (INIS)

    Berends, Frits

    2009-01-01

    Hendrik Antoon Lorentz (1853-1928) was appointed in 1878 to a chair of theoretical physics at the University of Leiden, one of the first of such chairs in the world. A few years later Heike Kamerlingh Onnes became his experimental colleague, after vehement discussions in the faculty. Lorentz strongly supported Kamerlingh Onnes then, and proved subsequently to be an ideal colleague. With Lorentz's electron theory the classical theory of electromagnetism obtained its final form, at the time often called the Maxwell-Lorentz theory. In this theory the Zeeman effect could be explained: the first glimpse of the electron. The Nobel Prize followed in 1902. The Lorentz transformation, established in 1904, preceded the special theory of relativity. Later on, Lorentz played a much admired role in the debate on the new developments in physics, in particular as chairman of a series of Solvay conferences. Gradually his stature outside of physics grew, both nationally as chairman of the Zuiderzee committee and internationally as president of the International Commission on Intellectual Cooperation of the League of Nations. At his funeral the overwhelming tribute was the recognition of his unique greatness. Einstein said about him 'He meant more to me personally than anyone else I have met on my life's journey'.

  8. A possible approach from BCS through HTS to RTS with three examples

    International Nuclear Information System (INIS)

    Chu, C.W.

    2012-01-01

    This paper is based on my talk delivered at the superconductivity centennial conference in The Hague, the Netherlands, on September 23, 2011, to explore the possibility of room temperature superconductivity according to what we have learned from the past, especially in the last 25 years since the discovery of high temperature superconductivity. While the field of superconductivity is broad, I have chosen to focus on the advancement of T c , which has been a major driving force for sustaining research on superconductivity for the last 100 years, ever since its discovery by Heike Kamerlingh Onnes in Leiden. A holistic multidisciplinary enlightened empirical approach is proposed with some specific steps following a brief summary of the past history in the search for superconductors with higher T c . Before concluding, three specific examples of our effort toward superconductors of higher T c are given to demonstrate that the future in raising T c is vast and bright.

  9. What is new in the world of superconductors?

    International Nuclear Information System (INIS)

    Das, M.P.

    2002-01-01

    Full text: Ever since its discovery in 1911 by Heike Kamerlingh-Onnes in Leiden, superconductivity has promised tantalising possibilities of widespread applications. After 1986 its occurrence in cuprates above the liquid nitrogen temperature reaffirmed its capabilities for very many practical uses. More recently a number of novel materials namely intercalated fullerenes (C-60) and n-cenes (anthra-cene, tetra-cene and penta-cenes), a simple bimetallic alloy (MgB2), and ferromagnetic materials under high pressure including Fe, ZrZn2, and UGe2 have surprised us with their peculiar superconducting properties. In this talk I shall give a pedagogic survey of some of our current understanding- how these novel materials superconduct. I shall highlight a host of observable anomalies associated with these superconductors and discuss if their occurrence throws any light on the microscopic understanding of the superconducting phenomenon. I shall illustrate with a number of practical applications accomplished to date

  10. Centenary of the discovery of superconductivity

    CERN Multimedia

    Anaïs Vernède

    2011-01-01

    To mark the centenary of the discovery of the phenomenon of superconductivity, MANEP and the University of Geneva are organising open days at the PhysiScope between 8 and 15 April 2011. On 13 April CERN will make a contribution to the series of events with a lecture on superconductivity followed by a demonstration of the phenomenon at the Globe   Historic graph showing the superconducting transition of mercury, measured in Leiden in 1911 by H. Kamerlingh Onnes. On 8 April 2011 it will be a hundred years since the discovery of superconductivity by the Dutch physicist Kamerlingh Onnes. To mark the occasion, the University of Geneva and MANEP are organising a week-long interactive workshop at the PhysiScope. “The purpose of this initiative is to introduce the general public to this spectacular phenomenon by giving them an opportunity to take part in entertaining experiments”, explains Adriana Aleman, Head of Communications of the University of Geneva. As its contribution to the e...

  11. Superfluid helium-4: An introductory review

    International Nuclear Information System (INIS)

    Vinen, W.F.

    1983-01-01

    Helium was first liquefied by Kamerlingh Onnes in Leiden in July 1908, an achievement that followed much careful and painstaking work. On the same day Onnes reduced the temperature of his helium to a value approaching lK, and he must therefore have produced and observed the superfluid phase. These experimental discoveries led very quickly to a series of remarkable theoretical contributions that laid the foundations for all subsequent work. The period since the second world war has of course seen an enormous amount of work on superfluid helium-4. In reviewing it the author tries to see it in terms of two threads: one originating from Landau; the other from London

  12. The anisosphere as a new tool for interpreting Foucault pendulum experiments. Part I: harmonic oscillators

    Science.gov (United States)

    Verreault, René

    2017-08-01

    In an attempt to explain the tendency of Foucault pendula to develop elliptical orbits, Kamerlingh Onnes derived equations of motion that suggest the use of great circles on a spherical surface as a graphical illustration for an anisotropic bi-dimensional harmonic oscillator, although he did not himself exploit the idea any further. The concept of anisosphere is introduced in this work as a new means of interpreting pendulum motion. It can be generalized to the case of any two-dimensional (2-D) oscillating system, linear or nonlinear, including the case where coupling between the 2 degrees of freedom is present. Earlier pendulum experiments in the literature are revisited and reanalyzed as a test for the anisosphere approach. While that graphical method can be applied to strongly nonlinear cases with great simplicity, this part I is illustrated through a revisit of Kamerlingh Onnes' dissertation, where a high performance pendulum skillfully emulates a 2-D harmonic oscillator. Anisotropy due to damping is also described. A novel experiment strategy based on the anisosphere approach is proposed. Finally, recent original results with a long pendulum using an electronic recording alidade are presented. A gain in precision over traditional methods by 2-3 orders of magnitude is achieved.

  13. Toxicity evaluation of ballast water discharged at The Onne Port ...

    African Journals Online (AJOL)

    The discharge of these ballast water poses a major environmental threat to the water quality and Port infrastructures at the Onne Port complex as contaminants may find their way into the food chain/food web and bioaccumulate in the tissues of indigenous biota (microorganisms, crabs, mangrove oysters and fin-fishes).

  14. STATE, MARKET AND CIVIL SOCIETY AS ACTORS OF DEVELOPMENT: the Challenge of Sustainability in the 21st Century. Interview with Lecturer Heike Doering, PhD

    Directory of Open Access Journals (Sweden)

    Priscila De Nadai

    2016-01-01

    Full Text Available In this edition, professor Priscila De Nadai interviewed Heike Doering, PhD in Sociology from Cardiff University (United Kingdom, lecturer at Cardiff Business School and researcher of the Centre for Local and Regional Government Research, also from Cardiff University. In the past few years,  she has conducted research about reginal development and sustainability management, in emerging economies. One of her research projects is being developed in Espírito Santo in partnership with researchers from our State. In this interview, profesor Heike Doering will tell us about her trajectory as a researcher, about her studies and the specific research she is currently conducting in Espírito Santo.

  15. The Sequence of Wet and Dry Days at Ibadan and Onne (Sub ...

    African Journals Online (AJOL)

    Twenty-three years daily rainfall data were collected for Ibadan while twenty years data were collected for Onne. These data were analysed and modelled for the dependence of wet days following dry days; dry days following wet days; dry days following dry days and wet days following wet days using the first order Markov ...

  16. Evolution of new superconductors. Past, present and future

    International Nuclear Information System (INIS)

    Akimitsu, Jun

    2011-01-01

    I present here the past and present situations of new superconductors and also the future prospect. Superconductivity has started since Kamerlingh Onnes first observed the zero resistivity. After that, the critical temperature T c was gradually increased. In the early stage of superconductive material investigations, main contribution has been made by B. Matthias and his group. In 1986, a new superconductor La-Ba-Cu-O, which belongs to new category in the superconducting society, has been found by Bednorz and Mueller. After that T c 's have been drastically increased, and finally reached to T c - 164 K in the Hg-compound. Next, I review several new superconductors discovered within 20 years. Finally, I mention my personal perspective to a high-T c superconductor. (author)

  17. Museums theme – Quest for Absolute Zero: A Human Story about Rivalry and Cold

    Directory of Open Access Journals (Sweden)

    Dirk van Delft

    2017-11-01

    Full Text Available In 2008 Rijksmuseum Boerhaave organised an exhibition on the occasion of the centennial of the liquefaction of helium by Kamerlingh Onnes in Leiden. Quest for Absolute Zero was the first major temporary exhibition aimed at new target groups. Therefore the focus was on the human scale and the colourful story behind the ‘man of Absolute Zero’. The fierce competition with James Dewar from the Royal Institution was also highlighted. The outcome of Quest for Absolute Zero was extremely positive for Rijksmuseum Boerhaave in terms of visitor numbers, media coverage, collaborations and side events. The project also proved to be a very useful lever for the renewal of the permanent exhibition, scheduled to open in December 2017.

  18. REPORT FROM THE ORGANIZERS: The 25th International Conference on Low Temperature Physics

    Science.gov (United States)

    Kes, Peter

    2009-03-01

    The 25th International Conference on Low Temperature Physics (LT25) was hosted by the Kamerlingh Onnes Laboratorium of the Leiden Institute of Physics and held in the RAI Convention Center in Amsterdam, The Netherlands, 6-13 August 2008. It was the second time that the Kamerlingh Onnes Laboratory had the privilege of organizing an LT conference. In 1958, at LT6, 50 years of liquid helium temperatures were commemorated; in 2008 we celebrated the 100th anniversary of the remarkable achievements of Heike Kamerlingh Onnes and his collaborators in Leiden. In 1958 there were 323 participants and 145 papers appeared in the proceedings; in 2008 these numbers had increased to 1390 participants and 900 papers, of which eventually 849 were accepted. This large participation required adequate conference and housing facilities. These could not be found in Leiden, but were conveniently available in Amsterdam. The triennial International Low Temperature Conferences are organized under the auspices of the International Union of Pure and Applied Physics (IUPAP) through Commission C5 on Low Temperature Physics. It is the most important global meeting that brings together the international scientific community in the broad field of Low Temperature Physics. Because the meeting is held only every third year the 11 plenary and 22 half plenary talks (of 45 or 30 min.) generally provide an overview of important new discoveries over the last few years, whereas the 161 short oral presentations (20 min.) are mainly focused on very recent developments. Since the field is broad, embracing a large section of condensed matter physics, the program is divided into five parallel program lines: A. Quantum Gases, Fluids and Solids B. Superconductivity C. Quantum Phase Transitions and Magnetism D. Electronic Quantum Transport in Condensed Matter E. Cryogenic Techniques and Applications This distinction was used both to group the 1625 accepted abstracts, and the short-oral and poster presentations; the

  19. Report from the organizers Report from the organizers

    Science.gov (United States)

    Kes, Peter

    2009-04-01

    The 25th International Conference on Low Temperature Physics (LT25) was hosted by the Kamerlingh Onnes Laboratorium of the Leiden Institute of Physics and held in the RAI Convention Center in Amsterdam, The Netherlands, 6-13 August 2008. It was the second time that the Kamerlingh Onnes Laboratory had the privilege of organizing an LT conference. In 1958, at LT6, 50 years of liquid helium temperatures were commemorated; in 2008 we celebrated the 100th anniversary of the remarkable achievements of Heike Kamerlingh Onnes and his collaborators in Leiden. In 1958 there were 323 participants and 145 papers appeared in the proceedings; in 2008 these numbers increased to 1390 participants and 900 submitted papers, of which eventually 849 were accepted. This large participation required adequate conference and housing facilities. These could not be found in Leiden, but were conveniently available in Amsterdam. The triennial international low temperature conferences are organized under the auspices of the international union of pure and applied physics (IUPAP) through commission C5 on low temperature physics. It is the most important global meeting that brings together the international scientific community in the broad field of low temperature physics. Because the meeting is held only every third year the 11 plenary and 22 half-plenary talks (of 45 or 30 min) generally provide an overview of important new discoveries over the last few years, whereas the 161 short oral presentations (20 min) are mainly focused on very recent and ongoing developments. Since the field is broad, embracing a large section of condensed matter physics, the program is divided into five parallel program lines: A. Quantum gases, fluids and solids. B. Superconductivity. C. Quantum phase transitions and magnetism. D. Electronic quantum transport in condensed matter. E. Cryogenic techniques and applications. This distinction was used both to group the 1625 accepted abstracts, and the short-oral and

  20. Summer Course on the Science and Technology of Superconductivity

    CERN Document Server

    Gregory, W D; Mathews, W N; The science and technology of superconductivity

    1973-01-01

    Since the discovery of superconductivity in 1911 by H. Kamerlingh Onnes, of the order of half a billion dollars has been spent on research directed toward understanding and utiliz­ ing this phenomenon. This investment has gained us fundamental understanding in the form of a microscopic theory of superconduc­ tivity. Moreover, superconductivity has been transformed from a laboratory curiosity to the basis of some of the most sensitive and accurate measuring devices known, a whole host of other elec­ tronic devices, a soon-to-be new international standard for the volt, a prototype generation of superconducting motors and gener­ ators, and magnets producing the highest continuous magnetic fields yet produced by man. The promise of more efficient means of power transmission and mass transportation, a new generation of superconducting motors and generators, and computers and other electronic devices with superconducting circuit elements is all too clear. The realization of controlled thermonuclear fu...

  1. ESTADO, MERCADO E SOCIEDADE CIVIL COMO ATORES DO DESENVOLVIMENTO: o desafio da sustentabilidade no século XXI. Entrevista com a professora doutora Heike Doering.

    Directory of Open Access Journals (Sweden)

    Priscila De Nadai

    2016-01-01

    Full Text Available Nessa edição, a Revista Foco, por meio da Profa. Dra. Priscila De Nadai, traz uma entrevista com Heike Doering, PhD em Sociologia pela Universidade Cardiff (Reino Unido, professora da Escola de Negócios de Cardiff e pesquisadora do Centre for Local and Regional Government Research, também da Universidade Cardiff. Nos últimos anos, Doering tem desenvolvido pesquisas sobre desenvolvimento regional e gestão da sustentabilidade em economias emergentes. Um dos seus projetos de pesquisa está sendo desenvolvido no Espírito Santo em parceria com pesquisadores locais. Nessa entrevista, ela expõe sua trajetória como pesquisadora, os seus temas de estudo, além de nos apresentar a pesquisa que está desenvolvendo.

  2. Exploring Learners’ Mental Health Profile: A study in Universiti Tun Hussein Onn Malaysia

    Science.gov (United States)

    Lee, M. F.; Lai, C. S.

    2017-08-01

    Mental health issue was a serious matter that was often neglected by people. This article will describe a study of the mental health profile among the learners of Malaysia Technical University (MTU) that focus on Universiti Tun Hussein Onn Malaysia (UTHM). A survey using DASS-21 inventory and self-developed questionnaire was used for this study to investigate learners’ mental health level in three elements and factors contribute towards mental health. A total number of 450 students from seven faculties in UTHM was strata randomly selected as sampel for this study. The relationships between factors of mental health and the elements of mental health was identified. Collected data was analysed using percentage, mean score, standard deviation and multiple linear regression. Findings showed that majority of students possess normal level but the percentage of severe and extremely severe level was increasing. The main factor highly significantly correlate to all the mental health elements was self-evaluation. Hence, it is highly recommended that mental health issue needs great attention and remedial action from higher learning institution, non-governmental organizations, parents, students themselves and other concerned bodies.

  3. Jednadžbe stanja realnih plinova

    Directory of Open Access Journals (Sweden)

    Simeon, V.

    2006-11-01

    Full Text Available The properties of classical real gases, especially their deviations from ideal behaviour, are reviewed. After a brief overview of molecular interactions, the so-called traditional ('primitive' model is presented and shown to be applicable not only to monoatomic but also for many polyatomicclassical gases. Two-coefficient equation of state was derived by using virial theorem. The best known equation of state for real gases – van der Waals equation - was derived by using canonical partition function. Among the empirical equations of state, Kamerlingh-Onnes' virial expansionwas described, as well as some equations of state frequently used in technical thermodynamics (Redlich-Kwong, Peng-Robinson and Benedict-Webb-Rubin. A review of statistical models of real gases is given. Cluster model is presented where all deviations from perfect gas behaviour are described by configuration integral. In addition, the limits of the cluster model are given. The Kirkwood's model of integral equation is also discussed. This model, unlike the Mayer's cluster model, is based on a hierarchy of radial distribution functions for many molecules. Finally, the methods of numerical simulation (Monte Carlo and molecular dynamics are shortly reviewed

  4. Foucault and the rotation of the Earth

    Science.gov (United States)

    Sommeria, Joël

    2017-11-01

    In February 1851, Léon Foucault published in the Comptes rendus his famous pendulum experiment performed at the "Observatoire de Paris". This ended two centuries of quest for an experimental demonstration of Earth rotation. One month later, the experiment was reproduced at larger scale in the Panthéon and, as early as the summer of 1851, it was being repeated in many places across the world. The next year, Foucault invented the gyroscope to get a still more direct proof of Earth rotation. The theory relied on the masterpiece treatise of Laplace on celestial mechanics, published in 1805, which already contained the mathematical expression of the force that would be discovered by Gustave Coriolis 30 years later. The idea of a fictitious inertial force proposed by Coriolis prevailed by the end of 19th century, as it was conceptually simpler than Laplace's approach. The full theory of the Foucault pendulum, taking into account its unavoidable imperfections, was not obtained until three decades later by Kamerlingh Onnes, the future discoverer of liquid helium and superconductivity. Today, Foucault's exceptional creativity is still a source of inspiration for research and the promotion of science through experimental proofs widely available to the public.

  5. Foucault Pendulum without Driving

    Science.gov (United States)

    Yamashita, Yoshifumi

    2016-06-01

    Foucault pendulums are two-dimensional harmonic oscillators to which the Coriolis force is applied. The Foucault parameter ΩF is the ideal rate of rotation of the plane of oscillation due to the Coriolis force. Kamerlingh Onnes pointed out that the actual behavior of Foucault pendulums can be understood only by taking into account the unavoidable mechanical asymmetry, i.e., the difference between the frequency in the X-direction and that in the Y-direction, which is called the asymmetry parameter δ. Our equations of motion for Foucault pendulums are linear and their solutions are easily obtained. We are interested in slowly varying rotations of the plane of oscillation, where the angle of rotation is denoted by φ. The motion of the bob consists of rapid simple oscillations and the slow rotations mentioned above. Eliminating the rapid oscillations, we obtain an analytic expression for tan 2φ, which is a periodic function with period π /√{Ω F2 + δ 2} . The graphs of the rotation φ versus time t have two distinct appearances. Under the condition ΩF ≥ δ|cos(2θ)| (θ is the initial value of φ), φ decreases monotonically, which is the behavior expected for Foucault pendulums. Otherwise φ repeatedly increases and decreases, which is the behavior of pendulums describing Lissajous figures. The vertical component of angular momentum is also calculated analytically.

  6. Baseline for food waste generation - A case study in Universiti Tun Hussein Onn Malaysia cafeterias

    Science.gov (United States)

    Alias, A. R.; Mokhlis, N. A. Mohd; Zainun, N. Y.

    2017-11-01

    Increasing population and economy status have contributed to the increasing volume of solid wastes produced in Malaysia and it creates problems on the existing solid waste management system. Ineffective waste management system was one of the issues that often discussed. The purpose of this study was to suggest the best method for managing food waste in Universiti Tun Hussein Onn Malaysia (UTHM) cafeterias. The scope of the study was to identify the type and quantity of waste generated in each cafeteria. The study area was carried out at six cafeteria in UTHM including residential college cafeteria which are Tun Dr. Ismail (TDI), Tun Fatimah (TF) and Tun Syed Nasir (TSN), G3’s cafeteria, Arked, and Dr. Munie’s cafeteria located at the Faculty of Civil and Environmental Engineering (FKAAS). In this study, food waste was quantified in unit of kilogram (kg). Results of the study showed that total food waste in selected UTHM’s cafeterias was 6197.5 kg for two months. Food waste generated in G3’s cafeteria was the highest value with 1823.5 kg among another cafeteria. This is due to strategic location for students and staff to take meals, the variety of food sold and reasonable price were major factors of generating food waste. Meanwhile, the Dr. Munie's Cafeteria located in FKAAS recorded the least total production of food waste as staffs and students take their meals at others cafeterias. Through literature review, there are list of methods on waste management were identified and composting method was suggested for food waste management in UTHM since the waste was produce in very large quantity.

  7. Level of Bus Performance Based On the Relationship Between Distance and Travel Time of Universiti Tun Hussein Onn Malaysia (UTHM Bus Services

    Directory of Open Access Journals (Sweden)

    Prasetijo Joewono

    2017-01-01

    Full Text Available UTHM bus service is an important transport mode for most students at Universiti Tun Hussein Onn because it such primary public vehicle to support students movements around the campus, within and outside student apartments. This service is often associated with the quality of service in terms of time, stops and comforts. Therefore, this following study is focused on investigation on several UTHM bas routes which was based on bas operations such as distance and travel time/travel distance that would determine the level of service provided. Primary data were collected mainly to obtain information relate to speed, bas position, time movement/circulations of bus and time headway. These were obtained by installing GPS-Slute Gear i-trail along bus travels. In addition, additional data were collected by exploring previous studies regarding to the bus services such as Highway Capacity Manual (HCM 2010. The approach used was based on assessment of progress used to determine the level of quest service and such obstacle frequently occurs with results on bus delays, volume of unequal that can be overcome according to the assessments that have been provided.

  8. Oncology Nurse Navigation: Results of the 2016 Role Delineation Study.

    Science.gov (United States)

    Lubejko, Barbara G; Bellfield, Sonia; Kahn, Elisa; Lee, Carrie; Peterson, Nicole; Rose, Traudi; Murphy, Cynthia Miller; McCorkle, Michele

    2017-02-01

    In 2011, an oncology nurse navigator (ONN) role delineation survey (RDS) was conducted by the Oncology Nursing Society (ONS) when the role was relatively new to oncology. Results did not demonstrate a unique skill set for the ONN; however, since then, the role has expanded. ONS and the Oncology Nursing Certification Corporation partnered in 2016 to complete an RDS of ONNs to redefine the role and determine the need for an ONN certification examination. A structured RDS was conducted using a formal consensus-building process. A survey was developed and released to examine the specific tasks, knowledge, and skills for the ONN as well as to determine which role possesses more responsibility for the tasks. The ONN role is evolving, and more was learned about its key tasks, including differences in the responsibilities of the ONN and the clinical or staff nurse. However, the RDS did not find an adequate difference in the knowledge required by the ONN and the clinical or staff nurse to support the need for a separate ONN certification.

  9. Woman Friendly Mosque, Features and Facilities: A Case Study on Masjid Sultan Ibrahim, Universiti Tun Hussein Onn Malaysia

    Science.gov (United States)

    Suratkon, A.; Salam, N. N. Abd; Rahmat, M. H.; Arhan, A. S. Mohd; Wahab, I. Abd; Ghaffar, S. A.

    2017-12-01

    Mosque has gone through a long and complex development throughout the Muslim’s history which involved the interrelation between its functions and its design. During the process, many aspects of its design were reconfigured including the female facilities in the mosque. In Malaysia, there is a progressive movement to transform the roles and functions of the mosque from exclusive place for prayers and seclusion to a community center. Nevertheless, there are still a numbers of muslim women voices their frustration towards the facilities provided to them in the mosque. Indirectly, this has discourage participation of women in the mosque. The objective of this paper is to investigate the opinions and needs of muslim women in a mosque and to propose appropriate features and facilities for a female-friendly mosque. The study explored through a field observation and a set of questionnaires, which involves a case study of Masjid Sultan Ibrahim in Universiti Tun Hussein Onn Malaysia. The field observation was carried out to analyze its current conditions, facilities, design and features. On the other hand, a set of questionnaire was distributed to the women visitors who were mainly students and staffs as to get their insight on this issue. From the field observation and the survey distributed, it was clearly seen that the facilities provided for the female users were still not up to the standard of a ‘women-friendly mosque’. Some proposals were provided to improve on the current condition and to be taken into consideration by future designers in designing a mosque.

  10. DMPD: Activation of lymphokine genes in T cells: role of cis-acting DNA elements thatrespond to T cell activation signals. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available thatrespond to T cell activation signals. Arai N, Naito Y, Watanabe M, Masuda ES, Yamaguchi-Iwai Y, Tsuboi A, Heike T,Matsud... in T cells: role of cis-acting DNA elements thatrespond to T cell activation signals. Authors Arai N, Naito Y, Watanabe M, Masud...a ES, Yamaguchi-Iwai Y, Tsuboi A, Heike T,Matsuda I, Yokota

  11. Journal of Chemical Sciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    In the presence of catechol (H2cat) and benzohydroxamic acid (H2bha), oxovanadium (IV) complexes, [VO (acac)(ONN)] gave mixed-chelate oxovanadium(V) complexes [VO(cat)(ONN)] and [VO(bha)(ONN)] respectively. These complexes are not very stable in solution and slowly convert to the corresponding dioxo species ...

  12. Epidemic O'Nyong-Nyong fever in southcentral Uganda, 1996-1997: entomologic studies in Bbaale village, Rakai District.

    Science.gov (United States)

    Lutwama, J J; Kayondo, J; Savage, H M; Burkot, T R; Miller, B R

    1999-07-01

    Entomologic studies were conducted between January 27 and February 2, 1997, in Bbaale village in southcentral Uganda during an o'nyong-nyong (ONN) virus epidemic, which began in mid 1996 and continued into 1997. The objectives were to confirm the role of anophelines in ONN virus transmission and to examine other mosquito species as epidemic vectors of ONN virus. Of 10,050 mosquitoes collected using light traps and pyrethrum knockdown sprays, Anopheles (Cellia) funestus Giles was presumed to be the principal vector because it was the most abundant mosquito species from which a strain of ONN virus was isolated. This virus was isolated for the first time from a culicine species, Mansonia (Mansonioides) uniformis Theobald. Bwamba virus and Nyando virus were also isolated from An. funestus.

  13. Archtecture According to Children : Tree House World / Pille Runnel

    Index Scriptorium Estoniae

    Runnel, Pille, 1974-

    2015-01-01

    Linnalaste ja -noorte teemalisest näitusest "Niisama linnas" ("Chilling Around the Town") Eesti Rahva Muuseumis 16. mai 2014-11.01 2015. Teostuse on leidnud ka onnikavandite võistlusele auto-onni idee saatnud 10-aastase poisi Artur Soo unistus - "Onn ratastel OÜ" - vanasse veoautosse ehitatud onn

  14. Comparison Between The Characteristics Of Wind Power ...

    African Journals Online (AJOL)

    Data on wind speed and global solar radiation over the period 1985 – 1999 for Onne obtained from the International Institute of Tropical Agriculture (IITA) stationed at Onne, Nigeria have been compiled and evaluated, to determine the wind power which is compared with the global solar radiation energies. Monthly and ...

  15. Methodische Anregungen zu Literarischen Gesprächen in der Sekundarstufe

    OpenAIRE

    Spinner, Kaspar H.

    2014-01-01

    Methodische Anregungen zu Literarischen Gesprächen in der Sekundarstufe. - In: Standardorientierung im Lese- und Literaturunterricht der Sekundarstufe I / Cornelia Rosebrock ; Heike Wirthwein. - Baltmannsweiler : Schneider-Verl. Hohengehren, 2014. - S. 126-132

  16. Modeling Nitrogen Dynamics in a Waste Stabilization Pond System Using Flexible Modeling Environment with MCMC.

    Science.gov (United States)

    Mukhtar, Hussnain; Lin, Yu-Pin; Shipin, Oleg V; Petway, Joy R

    2017-07-12

    This study presents an approach for obtaining realization sets of parameters for nitrogen removal in a pilot-scale waste stabilization pond (WSP) system. The proposed approach was designed for optimal parameterization, local sensitivity analysis, and global uncertainty analysis of a dynamic simulation model for the WSP by using the R software package Flexible Modeling Environment (R-FME) with the Markov chain Monte Carlo (MCMC) method. Additionally, generalized likelihood uncertainty estimation (GLUE) was integrated into the FME to evaluate the major parameters that affect the simulation outputs in the study WSP. Comprehensive modeling analysis was used to simulate and assess nine parameters and concentrations of ON-N, NH₃-N and NO₃-N. Results indicate that the integrated FME-GLUE-based model, with good Nash-Sutcliffe coefficients (0.53-0.69) and correlation coefficients (0.76-0.83), successfully simulates the concentrations of ON-N, NH₃-N and NO₃-N. Moreover, the Arrhenius constant was the only parameter sensitive to model performances of ON-N and NH₃-N simulations. However, Nitrosomonas growth rate, the denitrification constant, and the maximum growth rate at 20 °C were sensitive to ON-N and NO₃-N simulation, which was measured using global sensitivity.

  17. "Nägemus" EKA galeriis

    Index Scriptorium Estoniae

    2003-01-01

    Tartu Kõrgema Kunstikooli tekstiilikunsti osakonna gobeläänide näitus "Nägemus". Osalejad: Triinu Pungits, Signe Vilde, Jaanika Terasmaa, Leeda Ots, Gerli Aimla, Merike Uiga, Irina Vizner-Laur, Mari Vaaderpall, Heike Sepp

  18. Development of field-based real-time reverse transcription-polymerase chain reaction assays for detection of Chikungunya and O'nyong-nyong viruses in mosquitoes.

    Science.gov (United States)

    Smith, Darci R; Lee, John S; Jahrling, Jordan; Kulesh, David A; Turell, Michael J; Groebner, Jennifer L; O'Guinn, Monica L

    2009-10-01

    Chikungunya (CHIK) and O'nyong-nyong (ONN) are important emerging arthropod-borne diseases. Molecular diagnosis of these two viruses in mosquitoes has not been evaluated, and the effects of extraneous mosquito tissue on assay performance have not been tested. Additionally, no real-time reverse transcription-polymerase chain reaction (RT-PCR) assay exists for detecting ONN virus (ONNV) RNA. We describe the development of sensitive and specific real-time RT-PCR assays for detecting CHIK and ONN viral RNA in mosquitoes, which have application for field use. In addition, we compared three methods for primer/probe design for assay development by evaluating their sensitivity and specificity. This comparison resulted in development of virus-specific assays that could detect less than one plaque-forming unit equivalent of each of the viruses in mosquitoes. The use of these assays will aid in arthropod-borne disease surveillance and in the control of the associated diseases.

  19. Ruthenium complexes containing 2-(2-nitrosoaryl)pyridine: structural, spectroscopic, and theoretical studies.

    Science.gov (United States)

    Chan, Siu-Chung; Cheung, Ho-Yuen; Wong, Chun-Yuen

    2011-11-21

    Ruthenium complexes containing 2-(2-nitrosoaryl)pyridine (ON(^)N) and tetradentate thioether 1,4,8,11-tetrathiacyclotetradecane ([14]aneS4), [Ru(ON(^)N)([14]aneS4)](2+) [ON(^)N = 2-(2-nitrosophenyl)pyridine (2a), 10-nitrosobenzo[h]quinoline (2b), 2-(2-nitroso-4-methylphenyl)pyridine, (2c), 2-(2-nitrosophenyl)-5-(trifluoromethyl)pyridine (2d)] and analogues with the 1,4,7-trithiacyclononane ([9]aneS3)/tert-butylisocyanide ligand set, [Ru(ON(^)N)([9]aneS3)(C≡N(t)Bu)](2+) (4a and 4b), have been prepared by insertion of a nitrosonium ion (NO(+)) into the Ru-aryl bond of cyclometalated ruthenium(II) complexes. The molecular structures of the ON(^)N-ligated complexes 2a and 2b reveal that (i) the ON(^)N ligands behave as bidentate chelates via the two N atoms and the bite angles are 86.84(18)-87.83(16)° and (ii) the Ru-N(NO) and N-O distances are 1.942(5)-1.948(4) and 1.235(6)-1.244(5) Å, respectively. The Ru-N(NO) and N-O distances, together with ν(N═O), suggest that the coordinated ON(^)N ligands in this work are neutral moiety (ArNO)(0) rather than monoanionic radical (ArNO)(•-) or dianion (ArNO)(2-) species. The nitrosated complexes 2a-2d show moderately intense absorptions centered at 463-484 nm [ε(max) = (5-6) × 10(3) dm(3) mol(-1) cm(-1)] and a clearly discriminable absorption shoulder around 620 nm (ε(max) = (6-9) × 10(2) dm(3) mol(-1) cm(-1)), which tails up to 800 nm. These visible absorptions are assigned as a mixing of d(Ru) → ON(^)N metal-to-ligand charge-transfer and ON(^)N intraligand transitions on the basis of time-dependent density functional theory (TD-DFT) calculations. The first reduction couples of the nitrosated complexes range from -0.53 to -0.62 V vs Cp(2)Fe(+/0), which are 1.1-1.2 V less negative than that for [Ru(bpy)([14]aneS4)](2+) (bpy = 2,2'-bipyridine). Both electrochemical data and DFT calculations suggest that the lowest unoccupied molecular orbitals of the nitrosated complexes are ON(^)N-centered. Natural population

  20. Near zero reflection by nanostructured anti-reflection coating design for Si substrates

    Science.gov (United States)

    Al-Fandi, Mohamed; Makableh, Yahia F.; Khasawneh, Mohammad; Rabady, Rabi

    2018-05-01

    The nanostructure design of near zero reflection coating for Si substrates by using ZnO Nanoneedles (ZnONN) is performed and optimized for the visible spectral range. The design investigates the ZnONN tip to body ratio effect on the anti-reflection coating properties. Different tip to body ratios are used on Si substrates. Around zero reflection is achieved by the Nanoneedles structure design presented in this work, leading to minimal reflection losses from the Si surface. The current design evolves a solution to optical losses and surface contamination effects associated with Si solar cells.

  1. Four Papers on Contemporary Software Design Strategies for Statistical Methodologists

    OpenAIRE

    Carey, Vincent; Cook, Dianne

    2014-01-01

    Software design impacts much of statistical analysis and, as technology changes, dramatically so in recent years, it is exciting to learn how statistical software is adapting and changing. This leads to the collection of papers published here, written by John Chambers, Duncan Temple Lang, Michael Lawrence, Martin Morgan, Yihui Xie, Heike Hofmann and Xiaoyue Cheng.

  2. Agro-Science Journal of Tropical Agriculture, Food, Environment ...

    African Journals Online (AJOL)

    OLUWOLE AKINNAGBE

    2009-09-03

    Sep 3, 2009 ... Agro-Science Journal of Tropical Agriculture, Food, Environment and Extension. Volume 8 ... 3 International Institute of Tropical Agriculture, High Rainfall Station,. Onne, Rivers State ...... Biosciences proceedings. 6: 444-454.

  3. Fertilizer procurement, distribution and subsidy policies in Nigeria ...

    African Journals Online (AJOL)

    Open Access DOWNLOAD FULL TEXT ... subsidy at source, and subsidy at source including transportation subsidy to delivery points. It was recommended that the National Fertilizer Company of Nigeria (NAFCON) Onne, Port Harcourt should ...

  4. Story of Superconductivity: A Serendipitous Discovery

    Indian Academy of Sciences (India)

    , offered a glimmerof hope to make this dream possible. It was a discoverytotally unexpected at that time, and we owe this discovery tothe painstaking andmethodical investigations of Onnes – firstto produce very low temperatures, and then ...

  5. Correlation between MRI results and intraoperative findings in patients with silicone breast implants

    OpenAIRE

    Lindenblatt, Nicole; El-Rabadi, Karem; Helbich, Thomas H; Czembirek, Heinrich; Deutinger, Maria; Benditte-Klepetko, Heike

    2014-01-01

    Nicole Lindenblatt,1 Karem El-Rabadi,2 Thomas H Helbich,2 Heinrich Czembirek,3 Maria Deutinger,4 Heike Benditte-Klepetko5 1Division of Plastic and Hand Surgery, Department of Surgery, University Hospital Zurich, Zurich, Switzerland; 2Department of Biomedical Imaging and Image-guided Therapy, Division of Molecular and Gender Imaging, Medical University of Vienna - General Hospital Vienna, 3Department of Radiology, Hospital Wiener Privatklinik, 4Department of Plastic and Reconstructive Surgery,...

  6. Anomalous temperature dependence of the Seebeck coefficient for the substitutionally-disordered hopping conductors

    International Nuclear Information System (INIS)

    Raffaelle, R.P.; Parris, P.E.; Anderson, H.U.; Sparlin, D.M.

    1991-01-01

    Thermoelectric power measurements are presented for the (La,Sr)(Cr,Mn)O 3 series. The nonlinear temperature dependence of the Seebeck coefficient is analyzed in terms of a random distribution of energetically equivalent hopping sites. The limitations of Heikes' formula, which has been traditionally used to calculate small polaron carrier densities in these systems, are discussed. Recent theoretical developments in the interpretation of Seebeck measurements in substitutionally-disordered high-temperature hopping conductors are reviewed

  7. Y. Laberge on Raphael-Hernadez and Steen’s AfroAsian encounters: Culture, History, Politics.

    Directory of Open Access Journals (Sweden)

    2008-12-01

    Full Text Available Heike Raphael-Hernadez and Shannon Steen,  Eds. AfroAsian encounters: Culture, History, Politics. New York: New York University Press, 2006.  xxiii + 342 p. An overlooked, interdisciplinary, often innovative book, Afroasian encounters: Culture, History, Politics offers a collection of seventeen new essays related to the African-Asian intersections, cosmopolitanism and cross-cultural theories. In terms of emerging disciplines, we already had Atlantic studies (or "Trans-Atlantic studies", an i...

  8. Taira no Atsumori or melancholic ahimshā as “cold steel”

    Directory of Open Access Journals (Sweden)

    Fernando Cid Lucas

    2012-05-01

    Full Text Available In this article we will examine the personality of one of the most important characters in Heike monogatari, the young samurai Taira no Atsumori, and his view of the war and the trade of warrior. Likewise, we will focus on how this historic character is portrayed in some Noh plays, in which his tormented soul refused epics chants and honors achieved in the battlefield, in the search of its eternal rest through religious path.

  9. Anti-nutrients and heavy metals in some new plantain and banana ...

    African Journals Online (AJOL)

    Plantain and banana flour are important raw material in the baking and confectionery industry, and complementary food formulation. Five new plantain and banana hybrids developed by the International Institute of Tropical Agriculture (IITA) at Highrainfall Station, Onne, Nigeria were screened for certain anti-nutritional ...

  10. Progress In Breeding Diploid Genetic Stocks Of Banana With ...

    African Journals Online (AJOL)

    Selected genetically related diploid Musa materials of the base, first, and second generations of the breeding programme in the International Institute of Tropical Agriculture (IITA) high rainfall station, Onne were evaluated for black Sigatoka resistance and agronomic performance. This was done in order to assess the ...

  11. Effects of dissolution medium, pH and temperature on the in vitro ...

    African Journals Online (AJOL)

    Similarly, disssolution studies were carrtied out at varying temperatures to determine the effect of temperature onn release and disintegration. Results obtained showed that the tablets possessed officailly acceptable hardness, uniformity of weight, and absolute drug content, but a high friablity. The drugs were released faster ...

  12. Indium vacancy induced d0 ferromagnetism in Li-doped In2O3 nanoparticles

    Science.gov (United States)

    Cao, Haiming; Xing, Pengfei; Zhou, Wei; Yao, Dongsheng; Wu, Ping

    2018-04-01

    Li-doped In2O3 nanoparticles with room temperature d0 ferromagnetism were prepared by a sol-gel method. X-ray diffraction, X-ray photoelectron spectroscopy and photoluminescence were carried out to investigate the effects of Li incorporation on the lattice defects. As the content of Li increases, non-monotonic changes in shifts of XRD peak (2 2 2) and the intensity ratios of indium vacancies related photoluminescence peak (PII) with respect to oxygen vacancies related peak (PI) are observed. Results show that at low doping level (≤2 at.%) Li prefers to occupy In sites, while with further doping the interstitial sites are more favorable for Li. Combined with the consistent non-monotonic change in saturation magnetization, we think that indium vacancies resulting from Li-doping play an important role in inducing d0 ferromagnetism in our Li-doped In2O3 nanoparticles, and the FM coupling is mainly mediated by the LiIn-ONN-VIn-ONN-LiIn chains.

  13. H2O2 induces a transient multi-phase cell cycle arrest in mouse fibroblasts through modulating cyclin D and p21Cip1 expression

    NARCIS (Netherlands)

    Barnouin, K.; Dubuisson, M.L.; Child, E.S.; Fernandez de Mattos, S.; Glassford, J.; Medema, R.H.; Mann, D.J.; Lam, E.W.-F.

    2002-01-01

    From the h CRC Laboratories and the Section of Cancer Cell Biology, Imperial College School of Medicine at Hammersmith Hospital, Du Cane Road, London W12 ONN, United Kingdom, the e Ludwig Institute for Cancer Research and Section of Virology and Cell Biology, Imperial College School of Medicine at

  14. Comparison Of Diffuse Solar Radiation Models Using Data For ...

    African Journals Online (AJOL)

    Measurements of global solar radiation and sunshine duration data during the period from 1984 to 1999 were supplied by IITA (International Institute of Tropical Agriculture) at Onne. The data were used to establish empirical relationships that would connect the daily monthly average diffuse irradiation with both relative ...

  15. Effects of Leadership Styles in Technical and Vocational Students, UTHM

    Science.gov (United States)

    Razak, Nur Afifah Binti Abdul; Hamidon, Nur Izeanty Binti

    2015-01-01

    Effective leadership helps our nation through times become a developed country. This study was undertaken to investigate the effects of leadership style among students in Technical and Vocational at University Tun Hussein Onn Malaysia. Descriptive study carried out to evaluate student leadership. The study sample consisted of 319 Technical and…

  16. Perception of Leadership in Electrical Engineering Students, UTHM

    Science.gov (United States)

    Saari, Farrah Atikah Binti; Ghani, Nor Aslasiah Binti

    2015-01-01

    Demand for graduates with leadership skills more in priority to meet the needs of human resources. Hence, this study was undertaken to investigate the level of leadership skills among students in Electrical Engineering at University Tun Hussein Onn Malaysia. Descriptive study carried out to evaluate student leadership. The study sample consisted…

  17. Browse Title Index

    African Journals Online (AJOL)

    Items 1 - 31 of 31 ... Vol 1 (2011), Human errors and system variability in safety investigations of maritime casualties: an expression of systemic concerns, Abstract. KT Ghirxi. Vol 4 (2015), Impact of Onne Free Zone on Supply Chain Performance of Registered Oil and Gas Companies, Abstract. SD Ebidunmi. Vol 4 (2015) ...

  18. Malaysia’s Experience in War Against Communist Insurgency and Its Relevance to the Present Situation in Iraq

    Science.gov (United States)

    2005-01-01

    Najib Tun Abdul Razak , Minister of Defense of Malaysia, at the national conference on “Rethinking Southeast Asian Regional Security,” April 29, 2003...the 1970s enabled the administration of Tun Abdul Razak and later Tun Hussein Onn who took over on the death of Tun Razak in 1976, to make

  19. 227 Données préliminaires sur la distribution spatio-temporelle des ...

    African Journals Online (AJOL)

    Niamien

    , in the district of Plateau in. Abidjan ... réservoir de nombreux virus, est soupçonnée d'héberger le virus de la fièvre hémorragique mortelle d'Ebola [17]. Enfin, la chauve-souris à tête de marteau utilise saisonnièrement ce site urbain pour sa.

  20. Impact Of Deforestation On Ecosystem: A Case Study Of The Fresh ...

    African Journals Online (AJOL)

    This paper takes a look at the impact of unregulated and uncontrolled removal of vegetation due to human economic activities in Onne freshwater swamp forest. In this study, the mean area of land covered by flood waters was 0.55 ha for the deforested land compared to the non-deforested land which had a mean of 0.25 ha.

  1. Author Details

    African Journals Online (AJOL)

    Omokhua, GE. Vol 8, No 2 (2008) - Articles Impact Of Human Activities On Ecosystem In Rivers State, Nigeria Abstract PDF · Vol 8, No 2 (2008) - Articles Impact Of Deforestation On Ecosystem: A Case Study Of The Fresh Water Swamp Forest In Onne, Niger Delta Region, Nigeria Abstract PDF · Vol 12, No 1 (2012) - Articles

  2. The AMC 󈨎 Mobility Model

    Science.gov (United States)

    1975-05-01

    M ot.atacla OnnU Strata« iBdldil t’. MMt < •allr/l fanäii aM im >. MMt 1 Uck * for im ■ atar Dap tu 0*4 vanicia rioattai...code numbers. V-2 ’■’- I run mmt Assignment of specific geometric properties and physical dimensions to the linear features can be done by a

  3. Utility of A Satellite Vehicle For Reconnaissance.

    Science.gov (United States)

    1951-04-01

    8217Cents& Oblique oblique frame$~ below Wowe.. sc h malic 01 to passing - ~ power9 th~rough 0011’s E ~nca r Sec enIA0onn, ~1 VOO 6 Escapldmle"’ ElectricO ...Fig. 26-Gyro precession require the use of a computer of the type associated with auto -pilots. Such a mechanism should not be difficult to develop but

  4. Thermal characteristics of a residential house in a new township in Johor Bahru

    Science.gov (United States)

    Lee, Y. Y.; Lee, Y. H.; Mohammad, S.; Shek, P. N.; Ma, C. K.

    2017-11-01

    As one of the densest population occurred in Johor Bahru, development of a new township become necessary in order to cater this growth. Rapid urbanization is a factor of degradation of environmental quality which may increase surrounded temperature through urban heat island (UHI) phenomena. Therefore, this paper is investigating thermal comfort for a new township, Bandar Dato Onn in Johor Bahru, in order to understand the thermal characteristics of a new township and for further mitigation of UHI phenomena. Surface temperature, ambient temperature and relative humidity have been collected from a terrace house of Bandar Dato Onn. Thermal characteristics with the features of time lag and decrement factors were discussed based on the collected data. The time lag of 5 to 8 hours and the decrement factors of 0.02 to 0.06 were recorded during a five-day measurement. It was concluded that human thermal comfort may not be achieved as the heating, ventilation and air conditioning (HVAC) system needed for bedroom and living room. Passive energy design is suggested to be included in the house in order to have human thermal comfort while reducing the electricity consumption towards sustainable future.

  5. Comment utiliser les TIC pour s'attaquer aux problèmes de santé ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    On appelle souvent cybersanté l'utilisation des technologies de l'information et de la communication (TIC) dans les systèmes de santé. L'importance accordée par le CRDI à la fois au renforcement des capacités et à l'influence exercée sur les politiques façonne depuis plus de dix ans les divers projets de recherche en ...

  6. Solar-TEP - Development of materials for thermo-electric power generators; SOLAR-TEP - Materialentwicklung fuer solarthermoelektrische Stromerzeuger - Schlussbericht 2008

    Energy Technology Data Exchange (ETDEWEB)

    Robert, R.; Weidenkaff, A.

    2008-06-15

    This final report for the Swiss Federal Office of Energy (SFOE) reports on the development of materials for thermo-electric power generators. Cobaltate phases are discussed as being suitable materials for thermoelectric applications at high temperatures. These potential thermoelectric materials are characterised with respect to their crystal structure, microstructure, composition, and thermal stability. The Seebeck coefficient, thermal conductivity and electrical resistivity of polycrystalline cobaltates with perovskite-type and layered-cobaltite structure are evaluated for a wide temperature range. The large Seebeck coefficient exhibited by both perovskite-type and layered cobaltite phases is analysed using the Heikes formula. The work is illustrated with results obtained for various materials in graphical form.

  7. Case series

    African Journals Online (AJOL)

    abp

    22 août 2013 ... Le lien avec le virus du papillome humain (VPH), quoique fortement soupçonné, n'est pas confirmé [3]. D'un point de vue clinique, le cancer de la vulve se présente sous forme d'une masse, d'une plaque, d'un ulcère, d'un nodule, du prurit, des saignements et des pertes vaginales post ménopausiques, ...

  8. Genotype-by-Environment Interaction and Testing Environments for Plantain and Banana (Musa spp. L. Breeding in West Africa

    Directory of Open Access Journals (Sweden)

    Ortiz, R.

    1999-01-01

    Full Text Available With reduced budgets allocated for international agricultural research, site rationalisation had become an important issue to consider when carrying out multilocational testing of promising selections. The aim of this paper was to determine the importance of the genotype-by-environment interaction in multilocational trials of plantains and bananas (Musa spp. L. in selected sites of West Africa comprising the humid forest and the forest-savanna transition zones. A sample of plantain-banana hybrids, plantain landraces, exotic banana cultivars and diploid parental banana accessions were evaluated in three locations : Mbalmayo and Onne (humid forest and Ibadan (forest-savanna transition. The experimental results of our research suggested that multilocational testing is more profitable than single site evaluation over several years in the Musa breeding station. Furthermore, based on correlated responses across environments for yield potential, we suggest that one of the selection sites in the humid forest (i. e., Mbalmayo be dropped since selections in one site (Onne may be well adapted to the other location in the same agroecozone. Conversely, the relatively poor performance of most genotypes in dry environments (e. g. Ibadan reinforces the importance of early testing across a wide range of environments. In this way selections with broad or specific adaptation may be identified for further release to targeted farmers.

  9. Potential reduction of energy consumption in public university library

    Science.gov (United States)

    Noranai, Z.; Azman, ADF

    2017-09-01

    Efficient electrical energy usage has been recognized as one of the important factor to reduce cost of electrical energy consumption. Various parties have been emphasized about the importance of using electrical energy efficiently. Inefficient usage of electrical energy usage lead to biggest factor increasing of administration cost in Universiti Tun Hussein Onn Malaysia. With this in view, a project the investigate potential reduction electrical energy consumption in Universiti Tun Hussein Onn Malaysia was carried out. In this project, a case study involving electrical energy consumption of Perpustakaan Tunku Tun Aminah was conducted. The scopes of this project are to identify energy consumption in selected building and to find the factors that contributing to wastage of electrical energy. The MS1525:2001, Malaysian Standard - Code of practice on energy efficiency and use of renewable energy for non-residential buildings was used as reference. From the result, 4 saving measure had been proposed which is change type of the lamp, install sensor, decrease the number of lamp and improve shading coefficient on glass. This saving measure is suggested to improve the efficiency of electrical energy consumption. Improve of human behaviour toward saving energy measure can reduce 10% from the total of saving cost while on building technical measure can reduce 90% from total saving cost.

  10. Dynamics on the group manifolds and path integral

    International Nuclear Information System (INIS)

    Marinov, M.S.; Terentyev, M.V.

    1979-01-01

    Classical and quantum dynamics onn the compact simple Lie group and on the sphere of arbitrary dimensionality are considered. The accuracy of the semiclassical approximation for Green functions is discussed. Various path integral representations of the Green functions are presented. The special features of these representations due to the compactness and curvature are analysed. Basic results of the theory of Lie algebras and Lie groups used in the main text are presented

  11. Assessment of indoor air quality in comparison using air conditioning and fan system in printing premise

    OpenAIRE

    Ramlan Nazirah; Nurhalimatul Husna Ahmad Siti; Aminuddin Eeydzah; Abdul Hamid Hazrul; Khalijah Yaman Siti; Halid Abdullah Abd

    2017-01-01

    Printers contribute to various emissions consist with chemical contaminants. High concentration of the particulate matter can cause serious health problems. This study focuses on the indoor air quality in printing premise unit in Universiti Tun Hussein Onn, Malaysia. Field testing involving air sampling methods were taken from 900 hours to 1600 hours, for every 30 minutes using physical measurement which is Multi-Channel Air Quality Monitor (YESAIR), E-Sampler and Ozone Meter. Air sampling wa...

  12. Maailma suurim pank komistab ühelt skandaalilt teise otsa / Heike Buchter, Robert von Heusinger

    Index Scriptorium Estoniae

    Buchter, Heike

    2005-01-01

    Maailma suurima panga Citigroup mainet vähendavad kokkupõrked valitsuste, seadusekaitsjate ja järelevalveorganitega. Euroopa riigivõlakirjade kurssidega manipuleerimiselt teenis pank 17 miljonit eurot kasumit. Lisad: Citigroup; Hansa omanik

  13. Springer Publishing Booth | 4-5 October

    CERN Multimedia

    2016-01-01

    In the spirit of continuation of the CERN Book Fairs of the past years, Springer Nature will be present with a book and journal booth on October 4th and 5th, located as usual in the foyer of the Main Building. Some of the latest titles in particle physics and related fields will be on sale.   You are cordially invited to come to the booth to meet Heike Klingebiel (Licensing Manager / Library Sales), Hisako Niko (Publishing Editor) and Christian Caron (Publishing Editor). In particular, information about the new Nano database – nanomaterial and device profiles from high-impact journals and patents, manually abstracted, curated and updated by nanotechnology experts – will be available. The database is accessible here: http://nano.nature.com/. 

  14. International Neural Network Society Annual Meeting (1994) Held in San Diego, California on 5-9 June 1994. Volume 4

    Science.gov (United States)

    1994-06-09

    Tuberculosis + Fever - Tuberculosis 1289W M4460 E201Ol F93983 001886 The date coding takes the internal structure of data codification into account...N 1(X+ 1,y1,Z1,N I tN l ) 2Funm dtNi - --tet+ NW N -- aN1 ONN r IV- 126 time.~ ~ ~ ~ Beas 2>p yasmto ,teei oitrcino antcfed ewe , adN ae And the...Cibernetica *Laboratorio de Biofisica Departamento de Fisica, Facultad de Ciencias, Mixico National University (UNAM), Ciudad Universitaria, Mexico , D.F

  15. Defense Against Threat. Threat Recognition and Analysis Project

    Science.gov (United States)

    1975-09-01

    ONN; ND PHI COiiBAT SIN TAI); COIi^UNIST INSURGENCY, 32, TIN FOOD 18, hANUFACTURES 18, 18, TlliBER 17, SIN 22, MALAYSIA l.AL 820 6 75...FIN:GEN MONTI EL; DEF:COL SANCHEZ; AREA:0,053,938; POP:001,990, 000; GNP:0,000,730,000, 000; GNPPC:0366; BOR:HüN; BOR:COS; ÜRG:UN0...MOZ FUR LISBON,POR COMMUNIST PARTY DEMANDS CENSORSHIP OF FOREIGN PRESS,THE TWO PAKTIES OPPOSING THE AFM TOTALLY COLLAPSE LEAVING THE ARMED FORCES

  16. Agent-oriented software engineering reflections on architectures, methodologies, languages, and frameworks

    CERN Document Server

    Shehory, Onn

    2014-01-01

    With this book, Onn Shehory and Arnon Sturm, together with further contributors, introduce the reader to various facets of agent-oriented software engineering (AOSE). They provide a selected collection of state-of-the-art findings, which combines research from information systems, artificial intelligence, distributed systems and software engineering and covers essential development aspects of agent-based systems. The book chapters are organized into five parts. The first part introduces the AOSE domain in general, including introduction to agents and the peculiarities of software engineerin

  17. NEW LUMINOUS ON SPECTRA FROM THE GALACTIC O-STAR SPECTROSCOPIC SURVEY

    Energy Technology Data Exchange (ETDEWEB)

    Walborn, Nolan R. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Morrell, Nidia I. [Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile); Barbá, Rodolfo H. [Departamento de Física y Astronomía, Universidad de La Serena, Cisternas 1200 Norte, La Serena (Chile); Sota, Alfredo, E-mail: walborn@stsci.edu, E-mail: nmorrell@lco.cl, E-mail: rbarba@dfuls.cl, E-mail: sota@iaa.es [Instituto de Astrofísica de Andalucía—CSIC, Glorieta de la Astronomía s/n, E-18008 Granada (Spain)

    2016-04-15

    Two new ON supergiant spectra (bringing the total known to seven) and one new ONn giant (total of this class now eight) are presented; they have been discovered by the Galactic O-Star Spectroscopic Survey. These rare objects represent extremes in the mixing of CNO-cycled material to the surfaces of evolved, late-O stars, by uncertain mechanisms in the first category but likely by rotation in the second. The two supergiants are at the hot edge of the class, which is a selection effect from the behavior of defining N iii and C iii absorption blends, related to the tendency toward emission (Of effect) in the former. An additional N/C criterion first proposed by Bisiacchi et al. is discussed as a means to alleviate that effect, and it is relevant to the two new objects. The entire ON supergiant class is discussed; they display a fascinating diversity of detail undoubtedly related to the complexities of their extended atmospheres and winds that are sensitive to small differences in physical parameters, as well as to binary effects in some cases. Serendipitously, we have found significant variability in the spectrum of a little-known hypergiant with normal N, C spectra selected as a comparison for the anomalous objects. In contrast to the supergiants, the ONn spectra are virtual (nitrogen)-carbon copies of one another except for the degrees of line broadening, which emphasizes their probable unique origin and hence amenability to definitive astrophysical interpretation.

  18. Tanguy du Chastel, l'homme de Montereau.

    OpenAIRE

    Cassard, Jean-Christophe

    2004-01-01

    ISBN : 2-9513922-1-4 ; 332 p.; National audience; Né dans une famille de moyenne noblesse possessionnée à la pointe de Bretagne, Tanguy du Chastel servira fidèlement le dauphin Charles, devenu Charles VI. Soupçonné d'avoir porté des coups mortels au duc de Bourgogne lors d'une rencontre organisée sur le pont de Montereau, l'ancien prévôt de Paris connaît une seconde carrière en Provence, sans jamais rompre avec son pays d'origine.

  19. Usages différenciés des TIC chez les seniors au prisme de l’âge, du genre et de la classe sociale

    OpenAIRE

    Bourdeloie, Hélène; Boucher-Petrovic, Nathalie

    2014-01-01

    Selon le modèle expressiviste (Allard, 2007 ; 2009), les technologies de l’information et de la communication (TIC) recèlent des potentialités expressives permettant à l’individu de performer son identité et, ipso facto, de reconfigurer son identité socialement assignée au profit d’une identité façonnée individuellement. Dans une société marquée par les valeurs individualistes et dans laquelle les TIC prennent une place qui rivalise désormais avec les grands cadres de socialisation traditionn...

  20. National Computer Security Conference Proceedings (12th): Information Systems Security: Solutions for Today - Concepts for Tomorrow Held in Baltimore, Maryland on 10-13 October 1989

    Science.gov (United States)

    1989-10-13

    ACCRED 1 TAT I ONN MIANAG3EMENT I NVENTORY l’RODU I’S SYSTEMIS VUL.NERAB I L I TY TEMPEST SYSTEMS 462 Autoniating the procedure could also reduce user...Energy’s risk assessment needs. While it should be noted that the concept must be customized to an organization’s " culture ," way of doing business, etc., it...the worksheets. Data sets provided in the resource tables are customized to suit the needs and " culture " of the organization. The concept also allows

  1. Lewis base catalyzed 1,3-dithiane addition to carbonyl and imino compounds using 2-trimethylsilyl-1,3-dithiane.

    Science.gov (United States)

    Michida, Makoto; Mukaiyama, Teruaki

    2008-09-01

    Lewis base-catalyzed 1,3-dithiane addition to electrophiles such as carbonyl compounds and N-substituted aldimines with 2-trimethylsilyl-1,3-dithiane (TMS-dithiane) is described. By the activation of the carbon-silicon bond in the presence of a Lewis base catalyst such as tetrabutylammonium phenoxide (PhONnBu(4)), a 1,3-dithiane addition reaction proceeded smoothly to afford the corresponding adducts in good to high yields under mild conditions. This synthesis is also applied to the reactions of ketones having alpha-protons, and of N-substituted aldimines.

  2. Fibrose hépatique : lien force mécanique et génotoxicité

    OpenAIRE

    Langouët , Sophie

    2014-01-01

    En 2012, en France, il y a eu 6.867 nouveaux cas de cancer du foie chez l’homme et 1.586 chez la femme. On soupçonne que les maladies du foie sont associées à un dysfonctionnement sévère des fonctions hépatiques et susceptibles d’entraîner une sensibilité accrue des patients vis-à-vis des contaminants environnementaux. Comment évaluer cette susceptibilité individuelle au cours de maladies chroniques, qui se prolongent dans le temps ? L’objectif du projet Mécagénotox est de caractériser et mod...

  3. Le parcours sinueux des «heureux orphelins» ou la mise en récit de l’identité nationale

    OpenAIRE

    Herman, Jan; Vanacker, Beatrijs

    2016-01-01

    Trois romans, deux genres, un argument Quand en 1754 Crébillon-fils reprend la plume de romancier, après un silence de plusieurs années, c’est d’un roman anglais qu’il s’inspire. En adoptant comme modèle The Fortunate Foundlings publié par Eliza Haywood en 1744, l’auteur refaçonne et développe l’intrigue libertine qui ne constituait qu’une section infime dans l’original anglais. Quant à la trame de Haywood, c’est essentiellement un roman familial, abandonné après trois chapitres par le romanc...

  4. Genre et jeunesse à l'époque contemporaine

    Directory of Open Access Journals (Sweden)

    Véronique Blanchard

    2009-08-01

    Full Text Available Adams Mary Louise. The Trouble with Normal: Postwar Youth and the Making of Heterosexuality. Toronto, University of Toronto Press, 1997, 256 p.Bantigny Ludivine, Le plus bel âge ? - Jeunes et jeunesse en France de l'aube des « Trente Glorieuses » à la guerre d'Algérie, Paris, Fayard, 2007, 498 p.Bard Christine, « Jeunesse de la garçonne », in Ludivine Bantigny, Ivan Jablonka (dir., Jeunesse oblige. Une histoire des jeunes en France (XIXe-XXIe siècles, Paris, PUF, 2009, pp. 111-126.Blanchard...

  5. Le projet de station touristique

    OpenAIRE

    Vlès, Vincent

    1996-01-01

    Cet ouvrage traite du savoir-faire du technicien, de l'ingénieur, du directeur d'office de tourisme qui façonne, depuis maintenant près de trois décennies, le territoire local de la production touristique : la station. Il analyse les stratégies, les mises en œuvre, les pratiques de l'aménagement et du développement touristique. Il propose une construction du projet de station, méthode qui est l'aboutissement d'expériences de terrain. Il présente un guide des interventions. Il décrit des modes...

  6. History of the theory of superconductivity

    International Nuclear Information System (INIS)

    Frohlich, H.

    1983-01-01

    This chapter points out that in the years from Onnes' discovery that the electric resistivity of mercury completely disappeared at about 4K in 1911 up to 1950, many attempts to develop a theory of superconductivity failed, and the subject became an outstanding problem in physics. Discusses the introduction of field theory into solid state physics, which proved to be the decisive step toward a theory. Describes how Schrieffer's suggestion of a wave function for the multielectron problem in terms of electron pairs led to the theory of superconductivity, or the so called B.C.S. theory

  7. the sequence of wet and dry days at ibadan and onne (sub-humid

    African Journals Online (AJOL)

    NIJOTECH

    Management, University of Bonn,. D53113 ... *Present Address: Dept of Ecology and Natural Resources Management, Center for Development ... rainfall dependent events such as rainfed and ... physical motivation and continuous memory.

  8. Structure of 19O from measurement and R-matrix analysis of sigma(theta) for 18O(n,n)18O and 18O(n,n')18Osup(*) (1.98 MeV)

    International Nuclear Information System (INIS)

    Koehler, P.E.; Knox, H.D.; Resler, D.A.; Lane, R.O.

    1986-01-01

    Differential cross sections for neutrons elastically scattered from 18 O and inelastically scattered to the first excited state 18 Osup(*) (1.98 MeV) have been measured at forty-two incident energies for 5.0 19 O of 8.7 to 11.1 MeV. The cross sections were measured at eleven laboratory angles per energy from 20 0 to 160 0 and show considerable resonance structure. These new elastic and inelastic 1.98 MeV level data have been analyzed together with previously published cross sections for 0 19 O. The new assignments are compared to previous work where possible. Several previous assignments for resonances in the 0 19 F for the newly assigned levels in 19 O. On the basis of spin, parity, excitation energy and a comparison of reduced neutron widths in 19 O with reduced proton widths in 19 F, six previously-identified T=3/2 analogs were verified and eight new T=3/2 analogs were tentatively assigned. Comparisons with existing theoretical work are discussed. (orig.)

  9. Zweifache Marginalisierung. Über das Verhältnis von Geschlecht, Politik und Geschichtswissenschaft im 20. Jahrhundert Double Marginalization. On the Relationship between Gender, Politics, and History in the 20th Century

    Directory of Open Access Journals (Sweden)

    Andreas Schneider

    2008-03-01

    Full Text Available In ihrer Dissertation untersucht Heike Anke Berger die bislang in der Historiographiegeschichte deutlich vernachlässigte Kategorie Geschlecht. Sie nähert sich der Frage nach deren Rolle im Zusammenspiel mit Politik und Wissenschaft durch einen biographischen Zugriff. Anhand von Fallbeispielen zeigt die Autorin auf, in welchem Maße historische Praxis von geschlechtersegregierenden und -hierarchisierenden Formen der Arbeitsteilung sowie spezifisch männlich besetzten Vorstellungen des „Historikers“ beeinflusst war.In her dissertation, Anke Berger examines the category of gender in historiography, which until now has been noticeably neglected. She accesses the question of its role in the interplay between politics and science through a biographical approach. The author uses case studies to point to the extent to which historical practice was influenced by gender-segregated and hierarchical forms of the division of labor as well as a specifically male-oriented understanding of “historians”.

  10. Compte rendu de lecture : Devenir élue. Genre et carrière politique

    OpenAIRE

    Demazière , Didier

    2016-01-01

    À l’heure de la progression, sous l’impulsion de textes législatifs, de la parité en politique, ce livre examine comment le genre façonne les rôles et carrières politiques. Dans de multiples registres, tels les responsabilités exercées, les activités privilégiées, les missions valorisées, les conceptions du travail, les écarts entre femmes et hommes élus dans les mêmes assemblées sont observés. Ce volet, classique, est complété par une analyse des évolutions de ces différences de genre sous l...

  11. Devenir élue. Genre et carrière politique, M. Navarre

    OpenAIRE

    Demazière, Didier

    2017-01-01

    À l’heure de la progression, sous l’impulsion de textes législatifs, de la parité en politique, ce livre examine comment le genre façonne les rôles et carrières politiques. Dans de multiples registres, tels les responsabilités exercées, les activités privilégiées, les missions valorisées, les conceptions du travail, les écarts entre femmes et hommes élus dans les mêmes assemblées sont observés. Ce volet, classique, est complété par une analyse des évolutions de ces différences de genre sous l...

  12. Internet Alternatifs

    OpenAIRE

    Dulong de Rosnay , Melanie; Musiani , Francesca

    2015-01-01

    International audience; L'Internet est constitué de différents éléments et couches, qui peuvent être développés, façonnés et organisés de plusieurs manières : le réseau, l'hébergement, les applications, la connexion locale, les contenus. Si le concept de décentralisation est en quelque sorte inscrit dans le principe même de l'Internet – et notamment dans l'organisation de la circulation des flux – son urbanisme actuel semble n'intégrer ce principe que de manière limitée, et certains des risqu...

  13. Effect of oxygen vacancy distribution on the thermoelectric properties of La-doped SrTiO3 epitaxial thin films

    KAUST Repository

    Sarath Kumar, S. R.; Abutaha, Anas I.; Hedhili, Mohamed N.; Alshareef, Husam N.

    2012-01-01

    A detailed study of the role of oxygen vacancies in determining the effective mass and high temperature (300–1000 K) thermoelectricproperties of La-doped epitaxial SrTiO3 thin films is presented. It is observed that at intermediate temperatures, a transition from degenerate to non-degenerate behavior is observed in the Seebeck coefficient, but not electrical conductivity, which is attributed to heterogeneous oxygen non-stoichiometry. Heikes formula is found to be invalid for the films with oxygen vacancies. By fitting the spectroscopic ellipsometry (SE) data, obtained in the range 300–2100 nm, using a Drude-Lorentz dispersion relation with two Lorentz oscillators, the electrical and optical properties of the films are extracted. Using the excellent agreement between the transport properties extracted from SE modeling and direct electrical measurements, we demonstrate that an increase in concentration of oxygen vacancies results in a simultaneous increase of both carrier concentration and electron effective mass, resulting in a higher power factor.

  14. Effect of oxygen vacancy distribution on the thermoelectric properties of La-doped SrTiO3 epitaxial thin films

    KAUST Repository

    Sarath Kumar, S. R.

    2012-12-03

    A detailed study of the role of oxygen vacancies in determining the effective mass and high temperature (300–1000 K) thermoelectricproperties of La-doped epitaxial SrTiO3 thin films is presented. It is observed that at intermediate temperatures, a transition from degenerate to non-degenerate behavior is observed in the Seebeck coefficient, but not electrical conductivity, which is attributed to heterogeneous oxygen non-stoichiometry. Heikes formula is found to be invalid for the films with oxygen vacancies. By fitting the spectroscopic ellipsometry (SE) data, obtained in the range 300–2100 nm, using a Drude-Lorentz dispersion relation with two Lorentz oscillators, the electrical and optical properties of the films are extracted. Using the excellent agreement between the transport properties extracted from SE modeling and direct electrical measurements, we demonstrate that an increase in concentration of oxygen vacancies results in a simultaneous increase of both carrier concentration and electron effective mass, resulting in a higher power factor.

  15. Thermal coupling and effect of subharmonic synchronization in a system of two VO2 based oscillators

    Science.gov (United States)

    Velichko, Andrey; Belyaev, Maksim; Putrolaynen, Vadim; Perminov, Valentin; Pergament, Alexander

    2018-03-01

    We explore a prototype of an oscillatory neural network (ONN) based on vanadium dioxide switching devices. The model system under study represents two oscillators based on thermally coupled VO2 switches. Numerical simulation shows that the effective action radius RTC of coupling depends both on the total energy released during switching and on the average power. It is experimentally and numerically proved that the temperature change ΔT commences almost synchronously with the released power peak and T-coupling reveals itself up to a frequency of about 10 kHz. For the studied switching structure configuration, the RTC value varies over a wide range from 4 to 45 μm, depending on the external circuit capacitance C and resistance Ri, but the variation of Ri is more promising from the practical viewpoint. In the case of a "weak" coupling, synchronization is accompanied by attraction effect and decrease of the main spectra harmonics width. In the case of a "strong" coupling, the number of effects increases, synchronization can occur on subharmonics resulting in multilevel stable synchronization of two oscillators. An advanced algorithm for synchronization efficiency and subharmonic ratio calculation is proposed. It is shown that of the two oscillators the leading one is that with a higher main frequency, and, in addition, the frequency stabilization effect is observed. Also, in the case of a strong thermal coupling, the limit of the supply current parameters, for which the oscillations exist, expands by ∼10%. The obtained results have a universal character and open up a new kind of coupling in ONNs, namely, T-coupling, which allows for easy transition from 2D to 3D integration. The effect of subharmonic synchronization hold promise for application in classification and pattern recognition.

  16. Forecasting of Water Consumptions Expenditure Using Holt-Winter’s and ARIMA

    Science.gov (United States)

    Razali, S. N. A. M.; Rusiman, M. S.; Zawawi, N. I.; Arbin, N.

    2018-04-01

    This study is carried out to forecast water consumption expenditure of Malaysian university specifically at University Tun Hussein Onn Malaysia (UTHM). The proposed Holt-Winter’s and Auto-Regressive Integrated Moving Average (ARIMA) models were applied to forecast the water consumption expenditure in Ringgit Malaysia from year 2006 until year 2014. The two models were compared and performance measurement of the Mean Absolute Percentage Error (MAPE) and Mean Absolute Deviation (MAD) were used. It is found that ARIMA model showed better results regarding the accuracy of forecast with lower values of MAPE and MAD. Analysis showed that ARIMA (2,1,4) model provided a reasonable forecasting tool for university campus water usage.

  17. Paperless Transaction for Publication Incentive System

    Science.gov (United States)

    Ibrahim, Rosziati; Madon, Hamiza Diana; Nazri, Nurul Hashida Amira Mohd; Saarani, Norhafizah; Mustapha, Aida

    2017-08-01

    Within the Malaysian context, incentive system in scientific publishing rewards authors for publishing journal articles or conference papers that are indexed by Scopus. At Universiti Tun Hussein Onn Malaysia, the incentive system is going into its third year in operational. The main challenge lies in preparing the evidences as required by the application guideline. This paper presents an online module for publication incentive within the University Publication Information System (SMPU). The module was developed using the Scrum methodology based on the existing workflow of paper-based application. The module is hoped to increase the quality of the system deliverables of SMPU as well as having the ability to cope with change of university requirements in the future.

  18. The Influence of an undergraduate scientific initiation programme onn the professional profile of new physicians.

    Science.gov (United States)

    Joaquim Teles Cyrillo, Raphael; Setúbal, Sérgio; da Silva Júnior, Cyro Teixeira; Guillermo Coca Velarde, Luis; de Mattos, Ana Carolina Musser Tavares; Bezerra Cardoso, Renato Bergallo; Cardoso, Gilberto Perez

    2010-01-01

    This paper studies the influence of a Scientific Initiation Programme (SIP) on the professional profile of new doctors from a Brazilian university. Evaluate fifty-two new doctors divided into two groups matched by sex, age and academic performance and differing only in participation in the SIP. Professional and socioeconomic data were collected, including schooling of parents; average income before, during and after the medical course; current professional situation; results of exams for civil servant recruitment; and titles and degrees obtained after graduation. Significant differences were found only in civil servant recruitment exam results (p=0.0098) and in income after graduation (p=0.02), which were both higher in the non-SIP group. Only one doctor got a M.Sc. degree after graduation, but many of them in both groups obtained technical titles, and had papers presented at congresses or published. Apparently, taking part in a SIP led to lower income and worse civil servant recruitment exam results. However, this may only reflect a transient phase in a long-term process. New research currently under way will answer this remaining question, now that more time has elapsed since graduation. Rev Port Pneumol 2010; XVI (5): 797-808. © 2010 Sociedade Portuguesa de Pneumologia/SPP.

  19. The Influence of an undergraduate scientific initiation programme onn the professional profile of new physicians

    Directory of Open Access Journals (Sweden)

    Raphael Joaquim Teles Cyrillo

    2010-09-01

    Full Text Available Introduction: This paper studies the influence of a Scientific Initiation Programme (SIP on the professional profile of new doctors from a Brazilian university. Aim and methods: Evaluate fifty-two new doctors divided into two groups matched by sex, age and academic performance and differing only in participation in the SIP. Professional and socioeconomic data were collected, including schooling of parents; average income before, during and after the medical course; current professional situation; results of exams for civil servant recruitment; and titles and degrees obtained after graduation. Results: Significant differences were found only in civil servant recruitment exam results (p = 0.0098 and in income after graduation (p = 0.02, which were both higher in the non-SIP group. Only one doctor got a M.Sc. degree after graduation, but many of them in both groups obtained technical titles, and had papers presented at congresses or published. Conclusions: Apparently, taking part in a SIP led to lower income and worse civil servant recruitment exam results. However, this may only reflect a transient phase in a long-term process. New research currently under way will answer this remaining question, now that more time has elapsed since graduation. Resumo: Introdução: Este trabalho estuda a influência de um programa de iniciação científica (PIC no perfil profissional de médicos recém-formados numa universidade pública brasileira. Objectivos e métodos: Avaliamos cinquenta e dois novos médicos arrolados em dois grupos pareados por sexo, idade e coeficiente de rendimento académico, diferindo apenas na sua participação no PIC. Dados acerca da situação profissional e socioeconómica foram obtidos, incluindo a escolaridade dos pais; a renda familiar média antes, durante e depois da realização do curso médico; a situação profissional actual; as aprovações em concurso público e os títulos e graus obtidos após a graduação. Resultados: Diferenças significativas foram observadas apenas nas aprovações em concursos públicos (p = 0,0098 e na renda familiar após a graduação (p = 0,02, maiores ambas no grupo não PIC. Apenas um médico obteve o título de mestre após a graduação, embora muitos deles em ambos os grupos tenham obtidos títulos técnicos e publicado ou apresentado artigos médicos em congressos. Conclusões: Aparentemente, a participação num PIC implica menor renda familiar e menor número de aprovações em concursos públicos. Entretanto, isto pode reflectir apenas uma etapa passageira de um longo processo. Uma nova pesquisa, já em curso, virá esclarecer esta última questão, agora que mais tempo já decorreu desde as suas graduações. Key words: Scientific initiation, medical education, medical curriculum, Palavras-chave: Iniciação científica, educação médica, currículo médico

  20. Agallamh Oisín agus Phádraig: léamha ón bparaitéacs

    Directory of Open Access Journals (Sweden)

    Síle Ní Mhurchú

    2016-10-01

    Full Text Available San aiste seo, baintear úsáid as coincheap an pharaitéacs le Gérard Genette chun anailís a dhéanamh ar na cóipeanna lámhscríbhinne d’Agallamh Oisín agus Phádraig. Léiríonn na paraitéacsanna seo go raibh níos mó i gceist le saothar an scríobhaí ná cóipeáil: rinne mórán acu machnamh dian ar an ábhar a bhí á scríobh acu agus thugadar freagra ar ghluaiseachtaí stairiúla agus intleachtúla a bhí ag dul i bhfeidhm orthu ina gcuid scríbhinní paraitéacsúla. Féachtar ar na hathruithe a rinneadh ar chur i láthair na dtéacsanna le himeacht na mblianta agus ar na scríbhinní paraitéacsúla éagsúla — teidil, réamhráite, gluaiseanna, aistriúcháin, agus téacsanna eile nach iad — a cuireadh leis an Agallamh. Thug an paraitéacs spás do scríobhaithe inar fhéad siad dul i gcion ar phátrúin agus ar léitheoirí eile agus is iad seo a leanas na príomhthéamaí a eascraíonn ó anailís ar pharaitéacsanna an Agallaimh: cuntais na scríobhaithe ar cheird na scríbhneoireachta; athruithe i leagan amach na dtéacsanna faoi thionchar an chlóphreasa; an Béarla sa pharaitéacs; tagairtí do shaothar James Macpherson; meath na Gaeilge. Ar deireadh, fiafraítear an dtugann na scríbhinní paraitéacsúla léargas dúinn ar na mothúcháin a mhúscail an tAgallamh ina léitheoirí agus ina éisteoirí.

  1. Heike Brabandt, Bettina Roß, Susanne Zwingel (Hg.: Mehrheit am Rand? Wiesbaden: VS Verlag für Sozialwissenschaften 2008

    Directory of Open Access Journals (Sweden)

    Katja Strobel

    2009-03-01

    Full Text Available Im vorliegenden Sammelband werden aktuelle Diskussionen zu den Themen Globalierung, Exklusion, Geschlechterverhältnisse und Ethnizität zusammengeführt. Vor allem noch wenig rezipierte postkoloniale Ansätze werden berücksichtigt. Das breite Spektrum an Themen und die Vielfalt an Ansätzen, die von empirischen Studien zur Makroökonomik über historische Analysen bis hin zu detaillierten Fallstudien reicht, überzeugt. Der Anspruch, zum Thema globale Ungleichheit Beiträge aus den zentralen sozialwissenschaftlichen Feldern sinnvoll zusammenzuführen, wird eingelöst.The collected volume at hand brings together relevant discussions on the themes of globalization, exclusion, gender relations, and ethnicity. Those postcolonial approaches persistently ignored are of particular interest. The broad spectrum of themes and the multiplicity of approaches – these ranging from empirical studies to microeconomics, from historical analysis to detailed case studies – is convincing. The wish to place contributions from the main social scientific fields into meaningful relationships with one another under the theme “global diversity” is fulfilled.

  2. Un site urbain façonné par l’industrie : Thiers, ville coutelière

    Directory of Open Access Journals (Sweden)

    Anne Henry

    2012-05-01

    Full Text Available L’évolution urbaine de Thiers est profondément marquée par une intense activité industrielle avérée depuis près de sept siècles. Cet impact est particulièrement perceptible dans les gorges de la Durolle, occupées par près de quarante usines ou ateliers. L’industrie est également très présente dans le centre ancien, où les étendoirs de papeterie et les ateliers de couteliers à domicile sont parfaitement intégrés dans l’habitat médiéval. On constate également que les grandes avancées techniques ayant émaillé l’histoire de l’industrie aux XIXe et XXe siècles ont eu des conséquences indéniables sur l’évolution de la ville et des usines : l’évolution des axes de communication, la mécanisation des procédés de fabrication, l’électrification, ont permis un développement sans précédent de la coutellerie et de la cité tout entière.The evolution of the town of Thiers is strongly marked by the intense industrial activity of the locality, specialised in cutlery production for nearly seven centuries. This impact of industry is particularly visible in the Durolle gorge, where there are nearly forty factories and workshops. The presence of industry is also perceptible in the historic centre of the town, where drying sheds for paper and cutlery workers’ shops are integrated into the medieval habitat. The technical advances which marked the industry during the nineteenth and twentieth centuries also had a notable influence on the evolution of the town and its factories. The development of means of communication, the mechanisation of production processes and electrification all contributed to an unprecedented growth of cutlery production and of the town as a whole.

  3. Testez vos connaissances en langue française

    CERN Document Server

    Bouvet, Stéphanie

    2009-01-01

    C'est bien connu, la langue française est riche, très riche. Le " petit " Larousse ne compte pas moins de 150 000 définitions ! Le problème, c'est qu'elle est même tellement riche que vous y perdez parfois votre latin. Avec Testez vos connaissances en langue française, vous allez pouvoir réviser vos classiques tout en découvrant des trésors bien cachés du lexique français : étymologies surprenantes, sens insoupçonné de mots régionaux ou d'argotismes, équivalences entre mots de niveau de langage différents, etc. Ludique et instructif, Testez vos connaissances en langue française est un voyage à travers l'histoire des mots et des usages.

  4. Arrow-bot: A Teaching Tool for Real-Time Embedded System Course

    Directory of Open Access Journals (Sweden)

    Zakaria Mohamad Fauzi

    2017-01-01

    Full Text Available This paper presents the design of a line following Arduino-based mobile robot for Real-Time Embedded System course at Universiti Tun Hussein Onn Malaysia. The real-time system (RTS concept was implementing is based on rate monotonic scheduling (RMS on an ATmega328P microcontroller. Three infrared line sensors were used as input for controlling two direct current (DC motors. A RTS software was programmed in Arduino IDE which relied on a real-time operating system (RTOS of ChibiOS/RT library. Three independent tasks of software functions were created for testing real-time scheduling capability and the result of temporal scope was collected. The microcontroller succeeded to handle multiple tasks without missed their dateline. This implementation of the RTOS in embedded system for mobile robotics system is hoped to increase students understanding and learning capability.

  5. The First International Conference on Soft Computing and Data Mining

    CERN Document Server

    Ghazali, Rozaida; Deris, Mustafa

    2014-01-01

    This book constitutes the refereed proceedings of the First International Conference on Soft Computing and Data Mining, SCDM 2014, held in Universiti Tun Hussein Onn Malaysia, in June 16th-18th, 2014. The 65 revised full papers presented in this book were carefully reviewed and selected from 145 submissions, and organized into two main topical sections; Data Mining and Soft Computing. The goal of this book is to provide both theoretical concepts and, especially, practical techniques on these exciting fields of soft computing and data mining, ready to be applied in real-world applications. The exchanges of views pertaining future research directions to be taken in this field and the resultant dissemination of the latest research findings makes this work of immense value to all those having an interest in the topics covered.    

  6. GREAT I: A Study of the Upper Mississippi River. Volume 3. Material and Equipment Needs, Commercial Transportation.

    Science.gov (United States)

    1980-09-01

    Cd r - 41J r 0 2 5 4 O , 04 -0.0 00q w C6 0 0 w 4- w o1 0 ~ 41 02 H0~ 002 4 W-" cc a.0 u : 1 0 - td c EI-4 d) a 400 JJ 04 ,4 004p0Cu0 9: o41 V 02.oE...F cryoni .1 F r) TVpm 2 !ymnr + rnf Tm qmrn A ;01 MI 9 (IQ I A TV ; ’A Hi~ - 1 AiFf 0 P m T 0 1 IK T N r 9 I F ( APA ,PP *r i IHq ~ I r T 1) % I P -. l...ri v , tl -,,: a: Td , maximize cost effectiven’ss. For many years these historical practices provid-d a dc-hndah] h¢onne] liii satisfied the

  7. Fabrication and characterization of n-on-n silicon pixel detectors compatible with the Medipix2 readout chip

    Energy Technology Data Exchange (ETDEWEB)

    Zorzi, N. [ITC-irst, Divisione Microsistemi, Via Sommarive 18, I-38050 Povo (Trento) (Italy)]. E-mail: zorzi@itc.it; Bisogni, M.G. [Dipartimento di Fisica, Universita di Pisa and Sezione INFN, Via Buonarroti 2, I-56127 Pisa (Italy); Boscardin, M. [ITC-irst, Divisione Microsistemi, Via Sommarive 18, I-38050 Povo (Trento) (Italy); Dalla Betta, G.-F. [Dipartimento di Informatica e Telecomunicazioni, Universita di Trento, Via Sommarive 14, I-38050 Povo (Trento) (Italy); Gregori, P. [ITC-irst, Divisione Microsistemi, Via Sommarive 18, I-38050 Povo (Trento) (Italy); Novelli, M. [Dipartimento di Fisica, Universita di Pisa and Sezione INFN, Via Buonarroti 2, I-56127 Pisa (Italy); Piemonte, C. [ITC-irst, Divisione Microsistemi, Via Sommarive 18, I-38050 Povo (Trento) (Italy); Quattrocchi, M. [Dipartimento di Fisica, Universita di Pisa and Sezione INFN, Via Buonarroti 2, I-56127 Pisa (Italy); Ronchin, S. [ITC-irst, Divisione Microsistemi, Via Sommarive 18, I-38050 Povo (Trento) (Italy); Rosso, V. [Dipartimento di Fisica, Universita di Pisa and Sezione INFN, Via Buonarroti 2, I-56127 Pisa (Italy)

    2005-07-01

    Pixel detectors for mammographic applications have been fabricated at ITC-irst on 800 {mu}m thick silicon wafers adopting a double side n{sup +}-on-n fabrication technology. The activity aims at increasing the X-ray detection efficiency in the energy range of interest minimizing the risk of electrical discharges in hybrid systems operating at high voltages. The detectors, having a layout compatible with the Medipix2 photon counting chip, feature two different design solutions for the p-isolation between neighboring n{sup +}-pixels. We report on the characterization of the fabrication process and on preliminary results of electrical measurements on full detectors and pixel test structures. In particular, we found that the detectors can be reliably operated above the full depletion voltage regardless of the isolation design, that however, impacts the performances in terms of current-voltage characteristics, single pixel currents, inter-pixel resistances and inter-pixel capacitances.

  8. Fabrication and characterization of n-on-n silicon pixel detectors compatible with the Medipix2 readout chip

    International Nuclear Information System (INIS)

    Zorzi, N.; Bisogni, M.G.; Boscardin, M.; Dalla Betta, G.-F.; Gregori, P.; Novelli, M.; Piemonte, C.; Quattrocchi, M.; Ronchin, S.; Rosso, V.

    2005-01-01

    Pixel detectors for mammographic applications have been fabricated at ITC-irst on 800 μm thick silicon wafers adopting a double side n + -on-n fabrication technology. The activity aims at increasing the X-ray detection efficiency in the energy range of interest minimizing the risk of electrical discharges in hybrid systems operating at high voltages. The detectors, having a layout compatible with the Medipix2 photon counting chip, feature two different design solutions for the p-isolation between neighboring n + -pixels. We report on the characterization of the fabrication process and on preliminary results of electrical measurements on full detectors and pixel test structures. In particular, we found that the detectors can be reliably operated above the full depletion voltage regardless of the isolation design, that however, impacts the performances in terms of current-voltage characteristics, single pixel currents, inter-pixel resistances and inter-pixel capacitances

  9. Itinéraires dans la périurbanité « molle » : entre tout-fonctionnel et résistance Routes in the “soft” peri-urban zone: between functionality and resistancel

    Directory of Open Access Journals (Sweden)

    Eric Chauvier

    2012-06-01

    Full Text Available Si l’on évoque quelquefois la  « mollesse »  des zones périurbaines pavillonnaires, ce jugement tient surtout à un défaut d’investigation. Cette contribution vise à montrer l’ambivalence de ces modes de vie méconnus au niveau anthropologique : fortement standardisés, ils comportent aussi des formes de résistance insoupçonnées. Il reste cependant à apprendre à découvrir ces interstices de vie périurbaine.If we sometimes evoke the "softness" of cottage suburban areas, this judgment is primarily a default of investigation. This contribution aims to show  ambivalence of these modes of life unknown to the anthropological level: highly standardized, they also contain unsuspected forms of resistance. It remains however to learn to discover these interstices of peri-urban life.

  10. In campus location finder using mobile application services

    Science.gov (United States)

    Fai, Low Weng; Audah, Lukman

    2017-09-01

    Navigation services become very common in this era, the application include Google Map, Waze and etc. Although navigation application contains the main routing service in open area but not all of the buildings are recorded in the database. In this project, an application is made for the indoor and outdoor navigation in Universiti Tun Hussein Onn Malaysia (UTHM). It is used to help outsider and new incoming students by navigating them from their current location to destination using mobile application name "U Finder". Thunkable website has been used to build the application for outdoor and indoor navigation. Outdoor navigation is linked to the Google Map and indoor navigation is using the QR code for positioning and routing picture for navigation. The outdoor navigation can route user to the main faculties in UTHM and indoor navigation is only done for the G1 building in UTHM.

  11. Rezension zu: Heike Brabandt, Bettina Roß, Susanne Zwingel (Hg.: Mehrheit am Rand? Wiesbaden: VS Verlag für Sozialwissenschaften 2008

    Directory of Open Access Journals (Sweden)

    Katja Strobel

    2009-03-01

    Full Text Available Im vorliegenden Sammelband werden aktuelle Diskussionen zu den Themen Globalierung, Exklusion, Geschlechterverhältnisse und Ethnizität zusammengeführt. Vor allem noch wenig rezipierte postkoloniale Ansätze werden berücksichtigt. Das breite Spektrum an Themen und die Vielfalt an Ansätzen, die von empirischen Studien zur Makroökonomik über historische Analysen bis hin zu detaillierten Fallstudien reicht, überzeugt. Der Anspruch, zum Thema globale Ungleichheit Beiträge aus den zentralen sozialwissenschaftlichen Feldern sinnvoll zusammenzuführen, wird eingelöst.

  12. Confucian Learning and Literacy in Japan’s Schools of the Edo Period

    Directory of Open Access Journals (Sweden)

    Kristina HMELJAK SANGAWA

    2017-06-01

    Full Text Available With the political stability, economic growth and cultural revitalisation of Japan after its unification by Tokugawa Ieyasu, the educational infrastructure also grew to meet new literacy demands. Governmental schools endowed by the shogunate (Shōheikō and by the domains (hankō, which catered to the upper military class of the samurai, focused on classical Chinese studies, particularly the Neo-Confucian canon taught in kanbun, a style of classical Chinese. Given the prestige of Neo-Confucian Chinese learning and of the kanbun writing style, these were taught also in temple schools (terakoya and private academies (juku that were open to the lower classes, thus contributing to the spread of this particular type of literacy. However, Chinese learning in these schools often involved memorising rather than reading, both because of educational traditions and socio-ideological factors, and also because of the sheer difficulty of reading kanbun, a de facto foreign language. The present article investigates the contrasting implications of Neo-Confucian learning and of the kanbun writing style for the development of education and literacy in Japanese society: while the prestige of Chinese learning contributed to the demand for and development of educational facilities, its complexity also acted as an obstacle to the development of widespread functional literacy.

  13. Thermal, spectral, magnetic and biological studies of thiosemicarbazones complexes with metal ions: Cu(II), Co(II), Ni(II), Fe(III), Zn(II), Mn(II) and UO2(VI)

    International Nuclear Information System (INIS)

    Mashaly, M.M.; Seleem, H.S.; El-Behairy, M.A.; Habib, H.A.

    2004-01-01

    Thiosemicarbazones ligands, isatin-3-thiosemicarbazone(HIT) and N-acetylisatin-3-thiosemicarbazone (HAIT), which have tridentate ONN coordinating sites were prepared. The complexes of both ligands with Cu(II), Co(II), Ni(II), Fe(III), Zn(II), Mn(II) and UO 2 (VI) ions were isolated. The ligands and their metal complexes were characterized by elemental analysis, IR, UV-Vis and mass spectra, also by conductance, magnetic moment and TG-DSC measurements. All the transition metal complexes have octahedral configurations, except Cu-complexes which have planar geometry and the UO 2 (VI) complexes which have coordination number 8 and may acquire the distorted dodecahedral geometry. Thermal studies explored the possibility of obtaining new complexes. Inversion from octahedral to square-planar configuration occurred upon heating the parent Ni-HIAT complex to form the corresponding pyrolytic product. The antifungal activity against the tested organisms showed that some metal complexes enhanced the activity with respect to the parent ligands. (author)

  14. Construction of Buildings on Peat: Case Studies and Lessons Learned

    Directory of Open Access Journals (Sweden)

    Mahmod Ali Abdul-Wadoud

    2016-01-01

    Full Text Available Building construction on soft soils including on peat has many challenges and difficulties. The failed and deteriorated buildings have a big impact on the community. The IConCEES International Workshop 2015 which was conducted on October 2015 convened as a joint venture between Universiti Tun Hussein Onn Malaysia (UTHM and the University College of Technology Sarawak (UCTS. The aim was to invite regional experts from academia and the industry to formally present and discuss the various construction problems encountered when working with peat. The discussions were divided into two divisions; infrastructure and building construction. This paper discusses the outcomes of the workshop and focuses on the factors and relevant challenges when constructing buildings on peat. The experts have discussed regulatory and construction issues including: drainage issues, site investigation practices, monitoring and construction guidelines. A few suggestions were outlined as a remedy to these problems and to better assist the peat practitioner at work.

  15. Strong Neutron Pairing in core+4n Nuclei.

    Science.gov (United States)

    Revel, A; Marqués, F M; Sorlin, O; Aumann, T; Caesar, C; Holl, M; Panin, V; Vandebrouck, M; Wamers, F; Alvarez-Pol, H; Atar, L; Avdeichikov, V; Beceiro-Novo, S; Bemmerer, D; Benlliure, J; Bertulani, C A; Boillos, J M; Boretzky, K; Borge, M J G; Caamaño, M; Casarejos, E; Catford, W N; Cederkäll, J; Chartier, M; Chulkov, L; Cortina-Gil, D; Cravo, E; Crespo, R; Datta Pramanik, U; Díaz Fernández, P; Dillmann, I; Elekes, Z; Enders, J; Ershova, O; Estradé, A; Farinon, F; Fraile, L M; Freer, M; Galaviz, D; Geissel, H; Gernhäuser, R; Golubev, P; Göbel, K; Hagdahl, J; Heftrich, T; Heil, M; Heine, M; Heinz, A; Henriques, A; Ignatov, A; Johansson, H T; Jonson, B; Kahlbow, J; Kalantar-Nayestanaki, N; Kanungo, R; Kelic-Heil, A; Knyazev, A; Kröll, T; Kurz, N; Labiche, M; Langer, C; Le Bleis, T; Lemmon, R; Lindberg, S; Machado, J; Marganiec, J; Movsesyan, A; Nacher, E; Najafi, M; Nilsson, T; Nociforo, C; Paschalis, S; Perea, A; Petri, M; Pietri, S; Plag, R; Reifarth, R; Ribeiro, G; Rigollet, C; Röder, M; Rossi, D; Savran, D; Scheit, H; Simon, H; Syndikus, I; Taylor, J T; Tengblad, O; Thies, R; Togano, Y; Velho, P; Volkov, V; Wagner, A; Weick, H; Wheldon, C; Wilson, G; Winfield, J S; Woods, P; Yakorev, D; Zhukov, M; Zilges, A; Zuber, K

    2018-04-13

    The emission of neutron pairs from the neutron-rich N=12 isotones ^{18}C and ^{20}O has been studied by high-energy nucleon knockout from ^{19}N and ^{21}O secondary beams, populating unbound states of the two isotones up to 15 MeV above their two-neutron emission thresholds. The analysis of triple fragment-n-n correlations shows that the decay ^{19}N(-1p)^{18}C^{*}→^{16}C+n+n is clearly dominated by direct pair emission. The two-neutron correlation strength, the largest ever observed, suggests the predominance of a ^{14}C core surrounded by four valence neutrons arranged in strongly correlated pairs. On the other hand, a significant competition of a sequential branch is found in the decay ^{21}O(-1n)^{20}O^{*}→^{18}O+n+n, attributed to its formation through the knockout of a deeply bound neutron that breaks the ^{16}O core and reduces the number of pairs.

  16. Chimie et mécanisme dans la nouvelle Académie royale des sciences : les débats entre Louis Lémery et Etienne-François Geoffroy

    Directory of Open Access Journals (Sweden)

    Bernard Joly

    2008-03-01

    Full Text Available Au début du XVIIIe siècle, une querelle éclate entre deux chimistes français à propos de la fabrication artificielle du fer. C’est en fait un conflit entre une interprétation mécaniste des processus chimiques et une approche plus traditionnelle, soupçonnée d’emprunter ses thèses à l’alchimie, mais qui sera pourtant à l’origine de la table des affinités qui sera adoptée par tous les chimistes jusqu’au début du XIXe siècle.In the early eighteenth century a quarrel came out between two French chemists concerning artificial making of iron. It was in fact a conflict between a mechanist interpretation of chemical process and a more traditional approach, which was suspected of having taken his thesis from alchemy. But nevertheless, this approach will lead to affinity table which was accepted by all the chemists until the early nineteenth century.

  17. Temporal behavior of lung motion assested by xenon-127 scintigraphy using temporal Fourier analysis

    International Nuclear Information System (INIS)

    Susskind, H.; Tang, Y.N.; Bossuyt, A.; Cinotti, L.; Brill, A.B.

    1989-01-01

    Temporal Fourier Analysis (TFA) was applied to standard 127 Xe ventilation studies to determine the time-activity curves up to the third harmonic for a single composite respiratory cycle. A global respiratory index, RI 3 , defined as the ratio of the amplitude for the first three harmonics. Three nonobstructed subjects, two subjects with only small airway disease, five subjects with chronic ostructive pulmonary disease (COPD) and onne subject with restrictive lung disease were studied. Geometric mean values of posterior and anterior images gave a closer relationship between RI 3 and flow or volume parameters than either image alone. RI 3 of the first three harmonics correlated linearly with the values of 1-s forced expiratory volume (FEV 1 )(r 0.783, p 3 values for the five COPD subjects were significantly lower (t = 2.582, p 127 Xe ventilation data therefore appears to be a potentially useful, noninvasive, in vivo technique for evaluation of lung ventilation at the localized level. (author). 20 refs.; 6 figs.; 3 tabs

  18. 100 Years of Superconductivity: Perspective on Energy Applications

    Science.gov (United States)

    Grant, Paul

    2011-11-01

    One hundred years ago this past April, in 1911, traces of superconductivity were first detected near 4.2 K in mercury in the Leiden laboratory of Kammerlingh Onnes, followed seventy-five years later in January, 1986, by the discovery of ``high temperature'' superconductivity above 30 K in layered copper oxide perovskites by Bednorz and Mueller at the IBM Research Laboratory in Rueschlikon. Visions of application to the electric power infrastructure followed each event, and the decades following the 1950s witnessed numerous, successful demonstrations to electricity generation, transmission and end use -- rotating machinery, cables, transformers, storage, current limiters and power conditioning, employing both low and high temperature superconductors in the USA, Japan, Europe, and more recently, China. Despite these accomplishments, there has been to date no substantial insertion of superconducting technology in the electric power infrastructure worldwide, and its eventual deployment remains problematic. We will explore the issues delaying such deployment and suggest future electric power scenarios where superconductivity will play an essential central role.

  19. Copper(II) and molybdenum(VI) complexes of a tridentate ONN donor isothiosemicarbazone: synthesis, characterization, X-ray, TGA and DFT

    Czech Academy of Sciences Publication Activity Database

    Fasihizad, A.; Akbari, A.; Ahmadi, M.; Dušek, Michal; Henriques, Margarida Isabel Sousa; Pojarová, Michaela

    2016-01-01

    Roč. 115, Sep (2016), s. 297-305 ISSN 0277-5387 R&D Projects: GA ČR(CZ) GA14-03276S; GA MŠk LO1603 EU Projects: European Commission(XE) CZ.2.16/3.1.00/24510 Institutional support: RVO:68378271 Keywords : isothiosemicarbazone * Copper(II) complex * molybdenum(VI) complex * crystal structure * DFT Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 1.926, year: 2016

  20. Cetuximab and biomarkers in non-small-cell lung carcinoma

    Directory of Open Access Journals (Sweden)

    Patil N

    2012-07-01

    Full Text Available Nitin Patil, Mohammed Abba, Heike AllgayerDepartment of Experimental Surgery, Medical Faculty Mannheim, University of Heidelberg and Molecular Oncology of Solid Tumors Unit, German Cancer Research Center (DKFZ, Heidelberg, GermanyAbstract: Cancer progression is a highly complex process that is driven by a constellation of deregulated signaling pathways and key molecular events. In non-small-cell lung cancer (NSCLC, as in several other cancer types, the epidermal growth factor receptor (EGFR and its downstream signaling components represent a key axis that has been found not only to trigger cancer progression but also to support advanced disease leading to metastasis. Two major therapeutic approaches comprising monoclonal antibodies and small molecule tyrosine kinase inhibitors have so far been used to target this pathway, with a combination of positive, negative, and inconsequential results, as judged by patient survival indices. Since these drugs are expensive and not all patients derive benefits from taking them, it has become both pertinent and paramount to identify biomarkers that can predict not only beneficial response but also resistance. This review focuses on the chimeric monoclonal antibody, cetuximab, its application in the treatment of NSCLC, and the biomarkers that may guide its use in the clinical setting. A special emphasis is placed on the EGFR, including its structural and mechanistic attributes.Keywords: NSCLC, cetuximab, biomarker, cancer progression

  1. Popularity of Different Lampyrid Species in Japanese Culture as Measured by Google Search Volume.

    Science.gov (United States)

    Takada, Kenta

    2011-07-05

    I investigated the popularity of different lampyrid species (34 species) in Japanese culture as part of a study on cultural entomology. Popularity was assessed by the Google search volume for Japanese lampyrid species names in katakana and hiragana scripts, using the Keyword Tool of Google AdWords. The search volume of lampyrid species as "Genji-botaru" (Luciola cruciata Motschulsky), "Heike-botaru" (Luciola lateralis Motschulsky) and "Hime-botaru" (Hotaria parvula Kiesenwetter), in either or both katakana and hiragana syllabic scripts, was enormously high relative to other lampyrid species, indicating the biased attention of Japanese to these lampyrid species. In addition, search volumes for familial or common lampyrid name ("Hotaru") was assessed and compared with that of 34 lampyrid species. This analyzing result showed that: (1) the search volumes for katakana and hiragana were 37.7 and 773.1 times higher for "Hotaru" than "Genji-botaru", respectively; and (2) the search volume for all lampyrid species was clearly higher in katakana than hiragana, whereas the search volumes for "Hotaru" were clearly higher in hiragana than katakana. These results suggest that: (1) the Japanese public tends to perceive lampyrids with not a clear but an ambiguous taxonomic view; and (2) the attitude of the Japanese public toward lampyrids differs between those who perceive lampyrids with a clear taxonomic view (at species level) and with an ambiguous taxonomic view.

  2. High turnover catalysis of water oxidation by Mn(II) complexes of monoanionic pentadentate ligands

    DEFF Research Database (Denmark)

    Seidler-Egdal, Rune Kirk; Nielsen, Anne; Bond, Andrew

    2011-01-01

    -pyridylmethyl)ethane-1,2-diamine (bcbpen(-)), show the presence of a mixture of closely related Mn(II) species, assigned to the mono, di-, tri- and poly-cationic complexes [Mn(II)(L)(H(2)O)](n)(n+), L = mcbpen(-) or bcbpen(-) with n = 1, 2, 3, etc. In solution, these complexes are reversibly oxidized by tert......:1 reaction of TBHP with [Mn] is rate determining and the resultant species is proposed to be the mononuclear, catalytically competent, [Mn(IV)(O)(mcbpen)](+). At very close m/z values [Mn(III)(OH)(mcbpen)](+), [Mn(2)(III/IV)(O)(2)(mcbpen)(2)](+) and [Mn(IV)(2)(O)(2)(mcbpen)(2)](2+) are detected by ESI MS......-butyl hydrogen peroxide (TBHP), (NH(4))(2)[Ce(NO(3))(6)], Ce(ClO(4))(4), oxone and [Ru(bipy)(3)](3+) to form metastable (t(½) = min to h) higher valent (hydr)oxide species, showing a collective maximum absorbance at 430 nm. The same species can be produced by [Ru(bipy)(3)](2+)-mediated photooxidization...

  3. High Turnover Catalysis of Water Oxidation by Mn(II) complexes of Monoanionic Pentadentate Ligands

    DEFF Research Database (Denmark)

    Seidler-Egdal, Rune Kirk; Nielsen, Anne; Bond, Andrew

    2011-01-01

    -pyridylmethyl)ethane-1,2-diamine (bcbpen−), show the presence of a mixture of closely related Mn(II) species, assigned to the mono, di-, tri- and poly-cationic complexes [MnII(L)(H2O)]nn+, L = mcbpen− or bcbpen− with n = 1, 2, 3, etc. In solution, these complexes are reversibly oxidized by tert-butyl hydrogen...... determining and the resultant species is proposed to be the mononuclear, catalytically competent, [MnIV(O)(mcbpen)]+. At very close m/z values [MnIII(OH)(mcbpen)]+, [Mn2III/IV(O)2(mcbpen)2]+ and [MnIV2(O)2(mcbpen)2]2+are detected by ESI MS and CE when the concentration of TBHP is comparable to or lower than...... peroxide (TBHP), (NH4)2[Ce(NO3)6], Ce(ClO4)4, oxone and [Ru(bipy)3]3+ to form metastable (t½ = min to h) higher valent (hydr)oxide species, showing a collective maximum absorbance at 430 nm. The same species can be produced by [Ru(bipy)3]2+-mediated photooxidization in the presence of an electron acceptor...

  4. Electrical Resistivity Technique for Groundwater Exploration in Quaternary Deposit

    Science.gov (United States)

    Aziman, M.; Hazreek, Z. A. M.; Azhar, A. T. S.; Fahmy, K. A.; Faizal, T. B. M.; Sabariah, M.; Ambak, K.; Ismail, M. A. M.

    2018-04-01

    The water security for University Tun Hussein Onn (UTHM) campus was initiated to find alternative sources of water supply. This research began with finding the soil profiles using the geophysical electrical resistivity method across UTHM campus. The resistivity results were calibrated with previous borehole data as well as via groundwater drilling. The drilling work was discovered the groundwater aquifer characterized by the fractured fresh igneous rock at a depth between 43 meter and 55 meter. Further drilling was continued until 100 meter in depth. However, due to not encounter a new rock fractured zone causes the groundwater quantity did not improve even was drilled up to 100 meter depth. In the perspective of water resources, it showed a good potential for water resources for local usages at 104 m3 per day. In addition, the groundwater quality showed the water treatment was required to fulfil the criterion of the national drinking water standards. This study concluded that the first layer of fractured bedrock at UTHM was able to produce significant amounts of groundwater for local consumption usage.

  5. The Politics of Technocracy in Malaysia (1957-2012

    Directory of Open Access Journals (Sweden)

    JASON SEONG WEI LOH

    2016-05-01

    Full Text Available Malaysia’s technocracy (administrative elite and the government of the day (po- litical elite have had and continue to enjoy a harmonious and symbiotic relation-ship. Such synergy had its origins and background in British colonial rule when promising Malays were groomed for administrative positions. The dawn of merdeka (national independence allowed for the transition from administrative positions to political leadership. The first three prime ministers, namely Tunku Abdul Rahman, Abdul Razak and Hussein Onn were drawn from these ranks. There was an organic development in the relationship between the ‘old’ techno-crats and politicians expressed in shared strategic outlook and direction. As such, national development was characterised not by intermittent periods of political disruption but a sustained period of continuity in the pre-conditions for economic growth which extended and heightened throughout the premiership of Mahathir Mohamad. His successor, Abdullah Badawi, started to install corporate figures as technocrats to professionalise the governance of the administrative system. Under Najib Razak the role of these ‘new’ technocrats was further entrenched and enhanced.

  6. Ocena zmiany warunków hydrologicznych na terenach zurbanizowanych z wykorzystaniem technik GIS = GIS-based assessment of changes related to hydrological conditions in urban areas

    Directory of Open Access Journals (Sweden)

    Danuta Szumińska

    2015-05-01

    email: dszum@ukw.edu.pl1   Streszczenie   W artykule zaprezentowano możliwości wykorzystania technik GIS do przeprowadzenia analizy zmiany warunków hydrologicznych. Badania przeprowadzono na terenie zurbanizowanym, na którym dokonano zmian rzeźby oraz sposobu użytkowania terenu. Spowodowało to pojawieniem się problemów z odwodnieniem terenu, przede wszystkim w czasie wzmożonego zasilania z opadów deszczu i roztopów śniegu. W celu określenia przyczyn występujących problemów porównano rzeźbę terenu oraz wyznaczono kierunki odpływu wód powierzchniowych przed i po zagospodarowaniu działki d (Ryc. 1. Czasochłonne i kosztochłonne badania geologiczne wykonano w minimalnym zakresie (Tab. 1 i zostały one wykorzystane jako informacja uzupełniająca, pozwalająca na ocenę możliwości infiltracji wody w podłoże. Na podstawie przeprowadzonych badań stwierdzono, że główne przyczyny problemów z odwodnieniem terenu związane są ze stworzeniem barier w postaci podmurówek ogrodzeń zlokalizowanych prostopadle do kierunków odpływu wody (Fot. 1, Fot. 2. Zmiany rzeźby były w analizowanym przypadku czynnikiem mniej istotnym.   Słowa kluczowe: warunki hydrologiczne, infiltracja, model rzeźby terenu, kierunki odpływu, użytkowanie terenu, tereny zurbanizowane.   Abstract   The paper discusses the possibilities of employing GIS for conducting analysis of changes in hydrological conditions. The study was carried out in an urban area featuring altered relief and use of land. This caused problems with draining the terrain, particularly at times of increased rainwater and meltwater supply. In order to identify the causes of the occurring problems, we compared land relief prior and after the plot was developed, as well as indicated the directions of surface water runoff (Fig. 1. Time-consuming and expensive geological research activities were restricted to minimum (Tab. 2 and the data thus obtained were used as supplementary information to

  7. Popularity of Different Lampyrid Species in Japanese Culture as Measured by Google Search Volume

    Directory of Open Access Journals (Sweden)

    Kenta Takada

    2011-07-01

    Full Text Available I investigated the popularity of different lampyrid species (34 species in Japanese culture as part of a study on cultural entomology. Popularity was assessed by the Google search volume for Japanese lampyrid species names in katakana and hiragana scripts, using the Keyword Tool of Google AdWords. The search volume of lampyrid species as “Genji-botaru” (Luciola cruciata Motschulsky, “Heike-botaru” (Luciola lateralis Motschulsky and “Hime-botaru” (Hotaria parvula Kiesenwetter, in either or both katakana and hiragana syllabic scripts, was enormously high relative to other lampyrid species, indicating the biased attention of Japanese to these lampyrid species. In addition, search volumes for familial or common lampyrid name (“Hotaru” was assessed and compared with that of 34 lampyrid species. This analyzing result showed that: (1 the search volumes for katakana and hiragana were 37.7 and 773.1 times higher for “Hotaru” than “Genji-botaru”, respectively; and (2 the search volume for all lampyrid species was clearly higher in katakana than hiragana, whereas the search volumes for “Hotaru” were clearly higher in hiragana than katakana. These results suggest that: (1 the Japanese public tends to perceive lampyrids with not a clear but an ambiguous taxonomic view; and (2 the attitude of the Japanese public toward lampyrids differs between those who perceive lampyrids with a clear taxonomic view (at species level and with an ambiguous taxonomic view.

  8. Ruthenium(III) Complexes of Heterocyclic Tridentate (ONN) Schiff Base: Synthesis, Characterization and its Biological Properties as an Antiradical and Antiproliferative Agent

    Science.gov (United States)

    Ejidike, Ikechukwu P.; Ajibade, Peter A.

    2016-01-01

    The current work reports the synthesis, spectroscopic studies, antiradical and antiproliferative properties of four ruthenium(III) complexes of heterocyclic tridentate Schiff base bearing a simple 2′,4′-dihydroxyacetophenone functionality and ethylenediamine as the bridging ligand with RCHO moiety. The reaction of the tridentate ligands with RuCl3·3H2O lead to the formation of neutral complexes of the type [Ru(L)Cl2(H2O)] (where L = tridentate NNO ligands). The compounds were characterized by elemental analysis, UV-vis, conductivity measurements, FTIR spectroscopy and confirmed the proposed octahedral geometry around the Ru ion. The Ru(III) compounds showed antiradical potentials against 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals, with DPPH scavenging capability in the order: [(PAEBOD)RuCl2] > [(BZEBOD)RuCl2] > [(MOABOD)RuCl2] > [Vit. C] > [rutin] > [(METBOD)RuCl2], and ABTS radical in the order: [(PAEBOD)RuCl2] < [(MOABOD)RuCl2] < [(BZEBOD)RuCl2] < [(METBOD)RuCl2]. Furthermore, in vitro anti-proliferative activity was investigated against three human cancer cell lines: renal cancer cell (TK-10), melanoma cancer cell (UACC-62) and breast cancer cell (MCF-7) by SRB assay. PMID:26742030

  9. Ruthenium(III Complexes of Heterocyclic Tridentate (ONN Schiff Base: Synthesis, Characterization and its Biological Properties as an Antiradical and Antiproliferative Agent

    Directory of Open Access Journals (Sweden)

    Ikechukwu P. Ejidike

    2016-01-01

    Full Text Available The current work reports the synthesis, spectroscopic studies, antiradical and antiproliferative properties of four ruthenium(III complexes of heterocyclic tridentate Schiff base bearing a simple 2′,4′-dihydroxyacetophenone functionality and ethylenediamine as the bridging ligand with RCHO moiety. The reaction of the tridentate ligands with RuCl3·3H2O lead to the formation of neutral complexes of the type [Ru(LCl2(H2O] (where L = tridentate NNO ligands. The compounds were characterized by elemental analysis, UV-vis, conductivity measurements, FTIR spectroscopy and confirmed the proposed octahedral geometry around the Ru ion. The Ru(III compounds showed antiradical potentials against 2,2-Diphenyl-1-Picrylhydrazyl (DPPH and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS radicals, with DPPH scavenging capability in the order: [(PAEBODRuCl2] > [(BZEBODRuCl2] > [(MOABODRuCl2] > [Vit. C] > [rutin] > [(METBODRuCl2], and ABTS radical in the order: [(PAEBODRuCl2] < [(MOABODRuCl2] < [(BZEBODRuCl2] < [(METBODRuCl2]. Furthermore, in vitro anti-proliferative activity was investigated against three human cancer cell lines: renal cancer cell (TK-10, melanoma cancer cell (UACC-62 and breast cancer cell (MCF-7 by SRB assay.

  10. La Nuit des Chercheurs au CERN / Researchers' Night at CERN

    CERN Multimedia

    CERN. Geneva; Pohl, Martin; Paniccia, Mercedes

    2017-01-01

    Vendredi 29 septembre 2017 de 17h à 23h Entrée libre - pas d'inscription nécessaire. Depuis maintenant 8 ans, le Laboratoire ouvre ses portes en soirée au grand public, à l’occasion de cette fête scientifique. C’est un plaisir d’accueillir tous ces curieux et de partager les découvertes de la science, toutes plus étonnantes les unes que les autres. L’invention du Web en est une particulièrement intégrée au quotidien, mais il y en a tellement d’autres ! Venez découvrir cette science insoupçonnée et en prendre plein les yeux ! Le programme est prêt ! Nous sommes ravis de vous présenter toutes les activités que nous avons prévues pour vous, scientifiques en herbe, novices ou aficionados de tout âge . Il y aura même une surprise pour les 400 premiers visiteurs ! Activités sur le site du CERN Activités en ligne (Facebook Live) Nous avons hâte de vous accueillir !     ...

  11. Effect of Drought Stress onYield and Yield Components of Sesame cultivars under Kerman conditions (Sesamum indicum L.

    Directory of Open Access Journals (Sweden)

    S Farahbakhsh

    2015-04-01

    Full Text Available To investigate effects of drought stress on yield and yield components of sesame in Kerman region a split-plot experiment based onn compelet randomised block design with three replications was carried out in 1388. Irrigation levels (Normal irrigation in all growth stages, witholding water after 50% flowering, witholding water after 50% pod setting and differen t sesame landraces (Jiroft, Shiraz, Ardestan, Dezful, Shahr babak, Gorgan, Sirjan, Markazi, Birjand and Orzueieh were considered as main plots and sub-plots respectively. Plant height, the biggest pod length, noumber of grain per pod, noumber of pod per plant, grain weight per plant, thousand grain weight and grain yield were the measured traits. Results showed all the measured traits were significantly affected by the irrigation treatments. The effects of different landraces on all traits except noumber of grain per plant were significant. Irrigation × landraces interaction affected all measured traits except the biggest pod length significantly. The highest grain yield was recorde for Markezi landrace (845.2 kg –ha under normal irrigation and the lowest one was obtained from Jiroft landrace (104.8 kg –ha with witholding irrigation after 50% flowering.

  12. Students’ Perception on Teaching Practicum Evaluation using Video Technology

    Science.gov (United States)

    Chee Sern, Lai; ‘Ain Helan Nor, Nurul; Foong, Lee Ming; Hassan, Razali

    2017-08-01

    Video technology has been widely used in education especially in teaching and learning. However, the use of video technology for evaluation purpose especially in teaching practicum is extremely scarce and the benefits of video technology in teaching practicum evaluation have not yet been fully discovered. For that reason, this quantitative research aimed at identifying the perceptions of trainee teachers towards teaching practicum evaluation via video technology. A total of 260 students of Teacher Certification Programme (Program Pensiswazahan Guru - PPG) from the Faculty of Technical and Vocational Education (FPTV) of Universiti Tun Hussein Onn Malaysia (UTHM) had been randomly selected as respondents. A set of questionnaire was developed to assess the suitability, effectiveness and satisfaction of using video technology for teaching practicum. Conclusively, this research showed that the trainee teachers have positive perceptions in all three aspects related teaching practicum evaluation using video technology. Apart from that, no significant racial difference was found in the measured aspects. In addition, the trainee teachers also showed an understanding of the vast importance of teaching practicum evaluation via video. These research findings suggest that video technology can be a feasible and practical means of teaching practicum evaluation especially for distance learning program.

  13. Development of E-learning prototype for MUET assessment

    Science.gov (United States)

    Mit Anak Mawan, Amylia; Mohamed, Rozlini; Othman, Muhaini; Yusof, Munirah Mohd

    2017-08-01

    This paper aims to discuss the development of E-learning prototype for MUET assessment in Fakulti Sains Komputer dan Teknologi Maklumat (FSKTM), Universiti Tun Hussein Onn Malaysia (UTHM) namely, MUET Online System. The system is considered as a learning centre to study MUET examination that follows the MUET syllabus. The system will be used to assist students in making preparation before sitting for MUET examination. Before student can gain access to the system, students need to sign up and pay some fees before they are enrolled into virtual MUET class. The class will be guided by the English language lecturer from Faculty of Science, Technology and Human Development (FSTPI), UTHM as teacher. The system provides learning modules, quiz and test section. At the end of learning session students’ performance are assessed through quizzes and test measure the level of student understands. The teacher will evaluate the student’s mark and provide advices to the student. Therefore, the MUET Online System will be able to improve student knowledge in English language and subsequently help student to obtain the best result in MUET by providing more guided references and practices.

  14. Stochastic Boolean networks: An efficient approach to modeling gene regulatory networks

    Directory of Open Access Journals (Sweden)

    Liang Jinghang

    2012-08-01

    Full Text Available Abstract Background Various computational models have been of interest due to their use in the modelling of gene regulatory networks (GRNs. As a logical model, probabilistic Boolean networks (PBNs consider molecular and genetic noise, so the study of PBNs provides significant insights into the understanding of the dynamics of GRNs. This will ultimately lead to advances in developing therapeutic methods that intervene in the process of disease development and progression. The applications of PBNs, however, are hindered by the complexities involved in the computation of the state transition matrix and the steady-state distribution of a PBN. For a PBN with n genes and N Boolean networks, the complexity to compute the state transition matrix is O(nN22n or O(nN2n for a sparse matrix. Results This paper presents a novel implementation of PBNs based on the notions of stochastic logic and stochastic computation. This stochastic implementation of a PBN is referred to as a stochastic Boolean network (SBN. An SBN provides an accurate and efficient simulation of a PBN without and with random gene perturbation. The state transition matrix is computed in an SBN with a complexity of O(nL2n, where L is a factor related to the stochastic sequence length. Since the minimum sequence length required for obtaining an evaluation accuracy approximately increases in a polynomial order with the number of genes, n, and the number of Boolean networks, N, usually increases exponentially with n, L is typically smaller than N, especially in a network with a large number of genes. Hence, the computational efficiency of an SBN is primarily limited by the number of genes, but not directly by the total possible number of Boolean networks. Furthermore, a time-frame expanded SBN enables an efficient analysis of the steady-state distribution of a PBN. These findings are supported by the simulation results of a simplified p53 network, several randomly generated networks and a

  15. Medizinbibliotheken: inter:disziplinär – inter:national –inter:aktiv

    Directory of Open Access Journals (Sweden)

    Bauer, Bruno

    2017-12-01

    Full Text Available The focus of the current issue 3/2017 of GMS Medizin – Bibliothek – Information is the annual conference 2017 of the German Medical Libraries Association in Vienna. The motto of the conference was “Medical Libraries: inter:disciplinary – inter:national – inter:active”. The authors in this issue are Bruno Bauer (Austrian Transition to Open Access 2017–2020, Beata Górczynska (Development and structure of Polish veterinary school system and its libraries, Katharina Heldt, Henriette Senst & Jessica Riedel (Salon on the institute’s history: outstanding artifacts. 28.01.2016 to 15.12.2016, Jutta Matrisciano, Martina Semmler-Schmetz & Saskia Rohmer (Advice – From info snack to special menu: Solutions of the MedMA-Bib, Stefan Nortmann (The ‘Ersti-Café’ of the Medical Branch Library Münster, Sandra Rümmele (Toolbox: The new teaching library project of the Central Medical Library of the University Medical Center Hamburg-Eppendorf, Eva Seidlmayer & Christoph Poley (One Health – Transdisciplinarity at ZB MED and Heike Andermann (“Medical Libraries: inter:disciplinary – inter:national – inter:active”. Annual Meeting of the German Medical Library Association (AGMB, September 25 to 27, 2017 in Vienna. Furthermore this focus issue features articles from Stefan Grün & Christoph Poley (Statistical evaluation of semantic entities from metadata and full text on German Medical Science corpora and Iris Reimann (German MLA News; Competition of the German MLA Pioneer projects in medical libraries 2017: Introduction of the winners; Competition of the German MLA (AGMB Pioneer projects in medical libraries 2018 – Announcement.

  16. Assessment of indoor air quality in comparison using air conditioning and fan system in printing premise

    Directory of Open Access Journals (Sweden)

    Ramlan Nazirah

    2017-01-01

    Full Text Available Printers contribute to various emissions consist with chemical contaminants. High concentration of the particulate matter can cause serious health problems. This study focuses on the indoor air quality in printing premise unit in Universiti Tun Hussein Onn, Malaysia. Field testing involving air sampling methods were taken from 900 hours to 1600 hours, for every 30 minutes using physical measurement which is Multi-Channel Air Quality Monitor (YESAIR, E-Sampler and Ozone Meter. Air sampling was recorded based on one sampling point and most suitable point for production. A comparison based on different ventilation using fan and air-conditioning were also taken and results is being compared based on OSHA and NIOSH standards. Besides that, the statistical analysis is being conducted in order to predict the effect on number of printers. From the result, the O3 concentrations show, 10% reduced for printing premise using fan ventilation compared to air-conditioning but remain the same value for PM2.5. The concentration of O3 increased when the number of printers decreased, while the concentration of PM2.5 increased the increase of printers number. Overall, the use of fan in printing premise is more suggested since the level is slightly lower than the printing premise using air-conditioning.

  17. Probing the string winding sector

    Energy Technology Data Exchange (ETDEWEB)

    Aldazabal, Gerardo; Mayo, Martín [G. Física CAB-CNEA and CONICET, Centro Atómico Bariloche,Av. Bustillo 9500, Bariloche (Argentina); Instituto Balseiro, Centro Atómico Bariloche,Av. Bustillo 9500, Bariloche (Argentina); Nuñez, Carmen [Instituto de Astronomía y Física del Espacio (CONICET-UBA),C.C. 67 - Suc. 28, 1428 Buenos Aires (Argentina); Departamento de Física, FCEN, Universidad de Buenos Aires,C.C. 67 - Suc. 28, 1428 Buenos Aires (Argentina)

    2017-03-17

    We probe a slice of the massive winding sector of bosonic string theory from toroidal compactifications of Double Field Theory (DFT). This string subsector corresponds to states containing one left and one right moving oscillators. We perform a generalized Kaluza Klein compactification of DFT on generic 2n-dimensional toroidal constant backgrounds and show that, up to third order in fluctuations, the theory coincides with the corresponding effective theory of the bosonic string compactified on n-dimensional toroidal constant backgrounds, obtained from three-point amplitudes. The comparison between both theories is facilitated by noticing that generalized diffeomorphisms in DFT allow to fix generalized harmonic gauge conditions that help in identifying the physical degrees of freedom. These conditions manifest as conformal anomaly cancellation requirements on the string theory side. The explicit expression for the gauge invariant effective action containing the physical massless sector (gravity+antisymmetric+gauge+ scalar fields) coupled to towers of generalized Kaluza Klein massive states (corresponding to compact momentum and winding modes) is found. The action acquires a very compact form when written in terms of fields carrying O(n,n) indices, and is explicitly T-duality invariant. The global algebra associated to the generalized Kaluza Klein compactification is discussed.

  18. Mathématiques en liberté liberté, réalité, responsabilité

    CERN Document Server

    Cartier, Pierre; Heinzmann, Gerhard; Villani, Cédric

    2012-01-01

    Les mathématiques sont bien plus qu'une science, tant elles ont acquis un statut central et tout à fait particulier. Elles sont à la fois un langage permettant d articuler la réalité et un outil qui façonne le réel, et jouent à ce titre un rôle clé dans le développement des sciences de la nature, des sciences humaines et sociales, et de l'industrie. Leur position centrale dans les mécanismes de sélection et de reproduction qui caractérisent l'enseignement en France en fait par ailleurs un enjeu social majeur. L'essence des mathématiques, c'est la liberté, disait Georg Cantor. Quelles sont les nouvelles frontières, les nouveaux défis de cette science qui ne s'impose aucune limite ? Comment cette science de l'abstraction s'inscrit-elle au coeur de la réalité, au point d'être incontournable ? Quel rôle, quelle place, quelle responsabilité s'assignent les mathématiciens ? Deux mathématiciens, Pierre Cartier qui fut l'un des piliers du fameux groupe Bourbaki et Cédric Villani, un des repr...

  19. A standardized way to select, evaluate, and test an analog-to-digital converter for ultrawide bandwidth radiofrequency signals based on user's needs, ideal, published,and actual specifications

    Science.gov (United States)

    Chang, Daniel Y.; Rowe, Neil C.

    2012-06-01

    The most important adverse impact on the Electronic Warfare (EW) simulation is that the number of signal sources that can be tested simultaneously is relatively small. When the number of signal sources increases, the analog hardware, complexity and costs grow by the order of N2, since the number of connections among N components is O(N*N) and the signal communication is bi-directional. To solve this problem, digitization of the signal is suggested. In digitizing a radiofrequency signal, an Analog-to-Digital Converter (ADC) is widely used. Most research studies on ADCs are conducted from designer/test engineers' perspective. Some research studies are conducted from market's perspective. This paper presents a generic way to select, evaluate and test ultra high bandwidth COTS ADCs and generate requirements for digitizing continuous time signals from the perspective of user's needs. Based on user's needs, as well as vendor's published, ideal and actual specifications, a decision can be made in selecting a proper ADC for an application. To support our arguments and illustrate the methodology, we evaluate a Tektronix TADC-1000, an 8-bit and 12 gigasamples per second ADC. This project is funded by JEWEL lab, NAWCWD at Point Mugu, CA.

  20. Analysis the Accuracy of Digital Elevation Model (DEM) for Flood Modelling on Lowland Area

    Science.gov (United States)

    Zainol Abidin, Ku Hasna Zainurin Ku; Razi, Mohd Adib Mohammad; Bukari, Saifullizan Mohd

    2018-04-01

    Flood is one type of natural disaster that occurs almost every year in Malaysia. Commonly the lowland areas are the worst affected areas. This kind of disaster is controllable by using an accurate data for proposing any kinds of solutions. Elevation data is one of the data used to produce solutions for flooding. Currently, the research about the application of Digital Elevation Model (DEM) in hydrology was increased where this kind of model will identify the elevation for required areas. University of Tun Hussein Onn Malaysia is one of the lowland areas which facing flood problems on 2006. Therefore, this area was chosen in order to produce DEM which focussed on University Health Centre (PKU) and drainage area around Civil and Environment Faculty (FKAAS). Unmanned Aerial Vehicle used to collect aerial photos data then undergoes a process of generating DEM according to three types of accuracy and quality from Agisoft PhotoScan software. The higher the level of accuracy and quality of DEM produced, the longer time taken to generate a DEM. The reading of the errors created while producing the DEM shows almost 0.01 different. Therefore, it has been identified there are some important parameters which influenced the accuracy of DEM.

  1. The Physical Behavior of Stabilised Soft Clay by Electrokinetic Stabilisation Technology

    Science.gov (United States)

    Azhar, A. T. S.; Nordin, N. S.; Azmi, M. A. M.; Embong, Z.; Sunar, N.; Hazreek, Z. A. M.; Aziman, M.

    2018-04-01

    Electrokinetic Stabilisation (EKS) technology is the combination processes of electroosmosis and chemical grouting. This technique is most effective in silty and clayey soils where the hydraulic conductivity is very low. Stabilising agents will assist the EKS treatment by inducing it into soil under direct current. The movement of stabilising agents into soil is governed by the principle of electrokinetics. The aim of this study is to evaluate the physical behavior of soft soil using the EKS technology as an effective method to strengthen soft clay soils with calcium chloride (CaCl2) as the stabilising agent. Stainless steel plates were used as the electrodes, while 1.0 mol/l of CaCl2 was used as the electrolyte that fed at the anode compartment. Soft marine clay at Universiti Tun Hussein Onn Malaysia was used as the soil sample. The EKS treatment was developed at Research Centre for Soft Soil (RECESS), UTHM with a constant voltage gradient (50 V/m) in 21 days. The result shows that the shear strength of treated soil was increased across the soil sample. The treated soil near the cathode showed the highest value of shear strength (24.5 – 33 kPa) compared with the anode and in the middle of the soil sample.

  2. A new tridentate Schiff base Cu(II) complex: synthesis, experimental and theoretical studies on its crystal structure, FT-IR and UV-Visible spectra.

    Science.gov (United States)

    Saheb, Vahid; Sheikhshoaie, Iran; Setoodeh, Nasim; Rudbari, Hadi Amiri; Bruno, Giuseppe

    2013-06-01

    A new Cu(II) complex [Cu(L)(NCS)] has been synthesized, using 1-(N-salicylideneimino)-2-(N,N-methyl)-aminoethane as tridentate ONN donor Schiff base ligand (HL). The dark green crystals of the compound are used for single-crystal X-ray analysis and measuring Fourier Transform Infrared (FT-IR) and UV-Visible spectra. Electronic structure calculations at the B3LYP and MP2 levels of theory are performed to optimize the molecular geometry and to calculate the UV-Visible and FT-IR spectra of the compound. Vibrational assignments and analysis of the fundamental modes of the compound are performed. Time-dependent density functional theory (TD-DFT) method is used to calculate the electronic transitions of the complex. A scaling factor of 1.015 is obtained for vibrational frequencies computed at the B3LYP level using basis sets 6-311G(d,p). It is found that solvent has a profound effect on the electronic absorption spectrum. The UV-Visible spectrum of the complex recorded in DMSO and DMF solution can be correctly predicted by a model in which DMSO and DMF molecules are coordinated to the central Cu atom via their oxygen atoms. Copyright © 2013 Elsevier B.V. All rights reserved.

  3. Saddam Hussein et la débâcle triomphante. Les ressources insoupçonnées de Umm al-Ma‘ârik

    Directory of Open Access Journals (Sweden)

    Peter Harling

    2007-07-01

    Full Text Available Les performances du régime irakien tout au long de la crise de 1991 ont suscité deux types de lectures opposées. Pour le sens commun, il s’agissait d’une défaite incontestable. Pourtant, Saddam Hussein, de son côté, l’a qualifiée de « Mère des Batailles » (Umm al-Ma‘ârik et de triomphe absolu. Une telle exagération est plus que le simple produit de l’imagination d’un despote. Il le pensait en effet si bien qu’il a, en 2003, élaboré sa stratégie de défense sur le modèle de 1991. Plus significativement, la réponse du régime aux défis qu’il avait lui-même fabriqués en envahissant le Koweit suggère que la crise de 1991 était elle-même la voie de sortie d’une crise plus structurelle à laquelle Saddam Hussein aurait eu toutes les chances de succomber. Cet article explore plusieurs aspects méconnus de ce moment historique. Premièrement, il relie les évènements de 1991 à la banqueroute économique, institutionnelle et symbolique du régime. Deuxièmement, il attire l’attention sur sa réponse complexe à la situation. Troisièmement, il analyse en détail la métamorphose du régime grâce aux ressources offertes par la crise, qui l’ont incité à perpétuer un « régime de crise », devenu la condition paradoxale de la stabilité du régime.

  4. The most common problem facing by the maintenance department: A case Study between Universiti Tun Hussein Onn Malaysia (UTHM) and Universiti Teknologi Malaysia (UTM)

    Science.gov (United States)

    Norazam Yasin, Mohd; Mohamad Zin, Rosli; Halid Abdullah, Abd; Shafiq Mahmad, Muhammad; Fikri Hasmori, Muhammad

    2017-11-01

    From time to time, the maintenance works become more challenging due to construction of new building and also aging of the existing buildings. University buildings without any exception require proper maintenance services to support their function requirements and this can be considered as major responsibilities to be fulfilled by the maintenance department in the universities. Maintenance department specifically will face various kinds of problems in their operation works and thus this might influence the maintenance work operations itself. This study purposely to identify the common problem facing by the maintenance department and also to examine the current status of the maintenance department. In addition, this study would also propose any suitable approach that could be implemented to overcome the problem facing by the maintenance department. To achieve the objectives of this study, a combination of deep literature study and carrying out a survey is necessary. Literature study aimed to obtain deeper information about this study, meanwhile a survey aimed at identifying the common problem facing by the maintenance department and also to provide the information of the maintenance department’s organization. Several methods will be used in analyzing the data obtained through the survey, including Microsoft Office Excel and also using mean index formula. This study has identified three categories of problem in the maintenance department, which are management problems, human resource problem, and technical problems. Following the findings, several solutions being proposed which can be implemented as the solution to the problem facing. These suggestions have the potential to improve the maintenance department work efficiency, thus could help to increase the department productivity.

  5. Effects of Cigarettes Smoking on Pulmonary Function among University Students

    Directory of Open Access Journals (Sweden)

    Hariri Azian

    2017-01-01

    Full Text Available Pulmonary function testing is a physiological test that measures how an individual inhales or exhales volumes of air as a function of time. Smoking is greatly associated with reduction of pulmonary function. This research is aimed to estimate the values of peak expiratory flow (PEF, forced expiratory volume in first second (FEV1, forced vital capacity (FVC and ratio between FEV1/FVC among smoking and non-smoking students in Universiti Tun Hussein Onn Malaysia. Smoking is often related to obstructive disorder with low value of FVC, FEV1 and FEV1/FVC. These pulmonary functions were analyzed based on several variables such as; the number of cigarette smoked per day, duration of smoking, age, and body mass index (BMI values. 70 healthy volunteers consist of smoking and non- smoking students was selected through several sessions. Students were interviewed to answer questionnaire on demographic, lifestyles and their smoking habit. The pulmonary function tests were conducted according to American Thoracic Society (ATS standards. The results of the pulmonary functions were analyzed by using SPSS software to compare the pulmonary functions between the smoker and the non-smoker students. The results of the studies showed that the number of cigarettes smoked by respondent and the BMI values were the significant predictors of the decrease in FEV1/FVC values among university students

  6. Le chaos et l'harmonie la fabrication du Réel

    CERN Document Server

    Xuan Thuan, Trinh

    1998-01-01

    Cette fin de siècle a vu un véritable bouleversement dans notre façon de concevoir le monde. Après avoir dominé la pensée occidentale pendant trois cents ans, la vision newtonienne d'un univers fragmenté, mécaniste et déterministe a fait place à celle d'un monde exubérant de créativité. Le Réel n'est plus déterminé seulement par des lois naturelles appliquées à des conditions initiales particulières, mais aussi moulé et façonné par une suite d'événements contingents et historiques qui peuvent bouleverser la réalité à son niveau le plus profond. Celui du bolide rocailleux venu percuter la Terre il y a quelque 65 millions d'années et responsable de la mort des dinosaures en est un exemple. Les lois physiques ont perdu leur rigidité. Avec l'avènement de la mécanique quantique, le hasard est entré en force dans le monde subatomique. Le monde macroscopique n'a pas été épargné. Avec la théorie du chaos, le hasard et le non-déterminisme ont envahi non seulement la vie de tous le...

  7. Development of superconducting power devices in Europe

    International Nuclear Information System (INIS)

    Tixador, Pascal

    2010-01-01

    Europe celebrated last year (2008) the 100-year anniversary of the first liquefaction of helium by H. Kammerling Onnes in Leiden. It led to the discovery of superconductivity in 1911. Europe is still active in the development of superconducting (SC) devices. The discovery of high critical temperature materials in 1986, again in Europe, has opened a lot of opportunities for SC devices by broking the 4 K cryogenic bottleneck. Electric networks experience deep changes due to the emergence of dispersed generation (renewable among other) and to the advances in ICT (Information Communication Technologies). The networks of the future will be 'smart grids'. Superconductivity will offer 'smart' devices for these grids like FCL (Fault Current Limiter) or VLI (Very Low Inductance) cable and would certainly play an important part. Superconductivity also will participate to the required sustainable development by lowering the losses and enhancing the mass specific powers. Different SC projects in Europe will be presented (Cable, FCL, SMES, Flywheel and Electrical Machine) but the description is not exhaustive. Nexans has commercialized the first two FCLs without public funds in the European grid (UK and Germany). The Amsterdam HTS cable is an exciting challenge in term of losses for long SC cables. European companies (Nexans, Air Liquide, Siemens, Converteam, ...) are also very active for projects outside Europe (LIPA, DOE FCL, ...).

  8. Soft Skills in Pedagogical Practices with Different Curriculum for Engineering Education

    Science.gov (United States)

    Mohamad, M. M.; Yee, M. H.; Tee, T. K.; Mukhtar, M. Ibrahim; Ahmad, A.

    2017-08-01

    The rapid growth of the economy in Malaysia is a benchmark for the country’s progress. The demand for skilled worker has started to increase from year to year resulted in the implementation of reforms and necessary skills will be applied to each of the graduates who will step into the nature of work. Therefore, a study was conducted to identify the level of soft skills among students in higher education institutions. The study was conducted at the Universiti Tun Hussein Onn Malaysia (UTHM) and involved 302 samples of final year students from Faculty of Civil Engineering, Faculty of Mechanical Engineering and the Faculty of Electrical Engineering. There are several types of soft skills have been viewed on the students such as creative thinking skills, teamwork skills, communication skills, decision-making skills, interpersonal skills and leadership skills. The analysis results show that all of the soft skills are on the high level. Furthermore, the results of ANOVA showed a significant difference in soft skills mastery among Civil Engineering students and Mechanical Engineering students. As a conclusion, the overall level of soft skills mastery among Faculty of Civil Engineering, Faculty of Mechanical Engineering and the Faculty of Electrical Engineering students is on the high level. The soft skills elements are very important in order to produce skills workers that suitable with the industry.

  9. Formation mechanism of NDMA from ranitidine, trimethylamine, and other tertiary amines during chloramination: a computational study.

    Science.gov (United States)

    Liu, Yong Dong; Selbes, Meric; Zeng, Chengchu; Zhong, Rugang; Karanfil, Tanju

    2014-01-01

    Chloramination of drinking waters has been associated with N-nitrosodimethylamine (NDMA) formation as a disinfection byproduct. NDMA is classified as a probable carcinogen and thus its formation during chloramination has recently become the focus of considerable research interest. In this study, the formation mechanisms of NDMA from ranitidine and trimethylamine (TMA), as models of tertiary amines, during chloramination were investigated by using density functional theory (DFT). A new four-step formation pathway of NDMA was proposed involving nucleophilic substitution by chloramine, oxidation, and dehydration followed by nitrosation. The results suggested that nitrosation reaction is the rate-limiting step and determines the NDMA yield for tertiary amines. When 45 other tertiary amines were examined, the proposed mechanism was found to be more applicable to aromatic tertiary amines, and there may be still some additional factors or pathways that need to be considered for aliphatic tertiary amines. The heterolytic ONN(Me)2-R(+) bond dissociation energy to release NDMA and carbocation R(+) was found to be a criterion for evaluating the reactivity of aromatic tertiary amines. A structure-activity study indicates that tertiary amines with benzyl, aromatic heterocyclic ring, and diene-substituted methenyl adjacent to the DMA moiety are potentially significant NDMA precursors. The findings of this study are helpful for understanding NDMA formation mechanism and predicting NDMA yield of a precursor.

  10. Simplified Method for Groundwater Treatment Using Dilution and Ceramic Filter

    Science.gov (United States)

    Musa, S.; Ariff, N. A.; Kadir, M. N. Abdul; Denan, F.

    2016-07-01

    Groundwater is one of the natural resources that is not susceptible to pollutants. However, increasing activities of municipal, industrial, agricultural or extreme land use activities have resulted in groundwater contamination as occured at the Research Centre for Soft Soil Malaysia (RECESS), Universiti Tun Hussein Onn Malaysia (UTHM). Thus, aims of this study is to treat groundwater by using rainwater and simple ceramic filter as a treatment agent. The treatment uses rain water dilution, ceramic filters and combined method of dilute and filtering as an alternate treatment which are simple and more practical compared to modern or chemical methods. The water went through dilution treatment processes able to get rid of 57% reduction compared to initial condition. Meanwhile, the water that passes through the filtering process successfully get rid of as much as 86% groundwater parameters where only chloride does not pass the standard. Favorable results for the combination methods of dilution and filtration methods that can succesfully eliminate 100% parameters that donot pass the standards of the Ministry of Health and the Interim National Drinking Water Quality Standard such as those found in groundwater in RECESS, UTHM especially sulfate and chloride. As a result, it allows the raw water that will use clean drinking water and safe. It also proves that the method used in this study is very effective in improving the quality of groundwater.

  11. La filière huile d’olive en Tunisie

    Directory of Open Access Journals (Sweden)

    Gharbi Ines

    2014-03-01

    Full Text Available L’olivier a façonné, au fil des millénaires, les paysages, l’histoire, la culture et la gastronomie du bassin méditerranéen qui est encore aujourd’hui le cœur productif et commercial de l’huile d’olive. La Tunisie est le pays oléicole le plus important du Sud de la Méditerranée. Si l’on exclut l’Union européenne, la Tunisie est la plus grande puissance mondiale dans le secteur de l’huile d’olive, déployant de grands efforts de restructuration, de modernisation et d’amélioration de la qualité de ses huiles, accompagnés d’une considérable expansion de surfaces. L’enjeu sera pour la Tunisie d’assurer un ajustement permanent de sa politique oléicole et d’élaborer et mettre en œuvre des stratégies concurrentielles lui permettant de profiter de ces nouvelles opportunités et de renforcer sa compétitivité. La présente étude, qui s’insère dans le cadre de cette préoccupation, a pour objectif d’affiner cette connaissance. Elle se propose d’étudier la filière huile d’olive tunisienne et les possibilités d’amélioration de ses performances.

  12. Usability of the Upper Limb Risk Assessment (UPLIRA Method for Assessing the Risk Factors of Upper Limb Disorders

    Directory of Open Access Journals (Sweden)

    Abd Razak Noor Syafiqa

    2017-01-01

    Full Text Available It is important to design ergonomic methods or assessment with a high usability and good ergonomic features, so the method is easily adaptable to the task and the workplace environment. Usability is a measurement on how well the user can use that functionality. The study converged on testing the usability of the new tools for assessing ULDs namely as Upper Limb Risk Assessment (UPLIRA. The UPLIRA method was evaluated by 6 students (3 undergraduate students and 3 postgraduates students from University Tun Hussein Onn Malaysia (UTHM who are conducting research in ergonomic. From the feedback survey of UPLIRA method, the observers agree that the prototype of UPLIRA tool was applicable to workplace assessment for the wide range of jobs/task (mean 4.00, SD:0.632 with 83% percentage of agreement . They also indicate that UPLIRA method is quick to use (mean 3.67, SD:1.033 with percentage agreement of 67%. The scoring system and action level was rated as easy to understand (mean 3.67, SD:1.211 and (mean 4.17, SD:0.408. Conclusively, the UPLIRA method was rated as straightforward to use, applicable to wide range of tasks, and time saving as assessment can be completed within 10 minutes. In addition, the UPLIRA assessment covers an extensive range of physical, psychosocial, work organizational, and individual risk factors.

  13. An important role of temperature dependent scattering time in understanding the high temperature thermoelectric behavior of strongly correlated system: La0.75Ba0.25CoO3.

    Science.gov (United States)

    Singh, Saurabh; Kumar, Devendra; Pandey, Sudhir K

    2017-03-15

    In the present work, we report the temperature dependent thermopower (α) behavior of La 0.75 Ba 0.25 CoO 3 compound in the temperature range 300-600 K. Using the Heikes formula, the estimated value of α corresponding to high-spin configuration of Co 3+ and Co 4+ ions is found to be  ∼16 [Formula: see text], which is close to the experimental value, ∼13 [Formula: see text], observed at  ∼600 K. The temperature dependent TE behavior of the compound is studied by combining the WIEN2K and BoltzTrap code. The self consistency field calculations show that the compound have ferromagnetic ground state structure. The electronic structure calculations give half metallic characteristic with a small gap of  ∼50 meV for down spin channel. The large and positive value for down spin channel is obtained due to the unique band structure shown by this spin channel. The temperature dependent relaxation time for both the spin-channel charge carriers is considered to study the thermopower data in temperature range 300-600 K. For evaluation of α, almost linear values of [Formula: see text] and a non-linear values of [Formula: see text] are taken into account. By taking the temperature dependent values of relaxation time for both the spin channels, the calculated values of α using two current model are found to be in good agreement with experimental values in the temperature range 300-600 K. At 300 K, the calculated value of electrical conductivity by using the same value of relaxation time, i.e. 0.1 [Formula: see text] 10 -14 seconds for spin-up and [Formula: see text] seconds for spin-dn channel, is found to be equal to the experimentally reported value.

  14. Influence of Saccharomyces boulardii CNCM I-745 on the gut-associated immune system

    Directory of Open Access Journals (Sweden)

    Stier H

    2016-09-01

    Full Text Available Heike Stier,1 Stephan C Bischoff2 1analyze & realize GmbH, Berlin, 2Department of Clinical Nutrition, University of Hohenheim, Stuttgart, Germany Background: The probiotic Saccharomyces boulardii CNCM I-745 (also known as Saccharomyces cerevisiae HANSEN CBS 5926; in the following S. boulardii has proven its effectiveness in preventive and therapeutic treatment of many gastrointestinal diseases, especially diseases associated with acute diarrhea. In particular, antibiotic-associated diarrhea, Clostridium difficile-associated diarrhea, traveller’s diarrhea, as well as acute diarrhea due to common viral and bacterial infections in children and adults.Aim: The aim of this review is to summarize the experimental studies elucidating the molecular and immunological mechanisms by which these clinically proven effects are archived, with an emphasis on the gut-associated immune system. The main focus is laid on anti-inflammatory and immune-modulatory action of S. boulardii involved in bacterial or enterotoxin-mediated diarrhea and inflammation. An attempt is made to differentiate between the effects associated with cellular versus soluble factors and between prophylactic and therapeutic effects.Methods: A literature search was performed in PubMed/PubMed Central for the effects of S. boulardii on the gut-associated immune system (focus acute diarrhea. Results and conclusion: S. boulardii exhibits its positive effect by the direct effects on pathogens or their toxins as well as by influencing the host’s infection-induced signaling cascades and its innate and adaptive immune system. The combination of these mechanisms results in a reduction of the pathogens’ ability for adhesion or colonization and an attenuation of the overreacting inflammatory immune response. Thereby, the integrity of the intestinal epithelial cell layer is preserved or restored, and the diarrheic leakage of fluids into the intestinal lumen is attenuated. Keywords: mode of action

  15. 2. symposium energy crops 2009; 2. Symposium Energiepflanzen 2009

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-27

    Within the meeting '2nd Symposium energy plants 2009', held at 17th to 18th November, 2009, in Berlin (Federal Republic of Germany), the following lectures were held: (1) The bio energy policy of the Federal Government in the area of attention between climatic protection, ecology and economy (Ilse Aigner); (2) Chances and threatens of cultivation of energy plants for a sustainable energy supply (Alois Heissenhuber); (3) Certification as a prerequisite of the global exploration of bio energy (Andreas Feige); (4) A project support in the field of cultivation of energy plants, a review (Andreas Schuette); (5) Results from the investigation of the crop rotation in the EVA network (Armin Vater); (6) Optimisation of the cultivation technology of sorghum millets (Christian Roehricht); (7) The two-culture utilization system - a comparison between ecologic and conventional cultivation (Reinhold Stuelpnagel); (8) Crop rotation with energy plants - Chances and threatens for the plant protection (Baerbel Gerowitt); (9) Efficiency of utilization of water for energy plants (Siegfried Schittenhelm); (10) Utilization of arable food grasses and permanent grassland as a substrate for biogas (Matthias Benke); (11) Economical evaluation of plant fermentation substrates (Dominik Reus); (12) Energy plants as a challenge for the agricultural engineering (Heiner Bruening); (13) Influence of the design of cultivation on the subsequent effects of the cultivation of energy plants (Michael Glemnitz); (14) Energy plants and waters protection - Key aspects and possible options of action (Heike Nitsch); (15) Neophytes as energy plants - Chances and threatens (Werner Kuhn); (16) Manifold in te landscape - extensive cultivation systems with renewable raw materials as an option for nature protection? (Peer Heck); (17) Ecologic aspects of agro forestry systems (Holger Gruenewald); (18) Enhancement of the potential of energy yield of winter wheat (Wolfgang Friedt); (19) Interspersed silphie

  16. A new trinuclear Zn(II) complex {[Zn(μ-ONN)(μ.sub.2./sub.-O)(μ-OO)].sub.2./sub.Zn}: Synthesis, characterization, thermal decomposition and antibacterial activity

    Czech Academy of Sciences Publication Activity Database

    Far, B.S.; Grivani, G.; Khalaji, A.D.; Khorshidi, M.; Eigner, Václav; Dušek, Michal

    2017-01-01

    Roč. 28, č. 6 (2017), s. 3217-3227 ISSN 1040-7278 R&D Projects: GA ČR(CZ) GA14-03276S Institutional support: RVO:68378271 Keywords : trinuclear complex * Schiff base * single-crystal structure analysis * ZnO nano particle * antibacterial activity Subject RIV: BM - Solid Matter Physics ; Magnetism OBOR OECD: Condensed matter physics (including formerly solid state physics, supercond.) Impact factor: 1.471, year: 2016

  17. La robe et les mortiers. Joseph-Marie de Villespassans, magistrat faux-monnayeur (1713

    Directory of Open Access Journals (Sweden)

    Mathieu Soula

    2011-12-01

    Full Text Available Au début du XVIIIe siècle, un magistrat toulousain, le conseiller de Villepassans, est soupçonné d’être à la tête d’un réseau de faux-monnayeurs. L’affaire est sensible pour le parlement, qui instruit directement l’affaire, car il s’agit de poursuivre l’un de ses membres. Un magistrat faux-monnayeur est en effet une « figure » criminelle qui trouble et pose question. Par contagion, la mauvaise renommée de Villepassans peut atteindre les autres conseillers et porter le discrédit sur une institution qui se définit comme « le vrai vengeur des crimes ». Dans ces conditions, comment le parlement traite-t-il l’affaire, et quelle figure criminelle appose-t-il à Villespassans ? L’étude de ce cas atypique peut ainsi aider à mieux comprendre l’enjeu de la construction d’une identité criminelle.In early 18th century, a magistrate of the parliament of Toulouse, Joseph-Marie de Villespassans, is suspected of being the leader of forgers of money. This case is highly dangerous for the parliament, who’s in charge. The culpability of the magistrate-forger can also touch the others magistrates, and the prestige of the institution to. So, in these conditions, how can the parliament manage this case? I this research, we’re trying to study this atypical case in the way the parliament built the culpability.

  18. Saving the “Undoomed Man” In Beowulf (572b-573

    Directory of Open Access Journals (Sweden)

    Anderson Salena Sampson

    2015-01-01

    Full Text Available The maxim Wyrd oft nereð // unfӕgne eorl, / þonne his ellen deah “Fate often spares an undoomed man when his courage avails” (Beowulf 572b-573 has been likened to “Fortune favors the brave,” with little attention to the word unfӕgne, which is often translated “undoomed”. This comparison between proverbs emphasizes personal agency and suggests a contrast between the proverb in 572b-573 and the maxim Gӕð a wyrd swa hio scel “Goes always fate as it must” (Beowulf 455b, which depicts an inexorable wyrd. This paper presents the history of this view and argues that linguistic analysis and further attention to Germanic cognates of (unfӕge reveal a proverb that harmonizes with 455b. (Unfӕge and its cognates have meanings related to being brave or cowardly, blessed or accursed, and doomed or undoomed. A similar Old Norse proverb also speaks to the significance of the status of unfӕge men. Furthermore, the prenominal position of unfӕgne is argued to represent a characterizing property of the man. The word unfӕgne is essential to the meaning of this proverb as it indicates not the simple absence of being doomed but the presence of a more complex quality. This interpretive point is significant in that it provides more information about the portrayal of wyrd in Beowulf by clarifying a well-known proverb in the text; it also has implications for future translations of these verses.

  19. Dispute resolution by Courts and Dispute resolution in court. Partners or rivals?

    Directory of Open Access Journals (Sweden)

    Kristin Hero

    2011-12-01

    Full Text Available This session of the workshop was dedicated to alternative dispute resolutions (ADR, which consists of dispute resolution processes and techniques through which disagreeing parties come to an agreement without having to litigate. Despite historic resistance, over the years ADR has gained widespread acceptance among both the general public and the legal profession. In the discussion there was a specific emphasis on mediation and arbitration. Kathrin Nitschmann, a lawyer and mediator from Saarbruecken, Germany, talked about “Professionalisation in mediation”. In addition to participation aspects she determined both the risks and the perspectives of professionalization in mediation. Luigi Cominelli, Assistant Professor of Sociology of Law at the University of Milan, Italy, reported on “Regulating Mediation in the EU”. He described the history of regulating mediation in the EU as well as domestic regulations since the beginning of modern mediation movement in the western world since the 1970s. Claude Witz, a French civil law professor at the University of Saarland, Germany, referred to “His experience in arbitration.” After highlighting some aspects of his experience, he pointed out the importance of arbitration in international commercial disputes. Alec Stone Sweet, Leitner Professor of Law, Politics, and International Studies, Yale Law School, United States, was reporting on “Arbitration and judicialization.” Initially, he presented arbitration as a triadic dispute resolution and then focused on judizialization in arbitration. Sir David Edward, former Judge of the Court of Justice of the European Communities and Professor Emeritus of the School of Law of the University of Edinburgh, United Kingdom, spoke about “The view of an arbitrator.” While elaborating on multiple reasons for ADR, he honed focus on mediation and arbitration. Finally Heike Jung, Professor Emeritus of Penal Law of the University of the Saarland, Germany

  20. Google (encore) encore soupçonné d'abus de position dominante : Observations sur la Communication des griefs de la Commission Européenne du 20 avril 2016

    OpenAIRE

    Mouron , Philippe

    2016-01-01

    National audience; La Commission, dans cette communication du 20 avril 2016, énonce plusieurs griefs à l'encontre de Google, ceux-ci pouvant faire état d’un abus de position dominante :- les contrats passés avec les fabricants d’appareils mobiles subordonneraient l’octroi de licences pour des applications propriétaires (telles que Playstore) à la préinstallation d’autres applications, dont les plus essentielles pour l’utilisation des smartphones et tablettes (Google Search ou Chrome) ;- ces m...

  1. Titanium dioxide (TIO2) thin film and plasma properties in RF magnetron sputtering

    International Nuclear Information System (INIS)

    Ali, Riyaz Ahmad Mohamed; Nayan, Nafarizal

    2013-01-01

    Lately, titanium dioxide (TiO 2 ) films with anatase crystalline property received numerous attentions as unique material properties. There are wide applications of TiO 2 thin film such as for photocatalytic application in solar cell. In the present study, radio frequency (RF) magnetron sputtering technique has been used to produce high dense, homogeneously controllable film layer at low deposition temperature using titanium (Ti) target. The diameter of the Ti target is 3 inch with fixed discharge power of 400W. Magnetron sputtering plasma has been produced in high purity 99.99% Argon (Ar) and 99.99% Oxygen (O 2 ) environment pressure ranging from 5 to 20 mTorr. The TiO2 were growth on silicon and glass substrates. Substrate temperature during deposition was kept constant at 400°C. The distance between target and substrate holder was maintain at 14 cm with rotation of 10 rotation-per-minutes. Our X-ray diffraction result, shows anatase crystalline successfully formed with characterization peaks of plane (101) at 2θ = 25.28°, plane (202) at 2θ = 48.05° and plane (211) at 2θ = 55.06°. In addition, it is our interest to study the plasma properties and optical spectrum of Ti, Ti+ , O- , ArM and Ar+ in the chamber during the deposition process. Result of emission line intensities, electron density and temperature from optical spectroscope and Langmuir probe will be discuss further during the workshop. This works were supported by Graduate Incentive Scheme of Universiti Tun Hussein Onn Malaysia (UTHM) and Fundamental Research Grant Scheme of Ministry of Higher Education, Malaysia. (author)

  2. Mało energochłonna utylizacja zasolonych wód kopalnianych w zintegrowanym systemie membranowo – wyparnym

    Directory of Open Access Journals (Sweden)

    Marian Turek

    2018-03-01

    Full Text Available Przedstawiono rozwiązanie, w którym woda zasolona poddawana jest wstępnemu uzdatnianiu metodą nanofiltracji (NF a następnie zatężaniu metodą wyparną lub w zintegrowanym układzie elektrodializa – odwrócona osmoza i dalszemu odparowaniu z krystalizacją chlorku sodu. Na przykładzie solanki z KWK Budryk wykazano, że uzysk soli, dzięki samemu zastosowaniu nanofiltracji, można zwiększyć z obecnej wartości 72,01% do 87,35%, a po dalszym usprawnieniu, polegającym na oczyszczaniu chemicznym, do 91,11% a nawet 99,1%. Wstępne uzdatnianie solanki metodą nanofiltracji, prowadzone w sposób opracowany przez Autorów w warunkach dużego przesycenia siarczanem wapnia z częściową recyrkulacją retentatu i kontrolowaną krystalizacją gipsu, daje możliwość zastosowania mało energochłonnych rozwiązań zatężania solanki. Na przykładzie solanki Budryk wykazano, że zużycie energii w procesie jej utylizacji można zmniejszyć z obecnych 888,7 kWh/t soli do 433,7-451,2 kWh/t soli, w przypadku zatężania solanki mało energochłonną metodą wyparną lub do 396,8 kWh/t soli w przypadku zatężania solanki w zintegrowanym układzie: elektrodializa – odwrócona osmoza. Proponowane rozwiązanie ma zostać przebadane w instalacji pilotowej w ramach projektu NANOS, finansowanego w programie TANGO2.

  3. Contribution à l'étude de murs maçonnés renforcés par matériaux composites (FRP et TRC) : application aux sollicitations dans le plan

    OpenAIRE

    Bui , Thi Loan

    2014-01-01

    This study, using both experimental and numerical approaches, will help to better understand the behaviour of masonry walls. It especially focuses on walls reinforced with composite materials under in-plane loading conditions. In France, more stringent seismic design requirements for building structures have taken effect. So, this research has been initiated in an effort to define reliable strengthening techniques. The selected reinforcement materials are (1) – fiber reinforced polymer (FRP) ...

  4. Performance of local correlation methods for halogen bonding: The case of Br2-(H2O)n,n = 4,5 clusters and Br2@5(12)6(2) clathrate cage.

    Science.gov (United States)

    Batista-Romero, Fidel A; Pajón-Suárez, Pedro; Bernal-Uruchurtu, Margarita I; Hernández-Lamoneda, Ramón

    2015-09-07

    The performance of local correlation methods is examined for the interactions present in clusters of bromine with water where the combined effect of hydrogen bonding (HB), halogen bonding (XB), and hydrogen-halogen (HX) interactions lead to many interesting properties. Local methods reproduce all the subtleties involved such as many-body effects and dispersion contributions provided that specific methodological steps are followed. Additionally, they predict optimized geometries that are nearly free of basis set superposition error that lead to improved estimates of spectroscopic properties. Taking advantage of the local correlation energy partitioning scheme, we compare the different interaction environments present in small clusters and those inside the 5(12)6(2) clathrate cage. This analysis allows a clear identification of the reasons supporting the use of local methods for large systems where non-covalent interactions play a key role.

  5. El discutido influjo de la Historia Roderici en el Cantar de mio Cid

    Directory of Open Access Journals (Sweden)

    Salvatore Luongo

    2013-06-01

    Full Text Available La hipótesis de una relación entre el Cantar de mio Cid y la Historia Roderici ha suscitado, como es sabido, una discusión animada que a día de hoy todavía no ha cesado. La presente contribución pretende volver a examinar la cuestión analizando de nuevo dos pasajes de la biografía poética de Rodrigo Díaz para los que se sospecha que se utilizó su biografía historiográfica: la exposición del conflicto con el conde barcelonés Ramón Berenguer y la exposición de la victoria del Campeador sobre el rey de Marruecos Yūsuf. El análisis revela una serie de correspondencias a distintos niveles (de organización estructural, de contenido, de unidades conceptuales menores, fraseológico, verbal que parecería confirmar un contacto directo entre los dos textos.L’hypothèse d’un rapport entre le Cantar de mio Cid et l’Historia Roderici a soulevé, comme on sait, une querelle vive et encore irrésolue. Cette étude se propose de revisiter la question en soumettant à un nouvel examen deux passages de la biographie poétique de Rodrigo Díaz pour lesquels l’utilisation de sa biographie historiographique a été soupçonnée: le récit du conflit avec le comte Barcelonais Ramón Berenguer et celui de la victoire du Campeador sur le roi du Maroc Yūsuf. L’analyse révèle une série de corrélations à plusieurs niveaux (d’organisation structurelle, de contenu, d’unités conceptuelles mineures, phraséologique, verbal qui semblerait confirmer un contact direct entre les deux textes.

  6. Les moulins du Clos du Cotentin : contribution à l’étude d’un facteur et indicateur de l’évolution du territoire et de ses contingences naturelles et anthropiques

    Directory of Open Access Journals (Sweden)

    Benoît Canu

    2012-02-01

    Full Text Available Témoins souvent oubliés d’usages révolus, les moulins qui constellaient les cartes anciennes du Cotentin ont, jusqu’après leur abandon et celui de leur voirie ou de leurs biefs, durablement marqué les paysages. Assis sur leur chaussée, appuyés à la motte castrale ou isolés en fond de vallon, moulins à eau puis minoteries ont rendu méconnaissable le cours initial des rivières jusque dans les estuaires où la topographie façonnée par les moulins à marée n’est plus lisible. Quant aux moulins à vent, indicateurs de milieux jadis plus ouverts (labours laniérés ou landes rases, leur « architecture-machine » animait le relief avec d’autant plus de singularité que des tourelles d’un type primitif, peut-être inventé ici même, y portaient encore au XIXe siècle, d’énigmatiques cages de mouture.The mills which are to be seen scattered over the old maps of the Cotentin Peninsula bear witness to forgotten customs. They left their mark on local landscapes even after they had been abandoned and the roads leading to them were no longer frequented. Whether they were simple water-mills or industrial flour-mills, they had a dramatic influence on the water courses on which they were located and on the estuaries, the form of which was often shaped by tide-mills mills which are no longer visible today. The windmills, with their ‘machine-architecture’ gave life to the hilltops. Their unusual primitive turrets which, still flanked by amazing milling cages in the 19th century, may have been invented in this region.

  7. The new superconductors: Prospects for applications

    International Nuclear Information System (INIS)

    Wolsky, A.M.; Giese, R.F.; Daniels, E.J.

    1989-01-01

    Two years ago several groups around the world, excited by the discovery by K. Alex Mueller and J. Georg Bednorz of the IBM Zurich Research Laboratory of a superconducting ceramic oxide, developed an yttrium-barium-copper oxide that superconducted at 90 K. Since then other investigators have found two separate families of copper oxides, one incorporating bismuth and the other thallium, that superconduct at between 110 and 120 K. These high-temperature superconductors could be cooled to 77 degrees K with liquid nitrogen, which is cheap and abundant. This immediately suggested that certain applications of superconductivity long considered not to be economic or practical might be feasible. Yet many of the envisioned applications-generators and motors, energy storage, magnetically levitating trains-raise the same issues to which Onnes referred. It is not yet known whether the new materials can be made easily workable-strong and flexible enough to fashion into wire and other useful forms. Nor is it known whether they can be made to carry large currents and operate in intense magnetic fields. Whether the new discoveries will prove fruitful will depend on the progress made toward achieving design requirements for known applications and on identifying new applications as yet unforeseen. Indeed, such new applications may well have the greater impact. No one foresaw today's most important commercial use of superconductivity, magnetic-resonance imaging for medical diagnosis, in the 1960's, when niobium-3-tin and niobium-titanium were found to remain superconducting while carrying high currents in the presence of sizable magnetic fields. Leaving aside the unforeseen, an informed view of the economic and technical advantages of the new superconductors can help guide attempts to achieve the applications now being envisioned

  8. Influences de la symphonie concertante sur la musique de la Cour parisienne sous l'Empire et la Restauration (1800-1830

    Directory of Open Access Journals (Sweden)

    Dratwicki, Alexandre

    2003-12-01

    Full Text Available The origins of the very much appreciated "symphonie concertante" can be found in the importance of public concerts given in Paris at the end of the 18th century. The specific repertoire played at the French Court during the years 1800-1830 distinctly shows this vogue for the "symphonie concertante", for it reveals the still unknown importance of virtuosity. Considered as an musical entertainment for the pompous parties at the French Court or as an musical accompaniment for the masses given at the Imperial and Royal Chapel, this "decorative concertant syle" became an essential part of the Regime etiquette during the Napoleonic empire as well as the Restoration period. This music, perfectly incorporated into the official guidelines, will disappear as a consequence of the political events of 1830 and the arrival of a new aesthetic movement, the Romanticism.

    [fr] La vogue du concert public à Paris, à la fin du XVIIIe siècle, fut à l'origine de l'essor phénoménal que connut la symphonie concertante. Le répertoire de la musique de la Cour - entre 1800 et 1830 - est particulièrement représentatif de cette mode : il révèle une place encore insoupçonnée laissée à la virtuosité. Agrémentant les messes de la Chapelle ou les bals donnés lors de fastueuses soirées, ce « style concertant décoratif » devint un élément constitutif de l'apparat gouvernemental sous l'Empire et la Restauration. Une sorte d'académisme officiel que les événements politiques de 1830 et l'essor du romantisme musical feront définitivement disparaître.

  9. Structural health monitoring on medium rise reinforced concrete building using ambient vibration method

    Science.gov (United States)

    Kamarudin, A. F.; Mokhatar, S. N.; Zainal Abidin, M. H.; Daud, M. E.; Rosli, M. S.; Ibrahim, A.; Ibrahim, Z.; Noh, M. S. Md

    2018-04-01

    Monitoring of structural health from initial stage of building construction to its serviceability is an ideal practise to assess for any structural defects or damages. Structural integrity could be intruded by natural destruction or structural deterioration, and worse if without remedy action on monitoring, building re-assessment or maintenance is taken. In this study the application of ambient vibration (AV) testing is utilized to evaluate the health of eighth stories medium rise reinforced concrete building in Universiti Tun Hussein Onn Malaysia (UTHM), based comparison made between the predominant frequency, fo, determined in year 2012 and 2017. For determination of fo, popular method of Fourier Amplitude Spectra (FAS) was used to transform the ambient vibration time series by using 1 Hz tri-axial seismometer sensors and City SharkII data recorder. From the results, it shows the first mode frequencies from FAS curves indicate at 2.04 Hz in 2012 and 1.97 Hz in 2017 with only 3.14% of frequency reduction. However, steady state frequencies shown at the second and third modes frequencies of 2.42 Hz and 3.31 Hz by both years. Two translation mode shapes were found at the first and second mode frequencies in the North-South (NS-parallel to building transverse axis) and East-West (EsW-parallel to building longitudinal axis) components, and the torsional mode shape shows as the third mode frequency in both years. No excessive deformation amplitude was found at any selective floors based on comparison made between three mode shapes produced, that could bring to potential feature of structural deterioration. Low percentages of natural frequency disparity within five years of duration interval shown by the first mode frequencies under ambient vibration technique was considered in good health state, according to previous researchers recommendation at acceptable percentages below 5 to 10% over the years.

  10. Synthesis, spectral, thermal, potentiometric and antimicrobial studies of transition metal complexes of tridentate ligand

    Directory of Open Access Journals (Sweden)

    Sarika M. Jadhav

    2014-01-01

    Full Text Available A series of metal complexes of Cu(II, Ni(II, Co(II, Fe(III and Mn(II have been synthesized with newly synthesized biologically active tridentate ligand. The ligand was synthesized by condensation of dehydroacetic acid (3-acetyl-6-methyl-(2H pyran-2,4(3H-dione or DHA, o-phenylene diamine and fluoro benzaldehyde and characterized by elemental analysis, molar conductivity, magnetic susceptibility, thermal analysis, X-ray diffraction, IR, 1H-NMR, UV–Vis spectroscopy and mass spectra. From the analytical data, the stoichiometry of the complexes was found to be 1:2 (metal:ligand with octahedral geometry. The molar conductance values suggest the non-electrolyte nature of metal complexes. The IR spectral data suggest that the ligand behaves as a dibasic tridentate ligand with ONN donor atoms sequence towards central metal ion. Thermal behaviour (TG/DTA and kinetic parameters calculated by the Coats–Redfern and Horowitz–Metzger method suggest more ordered activated state in complex formation. To investigate the relationship between stability constants of metal complexes and antimicrobial activity, the dissociation constants of Schiff bases and stability constants of their binary metal complexes have been determined potentiometrically in THF–water (60:40% solution at 25 ± 1 °C and at 0.1 M NaClO4 ionic strength. The potentiometric study suggests 1:1 and 1:2 complexation. Antibacterial and antifungal activities in vitro were performed against Staphylococcus aureus, Escherichia coli and Aspergillus niger, Trichoderma, respectively. The stability constants of the metal complexes were calculated by the Irving–Rosotti method. A relation between the stability constant and antimicrobial activity of complexes has been discussed. It is observed that the activity enhances upon complexation and the order of antifungal activity is in accordance with stability order of metal ions.

  11. Students paperwork tracking system (SPATRASE)

    Science.gov (United States)

    Ishak, I. Y.; Othman, M. B.; Talib, Rahmat; Ilyas, M. A.

    2017-09-01

    This paper focused on a system for tracking the status of the paperwork using the Near Field Communication (NFC) technology and mobile apps. Student paperwork tracking system or known as SPATRASE was developed to ease the user to track the location status of the paperwork. The current problem faced by the user is the process of approval paperwork takes around a month or more. The process took around a month to get full approval from the department because of many procedures that need to be done. Nevertheless, the user cannot know the location status of the paperwork immediately because of the inefficient manual system. The submitter needs to call the student affairs department to get the information about the location status of the paperwork. Thus, this project was purposed as an alternative to solve the waiting time of the paperwork location status. The prototype of this system involved the hardware and software. The project consists of NFC tags, RFID Reader, and mobile apps. At each checkpoint, the RFID Reader was placed on the secretary desk. While the system involved the development of database using Google Docs that linked to the web server. After that, the submitter received the URL link and be directed to the web server and mobile apps. This system is capable of checking their location status tracking using mobile apps and Google Docs. With this system, it makes the tracking process become efficient and reliable to know the paperwork at the exact location. Thus, it is preventing the submitter to call the department all the time. Generally, this project is fully functional and we hope it can help Universiti Tun Hussein Onn Malaysia (UTHM) to overcome the problem of paperwork missing and location of the paperwork.

  12. Correlation between MRI results and intraoperative findings in patients with silicone breast implants

    Directory of Open Access Journals (Sweden)

    Lindenblatt N

    2014-07-01

    Full Text Available Nicole Lindenblatt,1 Karem El-Rabadi,2 Thomas H Helbich,2 Heinrich Czembirek,3 Maria Deutinger,4 Heike Benditte-Klepetko5 1Division of Plastic and Hand Surgery, Department of Surgery, University Hospital Zurich, Zurich, Switzerland; 2Department of Biomedical Imaging and Image-guided Therapy, Division of Molecular and Gender Imaging, Medical University of Vienna - General Hospital Vienna, 3Department of Radiology, Hospital Wiener Privatklinik, 4Department of Plastic and Reconstructive Surgery, Hospital Rudolfstiftung, Vienna, Austria; 5Department of Plastic and Reconstructive Surgery, Erasmus Medical Center, Rotterdam, the Netherlands Background: Silicone gel breast implants may silently rupture without detection. This has been the main reason for magnetic resonance imaging (MRI of the augmented or reconstructed breast. The aim of the present study was to investigate the accuracy of MRI for implant rupture. Methods: Fifty consecutive patients with 85 silicone gel implants were included in the study. The mean age of the patients was 51 (range 21–72 years, with a mean duration of implantation of 3.8 (range 1–28 years. All patients underwent clinical examination and breast MRI. Intraoperative implant rupture was diagnosed by the operating surgeon. Results: Nineteen of the 50 patients suffered from clinical symptoms. An implant rupture was diagnosed by MRI in 22 of 85 implants (26%. In seven of 17 removed implants (41%, the intraoperative diagnosis corresponded with the positive MRI result. However, only 57% of these patients were symptomatic. Ultrasound imaging of the harvested implants showed signs of interrupted inner layers of the implant despite integrity of the outer shell. By microsurgical separation of the different layers of the implant shell, we were able to reproduce this phenomenon and to produce signs of implant rupture on MRI. Conclusion: Our results show that rupture of only the inner layers of the implant shell with integrity of

  13. Thermodynamic Processes Involving Liquefied Natural Gas at the LNG Receiving Terminals / Procesy termodynamiczne z wykorzystaniem skroplonego gazu ziemnego w terminalach odbiorczych LNG

    Science.gov (United States)

    Łaciak, Mariusz

    2013-06-01

    The increase in demand for natural gas in the world, cause that the production of liquefied natural gas (LNG) and in consequences its regasification becoming more common process related to its transportation. Liquefied gas is transported in the tanks at a temperature of about 111K at atmospheric pressure. The process required to convert LNG from a liquid to a gas phase for further pipeline transport, allows the use of exergy of LNG to various applications, including for electricity generation. Exergy analysis is a well known technique for analyzing irreversible losses in a separate process. It allows to specify the distribution, the source and size of the irreversible losses in energy systems, and thus provide guidelines for energy efficiency. Because both the LNG regasification and liquefaction of natural gas are energy intensive, exergy analysis process is essential for designing highly efficient cryogenic installations. Wzrost zapotrzebowania na gaz ziemny na świecie powoduje, że produkcja skroplonego gazu ziemnego (LNG), a w konsekwencji jego regazyfikacja, staje się coraz bardziej powszechnym procesem związanym z jego transportem. Skroplony gaz transportowany jest w zbiornikach w temperaturze około 111K pod ciśnieniem atmosferycznym. Przebieg procesu regazyfikacji niezbędny do zamiany LNG z fazy ciekłej w gazową dla dalszego transportu w sieci, umożliwia wykorzystanie egzergii LNG do różnych zastosowań, między innymi do produkcji energii elektrycznej. Analiza egzergii jest znaną techniką analizowania nieodwracalnych strat w wydzielonym procesie. Pozwala na określenie dystrybucji, źródła i wielkości nieodwracalnych strat w systemach energetycznych, a więc ustalić wytyczne dotyczące efektywnego zużycia energii. Ponieważ zarówno regazyfikacja LNG jak i skraplanie gazu ziemnego są energochłonne, proces analizy egzergii jest niezbędny do projektowania wysoce wydajnych instalacji kriogenicznych.

  14. Influence of Traffic Vehicles Against Ground Fundamental Frequency Prediction using Ambient Vibration Technique

    Science.gov (United States)

    Kamarudin, A. F.; Noh, M. S. Md; Mokhatar, S. N.; Anuar, M. A. Mohd; Ibrahim, A.; Ibrahim, Z.; Daud, M. E.

    2018-04-01

    Ambient vibration (AV) technique is widely used nowadays for ground fundamental frequency prediction. This technique is easy, quick, non-destructive, less operator required and reliable result. The input motions of ambient vibration are originally collected from surrounding natural and artificial excitations. But, careful data acquisition controlled must be implemented to reduce the intrusion of short period noise that could imply the quality of frequency prediction of an investigated site. In this study, investigation on the primary noise intrusion under peak (morning, afternoon and evening) and off peak (early morning) traffic flows (only 8 meter from sensor to road shoulder) against the stability and quality of ground fundamental frequency prediction were carried out. None of specific standard is available for AV data acquisition and processing. Thus, some field and processing parameters recommended by previous studies and guideline were considered. Two units of 1 Hz tri-axial seismometer sensor were closely positioned in front of the main entrance Universiti Tun Hussein Onn Malaysia. 15 minutes of recording length were taken during peak and off peak periods of traffic flows. All passing vehicles were counted and grouped into four classes. Three components of ambient vibration time series recorded in the North-South: NS, East-West: EW and vertical: UD directions were automatically computed into Horizontal to Vertical Spectral Ratio (HVSR), by using open source software of GEOPSY for fundamental ground frequency, Fo determination. Single sharp peak pattern of HVSR curves have been obtained at peak frequencies between 1.33 to 1.38 Hz which classified under soft to dense soil classification. Even identical HVSR curves pattern with close frequencies prediction were obtained under both periods of AV measurement, however the total numbers of stable and quality windows selected for HVSR computation were significantly different but both have satisfied the requirement

  15. Batu Pahat Driving Cycle for Light Duty Gasoline Engine

    Science.gov (United States)

    Zainul Abidin, Zainul Ameerul Ikhsan B.; Faisal Hushim, Mohd; Ahmad, Osman Bin

    2017-08-01

    Driving cycle is a series of data points that represents the vehicle speed versus time. Transient driving cycles involve many changes such as frequent speed changes during typical on-road driving condition [2]. Model driving cycles involve protracted periods at constant speeds. The Batu Pahat Driving Cycle (BPDC) developed to represent the driving pattern of people in a district of Batu Pahat. Based on this driving cycle, it will be a reference to other researchers to study about the gases emission release and fuel consumption by the vehicle on the dynamometer or automotive simulation based on this driving cycle. Existing driving cycles used such as the New European Driving Cycle (NEDC), the Federal Test Procedure (FTP-72/75, and Japan 10-15 Mode Cycle is not appropriate for Batu Pahat district because of different road conditions, driving habits and environmental of developed driving cycle countries are not same [2][14]. Batu Pahat drive cycle was developed for low-capacity gasoline engine under 150 cc and operating on urban roads, rural roads and road around Universiti Tun Hussein Onn. The importance of these driving cycle as the reference for other research to measure and do automotive simulation regarding fuel consumption and gas emission release from the motorcycle for these three type of driving cycle area. Another use for driving cycles is in vehicle simulations [3]. More specifically, they are used in propulsion system simulations to predict the performance of internal combustion engines, transmissions, electric drive systems, batteries, fuel cell systems, and similar components [18]. Data collection methods used in this study is the use of Global Positioning System (GPS). The results obtained are not similar to each other due to differences in congestion on data taken. From the driving cycle graph obtained, such as the average velocity, maximum velocity, the duration and Positive Acceleration Kinetic Energy (PKE) can be determined. In addition, the best

  16. Genre et dynamique organisationnelle au Moyen Atlas : cas du douar Maâmar dans la région de Khénifra

    Directory of Open Access Journals (Sweden)

    Fatima Zahid

    2014-03-01

    Full Text Available Le droit au développement semble animer tous les efforts visant à promouvoir la montagne marocaine, dans toutes ses dimensions politiques, sociales, organisationnelles à travers des projets de développement dont le plus réputé au Moyen Atlas est le projet MEDA-Khénifra. Ses actions diverses et ambitieuses ont façonné un douar de la région par de nouvelles organisations qui ont impacté les relations sociales et en particulier les relations du genre. Nous analysons à travers ce cas l’impact des projets de développement sur les relations du genre et l’empowerment des femmes dans cet espace. Les enquêtes ont été menées sous forme de questionnaires et d’entretiens collectifs. Le projet a créé deux organisations formelles : une association de développement et une coopérative pour la valorisation des plantes aromatiques et médicinales. Les femmes n’ont pas été impliquées dans ces organisations et certaines d’entre elles ont été invitées à participer à deux groupements informels. Le premier, pour la production de plantes aromatiques et médicinales, est resté sous la tutelle des organisations formelles gérées par les hommes. L’autre, dédié à l’apiculture, est plus autonome et a mieux réussi. Par ailleurs, la montée en puissance des organisations formelles a conduit à une moindre capacité d’action des femmes au niveau du village, car elles n’ont plus sur ces organisations les droits qu’elles ont traditionnellement dans le cadre de la jmâa. Cette expérience montre qu’un projet de développement peut influencer négativement les relations de genre malgré les bonnes volontés. La réflexion sur la question de genre doit alors impérativement animer l’ensemble des actions des projets de développement.

  17. Le recours aux archives judiciaires pour étudier les habitudes de sommeil

    Directory of Open Access Journals (Sweden)

    Guillaume Garnier

    2009-10-01

    Full Text Available Les archives judiciaires possèdent de nombreux attraits, et certains sont parfois insoupçonnés. Les faits relatés dans les actes d’accusation par exemple, mais aussi les déclarations de témoins recèlent de petits détails sur les habitudes de sommeil qui passent souvent inaperçus aux yeux des historiens. Dans un corpus très large (du XVIIIe au xixe siècle on peut ainsi tenter de comprendre les logiques de sommeil : heures de coucher et lever, durée du sommeil, l’apparente vulnérabilité du repos nocturne, les déviances nocturnes, le lieu de sommeil. Mais dans une vue plus globale, les archives aident aussi à déterminer les rythmes nocturnes et notamment la place qu’y tient le sommeil. Les contraintes sociales et politiques, la dureté du travail et de la vie, l’importance de la religion transparaissent aussi pour former une culture spécifique du sommeil préindustriel.Judiciary records have many appealing aspects, some of which one would not suspect. What is related in indictment documents for instance, as well as in evidence statements, contains small details about sleeping habits that often go unnoticed by historians. Out of a very large corpus (from the xviiith till the xixth century, one can try and work out the rationale behind sleep: at what time people go to sleep or wake up, for how long, how vulnerable night sleep seems to be, nocturnal deviances, or where people sleep. But to a larger extent, records also help to determine nocturnal rhythms and more specifically the place that sleep holds in them. Social and political constraints, harshness of working and living conditions, the importance of religion, all show through and convey a specific culture of pre-industrial sleep.

  18. Maladies reliées aux loisirs aquatiques

    Science.gov (United States)

    Sanborn, Margaret; Takaro, Tim

    2013-01-01

    Résumé Objectif Passer en revue les facteurs de risque, la prise en charge et la prévention des maladies reliées aux loisirs aquatiques en pratique familiale. Sources des données Des articles originaux et de synthèse entre janvier 1998 et février 2012 ont été identifiés à l’aide de PubMed et des expressions de recherche en anglais water-related illness, recreational water illness et swimmer illness. Message principal Il y a un risque de 3 % à 8 % de maladies gastrointestinales (MGI) après la baignade. Les groupes à risque élevé de MGI sont les enfants de moins de 5 ans, surtout s’ils n’ont pas été vaccinés contre le rotavirus, les personnes âgées et les patients immunodéficients. Les enfants sont à plus grand risque parce qu’ils avalent plus d’eau quand ils nagent, restent dans l’eau plus longtemps et jouent dans l’eau peu profonde et le sable qui sont plus contaminés. Les adeptes des sports dans lesquels le contact avec l’eau est abondant comme le triathlon et le surf cerf-volant sont aussi à risque élevé et même ceux qui s’adonnent à des activités impliquant un contact partiel avec l’eau comme la navigation de plaisance et la pêche ont un risque de 40 % à 50 % fois plus grand de MGI par rapport à ceux qui ne pratiquent pas de sports aquatiques. Il y a lieu de faire une culture des selles quand on soupçonne une maladie reliée aux loisirs aquatiques et l’échelle clinique de la déshydratation est utile pour l’évaluation des besoins de traitement chez les enfants affectés. Conclusion Les maladies reliées aux loisirs aquatiques est la principale cause de MGI durant la saison des baignades. La reconnaissance que la baignade est une source importante de maladies peut aider à prévenir les cas récurrents et secondaires. On recommande fortement le vaccin contre le rotavirus chez les enfants qui se baignent souvent.

  19. Proceedings of the 8th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology

    Science.gov (United States)

    Ishioka, Sachio; Fujikawa, Kazuo

    2006-06-01

    .]. Coalescence and rearrangement of vortices in mesoscopic superconductors / A. Kanda ... [et al.]. Superconductivity in topologically nontrivial spaces / M. Hayashi ... [et al.]. DC-SQUID ratchet using atomic point contact / Y. Ootuka, H. Miyazaki, A. Kanda. Superconducting wire network under spatially modulated magnetic field / H. Sano ... [et al.]. Simple and stable control of mechanical break junction for the study of superconducting atomic point contact / H. Miyazaki ... [et al.]. Critical currents in quasiperiodic pinning arrays: one-dimensional chains and Penrose lattices / V. R. Misko, S. Savel'ev, F. Nori. Macroscopic quantum tunneling in high-Tc superconductor Josephson junctions / S. Kawabata -- Novel properties of carbon nanotubes. Carbon nanotubes and unique transport properties: importance of symmetry and channel number / T. Ando. Optical processes in single-walled carbon nanotubes threaded by a magnetic flux / J. Kono ... [et al.]. Non-equilibrium transport through a single-walled carbon nanotube with highly transparent coupling to reservoirs / P. Recher, N. Y. Kim, Y. Yamamoto -- Novel properties of nano-systems. Transport properties in low dimensional artificial lattice of gold nano-particles / S. Saito ... [et al.]. First principles study of dihydride-chain structures on H-terminated Si(100) surface / Y. Suwa ... [et al.]. Electrical property of Ag nanowires fabricated on hydrogen-terminated Si(100) surface / M. Fujimori, S. Heike, T. Hashizume. Effect of environment on ionization of excited atoms embedded in a solid-state cavity / M. Ando ... [et al.]. Development of universal virtual spectroscope for optoelectronics research: first principles software replacing dielectric constant measurements / T. Hamada ... [et al.]. Quantum Nernst effect / H Nakamura, N. Hatano, R. Shirasaki -- Precise measurements. Quantum phenomena visualized using electron waves / A. Tonomura. An optical lattice clock: ultrastable atomic clock with engineered perturbation / H. Katori

  20. Shaping of the Yunnan-Burma Frontier by Secret Societies since the End of the 17th Century Comment les sociétés secrètes ont façonné la frontière birmano-yunnanaise

    Directory of Open Access Journals (Sweden)

    Ma Jianxiong

    2012-10-01

    Full Text Available After the 1680s, Big Vehicle Religion gradually developed on the Yunnan-Burma frontier. It was banned by the Qing government and became a sect of Chinese secret societies. The founders of this religion combined various Buddhist and Taoist elements together and claimed this to be the route to their salvation. They also trained many students to be monks. After the Sino-Burma wars these monks established a Five Buddha Districts system among the Lahu and some Wa villages in western Mekong River, until the system was destroyed by the Qing government in the 1880s. The monks became leaders of the Luohei/Lahu through millenarianism and many Han immigrants also became involved in the movements to become the Lahu or the Wa. The monks performed critical roles as social activists in Lahu cultural reconstruction. As a shaping power, their human agency was deeply integrated into secret societies and they formulated regional political centers as well as a network mechanism for the floating indigenous populations. Secret societies clearly shaped a historical framework for local politics and economic flux in the Yunnan-Burma frontier and became a cross-border mechanism for contemporary life after the border between Yunnan, Burma and Thailand was decided. However, it used to be a networking dynamic linked with silver and copper minefields, Sino-Burma wars, and anti-Qing millenarianism. Local people could also use this frontier space for their negotiations with different states before the coming of European colonialism.Après les années 1680, le bouddhisme du grand véhicule se développa sur la frontière birmano-yunnanaise. Le gouvernement des Qing l’interdit mais il devint une secte diffusée par des sociétés secrètes. Les fondateurs de cette religion combinèrent des éléments bouddhistes et taoïstes et prétendirent que c’était la voie du salut. Ils formèrent également des élèves pour en faire des moines. Après les guerres sino-birmanes, ces moines établirent un système de cinq districts du Bouddha parmi les Lahu et certains villages Wa de l’ouest du Mékong, jusqu’à ce que ce système soit détruit par le gouvernement des Qing dans les années 1880. Ces moines devinrent des leaders des Luohei/lahu dans des mouvements millénaristes et de nombreux immigrants Han participèrent à ces mouvements pour devenir des Lahu ou des Wa. Ces moines tinrent des rôles critiques comme activistes sociaux dans la reconstruction culturelle lahu. En tant que pouvoir actif, leur action humaine fut profondément liée à des sociétés secrètes et ils instituèrent des centres politiques régionaux ainsi qu’un mécanisme de réseau pour des populations indigènes fluctuantes. À l’évidence, des sociétés secrètes donnèrent forme à un cadre historique pour la politique locale et les flux économiques à la frontière birmano-yunnanaise et devinrent un mécanisme transfrontalier pour la vie quotidienne après l’établissement de frontières entre le Yunnan, la Birmanie et la Thaïlande. Il s’agissait de fait d’un réseau dynamique lié aux mines d’argent et de cuivre, aux guerres sino-birmanes, ainsi qu’à un millénarisme anti-Qing. Les populations locales pouvaient également utiliser cet espace frontalier pour négocier avec les divers États avant l’établissement du colonialisme européen.

  1. Fédéralisme et droits des LGBT aux États-Unis et au Canada : analyse comparatives des politiques

    Directory of Open Access Journals (Sweden)

    Miriam Smith

    2014-12-01

    Full Text Available L’article examine le militantisme LGBT et les résultats des politiques en matière de droit pénal et du mariage entre personnes de même sexe de 1969 à aujourd’hui, dans le cadre d’une analyse comparée du fédéralisme aux États-Unis et au Canada. Nous soutiendrons que le fédéralisme a grandement façonné les politiques publiques relatives aux droits des LGBT. Dans le régime américain, le potentiel d’expansion du fédéralisme a favorisé les changements graduels de politiques dans les États et, parallèlement, les multiples points de véto créés par le système de séparation des pouvoirs conjugués aux compétences conférés aux États dans d’importants domaines de politiques ont entravé ces changements de politiques. Dans le régime canadien, la centralisation des mécanismes de protection des droits de la personne dans la Charte de même que la dynamique descendante de l’exercice du pouvoir dans le régime parlementaire de type Westminster ont facilité les changements de politiques. Le fédéralisme est souvent perçu comme un obstacle à l’adoption de politiques progressistes. La répartition des pouvoirs entrave l’élaboration de politiques cohérentes et prête le flanc à la prolifération de vétos dont peuvent se prévaloir des groupes influents pour freiner le changement. Les critiques de cette perspective arguent depuis longtemps que, même si le fédéralisme multiplie les points de véto, il présente aussi de nombreuses possibilités d’innovation. Ils font valoir que les groupes ont plus de poids dans les régimes fédéraux puisqu’ils peuvent exercer leur influence à deux paliers de gouvernement plutôt qu’à un. Ainsi, un groupe qui ne réussit pas à se faire entendre à l’un des paliers pourra tenter sa chance au second et pourra même dresser un palier contre l’autre pour atteindre ses objectifs stratégiques.

  2. Technologies to Support Community-Dwelling Persons With Dementia: A Position Paper on Issues Regarding Development, Usability, Effectiveness and Cost-Effectiveness, Deployment, and Ethics.

    Science.gov (United States)

    Meiland, Franka; Innes, Anthea; Mountain, Gail; Robinson, Louise; van der Roest, Henriëtte; García-Casal, J Antonio; Gove, Dianne; Thyrian, Jochen René; Evans, Shirley; Dröes, Rose-Marie; Kelly, Fiona; Kurz, Alexander; Casey, Dympna; Szcześniak, Dorota; Dening, Tom; Craven, Michael P; Span, Marijke; Felzmann, Heike; Tsolaki, Magda; Franco-Martin, Manuel

    2017-01-16

    for researchers to include in their evaluation of assistive technologies. Based on these findings, various actions are recommended for development, usability, effectiveness and cost-effectiveness, deployment, and ethics of assistive and health technologies across Europe. These include avoiding replication of technology development that is unhelpful or ineffective and focusing on how technologies succeed in addressing individual needs of persons with dementia. Furthermore, it is suggested to include these recommendations in national and international calls for funding and assistive technology research programs. Finally, practitioners, policy makers, care insurers, and care providers should work together with technology enterprises and researchers to prepare strategies for the implementation of assistive technologies in different care settings. This may help future generations of persons with dementia to utilize available and affordable technologies and, ultimately, to benefit from them. ©Franka Meiland, Anthea Innes, Gail Mountain, Louise Robinson, Henriëtte van der Roest, J Antonio García-Casal, Dianne Gove, Jochen René Thyrian, Shirley Evans, Rose-Marie Dröes, Fiona Kelly, Alexander Kurz, Dympna Casey, Dorota Szcześniak, Tom Dening, Michael P Craven, Marijke Span, Heike Felzmann, Magda Tsolaki, Manuel Franco-Martin. Originally published in JMIR Rehabilitation and Assistive Technology (http://rehab.jmir.org), 16.01.2017.

  3. Urraque, Elvire et Sancie. Le rôle et la place des infantes dans l’historiographie castillane (XIIIe-XIVe siècles

    Directory of Open Access Journals (Sweden)

    Patricia ROCHWERT-ZUILI

    2008-05-01

    Full Text Available Dans la « Quatrième partie » de l’Histoire d’Espagne (1270, on ne trouve nulle évocation du statut intermédiaire qu’avaient pu avoir, jusqu’au XIIe siècle, ces seigneures d’infantat, vouées à la chasteté et au célibat mais non recluses, ce qui leur permettait de participer pleinement à la vie politique du royaume. À travers l’image d’Urraque, d’Elvire et de Sancie, on perçoit surtout le rôle que jouèrent les femmes auprès d’Alphonse X et de ses successeurs. La Chronique de vingt rois (1282-1284 semble témoigner du soutien que le roi Sage avait pu trouver auprès de ses filles à la fin de son règne. Profondément influencées par la reine et régente Marie de Molina, la Version sancienne (1289 et la Chronique de Castille (1295-1312 laissent entrevoir les orientations du programme politique « molinien ». Ainsi, dans l’historiographie castillane du tournant des XIIIe et XIVe siècles, l’infante Urraque prend les traits d’une parfaite femme régnante façonnée à l’image de Marie de Molina.La « Cuarta parte » de la Estoria de España (1270 no guarda testimonio del estatuto intermediario que tuvieron, hasta el siglo XII, esas infantas castas y solteras pero no recluidas, lo que les permitía dedicarse plenamente a la vida política del reino. A través de Urraca, Elvira y Sancha se percibe más bien el papel que tuvieron las mujeres al lado de Alfonso X y sus sucesores. La Crónica de veinte reyes (1282-1284 parece rendir homenaje a las hijas del rey Sabio que lo acompañaron hasta el final de su reinado. En la Versión sanciana (1289 y la Crónica de Castilla (1295-1312, en las que influye el modelo de la reina y regente María de Molina, se destacan las orientaciones políticas del « molinismo ». De hecho, en la historiografía castellana de finales del XIII principios del XIV, la infanta Urraca tiene las características de una mujer reinante modélica inspirada en María de Molina.

  4. The Hero and His Shadow

    Directory of Open Access Journals (Sweden)

    Simona Micali

    2010-08-01

    inquiétante étrangeté. L’article soutient l’idée que le développement du thème à travers les âges a beaucoup à voir avec les transformations du sujet humain tel que l’ont façonné les révolutions culturelles et épistémologiques depuis deux cents ans.

  5. Influência de um programa de iniciação científica de graduação no perfil profissional dos médicos recém-formados The Influence of an undergraduate scientific initiation programme onn the professional profile of new physicians

    Directory of Open Access Journals (Sweden)

    Raphael Joaquim Teles Cyrillo

    2010-09-01

    Full Text Available Introdução: Este trabalho estuda a influência de um programa de iniciação científica (PIC no perfil profissional de médicos recém-formados numa universidade pública brasileira. Objectivos e métodos: Avaliamos cinquenta e dois novos médicos arrolados em dois grupos pareados por sexo, idade e coeficiente de rendimento académico, diferindo apenas na sua participação no PIC. Dados acerca da situação profissional e socioeconómica foram obtidos, incluindo a escolaridade dos pais; a renda familiar média antes, durante e depois da realização do curso médico; a situação profissional actual; as aprovações em concurso público e os títulos e graus obtidos após a graduação. Resultados: Diferenças significativas foram observadas apenas nas aprovações em concursos públicos (p = 0,0098 e na renda familiar após a graduação (p = 0,02, maiores ambas no grupo não PIC. Apenas um médico obteve o título de mestre após a graduação, embora muitos deles em ambos os grupos tenham obtidos títulos técnicos e publicado ou apresentado artigos médicos em congressos. Conclusões: Aparentemente, a participação num PIC implica menor renda familiar e menor número de aprovações em concursos públicos. Entretanto, isto pode reflectir apenas uma etapa passageira de um longo processo. Uma nova pesquisa, já em curso, virá esclarecer esta última questão, agora que mais tempo já decorreu desde as suas graduações.Introduction: This paper studies the influence of a Scientific Initiation Programme (SIP on the Professional profile of new doctors from a Brazilian university. Aim and methods: Evaluate fifty-two new doctors divided into two groups matched by sex, age and academic performance and differing only in participation in the SIP. Professional and socioeconomic data were collected, including schooling of parents; average income before, during and after the medical course; current Professional situation; results of exams for civil servant recruitment; and titles and degrees obtained after graduation. Results: Significant differences were found only in civil servant recruitment exam results (p = 0.0098 and in income after graduation (p = 0.02, which were both higher in the non-SIP group. Only one doctor got a M.Sc. degree after graduation, but many of them in both groups obtained technical titles, and had papers presented at congresses or published. Conclusions: Apparently, taking part in a SIP led to lower income and worse civil servant recruitment exam results. However, this may only reflect a transient phase in a long-term process. New research currently under way will answer this remaining question, now that more time has elapsed since graduation.

  6. Impact of meteorological conditions on stability of selected slopes in the Wiśnicz Foothills

    Directory of Open Access Journals (Sweden)

    Demczuk Piotr

    2014-12-01

    Full Text Available Wpływ warunków meteorologicznych na kształtowanie się warunków stateczności wybranych zboczy Pogórza Wiśnickiego. Jednym z najważniejszych procesów wpływających na kształtowanie stoków górskich zbudowanych z fl iszu karpackiego są ruchy masowe. Tylko na nielicznych obiektach prowadzono kompleksowe, pogłębione badania mechanizmów inicjacji ruchów osuwiskowych. Badania takowe są czasochłonne, a zadowalające i wiarygodne wyniki osiąga się po co najmniej kilkuletnim okresie pomiarów i analiz. Większość programów badań ogranicza się do krótkich, jednorazowych obserwacji i pomiarów powierzchniowych. Uwaga uczestników tych projektów skupia się na dużych osuwiskach strukturalnych obejmujących swoim zasięgiem głęboko zalegające skały trzeciorzędowe, pomijając płytkie osuwiska zachodzące na granicy zwietrzeliny i skał litych oraz w zasięgu samej zwietrzeliny. Celem pracy było określenie przebiegu zmian warunków stateczności wybranych zboczy związanych ze warunkami meteorologicznych występujących w latach 2008-2013 na obszarze Pogórza Wiśnickiego. Dla potrzeb pracy wykorzystano dane meteorologiczne, tj. temperatura powietrza, wilgotność gleby, prędkość wiatru, sumy opadów i liczba dni z deszczem, pochodzące ze Stacji Naukowej IGiGP UJ w Łazach koło Bochni (Pogórze Wiśnickie. Przeprowadzono terenowe i laboratoryjne badania parametrów geotechnicznych gruntów stanowiących pokrywy stokowe wybranych zboczy osuwiskowych we wsiach Królówka i Łychówo. Wcześniej wspomiane dane meteorologiczne, a także dane dotyczące temperatury, wilgotności względnej powietrza wykorzystano w dalszej części pracy do określenia zmian stanu naprężeń dla dwóch zboczy osuwiskowych. W tym celu zastosowano moduły Slope/W, Vados/W oraz Seep/W stanowiące część pakietu GeoSlope. Wyniki analiz potwierdziły, że stabilność zbocza jest silnie związana z opadami atmosferycznymi, ale wykazały r

  7. Impact of Poultry Manure on Growth Behaviour, Black Sigatoka Disease Response and Yield Attributes of Two Plantain (Musa spp. AAB Genotypes

    Directory of Open Access Journals (Sweden)

    Aba, SC.

    2011-01-01

    Full Text Available La baisse de rendement en culture de plantain est un phénomène fréquent après quelques cycles de production; elle est due à de faibles niveaux de matière organique du sol et à une sensibilité accrue à des stress biotiques. L'utilisation de variétés améliorées est une option bon marché et respectueuse de l'environnement pour lutter contre les maladies des plantes, mais le maintien du rendement d'un nouveau cultivar en bananeraie nécessite une bonne gestion de la fertilité des sols qui pourrait être obtenue par une utilisation judicieuse de fumier de volaille. Les effets des trois doses [(0, 10 et 20 t.ha-1] de fumier de volaille décomposé sur la croissance, la réponse à la cercosporiose noire et le rendement de PITA 24' (un hybride de plantain et de son grand-parent maternel 'Mbi-Egome' (une banane plantain locale ont été évalués à Onne (Nigeria dans une station à fortes précipitations de l'IITA. L'expérience a été menée selon un dispositif split plot en blocs aléatoires complets. Les résultats ont montré que les deux clones étudiés avaient des variables de croissance similaires, sauf pour la surface foliaire et la teneur en chlorophylle. Malgré la sensibilité du génotype hybride à la cercosporiose foliaire d'origine atmosphérique, les données sur les composantes du rendement ont montré que 'PITA 24' produisait significativement plus de mains et de doigts par régime, un meilleur rendement du régime et un meilleur rendement végétatif global, toutefois, les deux génotypes ont présenté un schéma similaire pour la répartition de la biomasse. Les plants fumés ont eu un rendement significativement amélioré par rapport aux plants témoins, mais il y a eu un rendement moindre pour la dose de 20 t.ha-1. L'augmentation des doses d'engrais a réduit de plus de 30 jours le temps de récolte; de même, la taille des plants, le drageonnage, la teneur en chlorophylle des feuilles, l'indice des feuilles non

  8. Mouvements de terrain et urbanisation le long du Criş Repede en amont de la ville d'Oradea (Roumanie

    Directory of Open Access Journals (Sweden)

    Christelle Sosson

    2008-01-01

    Full Text Available Dans la partie est de la ville d'Oradea et sur la rive droite du Criş Repede, un nouveau quartier résidentiel est en construction sur le versant sud des Collines d'Oradea. Les nouvelles maisons sont réparties suivant deux alignements : un sur le sommet de l'interfluve et l'autre, plus dense, au pied du versant. Entre ces deux alignements, on trouve des jardins et des cultures en terrasses. Ce versant verdoyant et peu éloigné du centre urbain, constitue un lieu favorable à une extension urbaine.Néanmoins une multitude de désordres apparaissent sur ces pentes façonnées dans les formations détritiques (sables, marnes et grés déposées à la fin du Tertiaire par la Mer Pannonique. Le levé d'une carte géomorphologique au 1/5000 a permis de mettre en évidence une multitude de mouvements de terrain. Plusieurs types de mouvements ont été observés : des mouvements rotationnels, des coulées boueuses et des extensions latérales appelées localement "glimées". Ces mouvements peuvent être expliqués par des facteurs favorables à leur déclenchement. On a recensé des facteurs qualifiés de "permanents" (topographie, géologie, hydrologie et des facteurs qualifiés "d'occasionnels" comme les précipitations.L'étude chronologique de ces formes a permis d'identifier quatre générations de mouvements de terrain. Des indices, comme des fissures affectant les murs des maisons et des clôtures, ou des arbres déformés, montrent que ces mouvements sont toujours actifs.A new residential district is under construction on the southern slope of Oradea Hills located in the eastern part of the town of Oradea and on right bank of the Cris Repede. The new houses are distributed according to two alignments: one on the top of the interfluve and the other, denser, at the bottom of the slope. Gardens and terrace cultivation can be found between these two developments. Therefore, this green slope in the vicinity of the urban center constitutes a

  9. Thermal properties of bodies in fractal and cantorian physics

    International Nuclear Information System (INIS)

    Zmeskal, Oldrich; Buchnicek, Miroslav; Vala, Martin

    2005-01-01

    Fundamental laws describing the heat diffusion in fractal environment are discussed. It is shown that for the three-dimensional space the heat radiation process occur in structures with fractal dimension D element of heat conduction and convection have the upper hand (generally in the real gases). To describe the heat diffusion a new law has been formulated. Its validity is more general than the Plank's radiation law based on the quantum heat diffusion theory. The energy density w = f (K, D), where K is the fractal measure and D is the fractal dimension exhibit typical dependency peaking with agreement with Planck's radiation law and with the experimental data for the absolutely black body in the energy interval kT m m kT m ∼ 1.5275. The agreement of the fractal model with the experimental outcomes is documented for the spectral characteristics of the Sun. The properties of stellar objects (black holes, relict radiation, etc.) and the elementary particles fields and interactions between them (quarks, leptons, mesons, baryons, bosons and their coupling constants) will be discussed with the help of the described mathematic apparatus in our further contributions. The general gas law for real gases in its more applicable form than the widely used laws (e.g. van der Waals, Berthelot, Kammerlingh-Onnes) has been also formulated. The energy density, which is in this case represented by the gas pressure p = f (K, D), can gain generally complex value and represents the behaviour of real (cohesive) gas in interval D element of (1,3>. The gas behaves as the ideal one only for particular values of the fractal dimensions (the energy density is real-valued). Again, it is shown that above the critical temperature (kT > K h c) and for fractal dimension D m > 2.0269 the results are comparable to the kinetics theory of real (ideal) gas (van der Waals equation of state, compressibility factor, Boyle's temperature). For the critical temperature (K h c = kT r ) the compressibility

  10. De la petite cuillère... au reliquaire ou l’inventaire de l’orfèvrerie

    Directory of Open Access Journals (Sweden)

    Francis Muel

    2005-09-01

    Full Text Available Après quelques travaux fondamentaux et pionniers réalisés entre 1850 et 1950, la recherche dans le domaine de l’orfèvrerie française s’est développée au cours de la seconde moitié du XXe siècle, notamment avec l’étude approfondie des centres régionaux de production et avec des inventaires systématiques dans les collections privées et publiques. Par la normalisation des vocabulaires, des méthodes et des analyses, par ses opérations de recensement et d’étude permettant de constituer des corpus, par les publications et les bases de données nationales, l’Inventaire général, en lien avec le CNRS, a largement structuré la recherche et contribué à la mise en valeur des témoins d’un patrimoine fortement sinistré au cours des siècles. Ci-après, des articles illustreront la richesse insoupçonnée d’un territoire de montagne comme celui du nord des Hautes-Alpes, l’intérêt patrimonial d’œuvres jusqu’ici sous-estimées, tels deux reliquaires montpelliérains, et la découverte d’œuvres de belle qualité comme une aiguière de baptême mâconnaise, une écuelle couverte au poinçon d’une veuve d’orfèvre rennais ou un ostensoir portant la signature prestigieuse d’un grand orfèvre, François-Désiré Froment-Meurice.After some fundamental and pioneering work undertaken between 1850 and 1950, research in the field of France’s gold and silver artefacts developed during the second half of the twentieth century, in particular through in-depth studies of certain regional production centres and some systematic inventories of private and public collections. The services of the Inventaire général, in association with the CNRS, brought their contribution to this research work by establishing normalised vocabularies and analytical methods, through publications and via the national heritage databases. This work has helped contribute to a better appreciation of precious elements of the national heritage

  11. Hannah Arendt : la part de l’art dans la constitution d’un monde commun d’apparence

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    Alain Cambier

    2007-05-01

    Full Text Available Que l’art puisse participer à l’édification d’un monde humain est une idée qu’Hannah Arendt a repensée dans Condition de l’homme moderne. S’il est vrai que l’apparence comme manifestation est la seule voie d’accès à l’Être, l’art nous y initie puisqu’il a vocation à déployer entre l’artiste et son public un espace commun d’apparence. L’éclat des œuvres d’art contribue à garantir l’objectivité de notre monde parce qu’elles sont destinées traditionnellement à se maintenir durablement dans l’espace public. Mais certains ont cru s’autoriser d’Hannah Arendt pour condamner l’art contemporain au motif qu’il se fourvoierait dans l’éphémère. C’est oublier que l’art ne se réduit pas à une poiésis artisanale : loin de se présenter comme l’accomplissement d’une fin, il se manifeste davantage comme commencement. En mettant en évidence la capacité proprement humaine de commencer quelque chose, l’art contemporain relève d’une expérience de liberté, au même titre que la praxis politique ou éthique. Il nous révèle aussi que si l’œuvre d’art est chose du monde, elle ne vaut pourtant que dans la mesure où elle ouvre le public à un champ de possibles insoupçonnés qui renouvelle sa perception du monde.That Art can participate in the formation of a human world is an idea rethought by Hannah Arendt in « The Human Condition ». If it’s true that appearance in itself is the only way of access to being, art initiates us since it is known for opening a common ground of appearance between the artist and the public. The splendour of works of art contributes to the worldly reality since they are traditionally destined to last in a public place. Some have used Hannah Arendt’s authority to condemn contempory art giving as a pretext it loses itself in momentariness. That means forgetting that art cannot be reduced to « handmade »: far from presenting itself as an

  12. [Man and his fellow-creatures under ethical aspects].

    Science.gov (United States)

    Teutsch, Gotthard M

    2005-01-01

    It is for reasons of age I will have to terminate my work at the Literary Review in the form developed since 1995. The report is being reduced to a concentration of ethically relevant reviews as exemplified in the fourth-quarter issue of ALTEX. This is to ascertain that essential developments in this field will not be overlooked. Insofar, the Literary Review will be continued under the heading "New literature concerning topics of animal ethics". The more central topics of animal ethics are being "used up" the more new questions are being formulated. Thus it was that during the last few years the plant-world, long neglected, was rediscovered and received attention through the publication of important works. Another recent discovery concerns itself with "cognitive ethology" which developed out of the critique of behaviourism and which is dealt with in a separate chapter in this issue. But there is also a "classic" of ethics who has been reviewed and interpreted anew repeatedly. In her book "Albert Schweitzer, a prophet of medical ethics", Heike Baranzke describes Schweitzer's ethics as not sentimental or nostalgic but rather as a radically modern stance, committed to the enlightenment. Manuel Schneider, also, conveys a comprehensive view of Albert Schweitzer's ethics in "Life in the middle of life - the relevance of the ethics of Albert Schweitzer", a book edited by Altner, Frambach, Gottwald and himself in 2005. For this, in particular, he derives a possibility of a physiocentric ethics. By contrast, Beate Weinzierl approaches Schweitzer on a complete personal and human level in "Yearning for nature - access to inner and outer nature with Albert Schweitzer". Wolfgang Senz is undertaking a critical appreciation of Albert Schweitzer's concept of "life" and this, foremost, in the light of Schweitzer's rejection of the Cartesian "I am". In the end, Jean Claude Wolf cannot manage without citing Schweitzer either, referring to him in his not accepting the (western) world

  13. Superconductivity and the environment: a Roadmap

    International Nuclear Information System (INIS)

    Nishijima, Shigehiro; Eckroad, Steven; Marian, Adela; Choi, Kyeongdal; Kim, Woo Seok; Terai, Motoaki; Deng, Zigang; Zheng, Jun; Wang, Jiasu; Umemoto, Katsuya; Du, Jia; Keenan, Shane; Foley, Cathy P; Febvre, Pascal; Mukhanov, Oleg; Cooley, Lance D; Hassenzahl, William V; Izumi, Mitsuru

    2013-01-01

    There is universal agreement between the United Nations and governments from the richest to the poorest nations that humanity faces unprecedented global challenges relating to sustainable energy, clean water, low-emission transportation, coping with climate change and natural disasters, and reclaiming use of land. We have invited researchers from a range of eclectic research areas to provide a Roadmap of how superconducting technologies could address these major challenges confronting humanity. Superconductivity has, over the century since its discovery by Kamerlingh Onnes in 1911, promised to provide solutions to many challenges. So far, most superconducting technologies are esoteric systems that are used in laboratories and hospitals. Large science projects have long appreciated the ability of superconductivity to efficiently create high magnetic fields that are otherwise very costly to achieve with ordinary materials. The most successful applications outside of large science are high-field magnets for magnetic resonance imaging, laboratory magnetometers for mineral and materials characterization, filters for mobile communications, and magnetoencephalography for understanding the human brain. The stage is now set for superconductivity to make more general contributions. Humanity uses practically unthinkable amounts of energy to drive our modern way of life. Overall, global power usage has been predicted to almost double from 16.5 to 30 TW in the next four decades (2011 Equinox Summit: Energy 2030 http://wgsi.org/publications-resources). The economy with which electrons carry energy compels the continued quest for efficient superconducting power generation, energy storage, and power transmission. The growing global population requires new arable land and treatment of water, especially in remote areas, and superconductivity offers unique solutions to these problems. Exquisite detectors give warning of changes that are otherwise invisible. Prediction of climate and

  14. Superconductivity and the environment: a Roadmap

    Science.gov (United States)

    Nishijima, Shigehiro; Eckroad, Steven; Marian, Adela; Choi, Kyeongdal; Kim, Woo Seok; Terai, Motoaki; Deng, Zigang; Zheng, Jun; Wang, Jiasu; Umemoto, Katsuya; Du, Jia; Febvre, Pascal; Keenan, Shane; Mukhanov, Oleg; Cooley, Lance D.; Foley, Cathy P.; Hassenzahl, William V.; Izumi, Mitsuru

    2013-11-01

    There is universal agreement between the United Nations and governments from the richest to the poorest nations that humanity faces unprecedented global challenges relating to sustainable energy, clean water, low-emission transportation, coping with climate change and natural disasters, and reclaiming use of land. We have invited researchers from a range of eclectic research areas to provide a Roadmap of how superconducting technologies could address these major challenges confronting humanity. Superconductivity has, over the century since its discovery by Kamerlingh Onnes in 1911, promised to provide solutions to many challenges. So far, most superconducting technologies are esoteric systems that are used in laboratories and hospitals. Large science projects have long appreciated the ability of superconductivity to efficiently create high magnetic fields that are otherwise very costly to achieve with ordinary materials. The most successful applications outside of large science are high-field magnets for magnetic resonance imaging, laboratory magnetometers for mineral and materials characterization, filters for mobile communications, and magnetoencephalography for understanding the human brain. The stage is now set for superconductivity to make more general contributions. Humanity uses practically unthinkable amounts of energy to drive our modern way of life. Overall, global power usage has been predicted to almost double from 16.5 to 30 TW in the next four decades (2011 Equinox Summit: Energy 2030 http://wgsi.org/publications-resources). The economy with which electrons carry energy compels the continued quest for efficient superconducting power generation, energy storage, and power transmission. The growing global population requires new arable land and treatment of water, especially in remote areas, and superconductivity offers unique solutions to these problems. Exquisite detectors give warning of changes that are otherwise invisible. Prediction of climate and

  15. Online professional development conferences: An effective, economical and eco-friendly option

    Directory of Open Access Journals (Sweden)

    Lynn Anderson

    2010-05-01

    Full Text Available In order to stay current within their field, many professionals regularly attend conferences and training events in distant locales. Travel to these conferences costs professionals, and their sponsor organizations, both time and money. In the past the benefits afforded by these conferences, and the lack of comparable alternatives, have provided justification for these expenditures. However, recent studies have shown that the cost of travel extends beyond the pocketbook. Transportation is a major contributor of carbon dioxide (CO2 emissions, a key suspect in the argument for the negative impact of global climate change. This paper examines the potential effects of travel to these conferences on the environment and promotes online conferences as a comparable alternative to face-to-face events. A successful online conference is used to demonstrate the magnitude of the environmental and economical benefits of online conferences. The authors posit that online conferencing technologies have evolved such that they now offer another option for professional development that is effective, economical and environmentally friendly. Résumé : Afin de rester à jour dans leur domaine, de nombreux professionnels participent régulièrement à des colloques et à des activités de formation dans des endroits éloignés. Se déplacer pour assister à de tels congrès ou colloques demande des investissements à la fois en temps et en argent de la part des professionnels et de leurs établissements parrains. Si, par le passé, les bénéfices que procuraient ces colloques et l’absence de solutions de rechange comparables justifiaient de telles dépenses, des études récentes ont toutefois montré que les frais de déplacement s’étendent au-delà des coûts financiers. Les transports constituent une source majeure des émissions de dioxyde de carbone (CO2, un composé soupçonné d’être l’un des facteurs clés de l’impact négatif de l’humain sur le

  16. Deriving Empirically-Based Design Guidelines for Advanced Learning Technologies that Foster Disciplinary Comprehension / Définir des lignes directrices fondées sur des données empiriques pour les technologies d’apprentissage avancé qui favorisent la compr

    Directory of Open Access Journals (Sweden)

    Eric Poitras

    2012-02-01

    est effectuée suivant un protocole concurrent de réflexion à haute voix, et les données ont été codées conformément aux processus de compréhension de la lecture. Nous avons combiné les analyses quantitatives et qualitatives afin d’identifier, décrire et expliquer les tendances de cet expert dans l’utilisation des stratégies de lecture. Nos résultats indiquent que la lecture hautement spécialisée se caractérise par la critique des informations présentées dans le texte, la mise en relation des informations présentées et des connaissances antérieures et l’autoévaluation de la compréhension de ces informations. Les résultats obtenus sont utilisés pour formuler des exemples façonnés et créer un agent pédagogique intégré au Tuteur de lecture hautement spécialisée.

  17. La bande dessinée en Belgique francophone au XIXe siècle

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    Frédéric Paques

    2012-02-01

    Full Text Available La Belgique a une grande tradition de production de bandes dessinées et reconnaît le neuvième art comme l’un des fleurons de sa culture nationale. Pourtant, la plupart des livres traitant d’histoire de la bande dessinée dans ce pays ignorent totalement l’époque pré-hergéenne. Et pour cause, la production de bande dessinée en Belgique est à la fois relativement peu nombreuse et, pour une bonne part, tributaire de l’influence étrangère. De plus, les bandes dessinées présentant du texte sous l’image ont longtemps été complètement ignorées par les historiens du sujet. Cet article se propose de rechercher les diverses apparitions de séquences d’images au XIXe siècle et de les contextualiser. Nombre des exemples que nous avons trouvés constituent des expériences sans lendemain, produites dans des contextes différents de celui qui donnera naissance à la bande dessinée belge de l’âge d’or : trouver une filiation directe n’était pas notre but premier. Pourtant, du Déluge à Bruxelles créé en 1843 par Richard de Querelles aux images populaires du Liégeois Georges Ista, juste avant la première guerre mondiale, la bande dessinée belge au XIXe siècle se révèle au final d’une richesse et d’un intérêt insoupçonnés jusqu’ici.Belgium has a great tradition of production of comic strips and recognizes the 9th art as one of the jewels of its national culture. Nevertheless, most of the books dealing with history of the comic strip in this country ignore totally the time before Hergé. For a good reasons : the production of comic strip in Belgium is relatively rare and, largely, dependent on the foreign influence. Furthermore, comic strips presenting text under the image were completely ignored for a long time by the historians of the subject. What we suggested making in our work, is looking for the diverse appearances of sequences of images through time and contextualise them. Number of the examples

  18. Lignes directrices canadiennes sur la rhinosinusite bactérienne aiguë

    Science.gov (United States)

    Kaplan, Alan

    2014-01-01

    Résumé Objectif Faire un résumé clinique des lignes directrices canadiennes sur la rhinosinusite bactérienne aiguë (RSBA) qui présente des éléments d’intérêt pour les médecins de famille. Source des données Les auteurs des lignes directrices ont effectué une recherche documentaire systématique et ont rédigé des recommandations. Une cote a été donnée à la fois en fonction de la fiabilité des données probantes et de la solidité des recommandations. On a sollicité les commentaires d’experts en la matière venant de l’extérieur, ainsi que l’aval de sociétés médicales canadiennes (Association pour la microbiologie médicale et l’infectiologie Canada, Société canadienne d’allergie et d’immunologie clinique, Société canadienne d’otorhinolaryngologie et de chirurgie cervicofaciale, Association canadienne des médecins d’urgence et Regroupement canadien des médecins de famille en santé respiratoire). Message principal Le diagnostic de la RSBA repose sur la présence de symptômes particuliers et leur durée; l’imagerie ou une culture n’est pas nécessaire dans les cas peu compliqués. Le traitement dépend de la gravité des symptômes, notamment avec des corticostéroïdes intranasaux (CSIN) recommandés comme monothérapie pour les cas de légers à modérés, quoique leurs bienfaits soient modestes. Le recours à des CSIN accompagnés d’antibiotiques est réservé aux patients qui ne répondent pas aux CSIN après 72 heures et comme traitement initial des patients dont les symptômes sont graves. Le choix de l’antibiotique doit tenir compte du pathogène soupçonné, du risque de résistance, des problèmes concomitants et des tendances locales de la résistance aux antimicrobiens. Des thérapies d’appoint comme l’irrigation nasale avec une solution saline sont recommandées. En présence de cas réfractaires au traitement, d’épisodes récurrents et de signes de complications, on devrait demander une

  19. “What’s in a Name?”: H.D.’s Re-Vision of Shakespeare

    Directory of Open Access Journals (Sweden)

    Claire Conilleau

    2010-09-01

    Full Text Available H.D. is both a familiar figure of the Imagist movement fashioned by Ezra Pound and an elusive author of “high modernism.” Primarily known as a poet, H.D. wrote a lot of posthumously published autobiographical prose to disentangle herself from the enshrouding influence of Imagism and the “war trauma.” Shakespeare is a powerful ally for he embodies the intersection between the personal and the literary, the real and the fictional. His plays underwrite H.D.’s autobiographical prose in relation to family, history and identity. H.D. excavates Shakespeare and his plays to reinscribe them in a new body of work – a strategy which enables her to engage with the male literary history and re-vise it by establishing a familial rather than adversarial relation to tradition. This article envisions the complex interactions between Shakespeare’s text and H.D.’s prose as the cornerstone of her positioning as woman writer in the economy of literary creation. It explores the creative diversions and reappropriations of Shakespeare’s plays that H.D. resorts to, especially her play with onomastics, the evocations and inscriptions of the Bard and his plays in the body of her works as well as a lesser known text, By Avon River, whose theme is Shakespeare himself.H.D. est à la fois une figure familière du mouvement Imagiste façonné par Ezra Pound et un auteur insaisissable du modernisme historique. Essentiellement connue comme poète, H.D. a pourtant produit de nombreux textes en prose à caractère autobiographique, qui n’ont pas été publiés de son vivant, pour s’affranchir du carcan imagiste et des traumatismes de la Guerre. Shakespeare est un allié précieux car il incarne la jonction entre le personnel et le littéraire, le réel et le fictionnel. Ses pièces sous-tendent la prose autobiographique de H.D. en rapport à la famille, l’histoire et l’identité. H.D. déterre l’auteur et ses textes pour les réinscrire dans un nouveau

  20. Nuevas concepciones de autoridad y cambios en las relaciones de violencia en la familia y la escuela (New Conceptions of Authority and Changes in Domestic and School Violence(Nouvelles conceptions d'autorité et changements dans les rapports de violence à l'intérieur de la famille et l'école(Novas concepções de autoridade e mudanças nas relações de violência na família e na escola

    Directory of Open Access Journals (Sweden)

    Bárbara Yadira García-Sánchez

    2011-12-01

    Full Text Available ResumenEste artículo presenta algunas reflexiones sobre las transformaciones en las concepciones de la autoridad y su relación con las violencias difusas en la familia y la escuela configuradas en el marco conceptual del proyecto de investigación Violencia escolar en Bogotá: una mirada desde las familias, los maestros y los jóvenes. Aplicación de un modelo cualitativo de investigación y prevención en familia, escuela y barrio, el cual aplicó meto- dologías cualitativas, con base en el modelo Núcleos de Educación Social para la prevención de violencias difusas con grupos de padres y madres, profesores, estudiantes y líderes barriales durante los años 2009 y 2010 en cinco instituciones educativas oficiales, modelo basado en fundamentos de la Investigación Acción Participativa, IAP.Abstractthis paper addresses transformations of authority and its relation to violence at school and at home, as established in the theoretical framework of a study named School Violence in Bogotá: the Families′, Teachers′ and Children′s Perspectives. this study was carried out using qualitative methodologies, and as a result the Cores of Social Education program was developed in 2009 and 2010, which involved parents, teachers and neighborhood representatives around five public schools and was based on the Investigation-Action-Participation model.RésuméCet article présente quelques réflexions sur les transformations de l′autorité et son rapport aux violences diffuses dans la famille et′école façonnées dans le cadre con- ceptuel du projet de recherche Violence scolaire à Bogota: un regard des familles, des maîtres d′école et des jeunes, dans ce cadre on a appliqué les méthodologies qualitatives, en développant le modèle Noyaux d′éducation sociale, pour la prévention de violences diffuses avec de groups de pères et mères, professeurs, étudiants et leaders du quartier pendant les années 2009 et 2010 dans cinq institutions

  1. Cardiotocografia Anteparto e Prognóstico Perinatal em Gestações Complicadas pelo Diabete: Influência do Controle Metabólico Materno Antepartum Nonstress Test and Perinatal Prognosis in Pregnancies Complicated by Diabetes: Influence of Maternal Metabolic Control

    Directory of Open Access Journals (Sweden)

    Moacyr Sanches Mascaro

    2002-10-01

    Full Text Available Objetivo: relacionar a qualidade do controle metabólico com os resultados da cardiotocografia (CTG anteparto e avaliar sua capacidade preditiva no prognóstico perinatal de gestações associadas ao diabete. Pacientes e Métodos: estudo retrospectivo de 125 gestantes, portadoras de diabete gestacional ou clínico, no qual se relacionou a última CTG anteparto (intervalo máximo de 48 horas à qualidade do controle metabólico materno e aos resultados perinatais. A qualidade do controle metabólico foi definida pela média glicêmica do dia do exame (MGd e da gestação (MG e pelo comportamento da requisição de insulina (R/insulina. Para os resultados perinatais foram analisados os índices de Apgar de 1º e 5º minuto, a classificação peso/idade gestacional, o tempo de internação, a necessidade de cuidados de UTI e a ocorrência de óbito neonatal (ONN precoce. A capacidade diagnóstica da CTG anteparto foi avaliada pelos índices de sensibilidade, especificidade e valor preditivo positivo e negativo. Resultados: a MGd adequada ( ou = 120 mg/dL, a 26,1% (pBackground: the antepartum nonstress test (NST is the most commonly used test to evaluate fetal well-being in pregnancies complicated by diabetes, its results being related to the quality of maternal metabolic control and perinatal prognosis. Purpose: to relate the quality of metabolic control to the results of the NST and to evaluate its predictive capacity for the perinatal prognosis of pregnancies associated with diabetes. Patients and Methods: this is a retrospective study of 125 pregnant women with gestational or clinical diabetes in which the last NST (maximum interval of 48 h was related to the quality of maternal metabolic control and perinatal results. Quality of metabolic control was defined by the glycemic mean on the test day (GMd, glycemic mean during pregnancy (GM, and behavior of insulin requirement (Insulin/R. For the perinatal results, the following parameters were

  2. 'How we learned to kill our brother'?: memory, morality and reconciliation in Peru

    Directory of Open Access Journals (Sweden)

    2000-01-01

    Full Text Available “COMMENT AVONS-NOUS APPRIS A TUER NOS FRERES ?” : MEMOIRE, MORALE ET RECONCILIATION AU PEROU. Dans cet article nous nous demandons comment certains paysans d’Ayacucho (Pérou analysent à la fois la violence politique qui a façonné leur vie quotidienne depuis 1980 et l’ordre de tuer qui a pris forme dans le contexte du conflit armé entre Sentier Lumineux, les Forces Armées Péruviennes et les rondes paysannes. Depuis 1995, nous conduisons à cet effet une recherche anthropologique dans diverses communautés du département d’Ayacucho. Nous cherchons ici à voir comment le contexte de guerre structure la vie morale en défiant les règles élémentaires du comportement humain et le sens même de la vie en communauté. Nous avons recours à une approche généalogique pour analyser les origines des interprétations morales qui surgissent dans des contextes locaux spécifiques. Aussi bien dans le processus de militarisation et de démilitarisation de la vie quotidienne, les cadres moraux qui transparaissent à travers les récits des paysans s’avèrent être un mélange synchrétique de christianisme militant, de thèmes psycho-culturels et de l’appropriation de discours extra-locaux. “¿CÓMO APRENDIMOS A MATAR A NUESTROS HERMANOS?”: MEMORIA, MORALIDAD Y RECONCILIACIÓN EN EL PERÚ. En este artículo, exploramos cómo los campesinos en Ayacucho (Perú entienden tanto la violencia política que ha moldeado la vida cotidiana desde 1980, como el mandato de matar que surgió dentro del contexto del conflicto armado entre Sendero Luminoso, las Fuerzas Armadas Peruanas, y las rondas campesinas. Hemos estado llevando a cabo una investigación antropológica desde 1995 en varias comunidades en el departamento de Ayacucho. Pretendemos explorar cómo el contexto de guerra moldea la vida moral, desafiando concepciones de la conducta humana aceptable y el sentido mismo de vivir en una comunidad humana. Utilizamos un acercamiento genealógico para

  3. Inmigraciones en Europa

    Directory of Open Access Journals (Sweden)

    Cebrián, Juan A.

    2012-12-01

    : demografía, género y mercado de trabajo. Posteriormente estudiamos los problemas de integración en las sociedades de acogida y las políticas migratorias que la facilitan. Terminamos nuestra disertación con referencias al caso muy singular de España. [fr] Dans un intervalle de seulement six décennies 1950-2010, nous avons assisté à l’interruption des cinq siècles d’émigration qui ont façonné l’histoire moderne européenne. A la fin de la Seconde Guerre mondiale commence un flux migratoire intense en face des anciennes colonies européennes à leur métropole historique, qui a également intégré d’autres domaines qui n’ont jamais eu cette relation de dépendance. Ce phénomène est sans doute le plus important processus social contemporain qui a eu lieu en Europe. Une telle transformation ne peut avoir lieu que par la confluence d’importants facteurs complémentaires. Dans des sections distinctes de cet article, nous présentons les principales causes d’immigrations récentes en Europe et leurs composantes principales. Deuxièmement, nous examinons les principaux aspects de l’immigration: la démographie, le sexe et le marché du travail. Ensuite, nous étudions les problèmes d’intégration dans les sociétés d’accueil et les politiques d’immigration qui la facilitent. Nous avons terminé notre discussion avec des références aux cas singulier de l’Espagne.

  4. Numerical Simulation of Stress-Relief Effects of Protective Layer Extraction / Symulacja numeryczna skutków odprężenia warstwy zabezpieczającej w trakcie jej wybierania

    Science.gov (United States)

    Tian-Rang, Jia; Zi-Min, Zhang; Chun-An, Tang; Yong-Jun, Zhang

    2013-06-01

    with the stress-relief effects in field. Badania terenowe oraz modelowanie w warunkach laboratoryjnych skutków odprężenia warstwy zabezpieczającej w trakcie wydobycia są niezwykle czasochłonne i skomplikowane. Uwzględniając niejednorodność skał i wykorzystując dane geologiczne i o obecności gazów w kopalni Pindingshan 5, opracowano model numeryczny pękania skał w układzie gaz-ciało stałe w oparciu o analizę układu RFPA-Gaz. Model wykorzystano do symulacji zmian naprężeń, odkształceń stropu i spągu, propagacji pęknięć, przemieszczeń w pokładach zabezpieczonych, zmian w przepuszczalności gazów oraz migracji gazów w trakcie wybierania warstwy zabezpieczającej. Wyniki symulacji odwzorowują zmiany naprężeń, odkształceń stropu i spągu, propagacji pęknięć w trakcie wybierania warstwy ochronnej. Ruchy warstw górotworu scharakteryzowano poprzez analizę trzech stref nadkładu i dwóch stref lezących poniżej: w warstwach nadkładu: strefy zawału, strefy spękań oraz strefy osiadania (przemieszczenia w kierunku pionowym), w warstwach leżących poniżej: strefy odkształcenia i pękania spągu, oraz strefy odkształceń elastyczno- plastycznych w kierunku pionowym. Wykazano, że odprężanie miało miejsce w pokładzie zabezpieczającym, co prowadziło do powstania przemieszczeń pionowych oraz poziomych, zanotowano także znaczny wzrost przepuszczalności gazów, desorpcji gazów oraz ich transportu. Z tych względów zagrożenie wybuchem w pokładzie ochronnym zostało wyeliminowane. Całościowa analiza zmian stanu naprężenia, charakterystyki odkształceń i rozkładu pęknięć w pokładzie węgla przeprowadzona została dla czterech stref przecieku gazów, wydzielonych w oparciu zmiany natężenia wypływu gazów, ciśnienia gazów oraz przepuszczalności w odniesieniu do natężenia przepływu gazu w spągu w warstwie ochronnej. Te cztery strefy odpowiadały czterem strefom w których zanotowano odmienne stany napr

  5. Digital Storytelling – Special issue

    Directory of Open Access Journals (Sweden)

    Yngve Nordkvelle

    2010-11-01

    Full Text Available Since the inception of Seminar.net the phenomenon of Digital Storytelling has often been suggested as a promising genre for teaching and learning in a variety of areas. Academically, the genre has attracted interest from scholars in media studies, political science, social work, health and education. In this issue we have sought attention from a huge number of academically inclined persons who either use the genre to teach with media, for teaching and learning about media, or studying how this specific way of working with media offers new possibilities for the articulation of the voice of the common people.When we invited authors for this special issue we did so expecting – and hoping for – contributions from a wide field of interests. We have landed 11 different manuscripts and have organised them according to a tentative order of themes they address: “Teaching and learning with Digital Storytelling”, “Community building”, “Genres of communication” and “Practical papers”.  Being a journal for lifelong learning, the educational use has gained the most interest. But also emerging new areas of use related to health, leisure, recreation, activism, community building, planning, professional communication, and reflection are reflected in the papers. We think the contributions together support our efforts for building the knowledge about digital storytelling as a genre and its potential in the media society. Scholarly publications in this field are generally mediated on paper. And there has been no shortage of superb exemplars of scholarly work these last couple of years: Story Circle: Digital Storytelling around the World, edited by John Hartley and Kelly McWilliams and Digital Storytelling, Mediatized Stories: Self-representations in New Media, edited by Knut Lundby, as well as a conference report, “Storytelling – Reflections in the Age of Digitalization” edited by Yvonne Gächter, Heike Ortner, Claudia Scwartz, Andreas

  6. EDITORIAL: Student undergraduate laboratory and project work

    Science.gov (United States)

    Schumacher, Dieter

    2007-05-01

    to prove a physical law. Many more details and an overview of possible applications can be found in the contribution 'Multimedia representation of experiments in physics' by Juergen Kirstein and Volkhard Nordmeier. A remotely controlled lab (RCL) or 'remote lab' (RL) is a physical experiment which can be remotely controlled via web-interface (server) and client-PC. During recent years a lot of RLs have appeared and also disappeared on the web. At first sight it seems fascinating to use a rare and sophisticated experiment from any PC which is connected to the web. However, in order to provide such a high level experiment continuously and to manage the schedule for sequential access, an enormous amount of manpower is necessary. Sebastian Gröber et al describe their efforts to provide a number of useful RCLs in the contribution 'Experimenting from a distance—remotely controlled laboratory (RCL)'. At many universities, physics labwork courses are also provided for students of other disciplines. Usually these groups are significantly larger than the group of physics students. Labwork courses for these groups must account for the specific objectives and students' learning conditions (previous knowledge, motivation). Heike Theyßen describes a targeted labwork course especially designed for medical students: 'Towards targeted labwork in physics as a subsidiary subject: enhancing the learning efficiency by new didactical concepts and media'. The term 'targeted' refers to the specific choice of content and methods regarding the students' learning conditions as well as the objectives of the labwork course. These differ significantly from those of labwork courses for physics students. In this case two targeted learning environments were developed, implemented and evaluated by means of several comparative studies. Both learning environments differ from traditional physics labwork courses in their objectives, didactical concept, content and experimental setups. One of them is

  7. Editorial: Partizipationschancen im Kulturraum Internet nutzen und gestalten: Das Beispiel Web 2.0

    Directory of Open Access Journals (Sweden)

    Kerstin Mayrberger

    2011-10-01

    Web 2.0» auf dem Kongress «Bildung in der Demokratie» der Deutschen Gesellschaft der Erziehungswissenschaft (DGfE im März 2010 in Mainz gehalten wurden. Hans Geser diskutiert in seinem Beitrag «Kakophonie und Selbstorganisation in der digitialen Agora» kritisch die Ausweitung niederschwelliger, öffentlicher Partizipationschancen. Dabei unterstreicht er die Bedeutsamkeit informeller politischer Bildungsprozesse, die ein digitales, politisches Engagement mit sich bringt bzw. bringen kann und deren Potenzial als Übungsfeld. Er führt erste Rahmenbedingungen und Basismerkmale einer «neuen politischen Öffentlichkeit» aus und geht auf die Folgen der Loskoppelung politischer Kommunikation vom politischen Handeln ein. Heinz Moser befasst sich in seinem Beitrag «Das politische Internet – Möglichkeiten und Grenzen» mit der Frage, inwieweit sich die Qualität und Kultur der Bürgerpartizipation durch die junge Generation und ihre Mediennutzungsvorlieben verändert. Nach Ausführungen zu Formen von eGouvernment, eParticipation und eVoting mit Bezug zu bestehenden sozialwissenschaftlichen Ansätzen im Kontext von eDemokratie folgt die Zusammenfassung einer empirischen Untersuchung von politischer Partizipation am Beispiel von politischen Gruppen aus der Schweiz, die sich auf Facebook gebildet haben. Heike Schaumburg stellt in ihrem Beitrag «Politische Bildung und das Web 2.0» eine empirische Studie vor, die der Frage nachgeht, inwieweit das Web 2.0 in der Lage ist, die in die Social Software gesetzten Hoffnungen nach mehr Partizipation, Kommunikation und Vernetzung für die politische Bildung zu erfüllen. Der Beitrag erörtert, welche Potenziale das Web 2.0 für die Politische Bildung mit Blick auf ihre didaktische Gestaltung bietet, bevor er auf Basis einer Analyse bildungspolitischer Internet-Angebote Aussagen über die gegenwärtige Verbreitung von Web 2.0 Angeboten in der Politischen Bildung trifft. Schliesslich wird auf der Grundlage einer Nutzerbefragung

  8. New Observations of Comet Hale-Bopp from La Silla

    Science.gov (United States)

    1998-10-01

    to the large size of the nucleus, probably 40 - 60 km in diameter, it will be possible to observe this comet with large optical telescopes for many years to come. Information about Hale-Bopp on the web Additional information about Comet Hale-Bopp is available on the web at many sites. Some of the most comprehensive websites may be accessed via the ESO Hale-Bopp site. Notes: [1] Other scientists involved in the long-term radio monitoring of Comet Hale-Bopp are Nicolas Biver (Institute for Astronomy, University of Hawaii, USA), Pierre Colom, Jacques Crovisier, Eric Gérard, Benoit Germain, Emmanuel Lellouch (Observatoire de Paris, France), Didier Despois (Observatoire de Bordeaux, France), Gabriel Paubert (IRAM, Granada, Spain), Raphael Moreno, Joern E. Wink (IRAM, Grenoble, France), John K. Davies (JAC, Hawaii, USA), William R.F. Dent (Royal Observatory, Edinburgh, UK), Hans Rickman, Marcus Gunnarsson (Uppsala Astronomiska Observatorium, Sweden), Per Bergman, Lars E.B. Johansson (OSO, Sweden), Fredrik Rantakyroe (SEST, La Silla), Darek C. Lis, David Mehringer, Dominic Benford, Martin Gardner, Tom G. Phillips (CSO, USA), Heike Rauer (DLR, Berlin, Germany). [2] The figure appears in N. Biver et al. : "Long-term Monitoring of the Outgassing of C/1995 O1 (Hale-Bopp) at Radio Wavelengths", a poster paper presented at the DPS meeting on October 11-16, 1998 (Madison, Wisconsin, USA) and to be published in Vol. 30 of the Bulletin of the American Astronomical Society . How to obtain ESO Press Information ESO Press Information is made available on the World-Wide Web (URL: http://www.eso.org ). ESO Press Photos may be reproduced, if credit is given to the European Southern Observatory.

  9. The big comet crash of 1994. Intensive observational campaign at ESO

    Science.gov (United States)

    1994-01-01

    course depend on the exact moments of the impacts. Also at the time of the impacts, a group of French astronomers, headed by Bruno Sicardy of the Observatoire de Paris, will mount a special CCD camera at the Danish telescope, which will be used for different types of observations. They also hope to be able to detect some of the expected light flashes from the Jupiter moons. In addition, this programme will monitor changes in the cloud structure around the impact sites. It may also be possible to obtain low-resolution spectra which will show the temperature of the flashes, but in view of their very short duration, a few seconds at most, this will not be easy. The same instrument will also be used by Nick Thomas of the Max-Planck-Institut fur Aeronomie (Lindau, Germany) to image the Jupiter plasma torus in order to detect possible changes after the impacts. Spectral observations of the comet will be made with the ESO 1.5 m telescope in April by Heike Rauer, also from the Max-Planck-Institut fur Aeronomie. They are expected to lead to a better knowledge about the physical and chemical state of the impacting bodies. For instance, are they really so ``dusty'', as present observations seem to indicate, or do they contain large amounts of gas ? If so, what kind of molecules are present ? This will help to refine the predictions of the impact effects. Imaging and spectral observations of the comet for the same general purposes will also be obtained in early July with the EMMI instrument at the 3.5 m New Technology Telescope by an international team headed by Rita Schulz, formerly at the University of Maryland and now at the Max-Planck-Institut fur Aeronomie. No less than 46 observing hours have been allocated at the Swedish-ESO Submillimetre Telescope (SEST) to an international group headed by Daniel Gautier, Observatoire de Paris-Meudon. During the impacts, the cometary molecules will be mixed with those in the Jovian atmosphere, some of which may come from very deep layers

  10. Thermoelectric Devices: Solid-State Refrigerators and Electrical Generators in the Classroom

    Science.gov (United States)

    Winder, Edmund J.; Ellis, Arthur B.; Lisensky, George C.

    1996-10-01

    of merit Z. Figure 6. (a) Generalized dependence of electrical and thermal conductivity and thermopower on the carrier concentration. (b) The resultant dependence of the figure-of-merit, Z, on the carrier concentration. Adapted from Heikes, R. R., and Ure, R. W., Jr. Thermoelectricity: Science and Engineering; Interscicence: New York, 1961; p 20. The greatest Z value is obtained with a carrier concentration between 1018 and 1021 cm-3. This implies that the best thermoelectric materials will be semiconductors with a relatively high carrier concentration. The choice of carrier type is also important. As mentioned above, the direction of both the Seebeck and Peltier effects is reversed depending on whether the carriers are electrons or holes. If both carrier types are present in a material, their effects will work against each other. Semiconductors always contain both carrier types, but often the semiconductor is intentionally laced with impurities ("doped") so that one carrier type is greatly predominant (2). In this case, the semiconductor is said to be extrinsic. Intrinsic semiconductors, on the other hand, have roughly equal numbers of each type of carrier, causing their performance as thermoelectric materials to suffer. Extrinsic semiconductors, then, are the better choice for thermoelectric devices. Researchers are continually trying to increase the efficiency of thermoelectric materials, through the processing of existing materials or the creation of new ones. Strategies to further improve the figure of merit of semiconductors generally involve decreasing the lattice thermal conductivity through a number of techniques that affect the microstructure of the material (4). These include solid-solution alloying of different semiconductors and dispersing inert particles in the semiconductor. Both treatments disrupt the regular ordering of the crystalline grains and decrease the ability of the material to carry heat through lattice vibrations. Put another way, the mean

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